diff options
Diffstat (limited to 'builtin-ls-files.c')
| -rw-r--r-- | builtin-ls-files.c | 596 |
1 files changed, 596 insertions, 0 deletions
diff --git a/builtin-ls-files.c b/builtin-ls-files.c new file mode 100644 index 0000000..f72eb85 --- /dev/null +++ b/builtin-ls-files.c @@ -0,0 +1,596 @@ +/* + * This merges the file listing in the directory cache index + * with the actual working directory list, and shows different + * combinations of the two. + * + * Copyright (C) Linus Torvalds, 2005 + */ +#include "cache.h" +#include "quote.h" +#include "dir.h" +#include "builtin.h" +#include "tree.h" + +static int abbrev; +static int show_deleted; +static int show_cached; +static int show_others; +static int show_stage; +static int show_unmerged; +static int show_modified; +static int show_killed; +static int show_valid_bit; +static int line_terminator = '\n'; + +static int prefix_len; +static int prefix_offset; +static const char **pathspec; +static int error_unmatch; +static char *ps_matched; +static const char *with_tree; + +static const char *tag_cached = ""; +static const char *tag_unmerged = ""; +static const char *tag_removed = ""; +static const char *tag_other = ""; +static const char *tag_killed = ""; +static const char *tag_modified = ""; + + +/* + * Match a pathspec against a filename. The first "skiplen" characters + * are the common prefix + */ +int pathspec_match(const char **spec, char *ps_matched, + const char *filename, int skiplen) +{ + const char *m; + + while ((m = *spec++) != NULL) { + int matchlen = strlen(m + skiplen); + + if (!matchlen) + goto matched; + if (!strncmp(m + skiplen, filename + skiplen, matchlen)) { + if (m[skiplen + matchlen - 1] == '/') + goto matched; + switch (filename[skiplen + matchlen]) { + case '/': case '\0': + goto matched; + } + } + if (!fnmatch(m + skiplen, filename + skiplen, 0)) + goto matched; + if (ps_matched) + ps_matched++; + continue; + matched: + if (ps_matched) + *ps_matched = 1; + return 1; + } + return 0; +} + +static void show_dir_entry(const char *tag, struct dir_entry *ent) +{ + int len = prefix_len; + int offset = prefix_offset; + + if (len >= ent->len) + die("git ls-files: internal error - directory entry not superset of prefix"); + + if (pathspec && !pathspec_match(pathspec, ps_matched, ent->name, len)) + return; + + fputs(tag, stdout); + write_name_quoted(ent->name + offset, stdout, line_terminator); +} + +static void show_other_files(struct dir_struct *dir) +{ + int i; + + for (i = 0; i < dir->nr; i++) { + struct dir_entry *ent = dir->entries[i]; + if (!cache_name_is_other(ent->name, ent->len)) + continue; + show_dir_entry(tag_other, ent); + } +} + +static void show_killed_files(struct dir_struct *dir) +{ + int i; + for (i = 0; i < dir->nr; i++) { + struct dir_entry *ent = dir->entries[i]; + char *cp, *sp; + int pos, len, killed = 0; + + for (cp = ent->name; cp - ent->name < ent->len; cp = sp + 1) { + sp = strchr(cp, '/'); + if (!sp) { + /* If ent->name is prefix of an entry in the + * cache, it will be killed. + */ + pos = cache_name_pos(ent->name, ent->len); + if (0 <= pos) + die("bug in show-killed-files"); + pos = -pos - 1; + while (pos < active_nr && + ce_stage(active_cache[pos])) + pos++; /* skip unmerged */ + if (active_nr <= pos) + break; + /* pos points at a name immediately after + * ent->name in the cache. Does it expect + * ent->name to be a directory? + */ + len = ce_namelen(active_cache[pos]); + if ((ent->len < len) && + !strncmp(active_cache[pos]->name, + ent->name, ent->len) && + active_cache[pos]->name[ent->len] == '/') + killed = 1; + break; + } + if (0 <= cache_name_pos(ent->name, sp - ent->name)) { + /* If any of the leading directories in + * ent->name is registered in the cache, + * ent->name will be killed. + */ + killed = 1; + break; + } + } + if (killed) + show_dir_entry(tag_killed, dir->entries[i]); + } +} + +static void show_ce_entry(const char *tag, struct cache_entry *ce) +{ + int len = prefix_len; + int offset = prefix_offset; + + if (len >= ce_namelen(ce)) + die("git ls-files: