forked from sebix/python-textile
/
functions.py
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/
functions.py
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#!/usr/bin/env python
# -*- coding: utf-8 -*-
__copyright__ = """
Copyright (c) 2009, Jason Samsa, http://jsamsa.com/
Copyright (c) 2010, Kurt Raschke <kurt@kurtraschke.com>
Copyright (c) 2004, Roberto A. F. De Almeida, http://dealmeida.net/
Copyright (c) 2003, Mark Pilgrim, http://diveintomark.org/
Original PHP Version:
Copyright (c) 2003-2004, Dean Allen <dean@textism.com>
All rights reserved.
Thanks to Carlo Zottmann <carlo@g-blog.net> for refactoring
Textile's procedural code into a class framework
Additions and fixes Copyright (c) 2006 Alex Shiels http://thresholdstate.com/
"""
import re
import uuid
import string
import urlparse
import urllib
from textile.tools import sanitizer, imagesize
def _normalize_newlines(string):
out = string.strip()
out = re.sub(r'\r\n', '\n', out)
out = re.sub(r'\n{3,}', '\n\n', out)
out = re.sub(r'\n\s*\n', '\n\n', out)
out = re.sub(r'"$', '" ', out)
return out
class Textile(object):
horizontal_align_re = r'(?:\<(?!>)|(?<!<)\>|\<\>|\=|[()]+(?! ))'
vertical_align_re = r'[\-^~]'
class_re = r'(?:\([^)]+\))'
language_re = r'(?:\[[^\]]+\])'
style_re = r'(?:\{[^}]+\})'
colspan_re = r'(?:\\\d+)'
rowspan_re = r'(?:\/\d+)'
align_re = r'(?:%s|%s)*' % (horizontal_align_re, vertical_align_re)
table_span_re = r'(?:%s|%s)*' % (colspan_re, rowspan_re)
c = r'(?:%s)*' % '|'.join([class_re, style_re,
language_re, horizontal_align_re])
pnct = r'[-!"#$%&()*+,/:;<=>?@\'\[\\\]\.^_`{|}~]'
urlch = '[\w"$\-_.+*\'(),";\/?:@=&%#{}|\\^~\[\]`]'
url_schemes = ('http', 'https', 'ftp', 'mailto')
btag = ('bq', 'bc', 'notextile', 'pre', 'h[1-6]', 'fn\d+', 'p')
btag_lite = ('bq', 'bc', 'p')
iAlign = {'<': 'float: left;',
'>': 'float: right;',
'=': 'display: block; margin: 0 auto;'}
vAlign = {'^': 'top', '-': 'middle', '~': 'bottom'}
hAlign = {'<': 'left', '=': 'center', '>': 'right', '<>': 'justify'}
glyph_defaults = (
('txt_quote_single_open', '‘'),
('txt_quote_single_close', '’'),
('txt_quote_double_open', '“'),
('txt_quote_double_close', '”'),
('txt_apostrophe', '’'),
('txt_prime', '′'),
('txt_prime_double', '″'),
('txt_ellipsis', '…'),
('txt_emdash', '—'),
('txt_endash', '–'),
('txt_dimension', '×'),
('txt_trademark', '™'),
('txt_registered', '®'),
('txt_copyright', '©'),
)
def __init__(self, restricted=False, lite=False, noimage=False,
auto_link=False, get_sizes=False):
"""docstring for __init__"""
self.restricted = restricted
self.lite = lite
self.noimage = noimage
self.get_sizes = get_sizes
self.auto_link = auto_link
self.fn = {}
self.urlrefs = {}
self.shelf = {}
self.rel = ''
self.html_type = 'xhtml'
def textile(self, text, rel=None, head_offset=0, html_type='xhtml',
sanitize=False):
"""
>>> import textile
>>> textile.textile('some textile')
'\\t<p>some textile</p>'
"""
self.html_type = html_type
# text = unicode(text)
text = _normalize_newlines(text)
if self.restricted:
text = self.encode_html(text, quotes=False)
if rel:
self.rel = ' rel="%s"' % rel
text = self.getRefs(text)
text = self.block(text, int(head_offset))
text = self.retrieve(text)
if sanitize:
text = sanitizer.sanitize(text, self.html_type)
return text
def pba(self, block_attributes, element=None):
"""
Parse block attributes.
