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![Jens Lehmann](/assets/img/avatar_default.png)
Sometimes it is useful to know if a file or directory will be ignored before it is added to the work tree. An example is "git submodule add", where it would be really nice to be able to fail with an appropriate error message before the submodule is cloned and checked out. Signed-off-by: Jens Lehmann <Jens.Lehmann@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
473 lines
12 KiB
C
473 lines
12 KiB
C
/*
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* "git add" builtin command
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*
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* Copyright (C) 2006 Linus Torvalds
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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 "exec_cmd.h"
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#include "cache-tree.h"
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#include "run-command.h"
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#include "parse-options.h"
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#include "diff.h"
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#include "diffcore.h"
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#include "revision.h"
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static const char * const builtin_add_usage[] = {
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"git add [options] [--] <filepattern>...",
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NULL
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};
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static int patch_interactive, add_interactive, edit_interactive;
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static int take_worktree_changes;
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struct update_callback_data
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{
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int flags;
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int add_errors;
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};
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static void update_callback(struct diff_queue_struct *q,
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struct diff_options *opt, void *cbdata)
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{
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int i;
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struct update_callback_data *data = cbdata;
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for (i = 0; i < q->nr; i++) {
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struct diff_filepair *p = q->queue[i];
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const char *path = p->one->path;
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switch (p->status) {
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default:
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die("unexpected diff status %c", p->status);
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case DIFF_STATUS_UNMERGED:
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/*
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* ADD_CACHE_IGNORE_REMOVAL is unset if "git
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* add -u" is calling us, In such a case, a
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* missing work tree file needs to be removed
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* if there is an unmerged entry at stage #2,
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* but such a diff record is followed by
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* another with DIFF_STATUS_DELETED (and if
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* there is no stage #2, we won't see DELETED
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* nor MODIFIED). We can simply continue
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* either way.
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*/
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if (!(data->flags & ADD_CACHE_IGNORE_REMOVAL))
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continue;
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/*
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* Otherwise, it is "git add path" is asking
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* to explicitly add it; we fall through. A
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* missing work tree file is an error and is
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* caught by add_file_to_index() in such a
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* case.
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*/
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case DIFF_STATUS_MODIFIED:
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case DIFF_STATUS_TYPE_CHANGED:
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if (add_file_to_index(&the_index, path, data->flags)) {
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if (!(data->flags & ADD_CACHE_IGNORE_ERRORS))
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die("updating files failed");
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data->add_errors++;
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}
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break;
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case DIFF_STATUS_DELETED:
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if (data->flags & ADD_CACHE_IGNORE_REMOVAL)
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break;
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if (!(data->flags & ADD_CACHE_PRETEND))
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remove_file_from_index(&the_index, path);
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if (data->flags & (ADD_CACHE_PRETEND|ADD_CACHE_VERBOSE))
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printf("remove '%s'\n", path);
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break;
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}
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}
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}
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int add_files_to_cache(const char *prefix, const char **pathspec, int flags)
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{
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struct update_callback_data data;
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struct rev_info rev;
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init_revisions(&rev, prefix);
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setup_revisions(0, NULL, &rev, NULL);
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rev.prune_data = pathspec;
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rev.diffopt.output_format = DIFF_FORMAT_CALLBACK;
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rev.diffopt.format_callback = update_callback;
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data.flags = flags;
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data.add_errors = 0;
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rev.diffopt.format_callback_data = &data;
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run_diff_files(&rev, DIFF_RACY_IS_MODIFIED);
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return !!data.add_errors;
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}
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static void fill_pathspec_matches(const char **pathspec, char *seen, int specs)
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{
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int num_unmatched = 0, i;
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/*
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* Since we are walking the index as if we were walking the directory,
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* we have to mark the matched pathspec as seen; otherwise we will
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* mistakenly think that the user gave a pathspec that did not match
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* anything.
