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cd40b05d13
When we try to "git mv" over an existing file, the error message is fairly informative: $ git mv one two fatal: destination exists, source=one, destination=two When the user forces the overwrite, we give a warning: $ git mv -f one two warning: destination exists; will overwrite! This is less informative, but still sufficient in the simple rename case, as there is only one rename happening. But when moving files from one directory to another, it becomes useless: $ mkdir three $ touch one two three/one $ git add . $ git mv one two three fatal: destination exists, source=one, destination=three/one $ git mv -f one two three warning: destination exists; will overwrite! The first message is helpful, but the second one gives us no clue about what was overwritten. Let's mention the name of the destination file: $ git mv -f one two three warning: overwriting 'three/one' Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
229 lines
6.0 KiB
C
229 lines
6.0 KiB
C
/*
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* "git mv" builtin command
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*
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* Copyright (C) 2006 Johannes Schindelin
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*/
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#include "cache.h"
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#include "builtin.h"
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#include "dir.h"
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#include "cache-tree.h"
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#include "string-list.h"
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#include "parse-options.h"
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static const char * const builtin_mv_usage[] = {
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"git mv [options] <source>... <destination>",
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NULL
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};
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static const char **copy_pathspec(const char *prefix, const char **pathspec,
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int count, int base_name)
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{
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int i;
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const char **result = xmalloc((count + 1) * sizeof(const char *));
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memcpy(result, pathspec, count * sizeof(const char *));
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result[count] = NULL;
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for (i = 0; i < count; i++) {
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int length = strlen(result[i]);
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int to_copy = length;
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while (to_copy > 0 && is_dir_sep(result[i][to_copy - 1]))
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to_copy--;
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if (to_copy != length || base_name) {
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char *it = xmemdupz(result[i], to_copy);
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result[i] = base_name ? strdup(basename(it)) : it;
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}
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}
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return get_pathspec(prefix, result);
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}
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static const char *add_slash(const char *path)
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{
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int len = strlen(path);
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if (path[len - 1] != '/') {
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char *with_slash = xmalloc(len + 2);
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memcpy(with_slash, path, len);
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with_slash[len++] = '/';
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with_slash[len] = 0;
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return with_slash;
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}
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return path;
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}
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static struct lock_file lock_file;
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int cmd_mv(int argc, const char **argv, const char *prefix)
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{
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int i, newfd;
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int verbose = 0, show_only = 0, force = 0, ignore_errors = 0;
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struct option builtin_mv_options[] = {
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OPT__VERBOSE(&verbose, "be verbose"),
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OPT__DRY_RUN(&show_only, "dry run"),
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OPT__FORCE(&force, "force move/rename even if target exists"),
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OPT_BOOLEAN('k', NULL, &ignore_errors, "skip move/rename errors"),
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OPT_END(),
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};
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const char **source, **destination, **dest_path;
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enum update_mode { BOTH = 0, WORKING_DIRECTORY, INDEX } *modes;
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struct stat st;
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struct string_list src_for_dst = STRING_LIST_INIT_NODUP;
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git_config(git_default_config, NULL);
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argc = parse_options(argc, argv, prefix, builtin_mv_options,
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builtin_mv_usage, 0);
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if (--argc < 1)
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usage_with_options(builtin_mv_usage, builtin_mv_options);
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newfd = hold_locked_index(&lock_file, 1);
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if (read_cache() < 0)
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die(_("index file corrupt"));
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source = copy_pathspec(prefix, argv, argc, 0);
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modes = xcalloc(argc, sizeof(enum update_mode));
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dest_path = copy_pathspec(prefix, argv + argc, 1, 0);
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if (dest_path[0][0] == '\0')
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/* special case: "." was normalized to "" */
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destination = copy_pathspec(dest_path[0], argv, argc, 1);
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else if (!lstat(dest_path[0], &st) &&
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S_ISDIR(st.st_mode)) {
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dest_path[0] = add_slash(dest_path[0]);
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destination = copy_pathspec(dest_path[0], argv, argc, 1);
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} else {
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if (argc != 1)
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die("destination '%s' is not a directory", dest_path[0]);
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destination = dest_path;
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}
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/* Checking */
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for (i = 0; i < argc; i++) {
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const char *src = source[i], *dst = destination[i];
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int length, src_is_dir;
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const char *bad = NULL;
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if (show_only)
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printf(_("Checking rename of '%s' to '%s'\n"), src, dst);