>>> t = Textile()
>>> t.pba(r'\3')
''
>>> t.pba(r'\\3', element='td')
' colspan="3"'
>>> t.pba(r'/4', element='td')
' rowspan="4"'
>>> t.pba(r'\\3/4', element='td')
' colspan="3" rowspan="4"'
>>> t.pba('^', element='td')
' style="vertical-align:top;"'
>>> t.pba('{line-height:18px}')
' style="line-height:18px;"'
>>> t.pba('(foo-bar)')
' class="foo-bar"'
>>> t.pba('(#myid)')
' id="myid"'
>>> t.pba('(foo-bar#myid)')
' class="foo-bar" id="myid"'
>>> t.pba('((((')
' style="padding-left:4em;"'
>>> t.pba(')))')
' style="padding-right:3em;"'
>>> t.pba('[fr]')
' lang="fr"'
>>> rt = Textile()
>>> rt.restricted = True
>>> rt.pba('[en]')
' lang="en"'
>>> rt.pba('(#id)')
''
"""
style = []
aclass = ''
lang = ''
colspan = ''
rowspan = ''
block_id = ''
if not block_attributes:
return ''
matched = block_attributes
if element == 'td':
m = re.search(r'\\(\d+)', matched)
if m:
colspan = m.group(1)
m = re.search(r'/(\d+)', matched)
if m:
rowspan = m.group(1)
if element == 'td' or element == 'tr':
m = re.search(r'(%s)' % self.vertical_align_re, matched)
if m:
style.append("vertical-align:%s;" % self.vAlign[m.group(1)])
m = re.search(r'\{([^}]*)\}', matched)
if m:
style.append(m.group(1).rstrip(';') + ';')
matched = matched.replace(m.group(0), '')
m = re.search(r'\[([^\]]+)\]', matched, re.U)
if m:
lang = m.group(1)
matched = matched.replace(m.group(0), '')
m = re.search(r'\(([^()]+)\)', matched, re.U)
if m:
aclass = m.group(1)
matched = matched.replace(m.group(0), '')
m = re.search(r'([(]+)', matched)
if m:
style.append("padding-left:%sem;" % len(m.group(1)))
matched = matched.replace(m.group(0), '')
m = re.search(r'([)]+)', matched)
if m:
style.append("padding-right:%sem;" % len(m.group(1)))
matched = matched.replace(m.group(0), '')
m = re.search(r'(%s)' % self.horizontal_align_re, matched)
if m:
style.append("text-align:%s;" % self.hAlign[m.group(1)])
m = re.search(r'^(.*)#(.*)$', aclass)
if m:
block_id = m.group(2)
aclass = m.group(1)
if self.restricted:
if lang:
return ' lang="%s"' % lang
else:
return ''
result = []
if style:
result.append(' style="%s"' % "".join(style))
if aclass:
result.append(' class="%s"' % aclass)
if lang:
result.append(' lang="%s"' % lang)
if block_id:
result.append(' id="%s"' % block_id)
if colspan:
result.append(' colspan="%s"' % colspan)
if rowspan:
result.append(' rowspan="%s"' % rowspan)
return ''.join(result)
def hasRawText(self, text):
"""
checks whether the text has text not already enclosed by a block tag
>>> t = Textile()
>>> t.hasRawText('<p>foo bar biz baz</p>')
False
>>> t.hasRawText(' why yes, yes it does')
True
"""
r = re.compile(r'<(p|blockquote|div|form|table|ul|ol|pre|h\d)[^>]*?>.*</\1>',
re.S).sub('', text.strip()).strip()
r = re.compile(r'<(hr|br)[^>]*?/>').sub('', r)
return '' != r
def table(self, text):
r"""
>>> t = Textile()
>>> t.table('(rowclass). |one|two|three|\n|a|b|c|')
