f01315ef7d
Apply Coccinelle rule to turn raw memmove() into MOVE_ARRAY() cpp macro, which would improve maintainability and readability. * jc/builtin-mv-move-array: builtin/mv.c: use the MOVE_ARRAY() macro instead of memmove()
456 lines
12 KiB
C
456 lines
12 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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#define USE_THE_INDEX_COMPATIBILITY_MACROS
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#include "builtin.h"
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#include "config.h"
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#include "pathspec.h"
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#include "lockfile.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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#include "submodule.h"
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#include "entry.h"
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static const char * const builtin_mv_usage[] = {
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N_("git mv [<options>] <source>... <destination>"),
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NULL
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};
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enum update_mode {
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BOTH = 0,
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WORKING_DIRECTORY = (1 << 1),
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INDEX = (1 << 2),
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SPARSE = (1 << 3),
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SKIP_WORKTREE_DIR = (1 << 4),
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};
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#define DUP_BASENAME 1
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#define KEEP_TRAILING_SLASH 2
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static const char **internal_prefix_pathspec(const char *prefix,
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const char **pathspec,
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int count, unsigned flags)
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{
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int i;
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const char **result;
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int prefixlen = prefix ? strlen(prefix) : 0;
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ALLOC_ARRAY(result, count + 1);
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/* Create an intermediate copy of the pathspec based on the flags */
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for (i = 0; i < count; i++) {
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int length = strlen(pathspec[i]);
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int to_copy = length;
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char *it;
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while (!(flags & KEEP_TRAILING_SLASH) &&
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to_copy > 0 && is_dir_sep(pathspec[i][to_copy - 1]))
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to_copy--;
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it = xmemdupz(pathspec[i], to_copy);
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if (flags & DUP_BASENAME) {
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result[i] = xstrdup(basename(it));
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free(it);
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} else {
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result[i] = it;
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}
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}
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result[count] = NULL;
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/* Prefix the pathspec and free the old intermediate strings */
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for (i = 0; i < count; i++) {
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const char *match = prefix_path(prefix, prefixlen, result[i]);
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free((char *) result[i]);
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result[i] = match;
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}
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return 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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size_t len = strlen(path);
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if (path[len - 1] != '/') {
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char *with_slash = xmalloc(st_add(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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#define SUBMODULE_WITH_GITDIR ((const char *)1)
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static void prepare_move_submodule(const char *src, int first,
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const char **submodule_gitfile)
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{
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struct strbuf submodule_dotgit = STRBUF_INIT;
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if (!S_ISGITLINK(active_cache[first]->ce_mode))
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die(_("Directory %s is in index and no submodule?"), src);
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if (!is_staging_gitmodules_ok(&the_index))
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die(_("Please stage your changes to .gitmodules or stash them to proceed"));
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strbuf_addf(&submodule_dotgit, "%s/.git", src);
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*submodule_gitfile = read_gitfile(submodule_dotgit.buf);
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if (*submodule_gitfile)
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*submodule_gitfile = xstrdup(*submodule_gitfile);
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else
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*submodule_gitfile = SUBMODULE_WITH_GITDIR;
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strbuf_release(&submodule_dotgit);
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}
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static int index_range_of_same_dir(const char *src, int length,
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int *first_p, int *last_p)
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{
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const char *src_w_slash = add_slash(src);
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int first, last, len_w_slash = length + 1;
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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(_("%.*s is in index"), 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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if (src_w_slash != src)
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free((char *)src_w_slash);
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*first_p = first;
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*last_p = last;
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return last - first;
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}
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/*
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* Check if an out-of-cone directory should be in the index. Imagine this case
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* that all the files under a directory are marked with 'CE_SKIP_WORKTREE' bit
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* and thus the directory is sparsified.
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*
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* Return 0 if such directory exist (i.e. with any of its contained files not
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* marked with CE_SKIP_WORKTREE, the directory would be present in working tree).
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* Return 1 otherwise.
