mirror of
https://github.com/git/git.git
synced 2024-06-01 18:16:08 +02:00
e90fdc39b6
The old version of work-tree support was an unholy mess, barely readable, and not to the point. For example, why do you have to provide a worktree, when it is not used? As in "git status". Now it works. Another riddle was: if you can have work trees inside the git dir, why are some programs complaining that they need a work tree? IOW it is allowed to call $ git --git-dir=../ --work-tree=. bla when you really want to. In this case, you are both in the git directory and in the working tree. So, programs have to actually test for the right thing, namely if they are inside a working tree, and not if they are inside a git directory. Also, GIT_DIR=../.git should behave the same as if no GIT_DIR was specified, unless there is a repository in the current working directory. It does now. The logic to determine if a repository is bare, or has a work tree (tertium non datur), is this: --work-tree=bla overrides GIT_WORK_TREE, which overrides core.bare = true, which overrides core.worktree, which overrides GIT_DIR/.. when GIT_DIR ends in /.git, which overrides the directory in which .git/ was found. In related news, a long standing bug was fixed: when in .git/bla/x.git/, which is a bare repository, git formerly assumed ../.. to be the appropriate git dir. This problem was reported by Shawn Pearce to have caused much pain, where a colleague mistakenly ran "git init" in "/" a long time ago, and bare repositories just would not work. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
529 lines
12 KiB
C
529 lines
12 KiB
C
/*
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* This merges the file listing in the directory cache index
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* with the actual working directory list, and shows different
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* combinations of the two.
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*
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* Copyright (C) Linus Torvalds, 2005
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*/
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#include "cache.h"
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#include "quote.h"
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#include "dir.h"
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#include "builtin.h"
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static int abbrev;
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static int show_deleted;
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static int show_cached;
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static int show_others;
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static int show_stage;
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static int show_unmerged;
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static int show_modified;
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static int show_killed;
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static int show_valid_bit;
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static int line_terminator = '\n';
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static int prefix_len;
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static int prefix_offset;
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static const char **pathspec;
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static int error_unmatch;
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static char *ps_matched;
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static const char *tag_cached = "";
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static const char *tag_unmerged = "";
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static const char *tag_removed = "";
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static const char *tag_other = "";
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static const char *tag_killed = "";
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static const char *tag_modified = "";
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/*
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* Match a pathspec against a filename. The first "len" characters
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* are the common prefix
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*/
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static int match(const char **spec, char *ps_matched,
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const char *filename, int len)
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{
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const char *m;
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while ((m = *spec++) != NULL) {
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int matchlen = strlen(m + len);
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if (!matchlen)
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goto matched;
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if (!strncmp(m + len, filename + len, matchlen)) {
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if (m[len + matchlen - 1] == '/')
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goto matched;
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switch (filename[len + matchlen]) {
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case '/': case '\0':
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goto matched;
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}
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}
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if (!fnmatch(m + len, filename + len, 0))
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goto matched;
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if (ps_matched)
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ps_matched++;
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continue;
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matched:
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if (ps_matched)
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*ps_matched = 1;
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return 1;
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}
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return 0;
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}
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static void show_dir_entry(const char *tag, struct dir_entry *ent)
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{
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int len = prefix_len;
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int offset = prefix_offset;
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if (len >= ent->len)
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die("git-ls-files: internal error - directory entry not superset of prefix");
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if (pathspec && !match(pathspec, ps_matched, ent->name, len))
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return;
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fputs(tag, stdout);
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write_name_quoted("", 0, ent->name + offset, line_terminator, stdout);
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putchar(line_terminator);
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}
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static void show_other_files(struct dir_struct *dir)
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{
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int i;
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/*
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* Skip matching and unmerged entries for the paths,
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* since we want just "others".
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*
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* (Matching entries are normally pruned during
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* the directory tree walk, but will show up for
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* gitlinks because we don't necessarily have
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* dir->show_other_directories set to suppress
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* them).
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*/
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for (i = 0; i < dir->nr; i++) {
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struct dir_entry *ent = dir->entries[i];
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int len, pos;
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struct cache_entry *ce;
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/*
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* Remove the '/' at the end that directory
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* walking adds for directory entries.
