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genhtml_final.py
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executable file
·195 lines (152 loc) · 5.17 KB
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"""
genhtmlg.py Python class example.
This module does some more consolidating...
"""
class Element(object):
"""
An element with optional attributes and multiple items in the content
"""
tag = ""
indent = " "
def __init__(self, content=None, **attributes):
"""
initialize an element with optional attributes, and any number of sub-elements and content
:param content: content of the element: single string or another element.
an empty string will be ignored
:param [attributes]: optional attributes as keyword parameters.
example:
"""
if not content:
self.children = []
else:
self.children = [content]
self.attributes = attributes
def append(self, element):
self.children.append(element)
def render(self, file_out, ind = ""):
"""
an html rendering method for elements that have attributes and content
"""
file_out.write("\n")
file_out.write(ind)
file_out.write("<%s"%self.tag)
for key, value in self.attributes.items():
file_out.write(' %s="%s"'%(key, value) )
file_out.write(">")
for child in self.children:
try:
child.render(file_out, ind + self.indent)
except AttributeError:
file_out.write("\n")
file_out.write(ind + self.indent)
file_out.write(str(child))
file_out.write("\n")
file_out.write(ind)
file_out.write('</%s>'%self.tag)
class Html(Element):
tag = "html"
## override the render method to add the "<!DOCTYPE html>"
def render(self, file_out, ind = ""):
print "in Html render method"
file_out.write("<!DOCTYPE html>")
# call the superclass render:
Element.render(self, file_out, ind)
class Head(Element):
tag = "head"
class Body(Element):
tag = "body"
class P(Element):
tag = "p"
class SelfClosingTag(Element):
"""
Element with a single tag -- no content, only attributes
"""
def __init__(self, **attributes):
self.attributes = attributes
def render(self, file_out, ind = ""):
"""
an html rendering method for self-closing elements:
attributes, but no content a no closing tag
"""
file_out.write("\n")
file_out.write(ind)
file_out.write("<%s"%self.tag)
for key, value in self.attributes.items():
file_out.write(' %s="%s"'%(key, value) )
file_out.write(" />")
class Meta(SelfClosingTag):
tag = "meta"
class Hr(SelfClosingTag):
tag = "hr"
class OneLineTag(Element):
def render(self, file_out, ind = ""):
"""
an html rendering method for elements that have attributes and content
"""
file_out.write("\n")
file_out.write(ind)
file_out.write("<%s"%self.tag)
for key, value in self.attributes.items():
file_out.write(' %s="%s"'%(key, value) )
file_out.write(">")
for child in self.children:
try:
child.render(file_out)
except AttributeError:
file_out.write(str(child))
file_out.write('</%s>'%self.tag)
class Title(OneLineTag):
tag = "title"
class A(OneLineTag):
"""
element for a link ( <a> tag )
"""
tag = "a"
def __init__(self, link, content):
OneLineTag.__init__(self, content, href=link)
class Ul(Element):
"""
element for an unordered list
"""
tag = "ul"
class Li(Element):
"""
element for the item in a list
"""
tag = "li"
class H(OneLineTag):
"""
class for header tags, the level is specified in a parameter
"""
def __init__(self, level, content, **attributes):
OneLineTag.__init__(self, content, **attributes)
self.tag = "h%i"%level
if __name__ == "__main__":
import sys, cStringIO
page = Html()
head = Head()
head.append( Meta(charset="UTF-8") )
head.append(Title("PythonClass = Revision 1087:"))
page.append(head)
body = Body()
body.append( H(2, "PythonClass - Class 6 example") )
body.append(P("Here is a paragraph of text -- there could be more of them, but this is enough to show that we can do some text",
style="text-align: center; font-style: oblique;"))
body.append(Hr())
list = Ul(id="TheList", style="line-height:200%")
list.append( Li("The first item in a list") )
list.append( Li("This is the second item", style="color: red") )
item = Li()
item.append("And this is a ")
item.append( A("http://google.com", "link") )
item.append("to google")
list.append(item)
body.append(list)
page.append(body)
f = cStringIO.StringIO()
page.render(f)
f.reset()
print f.read()
f.reset()
open("test_html.html", 'w').write(f.read())
print "new version"