1 files changed, 267 insertions, 0 deletions
diff --git a/builtin-add.c b/builtin-add.c
new file mode 100644
index 0000000..5c29cc2
--- /dev/null
+++ b/builtin-add.c
@@ -0,0 +1,267 @@
+/*
+ * "git add" builtin command
+ *
+ * Copyright (C) 2006 Linus Torvalds
+ */
+#include "cache.h"
+#include "builtin.h"
+#include "dir.h"
+#include "exec_cmd.h"
+#include "cache-tree.h"
+#include "diff.h"
+#include "diffcore.h"
+#include "commit.h"
+#include "revision.h"
+#include "run-command.h"
+#include "parse-options.h"
+
+static const char * const builtin_add_usage[] = {
+	"git-add [options] [--] <filepattern>...",
+	NULL
+};
+static int patch_interactive = 0, add_interactive = 0;
+static int take_worktree_changes;
+
+static void prune_directory(struct dir_struct *dir, const char **pathspec, int prefix)
+{
+	char *seen;
+	int i, specs;
+	struct dir_entry **src, **dst;
+
+	for (specs = 0; pathspec[specs];  specs++)
+		/* nothing */;
+	seen = xcalloc(specs, 1);
+
+	src = dst = dir->entries;
+	i = dir->nr;
+	while (--i >= 0) {
+		struct dir_entry *entry = *src++;
+		if (match_pathspec(pathspec, entry->name, entry->len,
+				   prefix, seen))
+			*dst++ = entry;
+	}
+	dir->nr = dst - dir->entries;
+
+	for (i = 0; i < specs; i++) {
+		if (!seen[i] && !file_exists(pathspec[i]))
+			die("pathspec '%s' did not match any files",
+					pathspec[i]);
+	}
+        free(seen);
+}
+
+static void fill_directory(struct dir_struct *dir, const char **pathspec,
+		int ignored_too)
+{
+	const char *path, *base;
+	int baselen;
+
+	/* Set up the default git porcelain excludes */
+	memset(dir, 0, sizeof(*dir));
+	if (!ignored_too) {
+		dir->collect_ignored = 1;
+		setup_standard_excludes(dir);
+	}
+
+	/*
+	 * Calculate common prefix for the pathspec, and
+	 * use that to optimize the directory walk
+	 */
+	baselen = common_prefix(pathspec);
+	path = ".";
+	base = "";
+	if (baselen)
+		path = base = xmemdupz(*pathspec, baselen);
+
+	/* Read the directory and prune it */
+	read_directory(dir, path, base, baselen, pathspec);
+	if (pathspec)
+		prune_directory(dir, pathspec, baselen);
+}
+
+static void update_callback(struct diff_queue_struct *q,
+			    struct diff_options *opt, void *cbdata)
+{
+	int i, verbose;
+
+	verbose = *((int *)cbdata);
+	for (i = 0; i < q->nr; i++) {
+		struct diff_filepair *p = q->queue[i];
+		const char *path = p->one->path;
+		switch (p->status) {
+		default:
+			die("unexpected diff status %c", p->status);
+		case DIFF_STATUS_UNMERGED:
+		case DIFF_STATUS_MODIFIED:
+		case DIFF_STATUS_TYPE_CHANGED:
+			add_file_to_cache(path, verbose);
+			break;
+		case DIFF_STATUS_DELETED:
+			remove_file_from_cache(path);
+			if (verbose)
+				printf("remove '%s'\n", path);
+			break;
+		}
+	}
+}
+
+void add_files_to_cache(int verbose, const char *prefix, const char **pathspec)
+{
+	struct rev_info rev;
+	init_revisions(&rev, prefix);
+	setup_revisions(0, NULL, &rev, NULL);
+	rev.prune_data = pathspec;
+	rev.diffopt.output_format = DIFF_FORMAT_CALLBACK;
+	rev.diffopt.format_callback = update_callback;
+	rev.diffopt.format_callback_data = &verbose;
+	run_diff_files(&rev, DIFF_RACY_IS_MODIFIED);
+}
+
+static void refresh(int verbose, const char **pathspec)
+{
+	char *seen;
+	int i, specs;
+
+	for (specs = 0; pathspec[specs];  specs++)
+		/* nothing */;
+	seen = xcalloc(specs, 1);
+	if (read_cache() < 0)
+		die("index file corrupt");
+	refresh_index(&the_index, verbose ? 0 : REFRESH_QUIET, pathspec, seen);
