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https://github.com/git/git
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d6b8fc303b
A pattern "foo/" in the exclude list did not match directory "foo", but a pattern "foo" did. This attempts to extend the exclude mechanism so that it would while not matching a regular file or a symbolic link "foo". In order to differentiate a directory and non directory, this passes down the type of path being checked to excluded() function. A downside is that the recursive directory walk may need to run lstat(2) more often on systems whose "struct dirent" do not give the type of the entry; earlier it did not have to do so for an excluded path, but we now need to figure out if a path is a directory before deciding to exclude it. This is especially bad because an idea similar to the earlier CE_UPTODATE optimization to reduce number of lstat(2) calls would by definition not apply to the codepaths involved, as (1) directories will not be registered in the index, and (2) excluded paths will not be in the index anyway. Signed-off-by: Junio C Hamano <gitster@pobox.com>
624 lines
14 KiB
C
624 lines
14 KiB
C
/*
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* This merges the file listing in the directory cache index
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* with the actual working directory list, and shows different
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* combinations of the two.
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*
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* Copyright (C) Linus Torvalds, 2005
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*/
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#include "cache.h"
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#include "quote.h"
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#include "dir.h"
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#include "builtin.h"
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#include "tree.h"
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static int abbrev;
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static int show_deleted;
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static int show_cached;
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static int show_others;
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static int show_stage;
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static int show_unmerged;
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static int show_modified;
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static int show_killed;
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static int show_valid_bit;
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static int line_terminator = '\n';
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static int prefix_len;
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static int prefix_offset;
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static const char **pathspec;
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static int error_unmatch;
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static char *ps_matched;
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static const char *with_tree;
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static const char *tag_cached = "";
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static const char *tag_unmerged = "";
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static const char *tag_removed = "";
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static const char *tag_other = "";
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static const char *tag_killed = "";
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static const char *tag_modified = "";
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/*
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* Match a pathspec against a filename. The first "skiplen" characters
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* are the common prefix
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*/
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int pathspec_match(const char **spec, char *ps_matched,
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const char *filename, int skiplen)
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{
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const char *m;
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while ((m = *spec++) != NULL) {
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int matchlen = strlen(m + skiplen);
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if (!matchlen)
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goto matched;
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if (!strncmp(m + skiplen, filename + skiplen, matchlen)) {
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if (m[skiplen + matchlen - 1] == '/')
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goto matched;
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switch (filename[skiplen + matchlen]) {
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case '/': case '\0':
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goto matched;
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}
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}
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if (!fnmatch(m + skiplen, filename + skiplen, 0))
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goto matched;
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if (ps_matched)
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ps_matched++;
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continue;
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matched:
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if (ps_matched)
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*ps_matched = 1;
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return 1;
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}
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return 0;
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}
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static void show_dir_entry(const char *tag, struct dir_entry *ent)
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{
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int len = prefix_len;
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int offset = prefix_offset;
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if (len >= ent->len)
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die("git-ls-files: internal error - directory entry not superset of prefix");
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if (pathspec && !pathspec_match(pathspec, ps_matched, ent->name, len))
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return;
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fputs(tag, stdout);
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write_name_quoted(ent->name + offset, stdout, line_terminator);
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}
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static void show_other_files(struct dir_struct *dir)
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{
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int i;
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/*
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* Skip matching and unmerged entries for the paths,
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* since we want just "others".
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*
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* (Matching entries are normally pruned during
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* the directory tree walk, but will show up for
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* gitlinks because we don't necessarily have
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* dir->show_other_directories set to suppress
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* them).
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*/
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for (i = 0; i < dir->nr; i++) {
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struct dir_entry *ent = dir->entries[i];
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int len, pos;
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struct cache_entry *ce;
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/*
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* Remove the '/' at the end that directory
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* walking adds for directory entries.