'\t<table>\n\t\t<tr class="rowclass">\n\t\t\t<td>one</td>\n\t\t\t<td>two</td>\n\t\t\t<td>three</td>\n\t\t</tr>\n\t\t<tr>\n\t\t\t<td>a</td>\n\t\t\t<td>b</td>\n\t\t\t<td>c</td>\n\t\t</tr>\n\t</table>\n\n'
"""
text = text + "\n\n"
pattern = re.compile(r'^(?:table(_?%(s)s%(a)s%(c)s)\. ?\n)?^(%(a)s%(c)s\.? ?\|.*\|)\n\n'
% {'s': self.table_span_re,
'a': self.align_re,
'c': self.c},
re.S | re.M | re.U)
return pattern.sub(self.fTable, text)
def fTable(self, match):
tatts = self.pba(match.group(1), 'table')
rows = []
for row in [x for x in match.group(2).split('\n') if x]:
rmtch = re.search(r'^(%s%s\. )(.*)'
% (self.align_re, self.c), row.lstrip())
if rmtch:
ratts = self.pba(rmtch.group(1), 'tr')
row = rmtch.group(2)
else:
ratts = ''
cells = []
for cell in row.split('|')[1:-1]:
ctyp = 'd'
if re.search(r'^_', cell):
ctyp = "h"
cmtch = re.search(r'^(_?%s%s%s\. )(.*)'
% (self.table_span_re,
self.align_re,
self.c),
cell)
if cmtch:
catts = self.pba(cmtch.group(1), 'td')
cell = cmtch.group(2)
else:
catts = ''
cell = self.graf(self.span(cell))
cells.append('\t\t\t<t%s%s>%s</t%s>'
% (ctyp, catts, cell, ctyp))
rows.append("\t\t<tr%s>\n%s\n\t\t</tr>"
% (ratts, '\n'.join(cells)))
cells = []
catts = None
return "\t<table%s>\n%s\n\t</table>\n\n" % (tatts, '\n'.join(rows))
def lists(self, text):
"""
>>> t = Textile()
>>> t.lists("* one\\n* two\\n* three")
'\\t<ul>\\n\\t\\t<li>one</li>\\n\\t\\t<li>two</li>\\n\\t\\t<li>three</li>\\n\\t</ul>'
"""
#Replace line-initial bullets with asterisks
bullet_pattern = re.compile(u'^•', re.U | re.M)
pattern = re.compile(r'^([#*]+%s .*)$(?![^#*])'
% self.c, re.U | re.M | re.S)
return pattern.sub(self.fList, bullet_pattern.sub('*', text))
def fList(self, match):
text = match.group(0).split("\n")
result = []
lists = []
for i, line in enumerate(text):
try:
nextline = text[i + 1]
except IndexError:
nextline = ''
m = re.search(r"^([#*]+)(%s%s) (.*)$" % (self.align_re,
self.c), line, re.S)
if m:
tl, atts, content = m.groups()
nl = ''
nm = re.search(r'^([#*]+)\s.*', nextline)
if nm:
nl = nm.group(1)
if tl not in lists:
lists.append(tl)
atts = self.pba(atts)
line = "\t<%sl%s>\n\t\t<li>%s" % (self.listType(tl),
atts, self.graf(content))
else:
line = "\t\t<li>" + self.graf(content)
if len(nl) <= len(tl):
line = line + "</li>"
for k in reversed(lists):
if len(k) > len(nl):
line = line + "\n\t</%sl>" % self.listType(k)
if len(k) > 1:
line = line + "</li>"
lists.remove(k)
result.append(line)
return "\n".join(result)
def listType(self, list_string):
if re.search(r'^#+', list_string):
return 'o'
else:
return 'u'
def doPBr(self, in_):
return re.compile(r'<(p)([^>]*?)>(.*)(</\1>)', re.S).sub(self.doBr,
in_)
def doBr(self, match):
if self.html_type == 'html':
content = re.sub(r'(.+)(?:(?<!<br>)|(?<!<br />))\n(?![#*\s|])', '\\1<br>',
match.group(3))
else:
content = re.sub(r'(.+)(?:(?<!<br>)|(?<!<br />))\n(?![#*\s|])', '\\1<br />',
match.group(3))
return '<%s%s>%s%s' % (match.group(1), match.group(2),
content, match.group(4))
