Merge branch 'jc/log-stdin'

* jc/log-stdin:
  Add trivial tests for --stdin option to log family
  Make --stdin option to "log" family read also pathspecs
  setup_revisions(): do not call get_pathspec() too early
  Teach --stdin option to "log" family
  read_revision_from_stdin(): use strbuf

Conflicts:
	revision.c

Documentation/rev-list-options.txt

@@ -243,12 +243,14 @@ endif::git-rev-list[]
 	Pretend as if all the refs in `$GIT_DIR/refs/remotes` are listed
 	on the command line as '<commit>'.
 
-ifdef::git-rev-list[]
 --stdin::
 
 	In addition to the '<commit>' listed on the command
-	line, read them from the standard input.
+	line, read them from the standard input. If a '--' separator is
+	seen, stop reading commits and start reading paths to limit the
+	result.
 
+ifdef::git-rev-list[]
 --quiet::
 
 	Don't print anything to standard output.  This form

builtin-blame.c

@@ -2358,6 +2358,7 @@ parse_done:
 			die_errno("cannot stat path '%s'", path);
 	}
 
+	revs.disable_stdin = 1;
 	setup_revisions(argc, argv, &revs, NULL);
 	memset(&sb, 0, sizeof(sb));
 

builtin-diff-tree.c

@@ -104,6 +104,7 @@ int cmd_diff_tree(int argc, const char **argv, const char *prefix)
 	git_config(git_diff_basic_config, NULL); /* no "diff" UI options */
 	opt->abbrev = 0;
 	opt->diff = 1;
+	opt->disable_stdin = 1;
 	argc = setup_revisions(argc, argv, opt, NULL);
 
 	while (--argc > 0) {

builtin-rev-list.c

@@ -306,7 +306,6 @@ int cmd_rev_list(int argc, const char **argv, const char *prefix)
 	struct rev_info revs;
 	struct rev_list_info info;
 	int i;
-	int read_from_stdin = 0;
 	int bisect_list = 0;
 	int bisect_show_vars = 0;
 	int bisect_find_all = 0;
@@ -351,12 +350,6 @@ int cmd_rev_list(int argc, const char **argv, const char *prefix)
 			bisect_show_vars = 1;
 			continue;
 		}
-		if (!strcmp(arg, "--stdin")) {
-			if (read_from_stdin++)
-				die("--stdin given twice?");
-			read_revisions_from_stdin(&revs);
-			continue;
-		}
 		usage(rev_list_usage);
 
 	}

bundle.c

@@ -204,7 +204,6 @@ int create_bundle(struct bundle_header *header, const char *path,
 	int i, ref_count = 0;
 	char buffer[1024];
 	struct rev_info revs;
-	int read_from_stdin = 0;
 	struct child_process rls;
 	FILE *rls_fout;
 
@@ -256,15 +255,8 @@ int create_bundle(struct bundle_header *header, const char *path,
 	/* write references */
 	argc = setup_revisions(argc, argv, &revs, NULL);
 
-	for (i = 1; i < argc; i++) {
+	if (argc > 1)
-		if (!strcmp(argv[i], "--stdin")) {
+		return error("unrecognized argument: %s'", argv[1]);
-			if (read_from_stdin++)
-				die("--stdin given twice?");
-			read_revisions_from_stdin(&revs);
-			continue;
-		}
-		return error("unrecognized argument: %s'", argv[i]);
-	}
 
 	object_array_remove_duplicates(&revs.pending);
 

revision.c

@@ -953,21 +953,59 @@ int handle_revision_arg(const char *arg, struct rev_info *revs,
 	return 0;
 }
 
-void read_revisions_from_stdin(struct rev_info *revs)
+static void read_pathspec_from_stdin(struct rev_info *revs, struct strbuf *sb, const char ***prune_data)
 {
-	char line[1000];
+	const char **prune = *prune_data;
+	int prune_nr;
+	int prune_alloc;
 
-	while (fgets(line, sizeof(line), stdin) != NULL) {
+	/* count existing ones */
-		int len = strlen(line);
+	if (!prune)
-		if (len && line[len - 1] == '\n')
+		prune_nr = 0;
-			line[--len] = '\0';
+	else
+		for (prune_nr = 0; prune[prune_nr]; prune_nr++)
+			;
+	prune_alloc = prune_nr; /* not really, but we do not know */
+
+	while (strbuf_getwholeline(sb, stdin, '\n') != EOF) {
+		int len = sb->len;
+		if (len && sb->buf[len - 1] == '\n')
+			sb->buf[--len] = '\0';
+		ALLOC_GROW(prune, prune_nr+1, prune_alloc);
+		prune[prune_nr++] = xstrdup(sb->buf);
+	}
+	if (prune) {
+		ALLOC_GROW(prune, prune_nr+1, prune_alloc);
+		prune[prune_nr] = NULL;
+	}
+	*prune_data = prune;
+}
+
+static void read_revisions_from_stdin(struct rev_info *revs, const char ***prune)
+{
+	struct strbuf sb;
+	int seen_dashdash = 0;
+
+	strbuf_init(&sb, 1000);
+	while (strbuf_getwholeline(&sb, stdin, '\n') != EOF) {
+		int len = sb.len;
+		if (len && sb.buf[len - 1] == '\n')
+			sb.buf[--len] = '\0';
 		if (!len)
 			break;
-		if (line[0] == '-')
+		if (sb.buf[0] == '-') {
-			die("options not supported in --stdin mode");
+			if (len == 2 && sb.buf[1] == '-') {
-		if (handle_revision_arg(line, revs, 0, 1))
+				seen_dashdash = 1;
-			die("bad revision '%s'", line);
+				break;
 			}
+			die("options not supported in --stdin mode");
+		}
+		if (handle_revision_arg(sb.buf, revs, 0, 1))
+			die("bad revision '%s'", sb.buf);
+	}
+	if (seen_dashdash)
+		read_pathspec_from_stdin(revs, &sb, prune);
+	strbuf_release(&sb);
 }
 
 static void add_grep(struct rev_info *revs, const char *ptn, enum grep_pat_token what)
@@ -1229,6 +1267,34 @@ static int for_each_good_bisect_ref(each_ref_fn fn, void *cb_data)
 	return for_each_ref_in("refs/bisect/good", fn, cb_data);
 }
 
