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167 lines
6.1 KiB
Python

#!/usr/bin/python
from __future__ import print_function
from html5lib import parse
import os, sys
from argparse import ArgumentParser
from xml.etree import ElementTree as ET
def etree_indent(elem, level=0):
i = "\n" + level*" "
if len(elem):
if not elem.text or not elem.text.strip():
elem.text = i + " "
if not elem.tail or not elem.tail.strip():
elem.tail = i
for elem in elem:
etree_indent(elem, level+1)
if not elem.tail or not elem.tail.strip():
elem.tail = i
else:
if level and (not elem.tail or not elem.tail.strip()):
elem.tail = i
def get_link_type (url):
lurl = url.lower()
if lurl.endswith(".html") or lurl.endswith(".htm"):
return "text/html"
elif lurl.endswith(".txt"):
return "text/plain"
elif lurl.endswith(".rss"):
return "application/rss+xml"
elif lurl.endswith(".atom"):
return "application/atom+xml"
elif lurl.endswith(".json"):
return "application/json"
elif lurl.endswith(".js") or lurl.endswith(".jsonp"):
return "text/javascript"
def pluralize (x):
if type(x) == list or type(x) == tuple:
return x
else:
return (x,)
def html5tidy (doc, charset="utf-8", title=None, scripts=None, links=None, indent=False):
if scripts:
script_srcs = [x.attrib.get("src") for x in doc.findall(".//script")]
for src in pluralize(scripts):
if src not in script_srcs:
script = ET.SubElement(doc.find(".//head"), "script", src=src)
script_srcs.append(src)
if links:
existinglinks = {}
for elt in doc.findall(".//link"):
href = elt.attrib.get("href")
if href:
existinglinks[href] = elt
for link in links:
linktype = link.get("type") or get_link_type(link["href"])
if link["href"] in existinglinks:
elt = existinglinks[link["href"]]
elt.attrib["rel"] = link["rel"]
else:
elt = ET.SubElement(doc.find(".//head"), "link", href=link["href"], rel=link["rel"])
if linktype:
elt.attrib["type"] = linktype
if "title" in link:
elt.attrib["title"] = link["title"]
if charset:
meta_charsets = [x.attrib.get("charset") for x in doc.findall(".//meta") if x.attrib.get("charset") != None]
if not meta_charsets:
meta = ET.SubElement(doc.find(".//head"), "meta", charset=args.charset)
if title != None:
titleelt = doc.find(".//title")
if not titleelt:
titleelt = ET.SubElement(doc.find(".//head"), "title")
titleelt.text = title
if indent:
etree_indent(doc)
return doc
if __name__ == "__main__":
p = ArgumentParser("")
p.add_argument("input", nargs="?", default=None)
p.add_argument("--indent", default=False, action="store_true")
p.add_argument("--mogrify", default=False, action="store_true", help="modify file in place")
p.add_argument("--method", default="html", help="method, default: html, values: html, xml, text")
p.add_argument("--output", default=None, help="")
p.add_argument("--title", default=None, help="ensure/add title tag in head")
p.add_argument("--charset", default="utf-8", help="ensure/add meta tag with charset")
p.add_argument("--script", action="append", default=[], help="ensure/add script tag")
# <link>s, see https://www.w3.org/TR/html5/links.html#links
p.add_argument("--stylesheet", action="append", default=[], help="ensure/add style link")
p.add_argument("--alternate", action="append", default=[], nargs="+", help="ensure/add alternate links (optionally followed by a title and type)")
p.add_argument("--next", action="append", default=[], nargs="+", help="ensure/add alternate link")
p.add_argument("--prev", action="append", default=[], nargs="+", help="ensure/add alternate link")
p.add_argument("--search", action="append", default=[], nargs="+", help="ensure/add search link")
p.add_argument("--rss", action="append", default=[], nargs="+", help="ensure/add alternate link of type application/rss+xml")
p.add_argument("--atom", action="append", default=[], nargs="+", help="ensure/add alternate link of type application/atom+xml")
args = p.parse_args()
links = []
def add_links (links, items, rel, _type=None):
for href in items:
d = {}
d["rel"] = rel
if _type:
d["type"] = _type
if type(href) == list:
if len(href) == 1:
d["href"] = href[0]
elif len(href) == 2:
d["href"] = href[0]
d["title"] = href[1]
elif len(href) == 3:
d["href"] = href[0]
d["title"] = href[1]
d["type"] = href[2]
else:
continue
else:
d["href"] = href
links.append(d)
for rel in ("stylesheet", "alternate", "next", "prev", "search"):
add_links(links, getattr(args, rel), rel)
for item in args.rss:
add_links(links, item, rel="alternate", _type="application/rss+xml")
for item in args.atom:
add_links(links, item, rel="alternate", _type="application/atom+xml")
# INPUT
if args.input:
fin = open(args.input)
else:
fin = sys.stdin
doc = parse(fin, namespaceHTMLElements=False)
if fin != sys.stdin:
fin.close()
html5tidy(doc, scripts=args.script, links=links, title=args.title, indent=args.indent)
# OUTPUT
tmppath = None
if args.output:
fout = open(args.output, "w")
elif args.mogrify:
tmppath = args.input+".tmp"
fout = open(tmppath, "w")
else:
fout = sys.stdout
print (ET.tostring(doc, method=args.method), file=fout)
if fout != sys.stdout:
fout.close()
if tmppath:
os.rename(args.input, args.input+"~")
os.rename(tmppath, args.input)