def block(self, text, head_offset=0):
"""
>>> t = Textile()
>>> t.block('h1. foobar baby')
'\\t<h1>foobar baby</h1>'
"""
if not self.lite:
tre = '|'.join(self.btag)
else:
tre = '|'.join(self.btag_lite)
text = text.split('\n\n')
tag = 'p'
atts = cite = graf = ext = ''
c1 = ''
out = []
anon = False
for line in text:
pattern = r'^(%s)(%s%s)\.(\.?)(?::(\S+))? (.*)$' % (tre,
self.align_re,
self.c)
match = re.search(pattern, line, re.S)
if match:
if ext:
out.append(out.pop() + c1)
tag, atts, ext, cite, graf = match.groups()
h_match = re.search(r'h([1-6])', tag)
if h_match:
head_level, = h_match.groups()
tag = 'h%i' % max(1,
min(int(head_level) + head_offset,
6))
o1, o2, content, c2, c1 = self.fBlock(tag, atts, ext,
cite, graf)
# leave off c1 if this block is extended,
# we'll close it at the start of the next block
if ext:
line = "%s%s%s%s" % (o1, o2, content, c2)
else:
line = "%s%s%s%s%s" % (o1, o2, content, c2, c1)
else:
anon = True
if ext or not re.search(r'^\s', line):
o1, o2, content, c2, c1 = self.fBlock(tag, atts, ext,
cite, line)
# skip $o1/$c1 because this is part of a continuing
# extended block
if tag == 'p' and not self.hasRawText(content):
line = content
else:
line = "%s%s%s" % (o2, content, c2)
else:
line = self.graf(line)
line = self.doPBr(line)
if self.html_type == 'xhtml':
line = re.sub(r'<br>', '<br />', line)
if ext and anon:
out.append(out.pop() + "\n" + line)
else:
out.append(line)
if not ext:
tag = 'p'
atts = ''
cite = ''
graf = ''
if ext:
out.append(out.pop() + c1)
return '\n\n'.join(out)
def fBlock(self, tag, atts, ext, cite, content):
"""
>>> t = Textile()
>>> t.fBlock("bq", "", None, "", "Hello BlockQuote")
('\\t<blockquote>\\n', '\\t\\t<p>', 'Hello BlockQuote', '</p>', '\\n\\t</blockquote>')
>>> t.fBlock("bq", "", None, "http://google.com", "Hello BlockQuote")
('\\t<blockquote cite="http://google.com">\\n', '\\t\\t<p>', 'Hello BlockQuote', '</p>', '\\n\\t</blockquote>')
>>> t.fBlock("bc", "", None, "", 'printf "Hello, World";') # doctest: +ELLIPSIS
('<pre>', '<code>', ..., '</code>', '</pre>')
>>> t.fBlock("h1", "", None, "", "foobar")
('', '\\t<h1>', 'foobar', '</h1>', '')
"""
atts = self.pba(atts)
o1 = o2 = c2 = c1 = ''
m = re.search(r'fn(\d+)', tag)
if m:
tag = 'p'
if m.group(1) in self.fn:
fnid = self.fn[m.group(1)]
else:
fnid = m.group(1)
atts = atts + ' id="fn%s"' % fnid
if atts.find('class=') < 0:
atts = atts + ' class="footnote"'
content = ('<sup>%s</sup>' % m.group(1)) + content
if tag == 'bq':
cite = self.checkRefs(cite)
if cite:
cite = ' cite="%s"' % cite
else:
cite = ''
o1 = "\t<blockquote%s%s>\n" % (cite, atts)
o2 = "\t\t<p%s>" % atts
c2 = "</p>"
c1 = "\n\t</blockquote>"
elif tag == 'bc':
o1 = "<pre%s>" % atts
o2 = "<code%s>" % atts
c2 = "</code>"
c1 = "</pre>"
content = self.shelve(self.encode_html(content.rstrip("\n") +
"\n"))
elif tag == 'notextile':
content = self.shelve(content)
o1 = o2 = ''
c1 = c2 = ''
elif tag == 'pre':
