""" ``wheezy.template`` extension module.
"""
import re
from wheezy.html.ext.lexer import (
InlinePreprocessor,
Preprocessor,
WhitespacePreprocessor,
)
[docs]class WheezyPreprocessor(Preprocessor):
def __init__(self):
super(WheezyPreprocessor, self).__init__(
r"@((?P<expr>.+?)\."
r"(?P<widget>%(widgets)s){1}\((?P<params>.*?)\)\s*?"
r"(?P<expr_filter>((?<!!)!\w+(!\w+)*|)))(?=\s|$)"
)
EXPRESSION = "@%(expr)s%(expr_filter)s"
ERROR_CLASS0 = """\\
@if '%(name)s' in errors:
class="error"\\
@end
"""
ERROR_CLASS1 = """\\
@if '%(name)s' in errors:
class="error %(class)s"\\
@else:
class="%(class)s"\\
@end
"""
MULTIPLE_HIDDEN = """\\
@for item in %(value)s:
<input type="hidden" name="%(name)s" value="@item%(expr_filter)s" />\
@end
"""
INPUT = """\\
<input id="%(id)s" name="%(name)s" type="%(type)s"%(attrs)s%(class)s\\
@if %(value)s%(condition)s:
value="@%(func)s%(expr_filter)s" />\\
@else:
/>\\
@end
"""
CHECKBOX = """\\
<input id="%(id)s" name="%(name)s" type="checkbox" \
value="1"%(attrs)s%(class)s\\
@if %(value)s:
checked="checked"\\
@end
/>"""
MULTIPLE_CHECKBOX = """\\
@for key, text in %(choices)s:
<label%(attrs)s%(class)s><input id="%(id)s" name="%(name)s" type="checkbox" \
value="1"%(attrs)s%(class)s\\
@if key in %(value)s:
checked="checked"\\
@end
/>@text%(expr_filter)s</label>\\
@end
"""
RADIO = """\\
@for key, text in %(choices)s:
<label%(attrs)s%(class)s>\
<input type="radio" name="%(name)s"%(attrs)s \
value="@key%(expr_filter)s"%(class)s\\
@if key == %(value)s:
checked="checked"\\
@end
/>@text%(expr_filter)s</label>\\
@end
"""
SELECT = """\\
<select id="%(id)s" name="%(name)s"%(attrs)s%(class)s>\\
@for key, text in %(choices)s:
<option value="@key%(expr_filter)s"\\
@if key == %(value)s:
selected="selected"\\
@end
>@text%(expr_filter)s</option>\\
@end
</select>"""
MULTIPLE_SELECT = """\\
<select id="%(id)s" name="%(name)s" multiple="multiple"%(attrs)s%(class)s>\\
@for key, text in %(choices)s:
<option value="@key%(expr_filter)s"\\
@if key in %(value)s:
selected="selected"\\
@end
>@text%(expr_filter)s</option>\\
@end
</select>"""
ERROR = """\\
@if '%(name)s' in errors:
<span%(attrs)s>@errors['%(name)s'][-1]%(expr_filter)s</span>\\
@end
"""
MESSAGE = """\\
@if %(value)s:
<span%(attrs)s>%(info)s</span>\\
@end
"""
class WidgetExtension(object):
preprocessors = [WheezyPreprocessor()]
whitespace_preprocessor = WhitespacePreprocessor(
rules=[
(re.compile(r"^ [ \t]+", re.MULTILINE), r""),
(re.compile(r">\s+<", re.MULTILINE), r"><"),
(re.compile(r"(?<![>\\])\n(?=\w)", re.MULTILINE), r" \\\n"),
(re.compile(r"\s*(?<!\\)\n", re.MULTILINE), r"\\\n"),
],
ignore_rules=[re.compile(r"<(pre|code).*?>.*?</\1>", re.DOTALL)],
)
def whitespace_postprocessor(tokens):
for i in range(len(tokens)):
lineno, token, value = tokens[i]
if token == "markup":
value = whitespace_preprocessor(value)
tokens[i] = (lineno, token, value)
class WhitespaceExtension(object):
preprocessors = [
WhitespacePreprocessor(
rules=[(re.compile(r"\s+$", re.MULTILINE), r"")]
)
]
postprocessors = [whitespace_postprocessor]
RE_INLINE = re.compile(r'@inline\(("|\')(?P<path>.+?)\1\)', re.MULTILINE)
[docs]class InlineExtension(object):
"""Inline preprocessor. Rewrite @inline("...") tag with
file content. If fallback is ``True`` rewrite to
@include("...") tag.
>>> t = '1 @inline("master.html") 2'
>>> m = RE_INLINE.search(t)
>>> m.group('path')
'master.html'
>>> t[:m.start()], t[m.end():]
('1 ', ' 2')
>>> m = RE_INLINE.search(' @inline("shared/footer.html")')
>>> m.group('path')
'shared/footer.html'
"""
def __init__(self, searchpath, fallback=False):
strategy = (
fallback and (lambda path: '@include("' + path + '")') or None
)
self.preprocessors = [
InlinePreprocessor(RE_INLINE, searchpath, strategy)
]