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#! /usr/bin/env python
"""Convert ESIS events to SGML or XML markup.
This is limited, but seems sufficient for the ESIS generated by the
latex2esis.py script when run over the Python documentation.
"""
__version__ = '$Revision$'
import errno
import esistools
import os
import re
import string
from xml.utils import escape
EMPTIES_FILENAME = "../sgml/empties.dat"
LIST_EMPTIES = 0
def format_attrs(attrs, xml=0):
attrs = attrs.items()
attrs.sort()
s = ''
for name, value in attrs:
if xml:
s = '%s %s="%s"' % (s, name, escape(value))
else:
# this is a little bogus, but should do for now
if name == value and isnmtoken(value):
s = "%s %s" % (s, value)
elif istoken(value):
s = "%s %s=%s" % (s, name, value)
else:
s = '%s %s="%s"' % (s, name, escape(value))
return s
_nmtoken_rx = re.compile("[a-z][-._a-z0-9]*$", re.IGNORECASE)
def isnmtoken(s):
return _nmtoken_rx.match(s) is not None
_token_rx = re.compile("[a-z0-9][-._a-z0-9]*$", re.IGNORECASE)
def istoken(s):
return _token_rx.match(s) is not None
def do_convert(ifp, ofp, xml=0, autoclose=()):
if xml:
autoclose = ()
attrs = {}
lastopened = None
knownempties = []
knownempty = 0
lastempty = 0
while 1:
line = ifp.readline()
if not line:
break
type = line[0]
data = line[1:]
if data and data[-1] == "\n":
data = data[:-1]
if type == "-":
data = esistools.decode(data)
ofp.write(escape(data))
if "\n" in data:
lastopened = None
knownempty = 0
lastempty = 0
elif type == "(":
if data == "COMMENT":
ofp.write("<!--")
continue
if knownempty and xml:
ofp.write("<%s%s/>" % (data, format_attrs(attrs, xml)))
else:
ofp.write("<%s%s>" % (data, format_attrs(attrs, xml)))
if knownempty and data not in knownempties:
# accumulate knowledge!
knownempties.append(data)
attrs = {}
lastopened = data
lastempty = knownempty
knownempty = 0
elif type == ")":
if data == "COMMENT":
ofp.write("-->")
continue
if xml:
if not lastempty:
ofp.write("</%s>" % data)
elif data not in knownempties:
if data in autoclose:
pass
elif lastopened == data:
ofp.write("</>")
else:
ofp.write("</%s>" % data)
lastopened = None
lastempty = 0
elif type == "A":
name, type, value = string.split(data, " ", 2)
attrs[name] = esistools.decode(value)
elif type == "e":
knownempty = 1
if LIST_EMPTIES:
knownempties.append("")
if os.path.isfile(EMPTIES_FILENAME):
mode = "a"
else:
mode = "w"
fp = open(EMPTIES_FILENAME, mode)
fp.write(string.join(knownempties, "\n"))
fp.close()
def sgml_convert(ifp, ofp, autoclose):
return do_convert(ifp, ofp, xml=0, autoclose=autoclose)
def xml_convert(ifp, ofp, autoclose):
return do_convert(ifp, ofp, xml=1, autoclose=autoclose)
AUTOCLOSE = ("para", "term",)
def main():
import getopt
import sys
#
autoclose = AUTOCLOSE
convert = sgml_convert
xml = 0
xmldecl = 0
opts, args = getopt.getopt(sys.argv[1:], "adx",
["autoclose", "declare", "xml"])
for opt, arg in opts:
if opt in ("-d", "--declare"):
xmldecl = 1
elif opt in ("-x", "--xml"):
xml = 1
convert = xml_convert
elif opt in ("-a", "--autoclose"):
autoclose = string.split(arg, ",")
if len(args) == 0:
ifp = sys.stdin
ofp = sys.stdout
elif len(args) == 1:
ifp = open(args[0])
ofp = sys.stdout
elif len(args) == 2:
ifp = open(args[0])
ofp = open(args[1], "w")
else:
usage()
sys.exit(2)
# knownempties is ignored in the XML version
try:
if xml and xmldecl:
opf.write('<?xml version="1.0" encoding="iso8859-1"?>\n')
convert(ifp, ofp, autoclose)
except IOError, (err, msg):
if err != errno.EPIPE:
raise
if __name__ == "__main__":
main()
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