refactoring: renamed sat package to libervia.backend
This commit is contained in:
Goffi
parent
a15648d682
commit
d2685ba11b
345 changed files with 1293 additions and 1293 deletions
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#!/usr/bin/env python3
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# SàT plugin for Dotclear Wiki Syntax
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# Copyright (C) 2009-2021 Jérôme Poisson (goffi@goffi.org)
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# XXX: ref used: http://dotclear.org/documentation/2.0/usage/syntaxes#wiki-syntax-and-xhtml-equivalent
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from sat.core.i18n import _
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from sat.core.log import getLogger
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log = getLogger(__name__)
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from sat.core.constants import Const as C
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from sat.core import exceptions
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from twisted.words.xish import domish
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from sat.tools import xml_tools
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import copy
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import re
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PLUGIN_INFO = {
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C.PI_NAME: "Dotclear Wiki Syntax Plugin",
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C.PI_IMPORT_NAME: "SYNT_DC_WIKI",
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C.PI_TYPE: C.PLUG_TYPE_SYNTAXE,
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C.PI_DEPENDENCIES: ["TEXT_SYNTAXES"],
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C.PI_MAIN: "DCWikiSyntax",
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C.PI_HANDLER: "",
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C.PI_DESCRIPTION: _("""Implementation of Dotclear wiki syntax"""),
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}
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NOTE_TPL = "[{}]" # Note template
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NOTE_A_REV_TPL = "rev_note_{}"
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NOTE_A_TPL = "note_{}"
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ESCAPE_CHARS_BASE = r"(?P<escape_char>[][{}%|\\/*#@{{}}~$-])"
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ESCAPE_CHARS_EXTRA = (
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r"!?_+'()"
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) # These chars are not escaped in XHTML => dc_wiki conversion,
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# but are used in the other direction
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ESCAPE_CHARS = ESCAPE_CHARS_BASE.format("")
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FLAG_UL = "ul" # must be the name of the element
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FLAG_OL = "ol"
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ELT_WITH_STYLE = ("img", "div") # elements where a style attribute is expected
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wiki = [
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r"\\" + ESCAPE_CHARS_BASE.format(ESCAPE_CHARS_EXTRA),
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r"^!!!!!(?P<h1_title>.+?)$",
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r"^!!!!(?P<h2_title>.+?)$",
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r"^!!!(?P<h3_title>.+?)$",
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r"^!!(?P<h4_title>.+?)$",
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r"^!(?P<h5_title>.+?)$",
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r"^----$(?P<horizontal_rule>)",
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r"^\*(?P<list_bullet>.*?)$",
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r"^#(?P<list_ordered>.*?)$",
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r"^ (?P<preformated>.*?)$",
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r"^> +?(?P<quote>.*?)$",
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r"''(?P<emphasis>.+?)''",
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r"__(?P<strong_emphasis>.+?)__",
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r"%%%(?P<line_break>)",
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r"\+\+(?P<insertion>.+?)\+\+",
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r"--(?P<deletion>.+?)--",
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r"\[(?P<link>.+?)\]",
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r"\(\((?P<image>.+?)\)\)",
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r"~(?P<anchor>.+?)~",
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r"\?\?(?P<acronym>.+?\|.+?)\?\?",
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r"{{(?P<inline_quote>.+?)}}",
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r"@@(?P<code>.+?)@@",
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r"\$\$(?P<footnote>.+?)\$\$",
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r"(?P<text>.+?)",
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]
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wiki_re = re.compile("|".join(wiki), re.MULTILINE | re.DOTALL)
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wiki_block_level_re = re.compile(
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r"^///html(?P<html>.+?)///\n\n|(?P<paragraph>.+?)(?:\n{2,}|\Z)",
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re.MULTILINE | re.DOTALL,
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)
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class DCWikiParser(object):
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def __init__(self):
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self._footnotes = None
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for i in range(5):
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setattr(
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self,
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"parser_h{}_title".format(i),
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lambda string, parent, i=i: self._parser_title(
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string, parent, "h{}".format(i)
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),
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)
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def parser_paragraph(self, string, parent):
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p_elt = parent.addElement("p")
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self._parse(string, p_elt)
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def parser_html(self, string, parent):
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wrapped_html = "<div>{}</div>".format(string)
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try:
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div_elt = xml_tools.ElementParser()(wrapped_html)
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except domish.ParserError as e:
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log.warning("Error while parsing HTML content, ignoring it: {}".format(e))
