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#!/usr/bin/env python3
""" Utility for parsing HTML entity definitions available from:
http://www.w3.org/ as e.g.
http://www.w3.org/TR/REC-html40/HTMLlat1.ent
Input is read from stdin, output is written to stdout in form of a
Python snippet defining a dictionary "entitydefs" mapping literal
entity name to character or numeric entity.
Marc-Andre Lemburg, mal@lemburg.com, 1999.
Use as you like. NO WARRANTIES.
"""
import re,sys
entityRE = re.compile(r'<!ENTITY +(\w+) +CDATA +"([^"]+)" +-- +((?:.|\n)+?) *-->')
def parse(text,pos=0,endpos=None):
pos = 0
if endpos is None:
endpos = len(text)
d = {}
while 1:
m = entityRE.search(text,pos,endpos)
if not m:
break
name,charcode,comment = m.groups()
d[name] = charcode,comment
pos = m.end()
return d
def writefile(f,defs):
f.write("entitydefs = {\n")
items = sorted(defs.items())
for name, (charcode,comment) in items:
if charcode[:2] == '&#':
code = int(charcode[2:-1])
if code < 256:
charcode = r"'\%o'" % code
else:
charcode = repr(charcode)
else:
charcode = repr(charcode)
comment = ' '.join(comment.split())
f.write(" '%s':\t%s, \t# %s\n" % (name,charcode,comment))
f.write('\n}\n')
if __name__ == '__main__':
if len(sys.argv) > 1:
with open(sys.argv[1]) as infile:
text = infile.read()
else:
text = sys.stdin.read()
defs = parse(text)
if len(sys.argv) > 2:
with open(sys.argv[2],'w') as outfile:
writefile(outfile, defs)
else:
writefile(sys.stdout, defs)
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