1 files changed, 102 insertions, 68 deletions

diff --git a/builtin/log.c b/builtin/log.c
index 8eef94f335..55d20cc2d8 100644
--- a/builtin/log.c
+++ b/builtin/log.c
@@ -33,6 +33,7 @@ static const char *default_date_mode = NULL;
 static int default_abbrev_commit;
 static int default_show_root = 1;
 static int default_follow;
+static int default_show_signature;
 static int decoration_style;
 static int decoration_given;
 static int use_mailmap_config;
@@ -119,6 +120,7 @@ static void cmd_log_init_defaults(struct rev_info *rev)
 	rev->abbrev_commit = default_abbrev_commit;
 	rev->show_root_diff = default_show_root;
 	rev->subject_prefix = fmt_patch_subject_prefix;
+	rev->show_signature = default_show_signature;
 	DIFF_OPT_SET(&rev->diffopt, ALLOW_TEXTCONV);
 
 	if (default_date_mode)
@@ -236,16 +238,17 @@ static void show_early_header(struct rev_info *rev, const char *stage, int nr)
 		if (rev->commit_format != CMIT_FMT_ONELINE)
 			putchar(rev->diffopt.line_termination);
 	}
-	printf(_("Final output: %d %s\n"), nr, stage);
+	fprintf(rev->diffopt.file, _("Final output: %d %s\n"), nr, stage);
 }
 
 static struct itimerval early_output_timer;
 
 static void log_show_early(struct rev_info *revs, struct commit_list *list)
 {
-	int i = revs->early_output;
+	int i = revs->early_output, close_file = revs->diffopt.close_file;
 	int show_header = 1;
 
+	revs->diffopt.close_file = 0;
 	sort_in_topological_order(&list, revs->sort_order);
 	while (list && i) {
 		struct commit *commit = list->item;
@@ -262,14 +265,19 @@ static void log_show_early(struct rev_info *revs, struct commit_list *list)
 		case commit_ignore:
 			break;
 		case commit_error:
+			if (close_file)
+				fclose(revs->diffopt.file);
 			return;
 		}
 		list = list->next;
 	}
 
 	/* Did we already get enough commits for the early output? */
-	if (!i)
+	if (!i) {
+		if (close_file)
+			fclose(revs->diffopt.file);
 		return;
+	}
 
 	/*
 	 * ..if no, then repeat it twice a second until we
@@ -331,7 +339,7 @@ static int cmd_log_walk(struct rev_info *rev)
 {
 	struct commit *commit;
 	int saved_nrl = 0;
-	int saved_dcctc = 0;
+	int saved_dcctc = 0, close_file = rev->diffopt.close_file;
 
 	if (rev->early_output)
 		setup_early_output(rev);
@@ -347,6 +355,7 @@ static int cmd_log_walk(struct rev_info *rev)
 	 * and HAS_CHANGES being accumulated in rev->diffopt, so be careful to
 	 * retain that state information if replacing rev->diffopt in this loop
 	 */
+	rev->diffopt.close_file = 0;
 	while ((commit = get_revision(rev)) != NULL) {
 		if (!log_tree_commit(rev, commit) && rev->max_count >= 0)
 			/*
@@ -367,6 +376,8 @@ static int cmd_log_walk(struct rev_info *rev)
 	}
 	rev->diffopt.degraded_cc_to_c = saved_dcctc;
 	rev->diffopt.needed_rename_limit = saved_nrl;
+	if (close_file)
+		fclose(rev->diffopt.file);
 
 	if (rev->diffopt.output_format & DIFF_FORMAT_CHECKDIFF &&
 	    DIFF_OPT_TST(&rev->diffopt, CHECK_FAILED)) {
@@ -409,6 +420,10 @@ static int git_log_config(const char *var, const char *value, void *cb)
 		use_mailmap_config = git_config_bool(var, value);
 		return 0;
 	}
+	if (!strcmp(var, "log.showsignature")) {
+		default_show_signature = git_config_bool(var, value);
+		return 0;
+	}
 
 	if (grep_config(var, value, cb) < 0)
 		return -1;
@@ -445,27 +460,27 @@ static void show_tagger(char *buf, int len, struct rev_info *rev)
 	pp.fmt = rev->commit_format;
 	pp.date_mode = rev->date_mode;
 	pp_user_info(&pp, "Tagger", &out, buf, get_log_output_encoding());
-	printf("%s", out.buf);
+	fprintf(rev->diffopt.file, "%s", out.buf);
 	strbuf_release(&out);
 }
 
