rename parser/parsers module, add get_parsers() with preference_order

weboob/tools/parsers/htmlparser.py

@@ -0,0 +1,95 @@
+# -*- coding: utf-8 -*-
+
+"""
+Copyright(C) 2010  Romain Bignon
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, version 3 of the License.
+
+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 General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+"""
+
+from HTMLParser import HTMLParser as _HTMLParser
+import htmlentitydefs
+try:
+    from xml.etree import cElementTree as ElementTree
+except ImportError:
+    from xml.etree import ElementTree
+
+from .iparser import IParser
+
+
+__all__ = ['HTMLParser']
+
+
+class HTMLTreeBuilder(_HTMLParser):
+    def __init__(self, encoding=None):
+        _HTMLParser.__init__(self)
+        self._target = ElementTree.TreeBuilder()
+
+    def doctype(self, name, pubid, system):
+        pass
+
+    def close(self):
+        tree = self._target.close()
+        return tree
+
+    def handle_starttag(self, tag, attrs):
+        self._target.start(tag, dict(attrs))
+
+    def handle_startendtag(self, tag, attrs):
+        self._target.start(tag, dict(attrs))
+        self._target.end(tag)
+
+    def handle_charref(self, name):
+        self._target.data(unichr(int(name)))
+
+    def handle_entityref(self, name):
+        try:
+            self._target.data(unichr(htmlentitydefs.name2codepoint[name]))
+        except KeyError:
+            self._target.data('&' + name)
+
+    def handle_data(self, data):
+        self._target.data(data)
+
+    def handle_endtag(self, tag):
+        try:
+            self._target.end(tag)
+        except:
+            pass
+
+class HTMLParser(IParser):
+    def parse(self, data, encoding=None):
+        parser = HTMLTreeBuilder(encoding)
+        tree = ElementTree.parse(data, parser)
+        for elem in tree.getiterator():
+            if elem.tag.startswith('{'):
+                elem.tag = elem.tag[elem.tag.find('}')+1:]
+        return tree
+
+    def tostring(self, element):
+        e = ElementTree.Element('body')
+        e.text = element.text
+        e.tail = element.tail
+        for sub in element.getchildren():
+            e.append(sub)
+        s = ''
+        # XXX OK if it doesn't work with utf-8, the result will be fucking ugly.
+        for encoding in ('utf-8', 'ISO-8859-1'):
+            try:
+                s = ElementTree.tostring(e, encoding)
+            except UnicodeError:
+                continue
+            else:
+                break
+        return unicode(s)