mirror of
git://git.code.sf.net/p/zsh/code
synced 2024-11-19 21:44:11 +01:00
5012 lines
128 KiB
C
5012 lines
128 KiB
C
/*
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* builtin.c - builtin commands
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*
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* This file is part of zsh, the Z shell.
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*
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* Copyright (c) 1992-1997 Paul Falstad
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* All rights reserved.
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*
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* Permission is hereby granted, without written agreement and without
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* license or royalty fees, to use, copy, modify, and distribute this
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* software and to distribute modified versions of this software for any
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* purpose, provided that the above copyright notice and the following
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* two paragraphs appear in all copies of this software.
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*
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* In no event shall Paul Falstad or the Zsh Development Group be liable
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* to any party for direct, indirect, special, incidental, or consequential
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* damages arising out of the use of this software and its documentation,
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* even if Paul Falstad and the Zsh Development Group have been advised of
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* the possibility of such damage.
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*
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* Paul Falstad and the Zsh Development Group specifically disclaim any
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* warranties, including, but not limited to, the implied warranties of
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* merchantability and fitness for a particular purpose. The software
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* provided hereunder is on an "as is" basis, and Paul Falstad and the
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* Zsh Development Group have no obligation to provide maintenance,
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* support, updates, enhancements, or modifications.
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*
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*/
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/* this is defined so we get the prototype for open_memstream */
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#define _GNU_SOURCE 1
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#include "zsh.mdh"
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#include "builtin.pro"
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/* Builtins in the main executable */
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static struct builtin builtins[] =
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{
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BIN_PREFIX("-", BINF_DASH),
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BIN_PREFIX("builtin", BINF_BUILTIN),
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BIN_PREFIX("command", BINF_COMMAND),
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BIN_PREFIX("exec", BINF_EXEC),
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BIN_PREFIX("noglob", BINF_NOGLOB),
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BUILTIN("[", 0, bin_test, 0, -1, BIN_BRACKET, NULL, NULL),
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BUILTIN(".", BINF_PSPECIAL, bin_dot, 1, -1, 0, NULL, NULL),
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BUILTIN(":", BINF_PSPECIAL, bin_true, 0, -1, 0, NULL, NULL),
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BUILTIN("alias", BINF_MAGICEQUALS | BINF_PLUSOPTS, bin_alias, 0, -1, 0, "Lgmrs", NULL),
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BUILTIN("autoload", BINF_PLUSOPTS, bin_functions, 0, -1, 0, "tUXwkz", "u"),
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BUILTIN("bg", 0, bin_fg, 0, -1, BIN_BG, NULL, NULL),
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BUILTIN("break", BINF_PSPECIAL, bin_break, 0, 1, BIN_BREAK, NULL, NULL),
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BUILTIN("bye", 0, bin_break, 0, 1, BIN_EXIT, NULL, NULL),
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BUILTIN("cd", BINF_SKIPINVALID | BINF_SKIPDASH | BINF_DASHDASHVALID, bin_cd, 0, 2, BIN_CD, "sPL", NULL),
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BUILTIN("chdir", BINF_SKIPINVALID | BINF_SKIPDASH | BINF_DASHDASHVALID, bin_cd, 0, 2, BIN_CD, "sPL", NULL),
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BUILTIN("continue", BINF_PSPECIAL, bin_break, 0, 1, BIN_CONTINUE, NULL, NULL),
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BUILTIN("declare", BINF_PLUSOPTS | BINF_MAGICEQUALS | BINF_PSPECIAL, bin_typeset, 0, -1, 0, "AE:%F:%HL:%R:%TUZ:%afghi:%lprtux", NULL),
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BUILTIN("dirs", 0, bin_dirs, 0, -1, 0, "clpv", NULL),
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BUILTIN("disable", 0, bin_enable, 0, -1, BIN_DISABLE, "afmrs", NULL),
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BUILTIN("disown", 0, bin_fg, 0, -1, BIN_DISOWN, NULL, NULL),
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BUILTIN("echo", BINF_PRINTOPTS | BINF_SKIPINVALID, bin_print, 0, -1, BIN_ECHO, "neE", "-"),
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BUILTIN("emulate", 0, bin_emulate, 1, 1, 0, "LR", NULL),
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BUILTIN("enable", 0, bin_enable, 0, -1, BIN_ENABLE, "afmrs", NULL),
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BUILTIN("eval", BINF_PSPECIAL, bin_eval, 0, -1, BIN_EVAL, NULL, NULL),
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BUILTIN("exit", BINF_PSPECIAL, bin_break, 0, 1, BIN_EXIT, NULL, NULL),
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BUILTIN("export", BINF_PLUSOPTS | BINF_MAGICEQUALS | BINF_PSPECIAL, bin_typeset, 0, -1, BIN_EXPORT, "E:%F:%HL:%R:%TUZ:%afhi:%lprtu", "xg"),
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BUILTIN("false", 0, bin_false, 0, -1, 0, NULL, NULL),
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/*
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* We used to behave as if the argument to -e was optional.
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* But that's actually not useful, so it's more consistent to
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* cause an error.
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*/
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BUILTIN("fc", 0, bin_fc, 0, -1, BIN_FC, "nlre:IRWAdDfEim",
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NULL),
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BUILTIN("fg", 0, bin_fg, 0, -1, BIN_FG, NULL, NULL),
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BUILTIN("float", BINF_PLUSOPTS | BINF_MAGICEQUALS | BINF_PSPECIAL, bin_typeset, 0, -1, 0, "E:%F:%Hghlprtux", "E"),
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BUILTIN("functions", BINF_PLUSOPTS, bin_functions, 0, -1, 0, "mtuU", NULL),
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BUILTIN("getln", 0, bin_read, 0, -1, 0, "ecnAlE", "zr"),
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BUILTIN("getopts", 0, bin_getopts, 2, -1, 0, NULL, NULL),
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BUILTIN("hash", BINF_MAGICEQUALS, bin_hash, 0, -1, 0, "Ldfmrv", NULL),
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#ifdef ZSH_HASH_DEBUG
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BUILTIN("hashinfo", 0, bin_hashinfo, 0, 0, 0, NULL, NULL),
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#endif
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BUILTIN("history", 0, bin_fc, 0, -1, BIN_FC, "nrdDfEim", "l"),
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BUILTIN("integer", BINF_PLUSOPTS | BINF_MAGICEQUALS | BINF_PSPECIAL, bin_typeset, 0, -1, 0, "Hghi:%lprtux", "i"),
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BUILTIN("jobs", 0, bin_fg, 0, -1, BIN_JOBS, "dlpZrs", NULL),
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BUILTIN("kill", 0, bin_kill, 0, -1, 0, NULL, NULL),
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BUILTIN("let", 0, bin_let, 1, -1, 0, NULL, NULL),
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BUILTIN("local", BINF_PLUSOPTS | BINF_MAGICEQUALS | BINF_PSPECIAL, bin_typeset, 0, -1, 0, "AE:%F:%HL:%R:%TUZ:%ahi:%lprtux", NULL),
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BUILTIN("log", 0, bin_log, 0, 0, 0, NULL, NULL),
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BUILTIN("logout", 0, bin_break, 0, 1, BIN_LOGOUT, NULL, NULL),
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#if defined(ZSH_MEM) & defined(ZSH_MEM_DEBUG)
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BUILTIN("mem", 0, bin_mem, 0, 0, 0, "v", NULL),
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#endif
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#if defined(ZSH_PAT_DEBUG)
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BUILTIN("patdebug", 0, bin_patdebug, 1, -1, 0, "p", NULL),
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#endif
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BUILTIN("popd", 0, bin_cd, 0, 1, BIN_POPD, NULL, NULL),
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BUILTIN("print", BINF_PRINTOPTS, bin_print, 0, -1, BIN_PRINT, "abcC:Df:ilmnNoOpPrRsu:z-", NULL),
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BUILTIN("printf", 0, bin_print, 1, -1, BIN_PRINTF, NULL, NULL),
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BUILTIN("pushd", BINF_SKIPINVALID | BINF_SKIPDASH | BINF_DASHDASHVALID, bin_cd, 0, 2, BIN_PUSHD, "sPL", NULL),
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BUILTIN("pushln", BINF_PRINTOPTS, bin_print, 0, -1, BIN_PRINT, NULL, "-nz"),
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BUILTIN("pwd", 0, bin_pwd, 0, 0, 0, "rLP", NULL),
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BUILTIN("r", 0, bin_fc, 0, -1, BIN_R, "nrl", NULL),
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BUILTIN("read", 0, bin_read, 0, -1, 0, "cd:ek:%lnpqrst:%zu:AE", NULL),
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BUILTIN("readonly", BINF_PLUSOPTS | BINF_MAGICEQUALS | BINF_PSPECIAL, bin_typeset, 0, -1, 0, "AE:%F:%HL:%R:%TUZ:%afghi:%lptux", "r"),
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BUILTIN("rehash", 0, bin_hash, 0, 0, 0, "df", "r"),
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BUILTIN("return", BINF_PSPECIAL, bin_break, 0, 1, BIN_RETURN, NULL, NULL),
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BUILTIN("set", BINF_PSPECIAL, bin_set, 0, -1, 0, NULL, NULL),
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BUILTIN("setopt", 0, bin_setopt, 0, -1, BIN_SETOPT, NULL, NULL),
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BUILTIN("shift", BINF_PSPECIAL, bin_shift, 0, -1, 0, NULL, NULL),
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BUILTIN("source", BINF_PSPECIAL, bin_dot, 1, -1, 0, NULL, NULL),
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BUILTIN("suspend", 0, bin_suspend, 0, 0, 0, "f", NULL),
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BUILTIN("test", 0, bin_test, 0, -1, BIN_TEST, NULL, NULL),
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BUILTIN("ttyctl", 0, bin_ttyctl, 0, 0, 0, "fu", NULL),
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BUILTIN("times", BINF_PSPECIAL, bin_times, 0, 0, 0, NULL, NULL),
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BUILTIN("trap", BINF_PSPECIAL, bin_trap, 0, -1, 0, NULL, NULL),
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BUILTIN("true", 0, bin_true, 0, -1, 0, NULL, NULL),
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BUILTIN("type", 0, bin_whence, 0, -1, 0, "ampfsw", "v"),
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BUILTIN("typeset", BINF_PLUSOPTS | BINF_MAGICEQUALS | BINF_PSPECIAL, bin_typeset, 0, -1, 0, "AE:%F:%HL:%R:%TUZ:%afghi:%lprtuxm", NULL),
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BUILTIN("umask", 0, bin_umask, 0, 1, 0, "S", NULL),
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BUILTIN("unalias", 0, bin_unhash, 1, -1, 0, "ms", "a"),
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BUILTIN("unfunction", 0, bin_unhash, 1, -1, 0, "m", "f"),
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BUILTIN("unhash", 0, bin_unhash, 1, -1, 0, "adfms", NULL),
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BUILTIN("unset", BINF_PSPECIAL, bin_unset, 1, -1, 0, "fmv", NULL),
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BUILTIN("unsetopt", 0, bin_setopt, 0, -1, BIN_UNSETOPT, NULL, NULL),
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BUILTIN("wait", 0, bin_fg, 0, -1, BIN_WAIT, NULL, NULL),
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BUILTIN("whence", 0, bin_whence, 0, -1, 0, "acmpvfsw", NULL),
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BUILTIN("where", 0, bin_whence, 0, -1, 0, "pmsw", "ca"),
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BUILTIN("which", 0, bin_whence, 0, -1, 0, "ampsw", "c"),
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BUILTIN("zmodload", 0, bin_zmodload, 0, -1, 0, "ARILabcfdipue", NULL),
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BUILTIN("zcompile", 0, bin_zcompile, 0, -1, 0, "tUMRcmzka", NULL),
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};
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/****************************************/
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/* Builtin Command Hash Table Functions */
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/****************************************/
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/* hash table containing builtin commands */
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/**/
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mod_export HashTable builtintab;
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/**/
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void
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createbuiltintable(void)
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{
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builtintab = newhashtable(85, "builtintab", NULL);
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builtintab->hash = hasher;
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builtintab->emptytable = NULL;
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builtintab->filltable = NULL;
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builtintab->cmpnodes = strcmp;
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builtintab->addnode = addhashnode;
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builtintab->getnode = gethashnode;
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builtintab->getnode2 = gethashnode2;
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builtintab->removenode = removehashnode;
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builtintab->disablenode = disablehashnode;
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builtintab->enablenode = enablehashnode;
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builtintab->freenode = freebuiltinnode;
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builtintab->printnode = printbuiltinnode;
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addbuiltins("zsh", builtins, sizeof(builtins)/sizeof(*builtins));
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}
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/* Print a builtin */
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/**/
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static void
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printbuiltinnode(HashNode hn, int printflags)
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{
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Builtin bn = (Builtin) hn;
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if (printflags & PRINT_WHENCE_WORD) {
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printf("%s: builtin\n", bn->nam);
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return;
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}
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if (printflags & PRINT_WHENCE_CSH) {
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printf("%s: shell built-in command\n", bn->nam);
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return;
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}
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if (printflags & PRINT_WHENCE_VERBOSE) {
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printf("%s is a shell builtin\n", bn->nam);
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return;
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}
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/* default is name only */
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printf("%s\n", bn->nam);
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}
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/**/
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static void
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freebuiltinnode(HashNode hn)
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{
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Builtin bn = (Builtin) hn;
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if(!(bn->flags & BINF_ADDED)) {
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zsfree(bn->nam);
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zsfree(bn->optstr);
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zfree(bn, sizeof(struct builtin));
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}
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}
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/* Make sure we have space for a new option and increment. */
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#define OPT_ALLOC_CHUNK 16
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/**/
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static int
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new_optarg(Options ops)
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{
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/* Argument index must be a non-zero 6-bit number. */
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if (ops->argscount == 63)
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return 1;
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if (ops->argsalloc == ops->argscount) {
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char **newptr =
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(char **)zhalloc((ops->argsalloc + OPT_ALLOC_CHUNK) *
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sizeof(char *));
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if (ops->argsalloc)
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memcpy(newptr, ops->args, ops->argsalloc * sizeof(char *));
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ops->args = newptr;
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ops->argsalloc += OPT_ALLOC_CHUNK;
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}
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ops->argscount++;
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return 0;
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}
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/* execute a builtin handler function after parsing the arguments */
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/**/
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int
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execbuiltin(LinkList args, Builtin bn)
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{
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char *pp, *name, *optstr;
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int flags, sense, argc, execop, xtr = isset(XTRACE);
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struct options ops;
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/* initialise options structure */
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memset(ops.ind, 0, MAX_OPS*sizeof(unsigned char));
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ops.args = NULL;
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ops.argscount = ops.argsalloc = 0;
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/* initialize some local variables */
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name = (char *) ugetnode(args);
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if (!bn->handlerfunc) {
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zwarnnam(name, "autoload failed", NULL, 0);
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deletebuiltin(bn->nam);
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return 1;
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}
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/* get some information about the command */
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flags = bn->flags;
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optstr = bn->optstr;
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/* Set up the argument list. */
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/* count the arguments */
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argc = countlinknodes(args);
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{
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/*
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* Keep all arguments, including options, in an array.
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* We don't actually need the option part of the argument
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* after option processing, but it makes XTRACE output
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* much simpler.
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*/
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VARARR(char *, argarr, argc + 1);
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char **argv;
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/*
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* Get the actual arguments, into argv. Remember argarr
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* may be an array declaration, depending on the compiler.
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*/
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argv = argarr;
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while ((*argv++ = (char *)ugetnode(args)));
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argv = argarr;
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/* Sort out the options. */
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if (optstr) {
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char *arg = *argv;
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/* while arguments look like options ... */
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while (arg &&
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/* Must begin with - or maybe + */
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((sense = (*arg == '-')) ||
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((flags & BINF_PLUSOPTS) && *arg == '+'))) {
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/* Digits aren't arguments unless the command says they are. */
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if (!(flags & BINF_KEEPNUM) && idigit(arg[1]))
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break;
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/* For cd and friends, a single dash is not an option. */
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if ((flags & BINF_SKIPDASH) && !arg[1])
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break;
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if ((flags & BINF_DASHDASHVALID) && !strcmp(arg, "--")) {
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/*
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* Need to skip this before checking whether this is
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* really an option.
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*/
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argv++;
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break;
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}
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/*
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* Unrecognised options to echo etc. are not really
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* options.
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*
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* Note this flag is not smart enough to handle option
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* arguments. In fact, ideally it shouldn't be added
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* to any new builtins, to preserve standard option
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* handling as much as possible.
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*/
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if (flags & BINF_SKIPINVALID) {
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char *p = arg;
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if (optstr)
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while (*++p && strchr(optstr, (int) *p));
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else
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p++;
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if (*p)
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break;
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}
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/* handle -- or - (ops.ind['-']), and +
