Merge commit 'v1.7.0' into jc/checkout-reflog-fix

* commit 'v1.7.0': (4188 commits)
  Git 1.7.0
  Fix typo in 1.6.6.2 release notes
  Re-fix check-ref-format documentation mark-up
  archive documentation: attributes are taken from the tree by default
  Documentation: minor fixes to RelNotes-1.7.0
  bash: support 'git am's new '--continue' option
  filter-branch: Fix error message for --prune-empty --commit-filter
  am: switch --resolved to --continue
  Update draft release notes to 1.7.0 one more time
  Git 1.6.6.2
  t8003: check exit code of command and error message separately
  check-ref-format documentation: fix enumeration mark-up
  Documentation: quote braces in {upstream} notation
  t3902: Protect against OS X normalization
  blame: prevent a segv when -L given start > EOF
  git-push: document all the status flags used in the output
  Fix parsing of imap.preformattedHTML and imap.sslverify
  git-add documentation: Fix shell quoting example
  Revert "pack-objects: fix pack generation when using pack_size_limit"
  archive: simplify archive format guessing
  ...

1 files changed, 85 insertions, 26 deletions

diff --git a/builtin-check-attr.c b/builtin-check-attr.c
index cb783fc77e..3016d29caa 100644
--- a/builtin-check-attr.c
+++ b/builtin-check-attr.c
@@ -2,21 +2,84 @@
 #include "cache.h"
 #include "attr.h"
 #include "quote.h"
+#include "parse-options.h"
 
-static const char check_attr_usage[] =
-"git check-attr attr... [--] pathname...";
+static int stdin_paths;
+static const char * const check_attr_usage[] = {
+"git check-attr attr... [--] pathname...",
+"git check-attr --stdin attr... < <list-of-paths>",
+NULL
+};
+
+static int null_term_line;
+
+static const struct option check_attr_options[] = {
+	OPT_BOOLEAN(0 , "stdin", &stdin_paths, "read file names from stdin"),
+	OPT_BOOLEAN('z', NULL, &null_term_line,
+		"input paths are terminated by a null character"),
+	OPT_END()
+};
+
+static void check_attr(int cnt, struct git_attr_check *check,
+	const char** name, const char *file)
+{
+	int j;
+	if (git_checkattr(file, cnt, check))
+		die("git_checkattr died");
+	for (j = 0; j < cnt; j++) {
+		const char *value = check[j].value;
+
+		if (ATTR_TRUE(value))
+			value = "set";
+		else if (ATTR_FALSE(value))
+			value = "unset";
+		else if (ATTR_UNSET(value))
+			value = "unspecified";
+
+		quote_c_style(file, NULL, stdout, 0);
+		printf(": %s: %s\n", name[j], value);
+	}
+}
+
+static void check_attr_stdin_paths(int cnt, struct git_attr_check *check,
+	const char** name)
+{
+	struct strbuf buf, nbuf;
+	int line_termination = null_term_line ? 0 : '\n';
+
+	strbuf_init(&buf, 0);
+	strbuf_init(&nbuf, 0);
+	while (strbuf_getline(&buf, stdin, line_termination) != EOF) {
+		if (line_termination && buf.buf[0] == '"') {
+			strbuf_reset(&nbuf);
+			if (unquote_c_style(&nbuf, buf.buf, NULL))
+				die("line is badly quoted");
+			strbuf_swap(&buf, &nbuf);
+		}
+		check_attr(cnt, check, name, buf.buf);
+		maybe_flush_or_die(stdout, "attribute to stdout");
+	}
+	strbuf_release(&buf);
+	strbuf_release(&nbuf);
+}
 
 int cmd_check_attr(int argc, const char **argv, const char *prefix)
 {
 	struct git_attr_check *check;
 	int cnt, i, doubledash;
+	const char *errstr = NULL;
+
+	argc = parse_options(argc, argv, prefix, check_attr_options,
+			     check_attr_usage, PARSE_OPT_KEEP_DASHDASH);
+	if (!argc)
+		usage_with_options(check_attr_usage, check_attr_options);
 
 	if (read_cache() < 0) {
 		die("invalid cache");
 	}
 
 	doubledash = -1;
-	for (i = 1; doubledash < 0 && i < argc; i++) {
+	for (i = 0; doubledash < 0 && i < argc; i++) {
 		if (!strcmp(argv[i], "--"))
 			doubledash = i;
 	}
@@ -24,41 +87,37 @@ int cmd_check_attr(int argc, const char **argv, const char *prefix)
 	/* If there is no double dash, we handle only one attribute */
 	if (doubledash < 0) {
 		cnt = 1;
-		doubledash = 1;
+		doubledash = 0;
 	} else
-		cnt = doubledash - 1;
+		cnt = doubledash;
 	doubledash++;
 
-	if (cnt <= 0 || argc < doubledash)
-		usage(check_attr_usage);
+	if (cnt <= 0)
+		errstr = "No attribute specified";
+	else if (stdin_paths && doubledash < argc)
+		errstr = "Can't specify files with --stdin";
+	if (errstr) {
+		error("%s", errstr);
+		usage_with_options(check_attr_usage, check_attr_options);
+	}
+
 	check = xcalloc(cnt, sizeof(*check));
 	for (i = 0; i < cnt; i++) {
 		const char *name;
 		struct git_attr *a;
-		name = argv[i + 1];
-		a = git_attr(name, strlen(name));
+		name = argv[i];
+		a = git_attr(name);
 		if (!a)
 			return error("%s: not a valid attribute name", name);
 		check[i].attr = a;
 	}
 
-	for (i = doubledash; i < argc; i++) {
-		int j;
-		if (git_checkattr(argv[i], cnt, check))
-			die("git_checkattr died");
-		for (j = 0; j < cnt; j++) {
-			const char *value = check[j].value;
-
-			if (ATTR_TRUE(value))
-				value = "set";
-			else if (ATTR_FALSE(value))
-				value = "unset";
-			else if (ATTR_UNSET(value))
-				value = "unspecified";
-
-			quote_c_style(argv[i], NULL, stdout, 0);
-			printf(": %s: %s\n", argv[j+1], value);
-		}
+	if (stdin_paths)
+		check_attr_stdin_paths(cnt, check, argv);
+	else {
+		for (i = doubledash; i < argc; i++)
+			check_attr(cnt, check, argv, argv[i]);
+		maybe_flush_or_die(stdout, "attribute to stdout");
 	}
 	return 0;
 }