-static int show_blob_object(const unsigned char *sha1, struct rev_info *rev, const char *obj_name)
+static int show_blob_object(const struct object_id *oid, struct rev_info *rev, const char *obj_name)
 {
-	unsigned char sha1c[20];
+	struct object_id oidc;
 	struct object_context obj_context;
 	char *buf;
 	unsigned long size;
 
-	fflush(stdout);
+	fflush(rev->diffopt.file);
 	if (!DIFF_OPT_TOUCHED(&rev->diffopt, ALLOW_TEXTCONV) ||
 	    !DIFF_OPT_TST(&rev->diffopt, ALLOW_TEXTCONV))
-		return stream_blob_to_fd(1, sha1, NULL, 0);
+		return stream_blob_to_fd(1, oid, NULL, 0);
 
-	if (get_sha1_with_context(obj_name, 0, sha1c, &obj_context))
+	if (get_sha1_with_context(obj_name, 0, oidc.hash, &obj_context))
 		die(_("Not a valid object name %s"), obj_name);
 	if (!obj_context.path[0] ||
-	    !textconv_object(obj_context.path, obj_context.mode, sha1c, 1, &buf, &size))
-		return stream_blob_to_fd(1, sha1, NULL, 0);
+	    !textconv_object(obj_context.path, obj_context.mode, &oidc, 1, &buf, &size))
+		return stream_blob_to_fd(1, oid, NULL, 0);
 
 	if (!buf)
 		die(_("git show %s: bad file"), obj_name);
@@ -474,15 +489,15 @@ static int show_blob_object(const unsigned char *sha1, struct rev_info *rev, con
 	return 0;
 }
 
-static int show_tag_object(const unsigned char *sha1, struct rev_info *rev)
+static int show_tag_object(const struct object_id *oid, struct rev_info *rev)
 {
 	unsigned long size;
 	enum object_type type;
-	char *buf = read_sha1_file(sha1, &type, &size);
+	char *buf = read_sha1_file(oid->hash, &type, &size);
 	int offset = 0;
 
 	if (!buf)
-		return error(_("Could not read object %s"), sha1_to_hex(sha1));
+		return error(_("Could not read object %s"), oid_to_hex(oid));
 
 	assert(type == OBJ_TAG);
 	while (offset < size && buf[offset] != '\n') {
@@ -496,7 +511,7 @@ static int show_tag_object(const unsigned char *sha1, struct rev_info *rev)
 	}
 
 	if (offset < size)
-		fwrite(buf + offset, size - offset, 1, stdout);
+		fwrite(buf + offset, size - offset, 1, rev->diffopt.file);
 	free(buf);
 	return 0;
 }
@@ -505,7 +520,8 @@ static int show_tree_object(const unsigned char *sha1,
 		struct strbuf *base,
 		const char *pathname, unsigned mode, int stage, void *context)
 {
-	printf("%s%s\n", pathname, S_ISDIR(mode) ? "/" : "");
+	FILE *file = context;
+	fprintf(file, "%s%s\n", pathname, S_ISDIR(mode) ? "/" : "");
 	return 0;
 }
 
@@ -558,18 +574,18 @@ int cmd_show(int argc, const char **argv, const char *prefix)
 		const char *name = objects[i].name;
 		switch (o->type) {
 		case OBJ_BLOB:
-			ret = show_blob_object(o->oid.hash, &rev, name);
+			ret = show_blob_object(&o->oid, &rev, name);
 			break;
 		case OBJ_TAG: {
 			struct tag *t = (struct tag *)o;
 
 			if (rev.shown_one)
 				putchar('\n');
-			printf("%stag %s%s\n",
+			fprintf(rev.diffopt.file, "%stag %s%s\n",
 					diff_get_color_opt(&rev.diffopt, DIFF_COMMIT),
 					t->tag,
 					diff_get_color_opt(&rev.diffopt, DIFF_RESET));
-			ret = show_tag_object(o->oid.hash, &rev);
+			ret = show_tag_object(&o->oid, &rev);
 			rev.shown_one = 1;
 			if (ret)
 				break;
@@ -584,12 +600,12 @@ int cmd_show(int argc, const char **argv, const char *prefix)
 		case OBJ_TREE:
 			if (rev.shown_one)
 				putchar('\n');
-			printf("%stree %s%s\n\n",
+			fprintf(rev.diffopt.file, "%stree %s%s\n\n",
 					diff_get_color_opt(&rev.diffopt, DIFF_COMMIT),
 					name,
 					diff_get_color_opt(&rev.diffopt, DIFF_RESET));
 			read_tree_recursive((struct tree *)o, "", 0, 0, &match_all,
-					show_tree_object, NULL);
+					show_tree_object, rev.diffopt.file);
 			rev.shown_one = 1;
 			break;
 		case OBJ_COMMIT:
@@ -703,6 +719,7 @@ static void add_header(const char *value)
 static int thread;
 static int do_signoff;
 static int base_auto;
+static char *from;
 static const char *signature = git_version_string;
 static const char *signature_file;
 static int config_cover_letter;
@@ -791,15 +808,25 @@ static int git_format_config(const char *var, const char *value, void *cb)
 		base_auto = git_config_bool(var, value);
 		return 0;
 	}
+	if (!strcmp(var, "format.from")) {
+		int b = git_config_maybe_bool(var, value);
+		free(from);
+		if (b < 0)
+			from = xstrdup(value);
+		else if (b)
+			from = xstrdup(git_committer_info(IDENT_NO_DATE));
+		else
+			from = NULL;
+		return 0;
+	}
 