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*/
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len = ent->len;
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if (len && ent->name[len-1] == '/')
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len--;
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pos = cache_name_pos(ent->name, len);
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if (0 <= pos)
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continue; /* exact match */
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pos = -pos - 1;
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if (pos < active_nr) {
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ce = active_cache[pos];
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if (ce_namelen(ce) == len &&
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!memcmp(ce->name, ent->name, len))
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continue; /* Yup, this one exists unmerged */
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}
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show_dir_entry(tag_other, ent);
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}
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}
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static void show_killed_files(struct dir_struct *dir)
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{
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int i;
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for (i = 0; i < dir->nr; i++) {
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struct dir_entry *ent = dir->entries[i];
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char *cp, *sp;
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int pos, len, killed = 0;
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for (cp = ent->name; cp - ent->name < ent->len; cp = sp + 1) {
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sp = strchr(cp, '/');
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if (!sp) {
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/* If ent->name is prefix of an entry in the
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* cache, it will be killed.
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*/
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pos = cache_name_pos(ent->name, ent->len);
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if (0 <= pos)
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die("bug in show-killed-files");
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pos = -pos - 1;
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while (pos < active_nr &&
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ce_stage(active_cache[pos]))
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pos++; /* skip unmerged */
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if (active_nr <= pos)
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break;
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/* pos points at a name immediately after
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* ent->name in the cache. Does it expect
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* ent->name to be a directory?
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*/
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len = ce_namelen(active_cache[pos]);
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if ((ent->len < len) &&
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!strncmp(active_cache[pos]->name,
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ent->name, ent->len) &&
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active_cache[pos]->name[ent->len] == '/')
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killed = 1;
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break;
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}
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if (0 <= cache_name_pos(ent->name, sp - ent->name)) {
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/* If any of the leading directories in
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* ent->name is registered in the cache,
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* ent->name will be killed.
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*/
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killed = 1;
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break;
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}
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}
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if (killed)
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show_dir_entry(tag_killed, dir->entries[i]);
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}
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}
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static void show_ce_entry(const char *tag, struct cache_entry *ce)
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{
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int len = prefix_len;
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int offset = prefix_offset;
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if (len >= ce_namelen(ce))
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die("git-ls-files: internal error - cache entry not superset of prefix");
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if (pathspec && !pathspec_match(pathspec, ps_matched, ce->name, len))
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return;
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if (tag && *tag && show_valid_bit &&
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(ce->ce_flags & htons(CE_VALID))) {
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static char alttag[4];
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memcpy(alttag, tag, 3);
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if (isalpha(tag[0]))
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alttag[0] = tolower(tag[0]);
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else if (tag[0] == '?')
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alttag[0] = '!';
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else {
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alttag[0] = 'v';
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alttag[1] = tag[0];
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alttag[2] = ' ';
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alttag[3] = 0;
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}
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tag = alttag;
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}
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if (!show_stage) {
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fputs(tag, stdout);
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} else {
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printf("%s%06o %s %d\t",
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tag,
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ntohl(ce->ce_mode),
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abbrev ? find_unique_abbrev(ce->sha1,abbrev)
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: sha1_to_hex(ce->sha1),
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ce_stage(ce));
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}
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write_name_quoted(ce->name + offset, stdout, line_terminator);
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}
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static void show_files(struct dir_struct *dir, const char *prefix)
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{
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int i;
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/* For cached/deleted files we don't need to even do the readdir */
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if (show_others || show_killed) {
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const char *path = ".", *base = "";
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int baselen = prefix_len;
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if (baselen)
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path = base = prefix;
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read_directory(dir, path, base, baselen, pathspec);
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if (show_others)
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show_other_files(dir);
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if (show_killed)
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show_killed_files(dir);
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}
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if (show_cached | show_stage) {
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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 (excluded(dir, ce->name, ce_to_dtype(ce)) !=
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dir->show_ignored)
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continue;
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if (show_unmerged && !ce_stage(ce))
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continue;
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if (ce->ce_flags & htons(CE_UPDATE))
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continue;
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show_ce_entry(ce_stage(ce) ? tag_unmerged : tag_cached, ce);
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}
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}