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*/
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len = ent->len;
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if (len && ent->name[len-1] == '/')
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len--;
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pos = cache_name_pos(ent->name, len);
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if (0 <= pos)
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continue; /* exact match */
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pos = -pos - 1;
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if (pos < active_nr) {
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ce = active_cache[pos];
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if (ce_namelen(ce) == len &&
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!memcmp(ce->name, ent->name, len))
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continue; /* Yup, this one exists unmerged */
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}
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show_dir_entry(tag_other, ent);
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}
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}
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static void show_killed_files(struct dir_struct *dir)
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{
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int i;
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for (i = 0; i < dir->nr; i++) {
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struct dir_entry *ent = dir->entries[i];
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char *cp, *sp;
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int pos, len, killed = 0;
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for (cp = ent->name; cp - ent->name < ent->len; cp = sp + 1) {
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sp = strchr(cp, '/');
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if (!sp) {
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/* If ent->name is prefix of an entry in the
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* cache, it will be killed.
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*/
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pos = cache_name_pos(ent->name, ent->len);
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if (0 <= pos)
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die("bug in show-killed-files");
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pos = -pos - 1;
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while (pos < active_nr &&
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ce_stage(active_cache[pos]))
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pos++; /* skip unmerged */
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if (active_nr <= pos)
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break;
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/* pos points at a name immediately after
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* ent->name in the cache. Does it expect
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* ent->name to be a directory?
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*/
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len = ce_namelen(active_cache[pos]);
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if ((ent->len < len) &&
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!strncmp(active_cache[pos]->name,
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ent->name, ent->len) &&
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active_cache[pos]->name[ent->len] == '/')
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killed = 1;
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break;
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}
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if (0 <= cache_name_pos(ent->name, sp - ent->name)) {
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/* If any of the leading directories in
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* ent->name is registered in the cache,
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* ent->name will be killed.
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*/
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killed = 1;
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break;
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}
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}
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if (killed)
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show_dir_entry(tag_killed, dir->entries[i]);
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}
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}
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static void show_ce_entry(const char *tag, struct cache_entry *ce)
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{
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int len = prefix_len;
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int offset = prefix_offset;
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if (len >= ce_namelen(ce))
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die("git-ls-files: internal error - cache entry not superset of prefix");
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if (pathspec && !match(pathspec, ps_matched, ce->name, len))
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return;
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if (tag && *tag && show_valid_bit &&
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(ce->ce_flags & htons(CE_VALID))) {
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static char alttag[4];
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memcpy(alttag, tag, 3);
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if (isalpha(tag[0]))
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alttag[0] = tolower(tag[0]);
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else if (tag[0] == '?')
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alttag[0] = '!';
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else {
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alttag[0] = 'v';
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alttag[1] = tag[0];
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alttag[2] = ' ';
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alttag[3] = 0;
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}
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tag = alttag;
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}
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if (!show_stage) {
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fputs(tag, stdout);
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write_name_quoted("", 0, ce->name + offset,
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line_terminator, stdout);
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putchar(line_terminator);
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}
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else {
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printf("%s%06o %s %d\t",
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tag,
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ntohl(ce->ce_mode),
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abbrev ? find_unique_abbrev(ce->sha1,abbrev)
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: sha1_to_hex(ce->sha1),
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ce_stage(ce));
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write_name_quoted("", 0, ce->name + offset,
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line_terminator, stdout);
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putchar(line_terminator);
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}
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}
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static void show_files(struct dir_struct *dir, const char *prefix)
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{
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int i;
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/* For cached/deleted files we don't need to even do the readdir */
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if (show_others || show_killed) {
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const char *path = ".", *base = "";
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int baselen = prefix_len;
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if (baselen)
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path = base = prefix;
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read_directory(dir, path, base, baselen, pathspec);
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if (show_others)
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show_other_files(dir);
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if (show_killed)
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show_killed_files(dir);
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}
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if (show_cached | show_stage) {
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for (i = 0; i < active_nr; i++) {
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struct cache_entry *ce = active_cache[i];
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if (excluded(dir, ce->name) != dir->show_ignored)
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continue;
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if (show_unmerged && !ce_stage(ce))
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continue;
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show_ce_entry(ce_stage(ce) ? tag_unmerged : tag_cached, ce);
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}
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}
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if (show_deleted | show_modified) {
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for (i = 0; i < active_nr; i++) {
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struct cache_entry *ce = active_cache[i];
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struct stat st;
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int err;
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if (excluded(dir, ce->name) != dir->show_ignored)
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continue;
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err = lstat(ce->name, &st);
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if (show_deleted && err)
