view tests/test-patch-offset @ 11765:aff419e260f9 stable

templatefilters: make json filter handle multibyte characters correctly

It aims to fix javascript error of hgweb's graph view in Japanese 'cp932'
encoding.

'cp932' contains multibyte characters ending with '\x5c' (backslash),
e.g. '\x94\x5c' for Japanese Kanji 'Noh'.
Due to json filter escapes '\' to '\\', multibyte string ending with
'\x5c' is translated to "xxx\", resulting javascript parse error on
a web browser.

This patch changes json() to pass unicode to jsonescape().

Unicode decoding error handler changed to 'replace' by Patrick Mézard.

#!/bin/sh

cat > writepatterns.py <<EOF
import sys

path = sys.argv[1]
patterns = sys.argv[2:]

fp = file(path, 'wb')
for pattern in patterns:
    count = int(pattern[0:-1])
    char = pattern[-1] + '\n'
    fp.write(char*count)
fp.close()
EOF

echo % prepare repo
hg init a
cd a

# These initial lines of Xs were not in the original file used to generate
# the patch.  So all the patch hunks need to be applied to a constant offset
# within this file.  If the offset isn't tracked then the hunks can be
# applied to the wrong lines of this file.
python ../writepatterns.py a 34X 10A 1B 10A 1C 10A 1B 10A 1D 10A 1B 10A 1E 10A 1B 10A
hg commit -Am adda

# This is a cleaner patch generated via diff
# In this case it reproduces the problem when
# the output of hg export does not
echo % import patch
hg import -v -m 'b' -d '2 0' - <<EOF
--- a/a	2009-12-08 19:26:17.000000000 -0800
+++ b/a	2009-12-08 19:26:17.000000000 -0800
@@ -9,7 +9,7 @@
 A
 A
 B
-A
+a
 A
 A
 A
@@ -53,7 +53,7 @@
 A
 A
 B
-A
+a
 A
 A
 A
@@ -75,7 +75,7 @@
 A
 A
 B
-A
+a
 A
 A
 A
EOF

echo % compare imported changes against reference file
python ../writepatterns.py aref 34X 10A 1B 1a 9A 1C 10A 1B 10A 1D 10A 1B 1a 9A 1E 10A 1B 1a 9A
diff aref a