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if (show_deleted | show_modified) {
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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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struct stat st;
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int err;
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if (excluded(dir, ce->name, ce_to_dtype(ce)) !=
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dir->show_ignored)
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continue;
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err = lstat(ce->name, &st);
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if (show_deleted && err)
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show_ce_entry(tag_removed, ce);
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if (show_modified && ce_modified(ce, &st, 0))
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show_ce_entry(tag_modified, ce);
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}
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}
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}
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/*
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* Prune the index to only contain stuff starting with "prefix"
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*/
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static void prune_cache(const char *prefix)
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{
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int pos = cache_name_pos(prefix, prefix_len);
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unsigned int first, last;
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if (pos < 0)
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pos = -pos-1;
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memmove(active_cache, active_cache + pos,
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(active_nr - pos) * sizeof(struct cache_entry *));
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active_nr -= pos;
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first = 0;
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last = active_nr;
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while (last > first) {
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int next = (last + first) >> 1;
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struct cache_entry *ce = active_cache[next];
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if (!strncmp(ce->name, prefix, prefix_len)) {
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first = next+1;
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continue;
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}
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last = next;
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}
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active_nr = last;
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}
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static const char *verify_pathspec(const char *prefix)
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{
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const char **p, *n, *prev;
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unsigned long max;
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prev = NULL;
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max = PATH_MAX;
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for (p = pathspec; (n = *p) != NULL; p++) {
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int i, len = 0;
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for (i = 0; i < max; i++) {
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char c = n[i];
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if (prev && prev[i] != c)
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break;
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if (!c || c == '*' || c == '?')
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break;
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if (c == '/')
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len = i+1;
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}
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prev = n;
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if (len < max) {
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max = len;
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if (!max)
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break;
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}
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}
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if (prefix_offset > max || memcmp(prev, prefix, prefix_offset))
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die("git-ls-files: cannot generate relative filenames containing '..'");
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prefix_len = max;
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return max ? xmemdupz(prev, max) : NULL;
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}
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/*
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* Read the tree specified with --with-tree option
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* (typically, HEAD) into stage #1 and then
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* squash them down to stage #0. This is used for
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* --error-unmatch to list and check the path patterns
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* that were given from the command line. We are not
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* going to write this index out.
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*/
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void overlay_tree_on_cache(const char *tree_name, const char *prefix)
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{
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struct tree *tree;
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unsigned char sha1[20];
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const char **match;
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struct cache_entry *last_stage0 = NULL;
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int i;
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if (get_sha1(tree_name, sha1))
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die("tree-ish %s not found.", tree_name);
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tree = parse_tree_indirect(sha1);
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if (!tree)
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die("bad tree-ish %s", tree_name);
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/* Hoist the unmerged entries up to stage #3 to make room */
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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 (!ce_stage(ce))
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continue;
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ce->ce_flags |= htons(CE_STAGEMASK);
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}
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if (prefix) {
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static const char *(matchbuf[2]);
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matchbuf[0] = prefix;
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matchbuf [1] = NULL;
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match = matchbuf;
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} else
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match = NULL;
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if (read_tree(tree, 1, match))
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die("unable to read tree entries %s", tree_name);
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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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switch (ce_stage(ce)) {
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case 0:
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last_stage0 = ce;
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/* fallthru */
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default:
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continue;
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case 1:
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/*
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* If there is stage #0 entry for this, we do not
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* need to show it. We use CE_UPDATE bit to mark
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* such an entry.
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*/
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if (last_stage0 &&
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!strcmp(last_stage0->name, ce->name))
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ce->ce_flags |= htons(CE_UPDATE);
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}
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}
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}
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int report_path_error(const char *ps_matched, const char **pathspec, int prefix_offset)
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{
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/*
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* Make sure all pathspec matched; otherwise it is an error.
