Re: [PATCH 2/2 v2] check-attr: Add --stdin-paths option

[Dmitry Potapov <dpotapov@gmail.com>]

On Sun, Oct 12, 2008 at 05:04:21PM +0200, Jakub Narebski wrote:
> Dmitry Potapov wrote:
> 
> >> And since its being
> >> used mostly by automated tools (gitk/git-gui) I wonder if a -z should
> >> also be supported for input termination with NUL instead of LF.
> > 
> > I have added it, but after I did, I start to wonder whether it is the
> > right thing to do to unquote NUL terminated input line?
> 
> I think that -z should be not quoted (like git-diff-tree or git-ls-tree
> _output_); if it is, then IMHO it is a bug.

I am sorry. I was obviously wrong about 'git checkout-index', as it does
not try to unquote if '-z' is specified. So, my previous patch was wrong.
The corrected patch is below.

It still uses the same output format whether '-z' is specified or not.
Maybe I should change that too to use '\0' as the separator if '-z' is
specified?

Dmitry
PS Please, add me to 'To:' or 'Cc:' when you reply to my email.


-- >8 --
From: Dmitry Potapov <dpotapov@gmail.com>
Date: Sun, 12 Oct 2008 18:08:43 +0400
Subject: [PATCH] check-attr: Add --stdin option

---
This patch is meant to be squash on top of dp/checkattr in pu.

 Documentation/git-check-attr.txt |    8 ++++++--
 builtin-check-attr.c             |   15 ++++++++++-----
 t/t0003-attributes.sh            |    2 +-
 3 files changed, 17 insertions(+), 8 deletions(-)

diff --git a/Documentation/git-check-attr.txt b/Documentation/git-check-attr.txt
index 0839a57..14e4374 100644
--- a/Documentation/git-check-attr.txt
+++ b/Documentation/git-check-attr.txt
@@ -9,7 +9,7 @@ git-check-attr - Display gitattributes information.
 SYNOPSIS
 --------
 'git check-attr' attr... [--] pathname...
-'git check-attr' --stdin-paths attr... < <list-of-paths
+'git check-attr' --stdin [-z] attr... < <list-of-paths
 
 DESCRIPTION
 -----------
@@ -18,9 +18,13 @@ For every pathname, this command will list if each attr is 'unspecified',
 
 OPTIONS
 -------
---stdin-paths::
+--stdin::
 	Read file names from stdin instead of from the command-line.
 
+-z::
+	Only meaningful with `--stdin`; paths are separated with
+	NUL character instead of LF.
+
 \--::
 	Interpret all preceding arguments as attributes, and all following
 	arguments as path names. If not supplied, only the first argument will
diff --git a/builtin-check-attr.c b/builtin-check-attr.c
index fa1e4d5..4921341 100644
--- a/builtin-check-attr.c
+++ b/builtin-check-attr.c
@@ -7,12 +7,16 @@
 static int stdin_paths;
 static const char * const check_attr_usage[] = {
 "git check-attr attr... [--] pathname...",
-"git check-attr --stdin-paths attr... < <list-of-paths>",
+"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-paths", &stdin_paths, "read file names from stdin"),
+	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()
 };
 
@@ -41,11 +45,12 @@ 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, '\n') != EOF) {
-		if (buf.buf[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");
@@ -90,7 +95,7 @@ int cmd_check_attr(int argc, const char **argv, const char *prefix)
 	if (cnt <= 0)
 		errstr = "No attribute specified";
 	else if (stdin_paths && doubledash < argc)
-		errstr = "Can't specify files with --stdin-paths";
+		errstr = "Can't specify files with --stdin";
 	if (errstr) {
 		error (errstr);
 		usage_with_options(check_attr_usage, check_attr_options);
diff --git a/t/t0003-attributes.sh b/t/t0003-attributes.sh
index f6901b4..1c77192 100755
--- a/t/t0003-attributes.sh
+++ b/t/t0003-attributes.sh
@@ -60,7 +60,7 @@ a/b/h: test: a/b/h
 a/b/d/g: test: a/b/d/*
 EOF
 
-	sed -e "s/:.*//" < expect | git check-attr --stdin-paths test > actual &&
+	sed -e "s/:.*//" < expect | git check-attr --stdin test > actual &&
 	test_cmp expect actual
 '
 
-- 
1.6.0.2.521.g739d3

-- >8 --