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Syntax highlight namespace prefixes

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Kovid Goyal 2013-10-30 11:27:20 +05:30
parent 690644c042
commit 8111d646ae
1 changed files with 35 additions and 6 deletions
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41
src/calibre/gui2/tweak_book/editor/syntax/html.py
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@ -10,7 +10,7 @@ import re
from PyQt4.Qt import (QTextCharFormat)
from .base import SyntaxHighlighter
from calibre.gui2.tweak_book.editor.syntax.base import SyntaxHighlighter
from html5lib.constants import cdataElements, rcdataElements
entity_pat = re.compile(r'&#{0,1}[a-zA-Z0-9]{1,8};')
@ -75,9 +75,15 @@ def normal(state, text, i, formats):
name = m.group()
closing = name.startswith('/')
state.parse = state.IN_CLOSING_TAG if closing else state.IN_OPENING_TAG
state.tag = name[1:] if closing else name
num = 2 if closing else 1
return [(num, formats['end_tag' if closing else 'tag']), (len(state.tag), formats['tag_name'])]
ans = [(2 if closing else 1, formats['end_tag' if closing else 'tag'])]
if closing:
name = name[1:]
prefix, name = name.partition(':')[0::2]
state.tag = name or prefix
if prefix and name:
ans.append((len(prefix)+1, formats['nsprefix']))
ans.append((len(name or prefix), formats['tag_name']))
return ans
if ch == '&':
m = entity_pat.match(text, i)
@ -110,8 +116,10 @@ def opening_tag(state, text, i, formats):
if m is None:
return [(1, formats['?'])]
state.parse = state.ATTRIBUTE_NAME
num = len(m.group())
return [(num, formats['attr'])]
prefix, name = m.group().partition(':')[0::2]
if prefix and name:
return [(len(prefix) + 1, formats['nsprefix']), (len(name), formats['attr'])]
return [(len(prefix), formats['attr'])]
def attribute_name(state, text, i, formats):
' After attribute name '
@ -205,6 +213,7 @@ class HTMLHighlighter(SyntaxHighlighter):
'comment': t['Comment'],
'special': t['Special'],
'string': t['String'],
'nsprefix': t['Constant'],
}
for name, msg in {
'<': _('An unescaped < is not allowed. Replace it with &lt;'),
@ -240,3 +249,23 @@ class HTMLHighlighter(SyntaxHighlighter):
self.setCurrentBlockState(state.value)
if __name__ == '__main__':
from calibre.gui2.tweak_book.editor.text import launch_editor
launch_editor('''\
<!DOCTYPE html>
<html xml:lang="en" lang="en">
<head>
<meta charset="utf-8" />
<title>A title with a tag <b> in it</title>
<style type="text/css">
body {
color: green;
font-size: 12pt;
}
</style>
</head id="invalid attribute on closing tag">
<body>
<svg:svg xmlns:svg="http://whatever" />
</body>
</html>
''')