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*/
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int num, errors = 0;
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for (num = 0; pathspec[num]; num++) {
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int other, found_dup;
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if (ps_matched[num])
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continue;
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/*
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* The caller might have fed identical pathspec
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* twice. Do not barf on such a mistake.
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*/
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for (found_dup = other = 0;
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!found_dup && pathspec[other];
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other++) {
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if (other == num || !ps_matched[other])
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continue;
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if (!strcmp(pathspec[other], pathspec[num]))
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/*
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* Ok, we have a match already.
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*/
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found_dup = 1;
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}
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if (found_dup)
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continue;
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error("pathspec '%s' did not match any file(s) known to git.",
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pathspec[num] + prefix_offset);
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errors++;
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}
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return errors;
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}
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static const char ls_files_usage[] =
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"git-ls-files [-z] [-t] [-v] (--[cached|deleted|others|stage|unmerged|killed|modified])* "
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"[ --ignored ] [--exclude=<pattern>] [--exclude-from=<file>] "
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"[ --exclude-per-directory=<filename> ] [--exclude-standard] "
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"[--full-name] [--abbrev] [--] [<file>]*";
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int cmd_ls_files(int argc, const char **argv, const char *prefix)
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{
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int i;
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int exc_given = 0, require_work_tree = 0;
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struct dir_struct dir;
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memset(&dir, 0, sizeof(dir));
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if (prefix)
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prefix_offset = strlen(prefix);
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git_config(git_default_config);
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for (i = 1; i < argc; i++) {
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const char *arg = argv[i];
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if (!strcmp(arg, "--")) {
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i++;
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break;
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}
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if (!strcmp(arg, "-z")) {
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line_terminator = 0;
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continue;
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}
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if (!strcmp(arg, "-t") || !strcmp(arg, "-v")) {
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tag_cached = "H ";
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tag_unmerged = "M ";
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tag_removed = "R ";
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tag_modified = "C ";
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tag_other = "? ";
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tag_killed = "K ";
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if (arg[1] == 'v')
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show_valid_bit = 1;
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continue;
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}
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if (!strcmp(arg, "-c") || !strcmp(arg, "--cached")) {
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show_cached = 1;
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continue;
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}
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if (!strcmp(arg, "-d") || !strcmp(arg, "--deleted")) {
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show_deleted = 1;
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continue;
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}
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if (!strcmp(arg, "-m") || !strcmp(arg, "--modified")) {
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show_modified = 1;
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require_work_tree = 1;
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continue;
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}
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if (!strcmp(arg, "-o") || !strcmp(arg, "--others")) {
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show_others = 1;
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require_work_tree = 1;
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continue;
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}
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if (!strcmp(arg, "-i") || !strcmp(arg, "--ignored")) {
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dir.show_ignored = 1;
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require_work_tree = 1;
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continue;
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}
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if (!strcmp(arg, "-s") || !strcmp(arg, "--stage")) {
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show_stage = 1;
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continue;
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}
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if (!strcmp(arg, "-k") || !strcmp(arg, "--killed")) {
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show_killed = 1;
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require_work_tree = 1;
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continue;
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}
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if (!strcmp(arg, "--directory")) {
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dir.show_other_directories = 1;
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continue;
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}
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if (!strcmp(arg, "--no-empty-directory")) {
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dir.hide_empty_directories = 1;
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continue;
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}
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if (!strcmp(arg, "-u") || !strcmp(arg, "--unmerged")) {
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/* There's no point in showing unmerged unless
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* you also show the stage information.