content = self.shelve(self.encode_html(content.rstrip("\n") +
"\n"))
o1 = "<pre%s>" % atts
o2 = c2 = ''
c1 = '</pre>'
else:
o2 = "\t<%s%s>" % (tag, atts)
c2 = "</%s>" % tag
content = self.graf(content)
return o1, o2, content, c2, c1
def footnoteRef(self, text):
"""
>>> t = Textile()
>>> t.footnoteRef('foo[1] ') # doctest: +ELLIPSIS
'foo<sup class="footnote"><a href="#fn...">1</a></sup> '
"""
return re.compile(r'\b\[([0-9]+)\](\s)?', re.U).sub(self.footnoteID,
text)
def footnoteID(self, match):
footnoteNum, text = match.groups()
if footnoteNum not in self.fn:
self.fn[footnoteNum] = str(uuid.uuid4())
footnoteID = self.fn[footnoteNum]
if not text:
text = ''
return '<sup class="footnote"><a href="#fn%s">%s</a></sup>%s' % (
footnoteID, footnoteNum, text)
def glyphs(self, text):
"""
>>> t = Textile()
>>> t.glyphs("apostrophe's")
'apostrophe’s'
>>> t.glyphs("back in '88")
'back in ’88'
>>> t.glyphs('foo ...')
'foo …'
>>> t.glyphs('--')
'—'
>>> t.glyphs('FooBar[tm]')
'FooBar™'
>>> t.glyphs("<p><cite>Cat's Cradle</cite> by Vonnegut</p>")
'<p><cite>Cat’s Cradle</cite> by Vonnegut</p>'
"""
# fix: hackish
text = re.sub(r'"\Z', '\" ', text)
glyph_search = (
# apostrophe's
re.compile(r"(\w)\'(\w)"),
# back in '88
re.compile(r'(\s)\'(\d+\w?)\b(?!\')'),
# single closing
re.compile(r'(\S)\'(?=\s|' + self.pnct + '|<|$)'),
# single opening
re.compile(r'\'/'),
# double closing
re.compile(r'(\S)\"(?=\s|' + self.pnct + '|<|$)'),
# double opening
re.compile(r'"'),
# 3+ uppercase acronym
re.compile(r'\b([A-Z][A-Z0-9]{2,})\b(?:[(]([^)]*)[)])'),
# 3+ uppercase
re.compile(r'\b([A-Z][A-Z\'\-]+[A-Z])(?=[\s.,\)>])'),
# ellipsis
re.compile(r'\b(\s{0,1})?\.{3}'),
# em dash
re.compile(r'(\s?)--(\s?)'),
# en dash
re.compile(r'\s-(?:\s|$)'),
# dimension sign
re.compile(r'(\d+)( ?)x( ?)(?=\d+)'),
# trademark
re.compile(r'\b ?[([]TM[])]', re.I),
# registered
re.compile(r'\b ?[([]R[])]', re.I),
# copyright
re.compile(r'\b ?[([]C[])]', re.I),
)
glyph_replace = [x % dict(self.glyph_defaults) for x in (
r'\1%(txt_apostrophe)s\2', # apostrophe's
r'\1%(txt_apostrophe)s\2', # back in '88
r'\1%(txt_quote_single_close)s', # single closing
r'%(txt_quote_single_open)s', # single opening
r'\1%(txt_quote_double_close)s', # double closing
r'%(txt_quote_double_open)s', # double opening
r'<acronym title="\2">\1</acronym>', # 3+ uppercase acronym
r'<span class="caps">\1</span>', # 3+ uppercase
r'\1%(txt_ellipsis)s', # ellipsis
r'\1%(txt_emdash)s\2', # em dash
r' %(txt_endash)s ', # en dash
r'\1\2%(txt_dimension)s\3', # dimension sign
r'%(txt_trademark)s', # trademark
r'%(txt_registered)s', # registered
r'%(txt_copyright)s', # copyright
)]
result = []
for line in re.compile(r'(<.*?>)', re.U).split(text):
if not re.search(r'<.*>', line):
for s, r in zip(glyph_search, glyph_replace):
line = s.sub(r, line)
result.append(line)
return ''.join(result)
def getRefs(self, text):
"""
Capture and store URL references in self.urlrefs.