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return
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children = list(div_elt.elements())
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if len(children) == 1 and children[0].name == "div":
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div_elt = children[0]
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parent.addChild(div_elt)
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def parser_escape_char(self, string, parent):
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parent.addContent(string)
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def _parser_title(self, string, parent, name):
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elt = parent.addElement(name)
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elt.addContent(string)
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def parser_horizontal_rule(self, string, parent):
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parent.addElement("hr")
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def _parser_list(self, string, parent, list_type):
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depth = 0
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while string[depth : depth + 1] == "*":
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depth += 1
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string = string[depth:].lstrip()
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for i in range(depth + 1):
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list_elt = getattr(parent, list_type)
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if not list_elt:
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parent = parent.addElement(list_type)
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else:
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parent = list_elt
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li_elt = parent.addElement("li")
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self._parse(string, li_elt)
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def parser_list_bullet(self, string, parent):
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self._parser_list(string, parent, "ul")
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def parser_list_ordered(self, string, parent):
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self._parser_list(string, parent, "ol")
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def parser_preformated(self, string, parent):
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pre_elt = parent.pre
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if pre_elt is None:
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pre_elt = parent.addElement("pre")
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else:
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# we are on a new line, and this is important for <pre/>
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pre_elt.addContent("\n")
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pre_elt.addContent(string)
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def parser_quote(self, string, parent):
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blockquote_elt = parent.blockquote
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if blockquote_elt is None:
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blockquote_elt = parent.addElement("blockquote")
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p_elt = blockquote_elt.p
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if p_elt is None:
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p_elt = blockquote_elt.addElement("p")
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else:
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string = "\n" + string
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self._parse(string, p_elt)
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def parser_emphasis(self, string, parent):
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em_elt = parent.addElement("em")
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self._parse(string, em_elt)
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def parser_strong_emphasis(self, string, parent):
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strong_elt = parent.addElement("strong")
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self._parse(string, strong_elt)
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def parser_line_break(self, string, parent):
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parent.addElement("br")
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def parser_insertion(self, string, parent):
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ins_elt = parent.addElement("ins")
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self._parse(string, ins_elt)
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def parser_deletion(self, string, parent):
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del_elt = parent.addElement("del")
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self._parse(string, del_elt)
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def parser_link(self, string, parent):
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url_data = string.split("|")
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a_elt = parent.addElement("a")
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length = len(url_data)
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if length == 1:
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url = url_data[0]
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a_elt["href"] = url
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a_elt.addContent(url)
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else:
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name = url_data[0]
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url = url_data[1]
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a_elt["href"] = url
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a_elt.addContent(name)
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if length >= 3:
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a_elt["lang"] = url_data[2]
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if length >= 4:
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a_elt["title"] = url_data[3]
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if length > 4:
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log.warning("too much data for url, ignoring extra data")
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def parser_image(self, string, parent):
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image_data = string.split("|")
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img_elt = parent.addElement("img")
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for idx, attribute in enumerate(("src", "alt", "position", "longdesc")):
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try:
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data = image_data[idx]
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except IndexError:
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break
