X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=builtin-log.c;h=982d871887a6cd5f3e751a8c650ef95e8332b186;hb=b6936205e73c058784288d21d1937e5bba26b91b;hp=7e5cab15c106f59417804a25d094c94e78d64063;hpb=868227b0d1f3a295ea9afe7a3be3a1fbdff62442;p=git.git

diff --git a/builtin-log.c b/builtin-log.c
index 7e5cab15c..982d87188 100644
--- a/builtin-log.c
+++ b/builtin-log.c
@@ -10,21 +10,37 @@
 #include "revision.h"
 #include "log-tree.h"
 #include "builtin.h"
+#include "tag.h"
+
+static int default_show_root = 1;
 
 /* this is in builtin-diff.c */
 void add_head(struct rev_info *revs);
 
-static void cmd_log_init(int argc, const char **argv, char **envp,
+static void cmd_log_init(int argc, const char **argv, const char *prefix,
 		      struct rev_info *rev)
 {
+	int i;
+
 	rev->abbrev = DEFAULT_ABBREV;
 	rev->commit_format = CMIT_FMT_DEFAULT;
 	rev->verbose_header = 1;
+	rev->show_root_diff = default_show_root;
 	argc = setup_revisions(argc, argv, rev, "HEAD");
 	if (rev->diffopt.pickaxe || rev->diffopt.filter)
 		rev->always_show_header = 0;
-	if (argc > 1)
-		die("unrecognized argument: %s", argv[1]);
+	for (i = 1; i < argc; i++) {
+		const char *arg = argv[i];
+		if (!strncmp(arg, "--encoding=", 11)) {
+			arg += 11;
+			if (strcmp(arg, "none"))
+				git_log_output_encoding = strdup(arg);
+			else
+				git_log_output_encoding = "";
+		}
+		else
+			die("unrecognized argument: %s", arg);
+	}
 }
 
 static int cmd_log_walk(struct rev_info *rev)
@@ -32,38 +48,83 @@ static int cmd_log_walk(struct rev_info *rev)
 	struct commit *commit;
 
 	prepare_revision_walk(rev);
-	setup_pager();
 	while ((commit = get_revision(rev)) != NULL) {
 		log_tree_commit(rev, commit);
-		free(commit->buffer);
-		commit->buffer = NULL;
+		if (!rev->reflog_info) {
+			/* we allow cycles in reflog ancestry */
+			free(commit->buffer);
+			commit->buffer = NULL;
+		}
 		free_commit_list(commit->parents);
 		commit->parents = NULL;
 	}
 	return 0;
 }
 
-int cmd_whatchanged(int argc, const char **argv, char **envp)
+static int git_log_config(const char *var, const char *value)
+{
+	if (!strcmp(var, "log.showroot")) {
+		default_show_root = git_config_bool(var, value);
+		return 0;
+	}
+	return git_diff_ui_config(var, value);
+}
+
+int cmd_whatchanged(int argc, const char **argv, const char *prefix)
 {
 	struct rev_info rev;
 
-	git_config(git_diff_ui_config);
-	init_revisions(&rev);
+	git_config(git_log_config);
+	init_revisions(&rev, prefix);
 	rev.diff = 1;
 	rev.diffopt.recursive = 1;
 	rev.simplify_history = 0;
-	cmd_log_init(argc, argv, envp, &rev);
+	cmd_log_init(argc, argv, prefix, &rev);
 	if (!rev.diffopt.output_format)
 		rev.diffopt.output_format = DIFF_FORMAT_RAW;
 	return cmd_log_walk(&rev);
 }
 