>>> t = Textile()
>>> t.getRefs("some text [Google]http://www.google.com")
'some text '
>>> t.urlrefs
{'Google': 'http://www.google.com'}
"""
pattern = re.compile(r'(?:(?<=^)|(?<=\s))\[(.+)\]((?:http(?:s?):\/\/|\/)\S+)(?=\s|$)', re.U)
text = pattern.sub(self.refs, text)
return text
def refs(self, match):
flag, url = match.groups()
self.urlrefs[flag] = url
return ''
def checkRefs(self, url):
return self.urlrefs.get(url, url)
def isRelURL(self, url):
"""
Identify relative urls.
>>> t = Textile()
>>> t.isRelURL("http://www.google.com/")
False
>>> t.isRelURL("/foo")
True
"""
(scheme, netloc) = urlparse.urlparse(url)[0:2]
return not scheme and not netloc
def relURL(self, url):
"""
>>> t = Textile()
>>> t.relURL("http://www.google.com/")
'http://www.google.com/'
>>> t.restricted = True
>>> t.relURL("gopher://gopher.com/")
'#'
"""
scheme = urlparse.urlparse(url)[0]
if self.restricted and scheme and scheme not in self.url_schemes:
return '#'
return url
def shelve(self, text):
itemID = str(uuid.uuid4())
self.shelf[itemID] = text
return itemID
def retrieve(self, text):
"""
>>> t = Textile()
>>> id = t.shelve("foobar")
>>> t.retrieve(id)
'foobar'
"""
while True:
old = text
for k, v in self.shelf.items():
text = text.replace(k, v)
if text == old:
break
return text
def encode_html(self, text, quotes=True):
a = (
('&', '&'),
('<', '<'),
('>', '>'))
if quotes:
a = a + (("'", '''),
('"', '"'))
for k, v in a:
text = text.replace(k, v)
return text
def graf(self, text):
if not self.lite:
text = self.noTextile(text)
text = self.code(text)
if self.auto_link:
text = self.autoLink(text)
text = self.links(text)
if not self.noimage:
text = self.image(text)
text = self.lists(text)
if not self.lite:
text = self.table(text)
text = self.span(text)
text = self.footnoteRef(text)
text = self.glyphs(text)
return text.rstrip('\n')
def autoLink(self, text):
"""
>>> t = Textile()
>>> t.autoLink("http://www.ya.ru")
'"http://www.ya.ru":http://www.ya.ru'
"""
pattern = re.compile(r"""\b((?:https?://|www\d{0,3}[.]|[a-z0-9.\-]+[.][a-z]{2,4}/)(?:[^\s()<>]+|\(([^\s()<>]+|(\([^\s()<>]+\)))*\))+(?:\(([^\s()<>]+|(\([^\s()<>]+\)))*\)|[^\s`!()\[\]{};:'".,<>?«»“”‘’]))""", re.U | re.I)
return pattern.sub(r'"\1":\1', text)
def links(self, text):
"""
>>> t = Textile()
>>> t.links('fooobar "Google":http://google.com/foobar/ and hello world "flickr":http://flickr.com/photos/jsamsa/ ') # doctest: +ELLIPSIS
'fooobar ... and hello world ...'