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* (ops.ind['-'] and ops.ind['+']) */
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if (arg[1] == '-')
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arg++;
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if (!arg[1]) {
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ops.ind['-'] = 1;
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if (!sense)
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ops.ind['+'] = 1;
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}
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/* save options in ops, as long as they are in bn->optstr */
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while (*++arg) {
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char *optptr;
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if ((optptr = strchr(optstr, execop = (int)*arg))) {
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ops.ind[(int)*arg] = (sense) ? 1 : 2;
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if (optptr[1] == ':') {
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char *argptr = NULL;
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if (optptr[2] == ':') {
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if (arg[1])
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argptr = arg+1;
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/* Optional argument in same word*/
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} else if (optptr[2] == '%') {
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/* Optional numeric argument in same
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* or next word. */
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if (arg[1] && idigit(arg[1]))
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argptr = arg+1;
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else if (argv[1] && idigit(*argv[1]))
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argptr = arg = *++argv;
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} else {
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/* Mandatory argument */
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if (arg[1])
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argptr = arg+1;
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else if ((arg = *++argv))
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argptr = arg;
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else {
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zwarnnam(name, "argument expected: -%c",
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NULL, execop);
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return 1;
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}
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}
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if (argptr) {
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if (new_optarg(&ops)) {
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zwarnnam(name,
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"too many option arguments",
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NULL, 0);
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return 1;
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}
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ops.ind[execop] |= ops.argscount << 2;
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ops.args[ops.argscount-1] = argptr;
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while (arg[1])
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arg++;
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}
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}
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} else
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break;
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}
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/* The above loop may have exited on an invalid option. (We *
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* assume that any option requiring metafication is invalid.) */
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if (*arg) {
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if(*arg == Meta)
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*++arg ^= 32;
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zwarn("bad option: -%c", NULL, *arg);
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return 1;
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}
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arg = *++argv;
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/* for the "print" builtin, the options after -R are treated as
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options to "echo" */
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if ((flags & BINF_PRINTOPTS) && ops.ind['R'] &&
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!ops.ind['f']) {
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optstr = "ne";
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flags |= BINF_SKIPINVALID;
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}
|
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/* the option -- indicates the end of the options */
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if (ops.ind['-'])
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break;
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}
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}
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|
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/* handle built-in options, for overloaded handler functions */
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if ((pp = bn->defopts)) {
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while (*pp) {
|
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/* only if not already set */
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if (!ops.ind[(int)*pp])
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ops.ind[(int)*pp] = 1;
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pp++;
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}
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}
|
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|
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/* Fix the argument count by subtracting option arguments */
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argc -= argv - argarr;
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if (errflag) {
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errflag = 0;
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return 1;
|
|
}
|
|
|
|
/* check that the argument count lies within the specified bounds */
|
|
if (argc < bn->minargs || (argc > bn->maxargs && bn->maxargs != -1)) {
|
|
zwarnnam(name, (argc < bn->minargs)
|
|
? "not enough arguments" : "too many arguments", NULL, 0);
|
|
return 1;
|
|
}
|
|
|
|
/* display execution trace information, if required */
|
|
if (xtr) {
|
|
/* Use full argument list including options for trace output */
|
|
char **fullargv = argarr;
|
|
printprompt4();
|
|
fprintf(xtrerr, "%s", name);
|
|
while (*fullargv) {
|
|
fputc(' ', xtrerr);
|
|
quotedzputs(*fullargv++, xtrerr);
|
|
}
|
|
fputc('\n', xtrerr);
|
|
fflush(xtrerr);
|
|
}
|
|
/* call the handler function, and return its return value */
|
|
return (*(bn->handlerfunc)) (name, argv, &ops, bn->funcid);
|
|
}
|
|
}
|
|
|
|
/* Enable/disable an element in one of the internal hash tables. *
|
|
* With no arguments, it lists all the currently enabled/disabled *
|
|
* elements in that particular hash table. */
|
|
|
|
/**/
|
|
int
|
|
bin_enable(char *name, char **argv, Options ops, int func)
|
|
{
|
|
HashTable ht;
|
|
HashNode hn;
|
|
ScanFunc scanfunc;
|
|
Patprog pprog;
|
|
int flags1 = 0, flags2 = 0;
|
|
int match = 0, returnval = 0;
|
|
|
|
/* Find out which hash table we are working with. */
|
|
if (OPT_ISSET(ops,'f'))
|
|
ht = shfunctab;
|
|
else if (OPT_ISSET(ops,'r'))
|
|
ht = reswdtab;
|
|
else if (OPT_ISSET(ops,'s'))
|
|
ht = sufaliastab;
|
|
else if (OPT_ISSET(ops,'a'))
|
|
ht = aliastab;
|
|
else
|
|
ht = builtintab;
|
|
|
|
/* Do we want to enable or disable? */
|
|
if (func == BIN_ENABLE) {
|
|
flags2 = DISABLED;
|
|
scanfunc = ht->enablenode;
|
|
} else {
|
|
flags1 = DISABLED;
|
|
scanfunc = ht->disablenode;
|
|
}
|
|
|
|
/* Given no arguments, print the names of the enabled/disabled elements *
|
|
* in this hash table. If func == BIN_ENABLE, then scanhashtable will *
|
|
* print nodes NOT containing the DISABLED flag, else scanhashtable will *
|
|
* print nodes containing the DISABLED flag. */
|
|
if (!*argv) {
|
|
queue_signals();
|
|
scanhashtable(ht, 1, flags1, flags2, ht->printnode, 0);
|
|
unqueue_signals();
|
|
return 0;
|
|
}
|
|
|
|
/* With -m option, treat arguments as glob patterns. */
|
|
if (OPT_ISSET(ops,'m')) {
|
|
for (; *argv; argv++) {
|
|
/* parse pattern */
|
|
tokenize(*argv);
|
|
if ((pprog = patcompile(*argv, PAT_STATIC, 0))) {
|
|
queue_signals();
|
|
match += scanmatchtable(ht, pprog, 0, 0, scanfunc, 0);
|
|
unqueue_signals();
|
|
}
|
|
else {
|
|
untokenize(*argv);
|
|
zwarnnam(name, "bad pattern : %s", *argv, 0);
|
|
returnval = 1;
|
|
}
|
|
}
|
|
/* If we didn't match anything, we return 1. */
|
|
if (!match)
|
|
returnval = 1;
|
|
return returnval;
|
|
}
|
|
|
|
/* Take arguments literally -- do not glob */
|
|
queue_signals();
|
|
for (; *argv; argv++) {
|
|
if ((hn = ht->getnode2(ht, *argv))) {
|
|
scanfunc(hn, 0);
|
|
} else {
|
|
zwarnnam(name, "no such hash table element: %s", *argv, 0);
|
|
returnval = 1;
|
|
}
|
|
}
|
|
unqueue_signals();
|
|
return returnval;
|
|
}
|
|
|
|
/* set: either set the shell options, or set the shell arguments, *
|
|
* or declare an array, or show various things */
|
|
|
|
/**/
|
|
int
|
|
bin_set(char *nam, char **args, Options ops, int func)
|
|
{
|
|
int action, optno, array = 0, hadopt = 0,
|
|
hadplus = 0, hadend = 0, sort = 0;
|
|
char **x, *arrayname = NULL;
|
|
|
|
/* Obsolescent sh compatibility: set - is the same as set +xv *
|
|
* and set - args is the same as set +xv -- args */
|
|
if (*args && **args == '-' && !args[0][1]) {
|
|
dosetopt(VERBOSE, 0, 0);
|
|
dosetopt(XTRACE, 0, 0);
|
|
if (!args[1])
|
|
return 0;
|
|
}
|
|
|
|
/* loop through command line options (begins with "-" or "+") */
|
|
while (*args && (**args == '-' || **args == '+')) {
|
|
action = (**args == '-');
|
|
hadplus |= !action;
|
|
if(!args[0][1])
|
|
*args = "--";
|
|
while (*++*args) {
|
|
if(**args == Meta)
|
|
*++*args ^= 32;
|
|
if(**args != '-' || action)
|
|
hadopt = 1;
|
|
/* The pseudo-option `--' signifies the end of options. */
|
|
if (**args == '-') {
|
|
hadend = 1;
|
|
args++;
|
|
goto doneoptions;
|
|
} else if (**args == 'o') {
|
|
if (!*++*args)
|
|
args++;
|
|
if (!*args) {
|
|
printoptionstates(hadplus);
|
|
inittyptab();
|
|
return 0;
|
|
}
|
|
if(!(optno = optlookup(*args)))
|
|
zwarnnam(nam, "no such option: %s", *args, 0);
|
|
else if(dosetopt(optno, action, 0))
|
|
zwarnnam(nam, "can't change option: %s", *args, 0);
|
|
break;
|
|
} else if(**args == 'A') {
|
|
if(!*++*args)
|
|
args++;
|
|
array = action ? 1 : -1;
|
|
arrayname = *args;
|
|
if (!arrayname)
|
|
goto doneoptions;
|
|
else if (!isset(KSHARRAYS))
|
|
{
|
|
args++;
|
|
goto doneoptions;
|
|
}
|
|
break;
|
|
} else if (**args == 's')
|
|
sort = action ? 1 : -1;
|
|
else {
|
|
if (!(optno = optlookupc(**args)))
|
|
zwarnnam(nam, "bad option: -%c", NULL, **args);
|
|
else if(dosetopt(optno, action, 0))
|
|
zwarnnam(nam, "can't change option: -%c", NULL, **args);
|
|
}
|
|
}
|
|
args++;
|
|
}
|
|
doneoptions:
|
|
inittyptab();
|
|
|
|
/* Show the parameters, possibly with values */
|
|
queue_signals();
|
|
if (!arrayname)
|
|
{
|
|
if (!hadopt && !*args)
|
|
scanhashtable(paramtab, 1, 0, 0, paramtab->printnode,
|
|
hadplus ? PRINT_NAMEONLY : 0);
|
|
|
|
if (array) {
|
|
/* display arrays */
|
|
scanhashtable(paramtab, 1, PM_ARRAY, 0, paramtab->printnode,
|
|
hadplus ? PRINT_NAMEONLY : 0);
|
|
}
|
|
if (!*args && !hadend) {
|
|
unqueue_signals();
|
|
return 0;
|
|
}
|
|
}
|
|
if (sort)
|
|
qsort(args, arrlen(args), sizeof(char *),
|
|
sort > 0 ? strpcmp : invstrpcmp);
|
|
if (array) {
|
|
/* create an array with the specified elements */
|
|
char **a = NULL, **y;
|
|
int len = arrlen(args);
|
|
|
|
if (array < 0 && (a = getaparam(arrayname))) {
|
|
int al = arrlen(a);
|
|
|
|
if (al > len)
|
|
len = al;
|
|
}
|
|
for (x = y = zalloc((len + 1) * sizeof(char *)); len--; a++) {
|
|
if (!*args)
|
|
args = a;
|
|
*y++ = ztrdup(*args++);
|
|
}
|
|
*y++ = NULL;
|
|
setaparam(arrayname, x);
|
|
} else {
|
|
/* set shell arguments */
|
|
freearray(pparams);
|
|
pparams = zarrdup(args);
|
|
}
|
|
unqueue_signals();
|
|
return 0;
|
|
}
|
|
|
|
/**** directory-handling builtins ****/
|
|
|
|
/**/
|
|
int doprintdir = 0; /* set in exec.c (for autocd) */
|
|
|
|
/* pwd: display the name of the current directory */
|
|
|
|
/**/
|
|
int
|
|
bin_pwd(char *name, char **argv, Options ops, int func)
|
|
{
|
|
if (OPT_ISSET(ops,'r') || OPT_ISSET(ops,'P') ||
|
|
(isset(CHASELINKS) && !OPT_ISSET(ops,'L')))
|
|
printf("%s\n", zgetcwd());
|
|
else {
|
|
zputs(pwd, stdout);
|
|
putchar('\n');
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* the directory stack */
|
|
|
|
/**/
|
|
mod_export LinkList dirstack;
|
|
|
|
/* dirs: list the directory stack, or replace it with a provided list */
|
|
|
|
/**/
|
|
int
|
|
bin_dirs(char *name, char **argv, Options ops, int func)
|
|
{
|
|
LinkList l;
|
|
|
|
queue_signals();
|
|
/* with -v, -p or no arguments display the directory stack */
|
|
if (!(*argv || OPT_ISSET(ops,'c')) || OPT_ISSET(ops,'v') ||
|
|
OPT_ISSET(ops,'p')) {
|
|
LinkNode node;
|
|
char *fmt;
|
|
int pos = 1;
|
|
|
|
/* with the -v option, display a numbered list, starting at zero */
|
|
if (OPT_ISSET(ops,'v')) {
|
|
printf("0\t");
|
|
fmt = "\n%d\t";
|
|
/* with the -p option, display entries one per line */
|
|
} else if (OPT_ISSET(ops,'p'))
|
|
fmt = "\n";
|
|
else
|
|
fmt = " ";
|
|
if (OPT_ISSET(ops,'l'))
|
|
fputs(pwd, stdout);
|
|
else
|
|
fprintdir(pwd, stdout);
|
|
for (node = firstnode(dirstack); node; incnode(node)) {
|
|
printf(fmt, pos++);
|
|
if (OPT_ISSET(ops,'l'))
|
|
fputs(getdata(node), stdout);
|
|
else
|
|
fprintdir(getdata(node), stdout);
|
|
|
|
}
|
|
unqueue_signals();
|
|
putchar('\n');
|
|
return 0;
|
|
}
|
|
/* replace the stack with the specified directories */
|
|
l = znewlinklist();
|
|
while (*argv)
|
|
zaddlinknode(l, ztrdup(*argv++));
|
|
freelinklist(dirstack, freestr);
|
|
dirstack = l;
|
|
unqueue_signals();
|
|
return 0;
|
|
}
|
|
|
|
/* cd, chdir, pushd, popd */
|
|
|
|
/**/
|
|
void
|
|
set_pwd_env(void)
|
|
{
|
|
Param pm;
|
|
|
|
/* update the PWD and OLDPWD shell parameters */
|
|
|
|
pm = (Param) paramtab->getnode(paramtab, "PWD");
|
|
if (pm && PM_TYPE(pm->flags) != PM_SCALAR) {
|
|
pm->flags &= ~PM_READONLY;
|
|
unsetparam_pm(pm, 0, 1);
|
|
}
|
|
|
|
pm = (Param) paramtab->getnode(paramtab, "OLDPWD");
|
|
if (pm && PM_TYPE(pm->flags) != PM_SCALAR) {
|
|
pm->flags &= ~PM_READONLY;
|
|
unsetparam_pm(pm, 0, 1);
|
|
}
|
|
|
|
setsparam("PWD", ztrdup(pwd));
|
|
setsparam("OLDPWD", ztrdup(oldpwd));
|
|
|
|
pm = (Param) paramtab->getnode(paramtab, "PWD");
|
|
if (!(pm->flags & PM_EXPORTED)) {
|
|
pm->flags |= PM_EXPORTED;
|
|
pm->env = addenv("PWD", pwd, pm->flags);
|
|
}
|
|
pm = (Param) paramtab->getnode(paramtab, "OLDPWD");
|
|
if (!(pm->flags & PM_EXPORTED)) {
|
|
pm->flags |= PM_EXPORTED;
|
|
pm->env = addenv("OLDPWD", oldpwd, pm->flags);
|
|
}
|
|
}
|
|
|
|
/* set if we are resolving links to their true paths */
|
|
static int chasinglinks;
|
|
|
|
/* The main pwd changing function. The real work is done by other *
|
|
* functions. cd_get_dest() does the initial argument processing; *
|
|
* cd_do_chdir() actually changes directory, if possible; cd_new_pwd() *
|
|
* does the ancillary processing associated with actually changing *
|
|
* directory. */
|
|
|
|
/**/
|
|
int
|
|
bin_cd(char *nam, char **argv, Options ops, int func)
|
|
{
|
|
LinkNode dir;
|
|
struct stat st1, st2;
|
|
|
|
if (isset(RESTRICTED)) {
|
|
zwarnnam(nam, "restricted", NULL, 0);
|
|
return 1;
|
|
}
|
|
doprintdir = (doprintdir == -1);
|
|
|
|
chasinglinks = OPT_ISSET(ops,'P') ||
|
|
(isset(CHASELINKS) && !OPT_ISSET(ops,'L'));
|
|
queue_signals();
|
|
zpushnode(dirstack, ztrdup(pwd));
|
|
if (!(dir = cd_get_dest(nam, argv, OPT_ISSET(ops,'s'), func))) {
|
|
zsfree(getlinknode(dirstack));
|
|
unqueue_signals();
|
|
return 1;
|
|
}
|
|
cd_new_pwd(func, dir);
|
|
|
|
if (stat(unmeta(pwd), &st1) < 0) {
|
|
setjobpwd();
|
|
zsfree(pwd);
|
|
pwd = metafy(zgetcwd(), -1, META_DUP);
|
|
} else if (stat(".", &st2) < 0)
|
|
chdir(unmeta(pwd));
|
|
else if (st1.st_ino != st2.st_ino || st1.st_dev != st2.st_dev) {
|
|
if (chasinglinks) {
|
|
setjobpwd();
|
|
zsfree(pwd);
|
|
pwd = metafy(zgetcwd(), -1, META_DUP);
|
|
} else {
|
|
chdir(unmeta(pwd));
|
|
}
|
|
}
|
|
unqueue_signals();
|
|
return 0;
|
|
}
|
|
|
|
/* Get directory to chdir to */
|
|
|
|
/**/
|
|
static LinkNode
|
|
cd_get_dest(char *nam, char **argv, int hard, int func)
|
|
{
|
|
LinkNode dir = NULL;
|
|
LinkNode target;
|
|
char *dest;
|
|
|
|
if (!argv[0]) {
|
|
if (func == BIN_POPD && !nextnode(firstnode(dirstack))) {
|
|
zwarnnam(nam, "directory stack empty", NULL, 0);
|
|
return NULL;
|
|
}
|
|
if (func == BIN_PUSHD && unset(PUSHDTOHOME))
|
|
dir = nextnode(firstnode(dirstack));
|
|
if (dir)
|
|
zinsertlinknode(dirstack, dir, getlinknode(dirstack));
|
|
else if (func != BIN_POPD)
|
|
zpushnode(dirstack, ztrdup(home));
|
|
} else if (!argv[1]) {
|
|
int dd;
|
|
char *end;
|
|
|
|
doprintdir++;
|
|
if (argv[0][1] && (argv[0][0] == '+' || argv[0][0] == '-')) {
|
|
dd = zstrtol(argv[0] + 1, &end, 10);
|
|
if (*end == '\0') {
|
|
if ((argv[0][0] == '+') ^ isset(PUSHDMINUS))
|
|
for (dir = firstnode(dirstack); dir && dd; dd--, incnode(dir));
|
|
else
|
|
for (dir = lastnode(dirstack); dir != (LinkNode) dirstack && dd;
|
|
dd--, dir = prevnode(dir));
|
|
if (!dir || dir == (LinkNode) dirstack) {
|
|
zwarnnam(nam, "no such entry in dir stack", NULL, 0);
|
|
return NULL;
|
|
}
|
|
}
|
|
}
|
|
if (!dir)
|
|
zpushnode(dirstack, ztrdup(strcmp(argv[0], "-")
|
|
? (doprintdir--, argv[0]) : oldpwd));
|
|
} else {
|
|
char *u, *d;
|
|
int len1, len2, len3;
|
|
|
|
if (!(u = strstr(pwd, argv[0]))) {
|
|
zwarnnam(nam, "string not in pwd: %s", argv[0], 0);
|
|
return NULL;
|
|
}
|
|
len1 = strlen(argv[0]);
|
|
len2 = strlen(argv[1]);
|
|
len3 = u - pwd;
|
|
d = (char *)zalloc(len3 + len2 + strlen(u + len1) + 1);
|
|
strncpy(d, pwd, len3);
|
|
strcpy(d + len3, argv[1]);
|
|
strcat(d, u + len1);
|
|
zpushnode(dirstack, d);
|
|
doprintdir++;
|
|
}
|
|
|
|
target = dir;
|
|
if (func == BIN_POPD) {
|
|
if (!dir) {
|
|
target = dir = firstnode(dirstack);
|
|
} else if (dir != firstnode(dirstack)) {
|
|
return dir;
|
|
}
|
|
dir = nextnode(dir);
|
|
}
|
|
if (!dir) {
|
|
dir = firstnode(dirstack);
|
|
}
|
|
if (!(dest = cd_do_chdir(nam, getdata(dir), hard))) {
|
|
if (!target)
|
|
zsfree(getlinknode(dirstack));
|
|
if (func == BIN_POPD)
|
|
zsfree(remnode(dirstack, dir));
|
|
return NULL;
|
|
}
|
|
if (dest != (char *)getdata(dir)) {
|
|
zsfree(getdata(dir));
|
|
setdata(dir, dest);
|
|
}
|
|
return target ? target : dir;
|
|
}
|
|
|
|
/* Change to given directory, if possible. This function works out *
|
|
* exactly how the directory should be interpreted, including cdpath *
|
|
* and CDABLEVARS. For each possible interpretation of the given *
|
|
* path, this calls cd_try_chdir(), which attempts to chdir to that *
|
|
* particular path. */
|
|
|
|
/**/
|
|
static char *
|
|
cd_do_chdir(char *cnam, char *dest, int hard)
|
|
{
|
|
char **pp, *ret;
|
|
int hasdot = 0, eno = ENOENT;
|
|
/*
|
|
* nocdpath indicates that cdpath should not be used.
|
|
* This is the case iff dest is a relative path
|
|
* whose first segment is . or .., but if the path is
|
|
* absolute then cdpath won't be used anyway.
|
|
*/
|
|
int nocdpath;
|
|
#ifdef __CYGWIN__
|
|
/*
|
|
* Normalize path under Cygwin to avoid messing with
|
|
* DOS style names with drives in them
|
|
*/
|
|
static char buf[PATH_MAX];
|
|
void cygwin_conv_to_posix_path(const char *, char *);
|
|
|
|
cygwin_conv_to_posix_path(dest, buf);
|
|
dest = buf;
|
|
#endif
|
|
nocdpath = dest[0] == '.' &&
|
|
(dest[1] == '/' || !dest[1] || (dest[1] == '.' &&
|
|
(dest[2] == '/' || !dest[2])));
|
|
|
|
/*
|
|
* If we have an absolute path, use it as-is only
|
|
*/
|
|
if (*dest == '/') {
|
|
if ((ret = cd_try_chdir(NULL, dest, hard)))
|
|
return ret;
|
|
zwarnnam(cnam, "%e: %s", dest, errno);
|
|
return NULL;
|
|
}
|
|
|
|
/* if cdpath is being used, check it for . */
|
|
if (!nocdpath)
|
|
for (pp = cdpath; *pp; pp++)
|
|
if (!(*pp)[0] || ((*pp)[0] == '.' && (*pp)[1] == '\0'))
|
|
hasdot = 1;
|
|
/* if there is no . in cdpath (or it is not being used), try the directory
|
|
as-is (i.e. from .) */
|
|
if (!hasdot) {
|
|
if ((ret = cd_try_chdir(NULL, dest, hard)))
|
|
return ret;
|
|
if (errno != ENOENT)
|
|
eno = errno;
|
|
}
|
|
/* if cdpath is being used, try given directory relative to each element in
|
|
cdpath in turn */
|
|
if (!nocdpath)
|
|
for (pp = cdpath; *pp; pp++) {
|
|
if ((ret = cd_try_chdir(*pp, dest, hard))) {
|
|
if (strcmp(*pp, ".")) {
|
|
doprintdir++;
|
|
}
|
|
return ret;
|
|
}
|
|
if (errno != ENOENT)
|
|
eno = errno;
|
|
}
|
|
|
|
/* handle the CDABLEVARS option */
|
|
if ((ret = cd_able_vars(dest))) {
|
|
if ((ret = cd_try_chdir(NULL, ret,hard))) {
|
|
doprintdir++;
|
|
return ret;
|
|
}
|
|
if (errno != ENOENT)
|
|
eno = errno;
|
|
}
|
|
|
|
/* If we got here, it means that we couldn't chdir to any of the
|
|
multitudinous possible paths allowed by zsh. We've run out of options!
|
|
Add more here! */
|
|
zwarnnam(cnam, "%e: %s", dest, eno);
|
|
return NULL;
|
|
}
|
|
|
|
/* If the CDABLEVARS option is set, return the new *
|
|
* interpretation of the given path. */
|
|
|
|
/**/
|
|
char *
|
|
cd_able_vars(char *s)
|
|
{
|
|
char *rest, save;
|
|
|
|
if (isset(CDABLEVARS)) {
|
|
for (rest = s; *rest && *rest != '/'; rest++);
|
|
save = *rest;
|
|
*rest = 0;
|
|
s = getnameddir(s);
|
|
*rest = save;
|
|
|
|
if (s && *rest)
|
|
s = dyncat(s, rest);
|
|
|
|
return s;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/* Attempt to change to a single given directory. The directory, *
|
|
* for the convenience of the calling function, may be provided in *
|
|
* two parts, which must be concatenated before attempting to chdir. *
|
|
* Returns NULL if the chdir fails. If the directory change is *
|
|
* possible, it is performed, and a pointer to the new full pathname *
|
|
* is returned. */
|
|
|
|
/**/
|
|
static char *
|
|
cd_try_chdir(char *pfix, char *dest, int hard)
|
|
{
|
|
char *buf;
|
|
int dlen, dochaselinks = 0;
|
|
|
|
/* handle directory prefix */
|
|
if (pfix && *pfix) {
|
|
if (*pfix == '/')
|
|
buf = tricat(pfix, "/", dest);
|
|
else {
|
|
int pfl = strlen(pfix);
|
|
dlen = strlen(pwd);
|
|
|
|
buf = zalloc(dlen + pfl + strlen(dest) + 3);
|
|
strcpy(buf, pwd);
|
|
buf[dlen] = '/';
|
|
strcpy(buf + dlen + 1, pfix);
|
|
buf[dlen + 1 + pfl] = '/';
|
|
strcpy(buf + dlen + pfl + 2, dest);
|
|
}
|
|
} else if (*dest == '/')
|
|
buf = ztrdup(dest);
|
|
else {
|
|
dlen = strlen(pwd);
|
|
if (pwd[dlen-1] == '/')
|
|
--dlen;
|
|
buf = zalloc(dlen + strlen(dest) + 2);
|
|
strcpy(buf, pwd);
|
|
buf[dlen] = '/';
|
|
strcpy(buf + dlen + 1, dest);
|
|
}
|
|
|
|
/* Normalise path. See the definition of fixdir() for what this means.
|
|
* We do not do this if we are chasing links.
|
|
*/
|
|
if (!chasinglinks)
|
|
dochaselinks = fixdir(buf);
|
|
else
|
|
unmetafy(buf, &dlen);
|
|
|
|
/* We try the full path first. If that fails, try the
|
|
* argument to cd relatively. This is useful if the cwd
|
|
* or a parent directory is renamed in the interim.
|
|
*/
|
|
if (lchdir(buf, NULL, hard) && lchdir(dest, NULL, hard)) {
|
|
free(buf);
|
|
return NULL;
|
|
}
|
|
/* the chdir succeeded, so decide if we should force links to be chased */
|
|
if (dochaselinks)
|
|
chasinglinks = 1;
|
|
return metafy(buf, -1, META_NOALLOC);
|
|
}
|
|
|
|
/* do the extra processing associated with changing directory */
|
|
|
|
/**/
|
|
static void
|
|
cd_new_pwd(int func, LinkNode dir)
|
|
{
|
|
Eprog prog;
|
|
char *new_pwd, *s;
|
|
int dirstacksize;
|
|
|
|
if (func == BIN_PUSHD)
|
|
rolllist(dirstack, dir);
|
|
new_pwd = remnode(dirstack, dir);
|
|
|
|
if (func == BIN_POPD && firstnode(dirstack)) {
|
|
zsfree(new_pwd);
|
|
new_pwd = getlinknode(dirstack);
|
|
} else if (func == BIN_CD && unset(AUTOPUSHD))
|
|
zsfree(getlinknode(dirstack));
|
|
|
|
if (chasinglinks) {
|
|
s = new_pwd;
|
|
new_pwd = findpwd(s);
|
|
zsfree(s);
|
|
}
|
|
if (isset(PUSHDIGNOREDUPS)) {
|
|
LinkNode n;
|
|
for (n = firstnode(dirstack); n; incnode(n)) {
|
|
if (!strcmp(new_pwd, getdata(n))) {
|
|
zsfree(remnode(dirstack, n));
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* shift around the pwd variables, to make oldpwd and pwd relate to the
|
|
current (i.e. new) pwd */
|
|
zsfree(oldpwd);
|
|
oldpwd = pwd;
|
|
setjobpwd();
|
|
pwd = new_pwd;
|
|
set_pwd_env();
|
|
|
|
if (isset(INTERACTIVE)) {
|
|
if (unset(PUSHDSILENT) && func != BIN_CD)
|
|
printdirstack();
|
|
else if (doprintdir) {
|
|
fprintdir(pwd, stdout);
|
|
putchar('\n');
|
|
}
|
|
}
|
|
|
|
/* execute the chpwd function */
|
|
if ((prog = getshfunc("chpwd")) != &dummy_eprog) {
|
|
int osc = sfcontext;
|
|
|
|
fflush(stdout);
|
|
fflush(stderr);
|
|
sfcontext = SFC_HOOK;
|
|
doshfunc("chpwd", prog, NULL, 0, 1);
|
|
sfcontext = osc;
|
|
}
|
|
|
|
dirstacksize = getiparam("DIRSTACKSIZE");
|
|
/* handle directory stack sizes out of range */
|
|
if (dirstacksize > 0) {
|
|
int remove = countlinknodes(dirstack) -
|
|
(dirstacksize < 2 ? 2 : dirstacksize);
|
|
while (remove-- >= 0)
|
|
zsfree(remnode(dirstack, lastnode(dirstack)));
|
|
}
|
|
}
|
|
|
|
/* Print the directory stack */
|
|
|
|
/**/
|
|
static void
|
|
printdirstack(void)
|
|
{
|
|
LinkNode node;
|
|
|
|
fprintdir(pwd, stdout);
|
|
for (node = firstnode(dirstack); node; incnode(node)) {
|
|
putchar(' ');
|
|
fprintdir(getdata(node), stdout);
|
|
}
|
|
putchar('\n');
|
|
}
|
|
|
|
/* Normalise a path. Segments consisting of ., and foo/.. *
|
|
* combinations, are removed and the path is unmetafied.
|
|
* Returns 1 if we found a ../ path which should force links to
|
|
* be chased, 0 otherwise.