 	return git_log_config(var, value, cb);
 }
 
-static FILE *realstdout = NULL;
 static const char *output_directory = NULL;
 static int outdir_offset;
 
-static int reopen_stdout(struct commit *commit, const char *subject,
+static int open_next_file(struct commit *commit, const char *subject,
 			 struct rev_info *rev, int quiet)
 {
 	struct strbuf filename = STRBUF_INIT;
@@ -821,9 +848,9 @@ static int reopen_stdout(struct commit *commit, const char *subject,
 		fmt_output_subject(&filename, subject, rev);
 
 	if (!quiet)
-		fprintf(realstdout, "%s\n", filename.buf + outdir_offset);
+		printf("%s\n", filename.buf + outdir_offset);
 
-	if (freopen(filename.buf, "w", stdout) == NULL)
+	if ((rev->diffopt.file = fopen(filename.buf, "w")) == NULL)
 		return error(_("Cannot open patch file %s"), filename.buf);
 
 	strbuf_release(&filename);
@@ -882,15 +909,15 @@ static void gen_message_id(struct rev_info *info, char *base)
 	info->message_id = strbuf_detach(&buf, NULL);
 }
 
-static void print_signature(void)
+static void print_signature(FILE *file)
 {
 	if (!signature || !*signature)
 		return;
 
-	printf("-- \n%s", signature);
+	fprintf(file, "-- \n%s", signature);
 	if (signature[strlen(signature)-1] != '\n')
-		putchar('\n');
-	putchar('\n');
+		putc('\n', file);
+	putc('\n', file);
 }
 
 static void add_branch_description(struct strbuf *buf, const char *branch_name)
@@ -953,13 +980,13 @@ static void make_cover_letter(struct rev_info *rev, int use_stdout,
 	struct pretty_print_context pp = {0};
 	struct commit *head = list[0];
 
-	if (rev->commit_format != CMIT_FMT_EMAIL)
+	if (!cmit_fmt_is_mail(rev->commit_format))
 		die(_("Cover letter needs email format"));
 
 	committer = git_committer_info(0);
 
 	if (!use_stdout &&
-	    reopen_stdout(NULL, rev->numbered_files ? NULL : "cover-letter", rev, quiet))
+	    open_next_file(NULL, rev->numbered_files ? NULL : "cover-letter", rev, quiet))
 		return;
 
 	log_write_email_headers(rev, head, &pp.subject, &pp.after_subject,
@@ -982,7 +1009,7 @@ static void make_cover_letter(struct rev_info *rev, int use_stdout,
 	pp_title_line(&pp, &msg, &sb, encoding, need_8bit_cte);
 	pp_remainder(&pp, &msg, &sb, 0);
 	add_branch_description(&sb, branch_name);
-	printf("%s\n", sb.buf);
+	fprintf(rev->diffopt.file, "%s\n", sb.buf);
 
 	strbuf_release(&sb);
 
@@ -991,6 +1018,7 @@ static void make_cover_letter(struct rev_info *rev, int use_stdout,
 	log.wrap = 72;
 	log.in1 = 2;
 	log.in2 = 4;
+	log.file = rev->diffopt.file;
 	for (i = 0; i < nr; i++)
 		shortlog_add_commit(&log, list[i]);
 
@@ -1013,8 +1041,7 @@ static void make_cover_letter(struct rev_info *rev, int use_stdout,
 	diffcore_std(&opts);
 	diff_flush(&opts);
 
-	printf("\n");
-	print_signature();
+	fprintf(rev->diffopt.file, "\n");
 }
 
 static const char *clean_message_id(const char *msg_id)
@@ -1084,6 +1111,11 @@ static int subject_prefix_callback(const struct option *opt, const char *arg,
 	return 0;
 }
 
