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From: "René Scharfe" <rene.scharfe@lsrfire.ath.cx>
To: Junio C Hamano <gitster@pobox.com>
Cc: Johannes Schindelin <Johannes.Schindelin@gmx.de>,
	Andreas Ericsson <ae@op5.se>,
	Git Mailing List <git@vger.kernel.org>,
	Michael Gernoth <simigern@cip.informatik.uni-erlangen.de>,
	Thomas Glanzmann <thomas@glanzmann.de>
Subject: [PATCH 4/3] archive: specfile syntax change: "$Format:%PLCHLDR$" instead of just "%PLCHLDR"
Date: Thu, 06 Sep 2007 18:20:09 +0200	[thread overview]
Message-ID: <46E028B9.2090908@lsrfire.ath.cx> (raw)
In-Reply-To: <7vzm02klip.fsf@gitster.siamese.dyndns.org>

As suggested by Johannes, --pretty=format: placeholders in specfiles
need to be wrapped in $Format:...$ now.  This syntax change restricts
the expansion of placeholders and makes it easier to use with files
that contain non-placeholder percent signs.

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
---
 Documentation/gitattributes.txt |    5 +++-
 builtin-archive.c               |   52 +++++++++++++++++++++++++++++++++++---
 t/t5000-tar-tree.sh             |    4 +-
 3 files changed, 53 insertions(+), 8 deletions(-)

diff --git a/Documentation/gitattributes.txt b/Documentation/gitattributes.txt
index 47a621b..37b3be8 100644
--- a/Documentation/gitattributes.txt
+++ b/Documentation/gitattributes.txt
@@ -432,7 +432,10 @@ several placeholders when adding this file to an archive.  The
 expansion depends on the availability of a commit ID, i.e. if
 gitlink:git-archive[1] has been given a tree instead of a commit or a
 tag then no replacement will be done.  The placeholders are the same
-as those for the option `--pretty=format:` of gitlink:git-log[1].
+as those for the option `--pretty=format:` of gitlink:git-log[1],
+except that they need to be wrapped like this: `$Format:PLACEHOLDERS$`
+in the file.  E.g. the string `$Format:%H$` will be replaced by the
+commit hash.
 
 
 GIT
diff --git a/builtin-archive.c b/builtin-archive.c
index faccce3..a8a0f01 100644
--- a/builtin-archive.c
+++ b/builtin-archive.c
@@ -81,14 +81,58 @@ static int run_remote_archiver(const char *remote, int argc,
 	return !!rv;
 }
 
+static void *format_specfile(const struct commit *commit, const char *format,
+                             unsigned long *sizep)
+{
+	unsigned long len = *sizep, result_len = 0;
+	const char *a = format;
+	char *result = NULL;
+
+	for (;;) {
+		const char *b, *c;
+		char *fmt, *formatted = NULL;
+		unsigned long a_len, fmt_len, formatted_len, allocated = 0;
+
+		b = memchr(a, '$', len);
+		if (!b || a + len < b + 9 || memcmp(b + 1, "Format:", 7))
+			break;
+		c = memchr(b + 8, '$', len - 8);
+		if (!c)
+			break;
+
+		a_len = b - a;
+		fmt_len = c - b - 8;
+		fmt = xmalloc(fmt_len + 1);
+		memcpy(fmt, b + 8, fmt_len);
+		fmt[fmt_len] = '\0';
+
+		formatted_len = format_commit_message(commit, fmt, &formatted,
+		                                      &allocated);
+		result = xrealloc(result, result_len + a_len + formatted_len);
+		memcpy(result + result_len, a, a_len);
+		memcpy(result + result_len + a_len, formatted, formatted_len);
+		result_len += a_len + formatted_len;
+		len -= c + 1 - a;
+		a = c + 1;
+	}
+
+	if (result && len) {
+		result = xrealloc(result, result_len + len);
+		memcpy(result + result_len, a, len);
+		result_len += len;
+	}
+
+	*sizep = result_len;
+
+	return result;
+}
+
 static void *convert_to_archive(const char *path,
                                 const void *src, unsigned long *sizep,
                                 const struct commit *commit)
 {
 	static struct git_attr *attr_specfile;
 	struct git_attr_check check[1];
-	char *interpolated = NULL;
-	unsigned long allocated = 0;
 
 	if (!commit)
 		return NULL;
@@ -102,9 +146,7 @@ static void *convert_to_archive(const char *path,
 	if (!ATTR_TRUE(check[0].value))
 		return NULL;
 
