Mercurial > libervia-backend
diff sat/plugins/plugin_syntax_wiki_dotclear.py @ 2562:26edcf3a30eb
core, setup: huge cleaning:
- moved directories from src and frontends/src to sat and sat_frontends, which is the recommanded naming convention
- move twisted directory to root
- removed all hacks from setup.py, and added missing dependencies, it is now clean
- use https URL for website in setup.py
- removed "Environment :: X11 Applications :: GTK", as wix is deprecated and removed
- renamed sat.sh to sat and fixed its installation
- added python_requires to specify Python version needed
- replaced glib2reactor which use deprecated code by gtk3reactor
sat can now be installed directly from virtualenv without using --system-site-packages anymore \o/
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Mon, 02 Apr 2018 19:44:50 +0200 |
| parents | src/plugins/plugin_syntax_wiki_dotclear.py@0046283a285d |
| children | 56f94936df1e |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/sat/plugins/plugin_syntax_wiki_dotclear.py Mon Apr 02 19:44:50 2018 +0200 @@ -0,0 +1,647 @@ +#!/usr/bin/env python2 +# -*- coding: utf-8 -*- + +# SàT plugin for Dotclear Wiki Syntax +# Copyright (C) 2009-2018 Jérôme Poisson (goffi@goffi.org) + +# This program is free software: you can redistribute it and/or modify +# it under the terms of the GNU Affero General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU Affero General Public License for more details. + +# You should have received a copy of the GNU Affero General Public License +# along with this program. If not, see <http://www.gnu.org/licenses/>. + +# XXX: ref used: http://dotclear.org/documentation/2.0/usage/syntaxes#wiki-syntax-and-xhtml-equivalent + +from sat.core.i18n import _ +from sat.core.log import getLogger +log = getLogger(__name__) +from sat.core.constants import Const as C +from sat.core import exceptions +from twisted.words.xish import domish +from sat.tools import xml_tools +import copy +import re + +PLUGIN_INFO = { + C.PI_NAME: "Dotclear Wiki Syntax Plugin", + C.PI_IMPORT_NAME: "SYNT_DC_WIKI", + C.PI_TYPE: C.PLUG_TYPE_SYNTAXE, + C.PI_DEPENDENCIES: ["TEXT-SYNTAXES"], + C.PI_MAIN: "DCWikiSyntax", + C.PI_HANDLER: "", + C.PI_DESCRIPTION: _("""Implementation of Dotclear wiki syntax""") +} + +NOTE_TPL = u'[{}]' # Note template +NOTE_A_REV_TPL = u'rev_note_{}' +NOTE_A_TPL = u'note_{}' +ESCAPE_CHARS_BASE = r"(?P<escape_char>[][{}%|\\/*#@{{}}~$-])" +ESCAPE_CHARS_EXTRA = r"!?_+'()" # These chars are not escaped in XHTML => dc_wiki conversion, + # but are used in the other direction +ESCAPE_CHARS = ESCAPE_CHARS_BASE.format('') +FLAG_UL = 'ul' # must be the name of the element +FLAG_OL = 'ol' +ELT_WITH_STYLE = ('img', 'div') # elements where a style attribute is expected + +wiki = [r'\\' + ESCAPE_CHARS_BASE.format(ESCAPE_CHARS_EXTRA), + r"^!!!!!(?P<h1_title>.+?)$", + r"^!!!!(?P<h2_title>.+?)$", + r"^!!!(?P<h3_title>.+?)$", + r"^!!(?P<h4_title>.+?)$", + r"^!(?P<h5_title>.+?)$", + r"^----$(?P<horizontal_rule>)", + r"^\*(?P<list_bullet>.*?)$", + r"^#(?P<list_ordered>.*?)$", + r"^ (?P<preformated>.*?)$", + r"^> +?(?P<quote>.*?)$", + r"''(?P<emphasis>.+?)''", + r"__(?P<strong_emphasis>.+?)__", + r"%%%(?P<line_break>)", + r"\+\+(?P<insertion>.+?)\+\+", + r"--(?P<deletion>.+?)--", + r"\[(?P<link>.+?)\]", + r"\(\((?P<image>.+?)\)\)", + r"~(?P<anchor>.+?)~", + r"\?\?(?P<acronym>.+?\|.+?)\?\?", + r"{{(?P<inline_quote>.+?)}}", + r"@@(?P<code>.+?)@@", + r"\$\$(?P<footnote>.+?)\$\$", + r"(?P<text>.+?)", + ] + +wiki_re = re.compile('|'.join(wiki), re.MULTILINE | re.DOTALL) +wiki_block_level_re = re.compile(r"^///html(?P<html>.+?)///\n\n|(?P<paragraph>.+?)