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*/
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static int check_dir_in_index(const char *name)
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{
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const char *with_slash = add_slash(name);
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int length = strlen(with_slash);
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int pos = cache_name_pos(with_slash, length);
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const struct cache_entry *ce;
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if (pos < 0) {
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pos = -pos - 1;
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if (pos >= the_index.cache_nr)
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return 1;
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ce = active_cache[pos];
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if (strncmp(with_slash, ce->name, length))
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return 1;
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if (ce_skip_worktree(ce))
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return 0;
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}
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return 1;
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}
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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, flags, gitmodules_modified = 0;
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int verbose = 0, show_only = 0, force = 0, ignore_errors = 0, ignore_sparse = 0;
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struct option builtin_mv_options[] = {
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OPT__VERBOSE(&verbose, N_("be verbose")),
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OPT__DRY_RUN(&show_only, N_("dry run")),
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OPT__FORCE(&force, N_("force move/rename even if target exists"),
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PARSE_OPT_NOCOMPLETE),
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OPT_BOOL('k', NULL, &ignore_errors, N_("skip move/rename errors")),
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OPT_BOOL(0, "sparse", &ignore_sparse, N_("allow updating entries outside of the sparse-checkout cone")),
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OPT_END(),
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};
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const char **source, **destination, **dest_path, **submodule_gitfile;
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enum update_mode *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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struct lock_file lock_file = LOCK_INIT;
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struct cache_entry *ce;
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struct string_list only_match_skip_worktree = 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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hold_locked_index(&lock_file, LOCK_DIE_ON_ERROR);
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if (read_cache() < 0)
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die(_("index file corrupt"));
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source = internal_prefix_pathspec(prefix, argv, argc, 0);
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CALLOC_ARRAY(modes, argc);
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/*
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* Keep trailing slash, needed to let
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* "git mv file no-such-dir/" error out, except in the case
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* "git mv directory no-such-dir/".
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*/
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flags = KEEP_TRAILING_SLASH;
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if (argc == 1 && is_directory(argv[0]) && !is_directory(argv[1]))
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flags = 0;
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dest_path = internal_prefix_pathspec(prefix, argv + argc, 1, flags);
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submodule_gitfile = xcalloc(argc, sizeof(char *));
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if (dest_path[0][0] == '\0')
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/* special case: "." was normalized to "" */
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destination = internal_prefix_pathspec(dest_path[0], argv, argc, DUP_BASENAME);
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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 = internal_prefix_pathspec(dest_path[0], argv, argc, DUP_BASENAME);
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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;
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const char *bad = NULL;
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int skip_sparse = 0;
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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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int pos;
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const struct cache_entry *ce;
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pos = cache_name_pos(src, length);
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if (pos < 0) {
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const char *src_w_slash = add_slash(src);
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if (!path_in_sparse_checkout(src_w_slash, &the_index) &&
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!check_dir_in_index(src)) {
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modes[i] |= SKIP_WORKTREE_DIR;
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goto dir_check;
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}
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/* only error if existence is expected. */
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if (!(modes[i] & SPARSE))
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bad = _("bad source");
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goto act_on_entry;
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}
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ce = active_cache[pos];
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if (!ce_skip_worktree(ce)) {
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bad = _("bad source");
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goto act_on_entry;
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}
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if (!ignore_sparse) {
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string_list_append(&only_match_skip_worktree, src);
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goto act_on_entry;
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}
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/* Check if dst exists in index */
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if (cache_name_pos(dst, strlen(dst)) < 0) {
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modes[i] |= SPARSE;
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goto act_on_entry;
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}
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if (!force) {
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bad = _("destination exists");
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goto act_on_entry;
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}
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modes[i] |= SPARSE;
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goto act_on_entry;
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}
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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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goto act_on_entry;
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}
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if (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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goto act_on_entry;
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}
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dir_check:
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if (S_ISDIR(st.st_mode)) {
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int j, dst_len, n;
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int first = cache_name_pos(src, length), last;
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if (first >= 0) {
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prepare_move_submodule(src, first,
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submodule_gitfile + i);
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goto act_on_entry;
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} else if (index_range_of_same_dir(src, length,
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&first, &last) < 1) {
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bad = _("source directory is empty");
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goto act_on_entry;
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}
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/* last - first >= 1 */
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modes[i] |= WORKING_DIRECTORY;
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n = argc + last - first;
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REALLOC_ARRAY(source, n);
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REALLOC_ARRAY(destination, n);
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REALLOC_ARRAY(modes, n);
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REALLOC_ARRAY(submodule_gitfile, n);
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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 struct cache_entry *ce = active_cache[first + j];
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const char *path = ce->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, path + length + 1);
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memset(modes + argc + j, 0, sizeof(enum update_mode));
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modes[argc + j] |= ce_skip_worktree(ce) ? SPARSE : INDEX;
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submodule_gitfile[argc + j] = NULL;
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}
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argc += last - first;
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goto act_on_entry;
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}
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if (!(ce = cache_file_exists(src, length, 0))) {
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bad = _("not under version control");
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goto act_on_entry;
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}
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if (ce_stage(ce)) {
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bad = _("conflicted");
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goto act_on_entry;
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}
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if (lstat(dst, &st) == 0 &&
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(!ignore_case || strcasecmp(src, dst))) {
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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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if (verbose)
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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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goto act_on_entry;
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}
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if (string_list_has_string(&src_for_dst, dst)) {
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bad = _("multiple sources for the same target");
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goto act_on_entry;
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}
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if (is_dir_sep(dst[strlen(dst) - 1])) {
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bad = _("destination directory does not exist");
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goto act_on_entry;
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}
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/*
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* We check if the paths are in the sparse-checkout
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* definition as a very final check, since that
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* allows us to point the user to the --sparse
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* option as a way to have a successful run.
