diff options
Diffstat (limited to 'testing/mozbase/mozlog/mozlog/formatters/html/xmlgen.py')
| -rw-r--r-- | testing/mozbase/mozlog/mozlog/formatters/html/xmlgen.py | 283 |
1 files changed, 283 insertions, 0 deletions
diff --git a/testing/mozbase/mozlog/mozlog/formatters/html/xmlgen.py b/testing/mozbase/mozlog/mozlog/formatters/html/xmlgen.py new file mode 100644 index 000000000..e545e9a7d --- /dev/null +++ b/testing/mozbase/mozlog/mozlog/formatters/html/xmlgen.py @@ -0,0 +1,283 @@ +""" +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. + +This file is originally from: https://bitbucket.org/hpk42/py, specifically: +https://bitbucket.org/hpk42/py/src/980c8d526463958ee7cae678a7e4e9b054f36b94/py/_xmlgen.py?at=default +by holger krekel, holger at merlinux eu. 2009 +""" +import sys +import re + +if sys.version_info >= (3, 0): + def u(s): + return s + + def unicode(x): + if hasattr(x, '__unicode__'): + return x.__unicode__() + return str(x) +else: + def u(s): + return unicode(s) + unicode = unicode + + +class NamespaceMetaclass(type): + + def __getattr__(self, name): + if name[:1] == '_': + raise AttributeError(name) + if self == Namespace: + raise ValueError("Namespace class is abstract") + tagspec = self.__tagspec__ + if tagspec is not None and name not in tagspec: + raise AttributeError(name) + classattr = {} + if self.__stickyname__: + classattr['xmlname'] = name + cls = type(name, (self.__tagclass__,), classattr) + setattr(self, name, cls) + return cls + + +class Tag(list): + + class Attr(object): + + def __init__(self, **kwargs): + self.__dict__.update(kwargs) + + def __init__(self, *args, **kwargs): + super(Tag, self).__init__(args) + self.attr = self.Attr(**kwargs) + + def __unicode__(self): + return self.unicode(indent=0) + __str__ = __unicode__ + + def unicode(self, indent=2): + l = [] + SimpleUnicodeVisitor(l.append, indent).visit(self) + return u("").join(l) + + def __repr__(self): + name = self.__class__.__name__ + return "<%r tag object %d>" % (name, id(self)) + +Namespace = NamespaceMetaclass('Namespace', (object, ), { + '__tagspec__': None, + '__tagclass__': Tag, + '__stickyname__': False, +}) + + +class HtmlTag(Tag): + + def unicode(self, indent=2): + l = [] + HtmlVisitor(l.append, indent, shortempty=False).visit(self) + return u("").join(l) + +# exported plain html namespace + + +class html(Namespace): + __tagclass__ = HtmlTag + __stickyname__ = True + __tagspec__ = dict([(x, 1) for x in ( + 'a,abbr,acronym,address,applet,area,b,bdo,big,blink,' + 'blockquote,body,br,button,caption,center,cite,code,col,' + 'colgroup,comment,dd,del,dfn,dir,div,dl,dt,em,embed,' + 'fieldset,font,form,frameset,h1,h2,h3,h4,h5,h6,head,html,' + 'i,iframe,img,input,ins,kbd,label,legend,li,link,listing,' + 'map,marquee,menu,meta,multicol,nobr,noembed,noframes,' + 'noscript,object,ol,optgroup,option,p,pre,q,s,script,' + 'select,small,span,strike,strong,style,sub,sup,table,' + 'tbody,td,textarea,tfoot,th,thead,title,tr,tt,u,ul,xmp,' + 'base,basefont,frame,hr,isindex,param,samp,var' + ).split(',') if x]) + + class Style(object): + + def __init__(self, **kw): + for x, y in kw.items(): + x = x.replace('_', '-') + setattr(self, x, y) + + +class raw(object): + """just a box that can contain a unicode string that will be + included directly in the output""" + + def __init__(self, uniobj): + self.uniobj = uniobj + + +class SimpleUnicodeVisitor(object): + """ recursive visitor to write unicode. """ + + def __init__(self, write, indent=0, curindent=0, shortempty=True): + self.write = write + self.cache = {} + self.visited = {} # for detection of recursion + self.indent = indent + self.curindent = curindent + self.parents = [] + self.shortempty = shortempty # short empty tags or not + + def visit(self, node): + """ dispatcher on node's class/bases name. """ + cls = node.