(?:\n{2,}|\Z)", re.MULTILINE | re.DOTALL) + + +class DCWikiParser(object): + + def __init__(self): + self._footnotes = None + for i in xrange(5): + setattr(self, + 'parser_h{}_title'.format(i), + lambda string, parent, i=i: self._parser_title(string, parent, 'h{}'.format(i))) + + def parser_paragraph(self, string, parent): + p_elt = parent.addElement('p') + self._parse(string, p_elt) + + def parser_html(self, string, parent): + wrapped_html = "<div>{}</div>".format(string) + try: + div_elt = xml_tools.ElementParser()(wrapped_html) + except domish.ParserError as e: + log.warning(u"Error while parsing HTML content, ignoring it: {}".format(e)) + return + children = list(div_elt.elements()) + if len(children) == 1 and children[0].name == 'div': + div_elt = children[0] + parent.addChild(div_elt) + + def parser_escape_char(self, string, parent): + parent.addContent(string) + + def _parser_title(self, string, parent, name): + elt = parent.addElement(name) + elt.addContent(string) + + def parser_horizontal_rule(self, string, parent): + parent.addElement('hr') + + def _parser_list(self, string, parent, list_type): + depth = 0 + while string[depth:depth+1] == '*': + depth +=1 + + string = string[depth:].lstrip() + + for i in xrange(depth+1): + list_elt = getattr(parent, list_type) + if not list_elt: + parent = parent.addElement(list_type) + else: + parent = list_elt + + li_elt = parent.addElement('li') + self._parse(string, li_elt) + + def parser_list_bullet(self, string, parent): + self._parser_list(string, parent, 'ul') + + def parser_list_ordered(self, string, parent): + self._parser_list(string, parent, 'ol') + + def parser_preformated(self, string, parent): + pre_elt = parent.pre + if pre_elt is None: + pre_elt = parent.addElement('pre') + else: + # we are on a new line, and this is important for <pre/> + pre_elt.addContent('\n') + pre_elt.addContent(string) + + def parser_quote(self, string, parent): + blockquote_elt = parent.blockquote + if blockquote_elt is None: + blockquote_elt = parent.addElement('blockquote') + p_elt = blockquote_elt.p + if p_elt is None: + p_elt = blockquote_elt.addElement('p') + else: + string = u'\n' + string + + self._parse(string, p_elt) + + def parser_emphasis(self, string, parent): + em_elt = parent.addElement('em') + self._parse(string, em_elt) + + def parser_strong_emphasis(self, string, parent): + strong_elt = parent.addElement('strong') + self._parse(string, strong_elt) + + def parser_line_break(self, string, parent): + parent.addElement('br') + + def parser_insertion(self, string, parent): + ins_elt = parent.addElement('ins') + self._parse(string, ins_elt) + + def parser_deletion(self, string, parent): + del_elt = parent.addElement('del') + self._parse(string, del_elt) + + def parser_link(self, string, parent): + url_data = string.split(u'|') + a_elt = parent.addElement('a') + length = len(url_data) + if length == 1: + url = url_data[0] + a_elt['href'] = url + a_elt.addContent(url) + else: + name = url_data[0] + url = url_data[1] + a_elt['href'] = url + a_elt.addContent(name) + if length >= 3: + a_elt['lang'] = url_data[2] + if length >= 4: + a_elt['title'] = url_data[3] + if length > 4: + log.warning(u"too much data for url, ignoring extra data") + + def parser_image(self, string, parent): + image_data = string.split(u'|') + img_elt = parent.addElement('img') + + for idx, attribute in enumerate(('src', 'alt', 'position', 'longdesc')): + try: + data = image_data[idx] + except IndexError: + break + + if attribute != 'position': + img_elt[attribute] = data + else: + data = data.lower() + if data in ('l', 'g'): + img_elt['style'] = "display:block; float:left; margin:0 1em 1em 0" + elif data in ('r', 'd'): + img_elt['style'] = "display:block; float:right; margin:0 0 1em 1em" + elif data == 'c': + img_elt['style'] = "display:block; margin-left:auto; margin-right:auto" + else: + log.warning(u"bad position argument for image, ignoring it") + + def parser_anchor(self, string, parent): + a_elt = parent.addElement('a') + a_elt['id'] = string + + def