diff options
Diffstat (limited to 'builtin/mv.c')
| -rw-r--r-- | builtin/mv.c | 304 |
1 files changed, 304 insertions, 0 deletions
diff --git a/builtin/mv.c b/builtin/mv.c new file mode 100644 index 000000000000..be15ba7044e0 --- /dev/null +++ b/builtin/mv.c @@ -0,0 +1,304 @@ +/* + * "git mv" builtin command + * + * Copyright (C) 2006 Johannes Schindelin + */ +#define USE_THE_INDEX_COMPATIBILITY_MACROS +#include "builtin.h" +#include "config.h" +#include "pathspec.h" +#include "lockfile.h" +#include "dir.h" +#include "cache-tree.h" +#include "string-list.h" +#include "parse-options.h" +#include "submodule.h" + +static const char * const builtin_mv_usage[] = { + N_("git mv [<options>] <source>... <destination>"), + NULL +}; + +#define DUP_BASENAME 1 +#define KEEP_TRAILING_SLASH 2 + +static const char **internal_prefix_pathspec(const char *prefix, + const char **pathspec, + int count, unsigned flags) +{ + int i; + const char **result; + int prefixlen = prefix ? strlen(prefix) : 0; + ALLOC_ARRAY(result, count + 1); + + /* Create an intermediate copy of the pathspec based on the flags */ + for (i = 0; i < count; i++) { + int length = strlen(pathspec[i]); + int to_copy = length; + char *it; + while (!(flags & KEEP_TRAILING_SLASH) && + to_copy > 0 && is_dir_sep(pathspec[i][to_copy - 1])) + to_copy--; + + it = xmemdupz(pathspec[i], to_copy); + if (flags & DUP_BASENAME) { + result[i] = xstrdup(basename(it)); + free(it); + } else { + result[i] = it; + } + } + result[count] = NULL; + + /* Prefix the pathspec and free the old intermediate strings */ + for (i = 0; i < count; i++) { + const char *match = prefix_path(prefix, prefixlen, result[i]); + free((char *) result[i]); + result[i] = match; + } + + return result; +} + +static const char *add_slash(const char *path) +{ + size_t len = strlen(path); + if (path[len - 1] != '/') { + char *with_slash = xmalloc(st_add(len, 2)); + memcpy(with_slash, path, len); + with_slash[len++] = '/'; + with_slash[len] = 0; + return with_slash; + } + return path; +} + +#define SUBMODULE_WITH_GITDIR ((const char *)1) + +static void prepare_move_submodule(const char *src, int first, + const char **submodule_gitfile) +{ + struct strbuf submodule_dotgit = STRBUF_INIT; + if (!S_ISGITLINK(active_cache[first]->ce_mode)) + die(_("Directory %s is in index and no submodule?"), src); + if (!is_staging_gitmodules_ok(&the_index)) + die(_("Please stage your changes to .gitmodules or stash them to proceed")); + strbuf_addf(&submodule_dotgit, "%s/.git", src); + *submodule_gitfile = read_gitfile(submodule_dotgit.buf); + if (*submodule_gitfile) + *submodule_gitfile = xstrdup(*submodule_gitfile); + else + *submodule_gitfile = SUBMODULE_WITH_GITDIR; + strbuf_release(&submodule_dotgit); +} + +static int index_range_of_same_dir(const char *src, int length, + int *first_p, int *last_p) +{ + const char *src_w_slash = add_slash(src); + int first, last, len_w_slash = length + 1; + + first = cache_name_pos(src_w_slash, len_w_slash); + if (first >= 0) + die(_("%.*s is in index"), len_w_slash, src_w_slash); + + first = -1 - first; + for (last = first; last < active_nr; last++) { + const char *path = active_cache[last]->name; + if (strncmp(path, src_w_slash, len_w_slash)) + break; + } + if (src_w_slash != src) + free((char *)src_w_slash); + *first_p = first; + *last_p = last; + return last - first; +} + +int cmd_mv(int argc, const char **argv, const char *prefix) +{ + int i, flags, gitmodules_modified = 0; + int verbose = 0, show_only = 0, force = 0, ignore_errors = 0; + struct option builtin_mv_options[] = { + OPT__VERBOSE(&verbose, N_("be verbose")), + OPT__DRY_RUN(&show_only, N_("dry run")), + OPT__FORCE(&force, N_("force move/rename even if target exists"), + PARSE_OPT_NOCOMPLETE), + OPT_BOOL('k', NULL, &ignore_errors, N_("skip move/rename errors")), + OPT_END(), + }; + const char **source, **destination, **dest_path, **submodule_gitfile; + enum update_mode { BOTH = 0, WORKING_DIRECTORY, INDEX } *modes; + struct stat st; + struct string_list src_for_dst = STRING_LIST_INIT_NODUP; + struct lock_file lock_file = LOCK_INIT; + + git_config(git_default_config, NULL); + + argc = parse_options(argc, argv, prefix, builtin_mv_options, + builtin_mv_usage, 0); + if (--argc < 1) + usage_with_options(builtin_mv_usage, builtin_mv_options); + + hold_locked_index(&lock_file, LOCK_DIE_ON_ERROR); + if (read_cache() < 0) + die(_("index file corrupt")); + + source = internal_prefix_pathspec(prefix, argv, argc, 