132 lines
3.2 KiB
Python
132 lines
3.2 KiB
Python
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#! /usr/bin/env python
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"""Convert ESIS events to SGML or XML markup.
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This is limited, but seems sufficient for the ESIS generated by the
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latex2esis.py script when run over the Python documentation.
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"""
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__version__ = '$Revision$'
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import errno
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import re
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import string
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_data_rx = re.compile(r"[^\\][^\\]*")
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def decode(s):
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r = ''
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while s:
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m = _data_rx.match(s)
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if m:
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r = r + m.group()
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s = s[len(m.group()):]
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elif s[1] == "\\":
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r = r + "\\"
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s = s[2:]
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elif s[1] == "n":
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r = r + "\n"
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s = s[2:]
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else:
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raise ValueError, "can't handle " + `s`
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return r
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def format_attrs(attrs):
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attrs = attrs.items()
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attrs.sort()
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s = ''
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for name, value in attrs:
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s = '%s %s="%s"' % (s, name, value)
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return s
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def do_convert(ifp, ofp, knownempties, xml=0):
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attrs = {}
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lastopened = None
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knownempty = 0
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lastempty = 0
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while 1:
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line = ifp.readline()
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if not line:
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break
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type = line[0]
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data = line[1:]
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if data and data[-1] == "\n":
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data = data[:-1]
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if type == "-":
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data = decode(data)
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ofp.write(data)
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if "\n" in data:
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lastopened = None
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knownempty = 0
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lastempty = 0
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elif type == "(":
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if knownempty and xml:
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ofp.write("<%s%s/>" % (data, format_attrs(attrs)))
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else:
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ofp.write("<%s%s>" % (data, format_attrs(attrs)))
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if knownempty and data not in knownempties:
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# accumulate knowledge!
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knownempties.append(data)
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attrs = {}
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lastopened = data
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lastempty = knownempty
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knownempty = 0
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elif type == ")":
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if xml:
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if not lastempty:
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ofp.write("</%s>" % data)
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elif data not in knownempties:
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if lastopened == data:
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ofp.write("</>")
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else:
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ofp.write("</%s>" % data)
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lastopened = None
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lastempty = 0
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elif type == "A":
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name, type, value = string.split(data, " ", 2)
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attrs[name] = decode(value)
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elif type == "e":
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knownempty = 1
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def sgml_convert(ifp, ofp, knownempties=()):
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return do_convert(ifp, ofp, list(knownempties), xml=0)
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def xml_convert(ifp, ofp, knownempties=()):
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return do_convert(ifp, ofp, list(knownempties), xml=1)
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def main():
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import sys
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#
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convert = sgml_convert
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if sys.argv[1:] and sys.argv[1] in ("-x", "--xml"):
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convert = xml_convert
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del sys.argv[1]
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if len(sys.argv) == 1:
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ifp = sys.stdin
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ofp = sys.stdout
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elif len(sys.argv) == 2:
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ifp = open(sys.argv[1])
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ofp = sys.stdout
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elif len(sys.argv) == 3:
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ifp = open(sys.argv[1])
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ofp = open(sys.argv[2], "w")
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else:
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usage()
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sys.exit(2)
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# knownempties is ignored in the XML version
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try:
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convert(ifp, ofp)
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except IOError, (err, msg):
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if err != errno.EPIPE:
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raise
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if __name__ == "__main__":
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main()
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