+static int rfc_callback(const struct option *opt, const char *arg, int unset)
+{
+	return subject_prefix_callback(opt, "RFC PATCH", unset);
+}
+
 static int numbered_cmdline_opt = 0;
 
 static int numbered_callback(const struct option *opt, const char *arg,
@@ -1220,11 +1252,11 @@ static struct commit *get_base_commit(const char *base_commit,
 		if (upstream) {
 			struct commit_list *base_list;
 			struct commit *commit;
-			unsigned char sha1[20];
+			struct object_id oid;
 
-			if (get_sha1(upstream, sha1))
+			if (get_oid(upstream, &oid))
 				die(_("Failed to resolve '%s' as a valid ref."), upstream);
-			commit = lookup_commit_or_die(sha1, "upstream base");
+			commit = lookup_commit_or_die(oid.hash, "upstream base");
 			base_list = get_merge_bases_many(commit, total, list);
 			/* There should be one and only one merge base. */
 			if (!base_list || base_list->next)
@@ -1311,20 +1343,20 @@ static void prepare_bases(struct base_tree_info *bases,
 	 * and stuff them in bases structure.
 	 */
 	while ((commit = get_revision(&revs)) != NULL) {
-		unsigned char sha1[20];
+		struct object_id oid;
 		struct object_id *patch_id;
 		if (commit->util)
 			continue;
-		if (commit_patch_id(commit, &diffopt, sha1))
+		if (commit_patch_id(commit, &diffopt, oid.hash, 0))
 			die(_("cannot get patch id"));
 		ALLOC_GROW(bases->patch_id, bases->nr_patch_id + 1, bases->alloc_patch_id);
 		patch_id = bases->patch_id + bases->nr_patch_id;
-		hashcpy(patch_id->hash, sha1);
+		oidcpy(patch_id, &oid);
 		bases->nr_patch_id++;
 	}
 }
 
-static void print_bases(struct base_tree_info *bases)
+static void print_bases(struct base_tree_info *bases, FILE *file)
 {
 	int i;
 
@@ -1333,11 +1365,11 @@ static void print_bases(struct base_tree_info *bases)
 		return;
 
 	/* Show the base commit */
-	printf("base-commit: %s\n", oid_to_hex(&bases->base_commit));
+	fprintf(file, "\nbase-commit: %s\n", oid_to_hex(&bases->base_commit));
 
 	/* Show the prerequisite patches */
 	for (i = bases->nr_patch_id - 1; i >= 0; i--)
-		printf("prerequisite-patch-id: %s\n", oid_to_hex(&bases->patch_id[i]));
+		fprintf(file, "prerequisite-patch-id: %s\n", oid_to_hex(&bases->patch_id[i]));
 
 	free(bases->patch_id);
 	bases->nr_patch_id = 0;
@@ -1368,7 +1400,6 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
 	int quiet = 0;
 	int reroll_count = -1;
 	char *branch_name = NULL;
-	char *from = NULL;
 	char *base_commit = NULL;
 	struct base_tree_info bases;
 
@@ -1392,6 +1423,9 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
 			    N_("start numbering patches at <n> instead of 1")),
 		OPT_INTEGER('v', "reroll-count", &reroll_count,
 			    N_("mark the series as Nth re-roll")),
+		{ OPTION_CALLBACK, 0, "rfc", &rev, NULL,
+			    N_("Use [RFC PATCH] instead of [PATCH]"),
+			    PARSE_OPT_NOARG | PARSE_OPT_NONEG, rfc_callback },
 		{ OPTION_CALLBACK, 0, "subject-prefix", &rev, N_("prefix"),
 			    N_("Use [<prefix>] instead of [PATCH]"),
 			    PARSE_OPT_NONEG, subject_prefix_callback },
@@ -1530,7 +1564,7 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
 	if (numbered && keep_subject)
 		die (_("-n and -k are mutually exclusive."));
 	if (keep_subject && subject_prefix)
-		die (_("--subject-prefix and -k are mutually exclusive."));
+		die (_("--subject-prefix/--rfc and -k are mutually exclusive."));
 	rev.preserve_subject = keep_subject;
 
 	argc = setup_revisions(argc, argv, &rev, &s_r_opt);
@@ -1569,6 +1603,8 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
 		setup_pager();
 
 	if (output_directory) {
+		if (rev.diffopt.use_color != GIT_COLOR_ALWAYS)
+			rev.diffopt.use_color = GIT_COLOR_NEVER;
 		if (use_stdout)
 			die(_("standard output, or directory, which one?"));
 		if (mkdir(output_directory, 0777) < 0 && errno != EEXIST)
@@ -1599,10 +1635,10 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
 			check_head = 1;
 
 		if (check_head) {
-			unsigned char sha1[20];
+			struct object_id oid;
 			const char *ref, *v;
 			ref = resolve_ref_unsafe("HEAD", RESOLVE_REF_READING,
-						 sha1, NULL);
+						 oid.hash, NULL);
 			if (ref && skip_prefix(ref, "refs/heads/", &v))
 				branch_name = xstrdup(v);
 			else
@@ -1626,9 +1662,6 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
 		get_patch_ids(&rev, &ids);
 	}
 