|
|
*/
|
|
|
|
/**/
|
|
int
|
|
fixdir(char *src)
|
|
{
|
|
char *dest = src, *d0 = dest;
|
|
#ifdef __CYGWIN__
|
|
char *s0 = src;
|
|
#endif
|
|
int ret = 0;
|
|
|
|
/*** if have RFS superroot directory ***/
|
|
#ifdef HAVE_SUPERROOT
|
|
/* allow /.. segments to remain */
|
|
while (*src == '/' && src[1] == '.' && src[2] == '.' &&
|
|
(!src[3] || src[3] == '/')) {
|
|
*dest++ = '/';
|
|
*dest++ = '.';
|
|
*dest++ = '.';
|
|
src += 3;
|
|
}
|
|
#endif
|
|
|
|
for (;;) {
|
|
/* compress multiple /es into single */
|
|
if (*src == '/') {
|
|
#ifdef __CYGWIN__
|
|
/* allow leading // under cygwin */
|
|
if (src == s0 && src[1] == '/')
|
|
*dest++ = *src++;
|
|
#endif
|
|
*dest++ = *src++;
|
|
while (*src == '/')
|
|
src++;
|
|
}
|
|
/* if we are at the end of the input path, remove a trailing / (if it
|
|
exists), and return ct */
|
|
if (!*src) {
|
|
while (dest > d0 + 1 && dest[-1] == '/')
|
|
dest--;
|
|
*dest = '\0';
|
|
return ret;
|
|
}
|
|
if (src[0] == '.' && src[1] == '.' &&
|
|
(src[2] == '\0' || src[2] == '/')) {
|
|
if (isset(CHASEDOTS)) {
|
|
ret = 1;
|
|
/* and treat as normal path segment */
|
|
} else {
|
|
if (dest > d0 + 1) {
|
|
/*
|
|
* remove a foo/.. combination:
|
|
* first check foo exists, else return.
|
|
*/
|
|
struct stat st;
|
|
*dest = '\0';
|
|
if (stat(d0, &st) < 0 || !S_ISDIR(st.st_mode)) {
|
|
char *ptrd, *ptrs;
|
|
if (dest == src)
|
|
*dest = '.';
|
|
for (ptrs = src, ptrd = dest; *ptrs; ptrs++, ptrd++)
|
|
*ptrd = (*ptrs == Meta) ? (*++ptrs ^ 32) : *ptrs;
|
|
*ptrd = '\0';
|
|
return 1;
|
|
}
|
|
for (dest--; dest > d0 + 1 && dest[-1] != '/'; dest--);
|
|
if (dest[-1] != '/')
|
|
dest--;
|
|
}
|
|
src++;
|
|
while (*++src == '/');
|
|
continue;
|
|
}
|
|
}
|
|
if (src[0] == '.' && (src[1] == '/' || src[1] == '\0')) {
|
|
/* skip a . section */
|
|
while (*++src == '/');
|
|
} else {
|
|
/* copy a normal segment into the output */
|
|
while (*src != '/' && *src != '\0')
|
|
if ((*dest++ = *src++) == Meta)
|
|
dest[-1] = *src++ ^ 32;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**/
|
|
mod_export void
|
|
printqt(char *str)
|
|
{
|
|
/* Print str, but turn any single quote into '\'' or ''. */
|
|
for (; *str; str++)
|
|
if (*str == '\'')
|
|
printf(isset(RCQUOTES) ? "''" : "'\\''");
|
|
else
|
|
putchar(*str);
|
|
}
|
|
|
|
/**/
|
|
mod_export void
|
|
printif(char *str, int c)
|
|
{
|
|
/* If flag c has an argument, print that */
|
|
if (str) {
|
|
printf(" -%c ", c);
|
|
quotedzputs(str, stdout);
|
|
}
|
|
}
|
|
|
|
/**** history list functions ****/
|
|
|
|
/* fc, history, r */
|
|
|
|
/**/
|
|
int
|
|
bin_fc(char *nam, char **argv, Options ops, int func)
|
|
{
|
|
int first = -1, last = -1, retval;
|
|
char *s;
|
|
struct asgment *asgf = NULL, *asgl = NULL;
|
|
Patprog pprog = NULL;
|
|
|
|
/* fc is only permitted in interactive shells */
|
|
if (!interact) {
|
|
zwarnnam(nam, "not interactive shell", NULL, 0);
|
|
return 1;
|
|
}
|
|
/* with the -m option, the first argument is taken *
|
|
* as a pattern that history lines have to match */
|
|
if (*argv && OPT_ISSET(ops,'m')) {
|
|
tokenize(*argv);
|
|
if (!(pprog = patcompile(*argv++, 0, NULL))) {
|
|
zwarnnam(nam, "invalid match pattern", NULL, 0);
|
|
return 1;
|
|
}
|
|
}
|
|
queue_signals();
|
|
if (OPT_ISSET(ops,'R')) {
|
|
/* read history from a file */
|
|
readhistfile(*argv, 1, OPT_ISSET(ops,'I') ? HFILE_SKIPOLD : 0);
|
|
unqueue_signals();
|
|
return 0;
|
|
}
|
|
if (OPT_ISSET(ops,'W')) {
|
|
/* write history to a file */
|
|
savehistfile(*argv, 1, OPT_ISSET(ops,'I') ? HFILE_SKIPOLD : 0);
|
|
unqueue_signals();
|
|
return 0;
|
|
}
|
|
if (OPT_ISSET(ops,'A')) {
|
|
/* append history to a file */
|
|
savehistfile(*argv, 1, HFILE_APPEND |
|
|
(OPT_ISSET(ops,'I') ? HFILE_SKIPOLD : 0));
|
|
unqueue_signals();
|
|
return 0;
|
|
}
|
|
/* put foo=bar type arguments into the substitution list */
|
|
while (*argv && equalsplit(*argv, &s)) {
|
|
Asgment a = (Asgment) zhalloc(sizeof *a);
|
|
|
|
if (!**argv) {
|
|
zwarnnam(nam, "invalid replacement pattern: =%s", s, 0);
|
|
return 1;
|
|
}
|
|
if (!asgf)
|
|
asgf = asgl = a;
|
|
else {
|
|
asgl->next = a;
|
|
asgl = a;
|
|
}
|
|
a->name = *argv;
|
|
a->value = s;
|
|
a->next = NULL;
|
|
argv++;
|
|
}
|
|
/* interpret and check first history line specifier */
|
|
if (*argv) {
|
|
first = fcgetcomm(*argv);
|
|
if (first == -1) {
|
|
unqueue_signals();
|
|
return 1;
|
|
}
|
|
argv++;
|
|
}
|
|
/* interpret and check second history line specifier */
|
|
if (*argv) {
|
|
last = fcgetcomm(*argv);
|
|
if (last == -1) {
|
|
unqueue_signals();
|
|
return 1;
|
|
}
|
|
argv++;
|
|
}
|
|
/* There is a maximum of two history specifiers. At least, there *
|
|
* will be as long as the history list is one-dimensional. */
|
|
if (*argv) {
|
|
unqueue_signals();
|
|
zwarnnam("fc", "too many arguments", NULL, 0);
|
|
return 1;
|
|
}
|
|
/* default values of first and last, and range checking */
|
|
if (last == -1) {
|
|
if (OPT_ISSET(ops,'l') && first < curhist) {
|
|
last = addhistnum(curline.histnum,-1,0);
|
|
if (last < firsthist())
|
|
last = firsthist();
|
|
}
|
|
else
|
|
last = first;
|
|
}
|
|
if (first == -1) {
|
|
first = OPT_ISSET(ops,'l')? addhistnum(curline.histnum,-16,0)
|
|
: addhistnum(curline.histnum,-1,0);
|
|
if (first < 1)
|
|
first = 1;
|
|
if (last < first)
|
|
last = first;
|
|
}
|
|
if (OPT_ISSET(ops,'l')) {
|
|
/* list the required part of the history */
|
|
retval = fclist(stdout, ops, first, last, asgf, pprog);
|
|
unqueue_signals();
|
|
}
|
|
else {
|
|
/* edit history file, and (if successful) use the result as a new command */
|
|
int tempfd;
|
|
FILE *out;
|
|
char *fil;
|
|
|
|
retval = 1;
|
|
fil = gettempname();
|
|
if (((tempfd = open(fil, O_WRONLY | O_CREAT | O_EXCL | O_NOCTTY, 0600))
|
|
== -1) ||
|
|
((out = fdopen(tempfd, "w")) == NULL)) {
|
|
unqueue_signals();
|
|
zwarnnam("fc", "can't open temp file: %e", NULL, errno);
|
|
} else {
|
|
ops->ind['n'] = 1; /* No line numbers here. */
|
|
if (!fclist(out, ops, first, last, asgf, pprog)) {
|
|
char *editor;
|
|
|
|
if (func == BIN_R)
|
|
editor = "-";
|
|
else if (OPT_HASARG(ops, 'e'))
|
|
editor = OPT_ARG(ops, 'e');
|
|
else
|
|
editor = getsparam("FCEDIT");
|
|
if (!editor)
|
|
editor = DEFAULT_FCEDIT;
|
|
|
|
unqueue_signals();
|
|
if (fcedit(editor, fil)) {
|
|
if (stuff(fil))
|
|
zwarnnam("fc", "%e: %s", s, errno);
|
|
else {
|
|
loop(0,1);
|
|
retval = lastval;
|
|
}
|
|
}
|
|
} else
|
|
unqueue_signals();
|
|
}
|
|
unlink(fil);
|
|
}
|
|
return retval;
|
|
}
|
|
|
|
/* History handling functions: these are called by ZLE, as well as *
|
|
* the actual builtins. fcgetcomm() gets a history line, specified *
|
|
* either by number or leading string. fcsubs() performs a given *
|
|
* set of simple old=new substitutions on a given command line. *
|
|
* fclist() outputs a given range of history lines to a text file. */
|
|
|
|
/* get the history event associated with s */
|
|
|
|
/**/
|
|
static int
|
|
fcgetcomm(char *s)
|
|
{
|
|
int cmd;
|
|
|
|
/* First try to match a history number. Negative *
|
|
* numbers indicate reversed numbering. */
|
|
if ((cmd = atoi(s)) != 0 || *s == '0') {
|
|
if (cmd < 0)
|
|
cmd = addhistnum(curline.histnum,cmd,HIST_FOREIGN);
|
|
if (cmd < 0)
|
|
cmd = 0;
|
|
return cmd;
|
|
}
|
|
/* not a number, so search by string */
|
|
cmd = hcomsearch(s);
|
|
if (cmd == -1)
|
|
zwarnnam("fc", "event not found: %s", s, 0);
|
|
return cmd;
|
|
}
|
|
|
|
/* Perform old=new substitutions. Uses the asgment structure from zsh.h, *
|
|
* which is essentially a linked list of string,replacement pairs. */
|
|
|
|
/**/
|
|
static int
|
|
fcsubs(char **sp, struct asgment *sub)
|
|
{
|
|
char *oldstr, *newstr, *oldpos, *newpos, *newmem, *s = *sp;
|
|
int subbed = 0;
|
|
|
|
/* loop through the linked list */
|
|
while (sub) {
|
|
oldstr = sub->name;
|
|
newstr = sub->value;
|
|
sub = sub->next;
|
|
oldpos = s;
|
|
/* loop over occurences of oldstr in s, replacing them with newstr */
|
|
while ((newpos = (char *)strstr(oldpos, oldstr))) {
|
|
newmem = (char *) zhalloc(1 + (newpos - s)
|
|
+ strlen(newstr) + strlen(newpos + strlen(oldstr)));
|
|
ztrncpy(newmem, s, newpos - s);
|
|
strcat(newmem, newstr);
|
|
oldpos = newmem + strlen(newmem);
|
|
strcat(newmem, newpos + strlen(oldstr));
|
|
s = newmem;
|
|
subbed = 1;
|
|
}
|
|
}
|
|
*sp = s;
|
|
return subbed;
|
|
}
|
|
|
|
/* Print a series of history events to a file. The file pointer is *
|
|
* given by f, and the required range of events by first and last. *
|
|
* subs is an optional list of foo=bar substitutions to perform on the *
|
|
* history lines before output. com is an optional comp structure *
|
|
* that the history lines are required to match. n, r, D and d are *
|
|
* options: n indicates that each line should be numbered. r indicates *
|
|
* that the lines should be output in reverse order (newest first). *
|
|
* D indicates that the real time taken by each command should be *
|
|
* output. d indicates that the time of execution of each command *
|
|
* should be output; d>1 means that the date should be output too; d>3 *
|
|
* means that mm/dd/yyyy form should be used for the dates, as opposed *
|
|
* to dd.mm.yyyy form; d>7 means that yyyy-mm-dd form should be used. */
|
|
|
|
/**/
|
|
static int
|
|
fclist(FILE *f, Options ops, int first, int last, struct asgment *subs, Patprog pprog)
|
|
{
|
|
int fclistdone = 0, tmp;
|
|
char *s;
|
|
Histent ent;
|
|
|
|
/* reverse range if required */
|
|
if (OPT_ISSET(ops,'r')) {
|
|
tmp = last;
|
|
last = first;
|
|
first = tmp;
|
|
}
|
|
/* suppress "no substitution" warning if no substitution is requested */
|
|
if (!subs)
|
|
fclistdone = 1;
|
|
|
|
ent = gethistent(first, first < last? GETHIST_DOWNWARD : GETHIST_UPWARD);
|
|
if (!ent || (first < last? ent->histnum > last : ent->histnum < last)) {
|
|
if (first == last)
|
|
zwarnnam("fc", "no such event: %d", NULL, first);
|
|
else
|
|
zwarnnam("fc", "no events in that range", NULL, 0);
|
|
return 1;
|
|
}
|
|
|
|
for (;;) {
|
|
s = dupstring(ent->text);
|
|
/* this if does the pattern matching, if required */
|
|
if (!pprog || pattry(pprog, s)) {
|
|
/* perform substitution */
|
|
fclistdone |= fcsubs(&s, subs);
|
|
|
|
/* do numbering */
|
|
if (!OPT_ISSET(ops,'n')) {
|
|
fprintf(f, "%5d%c ", ent->histnum,
|
|
ent->flags & HIST_FOREIGN? '*' : ' ');
|
|
}
|
|
/* output actual time (and possibly date) of execution of the
|
|
command, if required */
|
|
if (OPT_ISSET(ops,'d') || OPT_ISSET(ops,'f') ||
|
|
OPT_ISSET(ops,'E') || OPT_ISSET(ops,'i')) {
|
|
struct tm *ltm;
|
|
ltm = localtime(&ent->stim);
|
|
if (OPT_ISSET(ops,'i')) {
|
|
fprintf(f, "%d-%02d-%02d ",
|
|
ltm->tm_year + 1900,
|
|
ltm->tm_mon + 1, ltm->tm_mday);
|
|
} else if (OPT_ISSET(ops,'E')) {
|
|
fprintf(f, "%d.%d.%d ",
|
|
ltm->tm_mday, ltm->tm_mon + 1,
|
|
ltm->tm_year + 1900);
|
|
} else if (OPT_ISSET(ops,'f')) {
|
|
fprintf(f, "%d/%d/%d ",
|
|
ltm->tm_mon + 1, ltm->tm_mday,
|
|
ltm->tm_year + 1900);
|
|
}
|
|
fprintf(f, "%02d:%02d ", ltm->tm_hour, ltm->tm_min);
|
|
}
|
|
/* display the time taken by the command, if required */
|
|
if (OPT_ISSET(ops,'D')) {
|
|
long diff;
|
|
diff = (ent->ftim) ? ent->ftim - ent->stim : 0;
|
|
fprintf(f, "%ld:%02ld ", diff / 60, diff % 60);
|
|
}
|
|
|
|
/* output the command */
|
|
if (f == stdout) {
|
|
nicezputs(s, f);
|
|
putc('\n', f);
|
|
} else
|
|
fprintf(f, "%s\n", s);
|
|
}
|
|
/* move on to the next history line, or quit the loop */
|
|
if (first < last) {
|
|
if (!(ent = down_histent(ent)) || ent->histnum > last)
|
|
break;
|
|
}
|
|
else {
|
|
if (!(ent = up_histent(ent)) || ent->histnum < last)
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* final processing */
|
|
if (f != stdout)
|
|
fclose(f);
|
|
if (!fclistdone) {
|
|
zwarnnam("fc", "no substitutions performed", NULL, 0);
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* edit a history file */
|
|
|
|
/**/
|
|
static int
|
|
fcedit(char *ename, char *fn)
|
|
{
|
|
char *s;
|
|
|
|
if (!strcmp(ename, "-"))
|
|
return 1;
|
|
|
|
s = tricat(ename, " ", fn);
|
|
execstring(s, 1, 0);
|
|
zsfree(s);
|
|
|
|
return !lastval;
|
|
}
|
|
|
|
/**** parameter builtins ****/
|
|
|
|
/* Separate an argument into name=value parts, returning them in an *
|
|
* asgment structure. Because the asgment structure used is global, *
|
|
* only one of these can be active at a time. The string s gets placed *
|
|
* in this global structure, so it needs to be in permanent memory. */
|
|
|
|
/**/
|
|
static Asgment
|
|
getasg(char *s)
|
|
{
|
|
static struct asgment asg;
|
|
|
|
/* sanity check for valid argument */
|
|
if (!s)
|
|
return NULL;
|
|
|
|
/* check if name is empty */
|
|
if (*s == '=') {
|
|
zerr("bad assignment", NULL, 0);
|
|
return NULL;
|
|
}
|
|
asg.name = s;
|
|
|
|
/* search for `=' */
|
|
for (; *s && *s != '='; s++);
|
|
|
|
/* found `=', so return with a value */
|
|
if (*s) {
|
|
*s = '\0';
|
|
asg.value = s + 1;
|
|
} else {
|
|
/* didn't find `=', so we only have a name */
|
|
asg.value = NULL;
|
|
}
|
|
return &asg;
|
|
}
|
|
|
|
/* for new special parameters */
|
|
enum {
|
|
NS_NONE,
|
|
NS_NORMAL,
|
|
NS_SECONDS
|
|
};
|
|
|
|
/* function to set a single parameter */
|
|
|
|
/**/
|
|
static Param
|
|
typeset_single(char *cname, char *pname, Param pm, int func,
|
|
int on, int off, int roff, char *value, Param altpm,
|
|
Options ops, int auxlen, int joinchar)
|
|
{
|
|
int usepm, tc, keeplocal = 0, newspecial = NS_NONE, readonly;
|
|
char *subscript;
|
|
|
|
/*
|
|
* Do we use the existing pm? Note that this isn't the end of the
|
|
* story, because if we try and create a new pm at the same
|
|
* locallevel as an unset one we use the pm struct anyway: that's
|
|
* handled in createparam(). Here we just avoid using it for the
|
|
* present tests if it's unset.
|
|
*/
|
|
usepm = pm && !(pm->flags & PM_UNSET);
|
|
|
|
/*
|
|
* We need to compare types with an existing pm if special,
|
|
* even if that's unset
|
|
*/
|
|
if (pm && (pm->flags & PM_SPECIAL))
|
|
usepm = 1;
|
|
|
|
/*
|
|
* Don't use an existing param if
|
|
* - the local level has changed, and
|
|
* - we are really locallizing the parameter
|
|
*/
|
|
if (usepm && locallevel != pm->level && (on & PM_LOCAL)) {
|
|
/*
|
|
* If the original parameter was special and we're creating
|
|
* a new one, we need to keep it special.
|
|
*
|
|
* The -h (hide) flag prevents an existing special being made
|
|
* local. It can be applied either to the special or in the
|
|
* typeset/local statement for the local variable.
|
|
*/
|
|
if ((pm->flags & PM_SPECIAL)
|
|
&& !(on & PM_HIDE) && !(pm->flags & PM_HIDE & ~off))
|
|
newspecial = NS_NORMAL;
|
|
usepm = 0;
|
|
}
|
|
|
|
/* attempting a type conversion, or making a tied colonarray? */
|
|
tc = 0;
|
|
if (usepm || newspecial != NS_NONE) {
|
|
int chflags = ((off & pm->flags) | (on & ~pm->flags)) &
|
|
(PM_INTEGER|PM_EFLOAT|PM_FFLOAT|PM_HASHED|
|
|
PM_ARRAY|PM_TIED|PM_AUTOLOAD);
|
|
/* keep the parameter if just switching between floating types */
|
|
if ((tc = chflags && chflags != (PM_EFLOAT|PM_FFLOAT)))
|
|
usepm = 0;
|
|
}
|
|
|
|
/*
|
|
* Extra checks if converting the type of a parameter, or if
|
|
* trying to remove readonlyness. It's dangerous doing either
|
|
* with a special or a parameter which isn't loaded yet (which
|
|
* may be special when it is loaded; we can't tell yet).
|
|
*/
|
|
if ((readonly =
|
|
((usepm || newspecial != NS_NONE) &&
|
|
(off & pm->flags & PM_READONLY))) ||
|
|
tc) {
|
|
if (pm->flags & PM_SPECIAL) {
|
|
int err = 1;
|
|
if (!readonly && !strcmp(pname, "SECONDS"))
|
|
{
|
|
/*
|
|
* We allow SECONDS to change type between integer
|
|
* and floating point. If we are creating a new
|
|
* local copy we check the type here and allow
|
|
* a new special to be created with that type.
|
|
* We then need to make sure the correct type
|
|
* for the special is restored at the end of the scope.
|
|
* If we are changing the type of an existing
|
|
* parameter, we do the whole thing here.
|
|
*/
|
|
if (newspecial != NS_NONE)
|
|
{
|
|
/*
|
|
* The first test allows `typeset' to copy the
|
|
* existing type. This is the usual behaviour
|
|
* for making special parameters local.
|
|
*/
|
|
if (PM_TYPE(on) == 0 || PM_TYPE(on) == PM_INTEGER ||
|
|
PM_TYPE(on) == PM_FFLOAT || PM_TYPE(on) == PM_EFLOAT)
|
|
{
|
|
newspecial = NS_SECONDS;
|
|
err = 0; /* and continue */
|
|
tc = 0; /* but don't do a normal conversion */
|
|
}
|
|
} else if (!setsecondstype(pm, on, off)) {
|
|
if (value && !setsparam(pname, ztrdup(value)))
|
|
return NULL;
|
|
return pm;
|
|
}
|
|
}
|
|
if (err)
|
|
{
|
|
zerrnam(cname, "%s: can't change type of a special parameter",
|
|
pname, 0);
|
|
return NULL;
|
|
}
|
|
} else if (pm->flags & PM_AUTOLOAD) {
|
|
zerrnam(cname, "%s: can't change type of autoloaded parameter",
|
|
pname, 0);
|
|
return NULL;
|
|
}
|
|
}
|
|
else if (newspecial != NS_NONE && strcmp(pname, "SECONDS") == 0)
|
|
newspecial = NS_SECONDS;
|
|
|
|
/*
|
|
* A parameter will be local if
|
|
* 1. we are re-using an existing local parameter
|
|
* or
|
|
* 2. we are not using an existing parameter, but
|
|
* i. there is already a parameter, which will be hidden
|
|
* or
|
|
* ii. we are creating a new local parameter
|
|
*/
|
|
if (usepm) {
|
|
on &= ~PM_LOCAL;
|
|
if (!on && !roff && !value) {
|
|
if (OPT_ISSET(ops,'p'))
|
|
paramtab->printnode((HashNode)pm, PRINT_TYPESET);
|
|
else if (unset(TYPESETSILENT) || OPT_ISSET(ops,'m'))
|
|
paramtab->printnode((HashNode)pm, PRINT_INCLUDEVALUE);
|
|
return pm;
|
|
}
|
|
if ((pm->flags & PM_RESTRICTED) && isset(RESTRICTED)) {
|
|
zerrnam(cname, "%s: restricted", pname, 0);
|
|
return pm;
|
|
}
|
|
if ((on & PM_UNIQUE) && !(pm->flags & PM_READONLY & ~off)) {
|
|
Param apm;
|
|
char **x;
|
|
if (PM_TYPE(pm->flags) == PM_ARRAY) {
|
|
x = (*pm->gets.afn)(pm);
|
|
uniqarray(x);
|
|
if (pm->ename && x)
|
|
arrfixenv(pm->ename, x);
|
|
} else if (PM_TYPE(pm->flags) == PM_SCALAR && pm->ename &&
|
|
(apm =
|
|
(Param) paramtab->getnode(paramtab, pm->ename))) {
|
|
x = (*apm->gets.afn)(apm);
|
|
uniqarray(x);
|
|
if (x)
|
|
arrfixenv(pm->nam, x);
|
|
}
|
|
}
|
|
pm->flags = (pm->flags | (on & ~PM_READONLY)) & ~(off | PM_UNSET);
|
|
/* This auxlen/pm->ct stuff is a nasty hack. */
|
|
if ((on & (PM_LEFT | PM_RIGHT_B | PM_RIGHT_Z | PM_INTEGER |
|
|
PM_EFLOAT | PM_FFLOAT)) &&
|
|
auxlen)
|
|
pm->ct = auxlen;
|
|
if (!(pm->flags & (PM_ARRAY|PM_HASHED))) {
|
|
if (pm->flags & PM_EXPORTED) {
|
|
if (!(pm->flags & PM_UNSET) && !pm->env && !value)
|
|
pm->env = addenv(pname, getsparam(pname), pm->flags);
|
|
} else if (pm->env && !(pm->flags & PM_HASHELEM)) {
|
|
delenv(pm->env);
|
|
pm->env = NULL;
|
|
}
|
|
if (value && !(pm = setsparam(pname, ztrdup(value))))
|
|
return NULL;
|
|
} else if (value) {
|
|
zwarnnam(cname, "can't assign new value for array %s", pname, 0);
|
|
return NULL;
|
|
}
|
|
pm->flags |= (on & PM_READONLY);
|
|
if (OPT_ISSET(ops,'p'))
|
|
paramtab->printnode((HashNode)pm, PRINT_TYPESET);
|
|
return pm;
|
|
}
|
|
|
|
/*
|
|
* We're here either because we're creating a new parameter,
|
|
* or we're adding a parameter at a different local level,
|
|
* or we're converting the type of a parameter. In the
|
|
* last case only, we need to delete the old parameter.