+static void append_prune_data(const char ***prune_data, const char **av)
+{
+	const char **prune = *prune_data;
+	int prune_nr;
+	int prune_alloc;
+
+	if (!prune) {
+		*prune_data = av;
+		return;
+	}
+
+	/* count existing ones */
+	for (prune_nr = 0; prune[prune_nr]; prune_nr++)
+		;
+	prune_alloc = prune_nr; /* not really, but we do not know */
+
+	while (*av) {
+		ALLOC_GROW(prune, prune_nr+1, prune_alloc);
+		prune[prune_nr++] = *av;
+		av++;
+	}
+	if (prune) {
+		ALLOC_GROW(prune, prune_nr+1, prune_alloc);
+		prune[prune_nr] = NULL;
+	}
+	*prune_data = prune;
+}
+
 /*
  * Parse revision information, filling in the "rev_info" structure,
  * and removing the used arguments from the argument list.
@@ -1238,7 +1304,8 @@ static int for_each_good_bisect_ref(each_ref_fn fn, void *cb_data)
  */
 int setup_revisions(int argc, const char **argv, struct rev_info *revs, const char *def)
 {
-	int i, flags, left, seen_dashdash;
+	int i, flags, left, seen_dashdash, read_from_stdin;
+	const char **prune_data = NULL;
 
 	/* First, search for "--" */
 	seen_dashdash = 0;
@@ -1249,13 +1316,14 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch
 		argv[i] = NULL;
 		argc = i;
 		if (argv[i + 1])
-			revs->prune_data = get_pathspec(revs->prefix, argv + i + 1);
+			prune_data = argv + i + 1;
 		seen_dashdash = 1;
 		break;
 	}
 
 	/* Second, deal with arguments and options */
 	flags = 0;
+	read_from_stdin = 0;
 	for (left = i = 1; i < argc; i++) {
 		const char *arg = argv[i];
 		if (*arg == '-') {
@@ -1300,6 +1368,16 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch
 				revs->no_walk = 0;
 				continue;
 			}
+			if (!strcmp(arg, "--stdin")) {
+				if (revs->disable_stdin) {
+					argv[left++] = arg;
+					continue;
+				}
+				if (read_from_stdin++)
+					die("--stdin given twice?");
+				read_revisions_from_stdin(revs, &prune_data);
+				continue;
+			}
 
 			opts = handle_revision_opt(revs, argc - i, argv + i, &left, argv);
 			if (opts > 0) {
@@ -1325,12 +1403,14 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch
 			for (j = i; j < argc; j++)
 				verify_filename(revs->prefix, argv[j]);
 
-			revs->prune_data = get_pathspec(revs->prefix,
+			append_prune_data(&prune_data, argv + i);
-							argv + i);
 			break;
 		}
 	}
 
+	if (prune_data)
+		revs->prune_data = get_pathspec(revs->prefix, prune_data);
+
 	if (revs->def == NULL)
 		revs->def = def;
 	if (revs->show_merge)

revision.h

@@ -84,6 +84,8 @@ struct rev_info {
 			use_terminator:1,
 			missing_newline:1,
 			date_mode_explicit:1;
+	unsigned int	disable_stdin:1;
+
 	enum date_mode date_mode;
 
 	unsigned int	abbrev;
@@ -129,8 +131,6 @@ struct rev_info {
 #define REV_TREE_DIFFERENT	3	/* Mixed changes */
 
 /* revision.c */
-void read_revisions_from_stdin(struct rev_info *revs);
-
 typedef void (*show_early_output_fn_t)(struct rev_info *, struct commit_list *);
 extern volatile show_early_output_fn_t show_early_output;
 

t/t6017-rev-list-stdin.sh

@@ -0,0 +1,61 @@
+#!/bin/sh
+#
+# Copyright (c) 2009, Junio C Hamano
+#
+
+test_description='log family learns --stdin'
+
+. ./test-lib.sh
+
+check () {
+	for cmd in rev-list "log --stat"
+	do
+		for i in "$@"
+		do
+			printf "%s\n" $i
+		done >input &&
+		test_expect_success "check $cmd $*" '
+			git $cmd $(cat input) >expect &&
+			git $cmd --stdin <input >actual &&
+			sed -e "s/^/input /" input &&
+			sed -e "s/^/output /" expect &&
+			test_cmp expect actual
+		'
+	done
+}
+
+them='1 2 3 4 5 6 7'
+
+test_expect_success setup '
+	(
+		for i in 0 $them
+		do
+			for j in $them
+			do
+				echo $i.$j >file-$j &&
+				git add file-$j || exit
+			done &&
+			test_tick &&
+			git commit -m $i || exit
+		done &&
+		for i in $them
+		do
+			git checkout -b side-$i master~$i &&
+			echo updated $i >file-$i &&
+			git add file-$i &&
+			test_tick &&
+			git commit -m side-$i || exit
+		done
+	)
+'
+
+check master
+check side-1 ^side-4
+check side-1 ^side-7 --
+check side-1 ^side-7 -- file-1
+check side-1 ^side-7 -- file-2
+check side-3 ^side-4 -- file-3
+check side-3 ^side-2
+check side-3 ^side-2 -- file-1
+
+test_done