-	*sizep = format_commit_message(commit, src, &interpolated, &allocated);
-
-	return interpolated;
+	return format_specfile(commit, src, sizep);
 }
 
 void *sha1_file_to_archive(const char *path, const unsigned char *sha1,
diff --git a/t/t5000-tar-tree.sh b/t/t5000-tar-tree.sh
index 3d5d01b..6e89e07 100755
--- a/t/t5000-tar-tree.sh
+++ b/t/t5000-tar-tree.sh
@@ -36,7 +36,7 @@ test_expect_success \
      echo simple textfile >a/a &&
      mkdir a/bin &&
      cp /bin/sh a/bin &&
-     printf "%s" "$SPECFILEFORMAT" >a/specfile &&
+     printf "A\$Format:%s\$O" "$SPECFILEFORMAT" >a/specfile &&
      ln -s a a/l1 &&
      (p=long_path_to_a_file && cd a &&
       for depth in 1 2 3 4 5; do mkdir $p && cd $p; done &&
@@ -119,7 +119,7 @@ test_expect_success \
 
 test_expect_success \
      'validate specfile contents' \
-     'git log --max-count=1 "--pretty=format:$SPECFILEFORMAT" HEAD \
+     'git log --max-count=1 "--pretty=format:A${SPECFILEFORMAT}O" HEAD \
       >f/a/specfile.expected &&
       diff f/a/specfile.expected f/a/specfile'
 
-- 
1.5.3

  reply	other threads:[~2007-09-06 16:20 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-09-03 18:07 [PATCH 2/3] archive: specfile support (--pretty=format: in archive files) René Scharfe
2007-09-03 18:40 ` Johannes Schindelin
2007-09-03 20:19   ` David Kastrup
2007-09-04 23:13     ` René Scharfe
2007-09-03 23:53 ` Junio C Hamano
2007-09-04  5:45   ` Andreas Ericsson
2007-09-04 10:41     ` Johannes Schindelin
2007-09-04 23:13       ` René Scharfe
2007-09-05  0:12         ` Johannes Schindelin
2007-09-05  0:23         ` Junio C Hamano
2007-09-06 16:20           ` René Scharfe [this message]
2007-09-06 17:11             ` [PATCH 4/3] archive: specfile syntax change: "$Format:%PLCHLDR$" instead of just "%PLCHLDR" Johannes Schindelin
2007-09-06 20:35               ` René Scharfe
2007-09-06 20:53                 ` René Scharfe
2007-09-06 23:17                   ` Junio C Hamano
2007-09-07 10:44                 ` Johannes Schindelin
2007-09-06 22:32             ` [PATCH 3.5/3] add memmem() René Scharfe
2007-09-06 22:34             ` [PATCH 4/3] archive: specfile syntax change: "$Format:%PLCHLDR$" instead of just "%PLCHLDR" (take 2) René Scharfe
2007-09-06 16:51           ` [PATCH 5/3] archive: rename attribute specfile to export-subst René Scharfe
2007-09-06 17:13             ` Johannes Schindelin
2007-09-06 20:38               ` René Scharfe
2007-09-06 21:03               ` Junio C Hamano
2007-09-07 10:45                 ` Johannes Schindelin
2007-09-04 23:13   ` [PATCH 2/3] archive: specfile support (--pretty=format: in archive files) René Scharfe
2007-09-05  0:19     ` Junio C Hamano

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