-int cmd_show(int argc, const char **argv, char **envp)
+static int show_object(const unsigned char *sha1, int suppress_header)
+{
+	unsigned long size;
+	char type[20];
+	char *buf = read_sha1_file(sha1, type, &size);
+	int offset = 0;
+
+	if (!buf)
+		return error("Could not read object %s", sha1_to_hex(sha1));
+
+	if (suppress_header)
+		while (offset < size && buf[offset++] != '\n') {
+			int new_offset = offset;
+			while (new_offset < size && buf[new_offset++] != '\n')
+				; /* do nothing */
+			offset = new_offset;
+		}
+
+	if (offset < size)
+		fwrite(buf + offset, size - offset, 1, stdout);
+	free(buf);
+	return 0;
+}
+
+static int show_tree_object(const unsigned char *sha1,
+		const char *base, int baselen,
+		const char *pathname, unsigned mode, int stage)
+{
+	printf("%s%s\n", pathname, S_ISDIR(mode) ? "/" : "");
+	return 0;
+}
+
+int cmd_show(int argc, const char **argv, const char *prefix)
 {
 	struct rev_info rev;
+	struct object_array_entry *objects;
+	int i, count, ret = 0;
 
-	git_config(git_diff_ui_config);
-	init_revisions(&rev);
+	git_config(git_log_config);
+	init_revisions(&rev, prefix);
 	rev.diff = 1;
 	rev.diffopt.recursive = 1;
 	rev.combine_merges = 1;
@@ -71,18 +132,63 @@ int cmd_show(int argc, const char **argv, char **envp)
 	rev.always_show_header = 1;
 	rev.ignore_merges = 0;
 	rev.no_walk = 1;
-	cmd_log_init(argc, argv, envp, &rev);
-	return cmd_log_walk(&rev);
+	cmd_log_init(argc, argv, prefix, &rev);
+
+	count = rev.pending.nr;
+	objects = rev.pending.objects;
+	for (i = 0; i < count && !ret; i++) {
+		struct object *o = objects[i].item;
+		const char *name = objects[i].name;
+		switch (o->type) {
+		case OBJ_BLOB:
+			ret = show_object(o->sha1, 0);
+			break;
+		case OBJ_TAG: {
+			struct tag *t = (struct tag *)o;
+
+			printf("%stag %s%s\n\n",
+					diff_get_color(rev.diffopt.color_diff,
+						DIFF_COMMIT),
+					t->tag,
+					diff_get_color(rev.diffopt.color_diff,
+						DIFF_RESET));
+			ret = show_object(o->sha1, 1);
+			objects[i].item = (struct object *)t->tagged;
+			i--;
+			break;
+		}
+		case OBJ_TREE:
+			printf("%stree %s%s\n\n",
+					diff_get_color(rev.diffopt.color_diff,
+						DIFF_COMMIT),
+					name,
+					diff_get_color(rev.diffopt.color_diff,
+						DIFF_RESET));
+			read_tree_recursive((struct tree *)o, "", 0, 0, NULL,
+					show_tree_object);
+			break;
+		case OBJ_COMMIT:
+			rev.pending.nr = rev.pending.alloc = 0;
+			rev.pending.objects = NULL;
+			add_object_array(o, name, &rev.pending);
+			ret = cmd_log_walk(&rev);
+			break;
+		default:
+			ret = error("Unknown type: %d", o->type);
+		}
+	}
+	free(objects);
+	return ret;
 }
 
-int cmd_log(int argc, const char **argv, char **envp)
+int cmd_log(int argc, const char **argv, const char *prefix)
 {
 	struct rev_info rev;
 
-	git_config(git_diff_ui_config);
-	init_revisions(&rev);
+	git_config(git_log_config);
+	init_revisions(&rev, prefix);
 	rev.always_show_header = 1;
-	cmd_log_init(argc, argv, envp, &rev);
+	cmd_log_init(argc, argv, prefix, &rev);
 	return cmd_log_walk(&rev);
 }
 
@@ -94,21 +200,32 @@ static int istitlechar(char c)
 
 static char *extra_headers = NULL;
 static int extra_headers_size = 0;
+static const char *fmt_patch_suffix = ".patch";
 
 static int git_format_config(const char *var, const char *value)
 {
 	if (!strcmp(var, "format.headers")) {
-		int len = strlen(value);
+		int len;
+
+		if (!value)
+			die("format.headers without value");
+		len = strlen(value);
 		extra_headers_size += len + 1;
-		extra_headers = realloc(extra_headers, extra_headers_size);
+		extra_headers = xrealloc(extra_headers, extra_headers_size);
 		extra_headers[extra_headers_size - len - 1] = 0;
 		strcat(extra_headers, value);
 		return 0;
 	}
-	if (!strcmp(var, "diff.color")) {
+	if (!strcmp(var, "format.suffix")) {
+		if (!value)
+			die("format.suffix without value");
+		fmt_patch_suffix = xstrdup(value);
 		return 0;
 	}
-	return git_diff_ui_config(var, value);
+	if (!strcmp(var, "diff.color") || !strcmp(var, "color.diff")) {
+		return 0;
+	}
+	return git_log_config(var, value);
 }
 