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*/
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show_stage = 1;
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show_unmerged = 1;
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continue;
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}
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if (!strcmp(arg, "-x") && i+1 < argc) {
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exc_given = 1;
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add_exclude(argv[++i], "", 0, &dir.exclude_list[EXC_CMDL]);
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continue;
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}
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if (!prefixcmp(arg, "--exclude=")) {
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exc_given = 1;
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add_exclude(arg+10, "", 0, &dir.exclude_list[EXC_CMDL]);
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continue;
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}
|
|
if (!strcmp(arg, "-X") && i+1 < argc) {
|
|
exc_given = 1;
|
|
add_excludes_from_file(&dir, argv[++i]);
|
|
continue;
|
|
}
|
|
if (!prefixcmp(arg, "--exclude-from=")) {
|
|
exc_given = 1;
|
|
add_excludes_from_file(&dir, arg+15);
|
|
continue;
|
|
}
|
|
if (!prefixcmp(arg, "--exclude-per-directory=")) {
|
|
exc_given = 1;
|
|
dir.exclude_per_dir = arg + 24;
|
|
continue;
|
|
}
|
|
if (!strcmp(arg, "--exclude-standard")) {
|
|
exc_given = 1;
|
|
setup_standard_excludes(&dir);
|
|
continue;
|
|
}
|
|
if (!strcmp(arg, "--full-name")) {
|
|
prefix_offset = 0;
|
|
continue;
|
|
}
|
|
if (!strcmp(arg, "--error-unmatch")) {
|
|
error_unmatch = 1;
|
|
continue;
|
|
}
|
|
if (!prefixcmp(arg, "--with-tree=")) {
|
|
with_tree = arg + 12;
|
|
continue;
|
|
}
|
|
if (!prefixcmp(arg, "--abbrev=")) {
|
|
abbrev = strtoul(arg+9, NULL, 10);
|
|
if (abbrev && abbrev < MINIMUM_ABBREV)
|
|
abbrev = MINIMUM_ABBREV;
|
|
else if (abbrev > 40)
|
|
abbrev = 40;
|
|
continue;
|
|
}
|
|
if (!strcmp(arg, "--abbrev")) {
|
|
abbrev = DEFAULT_ABBREV;
|
|
continue;
|
|
}
|
|
if (*arg == '-')
|
|
usage(ls_files_usage);
|
|
break;
|
|
}
|
|
|
|
if (require_work_tree && !is_inside_work_tree())
|
|
setup_work_tree();
|
|
|
|
pathspec = get_pathspec(prefix, argv + i);
|
|
|
|
/* Verify that the pathspec matches the prefix */
|
|
if (pathspec)
|
|
prefix = verify_pathspec(prefix);
|
|
|
|
/* Treat unmatching pathspec elements as errors */
|
|
if (pathspec && error_unmatch) {
|
|
int num;
|
|
for (num = 0; pathspec[num]; num++)
|
|
;
|
|
ps_matched = xcalloc(1, num);
|
|
}
|
|
|
|
if (dir.show_ignored && !exc_given) {
|
|
fprintf(stderr, "%s: --ignored needs some exclude pattern\n",
|
|
argv[0]);
|
|
exit(1);
|
|
}
|
|
|
|
/* With no flags, we default to showing the cached files */
|
|
if (!(show_stage | show_deleted | show_others | show_unmerged |
|
|
show_killed | show_modified))
|
|
show_cached = 1;
|
|
|
|
read_cache();
|
|
if (prefix)
|
|
prune_cache(prefix);
|
|
if (with_tree) {
|
|
/*
|
|
* Basic sanity check; show-stages and show-unmerged
|
|
* would not make any sense with this option.
|
|
*/
|
|
if (show_stage || show_unmerged)
|
|
die("ls-files --with-tree is incompatible with -s or -u");
|
|
overlay_tree_on_cache(with_tree, prefix);
|
|
}
|
|
show_files(&dir, prefix);
|
|
|
|
if (ps_matched) {
|
|
int bad;
|
|
bad = report_path_error(ps_matched, pathspec, prefix_offset);
|
|
if (bad)
|
|
fprintf(stderr, "Did you forget to 'git add'?\n");
|
|
|
|
return bad ? 1 : 0;
|
|
}
|
|
|
|
return 0;
|
|
}
|