|
|
*/
|
|
if (tc) {
|
|
/* Maintain existing readonly/exported status... */
|
|
on |= ~off & (PM_READONLY|PM_EXPORTED) & pm->flags;
|
|
/* ...but turn off existing readonly so we can delete it */
|
|
pm->flags &= ~PM_READONLY;
|
|
/*
|
|
* If we're just changing the type, we should keep the
|
|
* variable at the current level of localness.
|
|
*/
|
|
keeplocal = pm->level;
|
|
/*
|
|
* Try to carry over a value, but not when changing from,
|
|
* to, or between non-scalar types.
|
|
*/
|
|
if (!value && !((pm->flags|on) & (PM_ARRAY|PM_HASHED)))
|
|
value = dupstring(getsparam(pname));
|
|
/* pname may point to pm->nam which is about to disappear */
|
|
pname = dupstring(pname);
|
|
unsetparam_pm(pm, 0, 1);
|
|
}
|
|
|
|
if (newspecial != NS_NONE) {
|
|
Param tpm, pm2;
|
|
if ((pm->flags & PM_RESTRICTED) && isset(RESTRICTED)) {
|
|
zerrnam(cname, "%s: restricted", pname, 0);
|
|
return pm;
|
|
}
|
|
/*
|
|
* For specials, we keep the same struct but zero everything.
|
|
* Maybe it would be easier to create a new struct but copy
|
|
* the get/set methods.
|
|
*/
|
|
tpm = (Param) zalloc(sizeof *tpm);
|
|
|
|
tpm->nam = pm->nam;
|
|
if (pm->ename &&
|
|
(pm2 = (Param) paramtab->getnode(paramtab, pm->ename)) &&
|
|
pm2->level == locallevel) {
|
|
/* This is getting silly, but anyway: if one of a path/PATH
|
|
* pair has already been made local at the current level, we
|
|
* have to make sure that the other one does not have its value
|
|
* saved: since that comes from an internal variable it will
|
|
* already reflect the local value, so restoring it on exit
|
|
* would be wrong.
|
|
*
|
|
* This problem is also why we make sure we have a copy
|
|
* of the environment entry in tpm->env, rather than relying
|
|
* on the restored value to provide it.
|
|
*/
|
|
tpm->flags = pm->flags | PM_NORESTORE;
|
|
} else {
|
|
copyparam(tpm, pm, 1);
|
|
}
|
|
tpm->old = pm->old;
|
|
tpm->level = pm->level;
|
|
tpm->ct = pm->ct;
|
|
if (pm->env) {
|
|
delenv(pm->env);
|
|
}
|
|
tpm->env = pm->env = NULL;
|
|
|
|
pm->old = tpm;
|
|
/*
|
|
* The remaining on/off flags should be harmless to use,
|
|
* because we've checked for unpleasant surprises above.
|
|
*/
|
|
pm->flags = (PM_TYPE(pm->flags) | on | PM_SPECIAL) & ~off;
|
|
if (newspecial == NS_SECONDS) {
|
|
/* We save off the raw internal value of the SECONDS var */
|
|
tpm->u.dval = getrawseconds();
|
|
setsecondstype(pm, on, off);
|
|
}
|
|
|
|
/*
|
|
* Final tweak: if we've turned on one of the flags with
|
|
* numbers, we should use the appropriate integer.
|
|
*/
|
|
if (on & (PM_LEFT|PM_RIGHT_B|PM_RIGHT_Z|PM_INTEGER|
|
|
PM_EFLOAT|PM_FFLOAT))
|
|
pm->ct = auxlen;
|
|
else
|
|
pm->ct = 0;
|
|
} else if ((subscript = strchr(pname, '['))) {
|
|
if (on & PM_READONLY) {
|
|
zerrnam(cname,
|
|
"%s: can't create readonly array elements", pname, 0);
|
|
return NULL;
|
|
} else if (on & PM_LOCAL) {
|
|
*subscript = 0;
|
|
pm = (Param) (paramtab == realparamtab ?
|
|
gethashnode2(paramtab, pname) :
|
|
paramtab->getnode(paramtab, pname));
|
|
*subscript = '[';
|
|
if (!pm || pm->level != locallevel) {
|
|
zerrnam(cname,
|
|
"%s: can't create local array elements", pname, 0);
|
|
return NULL;
|
|
}
|
|
}
|
|
if (PM_TYPE(on) == PM_SCALAR) {
|
|
/*
|
|
* This will either complain about bad identifiers, or will set
|
|
* a hash element or array slice. This once worked by accident,
|
|
* creating a stray parameter along the way via createparam(),
|
|
* now called below in the isident() branch.
|
|
*/
|
|
if (!(pm = setsparam(pname, ztrdup(value ? value : ""))))
|
|
return NULL;
|
|
value = NULL;
|
|
keeplocal = 0;
|
|
on = pm->flags;
|
|
} else {
|
|
zerrnam(cname,
|
|
"%s: array elements must be scalar", pname, 0);
|
|
return NULL;
|
|
}
|
|
} else if (isident(pname) && !idigit(*pname)) {
|
|
/*
|
|
* Create a new node for a parameter with the flags in `on' minus the
|
|
* readonly flag
|
|
*/
|
|
pm = createparam(pname, on & ~PM_READONLY);
|
|
DPUTS(!pm, "BUG: parameter not created");
|
|
pm->ct = auxlen;
|
|
} else {
|
|
if (isident(pname))
|
|
zerrnam(cname, "not valid in this context: %s", pname, 0);
|
|
else
|
|
zerrnam(cname, "not an identifier: %s", pname, 0);
|
|
return NULL;
|
|
}
|
|
|
|
if (altpm && PM_TYPE(pm->flags) == PM_SCALAR) {
|
|
/*
|
|
* It seems safer to set this here than in createparam(),
|
|
* to make sure we only ever use the colonarr functions
|
|
* when u.data is correctly set.
|
|
*/
|
|
struct tieddata *tdp = (struct tieddata *)
|
|
zalloc(sizeof(struct tieddata));
|
|
if (!tdp)
|
|
return NULL;
|
|
tdp->joinchar = joinchar;
|
|
tdp->arrptr = &altpm->u.arr;
|
|
|
|
pm->sets.cfn = tiedarrsetfn;
|
|
pm->gets.cfn = tiedarrgetfn;
|
|
pm->unsetfn = tiedarrunsetfn;
|
|
pm->u.data = tdp;
|
|
}
|
|
|
|
if (keeplocal)
|
|
pm->level = keeplocal;
|
|
else if (on & PM_LOCAL)
|
|
pm->level = locallevel;
|
|
if (value && !(pm->flags & (PM_ARRAY|PM_HASHED))) {
|
|
Param ipm = pm;
|
|
if (!(pm = setsparam(pname, ztrdup(value))))
|
|
return NULL;
|
|
if (pm != ipm) {
|
|
DPUTS(ipm->flags != pm->flags,
|
|
"BUG: parameter recreated with wrong flags");
|
|
unsetparam_pm(ipm, 0, 1);
|
|
}
|
|
} else if (newspecial != NS_NONE && !(pm->old->flags & PM_NORESTORE)) {
|
|
/*
|
|
* We need to use the special setting function to re-initialise
|
|
* the special parameter to empty.
|
|
*/
|
|
switch (PM_TYPE(pm->flags)) {
|
|
case PM_SCALAR:
|
|
pm->sets.cfn(pm, ztrdup(""));
|
|
break;
|
|
case PM_INTEGER:
|
|
pm->sets.ifn(pm, 0);
|
|
break;
|
|
case PM_EFLOAT:
|
|
case PM_FFLOAT:
|
|
pm->sets.ffn(pm, 0.0);
|
|
break;
|
|
case PM_ARRAY:
|
|
pm->sets.afn(pm, mkarray(NULL));
|
|
break;
|
|
case PM_HASHED:
|
|
pm->sets.hfn(pm, newparamtable(17, pm->nam));
|
|
break;
|
|
}
|
|
}
|
|
pm->flags |= (on & PM_READONLY);
|
|
if (value && (pm->flags & (PM_ARRAY|PM_HASHED))) {
|
|
zerrnam(cname, "%s: can't assign initial value for array", pname, 0);
|
|
/* the only safe thing to do here seems to be unset the param */
|
|
unsetparam_pm(pm, 0, 1);
|
|
return NULL;
|
|
}
|
|
|
|
if (OPT_ISSET(ops,'p'))
|
|
paramtab->printnode((HashNode)pm, PRINT_TYPESET);
|
|
|
|
return pm;
|
|
}
|
|
|
|
/* declare, export, integer, local, readonly, typeset */
|
|
|
|
/**/
|
|
int
|
|
bin_typeset(char *name, char **argv, Options ops, int func)
|
|
{
|
|
Param pm;
|
|
Asgment asg;
|
|
Patprog pprog;
|
|
char *optstr = TYPESET_OPTSTR;
|
|
int on = 0, off = 0, roff, bit = PM_ARRAY;
|
|
int i;
|
|
int returnval = 0, printflags = 0, auxlen = 0;
|
|
|
|
/* hash -f is really the builtin `functions' */
|
|
if (OPT_ISSET(ops,'f'))
|
|
return bin_functions(name, argv, ops, func);
|
|
|
|
/* Translate the options into PM_* flags. *
|
|
* Unfortunately, this depends on the order *
|
|
* these flags are defined in zsh.h */
|
|
for (; *optstr; optstr++, bit <<= 1)
|
|
{
|
|
int optval = STOUC(*optstr);
|
|
if (OPT_MINUS(ops,optval))
|
|
on |= bit;
|
|
else if (OPT_PLUS(ops,optval))
|
|
off |= bit;
|
|
/*
|
|
* There is only a single field in struct param for widths,
|
|
* precisions and bases. Until this gets fixed, we can therefore
|
|
* bundle all optional arguments up into a single word. You
|
|
* may think this is very nasty, but then you should have seen the
|
|
* code before option arguments were handled properly.
|
|
*/
|
|
if (OPT_HASARG(ops,optval)) {
|
|
char *eptr, *arg = OPT_ARG(ops,optval);
|
|
auxlen = (int)zstrtol(arg, &eptr, 10);
|
|
if (*eptr) {
|
|
zwarnnam(name, "bad integer value: %s", arg, 0);
|
|
return 1;
|
|
}
|
|
}
|
|
}
|
|
roff = off;
|
|
|
|
/* Sanity checks on the options. Remove conflicting options. */
|
|
if (on & PM_FFLOAT) {
|
|
off |= PM_RIGHT_B | PM_LEFT | PM_RIGHT_Z | PM_UPPER | PM_ARRAY |
|
|
PM_HASHED | PM_INTEGER | PM_EFLOAT;
|
|
/* Allow `float -F' to work even though float sets -E by default */
|
|
on &= ~PM_EFLOAT;
|
|
}
|
|
if (on & PM_EFLOAT)
|
|
off |= PM_RIGHT_B | PM_LEFT | PM_RIGHT_Z | PM_UPPER | PM_ARRAY |
|
|
PM_HASHED | PM_INTEGER | PM_FFLOAT;
|
|
if (on & PM_INTEGER)
|
|
off |= PM_RIGHT_B | PM_LEFT | PM_RIGHT_Z | PM_UPPER | PM_ARRAY |
|
|
PM_HASHED | PM_EFLOAT | PM_FFLOAT;
|
|
if (on & PM_LEFT)
|
|
off |= PM_RIGHT_B | PM_INTEGER | PM_EFLOAT | PM_FFLOAT;
|
|
if (on & PM_RIGHT_B)
|
|
off |= PM_LEFT | PM_INTEGER | PM_EFLOAT | PM_FFLOAT;
|
|
if (on & PM_RIGHT_Z)
|
|
off |= PM_INTEGER | PM_EFLOAT | PM_FFLOAT;
|
|
if (on & PM_UPPER)
|
|
off |= PM_LOWER;
|
|
if (on & PM_LOWER)
|
|
off |= PM_UPPER;
|
|
if (on & PM_HASHED)
|
|
off |= PM_ARRAY;
|
|
if (on & PM_TIED)
|
|
off |= PM_INTEGER | PM_EFLOAT | PM_FFLOAT | PM_ARRAY | PM_HASHED;
|
|
|
|
on &= ~off;
|
|
|
|
queue_signals();
|
|
|
|
/* Given no arguments, list whatever the options specify. */
|
|
if (OPT_ISSET(ops,'p'))
|
|
printflags |= PRINT_TYPESET;
|
|
if (!*argv) {
|
|
if (!OPT_ISSET(ops,'p')) {
|
|
if (!(on|roff))
|
|
printflags |= PRINT_TYPE;
|
|
if (roff || OPT_ISSET(ops,'+'))
|
|
printflags |= PRINT_NAMEONLY;
|
|
}
|
|
scanhashtable(paramtab, 1, on|roff, 0, paramtab->printnode, printflags);
|
|
unqueue_signals();
|
|
return 0;
|
|
}
|
|
|
|
if (!(OPT_ISSET(ops,'g') || OPT_ISSET(ops,'x') || OPT_ISSET(ops,'m')) ||
|
|
OPT_PLUS(ops,'g') || *name == 'l' ||
|
|
(!isset(GLOBALEXPORT) && !OPT_ISSET(ops,'g')))
|
|
on |= PM_LOCAL;
|
|
|
|
if (on & PM_TIED) {
|
|
Param apm;
|
|
struct asgment asg0;
|
|
char *oldval = NULL;
|
|
int joinchar;
|
|
|
|
if (OPT_ISSET(ops,'m')) {
|
|
zwarnnam(name, "incompatible options for -T", NULL, 0);
|
|
unqueue_signals();
|
|
return 1;
|
|
}
|
|
on &= ~off;
|
|
if (!argv[1] || (argv[2] && argv[3])) {
|
|
zwarnnam(name, "-T requires names of scalar and array", NULL, 0);
|
|
unqueue_signals();
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Third argument, if given, is character used to join
|
|
* the elements of the array in the scalar.
|
|
*/
|
|
if (!argv[2])
|
|
joinchar = ':';
|
|
else if (!*argv[2])
|
|
joinchar = 0;
|
|
else if (*argv[2] == Meta)
|
|
joinchar = argv[2][1] ^ 32;
|
|
else
|
|
joinchar = *argv[2];
|
|
|
|
if (!(asg = getasg(argv[0]))) {
|
|
unqueue_signals();
|
|
return 1;
|
|
}
|
|
asg0 = *asg;
|
|
if (!(asg = getasg(argv[1]))) {
|
|
unqueue_signals();
|
|
return 1;
|
|
}
|
|
if (!strcmp(asg0.name, asg->name)) {
|
|
unqueue_signals();
|
|
zerrnam(name, "can't tie a variable to itself", NULL, 0);
|
|
return 1;
|
|
}
|
|
if (strchr(asg0.name, '[') || strchr(asg->name, '[')) {
|
|
unqueue_signals();
|
|
zerrnam(name, "can't tie array elements", NULL, 0);
|
|
return 1;
|
|
}
|
|
/*
|
|
* Keep the old value of the scalar. We need to do this
|
|
* here as if it is already tied to the same array it
|
|
* will be unset when we retie the array. This is all
|
|
* so that typeset -T is idempotent.
|
|
*
|
|
* We also need to remember here whether the damn thing is
|
|
* exported and pass that along. Isn't the world complicated?
|
|
*/
|
|
if ((pm = (Param) paramtab->getnode(paramtab, asg0.name))
|
|
&& !(pm->flags & PM_UNSET)
|
|
&& (locallevel == pm->level || !(on & PM_LOCAL))) {
|
|
if (!asg0.value && !(PM_TYPE(pm->flags) & (PM_ARRAY|PM_HASHED)))
|
|
oldval = ztrdup(getsparam(asg0.name));
|
|
on |= (pm->flags & PM_EXPORTED);
|
|
}
|
|
/*
|
|
* Create the tied array; this is normal except that
|
|
* it has the PM_TIED flag set. Do it first because
|
|
* we need the address.
|
|
*/
|
|
if (!(apm=typeset_single(name, asg->name,
|
|
(Param)paramtab->getnode(paramtab,
|
|
asg->name),
|
|
func, (on | PM_ARRAY) & ~PM_EXPORTED,
|
|
off, roff, asg->value, NULL, ops, auxlen,
|
|
0))) {
|
|
unqueue_signals();
|
|
return 1;
|
|
}
|
|
/*
|
|
* Create the tied colonarray. We make it as a normal scalar
|
|
* and fix up the oddities later.
|
|
*/
|
|
if (!(pm=typeset_single(name, asg0.name,
|
|
(Param)paramtab->getnode(paramtab,
|
|
asg0.name),
|
|
func, on, off, roff, asg0.value, apm,
|
|
ops, auxlen, joinchar))) {
|
|
if (oldval)
|
|
zsfree(oldval);
|
|
unsetparam_pm(apm, 1, 1);
|
|
unqueue_signals();
|
|
return 1;
|
|
}
|
|
|
|
pm->ename = ztrdup(asg->name);
|
|
apm->ename = ztrdup(asg0.name);
|
|
if (oldval)
|
|
setsparam(asg0.name, oldval);
|
|
unqueue_signals();
|
|
|
|
return 0;
|
|
}
|
|
if (off & PM_TIED) {
|
|
zerrnam(name, "use unset to remove tied variables", NULL, 0);
|
|
return 1;
|
|
}
|
|
|
|
/* With the -m option, treat arguments as glob patterns */
|
|
if (OPT_ISSET(ops,'m')) {
|
|
if (!OPT_ISSET(ops,'p')) {
|
|
if (!(on|roff))
|
|
printflags |= PRINT_TYPE;
|
|
if (!on)
|
|
printflags |= PRINT_NAMEONLY;
|
|
}
|
|
|
|
while ((asg = getasg(*argv++))) {
|
|
LinkList pmlist = newlinklist();
|
|
LinkNode pmnode;
|
|
|
|
tokenize(asg->name); /* expand argument */
|
|
if (!(pprog = patcompile(asg->name, 0, NULL))) {
|
|
untokenize(asg->name);
|
|
zwarnnam(name, "bad pattern : %s", argv[-1], 0);
|
|
returnval = 1;
|
|
continue;
|
|
}
|
|
if (OPT_PLUS(ops,'m') && !asg->value) {
|
|
scanmatchtable(paramtab, pprog, on|roff, 0,
|
|
paramtab->printnode, printflags);
|
|
continue;
|
|
}
|
|
/*
|
|
* Search through the parameter table and change all parameters
|
|
* matching the glob pattern to have these flags and/or value.
|
|
* Bad news: if the parameter gets altered, e.g. by
|
|
* a type conversion, then paramtab can be shifted around,
|
|
* so we need to store the parameters to alter on a separate
|
|
* list for later use.
|
|
*/
|
|
for (i = 0; i < paramtab->hsize; i++) {
|
|
for (pm = (Param) paramtab->nodes[i]; pm;
|
|
pm = (Param) pm->next) {
|
|
if (((pm->flags & PM_RESTRICTED) && isset(RESTRICTED)) ||
|
|
(pm->flags & PM_UNSET))
|
|
continue;
|
|
if (pattry(pprog, pm->nam))
|
|
addlinknode(pmlist, pm);
|
|
}
|
|
}
|
|
for (pmnode = firstnode(pmlist); pmnode; incnode(pmnode)) {
|
|
pm = (Param) getdata(pmnode);
|
|
if (!typeset_single(name, pm->nam, pm, func, on, off, roff,
|
|
asg->value, NULL, ops, auxlen, 0))
|
|
returnval = 1;
|
|
}
|
|
}
|
|
unqueue_signals();
|
|
return returnval;
|
|
}
|
|
|
|
/* Take arguments literally. Don't glob */
|
|
while ((asg = getasg(*argv++))) {
|
|
if (!typeset_single(name, asg->name,
|
|
(Param) (paramtab == realparamtab ?
