266 lines
7.2 KiB
Python
Executable File
266 lines
7.2 KiB
Python
Executable File
#! /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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# This should have an explicit option to indicate whether the *INPUT* was
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# generated from an SGML or an XML application.
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__version__ = '$Revision$'
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import errno
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import esistools
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import os
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import re
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import string
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from xml.utils import escape
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AUTOCLOSE = ()
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EMPTIES_FILENAME = "../sgml/empties.dat"
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LIST_EMPTIES = 0
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_elem_map = {}
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_attr_map = {}
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_token_map = {}
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_normalize_case = str
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def map_gi(sgmlgi, map):
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uncased = _normalize_case(sgmlgi)
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try:
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return map[uncased]
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except IndexError:
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map[uncased] = sgmlgi
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return sgmlgi
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def null_map_gi(sgmlgi, map):
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return sgmlgi
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def format_attrs(attrs, xml=0):
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attrs = attrs.items()
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attrs.sort()
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parts = []
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append = parts.append
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for name, value in attrs:
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if xml:
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append('%s="%s"' % (name, escape(value)))
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else:
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# this is a little bogus, but should do for now
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if name == value and isnmtoken(value):
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append(value)
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elif istoken(value):
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if value == "no" + name:
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append(value)
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else:
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append("%s=%s" % (name, value))
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else:
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append('%s="%s"' % (name, escape(value)))
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if parts:
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parts.insert(0, '')
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return string.join(parts)
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_nmtoken_rx = re.compile("[a-z][-._a-z0-9]*$", re.IGNORECASE)
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def isnmtoken(s):
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return _nmtoken_rx.match(s) is not None
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_token_rx = re.compile("[a-z0-9][-._a-z0-9]*$", re.IGNORECASE)
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def istoken(s):
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return _token_rx.match(s) is not None
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def convert(ifp, ofp, xml=0, autoclose=(), verbatims=()):
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if xml:
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autoclose = ()
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attrs = {}
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lastopened = None
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knownempties = []
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knownempty = 0
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lastempty = 0
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inverbatim = 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 = esistools.decode(data)
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data = escape(data)
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if not inverbatim:
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data = string.replace(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 data == "COMMENT":
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ofp.write("<!--")
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continue
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data = map_gi(data, _elem_map)
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if knownempty and xml:
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ofp.write("<%s%s/>" % (data, format_attrs(attrs, xml)))
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else:
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ofp.write("<%s%s>" % (data, format_attrs(attrs, xml)))
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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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inverbatim = data in verbatims
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elif type == ")":
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if data == "COMMENT":
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ofp.write("-->")
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continue
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data = map_gi(data, _elem_map)
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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 data in autoclose:
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pass
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elif 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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inverbatim = 0
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elif type == "A":
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name, type, value = string.split(data, " ", 2)
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name = map_gi(name, _attr_map)
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attrs[name] = esistools.decode(value)
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elif type == "e":
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knownempty = 1
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elif type == "&":
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ofp.write("&%s;" % data)
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knownempty = 0
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else:
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raise RuntimeError, "unrecognized ESIS event type: '%s'" % type
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if LIST_EMPTIES:
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dump_empty_element_names(knownempties)
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def dump_empty_element_names(knownempties):
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d = {}
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for gi in knownempties:
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d[gi] = gi
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knownempties.append("")
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if os.path.isfile(EMPTIES_FILENAME):
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fp = open(EMPTIES_FILENAME)
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while 1:
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line = fp.readline()
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if not line:
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break
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gi = string.strip(line)
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if gi:
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d[gi] = gi
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fp = open(EMPTIES_FILENAME, "w")
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gilist = d.keys()
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gilist.sort()
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fp.write(string.join(gilist, "\n"))
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fp.write("\n")
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fp.close()
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def update_gi_map(map, names, fromsgml=1):
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for name in string.split(names, ","):
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if fromsgml:
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uncased = string.lower(name)
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else:
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uncased = name
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map[uncased] = name
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def main():
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import getopt
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import sys
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#
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autoclose = AUTOCLOSE
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xml = 1
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xmldecl = 0
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elem_names = ''
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attr_names = ''
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value_names = ''
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verbatims = ('verbatim', 'interactive-session')
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opts, args = getopt.getopt(sys.argv[1:], "adesx",
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["autoclose=", "declare", "sgml", "xml",
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"elements-map=", "attributes-map",
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"values-map="])
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for opt, arg in opts:
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if opt in ("-d", "--declare"):
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xmldecl = 1
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elif opt == "-e":
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global LIST_EMPTIES
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LIST_EMPTIES = 1
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elif opt in ("-s", "--sgml"):
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xml = 0
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elif opt in ("-x", "--xml"):
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xml = 1
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elif opt in ("-a", "--autoclose"):
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autoclose = string.split(arg, ",")
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elif opt == "--elements-map":
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elem_names = ("%s,%s" % (elem_names, arg))[1:]
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elif opt == "--attributes-map":
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attr_names = ("%s,%s" % (attr_names, arg))[1:]
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elif opt == "--values-map":
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value_names = ("%s,%s" % (value_names, arg))[1:]
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#
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# open input streams:
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#
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if len(args) == 0:
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ifp = sys.stdin
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ofp = sys.stdout
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elif len(args) == 1:
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ifp = open(args[0])
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ofp = sys.stdout
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elif len(args) == 2:
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ifp = open(args[0])
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ofp = open(args[1], "w")
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else:
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usage()
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sys.exit(2)
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#
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# setup the name maps:
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#
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if elem_names or attr_names or value_names:
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# assume the origin was SGML; ignore case of the names from the ESIS
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# stream but set up conversion tables to get the case right on output
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global _normalize_case
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_normalize_case = string.lower
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update_gi_map(_elem_map, string.split(elem_names, ","))
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update_gi_map(_attr_map, string.split(attr_names, ","))
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update_gi_map(_values_map, string.split(value_names, ","))
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else:
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global map_gi
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map_gi = null_map_gi
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#
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# run the conversion:
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#
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try:
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if xml and xmldecl:
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opf.write('<?xml version="1.0" encoding="iso8859-1"?>\n')
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convert(ifp, ofp, xml=xml, autoclose=autoclose, verbatims=verbatims)
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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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