mirror of
https://github.com/python/cpython.git
synced 2025-10-31 05:31:20 +00:00
337 lines
12 KiB
Python
Executable file
337 lines
12 KiB
Python
Executable file
#! /usr/bin/env python
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"""Generate ESIS events based on a LaTeX source document and configuration
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data.
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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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import StringIO
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import sys
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class Error(Exception):
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pass
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class LaTeXFormatError(Error):
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pass
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_begin_env_rx = re.compile(r"[\\]begin{([^}]*)}")
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_end_env_rx = re.compile(r"[\\]end{([^}]*)}")
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_begin_macro_rx = re.compile("[\\\\]([a-zA-Z]+[*]?)({|\\s*\n?)")
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_comment_rx = re.compile("%+ ?(.*)\n")
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_text_rx = re.compile(r"[^]%\\{}]+")
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_optional_rx = re.compile(r"\s*[[]([^]]*)[]]")
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_parameter_rx = re.compile("[ \n]*{([^}]*)}")
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_token_rx = re.compile(r"[a-zA-Z][a-zA-Z0-9.-]*$")
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_start_group_rx = re.compile("[ \n]*{")
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_start_optional_rx = re.compile("[ \n]*[[]")
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_charmap = {}
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for c in map(chr, range(256)):
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_charmap[c] = c
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_charmap["\n"] = r"\n"
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_charmap["\\"] = r"\\"
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del c
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def encode(s):
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return string.join(map(_charmap.get, s), '')
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ESCAPED_CHARS = "$%#^ {}&"
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def subconvert(line, ofp, table, discards, autoclosing, knownempty,
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endchar=None):
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stack = []
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while line:
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if line[0] == endchar and not stack:
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return line[1:]
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m = _comment_rx.match(line)
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if m:
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text = m.group(1)
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if text:
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ofp.write("(COMMENT\n")
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ofp.write("- %s \n" % encode(text))
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ofp.write(")COMMENT\n")
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ofp.write("-\\n\n")
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else:
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ofp.write("-\\n\n")
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line = line[m.end():]
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continue
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m = _begin_env_rx.match(line)
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if m:
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# re-write to use the macro handler
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line = r"\%s %s" % (m.group(1), line[m.end():])
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continue
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m =_end_env_rx.match(line)
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if m:
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# end of environment
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envname = m.group(1)
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if envname == "document":
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# special magic
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for n in stack[1:]:
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if n not in autoclosing:
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raise LaTeXFormatError("open element on stack: " + `n`)
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# should be more careful, but this is easier to code:
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stack = []
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ofp.write(")document\n")
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elif envname == stack[-1]:
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ofp.write(")%s\n" % envname)
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del stack[-1]
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else:
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raise LaTeXFormatError("environment close doesn't match")
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line = line[m.end():]
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continue
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m = _begin_macro_rx.match(line)
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if m:
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# start of macro
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macroname = m.group(1)
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if macroname == "verbatim":
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# really magic case!
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pos = string.find(line, "\\end{verbatim}")
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text = line[m.end(1):pos]
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ofp.write("(verbatim\n")
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ofp.write("-%s\n" % encode(text))
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ofp.write(")verbatim\n")
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line = line[pos + len("\\end{verbatim}"):]
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continue
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numbered = 1
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if macroname[-1] == "*":
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macroname = macroname[:-1]
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numbered = 0
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if macroname in autoclosing and macroname in stack:
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while stack[-1] != macroname:
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if stack[-1] and stack[-1] not in discards:
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ofp.write(")%s\n-\\n\n" % stack[-1])
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del stack[-1]
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if macroname not in discards:
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ofp.write("-\\n\n)%s\n-\\n\n" % macroname)
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del stack[-1]
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real_ofp = ofp
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if macroname in discards:
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ofp = StringIO.StringIO()
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#
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conversion = table.get(macroname, ([], 0, 0))
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params, optional, empty = conversion
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empty = empty or knownempty(macroname)
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if empty:
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ofp.write("e\n")
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if not numbered:
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ofp.write("Anumbered TOKEN no\n")
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# rip off the macroname
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if params:
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if optional and len(params) == 1:
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line = line = line[m.end():]
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else:
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line = line[m.end(1):]
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elif empty:
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line = line[m.end(1):]
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else:
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line = line[m.end():]
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#
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# Very ugly special case to deal with \item[]. The catch is that
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# this needs to occur outside the for loop that handles attribute
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# parsing so we can 'continue' the outer loop.
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#
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if optional and type(params[0]) is type(()):
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# the attribute name isn't used in this special case
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stack.append(macroname)
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ofp.write("(%s\n" % macroname)
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m = _start_optional_rx.match(line)
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if m:
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line = line[m.end():]
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line = subconvert(line, ofp, table, discards,
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autoclosing, knownempty, endchar="]")
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line = "}" + line
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continue
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# handle attribute mappings here:
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for attrname in params:
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if optional:
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optional = 0
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if type(attrname) is type(""):
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m = _optional_rx.match(line)
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if m:
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line = line[m.end():]
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ofp.write("A%s TOKEN %s\n"
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% (attrname, encode(m.group(1))))
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elif type(attrname) is type(()):
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# This is a sub-element; but don't place the
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# element we found on the stack (\section-like)
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stack.append(macroname)
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ofp.write("(%s\n" % macroname)
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macroname = attrname[0]
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m = _start_group_rx.match(line)
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if m:
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line = line[m.end():]
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elif type(attrname) is type([]):
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# A normal subelement.