|
|
gethashnode2(paramtab, asg->name) :
|
|
paramtab->getnode(paramtab, asg->name)),
|
|
func, on, off, roff, asg->value, NULL,
|
|
ops, auxlen, 0))
|
|
returnval = 1;
|
|
}
|
|
unqueue_signals();
|
|
return returnval;
|
|
}
|
|
|
|
/* Helper for bin_functions() when run as "autoload -X" */
|
|
|
|
/**/
|
|
int
|
|
eval_autoload(Shfunc shf, char *name, Options ops, int func)
|
|
{
|
|
if (!(shf->flags & PM_UNDEFINED))
|
|
return 1;
|
|
|
|
if (shf->funcdef) {
|
|
freeeprog(shf->funcdef);
|
|
shf->funcdef = &dummy_eprog;
|
|
}
|
|
if (OPT_MINUS(ops,'X')) {
|
|
char *fargv[3];
|
|
fargv[0] = name;
|
|
fargv[1] = "\"$@\"";
|
|
fargv[2] = 0;
|
|
shf->funcdef = mkautofn(shf);
|
|
return bin_eval(name, fargv, ops, func);
|
|
}
|
|
|
|
return !loadautofn(shf, (OPT_ISSET(ops,'k') ? 2 :
|
|
(OPT_ISSET(ops,'z') ? 0 : 1)), 1);
|
|
}
|
|
|
|
/* Display or change the attributes of shell functions. *
|
|
* If called as autoload, it will define a new autoloaded *
|
|
* (undefined) shell function. */
|
|
|
|
/**/
|
|
int
|
|
bin_functions(char *name, char **argv, Options ops, int func)
|
|
{
|
|
Patprog pprog;
|
|
Shfunc shf;
|
|
int i, returnval = 0;
|
|
int on = 0, off = 0, pflags = 0;
|
|
|
|
/* Do we have any flags defined? */
|
|
if (OPT_PLUS(ops,'u'))
|
|
off |= PM_UNDEFINED;
|
|
else if (OPT_MINUS(ops,'u') || OPT_ISSET(ops,'X'))
|
|
on |= PM_UNDEFINED;
|
|
if (OPT_MINUS(ops,'U'))
|
|
on |= PM_UNALIASED|PM_UNDEFINED;
|
|
else if (OPT_PLUS(ops,'U'))
|
|
off |= PM_UNALIASED;
|
|
if (OPT_MINUS(ops,'t'))
|
|
on |= PM_TAGGED;
|
|
else if (OPT_PLUS(ops,'t'))
|
|
off |= PM_TAGGED;
|
|
|
|
if ((off & PM_UNDEFINED) || (OPT_ISSET(ops,'k') && OPT_ISSET(ops,'z')) ||
|
|
(!OPT_PLUS(ops,'X') && (OPT_ISSET(ops,'k') || OPT_ISSET(ops,'z'))) ||
|
|
(OPT_MINUS(ops,'X') && (OPT_ISSET(ops,'m') || *argv || !scriptname))) {
|
|
zwarnnam(name, "invalid option(s)", NULL, 0);
|
|
return 1;
|
|
}
|
|
|
|
if (OPT_PLUS(ops,'f') || OPT_ISSET(ops,'+'))
|
|
pflags |= PRINT_NAMEONLY;
|
|
|
|
/* If no arguments given, we will print functions. If flags *
|
|
* are given, we will print only functions containing these *
|
|
* flags, else we'll print them all. */
|
|
if (!*argv) {
|
|
int ret = 0;
|
|
|
|
queue_signals();
|
|
if (OPT_MINUS(ops,'X')) {
|
|
if ((shf = (Shfunc) shfunctab->getnode(shfunctab, scriptname))) {
|
|
DPUTS(!shf->funcdef,
|
|
"BUG: Calling autoload from empty function");
|
|
} else {
|
|
shf = (Shfunc) zshcalloc(sizeof *shf);
|
|
shfunctab->addnode(shfunctab, ztrdup(scriptname), shf);
|
|
}
|
|
shf->flags = on;
|
|
ret = eval_autoload(shf, scriptname, ops, func);
|
|
} else {
|
|
if (OPT_ISSET(ops,'U') && !OPT_ISSET(ops,'u'))
|
|
on &= ~PM_UNDEFINED;
|
|
scanhashtable(shfunctab, 1, on|off, DISABLED, shfunctab->printnode,
|
|
pflags);
|
|
}
|
|
unqueue_signals();
|
|
return ret;
|
|
}
|
|
|
|
/* With the -m option, treat arguments as glob patterns */
|
|
if (OPT_ISSET(ops,'m')) {
|
|
on &= ~PM_UNDEFINED;
|
|
for (; *argv; argv++) {
|
|
/* expand argument */
|
|
tokenize(*argv);
|
|
if ((pprog = patcompile(*argv, PAT_STATIC, 0))) {
|
|
/* with no options, just print all functions matching the glob pattern */
|
|
queue_signals();
|
|
if (!(on|off)) {
|
|
scanmatchtable(shfunctab, pprog, 0, DISABLED,
|
|
shfunctab->printnode, pflags);
|
|
} else {
|
|
/* apply the options to all functions matching the glob pattern */
|
|
for (i = 0; i < shfunctab->hsize; i++) {
|
|
for (shf = (Shfunc) shfunctab->nodes[i]; shf;
|
|
shf = (Shfunc) shf->next)
|
|
if (pattry(pprog, shf->nam) &&
|
|
!(shf->flags & DISABLED)) {
|
|
shf->flags = (shf->flags |
|
|
(on & ~PM_UNDEFINED)) & ~off;
|
|
if (OPT_ISSET(ops,'X') &&
|
|
eval_autoload(shf, shf->nam, ops, func)) {
|
|
returnval = 1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
unqueue_signals();
|
|
} else {
|
|
untokenize(*argv);
|
|
zwarnnam(name, "bad pattern : %s", *argv, 0);
|
|
returnval = 1;
|
|
}
|
|
}
|
|
return returnval;
|
|
}
|
|
|
|
/* Take the arguments literally -- do not glob */
|
|
queue_signals();
|
|
for (; *argv; argv++) {
|
|
if (OPT_ISSET(ops,'w'))
|
|
returnval = dump_autoload(name, *argv, on, ops, func);
|
|
else if ((shf = (Shfunc) shfunctab->getnode(shfunctab, *argv))) {
|
|
/* if any flag was given */
|
|
if (on|off) {
|
|
/* turn on/off the given flags */
|
|
shf->flags = (shf->flags | (on & ~PM_UNDEFINED)) & ~off;
|
|
if (OPT_ISSET(ops,'X') &&
|
|
eval_autoload(shf, shf->nam, ops, func))
|
|
returnval = 1;
|
|
} else
|
|
/* no flags, so just print */
|
|
shfunctab->printnode((HashNode) shf, pflags);
|
|
} else if (on & PM_UNDEFINED) {
|
|
/* Add a new undefined (autoloaded) function to the *
|
|
* hash table with the corresponding flags set. */
|
|
shf = (Shfunc) zshcalloc(sizeof *shf);
|
|
shf->flags = on;
|
|
shf->funcdef = mkautofn(shf);
|
|
shfunctab->addnode(shfunctab, ztrdup(*argv), shf);
|
|
if (OPT_ISSET(ops,'X') && eval_autoload(shf, shf->nam, ops, func))
|
|
returnval = 1;
|
|
} else
|
|
returnval = 1;
|
|
}
|
|
unqueue_signals();
|
|
return returnval;
|
|
}
|
|
|
|
/**/
|
|
Eprog
|
|
mkautofn(Shfunc shf)
|
|
{
|
|
Eprog p;
|
|
|
|
p = (Eprog) zalloc(sizeof(*p));
|
|
p->len = 5 * sizeof(wordcode);
|
|
p->prog = (Wordcode) zalloc(p->len);
|
|
p->strs = NULL;
|
|
p->shf = shf;
|
|
p->npats = 0;
|
|
p->nref = 1; /* allocated from permanent storage */
|
|
p->pats = (Patprog *) p->prog;
|
|
p->flags = EF_REAL;
|
|
p->dump = NULL;
|
|
|
|
p->prog[0] = WCB_LIST((Z_SYNC | Z_END), 0);
|
|
p->prog[1] = WCB_SUBLIST(WC_SUBLIST_END, 0, 3);
|
|
p->prog[2] = WCB_PIPE(WC_PIPE_END, 0);
|
|
p->prog[3] = WCB_AUTOFN();
|
|
p->prog[4] = WCB_END();
|
|
|
|
return p;
|
|
}
|
|
|
|
/* unset: unset parameters */
|
|
|
|
/**/
|
|
int
|
|
bin_unset(char *name, char **argv, Options ops, int func)
|
|
{
|
|
Param pm, next;
|
|
Patprog pprog;
|
|
char *s;
|
|
int match = 0, returnval = 0;
|
|
int i;
|
|
|
|
/* unset -f is the same as unfunction */
|
|
if (OPT_ISSET(ops,'f'))
|
|
return bin_unhash(name, argv, ops, func);
|
|
|
|
/* with -m option, treat arguments as glob patterns */
|
|
if (OPT_ISSET(ops,'m')) {
|
|
while ((s = *argv++)) {
|
|
/* expand */
|
|
tokenize(s);
|
|
if ((pprog = patcompile(s, PAT_STATIC, NULL))) {
|
|
/* Go through the parameter table, and unset any matches */
|
|
queue_signals();
|
|
for (i = 0; i < paramtab->hsize; i++) {
|
|
for (pm = (Param) paramtab->nodes[i]; pm; pm = next) {
|
|
/* record pointer to next, since we may free this one */
|
|
next = (Param) pm->next;
|
|
if ((!(pm->flags & PM_RESTRICTED) ||
|
|
unset(RESTRICTED)) &&
|
|
pattry(pprog, pm->nam)) {
|
|
unsetparam_pm(pm, 0, 1);
|
|
match++;
|
|
}
|
|
}
|
|
}
|
|
unqueue_signals();
|
|
} else {
|
|
untokenize(s);
|
|
zwarnnam(name, "bad pattern : %s", s, 0);
|
|
returnval = 1;
|
|
}
|
|
}
|
|
/* If we didn't match anything, we return 1. */
|
|
if (!match)
|
|
returnval = 1;
|
|
return returnval;
|
|
}
|
|
|
|
/* do not glob -- unset the given parameter */
|
|
queue_signals();
|
|
while ((s = *argv++)) {
|
|
char *ss = strchr(s, '[');
|
|
char *sse = ss;
|
|
if (ss) {
|
|
if (skipparens('[', ']', &sse) || *sse) {
|
|
zerrnam(name, "%s: invalid parameter name", s, 0);
|
|
returnval = 1;
|
|
continue;
|
|
}
|
|
*ss = 0;
|
|
}
|
|
pm = (Param) (paramtab == realparamtab ?
|
|
gethashnode2(paramtab, s) :
|
|
paramtab->getnode(paramtab, s));
|
|
if (!pm)
|
|
returnval = 1;
|
|
else if ((pm->flags & PM_RESTRICTED) && isset(RESTRICTED)) {
|
|
zerrnam(name, "%s: restricted", pm->nam, 0);
|
|
returnval = 1;
|
|
} else if (ss) {
|
|
if (PM_TYPE(pm->flags) == PM_HASHED) {
|
|
HashTable tht = paramtab;
|
|
if ((paramtab = pm->gets.hfn(pm))) {
|
|
*--sse = 0;
|
|
unsetparam(ss+1);
|
|
*sse = ']';
|
|
}
|
|
paramtab = tht;
|
|
} else {
|
|
zerrnam(name, "%s: invalid element for unset", s, 0);
|
|
returnval = 1;
|
|
}
|
|
} else {
|
|
if (unsetparam_pm(pm, 0, 1))
|
|
returnval = 1;
|
|
}
|
|
if (ss)
|
|
*ss = '[';
|
|
}
|
|
unqueue_signals();
|
|
return returnval;
|
|
}
|
|
|
|
/* type, whence, which, command */
|
|
|
|
/**/
|
|
int
|
|
bin_whence(char *nam, char **argv, Options ops, int func)
|
|
{
|
|
HashNode hn;
|
|
Patprog pprog;
|
|
int returnval = 0;
|
|
int printflags = 0;
|
|
int aliasflags;
|
|
int csh, all, v, wd;
|
|
int informed;
|
|
char *cnam;
|
|
|
|
/* Check some option information */
|
|
csh = OPT_ISSET(ops,'c');
|
|
v = OPT_ISSET(ops,'v');
|
|
all = OPT_ISSET(ops,'a');
|
|
wd = OPT_ISSET(ops,'w');
|
|
|
|
if (OPT_ISSET(ops,'w'))
|
|
printflags |= PRINT_WHENCE_WORD;
|
|
else if (OPT_ISSET(ops,'c'))
|
|
printflags |= PRINT_WHENCE_CSH;
|
|
else if (OPT_ISSET(ops,'v'))
|
|
printflags |= PRINT_WHENCE_VERBOSE;
|
|
else
|
|
printflags |= PRINT_WHENCE_SIMPLE;
|
|
if (OPT_ISSET(ops,'f'))
|
|
printflags |= PRINT_WHENCE_FUNCDEF;
|
|
|
|
if (func == BIN_COMMAND)
|
|
if (OPT_ISSET(ops,'V')) {
|
|
printflags = aliasflags = PRINT_WHENCE_VERBOSE;
|
|
v = 1;
|
|
} else {
|
|
aliasflags = PRINT_LIST;
|
|
printflags = PRINT_WHENCE_SIMPLE;
|
|
v = 0;
|
|
}
|
|
else
|
|
aliasflags = printflags;
|
|
|
|
/* With -m option -- treat arguments as a glob patterns */
|
|
if (OPT_ISSET(ops,'m')) {
|
|
for (; *argv; argv++) {
|
|
/* parse the pattern */
|
|
tokenize(*argv);
|
|
if (!(pprog = patcompile(*argv, PAT_STATIC, NULL))) {
|
|
untokenize(*argv);
|
|
zwarnnam(nam, "bad pattern : %s", *argv, 0);
|
|
returnval = 1;
|
|
continue;
|
|
}
|
|
queue_signals();
|
|
if (!OPT_ISSET(ops,'p')) {
|
|
/* -p option is for path search only. *
|
|
* We're not using it, so search for ... */
|
|
|
|
/* aliases ... */
|
|
scanmatchtable(aliastab, pprog, 0, DISABLED,
|
|
aliastab->printnode, printflags);
|
|
|
|
/* and reserved words ... */
|
|
scanmatchtable(reswdtab, pprog, 0, DISABLED,
|
|
reswdtab->printnode, printflags);
|
|
|
|
/* and shell functions... */
|
|
scanmatchtable(shfunctab, pprog, 0, DISABLED,
|
|
shfunctab->printnode, printflags);
|
|
|
|
/* and builtins. */
|
|
scanmatchtable(builtintab, pprog, 0, DISABLED,
|
|
builtintab->printnode, printflags);
|
|
}
|
|
/* Done search for `internal' commands, if the -p option *
|
|
* was not used. Now search the path. */
|
|
cmdnamtab->filltable(cmdnamtab);
|
|
scanmatchtable(cmdnamtab, pprog, 0, 0,
|
|
cmdnamtab->printnode, printflags);
|
|
|
|
unqueue_signals();
|
|
}
|
|
return returnval;
|
|
}
|
|
|
|
/* Take arguments literally -- do not glob */
|
|
queue_signals();
|
|
for (; *argv; argv++) {
|
|
informed = 0;
|
|
|
|
if (!OPT_ISSET(ops,'p')) {
|
|
char *suf;
|
|
|
|
/* Look for alias */
|
|
if ((hn = aliastab->getnode(aliastab, *argv))) {
|
|
aliastab->printnode(hn, aliasflags);
|
|
if (!all)
|
|
continue;
|
|
informed = 1;
|
|
}
|
|
/* Look for suffix alias */
|
|
if ((suf = strrchr(*argv, '.')) && suf[1] &&
|
|
suf > *argv && suf[-1] != Meta &&
|
|
(hn = sufaliastab->getnode(sufaliastab, suf+1))) {
|
|
sufaliastab->printnode(hn, printflags);
|
|
if (!all)
|
|
continue;
|
|
informed = 1;
|
|
}
|
|
/* Look for reserved word */
|
|
if ((hn = reswdtab->getnode(reswdtab, *argv))) {
|
|
reswdtab->printnode(hn, printflags);
|
|
if (!all)
|
|
continue;
|
|
informed = 1;
|
|
}
|
|
/* Look for shell function */
|
|
if ((hn = shfunctab->getnode(shfunctab, *argv))) {
|
|
shfunctab->printnode(hn, printflags);
|
|
if (!all)
|
|
continue;
|
|
informed = 1;
|
|
}
|
|
/* Look for builtin command */
|
|
if ((hn = builtintab->getnode(builtintab, *argv))) {
|
|
builtintab->printnode(hn, printflags);
|
|
if (!all)
|
|
continue;
|
|
informed = 1;
|
|
}
|
|
/* Look for commands that have been added to the *
|
|
* cmdnamtab with the builtin `hash foo=bar'. */
|
|
if ((hn = cmdnamtab->getnode(cmdnamtab, *argv)) && (hn->flags & HASHED)) {
|
|
cmdnamtab->printnode(hn, printflags);
|
|
if (!all)
|
|
continue;
|
|
informed = 1;
|
|
}
|
|
}
|
|
|
|
/* Option -a is to search the entire path, *
|
|
* rather than just looking for one match. */
|
|
if (all) {
|
|
char **pp, *buf;
|
|
|
|
pushheap();
|
|
for (pp = path; *pp; pp++) {
|
|
if (**pp) {
|
|
buf = zhtricat(*pp, "/", *argv);
|
|
} else buf = ztrdup(*argv);
|
|
|
|
if (iscom(buf)) {
|
|
if (wd) {
|
|
printf("%s: command\n", *argv);
|
|
} else {
|
|
if (v && !csh)
|
|
zputs(*argv, stdout), fputs(" is ", stdout);
|
|
zputs(buf, stdout);
|
|
if (OPT_ISSET(ops,'s'))
|
|
print_if_link(buf);
|
|
fputc('\n', stdout);
|
|
}
|
|
informed = 1;
|
|
}
|
|
}
|
|
if (!informed && (wd || v || csh)) {
|
|
zputs(*argv, stdout);
|
|
puts(wd ? ": none" : " not found");
|
|
returnval = 1;
|
|
}
|
|
popheap();
|
|
} else if ((cnam = findcmd(*argv, 1))) {
|
|
/* Found external command. */
|
|
if (wd) {
|
|
printf("%s: command\n", *argv);
|
|
} else {
|
|
if (v && !csh)
|
|
zputs(*argv, stdout), fputs(" is ", stdout);
|
|
zputs(cnam, stdout);
|
|
if (OPT_ISSET(ops,'s'))
|
|
print_if_link(cnam);
|
|
fputc('\n', stdout);
|
|
}
|
|
} else {
|
|
/* Not found at all. */
|
|
if (v || csh || wd)
|
|
zputs(*argv, stdout), puts(wd ? ": none" : " not found");
|
|
returnval = 1;
|
|
}
|
|
}
|
|
unqueue_signals();
|
|
return returnval;
|
|
}
|
|
|
|
/**** command & named directory hash table builtins ****/
|
|
|
|
/*****************************************************************
|
|
* hash -- explicitly hash a command. *
|
|
* 1) Given no arguments, list the hash table. *
|
|
* 2) The -m option prints out commands in the hash table that *
|
|
* match a given glob pattern. *
|
|
* 3) The -f option causes the entire path to be added to the *
|
|
* hash table (cannot be combined with any arguments). *
|
|
* 4) The -r option causes the entire hash table to be discarded *
|
|
* (cannot be combined with any arguments). *
|
|
* 5) Given argument of the form foo=bar, add element to command *
|
|
* hash table, so that when `foo' is entered, then `bar' is *
|
|
* executed. *
|
|
* 6) Given arguments not of the previous form, add it to the *
|
|
* command hash table as if it were being executed. *
|
|
* 7) The -d option causes analogous things to be done using *
|
|
* the named directory hash table. *
|
|
*****************************************************************/
|
|
|
|
/**/
|
|
int
|
|
bin_hash(char *name, char **argv, Options ops, int func)
|
|
{
|
|
HashTable ht;
|
|
Patprog pprog;
|
|
Asgment asg;
|
|
int returnval = 0;
|
|
int printflags = 0;
|
|
|
|
if (OPT_ISSET(ops,'d'))
|
|
ht = nameddirtab;
|
|
else
|
|
ht = cmdnamtab;
|
|
|
|
if (OPT_ISSET(ops,'r') || OPT_ISSET(ops,'f')) {
|
|
/* -f and -r can't be used with any arguments */
|
|
if (*argv) {
|
|
zwarnnam("hash", "too many arguments", NULL, 0);
|
|
return 1;
|
|
}
|
|
|
|
/* empty the hash table */
|
|
if (OPT_ISSET(ops,'r'))
|
|
ht->emptytable(ht);
|
|
|
|
/* fill the hash table in a standard way */
|
|
if (OPT_ISSET(ops,'f'))
|
|
ht->filltable(ht);
|
|
|
|
return 0;
|
|
}
|
|
|
|
if (OPT_ISSET(ops,'L')) printflags |= PRINT_LIST;
|
|
|
|
/* Given no arguments, display current hash table. */
|
|
if (!*argv) {
|
|
queue_signals();
|
|
scanhashtable(ht, 1, 0, 0, ht->printnode, printflags);
|
|
unqueue_signals();
|
|
return 0;
|
|
}
|
|
|
|
queue_signals();
|
|
while (*argv) {
|
|
void *hn;
|
|
if (OPT_ISSET(ops,'m')) {
|
|
/* with the -m option, treat the argument as a glob pattern */
|
|
tokenize(*argv); /* expand */
|
|
if ((pprog = patcompile(*argv, PAT_STATIC, NULL))) {
|
|
/* display matching hash table elements */
|
|
scanmatchtable(ht, pprog, 0, 0, ht->printnode, printflags);
|
|
} else {
|
|
untokenize(*argv);
|
|
zwarnnam(name, "bad pattern : %s", *argv, 0);
|
|
returnval = 1;
|
|
}
|
|
} else if ((asg = getasg(*argv)) && asg->value) {
|
|
if(isset(RESTRICTED)) {
|
|
zwarnnam(name, "restricted: %s", asg->value, 0);
|
|
returnval = 1;
|
|
} else {
|
|
/* The argument is of the form foo=bar, *
|
|
* so define an entry for the table. */
|
|
if(OPT_ISSET(ops,'d')) {
|
|
Nameddir nd = hn = zshcalloc(sizeof *nd);
|
|
nd->flags = 0;
|
|
nd->dir = ztrdup(asg->value);
|
|
} else {
|
|
Cmdnam cn = hn = zshcalloc(sizeof *cn);
|
|
cn->flags = HASHED;
|
|
cn->u.cmd = ztrdup(asg->value);
|
|
}
|
|
ht->addnode(ht, ztrdup(asg->name), hn);
|
|
if(OPT_ISSET(ops,'v'))
|
|
ht->printnode(hn, 0);
|
|
}
|
|
} else if (!(hn = ht->getnode2(ht, asg->name))) {
|
|
/* With no `=value' part to the argument, *
|
|
* work out what it ought to be. */
|
|
if(OPT_ISSET(ops,'d')) {
|
|
if(!getnameddir(asg->name)) {
|
|
zwarnnam(name, "no such directory name: %s", asg->name, 0);
|
|
returnval = 1;
|
|
}
|
|
} else {
|
|
if (!hashcmd(asg->name, path)) {
|
|
zwarnnam(name, "no such command: %s", asg->name, 0);
|
|
returnval = 1;
|
|
}
|
|
}
|
|
if(OPT_ISSET(ops,'v') && (hn = ht->getnode2(ht, asg->name)))
|
|
ht->printnode(hn, 0);
|
|
} else if(OPT_ISSET(ops,'v'))
|
|
ht->printnode(hn, 0);
|
|
argv++;
|
|
}
|
|
unqueue_signals();
|
|
return returnval;
|
|
}
|
|
|
|
/* unhash: remove specified elements from a hash table */
|
|
|
|
/**/
|
|
int
|
|
bin_unhash(char *name, char **argv, Options ops, int func)
|
|
{
|
|
HashTable ht;
|
|
HashNode hn, nhn;
|
|
Patprog pprog;
|
|
int match = 0, returnval = 0;
|
|
int i;
|
|
|
|
/* Check which hash table we are working with. */
|
|
if (OPT_ISSET(ops,'d'))
|
|
ht = nameddirtab; /* named directories */
|
|
else if (OPT_ISSET(ops,'f'))
|
|
ht = shfunctab; /* shell functions */
|
|
else if (OPT_ISSET(ops,'s'))
|
|
ht = sufaliastab; /* suffix aliases, must precede aliases */
|
|
else if (OPT_ISSET(ops,'a'))
|
|
ht = aliastab; /* aliases */
|
|
else
|
|
ht = cmdnamtab; /* external commands */
|
|
|
|
/* With -m option, treat arguments as glob patterns. *
|
|
* "unhash -m '*'" is legal, but not recommended. */
|
|
if (OPT_ISSET(ops,'m')) {
|
|
for (; *argv; argv++) {
|
|
/* expand argument */
|
|
tokenize(*argv);
|
|
if ((pprog = patcompile(*argv, PAT_STATIC, NULL))) {
|
|
/* remove all nodes matching glob pattern */
|
|
queue_signals();
|
|
for (i = 0; i < ht->hsize; i++) {
|
|
for (hn = ht->nodes[i]; hn; hn = nhn) {
|
|
/* record pointer to next, since we may free this one */
|
|
nhn = hn->next;
|
|
if (pattry(pprog, hn->nam)) {
|
|
ht->freenode(ht->removenode(ht, hn->nam));
|
|
match++;
|
|
}
|
|
}
|
|
}
|
|
unqueue_signals();
|
|
} else {
|
|
untokenize(*argv);
|
|
zwarnnam(name, "bad pattern : %s", *argv, 0);
|
|
returnval = 1;
|
|
}
|
|
}
|
|
/* If we didn't match anything, we return 1. */
|
|
if (!match)
|
|
returnval = 1;
|
|
return returnval;
|
|
}
|
|
|
|
/* Take arguments literally -- do not glob */
|
|
queue_signals();
|
|
for (; *argv; argv++) {
|
|
if ((hn = ht->removenode(ht, *argv))) {
|
|
ht->freenode(hn);
|
|
} else {
|
|
zwarnnam(name, "no such hash table element: %s", *argv, 0);
|
|
returnval = 1;
|
|
}
|
|
}
|
|
unqueue_signals();
|
|
return returnval;
|
|
}
|
|
|
|
/**** alias builtins ****/
|
|
|
|
/* alias: display or create aliases. */
|
|
|
|
/**/
|
|
int
|
|
bin_alias(char *name, char **argv, Options ops, int func)
|
|
{
|
|
Alias a;
|
|
Patprog pprog;
|
|
Asgment asg;
|
|
int returnval = 0;
|
|
int flags1 = 0, flags2 = DISABLED;
|
|
int printflags = 0;
|
|
int type_opts;
|
|
HashTable ht = aliastab;
|
|
|
|
/* Did we specify the type of alias? */
|
|
type_opts = OPT_ISSET(ops, 'r') + OPT_ISSET(ops, 'g') +
|
|
OPT_ISSET(ops, 's');
|
|
if (type_opts) {
|
|
if (type_opts > 1) {
|
|
zwarnnam(name, "illegal combination of options", NULL, 0);
|
|
return 1;
|
|
}
|
|
if (OPT_ISSET(ops,'g'))
|
|
flags1 |= ALIAS_GLOBAL;
|
|
else
|
|
flags2 |= ALIAS_GLOBAL;
|
|
if (OPT_ISSET(ops, 's')) {
|
|
/*
|
|
* Although we keep suffix aliases in a different table,
|
|
* it is useful to be able to distinguish Alias structures
|
|
* without reference to the table, so we have a separate
|
|
* flag, too.