internal error - cache entry not superset of prefix"); + + if (pathspec && !pathspec_match(pathspec, ps_matched, ce->name, len)) + return; + + if (tag && *tag && show_valid_bit && + (ce->ce_flags & CE_VALID)) { + static char alttag[4]; + memcpy(alttag, tag, 3); + if (isalpha(tag[0])) + alttag[0] = tolower(tag[0]); + else if (tag[0] == '?') + alttag[0] = '!'; + else { + alttag[0] = 'v'; + alttag[1] = tag[0]; + alttag[2] = ' '; + alttag[3] = 0; + } + tag = alttag; + } + + if (!show_stage) { + fputs(tag, stdout); + } else { + printf("%s%06o %s %d\t", + tag, + ce->ce_mode, + abbrev ? find_unique_abbrev(ce->sha1,abbrev) + : sha1_to_hex(ce->sha1), + ce_stage(ce)); + } + write_name_quoted(ce->name + offset, stdout, line_terminator); +} + +static void show_files(struct dir_struct *dir, const char *prefix) +{ + int i; + + /* For cached/deleted files we don't need to even do the readdir */ + if (show_others || show_killed) { + const char *path = ".", *base = ""; + int baselen = prefix_len; + + if (baselen) + path = base = prefix; + read_directory(dir, path, base, baselen, pathspec); + if (show_others) + show_other_files(dir); + if (show_killed) + show_killed_files(dir); + } + if (show_cached | show_stage) { + for (i = 0; i < active_nr; i++) { + struct cache_entry *ce = active_cache[i]; + int dtype = ce_to_dtype(ce); + if (excluded(dir, ce->name, &dtype) != dir->show_ignored) + continue; + if (show_unmerged && !ce_stage(ce)) + continue; + if (ce->ce_flags & CE_UPDATE) + continue; + show_ce_entry(ce_stage(ce) ? tag_unmerged : tag_cached, ce); + } + } + if (show_deleted | show_modified) { + for (i = 0; i < active_nr; i++) { + struct cache_entry *ce = active_cache[i]; + struct stat st; + int err; + int dtype = ce_to_dtype(ce); + if (excluded(dir, ce->name, &dtype) != dir->show_ignored) + continue; + if (ce->ce_flags & CE_UPDATE) + continue; + err = lstat(ce->name, &st); + if (show_deleted && err) + show_ce_entry(tag_removed, ce); + if (show_modified && ce_modified(ce, &st, 0)) + show_ce_entry(tag_modified, ce); + } + } +} + +/* + * Prune the index to only contain stuff starting with "prefix" + */ +static void prune_cache(const char *prefix) +{ + int pos = cache_name_pos(prefix, prefix_len); + unsigned int first, last; + + if (pos < 0) + pos = -pos-1; + memmove(active_cache, active_cache + pos, + (active_nr - pos) * sizeof(struct cache_entry *)); + active_nr -= pos; + first = 0; + last = active_nr; + while (last > first) { + int next = (last + first) >> 1; + struct cache_entry *ce = active_cache[next]; + if (!strncmp(ce->name, prefix, prefix_len)) { + first = next+1; + continue; + } + last = next; + } + active_nr = last; +} + +static const char *verify_pathspec(const char *prefix) +{ + const char **p, *n, *prev; + unsigned long max; + + prev = NULL; + max = PATH_MAX; + for (p = pathspec; (n = *p) != NULL; p++) { + int i, len = 0; + for (i = 0; i < max; i++) { + char c = n[i]; + if (prev && prev[i] != c) + break; + if (!c || c == '*' || c == '?') + break; + if (c == '/') + len = i+1; + } + prev = n; + if (len < max) { + max = len; + if (!max) + break; + } + } + + if (prefix_offset > max || memcmp(prev, prefix, prefix_offset)) + die("git ls-files: cannot generate relative filenames containing '..'"); + + prefix_len = max; + return max ? xmemdupz(prev, max) : NULL; +} + +/* + * Read the tree specified with --with-tree option + * (typically, HEAD) into stage #1 and then + * squash them down to stage #0. This is used for + * --error-unmatch to list and check the path patterns + * that were given from the command line. We are not + * going to write this index out. + */ +void overlay_tree_on_cache(const char *tree_name, const char *prefix) +{ + struct tree *tree; + unsigned char sha1[20]; + const char **match; + struct cache_entry *last_stage0 = NULL; + int i; + + if (get_sha1(tree_name, sha1)) + die("tree-ish %s not found.", tree_name); + tree = parse_tree_indirect(sha1); + if (!tree) + die("bad tree-ish %s", tree_name); + + /* Hoist the unmerged entries up to stage #3 to make room */ + for (i = 