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if attribute != "position":
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img_elt[attribute] = data
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else:
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data = data.lower()
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if data in ("l", "g"):
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img_elt["style"] = "display:block; float:left; margin:0 1em 1em 0"
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elif data in ("r", "d"):
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img_elt["style"] = "display:block; float:right; margin:0 0 1em 1em"
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elif data == "c":
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img_elt[
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"style"
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] = "display:block; margin-left:auto; margin-right:auto"
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else:
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log.warning("bad position argument for image, ignoring it")
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def parser_anchor(self, string, parent):
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a_elt = parent.addElement("a")
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a_elt["id"] = string
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def parser_acronym(self, string, parent):
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acronym, title = string.split("|", 1)
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acronym_elt = parent.addElement("acronym", content=acronym)
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acronym_elt["title"] = title
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def parser_inline_quote(self, string, parent):
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quote_data = string.split("|")
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quote = quote_data[0]
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q_elt = parent.addElement("q", content=quote)
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for idx, attribute in enumerate(("lang", "cite"), 1):
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try:
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data = quote_data[idx]
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except IndexError:
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break
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q_elt[attribute] = data
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def parser_code(self, string, parent):
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parent.addElement("code", content=string)
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def parser_footnote(self, string, parent):
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idx = len(self._footnotes) + 1
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note_txt = NOTE_TPL.format(idx)
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sup_elt = parent.addElement("sup")
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sup_elt["class"] = "note"
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a_elt = sup_elt.addElement("a", content=note_txt)
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a_elt["id"] = NOTE_A_REV_TPL.format(idx)
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a_elt["href"] = "#{}".format(NOTE_A_TPL.format(idx))
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p_elt = domish.Element((None, "p"))
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a_elt = p_elt.addElement("a", content=note_txt)
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a_elt["id"] = NOTE_A_TPL.format(idx)
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a_elt["href"] = "#{}".format(NOTE_A_REV_TPL.format(idx))
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self._parse(string, p_elt)
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# footnotes are actually added at the end of the parsing
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self._footnotes.append(p_elt)
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def parser_text(self, string, parent):
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parent.addContent(string)
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def _parse(self, string, parent, block_level=False):
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regex = wiki_block_level_re if block_level else wiki_re
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for match in regex.finditer(string):
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if match.lastgroup is None:
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parent.addContent(string)
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return
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matched = match.group(match.lastgroup)
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try:
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parser = getattr(self, "parser_{}".format(match.lastgroup))
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except AttributeError:
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log.warning("No parser found for {}".format(match.lastgroup))
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# parent.addContent(string)
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continue
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parser(matched, parent)
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def parse(self, string):
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self._footnotes = []
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div_elt = domish.Element((None, "div"))
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self._parse(string, parent=div_elt, block_level=True)
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if self._footnotes:
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foot_div_elt = div_elt.addElement("div")
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foot_div_elt["class"] = "footnotes"
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# we add a simple horizontal rule which can be customized
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# with footnotes class, instead of a text which would need
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# to be translated
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foot_div_elt.addElement("hr")
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for elt in self._footnotes:
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foot_div_elt.addChild(elt)
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return div_elt
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class XHTMLParser(object):
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def __init__(self):
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self.flags = None
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self.toto = 0
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self.footnotes = None # will hold a map from url to buffer id
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for i in range(1, 6):
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setattr(
