diff options
Diffstat (limited to 'builtin-mv.c')
| -rw-r--r-- | builtin-mv.c | 297 |
1 files changed, 297 insertions, 0 deletions
diff --git a/builtin-mv.c b/builtin-mv.c new file mode 100644 index 0000000000..62ae937cb1 --- /dev/null +++ b/builtin-mv.c @@ -0,0 +1,297 @@ +/* + * "git mv" builtin command + * + * Copyright (C) 2006 Johannes Schindelin + */ +#include <fnmatch.h> + +#include "cache.h" +#include "builtin.h" +#include "dir.h" +#include "cache-tree.h" +#include "path-list.h" + +static const char builtin_mv_usage[] = +"git-mv [-n] [-f] (<source> <destination> | [-k] <source>... <destination>)"; + +static const char **copy_pathspec(const char *prefix, const char **pathspec, + int count, int base_name) +{ + const char **result = xmalloc((count + 1) * sizeof(const char *)); + memcpy(result, pathspec, count * sizeof(const char *)); + result[count] = NULL; + if (base_name) { + int i; + for (i = 0; i < count; i++) { + const char *last_slash = strrchr(result[i], '/'); + if (last_slash) + result[i] = last_slash + 1; + } + } + return get_pathspec(prefix, result); +} + +static void show_list(const char *label, struct path_list *list) +{ + if (list->nr > 0) { + int i; + printf("%s", label); + for (i = 0; i < list->nr; i++) + printf("%s%s", i > 0 ? ", " : "", list->items[i].path); + putchar('\n'); + } +} + +static const char *add_slash(const char *path) +{ + int len = strlen(path); + if (path[len - 1] != '/') { + char *with_slash = xmalloc(len + 2); + memcpy(with_slash, path, len); + strcat(with_slash + len, "/"); + return with_slash; + } + return path; +} + +static struct lock_file lock_file; + +int cmd_mv(int argc, const char **argv, const char *prefix) +{ + int i, newfd, count; + int verbose = 0, show_only = 0, force = 0, ignore_errors = 0; + const char **source, **destination, **dest_path; + enum update_mode { BOTH = 0, WORKING_DIRECTORY, INDEX } *modes; + struct stat st; + struct path_list overwritten = {NULL, 0, 0, 0}; + struct path_list src_for_dst = {NULL, 0, 0, 0}; + struct path_list added = {NULL, 0, 0, 0}; + struct path_list deleted = {NULL, 0, 0, 0}; + struct path_list changed = {NULL, 0, 0, 0}; + + git_config(git_default_config); + + newfd = hold_lock_file_for_update(&lock_file, get_index_file()); + if (newfd < 0) + die("unable to create new index file"); + + if (read_cache() < 0) + die("index file corrupt"); + + for (i = 1; i < argc; i++) { + const char *arg = argv[i]; + + if (arg[0] != '-') + break; + if (!strcmp(arg, "--")) { + i++; + break; + } + if (!strcmp(arg, "-n")) { + show_only = 1; + continue; + } + if (!strcmp(arg, "-f")) { + force = 1; + continue; + } + if (!strcmp(arg, "-k")) { + ignore_errors = 1; + continue; + } + die(builtin_mv_usage); + } + count = argc - i - 1; + if (count < 1) + usage(builtin_mv_usage); + + source = copy_pathspec(prefix, argv + i, count, 0); + modes = xcalloc(count, sizeof(enum update_mode)); + dest_path = copy_pathspec(prefix, argv + argc - 1, 1, 0); + + if (!lstat(dest_path[0], &st) && + S_ISDIR(st.st_mode)) { + dest_path[0] = add_slash(dest_path[0]); + destination = copy_pathspec(dest_path[0], argv + i, count, 1); + } else { + if (count != 1) + usage(builtin_mv_usage); + destination = dest_path; + } + + /* Checking */ + for (i = 0; i < count; i++) { + const char *bad = NULL; + + if (show_only) + printf("Checking rename of '%s' to '%s'\n", + source[i], destination[i]); + + if (lstat(source[i], &st) < 0) + bad = "bad source"; + + if (S_ISDIR(st.st_mode)) { + const char *dir = source[i], *dest_dir = destination[i]; + int first, last, len = strlen(dir); + + if (lstat(dest_dir, &st) == 0) { + bad = "cannot move directory over file"; + goto