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*/
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for (i = 0; i < specs; i++)
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if (!seen[i])
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num_unmatched++;
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if (!num_unmatched)
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return;
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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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match_pathspec(pathspec, ce->name, ce_namelen(ce), 0, seen);
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}
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}
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static char *find_used_pathspec(const char **pathspec)
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{
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char *seen;
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int i;
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for (i = 0; pathspec[i]; i++)
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; /* just counting */
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seen = xcalloc(i, 1);
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fill_pathspec_matches(pathspec, seen, i);
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return seen;
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}
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static char *prune_directory(struct dir_struct *dir, const char **pathspec, int prefix)
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{
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char *seen;
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int i, specs;
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struct dir_entry **src, **dst;
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for (specs = 0; pathspec[specs]; specs++)
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/* nothing */;
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seen = xcalloc(specs, 1);
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src = dst = dir->entries;
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i = dir->nr;
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while (--i >= 0) {
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struct dir_entry *entry = *src++;
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if (match_pathspec(pathspec, entry->name, entry->len,
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prefix, seen))
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*dst++ = entry;
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}
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dir->nr = dst - dir->entries;
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fill_pathspec_matches(pathspec, seen, specs);
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return seen;
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}
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static void treat_gitlinks(const char **pathspec)
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{
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int i;
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if (!pathspec || !*pathspec)
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return;
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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 (S_ISGITLINK(ce->ce_mode)) {
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int len = ce_namelen(ce), j;
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for (j = 0; pathspec[j]; j++) {
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int len2 = strlen(pathspec[j]);
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if (len2 <= len || pathspec[j][len] != '/' ||
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memcmp(ce->name, pathspec[j], len))
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continue;
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if (len2 == len + 1)
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/* strip trailing slash */
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pathspec[j] = xstrndup(ce->name, len);
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else
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die ("Path '%s' is in submodule '%.*s'",
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pathspec[j], len, ce->name);
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}
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}
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}
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}
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static void refresh(int verbose, const char **pathspec)
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{
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char *seen;
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int i, specs;
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for (specs = 0; pathspec[specs]; specs++)
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/* nothing */;
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seen = xcalloc(specs, 1);
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refresh_index(&the_index, verbose ? REFRESH_IN_PORCELAIN : REFRESH_QUIET,
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pathspec, seen, "Unstaged changes after refreshing the index:");
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for (i = 0; i < specs; i++) {
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if (!seen[i])
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die("pathspec '%s' did not match any files", pathspec[i]);
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}
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free(seen);
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}
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static const char **validate_pathspec(int argc, const char **argv, const char *prefix)
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{
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const char **pathspec = get_pathspec(prefix, argv);
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if (pathspec) {
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const char **p;
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for (p = pathspec; *p; p++) {
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if (has_symlink_leading_path(*p, strlen(*p))) {
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int len = prefix ? strlen(prefix) : 0;
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die("'%s' is beyond a symbolic link", *p + len);
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}
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}
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}
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return pathspec;
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}
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int run_add_interactive(const char *revision, const char *patch_mode,
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const char **pathspec)
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{
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int status, ac, pc = 0;
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const char **args;
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if (pathspec)
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while (pathspec[pc])
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pc++;
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args = xcalloc(sizeof(const char *), (pc + 5));
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ac = 0;
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args[ac++] = "add--interactive";
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if (patch_mode)
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args[ac++] = patch_mode;
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if (revision)
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args[ac++] = revision;
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args[ac++] = "--";
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if (pc) {
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memcpy(&(args[ac]), pathspec, sizeof(const char *) * pc);
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ac += pc;
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}
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args[ac] = NULL;
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status = run_command_v_opt(args, RUN_GIT_CMD);
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free(args);
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return status;
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}
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int interactive_add(int argc, const char **argv, const char *prefix)
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{
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const char **pathspec = NULL;
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if (argc) {
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pathspec = validate_pathspec(argc, argv, prefix);
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if (!pathspec)
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return -1;
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}
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return run_add_interactive(NULL,
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patch_interactive ? "--patch" : NULL,
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pathspec);
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}
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static int edit_patch(int argc, const char **argv, const char *prefix)
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{
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char *file = xstrdup(git_path("ADD_EDIT.patch"));
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const char *apply_argv[] = { "apply", "--recount", "--cached",
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NULL, NULL };
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struct child_process child;
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struct rev_info rev;
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int out;
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struct stat st;
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apply_argv[3] = file;
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git_config(git_diff_basic_config, NULL); /* no "diff" UI options */
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if (read_cache() < 0)
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die ("Could not read the index");
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init_revisions(&rev, prefix);
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rev.diffopt.context = 7;
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argc = setup_revisions(argc, argv, &rev, NULL);
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rev.diffopt.output_format = DIFF_FORMAT_PATCH;
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out = open(file, O_CREAT | O_WRONLY, 0644);
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if (out < 0)
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die ("Could not open '%s' for writing.", file);
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rev.diffopt.file = xfdopen(out, "w");
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rev.diffopt.close_file = 1;
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if (run_diff_files(&rev, 0))
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die ("Could not write patch");
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launch_editor(file, NULL, NULL);
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if (stat(file, &st))
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die_errno("Could not stat '%s'", file);
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if (!st.st_size)
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die("Empty patch. Aborted.");
