mirror of
https://git.lyx.org/repos/lyx.git
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c9974774af
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/branches/BRANCH_1_4_X@13618 a592a061-630c-0410-9148-cb99ea01b6c8
559 lines
18 KiB
Python
559 lines
18 KiB
Python
# This file is part of lyx2lyx
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# -*- coding: iso-8859-1 -*-
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# Copyright (C) 2002-2004 Dekel Tsur <dekel@lyx.org>, José Matos <jamatos@lyx.org>
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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from parser_tools import get_value, check_token, find_token,\
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find_tokens, find_end_of, find_end_of_inset
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import os.path
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import gzip
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import sys
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import re
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import string
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import time
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version_lyx2lyx = "1.4.1"
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default_debug_level = 2
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# Regular expressions used
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format_re = re.compile(r"(\d)[\.,]?(\d\d)")
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fileformat = re.compile(r"\\lyxformat\s*(\S*)")
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original_version = re.compile(r"\#LyX (\S*)")
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##
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# file format information:
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# file, supported formats, stable release versions
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format_relation = [("0_10", [210], ["0.10.7","0.10"]),
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("0_12", [215], ["0.12","0.12.1","0.12"]),
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("1_0_0", [215], ["1.0.0","1.0"]),
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("1_0_1", [215], ["1.0.1","1.0.2","1.0.3","1.0.4", "1.1.2","1.1"]),
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("1_1_4", [215], ["1.1.4","1.1"]),
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("1_1_5", [216], ["1.1.5","1.1.5fix1","1.1.5fix2","1.1"]),
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("1_1_6", [217], ["1.1.6","1.1.6fix1","1.1.6fix2","1.1"]),
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("1_1_6fix3", [218], ["1.1.6fix3","1.1.6fix4","1.1"]),
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("1_2", [220], ["1.2.0","1.2.1","1.2.3","1.2.4","1.2"]),
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("1_3", [221], ["1.3.0","1.3.1","1.3.2","1.3.3","1.3.4","1.3.5","1.3.6","1.3"]),
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("1_4", range(222,246), ["1.4.0cvs","1.4"])]
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def formats_list():
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" Returns a list with supported file formats."
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formats = []
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for version in format_relation:
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for format in version[1]:
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if format not in formats:
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formats.append(format)
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return formats
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def get_end_format():
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" Returns the more recent file format available."
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return format_relation[-1][1][-1]
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def get_backend(textclass):
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" For _textclass_ returns its backend."
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if textclass == "linuxdoc" or textclass == "manpage":
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return "linuxdoc"
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if textclass[:7] == "docbook":
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return "docbook"
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return "latex"
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def trim_eol(line):
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" Remove end of line char(s)."
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if line[-2:-1] == '\r':
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return line[:-2]
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else:
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return line[:-1]
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##
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# Class
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#
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class LyX_Base:
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"""This class carries all the information of the LyX file."""
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def __init__(self, end_format = 0, input = "", output = "", error = "", debug = default_debug_level, try_hard = 0):
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"""Arguments:
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end_format: final format that the file should be converted. (integer)
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input: the name of the input source, if empty resort to standard input.
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output: the name of the output file, if empty use the standard output.
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error: the name of the error file, if empty use the standard error.
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debug: debug level, O means no debug, as its value increases be more verbose.
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"""
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self.choose_io(input, output)
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if error:
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self.err = open(error, "w")
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else:
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self.err = sys.stderr
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self.debug = debug
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self.try_hard = try_hard
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if end_format:
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self.end_format = self.lyxformat(end_format)
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else:
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self.end_format = get_end_format()
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self.backend = "latex"
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self.textclass = "article"
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# This is a hack: We use '' since we don't know the default
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# layout of the text class. LyX will parse it as default layout.
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# FIXME: Read the layout file and use the real default layout
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self.default_layout = ''
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self.header = []
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self.preamble = []
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self.body = []
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self.status = 0
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def warning(self, message, debug_level= default_debug_level):
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" Emits warning to self.error, if the debug_level is less than the self.debug."
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if debug_level <= self.debug:
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self.err.write("Warning: " + message + "\n")
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def error(self, message):
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" Emits a warning and exits if not in try_hard mode."
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self.warning(message)
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if not self.try_hard:
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self.warning("Quiting.")
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sys.exit(1)
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self.status = 2
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def read(self):
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"""Reads a file into the self.header and self.body parts, from self.input."""
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while 1:
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line = self.input.readline()
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if not line:
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self.error("Invalid LyX file.")
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line = trim_eol(line)
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if check_token(line, '\\begin_preamble'):
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while 1:
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line = self.input.readline()
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if not line:
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self.error("Invalid LyX file.")