0; i < active_nr; i++) { + struct cache_entry *ce = active_cache[i]; + if (!ce_stage(ce)) + continue; + ce->ce_flags |= CE_STAGEMASK; + } + + if (prefix) { + static const char *(matchbuf[2]); + matchbuf[0] = prefix; + matchbuf[1] = NULL; + match = matchbuf; + } else + match = NULL; + if (read_tree(tree, 1, match)) + die("unable to read tree entries %s", tree_name); + + for (i = 0; i < active_nr; i++) { + struct cache_entry *ce = active_cache[i]; + switch (ce_stage(ce)) { + case 0: + last_stage0 = ce; + /* fallthru */ + default: + continue; + case 1: + /* + * If there is stage #0 entry for this, we do not + * need to show it. We use CE_UPDATE bit to mark + * such an entry. + */ + if (last_stage0 && + !strcmp(last_stage0->name, ce->name)) + ce->ce_flags |= CE_UPDATE; + } + } +} + +int report_path_error(const char *ps_matched, const char **pathspec, int prefix_offset) +{ + /* + * Make sure all pathspec matched; otherwise it is an error. + */ + int num, errors = 0; + for (num = 0; pathspec[num]; num++) { + int other, found_dup; + + if (ps_matched[num]) + continue; + /* + * The caller might have fed identical pathspec + * twice. Do not barf on such a mistake. + */ + for (found_dup = other = 0; + !found_dup && pathspec[other]; + other++) { + if (other == num || !ps_matched[other]) + continue; + if (!strcmp(pathspec[other], pathspec[num])) + /* + * Ok, we have a match already. + */ + found_dup = 1; + } + if (found_dup) + continue; + + error("pathspec '%s' did not match any file(s) known to git.", + pathspec[num] + prefix_offset); + errors++; + } + return errors; +} + +static const char ls_files_usage[] = + "git ls-files [-z] [-t] [-v] (--[cached|deleted|others|stage|unmerged|killed|modified])* " + "[ --ignored ] [--exclude=<pattern>] [--exclude-from=<file>] " + "[ --exclude-per-directory=<filename> ] [--exclude-standard] " + "[--full-name] [--abbrev] [--] [<file>]*"; + +int cmd_ls_files(int argc, const char **argv, const char *prefix) +{ + int i; + int exc_given = 0, require_work_tree = 0; + struct dir_struct dir; + + memset(&dir, 0, sizeof(dir)); + if (prefix) + prefix_offset = strlen(prefix); + git_config(git_default_config, NULL); + + for (i = 1; i < argc; i++) { + const char *arg = argv[i]; + + if (!strcmp(arg, "--")) { + i++; + break; + } + if (!strcmp(arg, "-z")) { + line_terminator = 0; + continue; + } + if (!strcmp(arg, "-t") || !strcmp(arg, "-v")) { + tag_cached = "H "; + tag_unmerged = "M "; + tag_removed = "R "; + tag_modified = "C "; + tag_other = "? "; + tag_killed = "K "; + if (arg[1] == 'v') + show_valid_bit = 1; + continue; + } + if (!strcmp(arg, "-c") || !strcmp(arg, "--cached")) { + show_cached = 1; + continue; + } + if (!strcmp(arg, "-d") || !strcmp(arg, "--deleted")) { + show_deleted = 1; + continue; + } + if (!strcmp(arg, "-m") || !strcmp(arg, "--modified")) { + show_modified = 1; + require_work_tree = 1; + continue; + } + if (!strcmp(arg, "-o") || !strcmp(arg, "--others")) { + show_others = 1; + require_work_tree = 1; + continue; + } + if (!strcmp(arg, "-i") || !strcmp(arg, "--ignored")) { + dir.show_ignored = 1; + require_work_tree = 1; + continue; + } + if (!strcmp(arg, "-s") || !strcmp(arg, "--stage")) { + show_stage = 1; + continue; + } + if (!strcmp(arg, "-k") || !strcmp(arg, "--killed")) { + show_killed = 1; + require_work_tree = 1; + continue; + } + if (!strcmp(arg, "--directory")) { + dir.show_other_directories = 1; + continue; + } + if (!strcmp(arg, "--no-empty-directory")) { + dir.hide_empty_directories = 1; + continue; + } + if (!strcmp(arg, "-u") || !strcmp(arg, "--unmerged")) { + /* There's no point in showing unmerged unless + * you also show the stage information. + */ + show_stage = 1; + show_unmerged = 1; + continue; + } + if (!strcmp(arg, "-x") && i+1 < argc) { + exc_given = 1; + add_exclude(argv[++i], "", 0, &dir.exclude_list[EXC_CMDL]); + continue; + } + if (!prefixcmp(arg, "--exclude=")) { + exc_given = 1; + add_exclude(arg+10, "", 0, &dir.exclude_list[EXC_CMDL]); + continue; + } + 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; +} |