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self,
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"parser_h{}".format(i),
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lambda elt, buf, level=i: self.parser_heading(elt, buf, level),
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)
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def parser_a(self, elt, buf):
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try:
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url = elt["href"]
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except KeyError:
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# probably an anchor
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try:
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id_ = elt["id"]
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if not id_:
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# we don't want empty values
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raise KeyError
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except KeyError:
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self.parser_generic(elt, buf)
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else:
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buf.append("~~{}~~".format(id_))
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return
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link_data = [url]
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name = str(elt)
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if name != url:
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link_data.insert(0, name)
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lang = elt.getAttribute("lang")
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title = elt.getAttribute("title")
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if lang is not None:
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link_data.append(lang)
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elif title is not None:
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link_data.appand("")
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if title is not None:
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link_data.append(title)
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buf.append("[")
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buf.append("|".join(link_data))
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buf.append("]")
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def parser_acronym(self, elt, buf):
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try:
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title = elt["title"]
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except KeyError:
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log.debug("Acronyme without title, using generic parser")
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self.parser_generic(elt, buf)
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return
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buf.append("??{}|{}??".format(str(elt), title))
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def parser_blockquote(self, elt, buf):
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# we remove wrapping <p> to avoid empty line with "> "
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children = list(
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[child for child in elt.children if str(child).strip() not in ("", "\n")]
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)
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if len(children) == 1 and children[0].name == "p":
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elt = children[0]
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tmp_buf = []
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self.parse_children(elt, tmp_buf)
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blockquote = "> " + "\n> ".join("".join(tmp_buf).split("\n"))
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buf.append(blockquote)
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def parser_br(self, elt, buf):
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buf.append("%%%")
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def parser_code(self, elt, buf):
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buf.append("@@")
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self.parse_children(elt, buf)
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buf.append("@@")
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def parser_del(self, elt, buf):
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buf.append("--")
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self.parse_children(elt, buf)
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buf.append("--")
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def parser_div(self, elt, buf):
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if elt.getAttribute("class") == "footnotes":
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self.parser_footnote(elt, buf)
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else:
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self.parse_children(elt, buf, block=True)
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def parser_em(self, elt, buf):
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buf.append("''")
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self.parse_children(elt, buf)
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buf.append("''")
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def parser_h6(self, elt, buf):
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# XXX: <h6/> heading is not managed by wiki syntax
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# so we handle it with a <h5/>
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elt = copy.copy(elt) # we don't want to change to original element
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elt.name = "h5"
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self._parse(elt, buf)
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def parser_hr(self, elt, buf):
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buf.append("\n----\n")
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def parser_img(self, elt, buf):
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try:
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url = elt["src"]
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except KeyError:
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log.warning("Ignoring <img/> without src")
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return
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image_data = [url]
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alt = elt.getAttribute("alt")
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style = elt.getAttribute("style", "")
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desc = elt.getAttribute("longdesc")
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if "0 1em 1em 0" in style:
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position = "L"
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elif "0 0 1em 1em" in style:
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position = "R"
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elif "auto" in style:
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position = "C"
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else:
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position = None
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if alt:
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image_data.append(alt)
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elif position or desc:
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image_data.append("")
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if position:
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image_data.append(position)
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elif desc:
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image_data.append("")
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if desc:
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image_data.append(desc)
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buf.append("((")
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buf.append("|".join(image_data))
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buf.append("))")
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def parser_ins(self, elt, buf):
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buf.append("++")
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self.parse_children(elt, buf)
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buf.append("++")
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def parser_li(self, elt, buf):
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flag = None
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current_flag = None
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bullets = []
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for flag in reversed(self.flags):
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if flag in (FLAG_UL, FLAG_OL):
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if current_flag is None:
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current_flag = flag
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if flag == current_flag:
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bullets.append("*" if flag == FLAG_UL else "#")
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else:
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break
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||||
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if flag != current_flag and buf[-1] == " ":
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# this trick is to avoid a space when we switch
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# from (un)ordered to the other type on the same row
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# e.g. *# unorder + ordered item
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del buf[-1]
|
||||
|
||||
buf.extend(bullets)
|
||||
|
||||
buf.append(" ")
|
||||
self.parse_children(elt, buf)
|
||||
buf.append("\n")
|
||||
|
||||
def parser_ol(self, elt, buf):
|
||||
self.parser_list(elt, buf, FLAG_OL)
|
||||
|
||||
def parser_p(self, elt, buf):
|
||||
self.parse_children(elt, buf)
|
||||
buf.append("\n\n")
|
||||
|
||||
def parser_pre(self, elt, buf):
|
||||
pre = "".join(
|
||||
[
|
||||
child.toXml() if domish.IElement.providedBy(child) else str(child)
|
||||
for child in elt.children
|
||||
]
|
||||
)
|
||||
pre = " " + "\n ".join(pre.split("\n"))
|
||||
buf.append(pre)
|
||||
|
||||
def parser_q(self, elt, buf):
|
||||
quote_data = [str(elt)]
|
||||
|
||||
lang = elt.getAttribute("lang")
|
||||
cite = elt.getAttribute("url")
|
||||
|
||||
if lang:
|
||||
quote_data.append(lang)
|
||||
elif cite:
|
||||
quote_data.append("")
|
||||
|
||||
if cite:
|
||||
quote_data.append(cite)
|
||||
|
||||
buf.append("{{")
|
||||
buf.append("|".join(quote_data))
|
||||
buf.append("}}")
|
||||
|
||||
def parser_span(self, elt, buf):
|
||||
self.parse_children(elt, buf, block=True)
|
||||
|
||||
def parser_strong(self, elt, buf):
|
||||
buf.append("__")
|
||||
self.parse_children(elt, buf)
|
||||
buf.append("__")
|
||||
|
||||
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 str(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.parser_generic(elt, buf)
|
||||
return
|
||||
# this looks like a footnote
|
||||
buf.append("$$")
|
||||
buf.append(" ") # placeholder
|
||||
self.footnotes[note_id] = len(buf) - 1
|
||||
buf.append("$$")
|
||||
else:
|
||||
self.parser_generic(elt, buf)
|
||||
|
||||
def parser_ul(self, elt, buf):
|
||||
self.parser_list(elt, buf, FLAG_UL)
|
||||
|
||||
def parser_list(self, elt, buf, type_):
|
||||
self.flags.append(type_)
|
||||
self.parse_children(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("flag has been removed by an other parser")
|
||||
|
||||
def parser_heading(self, elt, buf, level):
|
||||
buf.append((6 - level) * "!")
|
||||
for child in elt.children:
|
||||
# we ignore other elements for a Hx title
|
||||
self.parser_text(child, buf)
|
||||
buf.append("\n")
|
||||
|
||||
def parser_footnote(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(
|
||||
"<p/> element doesn't contain <a/> in footnote, ignoring it"
|
||||
)
|
||||
continue
|
||||
try:
|
||||
note_idx = self.footnotes[a_elt["id"]]
|
||||
except KeyError:
|
||||
log.warning("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.parse_children(dummy_elt, note_buf)
|
||||
# now we can replace the placeholder
|
||||
buf[note_idx] = "".join(note_buf)
|
||||
|
||||
def parser_text(self, txt, buf, keep_whitespaces=False):
|
||||
txt = str(txt)
|
||||
if not keep_whitespaces:
|
||||
# we get text and only let one inter word space
|
||||
txt = " ".join(txt.split())
|
||||
txt = re.sub(ESCAPE_CHARS, r"\\\1", txt)
|
||||
if txt:
|
||||
buf.append(txt)
|
||||
return txt
|
||||
|
||||
def parser_generic(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("\n\n///html\n{}\n///\n\n".format(elt.toXml()))
|
||||
|
||||
def parse_children(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(" ")
|
||||
if domish.IElement.providedBy(child):
|
||||
self._parse(child, buf)
|
||||
first_visible = False
|
||||
else:
|
||||
appended = self.parser_text(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.parser_generic
|
||||
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.parser_generic
|
||||
parser(elt, buf)
|
||||
|
||||
def parse(self, elt):
|
||||
self.flags = []
|
||||
self.footnotes = {}
|
||||
buf = []
|
||||
self._parse(elt, buf)
|
||||
return "".join(buf)
|
||||
|
||||
def parseString(self, string):
|
||||
wrapped_html = "<div>{}</div>".format(string)
|
||||
try:
|
||||
div_elt = xml_tools.ElementParser()(wrapped_html)
|
||||
except domish.ParserError as e:
|
||||
log.warning("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(_("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.add_syntax(
|
||||
self.SYNTAX_NAME, self.parse_wiki, self.parse_xhtml, [self._stx.OPT_NO_THREAD]
|
||||
)
|
||||
|
||||
def parse_wiki(self, wiki_stx):
|
||||
div_elt = self._dc_parser.parse(wiki_stx)
|
||||
return div_elt.toXml()
|
||||
|
||||
def parse_xhtml(self, xhtml):
|
||||
return self._xhtml_parser.parseString(xhtml)
|
||||
Loading…
Reference in a new issue