parser_acronym(self, string, parent): + acronym, title = string.split(u'|',1) + acronym_elt = parent.addElement('acronym', content=acronym) + acronym_elt['title'] = title + + def parser_inline_quote(self, string, parent): + quote_data = string.split(u'|') + quote = quote_data[0] + q_elt = parent.addElement('q', content=quote) + for idx, attribute in enumerate(('lang', 'cite'), 1): + try: + data = quote_data[idx] + except IndexError: + break + q_elt[attribute] = data + + def parser_code(self, string, parent): + parent.addElement('code', content=string) + + def parser_footnote(self, string, parent): + idx = len(self._footnotes) + 1 + note_txt = NOTE_TPL.format(idx) + sup_elt = parent.addElement('sup') + sup_elt['class'] = 'note' + a_elt = sup_elt.addElement('a', content=note_txt) + a_elt['id'] = NOTE_A_REV_TPL.format(idx) + a_elt['href'] = u'#{}'.format(NOTE_A_TPL.format(idx)) + + p_elt = domish.Element((None, 'p')) + a_elt = p_elt.addElement('a', content=note_txt) + a_elt['id'] = NOTE_A_TPL.format(idx) + a_elt['href'] = u'#{}'.format(NOTE_A_REV_TPL.format(idx)) + self._parse(string, p_elt) + # footnotes are actually added at the end of the parsing + self._footnotes.append(p_elt) + + def parser_text(self, string, parent): + parent.addContent(string) + + def _parse(self, string, parent, block_level=False): + regex = wiki_block_level_re if block_level else wiki_re + + for match in regex.finditer(string): + if match.lastgroup is None: + parent.addContent(string) + return + matched = match.group(match.lastgroup) + try: + parser = getattr(self, 'parser_{}'.format(match.lastgroup)) + except AttributeError: + log.warning(u"No parser found for {}".format(match.lastgroup)) + # parent.addContent(string) + continue + parser(matched, parent) + + def parse(self, string): + self._footnotes = [] + div_elt = domish.Element((None, 'div')) + self._parse(string, parent=div_elt, block_level=True) + if self._footnotes: + foot_div_elt = div_elt.addElement('div') + foot_div_elt['class'] = 'footnotes' + # we add a simple horizontal rule which can be customized + # with footnotes class, instead of a text which would need + # to be translated + foot_div_elt.addElement('hr') + for elt in self._footnotes: + foot_div_elt.addChild(elt) + return div_elt + + +class XHTMLParser(object): + + def __init__(self): + self.flags = None + self.toto = 0 + self.footnotes = None # will hold a map from url to buffer id + for i in xrange(1,6): + setattr(self, + 'parser_h{}'.format(i), + lambda elt, buf, level=i: self.parserHeading(elt, buf, level) + ) + + def parser_a(self, elt, buf): + try: + url = elt['href'] + except KeyError: + # probably an anchor + try: + id_ = elt['id'] + if not id_: + # we don't want empty values + raise KeyError + except KeyError: + self.parserGeneric(elt, buf) + else: + buf.append(u'~~{}~~'.format(id_)) + return + + link_data = [url] + name = unicode(elt) + if name != url: + link_data.insert(0, name) + + lang = elt.getAttribute('lang') + title = elt.getAttribute('title') + if lang is not None: + link_data.append(lang) + elif title is not None: + link_data.appand(u'') + if title is not None: + link_data.append(title) + buf.append(u'[') + buf.append(u'|'.join(link_data)) + buf.append(u']') + + def parser_acronym(self, elt, buf): + try: + title = elt['title'] + except KeyError: + log.debug(u"Acronyme without title, using generic parser") + self.parserGeneric(elt, buf) + return + buf.append(u'??{}|{}??'