view tests/test-template-engine @ 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 > engine.py << EOF

from mercurial import templater

class mytemplater(object):
    def __init__(self, loader, filters, defaults):
        self.loader = loader

    def process(self, t, map):
        tmpl = self.loader(t)
        for k, v in map.iteritems():
            if k in ('templ', 'ctx', 'repo', 'revcache', 'cache'):
                continue
            if hasattr(v, '__call__'):
                v = v(**map)
            v = templater.stringify(v)
            tmpl = tmpl.replace('{{%s}}' % k, v)
        yield tmpl

templater.engines['my'] = mytemplater
EOF

hg init test
echo '[extensions]' > test/.hg/hgrc
echo "engine = `pwd`/engine.py" >> test/.hg/hgrc

cd test
cat > mymap << EOF
changeset = my:changeset.txt
EOF

cat > changeset.txt << EOF
{{rev}} {{node}} {{author}}
EOF

hg ci -Ama
hg log --style=./mymap