-	if (!use_stdout)
-		realstdout = xfdopen(xdup(1), "w");
-
 	if (prepare_revision_walk(&rev))
 		die(_("revision walk setup failed"));
 	rev.boundary = 1;
@@ -1650,16 +1683,16 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
 		/* nothing to do */
 		return 0;
 	total = nr;
-	if (!keep_subject && auto_number && total > 1)
-		numbered = 1;
-	if (numbered)
-		rev.total = total + start_number - 1;
 	if (cover_letter == -1) {
 		if (config_cover_letter == COVER_AUTO)
 			cover_letter = (total > 1);
 		else
 			cover_letter = (config_cover_letter == COVER_ON);
 	}
+	if (!keep_subject && auto_number && (total > 1 || cover_letter))
+		numbered = 1;
+	if (numbered)
+		rev.total = total + start_number - 1;
 
 	if (!signature) {
 		; /* --no-signature inhibits all signatures */
@@ -1693,7 +1726,8 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
 			gen_message_id(&rev, "cover");
 		make_cover_letter(&rev, use_stdout,
 				  origin, nr, list, branch_name, quiet);
-		print_bases(&bases);
+		print_bases(&bases, rev.diffopt.file);
+		print_signature(rev.diffopt.file);
 		total++;
 		start_number--;
 	}
@@ -1739,7 +1773,7 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
 		}
 
 		if (!use_stdout &&
-		    reopen_stdout(rev.numbered_files ? NULL : commit, NULL, &rev, quiet))
+		    open_next_file(rev.numbered_files ? NULL : commit, NULL, &rev, quiet))
 			die(_("Failed to create output files"));
 		shown = log_tree_commit(&rev, commit);
 		free_commit_buffer(commit);
@@ -1753,16 +1787,16 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
 		if (!use_stdout)
 			rev.shown_one = 0;
 		if (shown) {
+			print_bases(&bases, rev.diffopt.file);
 			if (rev.mime_boundary)
-				printf("\n--%s%s--\n\n\n",
+				fprintf(rev.diffopt.file, "\n--%s%s--\n\n\n",
 				       mime_boundary_leader,
 				       rev.mime_boundary);
 			else
-				print_signature();
-			print_bases(&bases);
+				print_signature(rev.diffopt.file);
 		}
 		if (!use_stdout)
-			fclose(stdout);
+			fclose(rev.diffopt.file);
 	}
 	free(list);
 	free(branch_name);
@@ -1776,9 +1810,9 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
 
 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);
+	struct object_id oid;
+	if (get_oid(arg, &oid) == 0) {
+		struct commit *commit = lookup_commit_reference(oid.hash);
 		if (commit) {
 			commit->object.flags |= flags;
 			add_pending_object(revs, &commit->object, arg);
@@ -1794,15 +1828,15 @@ static const char * const cherry_usage[] = {
 };
 
 static void print_commit(char sign, struct commit *commit, int verbose,
-			 int abbrev)
+			 int abbrev, FILE *file)
 {
 	if (!verbose) {
-		printf("%c %s\n", sign,
+		fprintf(file, "%c %s\n", sign,
 		       find_unique_abbrev(commit->object.oid.hash, abbrev));
 	} else {
 		struct strbuf buf = STRBUF_INIT;
 		pp_commit_easy(CMIT_FMT_ONELINE, commit, &buf);
-		printf("%c %s %s\n", sign,
+		fprintf(file, "%c %s %s\n", sign,
 		       find_unique_abbrev(commit->object.oid.hash, abbrev),
 		       buf.buf);
 		strbuf_release(&buf);
@@ -1883,7 +1917,7 @@ int cmd_cherry(int argc, const char **argv, const char *prefix)
 		commit = list->item;
 		if (has_commit_patch_id(commit, &ids))
 			sign = '-';
-		print_commit(sign, commit, verbose, abbrev);
+		print_commit(sign, commit, verbose, abbrev, revs.diffopt.file);
 		list = list->next;
 	}