 
@@ -120,9 +237,10 @@ static void reopen_stdout(struct commit *commit, int nr, int keep_subject)
 	char filename[1024];
 	char *sol;
 	int len = 0;
+	int suffix_len = strlen(fmt_patch_suffix) + 10; /* ., NUL and slop */
 
 	if (output_directory) {
-		strlcpy(filename, output_directory, 1010);
+		strlcpy(filename, output_directory, 1000);
 		len = strlen(filename);
 		if (filename[len - 1] != '/')
 			filename[len++] = '/';
@@ -146,7 +264,10 @@ static void reopen_stdout(struct commit *commit, int nr, int keep_subject)
 			}
 		}
 
-		for (j = 0; len < 1024 - 6 && sol[j] && sol[j] != '\n'; j++) {
+		for (j = 0;
+		     len < sizeof(filename) - suffix_len &&
+			     sol[j] && sol[j] != '\n';
+		     j++) {
 			if (istitlechar(sol[j])) {
 				if (space) {
 					filename[len++] = '-';
@@ -162,7 +283,7 @@ static void reopen_stdout(struct commit *commit, int nr, int keep_subject)
 		while (filename[len - 1] == '.' || filename[len - 1] == '-')
 			len--;
 	}
-	strcpy(filename + len, ".txt");
+	strcpy(filename + len, fmt_patch_suffix);
 	fprintf(realstdout, "%s\n", filename);
 	freopen(filename, "w", stdout);
 }
@@ -170,13 +291,16 @@ static void reopen_stdout(struct commit *commit, int nr, int keep_subject)
 static int get_patch_id(struct commit *commit, struct diff_options *options,
 		unsigned char *sha1)
 {
-	diff_tree_sha1(commit->parents->item->object.sha1, commit->object.sha1,
-			"", options);
+	if (commit->parents)
+		diff_tree_sha1(commit->parents->item->object.sha1,
+		               commit->object.sha1, "", options);
+	else
+		diff_root_tree_sha1(commit->object.sha1, "", options);
 	diffcore_std(options);
 	return diff_flush_patch_id(options, sha1);
 }
 
-static void get_patch_ids(struct rev_info *rev, struct diff_options *options)
+static void get_patch_ids(struct rev_info *rev, struct diff_options *options, const char *prefix)
 {
 	struct rev_info check_rev;
 	struct commit *commit;
@@ -201,7 +325,7 @@ static void get_patch_ids(struct rev_info *rev, struct diff_options *options)
 		die("diff_setup_done failed");
 
 	/* given a range a..b get all patch ids for b..a */
-	init_revisions(&check_rev);
+	init_revisions(&check_rev, prefix);
 	o1->flags ^= UNINTERESTING;
 	o2->flags ^= UNINTERESTING;
 	add_pending_object(&check_rev, o1, "o1");
@@ -226,7 +350,19 @@ static void get_patch_ids(struct rev_info *rev, struct diff_options *options)
 	o2->flags = flags2;
 }
 
-int cmd_format_patch(int argc, const char **argv, char **envp)
+static void gen_message_id(char *dest, unsigned int length, char *base)
+{
+	const char *committer = git_committer_info(-1);
+	const char *email_start = strrchr(committer, '<');
+	const char *email_end = strrchr(committer, '>');
+	if(!email_start || !email_end || email_start > email_end - 1)
+		die("Could not extract email from committer identity.");
+	snprintf(dest, length, "%s.%lu.git.%.*s", base,
+		 (unsigned long) time(NULL),
+		 (int)(email_end - email_start - 1), email_start + 1);
+}
+
+int cmd_format_patch(int argc, const char **argv, const char *prefix)
 {
 	struct commit *commit;
 	struct commit **list = NULL;
@@ -237,11 +373,15 @@ int cmd_format_patch(int argc, const char **argv, char **envp)
 	int start_number = -1;
 	int keep_subject = 0;
 	int ignore_if_in_upstream = 0;
+	int thread = 0;
+	const char *in_reply_to = NULL;
 	struct diff_options patch_id_opts;
 	char *add_signoff = NULL;
+	char message_id[1024];
+	char ref_message_id[1024];
 
