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https://github.com/git/git
synced 2024-10-30 04:01:21 +00:00
9fc42d6091
The way things are set up, you can now pass a "pathspec" to the "read_directory()" function. If you pass NULL, it acts exactly like it used to do (read everything). If you pass a non-NULL pointer, it will simplify it into a "these are the prefixes without any special characters", and stop any readdir() early if the path in question doesn't match any of the prefixes. NOTE! This does *not* obviate the need for the caller to do the *exact* pathspec match later. It's a first-level filter on "read_directory()", but it does not do the full pathspec thing. Maybe it should. But in the meantime, builtin-add.c really does need to do first read_directory(dir, .., pathspec); if (pathspec) prune_directory(dir, pathspec, baselen); ie the "prune_directory()" part will do the *exact* pathspec pruning, while the "read_directory()" will use the pathspec just to do some quick high-level pruning of the directories it will recurse into. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
217 lines
4.8 KiB
C
217 lines
4.8 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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static const char builtin_add_usage[] =
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"git-add [-n] [-v] [-f] [--interactive | -i] [--] <filepattern>...";
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static const char *excludes_file;
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static void 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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for (i = 0; i < specs; i++) {
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struct stat st;
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const char *match;
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if (seen[i])
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continue;
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match = pathspec[i];
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if (!match[0])
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continue;
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/* Existing file? We must have ignored it */
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if (!lstat(match, &st)) {
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struct dir_entry *ent;
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ent = dir_add_name(dir, match, strlen(match));
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ent->ignored = 1;
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if (S_ISDIR(st.st_mode))
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ent->ignored_dir = 1;
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continue;
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}
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die("pathspec '%s' did not match any files", match);
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}
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}
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static void fill_directory(struct dir_struct *dir, const char **pathspec)
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{
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const char *path, *base;
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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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dir->exclude_per_dir = ".gitignore";
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path = git_path("info/exclude");
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if (!access(path, R_OK))
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add_excludes_from_file(dir, path);
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if (!access(excludes_file, R_OK))
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add_excludes_from_file(dir, excludes_file);
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/*
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* Calculate common prefix for the pathspec, and
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* use that to optimize the directory walk
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*/
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baselen = common_prefix(pathspec);
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path = ".";
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base = "";
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if (baselen) {
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char *common = xmalloc(baselen + 1);
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memcpy(common, *pathspec, baselen);
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common[baselen] = 0;
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path = base = common;
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}
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/* Read the directory and prune it */
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read_directory(dir, path, base, baselen, pathspec);
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if (pathspec)
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prune_directory(dir, pathspec, baselen);
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}
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static int git_add_config(const char *var, const char *value)
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{
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if (!strcmp(var, "core.excludesfile")) {
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if (!value)
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die("core.excludesfile without value");
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excludes_file = xstrdup(value);
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return 0;
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}
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return git_default_config(var, value);
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}
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static struct lock_file lock_file;
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static const char ignore_warning[] =
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"The following paths are ignored by one of your .gitignore files:\n";
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int cmd_add(int argc, const char **argv, const char *prefix)
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{
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int i, newfd;
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int verbose = 0, show_only = 0, ignored_too = 0;
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const char **pathspec;
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struct dir_struct dir;
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int add_interactive = 0;
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for (i = 1; i < argc; i++) {
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if (!strcmp("--interactive", argv[i]) ||
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!strcmp("-i", argv[i]))
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add_interactive++;
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}
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if (add_interactive) {
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const char *args[] = { "add--interactive", NULL };
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if (add_interactive != 1 || argc != 2)
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die("add --interactive does not take any parameters");
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execv_git_cmd(args);
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exit(1);
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}
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git_config(git_add_config);
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newfd = hold_lock_file_for_update(&lock_file, get_index_file(), 1);
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for (i = 1; i < argc; i++) {
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const char *arg = argv[i];
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if (arg[0] != '-')
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break;
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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, "-n")) {
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show_only = 1;
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continue;
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}
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if (!strcmp(arg, "-f")) {
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ignored_too = 1;
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continue;
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}
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if (!strcmp(arg, "-v")) {
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verbose = 1;
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continue;
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}
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usage(builtin_add_usage);
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}
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if (argc <= i) {
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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 = get_pathspec(prefix, argv + i);
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fill_directory(&dir, pathspec);
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if (show_only) {
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const char *sep = "", *eof = "";
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for (i = 0; i < dir.nr; i++) {
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if (!ignored_too && dir.entries[i]->ignored)
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continue;
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printf("%s%s", sep, dir.entries[i]->name);
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sep = " ";
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eof = "\n";
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}
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fputs(eof, stdout);
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return 0;
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}
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if (read_cache() < 0)
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die("index file corrupt");
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if (!ignored_too) {
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int has_ignored = 0;
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for (i = 0; i < dir.nr; i++)
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if (dir.entries[i]->ignored)
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has_ignored = 1;
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if (has_ignored) {
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fprintf(stderr, ignore_warning);
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for (i = 0; i < dir.nr; i++) {
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if (!dir.entries[i]->ignored)
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continue;
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fprintf(stderr, "%s", dir.entries[i]->name);
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if (dir.entries[i]->ignored_dir)
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fprintf(stderr, " (directory)");
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fputc('\n', stderr);
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}
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fprintf(stderr,
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"Use -f if you really want to add them.\n");
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exit(1);
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}
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}
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for (i = 0; i < dir.nr; i++)
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add_file_to_index(dir.entries[i]->name, verbose);
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if (active_cache_changed) {
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if (write_cache(newfd, active_cache, active_nr) ||
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close(newfd) || commit_lock_file(&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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