|
|
*/
|
|
flags1 |= ALIAS_SUFFIX;
|
|
ht = sufaliastab;
|
|
} else
|
|
flags2 |= ALIAS_SUFFIX;
|
|
}
|
|
|
|
if (OPT_ISSET(ops,'L'))
|
|
printflags |= PRINT_LIST;
|
|
else if (OPT_PLUS(ops,'g') || OPT_PLUS(ops,'r') || OPT_PLUS(ops,'s') ||
|
|
OPT_PLUS(ops,'m') || OPT_ISSET(ops,'+'))
|
|
printflags |= PRINT_NAMEONLY;
|
|
|
|
/* In the absence of arguments, list all aliases. If a command *
|
|
* line flag is specified, list only those of that type. */
|
|
if (!*argv) {
|
|
queue_signals();
|
|
scanhashtable(ht, 1, flags1, flags2, ht->printnode, printflags);
|
|
unqueue_signals();
|
|
return 0;
|
|
}
|
|
|
|
/* With the -m option, treat the arguments as *
|
|
* glob patterns of aliases to display. */
|
|
if (OPT_ISSET(ops,'m')) {
|
|
for (; *argv; argv++) {
|
|
tokenize(*argv); /* expand argument */
|
|
if ((pprog = patcompile(*argv, PAT_STATIC, NULL))) {
|
|
/* display the matching aliases */
|
|
queue_signals();
|
|
scanmatchtable(ht, pprog, flags1, flags2,
|
|
ht->printnode, printflags);
|
|
unqueue_signals();
|
|
} else {
|
|
untokenize(*argv);
|
|
zwarnnam(name, "bad pattern : %s", *argv, 0);
|
|
returnval = 1;
|
|
}
|
|
}
|
|
return returnval;
|
|
}
|
|
|
|
/* Take arguments literally. Don't glob */
|
|
queue_signals();
|
|
while ((asg = getasg(*argv++))) {
|
|
if (asg->value && !OPT_ISSET(ops,'L')) {
|
|
/* The argument is of the form foo=bar and we are not *
|
|
* forcing a listing with -L, so define an alias */
|
|
ht->addnode(ht, ztrdup(asg->name),
|
|
createaliasnode(ztrdup(asg->value), flags1));
|
|
} else if ((a = (Alias) ht->getnode(ht, asg->name))) {
|
|
/* display alias if appropriate */
|
|
if (!type_opts || ht == sufaliastab ||
|
|
(OPT_ISSET(ops,'r') &&
|
|
!(a->flags & (ALIAS_GLOBAL|ALIAS_SUFFIX))) ||
|
|
(OPT_ISSET(ops,'g') && (a->flags & ALIAS_GLOBAL)))
|
|
ht->printnode((HashNode) a, printflags);
|
|
} else
|
|
returnval = 1;
|
|
}
|
|
unqueue_signals();
|
|
return returnval;
|
|
}
|
|
|
|
|
|
/**** miscellaneous builtins ****/
|
|
|
|
/* true, : (colon) */
|
|
|
|
/**/
|
|
int
|
|
bin_true(char *name, char **argv, Options ops, int func)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
/* false builtin */
|
|
|
|
/**/
|
|
int
|
|
bin_false(char *name, char **argv, Options ops, int func)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
/* the zle buffer stack */
|
|
|
|
/**/
|
|
mod_export LinkList bufstack;
|
|
|
|
/* echo, print, printf, pushln */
|
|
|
|
#define print_val(VAL) \
|
|
if (prec >= 0) \
|
|
count += fprintf(fout, spec, width, prec, VAL); \
|
|
else \
|
|
count += fprintf(fout, spec, width, VAL);
|
|
|
|
/**/
|
|
int
|
|
bin_print(char *name, char **args, Options ops, int func)
|
|
{
|
|
int flen, width, prec, type, argc, n, narg;
|
|
int nnl = 0, ret = 0, maxarg = 0;
|
|
int flags[5], *len;
|
|
char *start, *endptr, *c, *d, *flag, *buf, spec[11], *fmt = NULL;
|
|
char **first, *curarg, *flagch = "0+- #", save = '\0', nullstr = '\0';
|
|
size_t rcount, count = 0;
|
|
#ifdef HAVE_OPEN_MEMSTREAM
|
|
size_t mcount;
|
|
#endif
|
|
FILE *fout = stdout;
|
|
Histent ent;
|
|
|
|
mnumber mnumval;
|
|
double doubleval;
|
|
int intval;
|
|
zlong zlongval;
|
|
zulong zulongval;
|
|
char *stringval;
|
|
|
|
if (func == BIN_PRINTF) {
|
|
if (!strcmp(*args, "--") && !*++args) {
|
|
zwarnnam(name, "not enough arguments", NULL, 0);
|
|
return 1;
|
|
}
|
|
fmt = *args++;
|
|
} else if (func == BIN_ECHO && isset(BSDECHO))
|
|
ops->ind['E'] = 1;
|
|
else if (OPT_HASARG(ops,'f'))
|
|
fmt = OPT_ARG(ops,'f');
|
|
if (fmt)
|
|
fmt = getkeystring(fmt, &flen, OPT_ISSET(ops,'b') ? 2 : 0, &nnl);
|
|
|
|
first = args;
|
|
|
|
/* -m option -- treat the first argument as a pattern and remove
|
|
* arguments not matching */
|
|
if (OPT_ISSET(ops,'m')) {
|
|
Patprog pprog;
|
|
char **t, **p;
|
|
|
|
if (!*args) {
|
|
zwarnnam(name, "no pattern specified", NULL, 0);
|
|
return 1;
|
|
}
|
|
tokenize(*args);
|
|
if (!(pprog = patcompile(*args, PAT_STATIC, NULL))) {
|
|
untokenize(*args);
|
|
zwarnnam(name, "bad pattern : %s", *args, 0);
|
|
return 1;
|
|
}
|
|
for (t = p = ++args; *p; p++)
|
|
if (pattry(pprog, *p))
|
|
*t++ = *p;
|
|
*t = NULL;
|
|
first = args;
|
|
if (fmt && !*args) return 0;
|
|
}
|
|
/* compute lengths, and interpret according to -P, -D, -e, etc. */
|
|
argc = arrlen(args);
|
|
len = (int *) hcalloc(argc * sizeof(int));
|
|
for(n = 0; n < argc; n++) {
|
|
/* first \ sequences */
|
|
if (fmt ||
|
|
(!OPT_ISSET(ops,'e') &&
|
|
(OPT_ISSET(ops,'R') || OPT_ISSET(ops,'r') || OPT_ISSET(ops,'E'))))
|
|
unmetafy(args[n], &len[n]);
|
|
else
|
|
args[n] = getkeystring(args[n], &len[n], OPT_ISSET(ops,'b') ? 2 :
|
|
(func != BIN_ECHO && !OPT_ISSET(ops,'e')),
|
|
&nnl);
|
|
/* -P option -- interpret as a prompt sequence */
|
|
if(OPT_ISSET(ops,'P')) {
|
|
/*
|
|
* promptexpand uses permanent storage: to avoid
|
|
* messy memory management, stick it on the heap
|
|
* instead.
|
|
*/
|
|
char *str = unmetafy(promptexpand(metafy(args[n], len[n],
|
|
META_NOALLOC), 0, NULL, NULL), &len[n]);
|
|
args[n] = dupstring(str);
|
|
free(str);
|
|
}
|
|
/* -D option -- interpret as a directory, and use ~ */
|
|
if(OPT_ISSET(ops,'D')) {
|
|
Nameddir d;
|
|
|
|
queue_signals();
|
|
d = finddir(args[n]);
|
|
if(d) {
|
|
char *arg = zhalloc(strlen(args[n]) + 1);
|
|
sprintf(arg, "~%s%s", d->nam,
|
|
args[n] + strlen(d->dir));
|
|
args[n] = arg;
|
|
len[n] = strlen(args[n]);
|
|
}
|
|
unqueue_signals();
|
|
}
|
|
}
|
|
|
|
/* -u and -p -- output to other than standard output */
|
|
if (OPT_HASARG(ops,'u') || OPT_ISSET(ops,'p')) {
|
|
int fd;
|
|
|
|
if (OPT_ISSET(ops, 'p'))
|
|
fd = coprocout;
|
|
else {
|
|
char *argptr = OPT_ARG(ops,'u'), *eptr;
|
|
/* Handle undocumented feature that -up worked */
|
|
if (!strcmp(argptr, "p")) {
|
|
fd = coprocout;
|
|
} else {
|
|
fd = (int)zstrtol(argptr, &eptr, 10);
|
|
if (*eptr) {
|
|
zwarnnam(name, "number expected after -%c: %s", argptr,
|
|
'u');
|
|
return 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
if ((fd = dup(fd)) < 0) {
|
|
zwarnnam(name, "bad file number: %d", NULL, fd);
|
|
return 1;
|
|
}
|
|
if ((fout = fdopen(fd, "w")) == 0) {
|
|
close(fd);
|
|
zwarnnam(name, "bad mode on fd %d", NULL, fd);
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
/* -o and -O -- sort the arguments */
|
|
if (OPT_ISSET(ops,'o')) {
|
|
if (fmt && !*args) return 0;
|
|
if (OPT_ISSET(ops,'i'))
|
|
qsort(args, arrlen(args), sizeof(char *), cstrpcmp);
|
|
else
|
|
qsort(args, arrlen(args), sizeof(char *), strpcmp);
|
|
} else if (OPT_ISSET(ops,'O')) {
|
|
if (fmt && !*args) return 0;
|
|
if (OPT_ISSET(ops,'i'))
|
|
qsort(args, arrlen(args), sizeof(char *), invcstrpcmp);
|
|
else
|
|
qsort(args, arrlen(args), sizeof(char *), invstrpcmp);
|
|
}
|
|
/* after sorting arguments, recalculate lengths */
|
|
if(OPT_ISSET(ops,'o') || OPT_ISSET(ops,'O'))
|
|
for(n = 0; n < argc; n++)
|
|
len[n] = strlen(args[n]);
|
|
|
|
/* -c -- output in columns */
|
|
if (OPT_ISSET(ops,'c') || OPT_ISSET(ops,'C')) {
|
|
int l, nc, nr, sc, n, t, i;
|
|
char **ap;
|
|
|
|
if (OPT_ISSET(ops,'C')) {
|
|
char *eptr, *argptr = OPT_ARG(ops,'C');
|
|
nc = (int)zstrtol(argptr, &eptr, 10);
|
|
if (*eptr) {
|
|
zwarnnam(name, "number expected after -%c: %s", argptr, 'C');
|
|
return 1;
|
|
}
|
|
if (nc <= 0) {
|
|
zwarnnam(name, "invalid number of columns: %s", argptr, 0);
|
|
return 1;
|
|
}
|
|
/*
|
|
* n: number of elements
|
|
* nc: number of columns
|
|
* nr: number of rows
|
|
*/
|
|
n = arrlen(args);
|
|
nr = (n + nc - 1) / nc;
|
|
|
|
/*
|
|
* i: loop counter
|
|
* ap: array iterator
|
|
* l: maximum length seen
|
|
*
|
|
* Ignore lengths in last column since they don't affect
|
|
* the separation.
|
|
*/
|
|
for (i = l = 0, ap = args; *ap; ap++, i++) {
|
|
if (OPT_ISSET(ops, 'a')) {
|
|
if ((i % nc) == nc - 1)
|
|
continue;
|
|
} else {
|
|
if (i >= nr * (nc - 1))
|
|
break;
|
|
}
|
|
if (l < (t = strlen(*ap)))
|
|
l = t;
|
|
}
|
|
sc = l + 2;
|
|
}
|
|
else
|
|
{
|
|
/*
|
|
* n: loop counter
|
|
* ap: array iterator
|
|
* l: maximum length seen
|
|
*/
|
|
for (n = l = 0, ap = args; *ap; ap++, n++)
|
|
if (l < (t = strlen(*ap)))
|
|
l = t;
|
|
|
|
/*
|
|
* sc: column width
|
|
* nc: number of columns (at least one)
|
|
*/
|
|
sc = l + 2;
|
|
nc = (columns + 1) / sc;
|
|
if (!nc)
|
|
nc = 1;
|
|
nr = (n + nc - 1) / nc;
|
|
}
|
|
|
|
if (OPT_ISSET(ops,'a')) /* print across, i.e. columns first */
|
|
ap = args;
|
|
for (i = 0; i < nr; i++) {
|
|
if (OPT_ISSET(ops,'a'))
|
|
{
|
|
int ic;
|
|
for (ic = 0; ic < nc && *ap; ic++, ap++)
|
|
{
|
|
l = strlen(*ap);
|
|
fprintf(fout, "%s", *ap);
|
|
if (*ap)
|
|
for (; l < sc; l++)
|
|
fputc(' ', fout);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
ap = args + i;
|
|
do {
|
|
l = strlen(*ap);
|
|
fprintf(fout, "%s", *ap);
|
|
for (t = nr; t && *ap; t--, ap++);
|
|
if(*ap)
|
|
for (; l < sc; l++)
|
|
fputc(' ', fout);
|
|
} while (*ap);
|
|
}
|
|
fputc(OPT_ISSET(ops,'N') ? '\0' : '\n', fout);
|
|
}
|
|
/* Testing EBADF special-cases >&- redirections */
|
|
if ((fout != stdout) ? (fclose(fout) != 0) :
|
|
(fflush(fout) != 0 && errno != EBADF)) {
|
|
zwarnnam(name, "write error: %e", NULL, errno);
|
|
ret = 1;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/* normal output */
|
|
if (!fmt) {
|
|
/* -z option -- push the arguments onto the editing buffer stack */
|
|
if (OPT_ISSET(ops,'z')) {
|
|
queue_signals();
|
|
zpushnode(bufstack, sepjoin(args, NULL, 0));
|
|
unqueue_signals();
|
|
return 0;
|
|
}
|
|
/* -s option -- add the arguments to the history list */
|
|
if (OPT_ISSET(ops,'s')) {
|
|
int nwords = 0, nlen, iwords;
|
|
char **pargs = args;
|
|
|
|
queue_signals();
|
|
ent = prepnexthistent();
|
|
while (*pargs++)
|
|
nwords++;
|
|
if ((ent->nwords = nwords)) {
|
|
ent->words = (short *)zalloc(nwords*2*sizeof(short));
|
|
nlen = iwords = 0;
|
|
for (pargs = args; *pargs; pargs++) {
|
|
ent->words[iwords++] = nlen;
|
|
nlen += strlen(*pargs);
|
|
ent->words[iwords++] = nlen;
|
|
nlen++;
|
|
}
|
|
} else
|
|
ent->words = (short *)NULL;
|
|
ent->text = zjoin(args, ' ', 0);
|
|
ent->stim = ent->ftim = time(NULL);
|
|
ent->flags = 0;
|
|
addhistnode(histtab, ent->text, ent);
|
|
unqueue_signals();
|
|
return 0;
|
|
}
|
|
|
|
for (; *args; args++, len++) {
|
|
fwrite(*args, *len, 1, fout);
|
|
if (args[1])
|
|
fputc(OPT_ISSET(ops,'l') ? '\n' :
|
|
OPT_ISSET(ops,'N') ? '\0' : ' ', fout);
|
|
}
|
|
if (!(OPT_ISSET(ops,'n') || nnl))
|
|
fputc(OPT_ISSET(ops,'N') ? '\0' : '\n', fout);
|
|
/* Testing EBADF special-cases >&- redirections */
|
|
if ((fout != stdout) ? (fclose(fout) != 0) :
|
|
(fflush(fout) != 0 && errno != EBADF)) {
|
|
zwarnnam(name, "write error: %e", NULL, errno);
|
|
ret = 1;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
if (OPT_ISSET(ops,'z') || OPT_ISSET(ops,'s')) {
|
|
#ifdef HAVE_OPEN_MEMSTREAM
|
|
if ((fout = open_memstream(&buf, &mcount)) == NULL)
|
|
zwarnnam(name, "open_memstream failed", NULL, 0);
|
|
#else
|
|
char *tmpf = gettempname();
|
|
if ((fout = fopen(tmpf, "w+")) == NULL)
|
|
zwarnnam(name, "can't open temp file: %e", NULL, errno);
|
|
unlink(tmpf);
|
|
#endif
|
|
}
|
|
|
|
/* printf style output */
|
|
*spec='%';
|
|
do {
|
|
rcount = count;
|
|
if (maxarg) {
|
|
first += maxarg;
|
|
argc -= maxarg;
|
|
maxarg = 0;
|
|
}
|
|
for (c = fmt;c-fmt < flen;c++) {
|
|
if (*c != '%') {
|
|
putc(*c, fout);
|
|
++count;
|
|
continue;
|
|
}
|
|
|
|
start = c++;
|
|
if (*c == '%') {
|
|
putchar('%');
|
|
++count;
|
|
continue;
|
|
}
|
|
|
|
type = prec = -1;
|
|
width = 0;
|
|
curarg = NULL;
|
|
d = spec + 1;
|
|
|
|
if (*c >= '1' && *c <= '9') {
|
|
narg = strtoul(c, &endptr, 0);
|
|
if (*endptr == '$') {
|
|
c = endptr + 1;
|
|
DPUTS(narg <= 0, "specified zero or negative arg");
|
|
if (narg > argc) {
|
|
zwarnnam(name, "%d: argument specifier out of range",
|
|
0, narg);
|
|
return 1;
|
|
} else {
|
|
if (narg > maxarg) maxarg = narg;
|
|
curarg = *(first + narg - 1);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/* copy only one of each flag as spec has finite size */
|
|
memset(flags, 0, sizeof(flags));
|
|
while ((flag = strchr(flagch, *c))) {
|
|
if (!flags[flag - flagch]) {
|
|
flags[flag - flagch] = 1;
|
|
*d++ = *c;
|
|
}
|
|
c++;
|
|
}
|
|
|
|
if (idigit(*c)) {
|
|
width = strtoul(c, &endptr, 0);
|
|
c = endptr;
|
|
} else if (*c == '*') {
|
|
if (idigit(*++c)) {
|
|
narg = strtoul(c, &endptr, 0);
|
|
if (*endptr == '$') {
|
|
c = endptr + 1;
|
|
if (narg > argc || narg <= 0) {
|
|
zwarnnam(name,
|
|
"%d: argument specifier out of range",
|
|
0, narg);
|
|
return 1;
|
|
} else {
|
|
if (narg > maxarg) maxarg = narg;
|
|
args = first + narg - 1;
|
|
}
|
|
}
|
|
}
|
|
if (*args) {
|
|
width = (int)mathevali(*args++);
|
|
if (errflag) {
|
|
errflag = 0;
|
|
ret = 1;
|
|
}
|
|
}
|
|
}
|
|
*d++ = '*';
|
|
|
|
if (*c == '.') {
|
|
if (*++c == '*') {
|
|
if (idigit(*++c)) {
|
|
narg = strtoul(c, &endptr, 0);
|
|
if (*endptr == '$') {
|
|
c = endptr + 1;
|
|
if (narg > argc || narg <= 0) {
|
|
zwarnnam(name,
|
|
"%d: argument specifier out of range",
|
|
0, narg);
|
|
return 1;
|
|
} else {
|
|
if (narg > maxarg) maxarg = narg;
|
|
args = first + narg - 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (*args) {
|
|
prec = (int)mathevali(*args++);
|
|
if (errflag) {
|
|
errflag = 0;
|
|
ret = 1;
|
|
}
|
|
}
|
|
} else if (idigit(*c)) {
|
|
prec = strtoul(c, &endptr, 0);
|
|
c = endptr;
|
|
}
|
|
if (prec >= 0) *d++ = '.', *d++ = '*';
|
|
}
|
|
|
|
/* ignore any size modifier */
|
|
if (*c == 'l' || *c == 'L' || *c == 'h') c++;
|
|
|
|
if (!curarg && *args) curarg = *args++;
|
|
d[1] = '\0';
|
|
switch (*d = *c) {
|
|
case 'c':
|
|
if (curarg) {
|
|
intval = *curarg;
|
|
} else
|
|
intval = 0;
|
|
print_val(intval);
|
|
break;
|
|
case 's':
|
|
stringval = curarg ? curarg : &nullstr;
|
|
print_val(stringval);
|
|
break;
|
|
case 'b':
|
|
if (curarg) {
|
|
int l;
|
|
char *b = getkeystring(curarg, &l,
|
|
OPT_ISSET(ops,'b') ? 2 : 0, &nnl);
|
|
/* handle width/precision here and use fwrite so that
|
|
* nul characters can be output */
|
|
if (prec >= 0 && prec < l) l = prec;
|
|
if (width > 0 && flags[2]) width = -width;
|
|
if (width > 0 && l < width)
|
|
printf("%*c", width - l, ' ');
|
|
fwrite(b, l, 1, fout);
|
|
if (width < 0 && l < -width)
|
|
printf("%*c", -width - l, ' ');
|
|
count += l;
|
|
}
|
|
break;
|
|
case 'q':
|
|
stringval = curarg ? bslashquote(curarg, NULL, 0) : &nullstr;
|
|
*d = 's';
|
|
print_val(stringval);
|
|
break;
|
|
case 'd':
|
|
case 'i':
|
|
type=1;
|
|
break;
|
|
case 'e':
|
|
case 'E':
|
|
case 'f':
|
|
case 'g':
|
|
case 'G':
|
|
type=2;
|
|
break;
|
|
case 'o':
|
|
case 'u':
|
|
case 'x':
|
|
case 'X':
|
|
type=3;
|
|
break;
|
|
case 'n':
|
|
if (curarg) setiparam(curarg, count - rcount);
|
|
break;
|
|
default:
|
|
if (*c) {
|
|
save = c[1];
|
|
c[1] = '\0';
|
|
}
|
|
zwarnnam(name, "%s: invalid directive", start, 0);
|
|
if (*c) c[1] = save;
|
|
/* Testing EBADF special-cases >&- redirections */
|
|
if ((fout != stdout) ? (fclose(fout) != 0) :
|
|
(fflush(fout) != 0 && errno != EBADF)) {
|
|
zwarnnam(name, "write error: %e", NULL, errno);
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
if (type > 0) {
|
|
if (curarg && (*curarg == '\'' || *curarg == '"' )) {
|
|
if (type == 2) {
|
|
doubleval = (unsigned char)curarg[1];
|
|
print_val(doubleval);
|
|
} else {
|
|
intval = (unsigned char)curarg[1];
|
|
print_val(intval);
|
|
}
|
|
} else {
|
|
switch (type) {
|
|
case 1:
|
|
#ifdef ZSH_64_BIT_TYPE
|
|
*d++ = 'l';
|
|
#endif
|
|
*d++ = 'l', *d++ = *c, *d = '\0';
|
|
zlongval = (curarg) ? mathevali(curarg) : 0;
|
|
if (errflag) {
|
|
zlongval = 0;
|
|
errflag = 0;
|
|
ret = 1;
|
|
}
|
|
print_val(zlongval)
|
|
break;
|
|
case 2:
|
|
if (curarg) {
|
|
mnumval = matheval(curarg);
|
|
doubleval = (mnumval.type & MN_FLOAT) ?
