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From: lars.schneider@autodesk.com
To: git@vger.kernel.org
Cc: gitster@pobox.com, tboegi@web.de, j6t@kdbg.org,
	sunshine@sunshineco.com, peff@peff.net,
	ramsay@ramsayjones.plus.com, Johannes.Schindelin@gmx.de,
	pclouds@gmail.com, avarab@gmail.com,
	Lars Schneider <larsxschneider@gmail.com>
Subject: [PATCH v13 09/10] convert: add tracing for 'working-tree-encoding' attribute
Date: Sun, 15 Apr 2018 20:16:09 +0200	[thread overview]
Message-ID: <20180415181610.1612-10-lars.schneider@autodesk.com> (raw)
In-Reply-To: <20180415181610.1612-1-lars.schneider@autodesk.com>

From: Lars Schneider <larsxschneider@gmail.com>

Add the GIT_TRACE_WORKING_TREE_ENCODING environment variable to enable
tracing for content that is reencoded with the 'working-tree-encoding'
attribute. This is useful to debug encoding issues.

Signed-off-by: Lars Schneider <larsxschneider@gmail.com>
---
 convert.c                        | 25 +++++++++++++++++++++++++
 t/t0028-working-tree-encoding.sh |  2 ++
 2 files changed, 27 insertions(+)

diff --git a/convert.c b/convert.c
index 0e7930c154..bc35c33249 100644
--- a/convert.c
+++ b/convert.c
@@ -324,6 +324,29 @@ static int validate_encoding(const char *path, const char *enc,
 	return 0;
 }
 
+static void trace_encoding(const char *context, const char *path,
+			   const char *encoding, const char *buf, size_t len)
+{
+	static struct trace_key coe = TRACE_KEY_INIT(WORKING_TREE_ENCODING);
+	struct strbuf trace = STRBUF_INIT;
+	int i;
+
+	strbuf_addf(&trace, "%s (%s, considered %s):\n", context, path, encoding);
+	for (i = 0; i < len && buf; ++i) {
+		strbuf_addf(
+			&trace,"| \e[2m%2i:\e[0m %2x \e[2m%c\e[0m%c",
+			i,
+			(unsigned char) buf[i],
+			(buf[i] > 32 && buf[i] < 127 ? buf[i] : ' '),
+			((i+1) % 8 && (i+1) < len ? ' ' : '\n')
+		);
+	}
+	strbuf_addchars(&trace, '\n', 1);
+
+	trace_strbuf(&coe, &trace);
+	strbuf_release(&trace);
+}
+
 static const char *default_encoding = "UTF-8";
 
 static int encode_to_git(const char *path, const char *src, size_t src_len,
@@ -352,6 +375,7 @@ static int encode_to_git(const char *path, const char *src, size_t src_len,
 	if (validate_encoding(path, enc, src, src_len, die_on_error))
 		return 0;
 
+	trace_encoding("source", path, enc, src, src_len);
 	dst = reencode_string_len(src, src_len, default_encoding, enc,
 				  &dst_len);
 	if (!dst) {
@@ -369,6 +393,7 @@ static int encode_to_git(const char *path, const char *src, size_t src_len,
 			return 0;
 		}
 	}
+	trace_encoding("destination", path, default_encoding, dst, dst_len);
 
 	strbuf_attach(buf, dst, dst_len, dst_len + 1);
 	return 1;
diff --git a/t/t0028-working-tree-encoding.sh b/t/t0028-working-tree-encoding.sh
index a318d03232..026544ce09 100755
--- a/t/t0028-working-tree-encoding.sh
+++ b/t/t0028-working-tree-encoding.sh
@@ -4,6 +4,8 @@ test_description='working-tree-encoding conversion via gitattributes'
 
 . ./test-lib.sh
 
+GIT_TRACE_WORKING_TREE_ENCODING=1 && export GIT_TRACE_WORKING_TREE_ENCODING
+
 test_expect_success 'setup test files' '
 	git config core.eol lf &&
 
-- 
2.16.2


  parent reply	other threads:[~2018-04-15 18:17 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-04-15 18:16 [PATCH v13 00/10] convert: add support for different encodings lars.schneider
2018-04-15 18:16 ` [PATCH v13 01/10] strbuf: remove unnecessary NUL assignment in xstrdup_tolower() lars.schneider
2018-04-15 18:16 ` [PATCH v13 02/10] strbuf: add xstrdup_toupper() lars.schneider
2018-04-15 18:16 ` [PATCH v13 03/10] strbuf: add a case insensitive starts_with() lars.schneider
2018-04-15 18:16 ` [PATCH v13 04/10] utf8: teach same_encoding() alternative UTF encoding names lars.schneider
2018-04-15 18:16 ` [PATCH v13 05/10] utf8: add function to detect prohibited UTF-16/32 BOM lars.schneider
2018-04-15 18:16 ` [PATCH v13 06/10] utf8: add function to detect a missing " lars.schneider
2018-04-15 18:16 ` [PATCH v13 07/10] convert: add 'working-tree-encoding' attribute lars.schneider
2018-04-15 18:16 ` [PATCH v13 08/10] convert: check for detectable errors in UTF encodings lars.schneider
2018-04-15 18:16 ` lars.schneider [this message]
2018-04-15 18:16 ` [PATCH v13 10/10] convert: add round trip check based on 'core.checkRoundtripEncoding' lars.schneider

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