"""
punct = '!"#$%&\'*+,-./:;=?@\\^_`|~'
pattern = r'''
(?P<pre>[\s\[{(]|[%s])? #leading text
" #opening quote
(?P<atts>%s) #block attributes
(?P<text>[^"]+?) #link text
\s?
(?:\((?P<title>[^)]+?)\)(?="))? #optional title
": #closing quote, colon
(?P<url>(?:ftp|https?)? #URL
(?: :// )?
[-\w+&@#/?=~()|!:,.;%%]*
[-\w+&@#/=~()|]
)
(?P<post>[^\w\/;]*?) #trailing text
(?=<|\s|$)
''' % (re.escape(punct), self.c)
text = re.compile(pattern, re.X | re.UNICODE).sub(self.fLink, text)
return text
def fLink(self, match):
pre, atts, text, title, url, post = match.groups()
if pre == None:
pre = ''
# assume ) at the end of the url is not actually part of the url
# unless the url also contains a (
if url.endswith(')') and not url.find('(') > -1:
post = url[-1] + post
url = url[:-1]
url = self.checkRefs(url)
url = self.encode_url(url)
atts = self.pba(atts)
if title:
atts = atts + ' title="%s"' % self.encode_html(title)
if not self.noimage:
text = self.image(text)
text = self.span(text)
text = self.glyphs(text)
url = self.relURL(url)
out = '<a href="%s"%s%s>%s</a>' % (self.encode_html(url),
atts, self.rel, text)
out = self.shelve(out)
return ''.join([pre, out, post])
def encode_url(self, url):
"""
Converts a (unicode) URL to an ASCII URL, with the domain part
IDNA-encoded and the path part %-encoded (as per RFC 3986).
Fixed version of the following code fragment from Stack Overflow:
http://stackoverflow.com/questions/804336/best-way-to-convert-a-unicode-url-to-ascii-utf-8-percent-escaped-in-python/804380#804380
"""
# turn string into unicode
if not isinstance(url, unicode):
url = url.decode('utf8')
# parse it
parsed = urlparse.urlsplit(url)
# divide the netloc further
netloc_pattern = re.compile(r"""
(?:(?P<user>[^:@]+)(?::(?P<password>[^:@]+))?@)?
(?P<host>[^:]+)
(?::(?P<port>[0-9]+))?
""", re.X | re.U)
netloc_parsed = netloc_pattern.match(parsed.netloc).groupdict()
# encode each component
scheme = parsed.scheme.encode('utf8')
user = netloc_parsed['user'] and urllib.quote(netloc_parsed['user'].encode('utf8'))
password = netloc_parsed['password'] and urllib.quote(netloc_parsed['password'].encode('utf8'))
host = netloc_parsed['host'].encode('idna')
port = netloc_parsed['port'] and netloc_parsed['port'].encode('utf8')
path = '/'.join( # could be encoded slashes!
urllib.quote(urllib.unquote(pce).encode('utf8'),'')
for pce in parsed.path.split('/')
)
query = urllib.quote(urllib.unquote(parsed.query).encode('utf8'), '=&?/')
fragment = urllib.quote(urllib.unquote(parsed.fragment).encode('utf8'))
# put it back together
netloc = ''
if user:
netloc += user
if password:
netloc += '@'+password
netloc += ':'
netloc += host
if port:
netloc += ':'+port
return urlparse.urlunsplit((scheme, netloc, path, query, fragment))
def span(self, text):
"""
>>> t = Textile()
>>> t.span(r"hello %(bob)span *strong* and **bold**% goodbye")
'hello <span class="bob">span <strong>strong</strong> and <b>bold</b></span> goodbye'
"""
qtags = (r'\*\*', r'\*', r'\?\?', r'\-', r'__',
r'_', r'%', r'\+', r'~', r'\^')
pnct = ".,\"'?!;:("
for qtag in qtags:
pattern = re.compile(r"""
(?:^|(?<=[\s>%(pnct)s])|([\[{]))
(%(qtag)s)(?!%(qtag)s)
(%(c)s)
(?::\(([^)]+?)\))?