 	git_config(git_format_config);
-	init_revisions(&rev);
+	init_revisions(&rev, prefix);
 	rev.commit_format = CMIT_FMT_EMAIL;
 	rev.verbose_header = 1;
 	rev.diff = 1;
@@ -289,7 +429,6 @@ int cmd_format_patch(int argc, const char **argv, char **envp)
 			 !strcmp(argv[i], "-s")) {
 			const char *committer;
 			const char *endpos;
-			setup_ident();
 			committer = git_committer_info(1);
 			endpos = strchr(committer, '>');
 			if (!endpos)
@@ -304,6 +443,18 @@ int cmd_format_patch(int argc, const char **argv, char **envp)
 			rev.mime_boundary = argv[i] + 9;
 		else if (!strcmp(argv[i], "--ignore-if-in-upstream"))
 			ignore_if_in_upstream = 1;
+		else if (!strcmp(argv[i], "--thread"))
+			thread = 1;
+		else if (!strncmp(argv[i], "--in-reply-to=", 14))
+			in_reply_to = argv[i] + 14;
+		else if (!strcmp(argv[i], "--in-reply-to")) {
+			i++;
+			if (i == argc)
+				die("Need a Message-Id for --in-reply-to");
+			in_reply_to = argv[i];
+		}
+		else if (!strncmp(argv[i], "--suffix=", 9))
+			fmt_patch_suffix = argv[i] + 9;
 		else
 			argv[j++] = argv[i];
 	}
@@ -319,7 +470,13 @@ int cmd_format_patch(int argc, const char **argv, char **envp)
 		die ("unrecognized argument: %s", argv[1]);
 
 	if (!rev.diffopt.output_format)
-		rev.diffopt.output_format = DIFF_FORMAT_DIFFSTAT | DIFF_FORMAT_PATCH;
+		rev.diffopt.output_format = DIFF_FORMAT_DIFFSTAT | DIFF_FORMAT_SUMMARY | DIFF_FORMAT_PATCH;
+
+	if (!rev.diffopt.text)
+		rev.diffopt.binary = 1;
+
+	if (!output_directory && !use_stdout)
+		output_directory = prefix;
 
 	if (output_directory) {
 		if (use_stdout)
@@ -330,12 +487,17 @@ int cmd_format_patch(int argc, const char **argv, char **envp)
 	}
 
 	if (rev.pending.nr == 1) {
-		rev.pending.objects[0].item->flags |= UNINTERESTING;
-		add_head(&rev);
+		if (rev.max_count < 0) {
+			rev.pending.objects[0].item->flags |= UNINTERESTING;
+			add_head(&rev);
+		}
+		/* Otherwise, it is "format-patch -22 HEAD", and
+		 * get_revision() would return only the specified count.
+		 */
 	}
 
 	if (ignore_if_in_upstream)
-		get_patch_ids(&rev, &patch_id_opts);
+		get_patch_ids(&rev, &patch_id_opts, prefix);
 
 	if (!use_stdout)
 		realstdout = fdopen(dup(1), "w");
@@ -354,17 +516,30 @@ int cmd_format_patch(int argc, const char **argv, char **envp)
 			continue;
 
