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![Thiago Farina](/assets/img/avatar_default.png)
Signed-off-by: Thiago Farina <tfransosi@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
265 lines
6.9 KiB
C
265 lines
6.9 KiB
C
/*
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* "git rm" builtin command
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*
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* Copyright (C) Linus Torvalds 2006
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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 "tree-walk.h"
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#include "parse-options.h"
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static const char * const builtin_rm_usage[] = {
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"git rm [options] [--] <file>...",
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NULL
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};
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static struct {
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int nr, alloc;
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const char **name;
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} list;
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static int check_local_mod(unsigned char *head, int index_only)
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{
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/*
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* Items in list are already sorted in the cache order,
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* so we could do this a lot more efficiently by using
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* tree_desc based traversal if we wanted to, but I am
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* lazy, and who cares if removal of files is a tad
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* slower than the theoretical maximum speed?
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*/
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int i, no_head;
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int errs = 0;
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no_head = is_null_sha1(head);
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for (i = 0; i < list.nr; i++) {
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struct stat st;
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int pos;
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struct cache_entry *ce;
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const char *name = list.name[i];
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unsigned char sha1[20];
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unsigned mode;
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int local_changes = 0;
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int staged_changes = 0;
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pos = cache_name_pos(name, strlen(name));
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if (pos < 0)
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continue; /* removing unmerged entry */
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ce = active_cache[pos];
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if (lstat(ce->name, &st) < 0) {
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if (errno != ENOENT)
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warning("'%s': %s", ce->name, strerror(errno));
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/* It already vanished from the working tree */
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continue;
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}
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else if (S_ISDIR(st.st_mode)) {
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/* if a file was removed and it is now a
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* directory, that is the same as ENOENT as
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* far as git is concerned; we do not track
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* directories.
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*/
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continue;
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}
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/*
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* "rm" of a path that has changes need to be treated
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* carefully not to allow losing local changes
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* accidentally. A local change could be (1) file in
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* work tree is different since the index; and/or (2)
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* the user staged a content that is different from
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* the current commit in the index.
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*
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* In such a case, you would need to --force the
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* removal. However, "rm --cached" (remove only from
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* the index) is safe if the index matches the file in
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* the work tree or the HEAD commit, as it means that
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* the content being removed is available elsewhere.
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*/
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/*
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* Is the index different from the file in the work tree?
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*/
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if (ce_match_stat(ce, &st, 0))
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local_changes = 1;
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/*
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* Is the index different from the HEAD commit? By
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* definition, before the very initial commit,
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* anything staged in the index is treated by the same
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* way as changed from the HEAD.
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*/
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if (no_head
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|| get_tree_entry(head, name, sha1, &mode)
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|| ce->ce_mode != create_ce_mode(mode)
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|| hashcmp(ce->sha1, sha1))
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staged_changes = 1;
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/*
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* If the index does not match the file in the work
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* tree and if it does not match the HEAD commit
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* either, (1) "git rm" without --cached definitely
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* will lose information; (2) "git rm --cached" will
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* lose information unless it is about removing an
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* "intent to add" entry.
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*/
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if (local_changes && staged_changes) {
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if (!index_only || !(ce->ce_flags & CE_INTENT_TO_ADD))
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errs = error("'%s' has staged content different "
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"from both the file and the HEAD\n"
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"(use -f to force removal)", name);
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}
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else if (!index_only) {
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if (staged_changes)
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errs = error("'%s' has changes staged in the index\n"
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"(use --cached to keep the file, "
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"or -f to force removal)", name);
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if (local_changes)
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errs = error("'%s' has local modifications\n"
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"(use --cached to keep the file, "
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"or -f to force removal)", name);
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}
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}
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return errs;
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}
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static struct lock_file lock_file;
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static int show_only = 0, force = 0, index_only = 0, recursive = 0, quiet = 0;
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static int ignore_unmatch = 0;
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static struct option builtin_rm_options[] = {
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OPT__DRY_RUN(&show_only, "dry run"),
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OPT__QUIET(&quiet, "do not list removed files"),
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OPT_BOOLEAN( 0 , "cached", &index_only, "only remove from the index"),
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OPT__FORCE(&force, "override the up-to-date check"),
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OPT_BOOLEAN('r', NULL, &recursive, "allow recursive removal"),
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OPT_BOOLEAN( 0 , "ignore-unmatch", &ignore_unmatch,
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"exit with a zero status even if nothing matched"),
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OPT_END(),
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};
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int cmd_rm(int argc, const char **argv, const char *prefix)
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{
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int i, newfd;
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const char **pathspec;
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char *seen;
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git_config(git_default_config, NULL);
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argc = parse_options(argc, argv, prefix, builtin_rm_options,
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builtin_rm_usage, 0);
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if (!argc)
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usage_with_options(builtin_rm_usage, builtin_rm_options);
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if (!index_only)
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setup_work_tree();
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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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pathspec = get_pathspec(prefix, argv);
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refresh_index(&the_index, REFRESH_QUIET, pathspec, NULL, NULL);
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seen = NULL;
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for (i = 0; pathspec[i] ; i++)
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/* nothing */;
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seen = xcalloc(i, 1);
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for (i = 0; i < active_nr; i++) {
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struct cache_entry *ce = active_cache[i];
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if (!match_pathspec(pathspec, ce->name, ce_namelen(ce), 0, seen))
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continue;
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ALLOC_GROW(list.name, list.nr + 1, list.alloc);
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list.name[list.nr++] = ce->name;
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}
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if (pathspec) {
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const char *match;
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int seen_any = 0;
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for (i = 0; (match = pathspec[i]) != NULL ; i++) {
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if (!seen[i]) {
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if (!ignore_unmatch) {
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die("pathspec '%s' did not match any files",
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match);
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}
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}
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else {
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seen_any = 1;
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}
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if (!recursive && seen[i] == MATCHED_RECURSIVELY)
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die("not removing '%s' recursively without -r",
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*match ? match : ".");
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}
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if (! seen_any)
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exit(0);
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}
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/*
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* If not forced, the file, the index and the HEAD (if exists)
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* must match; but the file can already been removed, since
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* this sequence is a natural "novice" way:
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*
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* rm F; git rm F
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*
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* Further, if HEAD commit exists, "diff-index --cached" must
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* report no changes unless forced.
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*/
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if (!force) {
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unsigned char sha1[20];
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if (get_sha1("HEAD", sha1))
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hashclr(sha1);
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if (check_local_mod(sha1, index_only))
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exit(1);
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}
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/*
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* First remove the names from the index: we won't commit
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* the index unless all of them succeed.
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*/
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for (i = 0; i < list.nr; i++) {
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const char *path = list.name[i];
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if (!quiet)
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printf("rm '%s'\n", path);
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if (remove_file_from_cache(path))
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die("git rm: unable to remove %s", path);
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}
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if (show_only)
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return 0;
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/*
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* Then, unless we used "--cached", remove the filenames from
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* the workspace. If we fail to remove the first one, we
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* abort the "git rm" (but once we've successfully removed
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* any file at all, we'll go ahead and commit to it all:
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* by then we've already committed ourselves and can't fail
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* in the middle)
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*/
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if (!index_only) {
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int removed = 0;
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for (i = 0; i < list.nr; i++) {
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const char *path = list.name[i];
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if (!remove_path(path)) {
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removed = 1;
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continue;
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}
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if (!removed)
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die_errno("git rm: '%s'", path);
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}
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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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