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memset(&child, 0, sizeof(child));
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child.git_cmd = 1;
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child.argv = apply_argv;
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if (run_command(&child))
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die ("Could not apply '%s'", file);
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unlink(file);
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return 0;
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}
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static struct lock_file lock_file;
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static const char ignore_error[] =
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"The following paths are ignored by one of your .gitignore files:\n";
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static int verbose = 0, show_only = 0, ignored_too = 0, refresh_only = 0;
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static int ignore_add_errors, addremove, intent_to_add, ignore_missing = 0;
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static struct option builtin_add_options[] = {
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OPT__DRY_RUN(&show_only),
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OPT__VERBOSE(&verbose),
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OPT_GROUP(""),
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OPT_BOOLEAN('i', "interactive", &add_interactive, "interactive picking"),
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OPT_BOOLEAN('p', "patch", &patch_interactive, "interactive patching"),
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OPT_BOOLEAN('e', "edit", &edit_interactive, "edit current diff and apply"),
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OPT_BOOLEAN('f', "force", &ignored_too, "allow adding otherwise ignored files"),
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OPT_BOOLEAN('u', "update", &take_worktree_changes, "update tracked files"),
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OPT_BOOLEAN('N', "intent-to-add", &intent_to_add, "record only the fact that the path will be added later"),
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OPT_BOOLEAN('A', "all", &addremove, "add all, noticing removal of tracked files"),
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OPT_BOOLEAN( 0 , "refresh", &refresh_only, "don't add, only refresh the index"),
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OPT_BOOLEAN( 0 , "ignore-errors", &ignore_add_errors, "just skip files which cannot be added because of errors"),
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OPT_BOOLEAN( 0 , "ignore-missing", &ignore_missing, "check if - even missing - files are ignored in dry run"),
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OPT_END(),
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};
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static int add_config(const char *var, const char *value, void *cb)
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{
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if (!strcasecmp(var, "add.ignore-errors")) {
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ignore_add_errors = git_config_bool(var, value);
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return 0;
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}
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return git_default_config(var, value, cb);
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}
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static int add_files(struct dir_struct *dir, int flags)
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{
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int i, exit_status = 0;
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if (dir->ignored_nr) {
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fprintf(stderr, ignore_error);
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for (i = 0; i < dir->ignored_nr; i++)
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fprintf(stderr, "%s\n", dir->ignored[i]->name);
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fprintf(stderr, "Use -f if you really want to add them.\n");
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die("no files added");
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}
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for (i = 0; i < dir->nr; i++)
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if (add_file_to_cache(dir->entries[i]->name, flags)) {
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if (!ignore_add_errors)
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die("adding files failed");
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exit_status = 1;
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}
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return exit_status;
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}
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int cmd_add(int argc, const char **argv, const char *prefix)
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{
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int exit_status = 0;
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int newfd;
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const char **pathspec;
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struct dir_struct dir;
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int flags;
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int add_new_files;
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int require_pathspec;
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char *seen = NULL;
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git_config(add_config, NULL);
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argc = parse_options(argc, argv, prefix, builtin_add_options,
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builtin_add_usage, PARSE_OPT_KEEP_ARGV0);
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if (patch_interactive)
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add_interactive = 1;
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if (add_interactive)
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exit(interactive_add(argc - 1, argv + 1, prefix));
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if (edit_interactive)
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return(edit_patch(argc, argv, prefix));
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argc--;
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argv++;
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if (addremove && take_worktree_changes)
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die("-A and -u are mutually incompatible");
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if (!show_only && ignore_missing)
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die("Option --ignore-missing can only be used together with --dry-run");
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if ((addremove || take_worktree_changes) && !argc) {
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static const char *here[2] = { ".", NULL };
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argc = 1;
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argv = here;
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}
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add_new_files = !take_worktree_changes && !refresh_only;
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require_pathspec = !take_worktree_changes;
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newfd = hold_locked_index(&lock_file, 1);
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flags = ((verbose ? ADD_CACHE_VERBOSE : 0) |
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(show_only ? ADD_CACHE_PRETEND : 0) |
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(intent_to_add ? ADD_CACHE_INTENT : 0) |
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(ignore_add_errors ? ADD_CACHE_IGNORE_ERRORS : 0) |
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(!(addremove || take_worktree_changes)
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? ADD_CACHE_IGNORE_REMOVAL : 0));
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if (require_pathspec && argc == 0) {
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fprintf(stderr, "Nothing specified, nothing added.\n");
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fprintf(stderr, "Maybe you wanted to say 'git add .'?\n");
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return 0;
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}
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pathspec = validate_pathspec(argc, argv, prefix);
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if (read_cache() < 0)
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die("index file corrupt");
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treat_gitlinks(pathspec);
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if (add_new_files) {
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int baselen;
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/* Set up the default git porcelain excludes */
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memset(&dir, 0, sizeof(dir));
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if (!ignored_too) {
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dir.flags |= DIR_COLLECT_IGNORED;
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setup_standard_excludes(&dir);
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}
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/* This picks up the paths that are not tracked */
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baselen = fill_directory(&dir, pathspec);
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if (pathspec)
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seen = prune_directory(&dir, pathspec, baselen);
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}
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if (refresh_only) {
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refresh(verbose, pathspec);
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goto finish;
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}
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if (pathspec) {
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int i;
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if (!seen)
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seen = find_used_pathspec(pathspec);
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for (i = 0; pathspec[i]; i++) {
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if (!seen[i] && pathspec[i][0]
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&& !file_exists(pathspec[i])) {
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if (ignore_missing) {
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if (excluded(&dir, pathspec[i], DT_UNKNOWN))
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dir_add_ignored(&dir, pathspec[i], strlen(pathspec[i]));
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} else
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die("pathspec '%s' did not match any files",
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pathspec[i]);
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}
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}
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free(seen);
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}
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exit_status |= add_files_to_cache(prefix, pathspec, flags);
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if (add_new_files)
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exit_status |= add_files(&dir, flags);
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finish:
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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 exit_status;
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}
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