.format(unicode(elt), title)) + + def parser_blockquote(self, elt, buf): + # we remove wrapping <p> to avoid empty line with "> " + children = list([child for child in elt.children if unicode(child).strip() not in ('', '\n')]) + if len(children) == 1 and children[0].name == 'p': + elt = children[0] + tmp_buf = [] + self.parseChildren(elt, tmp_buf) + blockquote = u'> ' + u'\n> '.join(u''.join(tmp_buf).split('\n')) + buf.append(blockquote) + + def parser_br(self, elt, buf): + buf.append(u'%%%') + + def parser_code(self, elt, buf): + buf.append(u'@@') + self.parseChildren(elt, buf) + buf.append(u'@@') + + def parser_del(self, elt, buf): + buf.append(u'--') + self.parseChildren(elt, buf) + buf.append(u'--') + + def parser_div(self, elt, buf): + if elt.getAttribute('class') == 'footnotes': + self.parserFootnote(elt, buf) + else: + self.parseChildren(elt, buf, block=True) + + def parser_em(self, elt, buf): + buf.append(u"''") + self.parseChildren(elt, buf) + buf.append(u"''") + + def parser_h6(self, elt, buf): + # XXX: <h6/> heading is not managed by wiki syntax + # so we handle it with a <h5/> + elt = copy.copy(elt) # we don't want to change to original element + elt.name = 'h5' + self._parse(elt, buf) + + def parser_hr(self, elt, buf): + buf.append(u'\n----\n') + + def parser_img(self, elt, buf): + try: + url = elt['src'] + except KeyError: + log.warning(u"Ignoring <img/> without src") + return + + image_data=[url] + + alt = elt.getAttribute('alt') + style = elt.getAttribute('style', '') + desc = elt.getAttribute('longdesc') + + if '0 1em 1em 0' in style: + position = 'L' + elif '0 0 1em 1em' in style: + position = 'R' + elif 'auto' in style: + position = 'C' + else: + position = None + + if alt: + image_data.append(alt) + elif position or desc: + image_data.append(u'') + + if position: + image_data.append(position) + elif desc: + image_data.append(u'') + + if desc: + image_data.append(desc) + + buf.append(u'((') + buf.append(u'|'.join(image_data)) + buf.append(u'))') + + def parser_ins(self, elt, buf): + buf.append(u'++') + self.parseChildren(elt, buf) + buf.append(u'++') + + def parser_li(self, elt, buf): + flag = None + current_flag = None + bullets = [] + for flag in reversed(self.flags): + if flag in (FLAG_UL, FLAG_OL): + if current_flag is None: + current_flag = flag + if flag == current_flag: + bullets.append(u'*' if flag == FLAG_UL else u'#') + else: + break + + if flag != current_flag and buf[-1] == u' ': + # this trick is to avoid a space when we switch + # from (un)ordered to the other type on the same row + # e.g. *# unorder + ordered item + del buf[-1] + + buf.extend(bullets) + + buf.append(u' ') + self.parseChildren(elt, buf) + buf.append(u'\n') + + def parser_ol(self, elt, buf): + self.parserList(elt, buf, FLAG_OL) + + def parser_p(self, elt, buf): + self.parseChildren(elt, buf) + buf.append(u'\n\n') + + def parser_pre(self, elt, buf): + pre = u''.join([child.toXml() if domish.IElement.providedBy(child) else unicode(child) for child in elt.children]) + pre = u' ' + u'\n '.join(pre.split('\n')) + buf.append(pre) + + def parser_q(self, elt, buf): + quote_data=[unicode(elt)] + + lang = elt.getAttribute('lang') + cite = elt.getAttribute('url') + + if lang: + quote_data.append(lang) + elif cite: + quote_data.append(u'') + + if cite: + quote_data.append(cite) + + buf.append(u'{{') + buf.append(u'|'.join(quote_data)) + buf.append(u'}}') + + def parser_span(self, elt, buf): + self.parseChildren(elt, buf, block=True) + + def parser_strong(self, elt, buf): + buf.append(u'__') + self.parseChildren(elt, buf) + buf.append(u'__') + + def parser_sup(self, elt, buf): + # sup is mainly used for footnotes, so we check if we have an anchor inside + children = list([child for child in elt.children if unicode(child).strip() not in ('', '\n')]) + if (len(children) == 1 and domish.IElement.providedBy(children[0]) + and children[0].name == 'a' and '#' in children[0].getAttribute('href', '')): + url = children[0]['href'] + note_id = url[url.find('#')+1:] + if not note_id: + log.warning("bad link found in footnote") + self.parserGeneric(elt, buf) + return + # this looks like a footnote + buf.append(u'$$') + buf.append(u' ') # placeholder + self.footnotes[note_id] = len(buf) - 1 + buf.append(u'$$') + else: + self.parserGeneric(elt, buf) + + def parser_ul(self, elt, buf): + self.parserList(elt, buf, FLAG_UL) + + def parserList(self, elt, buf, type_): + self.flags.append(type_) + self.parseChildren(elt, buf, block=True) + idx = 0 + for flag in reversed(self.flags): + idx -= 1 + if flag == type_: + del self.flags[idx] + break + + if idx == 0: + raise exceptions.InternalError(u"flag has been removed by an other parser") + + def parserHeading(self, elt, buf, level): + buf.append((6-level) * u'!') + for child in elt.children: + # we ignore other elements for a Hx title + self.parserText(child, buf) + buf.append(u'\n') + + def parserFootnote(self, elt, buf): + for elt in elt.elements(): + # all children other than <p/> are ignored + if elt.name == 'p': + a_elt = elt.a + if a_elt is None: + log.warning(u"<p/> element doesn't contain <a/> in footnote, ignoring it") + continue + try: + note_idx = self.footnotes[a_elt['id']] + except KeyError: + log.warning(u"Note id doesn't match any known note, ignoring it") + # we create a dummy element to parse all children after the <a/> + dummy_elt = domish.Element((None, 'note')) + a_idx = elt.children.index(a_elt) + dummy_elt.children = elt.children[a_idx+1:] + note_buf = [] + self.parseChildren(dummy_elt, note_buf) + # now we can replace the placeholder + buf[note_idx] = u''.join(note_buf) + + def parserText(self, txt, buf, keep_whitespaces=False): + txt = unicode(txt) + if not keep_whitespaces: + # we get text and only let one inter word space + txt = u' '.join(txt.split()) + txt = re.sub(ESCAPE_CHARS, r'\\\1', txt) + if txt: + buf.append(txt) + return txt + + def parserGeneric(self, elt, buf): + # as dotclear wiki syntax handle arbitrary XHTML code + # we use this feature to add elements that we don't know + buf.append(u"\n\n///html\n{}\n///\n\n".format(elt.toXml())) + + def parseChildren(self, elt, buf, block=False): + first_visible = True + for child in elt.children: + if not block and not first_visible and buf and buf[-1][-1] not in (' ','\n'): + # we add separation if it isn't already there + buf.append(u' ') + if domish.IElement.providedBy(child): + self._parse(child, buf) + first_visible = False + else: + appended = self.parserText(child, buf) + if appended: + first_visible = False + + def _parse(self, elt, buf): + elt_name = elt.name.lower() + style = elt.getAttribute('style') + if style and elt_name not in ELT_WITH_STYLE: + # if we have style we use generic parser to put raw HTML + # to avoid losing it + parser = self.parserGeneric + else: + try: + parser = getattr(self, "parser_{}".format(elt_name)) + except AttributeError: + log.debug("Can't find parser for {} element, using generic one".format(elt.name)) + parser = self.parserGeneric + parser(elt, buf) + + def parse(self, elt): + self.flags = [] + self.footnotes = {} + buf = [] + self._parse(elt, buf) + return u''.join(buf) + + def parseString(self, string): + wrapped_html = u"<div>{}</div>".format(string) + try: + div_elt = xml_tools.ElementParser()(wrapped_html) + except domish.ParserError as e: + log.warning(u"Error while parsing HTML content: {}".format(e)) + return + children = list(div_elt.elements()) + if len(children) == 1 and children[0].name == 'div': + div_elt = children[0] + return self.parse(div_elt) + + +class DCWikiSyntax(object): + SYNTAX_NAME = "wiki_dotclear" + + def __init__(self, host): + log.info(_(u"Dotclear wiki syntax plugin initialization")) + self.host = host + self._dc_parser = DCWikiParser() + self._xhtml_parser = XHTMLParser() + self._stx = self.host.plugins["TEXT-SYNTAXES"] + self._stx.addSyntax(self.SYNTAX_NAME, self.parseWiki, self.parseXHTML, [self._stx.OPT_NO_THREAD]) + + def parseWiki(self, wiki_stx): + div_elt = self._dc_parser.parse(wiki_stx) + return div_elt.toXml() + + def parseXHTML(self, xhtml): + return self._xhtml_parser.parseString(xhtml)