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show_ce_entry(tag_removed, ce);
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if (show_modified && ce_modified(ce, &st, 0))
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show_ce_entry(tag_modified, ce);
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}
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}
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}
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/*
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* Prune the index to only contain stuff starting with "prefix"
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*/
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static void prune_cache(const char *prefix)
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{
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int pos = cache_name_pos(prefix, prefix_len);
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unsigned int first, last;
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if (pos < 0)
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pos = -pos-1;
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active_cache += pos;
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active_nr -= pos;
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first = 0;
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last = active_nr;
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while (last > first) {
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int next = (last + first) >> 1;
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struct cache_entry *ce = active_cache[next];
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if (!strncmp(ce->name, prefix, prefix_len)) {
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first = next+1;
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continue;
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}
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last = next;
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}
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active_nr = last;
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}
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static const char *verify_pathspec(const char *prefix)
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{
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const char **p, *n, *prev;
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char *real_prefix;
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unsigned long max;
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prev = NULL;
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max = PATH_MAX;
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for (p = pathspec; (n = *p) != NULL; p++) {
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int i, len = 0;
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for (i = 0; i < max; i++) {
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char c = n[i];
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if (prev && prev[i] != c)
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break;
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if (!c || c == '*' || c == '?')
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break;
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if (c == '/')
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len = i+1;
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}
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prev = n;
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if (len < max) {
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max = len;
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if (!max)
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break;
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}
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}
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if (prefix_offset > max || memcmp(prev, prefix, prefix_offset))
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die("git-ls-files: cannot generate relative filenames containing '..'");
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real_prefix = NULL;
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prefix_len = max;
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if (max) {
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real_prefix = xmalloc(max + 1);
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memcpy(real_prefix, prev, max);
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real_prefix[max] = 0;
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}
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return real_prefix;
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}
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static const char ls_files_usage[] =
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"git-ls-files [-z] [-t] [-v] (--[cached|deleted|others|stage|unmerged|killed|modified])* "
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"[ --ignored ] [--exclude=<pattern>] [--exclude-from=<file>] "
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"[ --exclude-per-directory=<filename> ] [--full-name] [--abbrev] "
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"[--] [<file>]*";
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int cmd_ls_files(int argc, const char **argv, const char *prefix)
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{
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int i;
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int exc_given = 0, require_work_tree = 0;
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struct dir_struct dir;
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memset(&dir, 0, sizeof(dir));
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if (prefix)
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prefix_offset = strlen(prefix);
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git_config(git_default_config);
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for (i = 1; i < argc; i++) {
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const char *arg = argv[i];
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if (!strcmp(arg, "--")) {
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i++;
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break;
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}
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if (!strcmp(arg, "-z")) {
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line_terminator = 0;
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continue;
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}
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if (!strcmp(arg, "-t") || !strcmp(arg, "-v")) {
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tag_cached = "H ";
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tag_unmerged = "M ";
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tag_removed = "R ";
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tag_modified = "C ";
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tag_other = "? ";
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tag_killed = "K ";
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if (arg[1] == 'v')
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show_valid_bit = 1;
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continue;
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}
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if (!strcmp(arg, "-c") || !strcmp(arg, "--cached")) {
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show_cached = 1;
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continue;
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}
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if (!strcmp(arg, "-d") || !strcmp(arg, "--deleted")) {
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show_deleted = 1;
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continue;
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}
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if (!strcmp(arg, "-m") || !strcmp(arg, "--modified")) {
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show_modified = 1;
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require_work_tree = 1;
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continue;
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}
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if (!strcmp(arg, "-o") || !strcmp(arg, "--others")) {
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show_others = 1;
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require_work_tree = 1;
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continue;
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}
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if (!strcmp(arg, "-i") || !strcmp(arg, "--ignored")) {
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dir.show_ignored = 1;
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require_work_tree = 1;
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continue;
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}
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if (!strcmp(arg, "-s") || !strcmp(arg, "--stage")) {
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show_stage = 1;
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continue;
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}
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if (!strcmp(arg, "-k") || !strcmp(arg, "--killed")) {
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show_killed = 1;
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require_work_tree = 1;
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continue;
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}
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if (!strcmp(arg, "--directory")) {
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dir.show_other_directories = 1;
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continue;
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}
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if (!strcmp(arg, "--no-empty-directory")) {
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dir.hide_empty_directories = 1;
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continue;
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}
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if (!strcmp(arg, "-u") || !strcmp(arg, "--unmerged")) {
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/* There's no point in showing unmerged unless
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* you also show the stage information.