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length = strlen(src);
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if (lstat(src, &st) < 0)
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bad = _("bad source");
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else if (!strncmp(src, dst, length) &&
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(dst[length] == 0 || dst[length] == '/')) {
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bad = _("can not move directory into itself");
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} else if ((src_is_dir = S_ISDIR(st.st_mode))
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&& lstat(dst, &st) == 0)
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bad = _("cannot move directory over file");
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else if (src_is_dir) {
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const char *src_w_slash = add_slash(src);
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int len_w_slash = length + 1;
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int first, last;
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modes[i] = WORKING_DIRECTORY;
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first = cache_name_pos(src_w_slash, len_w_slash);
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if (first >= 0)
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die (_("Huh? %.*s is in index?"),
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len_w_slash, src_w_slash);
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first = -1 - first;
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for (last = first; last < active_nr; last++) {
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const char *path = active_cache[last]->name;
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if (strncmp(path, src_w_slash, len_w_slash))
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break;
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}
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free((char *)src_w_slash);
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if (last - first < 1)
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bad = _("source directory is empty");
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else {
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int j, dst_len;
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if (last - first > 0) {
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source = xrealloc(source,
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(argc + last - first)
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* sizeof(char *));
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destination = xrealloc(destination,
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(argc + last - first)
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* sizeof(char *));
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modes = xrealloc(modes,
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(argc + last - first)
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* sizeof(enum update_mode));
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}
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dst = add_slash(dst);
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dst_len = strlen(dst);
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for (j = 0; j < last - first; j++) {
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const char *path =
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active_cache[first + j]->name;
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source[argc + j] = path;
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destination[argc + j] =
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prefix_path(dst, dst_len,
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path + length + 1);
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modes[argc + j] = INDEX;
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}
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argc += last - first;
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}
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} else if (cache_name_pos(src, length) < 0)
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bad = _("not under version control");
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else if (lstat(dst, &st) == 0) {
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bad = _("destination exists");
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if (force) {
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/*
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* only files can overwrite each other:
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* check both source and destination
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*/
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if (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode)) {
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warning(_("overwriting '%s'"), dst);
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bad = NULL;
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} else
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bad = _("Cannot overwrite");
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}
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} else if (string_list_has_string(&src_for_dst, dst))
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bad = _("multiple sources for the same target");
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else
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string_list_insert(&src_for_dst, dst);
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if (bad) {
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if (ignore_errors) {
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if (--argc > 0) {
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memmove(source + i, source + i + 1,
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(argc - i) * sizeof(char *));
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memmove(destination + i,
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destination + i + 1,
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(argc - i) * sizeof(char *));
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i--;
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}
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} else
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die (_("%s, source=%s, destination=%s"),
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bad, src, dst);
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}
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}
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for (i = 0; i < argc; i++) {
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const char *src = source[i], *dst = destination[i];
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enum update_mode mode = modes[i];
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int pos;
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if (show_only || verbose)
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printf(_("Renaming %s to %s\n"), src, dst);
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if (!show_only && mode != INDEX &&
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rename(src, dst) < 0 && !ignore_errors)
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die_errno (_("renaming '%s' failed"), src);
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if (mode == WORKING_DIRECTORY)
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continue;
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pos = cache_name_pos(src, strlen(src));
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assert(pos >= 0);
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if (!show_only)
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rename_cache_entry_at(pos, dst);
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}
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if (active_cache_changed) {
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if (write_cache(newfd, active_cache, active_nr) ||
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commit_locked_index(&lock_file))
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die(_("Unable to write new index file"));
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}
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return 0;
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}
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