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*/
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if (!ignore_sparse &&
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!path_in_sparse_checkout(src, &the_index)) {
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string_list_append(&only_match_skip_worktree, src);
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skip_sparse = 1;
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}
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if (!ignore_sparse &&
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!path_in_sparse_checkout(dst, &the_index)) {
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string_list_append(&only_match_skip_worktree, dst);
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skip_sparse = 1;
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}
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if (skip_sparse)
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goto remove_entry;
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string_list_insert(&src_for_dst, dst);
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act_on_entry:
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if (!bad)
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continue;
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if (!ignore_errors)
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die(_("%s, source=%s, destination=%s"),
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bad, src, dst);
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remove_entry:
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if (--argc > 0) {
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int n = argc - i;
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MOVE_ARRAY(source + i, source + i + 1, n);
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MOVE_ARRAY(destination + i, destination + i + 1, n);
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MOVE_ARRAY(modes + i, modes + i + 1, n);
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MOVE_ARRAY(submodule_gitfile + i,
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submodule_gitfile + i + 1, n);
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i--;
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}
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}
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if (only_match_skip_worktree.nr) {
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advise_on_updating_sparse_paths(&only_match_skip_worktree);
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if (!ignore_errors)
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return 1;
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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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struct checkout state = CHECKOUT_INIT;
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state.istate = &the_index;
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if (force)
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state.force = 1;
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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)
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continue;
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if (!(mode & (INDEX | SPARSE | SKIP_WORKTREE_DIR)) &&
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rename(src, dst) < 0) {
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if (ignore_errors)
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continue;
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die_errno(_("renaming '%s' failed"), src);
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}
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if (submodule_gitfile[i]) {
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if (!update_path_in_gitmodules(src, dst))
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gitmodules_modified = 1;
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if (submodule_gitfile[i] != SUBMODULE_WITH_GITDIR)
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connect_work_tree_and_git_dir(dst,
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submodule_gitfile[i],
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1);
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}
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if (mode & (WORKING_DIRECTORY | SKIP_WORKTREE_DIR))
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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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rename_cache_entry_at(pos, dst);
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if ((mode & SPARSE) &&
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(path_in_sparse_checkout(dst, &the_index))) {
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int dst_pos;
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dst_pos = cache_name_pos(dst, strlen(dst));
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active_cache[dst_pos]->ce_flags &= ~CE_SKIP_WORKTREE;
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if (checkout_entry(active_cache[dst_pos], &state, NULL, NULL))
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die(_("cannot checkout %s"), active_cache[dst_pos]->name);
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}
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}
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if (gitmodules_modified)
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stage_updated_gitmodules(&the_index);
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if (write_locked_index(&the_index, &lock_file,
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COMMIT_LOCK | SKIP_IF_UNCHANGED))
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die(_("Unable to write new index file"));
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string_list_clear(&src_for_dst, 0);
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UNLEAK(source);
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UNLEAK(dest_path);
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free(submodule_gitfile);
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free(modes);
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return 0;
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}
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