|
|
mnumval.u.d : (double)mnumval.u.l;
|
|
} else doubleval = 0;
|
|
if (errflag) {
|
|
doubleval = 0;
|
|
errflag = 0;
|
|
ret = 1;
|
|
}
|
|
print_val(doubleval)
|
|
break;
|
|
case 3:
|
|
#ifdef ZSH_64_BIT_UTYPE
|
|
*d++ = 'l';
|
|
#endif
|
|
*d++ = 'l', *d++ = *c, *d = '\0';
|
|
zulongval = (curarg) ? mathevali(curarg) : 0;
|
|
if (errflag) {
|
|
zulongval = 0;
|
|
errflag = 0;
|
|
ret = 1;
|
|
}
|
|
print_val(zulongval)
|
|
}
|
|
}
|
|
}
|
|
if (maxarg && (args - first > maxarg))
|
|
maxarg = args - first;
|
|
}
|
|
|
|
if (maxarg) args = first + maxarg;
|
|
/* if there are remaining args, reuse format string */
|
|
} while (*args && args != first && !OPT_ISSET(ops,'r'));
|
|
|
|
if (OPT_ISSET(ops,'z') || OPT_ISSET(ops,'s')) {
|
|
#ifdef HAVE_OPEN_MEMSTREAM
|
|
putc(0, fout);
|
|
fflush(fout);
|
|
count = mcount;
|
|
#else
|
|
rewind(fout);
|
|
buf = (char *)zalloc(count + 1);
|
|
fread(buf, count, 1, fout);
|
|
buf[count] = '\0';
|
|
#endif
|
|
queue_signals();
|
|
if (OPT_ISSET(ops,'z')) {
|
|
zpushnode(bufstack, buf);
|
|
} else {
|
|
ent = prepnexthistent();
|
|
ent->text = buf;
|
|
ent->stim = ent->ftim = time(NULL);
|
|
ent->flags = 0;
|
|
ent->words = (short *)NULL;
|
|
addhistnode(histtab, ent->text, ent);
|
|
}
|
|
unqueue_signals();
|
|
}
|
|
|
|
/* Testing EBADF special-cases >&- redirections */
|
|
if ((fout != stdout) ? (fclose(fout) != 0) :
|
|
(fflush(fout) != 0 && errno != EBADF)) {
|
|
zwarnnam(name, "write error: %e", NULL, errno);
|
|
ret = 1;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/* shift builtin */
|
|
|
|
/**/
|
|
int
|
|
bin_shift(char *name, char **argv, Options ops, int func)
|
|
{
|
|
int num = 1, l, ret = 0;
|
|
char **s;
|
|
|
|
/* optional argument can be either numeric or an array */
|
|
queue_signals();
|
|
if (*argv && !getaparam(*argv))
|
|
num = mathevali(*argv++);
|
|
|
|
if (num < 0) {
|
|
unqueue_signals();
|
|
zwarnnam(name, "argument to shift must be non-negative", NULL, 0);
|
|
return 1;
|
|
}
|
|
|
|
if (*argv) {
|
|
for (; *argv; argv++)
|
|
if ((s = getaparam(*argv))) {
|
|
if (num > arrlen(s)) {
|
|
zwarnnam(name, "shift count must be <= $#", NULL, 0);
|
|
ret++;
|
|
continue;
|
|
}
|
|
s = zarrdup(s + num);
|
|
setaparam(*argv, s);
|
|
}
|
|
} else {
|
|
if (num > (l = arrlen(pparams))) {
|
|
zwarnnam(name, "shift count must be <= $#", NULL, 0);
|
|
ret = 1;
|
|
} else {
|
|
s = zalloc((l - num + 1) * sizeof(char *));
|
|
memcpy(s, pparams + num, (l - num + 1) * sizeof(char *));
|
|
while (num--)
|
|
zsfree(pparams[num]);
|
|
zfree(pparams, (l + 1) * sizeof(char *));
|
|
pparams = s;
|
|
}
|
|
}
|
|
unqueue_signals();
|
|
return ret;
|
|
}
|
|
|
|
/**/
|
|
int optcind;
|
|
|
|
/* getopts: automagical option handling for shell scripts */
|
|
|
|
/**/
|
|
int
|
|
bin_getopts(char *name, char **argv, Options ops, int func)
|
|
{
|
|
int lenstr, lenoptstr, quiet, lenoptbuf;
|
|
char *optstr = unmetafy(*argv++, &lenoptstr), *var = *argv++;
|
|
char **args = (*argv) ? argv : pparams;
|
|
char *str, optbuf[2] = " ", *p, opch;
|
|
|
|
/* zoptind keeps count of the current argument number. The *
|
|
* user can set it to zero to start a new option parse. */
|
|
if (zoptind < 1) {
|
|
/* first call */
|
|
zoptind = 1;
|
|
optcind = 0;
|
|
}
|
|
if(zoptind > arrlen(args))
|
|
/* no more options */
|
|
return 1;
|
|
|
|
/* leading ':' in optstr means don't print an error message */
|
|
quiet = *optstr == ':';
|
|
optstr += quiet;
|
|
lenoptstr -= quiet;
|
|
|
|
/* find place in relevant argument */
|
|
str = unmetafy(dupstring(args[zoptind - 1]), &lenstr);
|
|
if (!lenstr) /* Definitely not an option. */
|
|
return 1;
|
|
if(optcind >= lenstr) {
|
|
optcind = 0;
|
|
if(!args[zoptind++])
|
|
return 1;
|
|
str = unmetafy(dupstring(args[zoptind - 1]), &lenstr);
|
|
}
|
|
if(!optcind) {
|
|
if(lenstr < 2 || (*str != '-' && *str != '+'))
|
|
return 1;
|
|
if(lenstr == 2 && str[0] == '-' && str[1] == '-') {
|
|
zoptind++;
|
|
return 1;
|
|
}
|
|
optcind++;
|
|
}
|
|
opch = str[optcind++];
|
|
if(str[0] == '+') {
|
|
optbuf[0] = '+';
|
|
lenoptbuf = 2;
|
|
} else
|
|
lenoptbuf = 1;
|
|
optbuf[lenoptbuf - 1] = opch;
|
|
|
|
/* check for legality */
|
|
if(opch == ':' || !(p = memchr(optstr, opch, lenoptstr))) {
|
|
p = "?";
|
|
err:
|
|
zsfree(zoptarg);
|
|
setsparam(var, ztrdup(p));
|
|
if(quiet) {
|
|
zoptarg = metafy(optbuf, lenoptbuf, META_DUP);
|
|
} else {
|
|
zwarn(*p == '?' ? "bad option: -%c" :
|
|
"argument expected after -%c option", NULL, opch);
|
|
zoptarg=ztrdup("");
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* check for required argument */
|
|
if(p[1] == ':') {
|
|
if(optcind == lenstr) {
|
|
if(!args[zoptind]) {
|
|
p = ":";
|
|
goto err;
|
|
}
|
|
p = ztrdup(args[zoptind++]);
|
|
} else
|
|
p = metafy(str+optcind, lenstr-optcind, META_DUP);
|
|
/*
|
|
* Careful: I've just changed the following two lines from
|
|
* optcind = ztrlen(args[zoptind - 1]);
|
|
* and it's a rigorous theorem that every change in getopts breaks
|
|
* something. See zsh-workers/9095 for the bug fixed here.
|
|
* PWS 2000/05/02
|
|
*/
|
|
optcind = 0;
|
|
zoptind++;
|
|
zsfree(zoptarg);
|
|
zoptarg = p;
|
|
} else {
|
|
zsfree(zoptarg);
|
|
zoptarg = ztrdup("");
|
|
}
|
|
|
|
setsparam(var, metafy(optbuf, lenoptbuf, META_DUP));
|
|
return 0;
|
|
}
|
|
|
|
/* Flag that we should exit the shell as soon as all functions return. */
|
|
/**/
|
|
int
|
|
exit_pending;
|
|
|
|
/* break, bye, continue, exit, logout, return -- most of these take *
|
|
* one numeric argument, and the other (logout) is related to return. *
|
|
* (return is treated as a logout when in a login shell.) */
|
|
|
|
/**/
|
|
int
|
|
bin_break(char *name, char **argv, Options ops, int func)
|
|
{
|
|
int num = lastval, nump = 0;
|
|
|
|
/* handle one optional numeric argument */
|
|
if (*argv) {
|
|
num = mathevali(*argv++);
|
|
nump = 1;
|
|
}
|
|
|
|
switch (func) {
|
|
case BIN_CONTINUE:
|
|
if (!loops) { /* continue is only permitted in loops */
|
|
zerrnam(name, "not in while, until, select, or repeat loop", NULL, 0);
|
|
return 1;
|
|
}
|
|
contflag = 1; /* ARE WE SUPPOSED TO FALL THROUGH HERE? */
|
|
case BIN_BREAK:
|
|
if (!loops) { /* break is only permitted in loops */
|
|
zerrnam(name, "not in while, until, select, or repeat loop", NULL, 0);
|
|
return 1;
|
|
}
|
|
breaks = nump ? minimum(num,loops) : 1;
|
|
break;
|
|
case BIN_RETURN:
|
|
if (isset(INTERACTIVE) || locallevel || sourcelevel) {
|
|
retflag = 1;
|
|
breaks = loops;
|
|
lastval = num;
|
|
if (trapreturn == -2)
|
|
trapreturn = lastval;
|
|
return lastval;
|
|
}
|
|
zexit(num, 0); /* else treat return as logout/exit */
|
|
break;
|
|
case BIN_LOGOUT:
|
|
if (unset(LOGINSHELL)) {
|
|
zerrnam(name, "not login shell", NULL, 0);
|
|
return 1;
|
|
}
|
|
/*FALLTHROUGH*/
|
|
case BIN_EXIT:
|
|
if (locallevel) {
|
|
/*
|
|
* We don't exit directly from functions to allow tidying
|
|
* up, in particular EXIT traps. We still need to perform
|
|
* the usual interactive tests to see if we can exit at
|
|
* all, however.
|
|
*/
|
|
if (stopmsg || (zexit(0,2), !stopmsg)) {
|
|
retflag = 1;
|
|
breaks = loops;
|
|
exit_pending = (num << 1) | 1;
|
|
}
|
|
} else
|
|
zexit(num, 0);
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* we have printed a 'you have stopped (running) jobs.' message */
|
|
|
|
/**/
|
|
mod_export int stopmsg;
|
|
|
|
/* check to see if user has jobs running/stopped */
|
|
|
|
/**/
|
|
static void
|
|
checkjobs(void)
|
|
{
|
|
int i;
|
|
|
|
for (i = 1; i <= maxjob; i++)
|
|
if (i != thisjob && (jobtab[i].stat & STAT_LOCKED) &&
|
|
!(jobtab[i].stat & STAT_NOPRINT))
|
|
break;
|
|
if (i <= maxjob) {
|
|
if (jobtab[i].stat & STAT_STOPPED) {
|
|
|
|
#ifdef USE_SUSPENDED
|
|
zerr("you have suspended jobs.", NULL, 0);
|
|
#else
|
|
zerr("you have stopped jobs.", NULL, 0);
|
|
#endif
|
|
|
|
} else
|
|
zerr("you have running jobs.", NULL, 0);
|
|
stopmsg = 1;
|
|
}
|
|
}
|
|
|
|
/* exit the shell. val is the return value of the shell. *
|
|
* from_where is
|
|
* 1 if zexit is called because of a signal
|
|
* 2 if we can't actually exit yet (e.g. functions need
|
|
* terminating) but should perform the usual interactive tests.
|
|
*/
|
|
|
|
/**/
|
|
mod_export void
|
|
zexit(int val, int from_where)
|
|
{
|
|
static int in_exit;
|
|
|
|
if (isset(MONITOR) && !stopmsg && from_where != 1) {
|
|
scanjobs(); /* check if jobs need printing */
|
|
if (isset(CHECKJOBS))
|
|
checkjobs(); /* check if any jobs are running/stopped */
|
|
if (stopmsg) {
|
|
stopmsg = 2;
|
|
return;
|
|
}
|
|
}
|
|
if (from_where == 2 || (in_exit++ && from_where))
|
|
return;
|
|
|
|
if (isset(MONITOR)) {
|
|
/* send SIGHUP to any jobs left running */
|
|
killrunjobs(from_where == 1);
|
|
}
|
|
if (isset(RCS) && interact) {
|
|
if (!nohistsave)
|
|
savehistfile(NULL, 1, HFILE_USE_OPTIONS);
|
|
if (islogin && !subsh) {
|
|
sourcehome(".zlogout");
|
|
#ifdef GLOBAL_ZLOGOUT
|
|
if (isset(RCS) && isset(GLOBALRCS))
|
|
source(GLOBAL_ZLOGOUT);
|
|
#endif
|
|
}
|
|
}
|
|
if (sigtrapped[SIGEXIT])
|
|
dotrap(SIGEXIT);
|
|
runhookdef(EXITHOOK, NULL);
|
|
if (mypid != getpid())
|
|
_exit(val);
|
|
else
|
|
exit(val);
|
|
}
|
|
|
|
/* . (dot), source */
|
|
|
|
/**/
|
|
int
|
|
bin_dot(char *name, char **argv, Options ops, int func)
|
|
{
|
|
char **old, *old0 = NULL;
|
|
int ret, diddot = 0, dotdot = 0;
|
|
char *s, **t, *enam, *arg0, *buf;
|
|
struct stat st;
|
|
|
|
if (!*argv)
|
|
return 0;
|
|
old = pparams;
|
|
/* get arguments for the script */
|
|
if (argv[1])
|
|
pparams = zarrdup(argv + 1);
|
|
|
|
enam = arg0 = ztrdup(*argv);
|
|
if (isset(FUNCTIONARGZERO)) {
|
|
old0 = argzero;
|
|
argzero = arg0;
|
|
}
|
|
s = unmeta(enam);
|
|
errno = ENOENT;
|
|
ret = 1;
|
|
/* for source only, check in current directory first */
|
|
if (*name != '.' && access(s, F_OK) == 0
|
|
&& stat(s, &st) >= 0 && !S_ISDIR(st.st_mode)) {
|
|
diddot = 1;
|
|
ret = source(enam);
|
|
}
|
|
if (ret) {
|
|
/* use a path with / in it */
|
|
for (s = arg0; *s; s++)
|
|
if (*s == '/') {
|
|
if (*arg0 == '.') {
|
|
if (arg0 + 1 == s)
|
|
++diddot;
|
|
else if (arg0[1] == '.' && arg0 + 2 == s)
|
|
++dotdot;
|
|
}
|
|
ret = source(arg0);
|
|
break;
|
|
}
|
|
if (!*s || (ret && isset(PATHDIRS) && diddot < 2 && dotdot == 0)) {
|
|
pushheap();
|
|
/* search path for script */
|
|
for (t = path; *t; t++) {
|
|
if (!(*t)[0] || ((*t)[0] == '.' && !(*t)[1])) {
|
|
if (diddot)
|
|
continue;
|
|
diddot = 1;
|
|
buf = dupstring(arg0);
|
|
} else
|
|
buf = zhtricat(*t, "/", arg0);
|
|
|
|
s = unmeta(buf);
|
|
if (access(s, F_OK) == 0 && stat(s, &st) >= 0
|
|
&& !S_ISDIR(st.st_mode)) {
|
|
ret = source(enam = buf);
|
|
break;
|
|
}
|
|
}
|
|
popheap();
|
|
}
|
|
}
|
|
/* clean up and return */
|
|
if (argv[1]) {
|
|
freearray(pparams);
|
|
pparams = old;
|
|
}
|
|
if (ret)
|
|
zwarnnam(name, "%e: %s", enam, errno);
|
|
zsfree(arg0);
|
|
if (old0)
|
|
argzero = old0;
|
|
return ret ? ret : lastval;
|
|
}
|
|
|
|
/**/
|
|
int
|
|
bin_emulate(char *nam, char **argv, Options ops, int func)
|
|
{
|
|
emulate(*argv, OPT_ISSET(ops,'R'));
|
|
if (OPT_ISSET(ops,'L'))
|
|
opts[LOCALOPTIONS] = opts[LOCALTRAPS] = 1;
|
|
return 0;
|
|
}
|
|
|
|
/* eval: simple evaluation */
|
|
|
|
/**/
|
|
int
|
|
bin_eval(char *nam, char **argv, Options ops, int func)
|
|
{
|
|
Eprog prog;
|
|
char *oscriptname = scriptname;
|
|
|
|
scriptname = "(eval)";
|
|
|
|
prog = parse_string(zjoin(argv, ' ', 1));
|
|
if (!prog) {
|
|
errflag = 0;
|
|
return 1;
|
|
}
|
|
lastval = 0;
|
|
execode(prog, 1, 0);
|
|
if (errflag) {
|
|
lastval = errflag;
|
|
errflag = 0;
|
|
}
|
|
|
|
scriptname = oscriptname;
|
|
|
|
return lastval;
|
|
}
|
|
|
|
static char *zbuf;
|
|
static int readfd;
|
|
|
|
/* Read a character from readfd, or from the buffer zbuf. Return EOF on end of
|
|
file/buffer. */
|
|
|
|
/* read: get a line of input, or (for compctl functions) return some *
|
|
* useful data about the state of the editing line. The -E and -e *
|
|
* options mean that the result should be sent to stdout. -e means, *
|
|
* in addition, that the result should not actually be assigned to *
|
|
* the specified parameters. */
|
|
|
|
/**/
|
|
int
|
|
bin_read(char *name, char **args, Options ops, int func)
|
|
{
|
|
char *reply, *readpmpt;
|
|
int bsiz, c = 0, gotnl = 0, al = 0, first, nchars = 1, bslash, keys = 0;
|
|
int haso = 0; /* true if /dev/tty has been opened specially */
|
|
int isem = !strcmp(term, "emacs"), izle = zleactive && getkeyptr;
|
|
char *buf, *bptr, *firstarg, *zbuforig;
|
|
LinkList readll = newlinklist();
|
|
FILE *oshout = NULL;
|
|
int readchar = -1, val, resettty = 0;
|
|
struct ttyinfo saveti;
|
|
char d;
|
|
char delim = '\n';
|
|
|
|
if (OPT_HASARG(ops,c='k')) {
|
|
char *eptr, *optarg = OPT_ARG(ops,c);
|
|
nchars = (int)zstrtol(optarg, &eptr, 10);
|
|
if (*eptr) {
|
|
zwarnnam(name, "number expected after -%c: %s", optarg, c);
|
|
return 1;
|
|
}
|
|
}
|
|
/* This `*args++ : *args' looks a bit weird, but it works around a bug
|
|
* in gcc-2.8.1 under DU 4.0. */
|
|
firstarg = (*args && **args == '?' ? *args++ : *args);
|
|
reply = *args ? *args++ : OPT_ISSET(ops,'A') ? "reply" : "REPLY";
|
|
|
|
if (OPT_ISSET(ops,'A') && *args) {
|
|
zwarnnam(name, "only one array argument allowed", NULL, 0);
|
|
return 1;
|
|
}
|
|
|
|
/* handle compctl case */
|
|
if(OPT_ISSET(ops,'l') || OPT_ISSET(ops,'c'))
|
|
return compctlread(name, args, ops, reply);
|
|
|
|
if ((OPT_ISSET(ops,'k') && !OPT_ISSET(ops,'u') &&
|
|
!OPT_ISSET(ops,'p')) || OPT_ISSET(ops,'q')) {
|
|
if (!zleactive) {
|
|
if (SHTTY == -1) {
|
|
/* need to open /dev/tty specially */
|
|
if ((SHTTY = open("/dev/tty", O_RDWR|O_NOCTTY)) != -1) {
|
|
haso = 1;
|
|
oshout = shout;
|
|
init_shout();
|
|
}
|
|
} else if (!shout) {
|
|
/* We need an output FILE* on the tty */
|
|
init_shout();
|
|
}
|
|
/* We should have a SHTTY opened by now. */
|
|
if (SHTTY == -1) {
|
|
/* Unfortunately, we didn't. */
|
|
fprintf(stderr, "not interactive and can't open terminal\n");
|
|
fflush(stderr);
|
|
return 1;
|
|
}
|
|
if (unset(INTERACTIVE))
|
|
gettyinfo(&shttyinfo);
|
|
/* attach to the tty */
|
|
attachtty(mypgrp);
|
|
if (!isem && OPT_ISSET(ops,'k'))
|
|
setcbreak();
|
|
readfd = SHTTY;
|
|
}
|
|
keys = 1;
|
|
} else if (OPT_HASARG(ops,'u') && !OPT_ISSET(ops,'p')) {
|
|
/* -u means take input from the specified file descriptor. */
|
|
char *eptr, *argptr = OPT_ARG(ops,'u');
|
|
/* The old code handled -up, but that was never documented. Still...*/
|
|
if (!strcmp(argptr, "p")) {
|
|
readfd = coprocin;
|
|
} else {
|
|
readfd = (int)zstrtol(argptr, &eptr, 10);
|
|
if (*eptr) {
|
|
zwarnnam(name, "number expected after -%c: %s", argptr, 'u');
|
|
return 1;
|
|
}
|
|
}
|
|
#if 0
|
|
/* This code is left as a warning to future generations --- pws. */
|
|
for (readfd = 9; readfd && !OPT_ISSET(ops,readfd + '0'); --readfd);
|
|
#endif
|
|
izle = 0;
|
|
} else if (OPT_ISSET(ops,'p')) {
|
|
readfd = coprocin;
|
|
izle = 0;
|
|
} else
|
|
readfd = izle = 0;
|
|
|
|
if (OPT_ISSET(ops,'t')) {
|
|
zlong timeout = 0;
|
|
if (OPT_HASARG(ops,'t')) {
|
|
mnumber mn = zero_mnumber;
|
|
mn = matheval(OPT_ARG(ops,'t'));
|
|
if (errflag)
|
|
return 1;
|
|
if (mn.type == MN_FLOAT) {
|
|
mn.u.d *= 1e6;
|
|
timeout = (zlong)mn.u.d;
|
|
} else {
|
|
timeout = (zlong)mn.u.l * (zlong)1000000;
|
|
}
|
|
}
|
|
if (readfd == -1 ||
|
|
!read_poll(readfd, &readchar, keys && !zleactive, timeout)) {
|
|
if (OPT_ISSET(ops,'k') && !zleactive && !isem)
|
|
settyinfo(&shttyinfo);
|
|
if (haso) {
|
|
fclose(shout);
|
|
shout = oshout;
|
|
SHTTY = -1;
|
|
}
|
|
return 1;
|
|
}
|
|
}
|
|
if (OPT_ISSET(ops,'d')) {
|
|
char *delimstr = OPT_ARG(ops,'d');
|
|
delim = (delimstr[0] == Meta) ? delimstr[1] ^ 32 : delimstr[0];
|
|
if (SHTTY != -1) {
|
|
struct ttyinfo ti;
|
|
gettyinfo(&ti);
|
|
saveti = ti;
|
|
resettty = 1;
|
|
#ifdef HAS_TIO
|
|
ti.tio.c_lflag &= ~ICANON;
|
|
ti.tio.c_cc[VMIN] = 1;
|
|
ti.tio.c_cc[VTIME] = 0;
|
|
#else
|
|
ti.sgttyb.sg_flags |= CBREAK;
|
|
#endif
|
|
settyinfo(&ti);
|
|
}
|
|
}
|
|
if (OPT_ISSET(ops,'s') && SHTTY != -1) {
|
|
struct ttyinfo ti;
|
|
gettyinfo(&ti);
|
|
if (! resettty) {
|
|
saveti = ti;
|
|
resettty = 1;
|
|
}
|
|
#ifdef HAS_TIO
|
|
ti.tio.c_lflag &= ~ECHO;
|
|
#else
|
|
ti.sgttyb.sg_flags &= ~ECHO;
|
|
#endif
|
|
settyinfo(&ti);
|
|
}
|
|
|
|
/* handle prompt */
|
|
if (firstarg) {
|
|
for (readpmpt = firstarg;
|
|
*readpmpt && *readpmpt != '?'; readpmpt++);
|
|
if (*readpmpt++) {
|
|
if (keys || isatty(0)) {
|
|
zputs(readpmpt, (shout ? shout : stderr));
|
|
fflush(shout ? shout : stderr);
|
|
}
|
|
readpmpt[-1] = '\0';
|
|
}
|
|
}
|
|
|
|
/* option -k means read only a given number of characters (default 1) */
|
|
if (OPT_ISSET(ops,'k')) {
|
|
/* allocate buffer space for result */
|
|
bptr = buf = (char *)zalloc(nchars+1);
|
|
|
|
do {
|
|
if (izle) {
|
|
if ((val = getkeyptr(0)) < 0)
|
|
break;
|
|
*bptr++ = (char) val;
|
|
nchars--;
|
|
} else {
|
|
/* If read returns 0, is end of file */
|
|
if (readchar >= 0) {
|
|
*bptr = readchar;
|
|
val = 1;
|
|
readchar = -1;
|
|
} else if ((val = read(readfd, bptr, nchars)) <= 0)
|
|
break;
|
|
|
|
/* decrement number of characters read from number required */
|
|
nchars -= val;
|
|
|
|
/* increment pointer past read characters */
|
|
bptr += val;
|
|
}
|
|
} while (nchars > 0);
|
|
|
|
if (!izle && !OPT_ISSET(ops,'u') && !OPT_ISSET(ops,'p')) {
|
|
/* dispose of result appropriately, etc. */
|
|
if (isem)
|
|
while (val > 0 && read(SHTTY, &d, 1) == 1 && d != '\n');
|
|
else {
|
|
settyinfo(&shttyinfo);
|
|
resettty = 0;
|
|
}
|
|
if (haso) {
|
|
fclose(shout); /* close(SHTTY) */
|
|
shout = oshout;
|
|
SHTTY = -1;
|
|
}
|
|
}
|
|
|
|
if (OPT_ISSET(ops,'e') || OPT_ISSET(ops,'E'))
|
|
fwrite(buf, bptr - buf, 1, stdout);
|
|
if (!OPT_ISSET(ops,'e'))
|
|
setsparam(reply, metafy(buf, bptr - buf, META_REALLOC));
|
|
else
|
|
zfree(buf, bptr - buf + 1);
|
|
if (resettty && SHTTY != -1)
|
|
settyinfo(&saveti);
|
|
return val <= 0;
|
|
}
|
|
|
|
/* option -q means get one character, and interpret it as a Y or N */
|
|
if (OPT_ISSET(ops,'q')) {
|
|
char readbuf[2];
|
|
|
|
/* set up the buffer */
|
|
readbuf[1] = '\0';
|
|
|
|
/* get, and store, reply */
|
|
if (izle) {
|
|
int key = getkeyptr(0);
|
|
|
|
readbuf[0] = (key == 'y' ? 'y' : 'n');
|
|
} else {
|
|
readbuf[0] = ((char)getquery(NULL, 0)) == 'y' ? 'y' : 'n';
|
|
|
|
/* dispose of result appropriately, etc. */
|
|
if (haso) {
|
|
fclose(shout); /* close(SHTTY) */
|
|
shout = oshout;
|
|
SHTTY = -1;
|
|
}
|
|
}
|
|
if (OPT_ISSET(ops,'e') || OPT_ISSET(ops,'E'))
|
|
printf("%s\n", readbuf);
|
|
if (!OPT_ISSET(ops,'e'))
|
|
setsparam(reply, ztrdup(readbuf));
|
|
|
|
if (resettty && SHTTY != -1)
|
|
settyinfo(&saveti);
|
|
return readbuf[0] == 'n';
|
|
}
|
|
|
|
/* All possible special types of input have been exhausted. Take one line,
|
|
and assign words to the parameters until they run out. Leftover words go
|
|
onto the last parameter. If an array is specified, all the words become
|
|
separate elements of the array. */
|
|
|
|
zbuforig = zbuf = (!OPT_ISSET(ops,'z')) ? NULL :
|
|
(nonempty(bufstack)) ? (char *) getlinknode(bufstack) : ztrdup("");
|
|
first = 1;
|
|
bslash = 0;
|
|
while (*args || (OPT_ISSET(ops,'A') && !gotnl)) {
|
|
sigset_t s = child_unblock();
|
|
buf = bptr = (char *)zalloc(bsiz = 64);
|
|
/* get input, a character at a time */
|
|
while (!gotnl) {
|
|
c = zread(izle, &readchar);
|
|
/* \ at the end of a line indicates a continuation *
|
|
* line, except in raw mode (-r option) */
|
|
if (bslash && c == delim) {
|
|
bslash = 0;
|
|
continue;
|
|
}
|
|
if (c == EOF || c == delim)
|
|
break;
|
|
/*
|
|
* `first' is non-zero if any separator we encounter is a
|
|
* non-whitespace separator, which means that anything
|
|
* (even an empty string) between, before or after separators
|
|
* is significant. If it is zero, we have a whitespace
|
|
* separator, which shouldn't cause extra empty strings to
|
|
* be emitted. Hence the test for (*buf || first) when
|
|
* we assign the result of reading a word.