 		nr++;
-		list = realloc(list, nr * sizeof(list[0]));
+		list = xrealloc(list, nr * sizeof(list[0]));
 		list[nr - 1] = commit;
 	}
 	total = nr;
 	if (numbered)
 		rev.total = total + start_number - 1;
 	rev.add_signoff = add_signoff;
+	rev.ref_message_id = in_reply_to;
 	while (0 <= --nr) {
 		int shown;
 		commit = list[nr];
 		rev.nr = total - nr + (start_number - 1);
+		/* Make the second and subsequent mails replies to the first */
+		if (thread) {
+			if (nr == (total - 2)) {
+				strncpy(ref_message_id, message_id,
+					sizeof(ref_message_id));
+				ref_message_id[sizeof(ref_message_id)-1]='\0';
+				rev.ref_message_id = ref_message_id;
+			}
+			gen_message_id(message_id, sizeof(message_id),
+				       sha1_to_hex(commit->object.sha1));
+			rev.message_id = message_id;
+		}
 		if (!use_stdout)
 			reopen_stdout(commit, rev.nr, keep_subject);
 		shown = log_tree_commit(&rev, commit);
@@ -394,3 +569,109 @@ int cmd_format_patch(int argc, const char **argv, char **envp)
 	return 0;
 }
 
+static int add_pending_commit(const char *arg, struct rev_info *revs, int flags)
+{
+	unsigned char sha1[20];
+	if (get_sha1(arg, sha1) == 0) {
+		struct commit *commit = lookup_commit_reference(sha1);
+		if (commit) {
+			commit->object.flags |= flags;
+			add_pending_object(revs, &commit->object, arg);
+			return 0;
+		}
+	}
+	return -1;
+}
+
+static const char cherry_usage[] =
+"git-cherry [-v] <upstream> [<head>] [<limit>]";
+int cmd_cherry(int argc, const char **argv, const char *prefix)
+{
+	struct rev_info revs;
+	struct diff_options patch_id_opts;
+	struct commit *commit;
+	struct commit_list *list = NULL;
+	const char *upstream;
+	const char *head = "HEAD";
+	const char *limit = NULL;
+	int verbose = 0;
+
+	if (argc > 1 && !strcmp(argv[1], "-v")) {
+		verbose = 1;
+		argc--;
+		argv++;
+	}
+
+	switch (argc) {
+	case 4:
+		limit = argv[3];
+		/* FALLTHROUGH */
+	case 3:
+		head = argv[2];
+		/* FALLTHROUGH */
+	case 2:
+		upstream = argv[1];
+		break;
+	default:
+		usage(cherry_usage);
+	}
+
+	init_revisions(&revs, prefix);
+	revs.diff = 1;
+	revs.combine_merges = 0;
+	revs.ignore_merges = 1;
+	revs.diffopt.recursive = 1;
+
+	if (add_pending_commit(head, &revs, 0))
+		die("Unknown commit %s", head);
+	if (add_pending_commit(upstream, &revs, UNINTERESTING))
+		die("Unknown commit %s", upstream);
+
+	/* Don't say anything if head and upstream are the same. */
+	if (revs.pending.nr == 2) {
+		struct object_array_entry *o = revs.pending.objects;
+		if (hashcmp(o[0].item->sha1, o[1].item->sha1) == 0)
+			return 0;
+	}
+
+	get_patch_ids(&revs, &patch_id_opts, prefix);
+
+	if (limit && add_pending_commit(limit, &revs, UNINTERESTING))
+		die("Unknown commit %s", limit);
+
+	/* reverse the list of commits */
+	prepare_revision_walk(&revs);
+	while ((commit = get_revision(&revs)) != NULL) {
+		/* ignore merges */
+		if (commit->parents && commit->parents->next)
+			continue;
+
+		commit_list_insert(commit, &list);
+	}
+
+	while (list) {
+		unsigned char sha1[20];
+		char sign = '+';
+
+		commit = list->item;
+		if (!get_patch_id(commit, &patch_id_opts, sha1) &&
+		    lookup_object(sha1))
+			sign = '-';
+
+		if (verbose) {
+			static char buf[16384];
+			pretty_print_commit(CMIT_FMT_ONELINE, commit, ~0,
+			                    buf, sizeof(buf), 0, NULL, NULL, 0);
+			printf("%c %s %s\n", sign,
+			       sha1_to_hex(commit->object.sha1), buf);
+		}
+		else {
+			printf("%c %s\n", sign,
+			       sha1_to_hex(commit->object.sha1));
+		}
+
+		list = list->next;
+	}
+
+	return 0;
+}