+	for (i = 0; i < specs; i++) {
+		if (!seen[i])
+			die("pathspec '%s' did not match any files", pathspec[i]);
+	}
+        free(seen);
+}
+
+static const char **validate_pathspec(int argc, const char **argv, const char *prefix)
+{
+	const char **pathspec = get_pathspec(prefix, argv);
+
+	return pathspec;
+}
+
+int interactive_add(int argc, const char **argv, const char *prefix)
+{
+	int status, ac;
+	const char **args;
+	const char **pathspec = NULL;
+
+	if (argc) {
+		pathspec = validate_pathspec(argc, argv, prefix);
+		if (!pathspec)
+			return -1;
+	}
+
+	args = xcalloc(sizeof(const char *), (argc + 4));
+	ac = 0;
+	args[ac++] = "add--interactive";
+	if (patch_interactive)
+		args[ac++] = "--patch";
+	args[ac++] = "--";
+	if (argc) {
+		memcpy(&(args[ac]), pathspec, sizeof(const char *) * argc);
+		ac += argc;
+	}
+	args[ac] = NULL;
+
+	status = run_command_v_opt(args, RUN_GIT_CMD);
+	free(args);
+	return status;
+}
+
+static struct lock_file lock_file;
+
+static const char ignore_error[] =
+"The following paths are ignored by one of your .gitignore files:\n";
+
+static int verbose = 0, show_only = 0, ignored_too = 0, refresh_only = 0;
+
+static struct option builtin_add_options[] = {
+	OPT__DRY_RUN(&show_only),
+	OPT__VERBOSE(&verbose),
+	OPT_GROUP(""),
+	OPT_BOOLEAN('i', "interactive", &add_interactive, "interactive picking"),
+	OPT_BOOLEAN('p', "patch", &patch_interactive, "interactive patching"),
+	OPT_BOOLEAN('f', NULL, &ignored_too, "allow adding otherwise ignored files"),
+	OPT_BOOLEAN('u', NULL, &take_worktree_changes, "update tracked files"),
+	OPT_BOOLEAN( 0 , "refresh", &refresh_only, "don't add, only refresh the index"),
+	OPT_END(),
+};
+
+int cmd_add(int argc, const char **argv, const char *prefix)
+{
+	int i, newfd;
+	const char **pathspec;
+	struct dir_struct dir;
+
+	argc = parse_options(argc, argv, builtin_add_options,
+			  builtin_add_usage, 0);
+	if (patch_interactive)
+		add_interactive = 1;
+	if (add_interactive)
+		exit(interactive_add(argc, argv, prefix));
+
+	git_config(git_default_config);
+
+	newfd = hold_locked_index(&lock_file, 1);
+
+	if (take_worktree_changes) {
+		const char **pathspec;
+		if (read_cache() < 0)
+			die("index file corrupt");
+		pathspec = get_pathspec(prefix, argv);
+		add_files_to_cache(verbose, prefix, pathspec);
+		goto finish;
+	}
+
+	if (argc == 0) {
+		fprintf(stderr, "Nothing specified, nothing added.\n");
+		fprintf(stderr, "Maybe you wanted to say 'git add .'?\n");
+		return 0;
+	}
+	pathspec = get_pathspec(prefix, argv);
+
+	if (refresh_only) {
+		refresh(verbose, pathspec);
+		goto finish;
+	}
+
+	fill_directory(&dir, pathspec, ignored_too);
+
+	if (show_only) {
+		const char *sep = "", *eof = "";
+		for (i = 0; i < dir.nr; i++) {
+			printf("%s%s", sep, dir.entries[i]->name);
+			sep = " ";
+			eof = "\n";
+		}
+		fputs(eof, stdout);
+		return 0;
+	}
+
+	if (read_cache() < 0)
+		die("index file corrupt");
+
+	if (dir.ignored_nr) {
+		fprintf(stderr, ignore_error);
+		for (i = 0; i < dir.ignored_nr; i++) {
+			fprintf(stderr, "%s\n", dir.ignored[i]->name);
+		}
+		fprintf(stderr, "Use -f if you really want to add them.\n");
+		die("no files added");
+	}
+
+	for (i = 0; i < dir.nr; i++)
+		add_file_to_cache(dir.entries[i]->name, verbose);
+
+ finish:
+	if (active_cache_changed) {
+		if (write_cache(newfd, active_cache, active_nr) ||
+		    close(newfd) || commit_locked_index(&lock_file))
+			die("Unable to write new index file");
+	}
+
+	return 0;
+}