([^\s%(qtag)s]+|\S[^%(qtag)s\n]*[^\s%(qtag)s\n])
([%(pnct)s]*)
%(qtag)s
(?:$|([\]}])|(?=%(selfpnct)s{1,2}|\s))
""" % {'qtag': qtag, 'c': self.c, 'pnct': pnct,
'selfpnct': self.pnct}, re.X)
text = pattern.sub(self.fSpan, text)
return text
def fSpan(self, match):
_, tag, atts, cite, content, end, _ = match.groups()
qtags = {'*': 'strong',
'**': 'b',
'??': 'cite',
'_': 'em',
'__': 'i',
'-': 'del',
'%': 'span',
'+': 'ins',
'~': 'sub',
'^': 'sup'}
tag = qtags[tag]
atts = self.pba(atts)
if cite:
atts = atts + ' cite="%s"' % cite
content = self.span(content)
out = "<%s%s>%s%s</%s>" % (tag, atts, content, end, tag)
return out
def image(self, text):
"""
>>> t = Textile()
>>> t.image('!/imgs/myphoto.jpg!:http://jsamsa.com')
'<a href="http://jsamsa.com" class="img"><img src="/imgs/myphoto.jpg" alt="" /></a>'
>>> t.image('!</imgs/myphoto.jpg!')
'<img src="/imgs/myphoto.jpg" style="float: left;" alt="" />'
"""
pattern = re.compile(r"""
(?:[\[{])? # pre
\! # opening !
(\<|\=|\>)? # optional alignment atts
(%s) # optional style,class atts
(?:\. )? # optional dot-space
([^\s(!]+) # presume this is the src
\s? # optional space
(?:\(([^\)]+)\))? # optional title
\! # closing
(?::(\S+))? # optional href
(?:[\]}]|(?=\s|$)) # lookahead: space or end of string
""" % self.c, re.U | re.X)
return pattern.sub(self.fImage, text)
def fImage(self, match):
# (None, '', '/imgs/myphoto.jpg', None, None)
align, atts, url, title, href = match.groups()
atts = self.pba(atts)
if align:
atts = atts + ' style="%s"' % self.iAlign[align]
if title:
atts = atts + ' title="%s" alt="%s"' % (title, title)
else:
atts = atts + ' alt=""'
if not self.isRelURL(url) and self.get_sizes:
size = imagesize.getimagesize(url)
if size:
atts += " %s" % size
if href:
href = self.checkRefs(href)
url = self.checkRefs(url)
url = self.relURL(url)
out = []
if href:
out.append('<a href="%s" class="img">' % href)
if self.html_type == 'html':
out.append('<img src="%s"%s>' % (url, atts))
else:
out.append('<img src="%s"%s />' % (url, atts))
if href:
out.append('</a>')
return ''.join(out)
def code(self, text):
text = self.doSpecial(text, '<code>', '</code>', self.fCode)
text = self.doSpecial(text, '@', '@', self.fCode)
text = self.doSpecial(text, '<pre>', '</pre>', self.fPre)
return text
def fCode(self, match):
before, text, after = match.groups()
if after == None:
after = ''
# text needs to be escaped
if not self.restricted:
text = self.encode_html(text, quotes=False)
return ''.join([before, self.shelve('<code>%s</code>' % text), after])
def fPre(self, match):
before, text, after = match.groups()
if after == None:
after = ''
# text needs to be escaped
if not self.restricted:
text = self.encode_html(text)