From: Lars Schneider <larsxschneider@xxxxxxxxx>
Add the GIT_TRACE_CHECKOUT_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@xxxxxxxxx>
---
convert.c | 28 ++++++++++++++++++++++++++++
t/t0028-working-tree-encoding.sh | 2 ++
2 files changed, 30 insertions(+)
diff --git a/convert.c b/convert.c
index 0c372069b1..13fad490ce 100644
--- a/convert.c
+++ b/convert.c
@@ -266,6 +266,29 @@ static int will_convert_lf_to_crlf(size_t len, struct text_stat *stats,
}
+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(CHECKOUT_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 struct encoding {
const char *name;
struct encoding *next;
@@ -325,6 +348,7 @@ static int encode_to_git(const char *path, const char *src, size_t src_len,
error(error_msg, path, enc->name);
}
+ trace_encoding("source", path, enc->name, src, src_len);
dst = reencode_string_len(src, src_len, default_encoding, enc->name,
&dst_len);
if (!dst) {
@@ -340,6 +364,7 @@ static int encode_to_git(const char *path, const char *src, size_t src_len,
else
error(msg, path, enc->name, default_encoding);
}
+ trace_encoding("destination", path, default_encoding, dst, dst_len);
/*
* UTF supports lossless round tripping [1]. UTF to other encoding are
@@ -365,6 +390,9 @@ static int encode_to_git(const char *path, const char *src, size_t src_len,
enc->name, default_encoding,
&re_src_len);
+ trace_encoding("reencoded source", path, enc->name,
+ re_src, re_src_len);
+
if (!re_src || src_len != re_src_len ||
memcmp(src, re_src, src_len)) {
const char* msg = _("encoding '%s' from %s to %s and "
diff --git a/t/t0028-working-tree-encoding.sh b/t/t0028-working-tree-encoding.sh
index 4d85b42776..0f36d4990a 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_CHECKOUT_ENCODING=1 && export GIT_TRACE_CHECKOUT_ENCODING
+
test_expect_success 'setup test repo' '
git config core.eol lf &&
--
2.16.0