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*/
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show_stage = 1;
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show_unmerged = 1;
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continue;
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}
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if (!strcmp(arg, "-x") && i+1 < argc) {
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exc_given = 1;
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add_exclude(argv[++i], "", 0, &dir.exclude_list[EXC_CMDL]);
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continue;
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}
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if (!prefixcmp(arg, "--exclude=")) {
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exc_given = 1;
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add_exclude(arg+10, "", 0, &dir.exclude_list[EXC_CMDL]);
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continue;
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}
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if (!strcmp(arg, "-X") && i+1 < argc) {
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exc_given = 1;
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add_excludes_from_file(&dir, argv[++i]);
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continue;
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}
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if (!prefixcmp(arg, "--exclude-from=")) {
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exc_given = 1;
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add_excludes_from_file(&dir, arg+15);
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continue;
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}
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if (!prefixcmp(arg, "--exclude-per-directory=")) {
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exc_given = 1;
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dir.exclude_per_dir = arg + 24;
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continue;
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}
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if (!strcmp(arg, "--full-name")) {
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prefix_offset = 0;
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continue;
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}
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if (!strcmp(arg, "--error-unmatch")) {
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error_unmatch = 1;
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continue;
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}
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if (!prefixcmp(arg, "--abbrev=")) {
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abbrev = strtoul(arg+9, NULL, 10);
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if (abbrev && abbrev < MINIMUM_ABBREV)
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abbrev = MINIMUM_ABBREV;
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else if (abbrev > 40)
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abbrev = 40;
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continue;
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}
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if (!strcmp(arg, "--abbrev")) {
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abbrev = DEFAULT_ABBREV;
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continue;
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}
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if (*arg == '-')
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usage(ls_files_usage);
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break;
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}
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if (require_work_tree && !is_inside_work_tree()) {
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const char *work_tree = get_git_work_tree();
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if (!work_tree || chdir(work_tree))
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die("This operation must be run in a work tree");
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}
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pathspec = get_pathspec(prefix, argv + i);
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/* Verify that the pathspec matches the prefix */
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if (pathspec)
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prefix = verify_pathspec(prefix);
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/* Treat unmatching pathspec elements as errors */
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if (pathspec && error_unmatch) {
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int num;
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for (num = 0; pathspec[num]; num++)
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;
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ps_matched = xcalloc(1, num);
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}
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if (dir.show_ignored && !exc_given) {
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fprintf(stderr, "%s: --ignored needs some exclude pattern\n",
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argv[0]);
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exit(1);
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}
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/* With no flags, we default to showing the cached files */
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if (!(show_stage | show_deleted | show_others | show_unmerged |
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show_killed | show_modified))
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show_cached = 1;
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read_cache();
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if (prefix)
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prune_cache(prefix);
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show_files(&dir, prefix);
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if (ps_matched) {
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/* We need to make sure all pathspec matched otherwise
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* it is an error.
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*/
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int num, errors = 0;
|
|
for (num = 0; pathspec[num]; num++) {
|
|
if (ps_matched[num])
|
|
continue;
|
|
error("pathspec '%s' did not match any file(s) known to git.",
|
|
pathspec[num] + prefix_offset);
|
|
errors++;
|
|
}
|
|
|
|
if (errors)
|
|
fprintf(stderr, "Did you forget to 'git add'?\n");
|
|
|
|
return errors ? 1 : 0;
|
|
}
|
|
|
|
return 0;
|
|
}
|