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292 lines
7.3 KiB
292 lines
7.3 KiB
/* |
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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 <fnmatch.h> |
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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 "path-list.h" |
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static const char builtin_mv_usage[] = |
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"git-mv [-n] [-f] (<source> <destination> | [-k] <source>... <destination>)"; |
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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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if (length > 0 && result[i][length - 1] == '/') { |
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char *without_slash = xmalloc(length); |
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memcpy(without_slash, result[i], length - 1); |
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without_slash[length - 1] = '\0'; |
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result[i] = without_slash; |
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} |
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if (base_name) { |
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const char *last_slash = strrchr(result[i], '/'); |
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if (last_slash) |
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result[i] = last_slash + 1; |
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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 void show_list(const char *label, struct path_list *list) |
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{ |
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if (list->nr > 0) { |
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int i; |
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printf("%s", label); |
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for (i = 0; i < list->nr; i++) |
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printf("%s%s", i > 0 ? ", " : "", list->items[i].path); |
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putchar('\n'); |
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} |
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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, count; |
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int verbose = 0, show_only = 0, force = 0, ignore_errors = 0; |
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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 path_list overwritten = {NULL, 0, 0, 0}; |
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struct path_list src_for_dst = {NULL, 0, 0, 0}; |
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struct path_list added = {NULL, 0, 0, 0}; |
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struct path_list deleted = {NULL, 0, 0, 0}; |
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struct path_list changed = {NULL, 0, 0, 0}; |
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git_config(git_default_config); |
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newfd = hold_lock_file_for_update(&lock_file, get_index_file(), 1); |
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if (read_cache() < 0) |
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die("index file corrupt"); |
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for (i = 1; i < argc; i++) { |
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const char *arg = argv[i]; |
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if (arg[0] != '-') |
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break; |
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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, "-n")) { |
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show_only = 1; |
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continue; |
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} |
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if (!strcmp(arg, "-f")) { |
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force = 1; |
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continue; |
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} |
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if (!strcmp(arg, "-k")) { |
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ignore_errors = 1; |
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continue; |
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} |
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usage(builtin_mv_usage); |
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} |
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count = argc - i - 1; |
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if (count < 1) |
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usage(builtin_mv_usage); |
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source = copy_pathspec(prefix, argv + i, count, 0); |
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modes = xcalloc(count, sizeof(enum update_mode)); |
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dest_path = copy_pathspec(prefix, argv + argc - 1, 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 + i, count, 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 + i, count, 1); |
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} else { |
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if (count != 1) |
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usage(builtin_mv_usage); |
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destination = dest_path; |
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} |
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/* Checking */ |
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for (i = 0; i < count; 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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int first, last; |
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modes[i] = WORKING_DIRECTORY; |
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first = cache_name_pos(src, length); |
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if (first >= 0) |
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die ("Huh? %s/ is in index?", src); |
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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, length) |
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|| path[length] != '/') |
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break; |
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} |
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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 = realloc(source, |
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(count + last - first) |
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* sizeof(char *)); |
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destination = realloc(destination, |
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(count + last - first) |
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* sizeof(char *)); |
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modes = realloc(modes, |
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(count + 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) - 1; |
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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[count + j] = path; |
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destination[count + j] = |
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prefix_path(dst, dst_len, |
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path + length); |
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modes[count + j] = INDEX; |
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} |
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count += last - first; |
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} |
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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)) { |
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fprintf(stderr, "Warning: %s;" |
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" will overwrite!\n", |
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bad); |
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bad = NULL; |
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path_list_insert(dst, &overwritten); |
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} else |
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bad = "Cannot overwrite"; |
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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 (path_list_has_path(&src_for_dst, dst)) |
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bad = "multiple sources for the same target"; |
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else |
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path_list_insert(dst, &src_for_dst); |
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if (bad) { |
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if (ignore_errors) { |
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if (--count > 0) { |
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memmove(source + i, source + i + 1, |
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(count - i) * sizeof(char *)); |
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memmove(destination + i, |
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destination + i + 1, |
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(count - i) * sizeof(char *)); |
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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 < count; 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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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 ("renaming %s failed: %s", src, strerror(errno)); |
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if (mode == WORKING_DIRECTORY) |
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continue; |
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if (cache_name_pos(src, strlen(src)) >= 0) { |
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path_list_insert(src, &deleted); |
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/* destination can be a directory with 1 file inside */ |
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if (path_list_has_path(&overwritten, dst)) |
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path_list_insert(dst, &changed); |
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else |
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path_list_insert(dst, &added); |
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} else |
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path_list_insert(dst, &added); |
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} |
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if (show_only) { |
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show_list("Changed : ", &changed); |
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show_list("Adding : ", &added); |
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show_list("Deleting : ", &deleted); |
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} else { |
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for (i = 0; i < changed.nr; i++) { |
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const char *path = changed.items[i].path; |
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int i = cache_name_pos(path, strlen(path)); |
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struct cache_entry *ce = active_cache[i]; |
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if (i < 0) |
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die ("Huh? Cache entry for %s unknown?", path); |
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refresh_cache_entry(ce, 0); |
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} |
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for (i = 0; i < added.nr; i++) { |
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const char *path = added.items[i].path; |
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add_file_to_index(path, verbose); |
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} |
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for (i = 0; i < deleted.nr; i++) { |
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const char *path = deleted.items[i].path; |
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remove_file_from_cache(path); |
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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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close(newfd) || |
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commit_lock_file(&lock_file)) |
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die("Unable to write new index file"); |
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} |
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} |
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return 0; |
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}
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