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# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
# @file: pyh.py
# @purpose: a HTML tag generator
# @author: Emmanuel Turlay <turlay@cern.ch>
__doc__ = """The pyh.py module is the core of the PyH package. PyH lets you
generate HTML tags from within your python code.
See http://code.google.com/p/pyh/ for documentation.
"""
__author__ = "Emmanuel Turlay <turlay@cern.ch>"
__version__ = '$Revision: 63 $'
__date__ = '$Date: 2010-05-21 03:09:03 +0200 (Fri, 21 May 2010) $'
from sys import _getframe, stdout, modules, version
nOpen={}
nl = '\n'
doctype = '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">\n'
charset = '<meta http-equiv="Content-Type" content="text/html;charset=utf-8" />\n'
tags = ['html', 'body', 'head', 'link', 'meta', 'div', 'p', 'form', 'legend',
'input', 'select', 'span', 'b', 'i', 'option', 'img', 'script',
'table', 'tr', 'td', 'th', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6',
'fieldset', 'a', 'title', 'body', 'head', 'title', 'script', 'br', 'table',
'ul', 'li', 'ol', 'embed']
selfClose = ['input', 'img', 'link', 'br']
class Tag(list):
tagname = ''
def __init__(self, *arg, **kw):
self.attributes = kw
if self.tagname :
name = self.tagname
self.isSeq = False
else:
name = 'sequence'
self.isSeq = True
self.id = kw.get('id', name)
#self.extend(arg)
for a in arg: self.addObj(a)
def __iadd__(self, obj):
if isinstance(obj, Tag) and obj.isSeq:
for o in obj: self.addObj(o)
else: self.addObj(obj)
return self
def addObj(self, obj):
if not isinstance(obj, Tag): obj = str(obj)
id=self.setID(obj)
setattr(self, id, obj)
self.append(obj)
def setID(self, obj):
if isinstance(obj, Tag):
id = obj.id
n = len([t for t in self if isinstance(t, Tag) and t.id.startswith(id)])
else:
id = 'content'
n = len([t for t in self if not isinstance(t, Tag)])
if n: id = '%s_%03i' % (id, n)
if isinstance(obj, Tag): obj.id = id
return id
def __add__(self, obj):
if self.tagname: return Tag(self, obj)
self.addObj(obj)
return self
def __lshift__(self, obj):
self += obj
if isinstance(obj, Tag): return obj
def render(self):
result = ''
if self.tagname:
result = '<%s%s%s>' % (self.tagname, self.renderAtt(), self.selfClose()*' /')
if not self.selfClose():
for c in self:
if isinstance(c, Tag):
result += c.render()
else: result += c
if self.tagname:
result += '</%s>' % self.tagname
result += '\n'
return result
def renderAtt(self):
result = ''
for n, v in self.attributes.iteritems():
if n != 'txt' and n != 'open':
if n == 'cl': n = 'class'
result += ' %s="%s"' % (n, v)
return result
def selfClose(self):
return self.tagname in selfClose
def TagFactory(name):
class f(Tag):
tagname = name
f.__name__ = name
return f
thisModule = modules[__name__]
for t in tags: setattr(thisModule, t, TagFactory(t))
def ValidW3C():
out = a(img(src='http://www.w3.org/Icons/valid-xhtml10', alt='Valid XHTML 1.0 Strict'), href='http://validator.w3.org/check?uri=referer')
return out
class PyH(Tag):
tagname = 'html'
def __init__(self, name='MyPyHPage'):
self += head()
self += body()
self.attributes = dict(xmlns='http://www.w3.org/1999/xhtml', lang='en')
self.head += title(name)
def __iadd__(self, obj):
if isinstance(obj, head) or isinstance(obj, body): self.addObj(obj)
elif isinstance(obj, meta) or isinstance(obj, link): self.head += obj
else:
self.body += obj
id=self.setID(obj)
setattr(self, id, obj)
return self
def addJS(self, *arg):
for f in arg: self.head += script(type='text/javascript', src=f)
def addCSS(self, *arg):
for f in arg: self.head += link(rel='stylesheet', type='text/css', href=f)
def printOut(self,file=''):
if file: f = open(file, 'w')
else: f = stdout
f.write(doctype)
f.write(self.render())
f.flush()
if file: f.close()

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