cpython/Doc/tools/sgmlconv/esis2sgml.py

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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
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import esistools
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import re
import string
def format_attrs(attrs):
attrs = attrs.items()
attrs.sort()
s = ''
for name, value in attrs:
s = '%s %s="%s"' % (s, name, value)
return s
def do_convert(ifp, ofp, knownempties, xml=0):
attrs = {}
lastopened = None
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 == "-":
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data = esistools.decode(data)
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ofp.write(data)
if "\n" in data:
lastopened = None
knownempty = 0
lastempty = 0
elif type == "(":
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if data == "COMMENT":
ofp.write("<!--")
continue
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if knownempty and xml:
ofp.write("<%s%s/>" % (data, format_attrs(attrs)))
else:
ofp.write("<%s%s>" % (data, format_attrs(attrs)))
if knownempty and data not in knownempties:
# accumulate knowledge!
knownempties.append(data)
attrs = {}
lastopened = data
lastempty = knownempty
knownempty = 0
elif type == ")":
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if data == "COMMENT":
ofp.write("-->")
continue
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if xml:
if not lastempty:
ofp.write("</%s>" % data)
elif data not in knownempties:
if lastopened == data:
ofp.write("</>")
else:
ofp.write("</%s>" % data)
lastopened = None
lastempty = 0
elif type == "A":
name, type, value = string.split(data, " ", 2)
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attrs[name] = esistools.decode(value)
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elif type == "e":
knownempty = 1
def sgml_convert(ifp, ofp, knownempties=()):
return do_convert(ifp, ofp, list(knownempties), xml=0)
def xml_convert(ifp, ofp, knownempties=()):
return do_convert(ifp, ofp, list(knownempties), xml=1)
def main():
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import getopt
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import sys
#
convert = sgml_convert
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xml = 0
xmldecl = 0
opts, args = getopt.getopt(sys.argv[1:], "dx", ["declare", "xml"])
for opt, arg in opts:
if opt in ("-d", "--declare"):
xmldecl = 1
elif opt in ("-x", "--xml"):
xml = 1
convert = xml_convert
if len(args) == 0:
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ifp = sys.stdin
ofp = sys.stdout
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elif len(args) == 1:
ifp = open(args[0])
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ofp = sys.stdout
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elif len(args) == 2:
ifp = open(args[0])
ofp = open(args[1], "w")
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else:
usage()
sys.exit(2)
# knownempties is ignored in the XML version
try:
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if xml and xmldecl:
opf.write('<?xml version="1.0" encoding="iso8859-1"?>\n')
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convert(ifp, ofp)
except IOError, (err, msg):
if err != errno.EPIPE:
raise
if __name__ == "__main__":
main()