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Edit book: Fix a hang when editing an HTML or XML file with text of the form <abc: (i.e. a tag name with a trailing colon). Fixes #1314009 [Editor: wrongly placed colon causes hang](https://bugs.launchpad.net/calibre/+bug/1314009)

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This commit is contained in:
Kovid Goyal 2014-04-29 10:13:14 +05:30
parent c3812f131b
commit f8d91b7a09
2 changed files with 29 additions and 23 deletions
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8
src/calibre/gui2/tweak_book/editor/smart/html.py
View File

@ -24,8 +24,8 @@ class Tag(object):
def __init__(self, start_block, tag_start, end_block, tag_end, self_closing=False):
self.start_block, self.end_block = start_block, end_block
self.start_offset, self.end_offset = tag_start.offset, tag_end.offset
tag = tag_start.name or tag_start.prefix
if tag_start.name and tag_start.prefix:
tag = tag_start.name
if tag_start.prefix:
tag = tag_start.prefix + ':' + tag
self.name = tag
self.self_closing = self_closing
@ -101,8 +101,8 @@ def find_tag_definition(block, offset):
return None, False
tag_start = boundary
closing = tag_start.closing
tag = tag_start.name or tag_start.prefix
if tag_start.name and tag_start.prefix:
tag = tag_start.name
if tag_start.prefix:
tag = tag_start.prefix + ':' + tag
return tag, closing

44
src/calibre/gui2/tweak_book/editor/syntax/html.py
View File

@ -234,7 +234,7 @@ def css(state, text, i, formats):
if m is not None:
state.sub_parser_state = 0
state.parse = IN_CLOSING_TAG
add_tag_data(state, TagStart(m.start(), 'style', '', True, True))
add_tag_data(state, TagStart(m.start(), '', 'style', True, True))
ans.extend([(2, formats['end_tag']), (len(m.group()) - 2, formats['tag_name'])])
return ans
@ -248,7 +248,7 @@ def cdata(state, text, i, formats):
return [(len(text) - i, fmt)]
state.parse = IN_CLOSING_TAG
num = m.start() - i
add_tag_data(state, TagStart(m.start(), name, '', True, True))
add_tag_data(state, TagStart(m.start(), '', name, True, True))
return [(num, fmt), (2, formats['end_tag']), (len(m.group()) - 2, formats['tag_name'])]
def mark_nbsp(state, text, nbsp_format):
@ -288,18 +288,23 @@ def normal(state, text, i, formats):
if m is None:
return [(1, formats['<'])]
name = m.group()
closing = name.startswith('/')
state.parse = IN_CLOSING_TAG if closing else IN_OPENING_TAG
ans = [(2 if closing else 1, formats['end_tag' if closing else 'tag'])]
tname = m.group()
closing = tname.startswith('/')
if closing:
name = name[1:]
prefix, name = name.partition(':')[0::2]
if prefix and name:
tname = tname[1:]
if ':' in tname:
prefix, name = tname.split(':', 1)
else:
prefix, name = '', tname
if prefix and not name:
return [(len(m.group()) + 1, formats['only-prefix'])]
ans = [(2 if closing else 1, formats['end_tag' if closing else 'tag'])]
if prefix:
ans.append((len(prefix)+1, formats['nsprefix']))
ans.append((len(name or prefix), formats['tag_name']))
ans.append((len(name), formats['tag_name']))
state.parse = IN_CLOSING_TAG if closing else IN_OPENING_TAG
add_tag_data(state, TagStart(i, prefix, name, closing, True))
(state.close_tag if closing else state.open_tag)(name or prefix)
(state.close_tag if closing else state.open_tag)(name)
return ans
if ch == '&':
@ -445,13 +450,14 @@ def create_formats(highlighter):
'nbsp': t['SpecialCharacter'],
}
for name, msg in {
'<': _('An unescaped < is not allowed. Replace it with &lt;'),
'&': _('An unescaped ampersand is not allowed. Replace it with &amp;'),
'>': _('An unescaped > is not allowed. Replace it with &gt;'),
'/': _('/ not allowed except at the end of the tag'),
'?': _('Unknown character'),
'bad-closing': _('A closing tag must contain only the tag name and nothing else'),
'no-attr-value': _('Expecting an attribute value'),
'<': _('An unescaped < is not allowed. Replace it with &lt;'),
'&': _('An unescaped ampersand is not allowed. Replace it with &amp;'),
'>': _('An unescaped > is not allowed. Replace it with &gt;'),
'/': _('/ not allowed except at the end of the tag'),
'?': _('Unknown character'),
'bad-closing': _('A closing tag must contain only the tag name and nothing else'),
'no-attr-value': _('Expecting an attribute value'),
'only-prefix': _('A tag name cannot end with a colon'),
}.iteritems():
f = formats[name] = SyntaxTextCharFormat(formats['error'])
f.setToolTip(msg)
@ -507,7 +513,7 @@ if __name__ == '__main__':
</style>
<style type="text/css">p.small { font-size: x-small; color:gray }</style>
</head id="invalid attribute on closing tag">
<body>
<body><p:
<!-- The start of the actual body text -->
<h1>A heading that should appear in bold, with an <i>italic</i> word</h1>
<p>Some text with inline formatting, that is syntax highlighted. A <b>bold</b> word, and an <em>italic</em> word. \