Re: [PATCH] git format-patch --signature <string | file>

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On Tue, May 13, 2014 at 09:07:12AM -0700, Jonathan Nieder wrote:
> Hi,
> 
> Jeremiah Mahler wrote:
> 
> >   # from a string
> >   $ git format-patch --signature "from a string" origin
> >
> >   # or from a file
> >   $ git format-patch --signature ~/.signature origin
> 
> Interesting.  But... what if I want my patch to end with
> 
> 	-- 
> 	/home/jrnieder/.signature
> 
> ?  It seems safer to introduce a separate --signature-file option.
> 

It is probably smarter to avoid that corner case entirely.
Good idea.

> [...]
> >  builtin/log.c | 26 ++++++++++++++++++++++++--
> >  1 file changed, 24 insertions(+), 2 deletions(-)
> 
> Tests?
> 

I added a test which checks that a valid patch is produced and that
the signature from the file appears in the output.

> Thanks and hope that helps,
> Jonathan

Attached is a revised patch.

-- 
Jeremiah Mahler
jmmahler@xxxxxxxxx
http://github.com/jmahler
>From e5cbeaf50d85236d6dd53e64f8f7cf466b1acecd Mon Sep 17 00:00:00 2001
From: Jeremiah Mahler <jmmahler@xxxxxxxxx>
Date: Tue, 13 May 2014 18:10:53 -0700
Subject: [PATCH] format-patch --signature-file <file>

Added feature that allows a signature file to be used with format-patch.

  $ git format-patch --signature-file ~/.signature origin

Now signatures with newlines and other special characters can
be easily included.

Signed-off-by: Jeremiah Mahler <jmmahler@xxxxxxxxx>
---
 builtin/log.c           | 24 ++++++++++++++++++++++++
 t/t4014-format-patch.sh | 13 +++++++++++++
 2 files changed, 37 insertions(+)

diff --git a/builtin/log.c b/builtin/log.c
index 39e8836..1ec733b 100644
--- a/builtin/log.c
+++ b/builtin/log.c
@@ -1147,6 +1147,27 @@ static int from_callback(const struct option *opt, const char *arg, int unset)
 	return 0;
 }
 
+static int signature_file_callback(const struct option *opt, const char *arg,
+							int unset)
+{
+	const char **signature = opt->value;
+	static char buf[1024];
+	size_t sz;
+	FILE *fp;
+
+	fp = fopen(arg, "r");
+	if (fp) {
+		sz = sizeof(buf);
+		sz = fread(buf, 1, sz - 1, fp);
+		buf[sz] = '\0';
+		*signature = buf;
+		fclose(fp);
+	} else {
+		*signature = arg;
+	}
+	return 0;
+}
+
 int cmd_format_patch(int argc, const char **argv, const char *prefix)
 {
 	struct commit *commit;
@@ -1230,6 +1251,9 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
 			    PARSE_OPT_OPTARG, thread_callback },
 		OPT_STRING(0, "signature", &signature, N_("signature"),
 			    N_("add a signature")),
+		{ OPTION_CALLBACK, 0, "signature-file", &signature, N_("signature-file"),
+				N_("add a signature from contents of a file"),
+			    PARSE_OPT_NONEG, signature_file_callback },
 		OPT__QUIET(&quiet, N_("don't print the patch filenames")),
 		OPT_END()
 	};
diff --git a/t/t4014-format-patch.sh b/t/t4014-format-patch.sh
index 9c80633..19b67e3 100755
--- a/t/t4014-format-patch.sh
+++ b/t/t4014-format-patch.sh
@@ -762,6 +762,19 @@ test_expect_success 'format-patch --signature="" suppresses signatures' '
 	! grep "^-- \$" output
 '
 
+cat > expect << EOF
+Test User <test.email@xxxxxxxxxx>
+http://git.kernel.org/cgit/git/git.git
+git.kernel.org/?p=git/git.git;a=summary
+EOF
+
+test_expect_success 'format-patch --signature-file file' '
+	git format-patch --stdout --signature-file expect -1 >output &&
+	check_patch output &&
+	fgrep -x -f output expect >output2 &&
+	diff expect output2
+'
+
 test_expect_success TTY 'format-patch --stdout paginates' '
 	rm -f pager_used &&
 	test_terminal env GIT_PAGER="wc >pager_used" git format-patch --stdout --all &&
-- 
Jeremiah Mahler
jmmahler@xxxxxxxxx
http://github.com/jmahler



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