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attrname = attrname[0]
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stack.append(macroname)
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stack.append(attrname)
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ofp.write("(%s\n" % macroname)
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macroname = attrname
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else:
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m = _parameter_rx.match(line)
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if not m:
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raise LaTeXFormatError(
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"could not extract parameter %s for %s: %s"
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% (attrname, macroname, `line[:100]`))
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value = m.group(1)
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if _token_rx.match(value):
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dtype = "TOKEN"
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else:
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dtype = "CDATA"
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ofp.write("A%s %s %s\n"
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% (attrname, dtype, encode(value)))
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line = line[m.end():]
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stack.append(macroname)
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ofp.write("(%s\n" % macroname)
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if empty:
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line = "}" + line
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ofp = real_ofp
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continue
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if line[0] == "}":
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# end of macro
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macroname = stack[-1]
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conversion = table.get(macroname)
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if macroname \
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and macroname not in discards \
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and type(conversion) is not type(""):
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# otherwise, it was just a bare group
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ofp.write(")%s\n" % stack[-1])
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del stack[-1]
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line = line[1:]
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continue
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if line[0] == "{":
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stack.append("")
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line = line[1:]
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continue
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if line[0] == "\\" and line[1] in ESCAPED_CHARS:
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ofp.write("-%s\n" % encode(line[1]))
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line = line[2:]
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continue
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if line[:2] == r"\\":
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ofp.write("(BREAK\n)BREAK\n")
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line = line[2:]
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continue
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m = _text_rx.match(line)
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if m:
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text = encode(m.group())
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ofp.write("-%s\n" % text)
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line = line[m.end():]
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continue
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# special case because of \item[]
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if line[0] == "]":
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ofp.write("-]\n")
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line = line[1:]
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continue
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# avoid infinite loops
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extra = ""
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if len(line) > 100:
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extra = "..."
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raise LaTeXFormatError("could not identify markup: %s%s"
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% (`line[:100]`, extra))
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def convert(ifp, ofp, table={}, discards=(), autoclosing=(), 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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try:
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subconvert(ifp.read(), ofp, table, discards, autoclosing, d.has_key)
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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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def main():
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if 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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convert(ifp, ofp, {
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# entries are name
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# -> ([list of attribute names], first_is_optional, empty)
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"cfuncdesc": (["type", "name", ("args",)], 0, 0),
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"chapter": ([("title",)], 0, 0),
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"chapter*": ([("title",)], 0, 0),
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"classdesc": (["name", ("constructor-args",)], 0, 0),
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"ctypedesc": (["name"], 0, 0),
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"cvardesc": (["type", "name"], 0, 0),
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"datadesc": (["name"], 0, 0),
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"declaremodule": (["id", "type", "name"], 1, 1),
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"deprecated": (["release"], 0, 1),
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"documentclass": (["classname"], 0, 1),
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"excdesc": (["name"], 0, 0),
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"funcdesc": (["name", ("args",)], 0, 0),
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"funcdescni": (["name", ("args",)], 0, 0),
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"indexii": (["ie1", "ie2"], 0, 1),
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"indexiii": (["ie1", "ie2", "ie3"], 0, 1),
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"indexiv": (["ie1", "ie2", "ie3", "ie4"], 0, 1),
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"input": (["source"], 0, 1),
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"item": ([("leader",)], 1, 0),
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"label": (["id"], 0, 1),
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"manpage": (["name", "section"], 0, 1),
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"memberdesc": (["class", "name"], 1, 0),
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"methoddesc": (["class", "name", ("args",)], 1, 0),
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"methoddescni": (["class", "name", ("args",)], 1, 0),
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"opcodedesc": (["name", "var"], 0, 0),
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"par": ([], 0, 1),
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"paragraph": ([("title",)], 0, 0),
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"rfc": (["number"], 0, 1),
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"section": ([("title",)], 0, 0),
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"seemodule": (["ref", "name"], 1, 0),
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"subparagraph": ([("title",)], 0, 0),
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"subsection": ([("title",)], 0, 0),
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"subsubsection": ([("title",)], 0, 0),
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"tableii": (["colspec", "style", "head1", "head2"], 0, 0),
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"tableiii": (["colspec", "style", "head1", "head2", "head3"], 0, 0),
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"tableiv": (["colspec", "style", "head1", "head2", "head3", "head4"],
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0, 0),
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"versionadded": (["version"], 0, 1),
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"versionchanged": (["version"], 0, 1),
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#
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"ABC": ([], 0, 1),
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"ASCII": ([], 0, 1),
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"C": ([], 0, 1),
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"Cpp": ([], 0, 1),
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"EOF": ([], 0, 1),
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"e": ([], 0, 1),
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"ldots": ([], 0, 1),
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"NULL": ([], 0, 1),
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"POSIX": ([], 0, 1),
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"UNIX": ([], 0, 1),
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#
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# Things that will actually be going away!
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#
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"fi": ([], 0, 1),
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"ifhtml": ([], 0, 1),
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"makeindex": ([], 0, 1),
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"makemodindex": ([], 0, 1),
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"maketitle": ([], 0, 1),
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"noindent": ([], 0, 1),
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"tableofcontents": ([], 0, 1),
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},
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discards=["fi", "ifhtml", "makeindex", "makemodindex", "maketitle",
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"noindent", "tableofcontents"],
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autoclosing=["chapter", "section", "subsection", "subsubsection",
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"paragraph", "subparagraph", ],
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knownempties=["appendix",
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"maketitle", "makeindex", "makemodindex",
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"localmoduletable"])
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if __name__ == "__main__":
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main()
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