0); + modes = xcalloc(argc, sizeof(enum update_mode)); + /* + * Keep trailing slash, needed to let + * "git mv file no-such-dir/" error out, except in the case + * "git mv directory no-such-dir/". + */ + flags = KEEP_TRAILING_SLASH; + if (argc == 1 && is_directory(argv[0]) && !is_directory(argv[1])) + flags = 0; + dest_path = internal_prefix_pathspec(prefix, argv + argc, 1, flags); + submodule_gitfile = xcalloc(argc, sizeof(char *)); + + if (dest_path[0][0] == '\0') + /* special case: "." was normalized to "" */ + destination = internal_prefix_pathspec(dest_path[0], argv, argc, DUP_BASENAME); + else if (!lstat(dest_path[0], &st) && + S_ISDIR(st.st_mode)) { + dest_path[0] = add_slash(dest_path[0]); + destination = internal_prefix_pathspec(dest_path[0], argv, argc, DUP_BASENAME); + } else { + if (argc != 1) + die(_("destination '%s' is not a directory"), dest_path[0]); + destination = dest_path; + } + + /* Checking */ + for (i = 0; i < argc; i++) { + const char *src = source[i], *dst = destination[i]; + int length, src_is_dir; + const char *bad = NULL; + + if (show_only) + printf(_("Checking rename of '%s' to '%s'\n"), src, dst); + + length = strlen(src); + if (lstat(src, &st) < 0) + bad = _("bad source"); + else if (!strncmp(src, dst, length) && + (dst[length] == 0 || dst[length] == '/')) { + bad = _("can not move directory into itself"); + } else if ((src_is_dir = S_ISDIR(st.st_mode)) + && lstat(dst, &st) == 0) + bad = _("cannot move directory over file"); + else if (src_is_dir) { + int first = cache_name_pos(src, length), last; + + if (first >= 0) + prepare_move_submodule(src, first, + submodule_gitfile + i); + else if (index_range_of_same_dir(src, length, + &first, &last) < 1) + bad = _("source directory is empty"); + else { /* last - first >= 1 */ + int j, dst_len, n; + + modes[i] = WORKING_DIRECTORY; + n = argc + last - first; + REALLOC_ARRAY(source, n); + REALLOC_ARRAY(destination, n); + REALLOC_ARRAY(modes, n); + REALLOC_ARRAY(submodule_gitfile, n); + + dst = add_slash(dst); + dst_len = strlen(dst); + + for (j = 0; j < last - first; j++) { + const char *path = active_cache[first + j]->name; + source[argc + j] = path; + destination[argc + j] = + prefix_path(dst, dst_len, path + length + 1); + modes[argc + j] = INDEX; + submodule_gitfile[argc + j] = NULL; + } + argc += last - first; + } + } else if (cache_name_pos(src, length) < 0) + bad = _("not under version control"); + else if (lstat(dst, &st) == 0 && + (!ignore_case || strcasecmp(src, dst))) { + bad = _("destination exists"); + if (force) { + /* + * only files can overwrite each other: + * check both source and destination + */ + if (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode)) { + if (verbose) + warning(_("overwriting '%s'"), dst); + bad = NULL; + } else + bad = _("Cannot overwrite"); + } + } else if (string_list_has_string(&src_for_dst, dst)) + bad = _("multiple sources for the same target"); + else if (is_dir_sep(dst[strlen(dst) - 1])) + bad = _("destination directory does not exist"); + else + string_list_insert(&src_for_dst, dst); + + if (!bad) + continue; + if (!ignore_errors) + die(_("%s, source=%s, destination=%s"), + bad, src, dst); + if (--argc > 0) { + int n = argc - i; + memmove(source + i, source + i + 1, + n * sizeof(char *)); + memmove(destination + i, destination + i + 1, + n * sizeof(char *)); + memmove(modes + i, modes + i + 1, + n * sizeof(enum update_mode)); + memmove(submodule_gitfile + i, submodule_gitfile + i + 1, + n * sizeof(char *)); + i--; + } + } + + for (i = 0; i < argc; i++) { + const char *src = source[i], *dst = destination[i]; + enum update_mode mode = modes[i]; + int pos; + if (show_only || verbose) + printf(_("Renaming %s to %s\n"), src, dst); + if (show_only) + continue; + if (mode != INDEX && rename(src, dst) < 0) { + if (ignore_errors) + continue; + die_errno(_("renaming '%s' failed"), src); + } + if (submodule_gitfile[i]) { + if (!update_path_in_gitmodules(src, dst)) + gitmodules_modified = 1; + if (submodule_gitfile[i] != SUBMODULE_WITH_GITDIR) + connect_work_tree_and_git_dir(dst, + submodule_gitfile[i], + 1); + } + + if (mode == WORKING_DIRECTORY) + continue; + + pos = cache_name_pos(src, strlen(src)); + assert(pos >= 0); + rename_cache_entry_at(pos, dst); + } + + if (gitmodules_modified) + stage_updated_gitmodules(&the_index); + + if (write_locked_index(&the_index, &lock_file, + COMMIT_LOCK | SKIP_IF_UNCHANGED)) + die(_("Unable to write new index file")); + + return 0; +} |