next; + } + + modes[i] = WORKING_DIRECTORY; + + first = cache_name_pos(source[i], len); + if (first >= 0) + die ("Huh? %s/ is in index?", dir); + + first = -1 - first; + for (last = first; last < active_nr; last++) { + const char *path = active_cache[last]->name; + if (strncmp(path, dir, len) || path[len] != '/') + break; + } + + if (last - first < 1) + bad = "source directory is empty"; + else if (!bad) { + int j, dst_len = strlen(dest_dir); + + if (last - first > 0) { + source = realloc(source, + (count + last - first) + * sizeof(char *)); + destination = realloc(destination, + (count + last - first) + * sizeof(char *)); + modes = realloc(modes, + (count + last - first) + * sizeof(enum update_mode)); + } + + dest_dir = add_slash(dest_dir); + + for (j = 0; j < last - first; j++) { + const char *path = + active_cache[first + j]->name; + source[count + j] = path; + destination[count + j] = + prefix_path(dest_dir, dst_len, + path + len); + modes[count + j] = INDEX; + } + count += last - first; + } + + goto next; + } + + if (!bad && lstat(destination[i], &st) == 0) { + bad = "destination exists"; + if (force) { + /* + * only files can overwrite each other: + * check both source and destination + */ + if (S_ISREG(st.st_mode)) { + fprintf(stderr, "Warning: %s;" + " will overwrite!\n", + bad); + bad = NULL; + path_list_insert(destination[i], + &overwritten); + } else + bad = "Cannot overwrite"; + } + } + + if (!bad && + !strncmp(destination[i], source[i], strlen(source[i]))) + bad = "can not move directory into itself"; + + if (!bad && cache_name_pos(source[i], strlen(source[i])) < 0) + bad = "not under version control"; + + if (!bad) { + if (path_list_has_path(&src_for_dst, destination[i])) + bad = "multiple sources for the same target"; + else + path_list_insert(destination[i], &src_for_dst); + } + +next: + if (bad) { + if (ignore_errors) { + if (--count > 0) { + memmove(source + i, source + i + 1, + (count - i) * sizeof(char *)); + memmove(destination + i, + destination + i + 1, + (count - i) * sizeof(char *)); + } + } else + die ("%s, source=%s, destination=%s", + bad, source[i], destination[i]); + } + } + + for (i = 0; i < count; i++) { + if (show_only || verbose) + printf("Renaming %s to %s\n", + source[i], destination[i]); + if (!show_only && modes[i] != INDEX && + rename(source[i], destination[i]) < 0 && + !ignore_errors) + die ("renaming %s failed: %s", + source[i], strerror(errno)); + + if (modes[i] == WORKING_DIRECTORY) + continue; + + if (cache_name_pos(source[i], strlen(source[i])) >= 0) { + path_list_insert(source[i], &deleted); + + /* destination can be a directory with 1 file inside */ + if (path_list_has_path(&overwritten, destination[i])) + path_list_insert(destination[i], &changed); + else + path_list_insert(destination[i], &added); + } else + path_list_insert(destination[i], &added); + } + + if (show_only) { + show_list("Changed : ", &changed); + show_list("Adding : ", &added); + show_list("Deleting : ", &deleted); + } else { + for (i = 0; i < changed.nr; i++) { + const char *path = changed.items[i].path; + int i = cache_name_pos(path, strlen(path)); + struct cache_entry *ce = active_cache[i]; + + if (i < 0) + die ("Huh? Cache entry for %s unknown?", path); + refresh_cache_entry(ce, 0); + } + + for (i = 0; i < added.nr; i++) { + const char *path = added.items[i].path; + add_file_to_index(path, verbose); + } + + for (i = 0; i < deleted.nr; i++) { + const char *path = deleted.items[i].path; + remove_file_from_cache(path); + } + + if (active_cache_changed) { + if (write_cache(newfd, active_cache, active_nr) || + close(newfd) || + commit_lock_file(&lock_file)) + die("Unable to write new index file"); + } + } + + return 0; +} |