|
|
*/
|
|
if (!bslash && isep(c)) {
|
|
if (bptr != buf || (!iwsep(c) && first)) {
|
|
first |= !iwsep(c);
|
|
break;
|
|
}
|
|
first |= !iwsep(c);
|
|
continue;
|
|
}
|
|
bslash = c == '\\' && !bslash && !OPT_ISSET(ops,'r');
|
|
if (bslash)
|
|
continue;
|
|
first = 0;
|
|
if (imeta(c)) {
|
|
*bptr++ = Meta;
|
|
*bptr++ = c ^ 32;
|
|
} else
|
|
*bptr++ = c;
|
|
/* increase the buffer size, if necessary */
|
|
if (bptr >= buf + bsiz - 1) {
|
|
int blen = bptr - buf;
|
|
|
|
buf = realloc(buf, bsiz *= 2);
|
|
bptr = buf + blen;
|
|
}
|
|
}
|
|
signal_setmask(s);
|
|
if (c == delim || c == EOF)
|
|
gotnl = 1;
|
|
*bptr = '\0';
|
|
/* dispose of word appropriately */
|
|
if (OPT_ISSET(ops,'e') || OPT_ISSET(ops,'E')) {
|
|
zputs(buf, stdout);
|
|
putchar('\n');
|
|
}
|
|
if (!OPT_ISSET(ops,'e') && (*buf || first)) {
|
|
if (OPT_ISSET(ops,'A')) {
|
|
addlinknode(readll, buf);
|
|
al++;
|
|
} else
|
|
setsparam(reply, buf);
|
|
} else
|
|
free(buf);
|
|
if (!OPT_ISSET(ops,'A'))
|
|
reply = *args++;
|
|
}
|
|
/* handle EOF */
|
|
if (c == EOF) {
|
|
if (readfd == coprocin) {
|
|
close(coprocin);
|
|
close(coprocout);
|
|
coprocin = coprocout = -1;
|
|
}
|
|
}
|
|
/* final assignment (and display) of array parameter */
|
|
if (OPT_ISSET(ops,'A')) {
|
|
char **pp, **p = NULL;
|
|
LinkNode n;
|
|
|
|
p = (OPT_ISSET(ops,'e') ? (char **)NULL
|
|
: (char **)zalloc((al + 1) * sizeof(char *)));
|
|
|
|
for (pp = p, n = firstnode(readll); n; incnode(n)) {
|
|
if (OPT_ISSET(ops,'e') || OPT_ISSET(ops,'E')) {
|
|
zputs((char *) getdata(n), stdout);
|
|
putchar('\n');
|
|
}
|
|
if (p)
|
|
*pp++ = (char *)getdata(n);
|
|
else
|
|
zsfree(getdata(n));
|
|
}
|
|
if (p) {
|
|
*pp++ = NULL;
|
|
setaparam(reply, p);
|
|
}
|
|
if (resettty && SHTTY != -1)
|
|
settyinfo(&saveti);
|
|
return c == EOF;
|
|
}
|
|
buf = bptr = (char *)zalloc(bsiz = 64);
|
|
/* any remaining part of the line goes into one parameter */
|
|
bslash = 0;
|
|
if (!gotnl) {
|
|
sigset_t s = child_unblock();
|
|
for (;;) {
|
|
c = zread(izle, &readchar);
|
|
/* \ at the end of a line introduces a continuation line, except in
|
|
raw mode (-r option) */
|
|
if (bslash && c == delim) {
|
|
bslash = 0;
|
|
continue;
|
|
}
|
|
if (c == EOF || (c == delim && !zbuf))
|
|
break;
|
|
if (!bslash && isep(c) && bptr == buf) {
|
|
if (iwsep(c))
|
|
continue;
|
|
else if (!first) {
|
|
first = 1;
|
|
continue;
|
|
}
|
|
}
|
|
bslash = c == '\\' && !bslash && !OPT_ISSET(ops,'r');
|
|
if (bslash)
|
|
continue;
|
|
if (imeta(c)) {
|
|
*bptr++ = Meta;
|
|
*bptr++ = c ^ 32;
|
|
} else
|
|
*bptr++ = c;
|
|
/* increase the buffer size, if necessary */
|
|
if (bptr >= buf + bsiz - 1) {
|
|
int blen = bptr - buf;
|
|
|
|
buf = realloc(buf, bsiz *= 2);
|
|
bptr = buf + blen;
|
|
}
|
|
}
|
|
signal_setmask(s);
|
|
}
|
|
while (bptr > buf && iwsep(bptr[-1]))
|
|
bptr--;
|
|
*bptr = '\0';
|
|
if (resettty && SHTTY != -1)
|
|
settyinfo(&saveti);
|
|
/* final assignment of reply, etc. */
|
|
if (OPT_ISSET(ops,'e') || OPT_ISSET(ops,'E')) {
|
|
zputs(buf, stdout);
|
|
putchar('\n');
|
|
}
|
|
if (!OPT_ISSET(ops,'e'))
|
|
setsparam(reply, buf);
|
|
else
|
|
zsfree(buf);
|
|
if (zbuforig) {
|
|
char first = *zbuforig;
|
|
|
|
zsfree(zbuforig);
|
|
if (!first)
|
|
return 1;
|
|
} else if (c == EOF) {
|
|
if (readfd == coprocin) {
|
|
close(coprocin);
|
|
close(coprocout);
|
|
coprocin = coprocout = -1;
|
|
}
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**/
|
|
static int
|
|
zread(int izle, int *readchar)
|
|
{
|
|
char cc, retry = 0;
|
|
int ret;
|
|
|
|
if (izle) {
|
|
int c = getkeyptr(0);
|
|
|
|
return (c < 0 ? EOF : c);
|
|
}
|
|
/* use zbuf if possible */
|
|
if (zbuf) {
|
|
/* If zbuf points to anything, it points to the next character in the
|
|
buffer. This may be a null byte to indicate EOF. If reading from the
|
|
buffer, move on the buffer pointer. */
|
|
if (*zbuf == Meta)
|
|
return zbuf++, STOUC(*zbuf++ ^ 32);
|
|
else
|
|
return (*zbuf) ? STOUC(*zbuf++) : EOF;
|
|
}
|
|
if (*readchar >= 0) {
|
|
cc = *readchar;
|
|
*readchar = -1;
|
|
return STOUC(cc);
|
|
}
|
|
for (;;) {
|
|
/* read a character from readfd */
|
|
ret = read(readfd, &cc, 1);
|
|
switch (ret) {
|
|
case 1:
|
|
/* return the character read */
|
|
return STOUC(cc);
|
|
case -1:
|
|
#if defined(EAGAIN) || defined(EWOULDBLOCK)
|
|
if (!retry && readfd == 0 && (
|
|
# ifdef EAGAIN
|
|
errno == EAGAIN
|
|
# ifdef EWOULDBLOCK
|
|
||
|
|
# endif /* EWOULDBLOCK */
|
|
# endif /* EAGAIN */
|
|
# ifdef EWOULDBLOCK
|
|
errno == EWOULDBLOCK
|
|
# endif /* EWOULDBLOCK */
|
|
) && setblock_stdin()) {
|
|
retry = 1;
|
|
continue;
|
|
} else
|
|
#endif /* EAGAIN || EWOULDBLOCK */
|
|
if (errno == EINTR && !(errflag || retflag || breaks || contflag))
|
|
continue;
|
|
break;
|
|
}
|
|
return EOF;
|
|
}
|
|
}
|
|
|
|
/* holds arguments for testlex() */
|
|
/**/
|
|
char **testargs;
|
|
|
|
/* test, [: the old-style general purpose logical expression builtin */
|
|
|
|
/**/
|
|
void
|
|
testlex(void)
|
|
{
|
|
if (tok == LEXERR)
|
|
return;
|
|
|
|
tokstr = *testargs;
|
|
if (!*testargs) {
|
|
/* if tok is already zero, reading past the end: error */
|
|
tok = tok ? NULLTOK : LEXERR;
|
|
return;
|
|
} else if (!strcmp(*testargs, "-o"))
|
|
tok = DBAR;
|
|
else if (!strcmp(*testargs, "-a"))
|
|
tok = DAMPER;
|
|
else if (!strcmp(*testargs, "!"))
|
|
tok = BANG;
|
|
else if (!strcmp(*testargs, "("))
|
|
tok = INPAR;
|
|
else if (!strcmp(*testargs, ")"))
|
|
tok = OUTPAR;
|
|
else
|
|
tok = STRING;
|
|
testargs++;
|
|
}
|
|
|
|
/**/
|
|
int
|
|
bin_test(char *name, char **argv, Options ops, int func)
|
|
{
|
|
char **s;
|
|
Eprog prog;
|
|
struct estate state;
|
|
|
|
/* if "test" was invoked as "[", it needs a matching "]" *
|
|
* which is subsequently ignored */
|
|
if (func == BIN_BRACKET) {
|
|
for (s = argv; *s; s++);
|
|
if (s == argv || strcmp(s[-1], "]")) {
|
|
zwarnnam(name, "']' expected", NULL, 0);
|
|
return 1;
|
|
}
|
|
s[-1] = NULL;
|
|
}
|
|
/* an empty argument list evaluates to false (1) */
|
|
if (!*argv)
|
|
return 1;
|
|
|
|
testargs = argv;
|
|
tok = NULLTOK;
|
|
condlex = testlex;
|
|
testlex();
|
|
prog = parse_cond();
|
|
condlex = yylex;
|
|
|
|
if (errflag) {
|
|
errflag = 0;
|
|
return 1;
|
|
}
|
|
|
|
if (!prog || tok == LEXERR) {
|
|
zwarnnam(name, tokstr ? "parse error" : "argument expected", NULL, 0);
|
|
return 1;
|
|
}
|
|
|
|
/* syntax is OK, so evaluate */
|
|
|
|
state.prog = prog;
|
|
state.pc = prog->prog;
|
|
state.strs = prog->strs;
|
|
|
|
|
|
return !evalcond(&state);
|
|
}
|
|
|
|
/* display a time, provided in units of 1/60s, as minutes and seconds */
|
|
#define pttime(X) printf("%ldm%ld.%02lds",((long) (X))/3600,\
|
|
((long) (X))/60%60,((long) (X))*100/60%100)
|
|
|
|
/* times: display, in a two-line format, the times provided by times(3) */
|
|
|
|
/**/
|
|
int
|
|
bin_times(char *name, char **argv, Options ops, int func)
|
|
{
|
|
struct tms buf;
|
|
|
|
/* get time accounting information */
|
|
if (times(&buf) == -1)
|
|
return 1;
|
|
pttime(buf.tms_utime); /* user time */
|
|
putchar(' ');
|
|
pttime(buf.tms_stime); /* system time */
|
|
putchar('\n');
|
|
pttime(buf.tms_cutime); /* user time, children */
|
|
putchar(' ');
|
|
pttime(buf.tms_cstime); /* system time, children */
|
|
putchar('\n');
|
|
return 0;
|
|
}
|
|
|
|
/* trap: set/unset signal traps */
|
|
|
|
/**/
|
|
int
|
|
bin_trap(char *name, char **argv, Options ops, int func)
|
|
{
|
|
Eprog prog;
|
|
char *arg, *s;
|
|
int sig;
|
|
|
|
if (*argv && !strcmp(*argv, "--"))
|
|
argv++;
|
|
|
|
/* If given no arguments, list all currently-set traps */
|
|
if (!*argv) {
|
|
queue_signals();
|
|
for (sig = 0; sig < VSIGCOUNT; sig++) {
|
|
if (sigtrapped[sig] & ZSIG_FUNC) {
|
|
char fname[20];
|
|
HashNode hn;
|
|
|
|
sprintf(fname, "TRAP%s", sigs[sig]);
|
|
if ((hn = shfunctab->getnode(shfunctab, fname)))
|
|
shfunctab->printnode(hn, 0);
|
|
DPUTS(!hn, "BUG: I did not find any trap functions!");
|
|
} else if (sigtrapped[sig]) {
|
|
if (!sigfuncs[sig])
|
|
printf("trap -- '' %s\n", sigs[sig]);
|
|
else {
|
|
s = getpermtext(sigfuncs[sig], NULL);
|
|
printf("trap -- ");
|
|
quotedzputs(s, stdout);
|
|
printf(" %s\n", sigs[sig]);
|
|
zsfree(s);
|
|
}
|
|
}
|
|
}
|
|
unqueue_signals();
|
|
return 0;
|
|
}
|
|
|
|
/* If we have a signal number, unset the specified *
|
|
* signals. With only -, remove all traps. */
|
|
if ((getsignum(*argv) != -1) || (!strcmp(*argv, "-") && argv++)) {
|
|
if (!*argv)
|
|
for (sig = 0; sig < VSIGCOUNT; sig++)
|
|
unsettrap(sig);
|
|
else
|
|
while (*argv)
|
|
unsettrap(getsignum(*argv++));
|
|
return 0;
|
|
}
|
|
|
|
/* Sort out the command to execute on trap */
|
|
arg = *argv++;
|
|
if (!*arg)
|
|
prog = &dummy_eprog;
|
|
else if (!(prog = parse_string(arg))) {
|
|
zwarnnam(name, "couldn't parse trap command", NULL, 0);
|
|
return 1;
|
|
}
|
|
|
|
/* set traps */
|
|
for (; *argv; argv++) {
|
|
Eprog t;
|
|
|
|
sig = getsignum(*argv);
|
|
if (sig == -1) {
|
|
zwarnnam(name, "undefined signal: %s", *argv, 0);
|
|
break;
|
|
}
|
|
t = dupeprog(prog, 0);
|
|
if (settrap(sig, t))
|
|
freeeprog(t);
|
|
}
|
|
return *argv != NULL;
|
|
}
|
|
|
|
/**/
|
|
int
|
|
bin_ttyctl(char *name, char **argv, Options ops, int func)
|
|
{
|
|
if (OPT_ISSET(ops,'f'))
|
|
ttyfrozen = 1;
|
|
else if (OPT_ISSET(ops,'u'))
|
|
ttyfrozen = 0;
|
|
else
|
|
printf("tty is %sfrozen\n", ttyfrozen ? "" : "not ");
|
|
return 0;
|
|
}
|
|
|
|
/* let -- mathematical evaluation */
|
|
|
|
/**/
|
|
int
|
|
bin_let(char *name, char **argv, Options ops, int func)
|
|
{
|
|
mnumber val = zero_mnumber;
|
|
|
|
while (*argv)
|
|
val = matheval(*argv++);
|
|
/* Errors in math evaluation in let are non-fatal. */
|
|
errflag = 0;
|
|
/* should test for fabs(val.u.d) < epsilon? */
|
|
return (val.type == MN_INTEGER) ? val.u.l == 0 : val.u.d == 0.0;
|
|
}
|
|
|
|
/* umask command. umask may be specified as octal digits, or in the *
|
|
* symbolic form that chmod(1) uses. Well, a subset of it. Remember *
|
|
* that only the bottom nine bits of umask are used, so there's no *
|
|
* point allowing the set{u,g}id and sticky bits to be specified. */
|
|
|
|
/**/
|
|
int
|
|
bin_umask(char *nam, char **args, Options ops, int func)
|
|
{
|
|
mode_t um;
|
|
char *s = *args;
|
|
|
|
/* Get the current umask. */
|
|
um = umask(0);
|
|
umask(um);
|
|
/* No arguments means to display the current setting. */
|
|
if (!s) {
|
|
if (OPT_ISSET(ops,'S')) {
|
|
char *who = "ugo";
|
|
|
|
while (*who) {
|
|
char *what = "rwx";
|
|
printf("%c=", *who++);
|
|
while (*what) {
|
|
if (!(um & 0400))
|
|
putchar(*what);
|
|
um <<= 1;
|
|
what++;
|
|
}
|
|
putchar(*who ? ',' : '\n');
|
|
}
|
|
} else {
|
|
if (um & 0700)
|
|
putchar('0');
|
|
printf("%03o\n", (unsigned)um);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
if (idigit(*s)) {
|
|
/* Simple digital umask. */
|
|
um = zstrtol(s, &s, 8);
|
|
if (*s) {
|
|
zwarnnam(nam, "bad umask", NULL, 0);
|
|
return 1;
|
|
}
|
|
} else {
|
|
/* Symbolic notation -- slightly complicated. */
|
|
int whomask, umaskop, mask;
|
|
|
|
/* More than one symbolic argument may be used at once, each separated
|
|
by commas. */
|
|
for (;;) {
|
|
/* First part of the argument -- who does this apply to?
|
|
u=owner, g=group, o=other. */
|
|
whomask = 0;
|
|
while (*s == 'u' || *s == 'g' || *s == 'o' || *s == 'a')
|
|
if (*s == 'u')
|
|
s++, whomask |= 0700;
|
|
else if (*s == 'g')
|
|
s++, whomask |= 0070;
|
|
else if (*s == 'o')
|
|
s++, whomask |= 0007;
|
|
else if (*s == 'a')
|
|
s++, whomask |= 0777;
|
|
/* Default whomask is everyone. */
|
|
if (!whomask)
|
|
whomask = 0777;
|
|
/* Operation may be +, - or =. */
|
|
umaskop = (int)*s;
|
|
if (!(umaskop == '+' || umaskop == '-' || umaskop == '=')) {
|
|
if (umaskop)
|
|
zwarnnam(nam, "bad symbolic mode operator: %c", NULL, umaskop);
|
|
else
|
|
zwarnnam(nam, "bad umask", NULL, 0);
|
|
return 1;
|
|
}
|
|
/* Permissions mask -- r=read, w=write, x=execute. */
|
|
mask = 0;
|
|
while (*++s && *s != ',')
|
|
if (*s == 'r')
|
|
mask |= 0444 & whomask;
|
|
else if (*s == 'w')
|
|
mask |= 0222 & whomask;
|
|
else if (*s == 'x')
|
|
mask |= 0111 & whomask;
|
|
else {
|
|
zwarnnam(nam, "bad symbolic mode permission: %c",
|
|
NULL, *s);
|
|
return 1;
|
|
}
|
|
/* Apply parsed argument to um. */
|
|
if (umaskop == '+')
|
|
um &= ~mask;
|
|
else if (umaskop == '-')
|
|
um |= mask;
|
|
else /* umaskop == '=' */
|
|
um = (um | (whomask)) & ~mask;
|
|
if (*s == ',')
|
|
s++;
|
|
else
|
|
break;
|
|
}
|
|
if (*s) {
|
|
zwarnnam(nam, "bad character in symbolic mode: %c", NULL, *s);
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
/* Finally, set the new umask. */
|
|
umask(um);
|
|
return 0;
|
|
}
|
|
|
|
/* Generic builtin for facilities not available on this OS */
|
|
|
|
/**/
|
|
mod_export int
|
|
bin_notavail(char *nam, char **argv, Options ops, int func)
|
|
{
|
|
zwarnnam(nam, "not available on this system", NULL, 0);
|
|
return 1;
|
|
}
|