__class__ + try: + visitmethod = self.cache[cls] + except KeyError: + for subclass in cls.__mro__: + visitmethod = getattr(self, subclass.__name__, None) + if visitmethod is not None: + break + else: + visitmethod = self.__object + self.cache[cls] = visitmethod + visitmethod(node) + + # the default fallback handler is marked private + # to avoid clashes with the tag name object + def __object(self, obj): + # self.write(obj) + self.write(escape(unicode(obj))) + + def raw(self, obj): + self.write(obj.uniobj) + + def list(self, obj): + assert id(obj) not in self.visited + self.visited[id(obj)] = 1 + for elem in obj: + self.visit(elem) + + def Tag(self, tag): + assert id(tag) not in self.visited + try: + tag.parent = self.parents[-1] + except IndexError: + tag.parent = None + self.visited[id(tag)] = 1 + tagname = getattr(tag, 'xmlname', tag.__class__.__name__) + if self.curindent and not self._isinline(tagname): + self.write("\n" + u(' ') * self.curindent) + if tag: + self.curindent += self.indent + self.write(u('<%s%s>') % (tagname, self.attributes(tag))) + self.parents.append(tag) + for x in tag: + self.visit(x) + self.parents.pop() + self.write(u('</%s>') % tagname) + self.curindent -= self.indent + else: + nameattr = tagname + self.attributes(tag) + if self._issingleton(tagname): + self.write(u('<%s/>') % (nameattr,)) + else: + self.write(u('<%s></%s>') % (nameattr, tagname)) + + def attributes(self, tag): + # serialize attributes + attrlist = dir(tag.attr) + attrlist.sort() + l = [] + for name in attrlist: + res = self.repr_attribute(tag.attr, name) + if res is not None: + l.append(res) + l.extend(self.getstyle(tag)) + return u("").join(l) + + def repr_attribute(self, attrs, name): + if name[:2] != '__': + value = getattr(attrs, name) + if name.endswith('_'): + name = name[:-1] + if isinstance(value, raw): + insert = value.uniobj + else: + insert = escape(unicode(value)) + return ' %s="%s"' % (name, insert) + + def getstyle(self, tag): + """ return attribute list suitable for styling. """ + try: + styledict = tag.style.__dict__ + except AttributeError: + return [] + else: + stylelist = [x + ': ' + y for x, y in styledict.items()] + return [u(' style="%s"') % u('; ').join(stylelist)] + + def _issingleton(self, tagname): + """can (and will) be overridden in subclasses""" + return self.shortempty + + def _isinline(self, tagname): + """can (and will) be overridden in subclasses""" + return False + + +class HtmlVisitor(SimpleUnicodeVisitor): + + single = dict([(x, 1) for x in + ('br,img,area,param,col,hr,meta,link,base,' + 'input,frame').split(',')]) + inline = dict([(x, 1) for x in + ('a abbr acronym b basefont bdo big br cite code dfn em font ' + 'i img input kbd label q s samp select small span strike ' + 'strong sub sup textarea tt u var'.split(' '))]) + + def repr_attribute(self, attrs, name): + if name == 'class_': + value = getattr(attrs, name) + if value is None: + return + return super(HtmlVisitor, self).repr_attribute(attrs, name) + + def _issingleton(self, tagname): + return tagname in self.single + + def _isinline(self, tagname): + return tagname in self.inline + + +class _escape: + + def __init__(self): + self.escape = { + u('"'): u('"'), u('<'): u('<'), u('>'): u('>'), + u('&'): u('&'), u("'"): u('''), + } + self.charef_rex = re.compile(u("|").join(self.escape.keys())) + + def _replacer(self, match): + return self.escape[match.group(0)] + + def __call__(self, ustring): + """ xml-escape the given unicode string. """ + ustring = unicode(ustring) + return self.charef_rex.sub(self._replacer, ustring) + +escape = _escape() |