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line = trim_eol(line)
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if check_token(line, '\\end_preamble'):
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break
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if string.split(line)[:0] in ("\\layout", "\\begin_layout", "\\begin_body"):
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self.warning("Malformed LyX file: Missing '\\end_preamble'.")
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self.warning("Adding it now and hoping for the best.")
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self.preamble.append(line)
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if check_token(line, '\\end_preamble'):
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continue
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line = string.strip(line)
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if not line:
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continue
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if string.split(line)[0] in ("\\layout", "\\begin_layout", "\\begin_body"):
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self.body.append(line)
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break
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self.header.append(line)
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while 1:
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line = self.input.readline()
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if not line:
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break
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self.body.append(trim_eol(line))
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self.textclass = get_value(self.header, "\\textclass", 0)
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self.backend = get_backend(self.textclass)
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self.format = self.read_format()
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self.language = get_value(self.header, "\\language", 0)
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if self.language == "":
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self.language = "english"
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self.initial_version = self.read_version()
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def write(self):
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" Writes the LyX file to self.output."
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self.set_version()
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self.set_format()
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if self.preamble:
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i = find_token(self.header, '\\textclass', 0) + 1
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preamble = ['\\begin_preamble'] + self.preamble + ['\\end_preamble']
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if i == 0:
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self.error("Malformed LyX file: Missing '\\textclass'.")
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else:
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header = self.header[:i] + preamble + self.header[i:]
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else:
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header = self.header
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for line in header + [''] + self.body:
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self.output.write(line+"\n")
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def choose_io(self, input, output):
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"""Choose input and output streams, dealing transparently with
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compressed files."""
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if output:
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self.output = open(output, "wb")
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else:
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self.output = sys.stdout
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if input and input != '-':
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self.dir = os.path.dirname(os.path.abspath(input))
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try:
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gzip.open(input).readline()
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self.input = gzip.open(input)
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self.output = gzip.GzipFile(mode="wb", fileobj=self.output)
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except:
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self.input = open(input)
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else:
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self.input = sys.stdin
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def lyxformat(self, format):
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" Returns the file format representation, an integer."
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result = format_re.match(format)
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if result:
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format = int(result.group(1) + result.group(2))
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else:
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self.error(str(format) + ": " + "Invalid LyX file.")
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if format in formats_list():
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return format
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self.error(str(format) + ": " + "Format not supported.")
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return None
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def read_version(self):
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""" Searchs for clues of the LyX version used to write the file, returns the
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most likely value, or None otherwise."""
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for line in self.header:
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if line[0] != "#":
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return None
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result = original_version.match(line)
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if result:
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return result.group(1)
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return None
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def set_version(self):
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" Set the header with the version used."
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self.header[0] = "#LyX %s created this file. For more info see http://www.lyx.org/" % version_lyx2lyx
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if self.header[1][0] == '#':
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del self.header[1]
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def read_format(self):
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" Read from the header the fileformat of the present LyX file."
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for line in self.header:
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result = fileformat.match(line)
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if result:
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return self.lyxformat(result.group(1))
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else:
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self.error("Invalid LyX File.")
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return None
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def set_format(self):
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" Set the file format of the file, in the header."
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if self.format <= 217:
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format = str(float(self.format)/100)
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else:
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format = str(self.format)
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i = find_token(self.header, "\\lyxformat", 0)
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self.header[i] = "\\lyxformat %s" % format
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def set_parameter(self, param, value):
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" Set the value of the header parameter."
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i = find_token(self.header, '\\' + param, 0)
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if i == -1:
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self.warning('Parameter not found in the header: %s' % param, 3)
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return
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self.header[i] = '\\%s %s' % (param, str(value))
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def is_default_layout(self, layout):
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" Check whether a layout is the default layout of this class."
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# FIXME: Check against the real text class default layout
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if layout == 'Standard' or layout == self.default_layout:
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return 1
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return 0
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def convert(self):
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"Convert from current (self.format) to self.end_format."
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mode, convertion_chain = self.chain()
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self.warning("convertion chain: " + str(convertion_chain), 3)
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for step in convertion_chain:
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steps = getattr(__import__("lyx_" + step), mode)
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self.warning("Convertion step: %s - %s" % (step, mode), default_debug_level + 1)
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if not steps:
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self.error("The convertion to an older format (%s) is not implemented." % self.format)
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multi_conv = len(steps) != 1
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for version, table in steps:
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if multi_conv and \
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(self.format >= version and mode == "convert") or\
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(self.format <= version and mode == "revert"):
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continue
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for conv in table:
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init_t = time.time()
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try:
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conv(self)
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except:
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self.warning("An error ocurred in %s, %s" % (version, str(conv)),
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default_debug_level)
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if not self.try_hard:
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raise
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self.status = 2
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else:
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self.warning("%lf: Elapsed time on %s" % (time.time() - init_t, str(conv)),
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default_debug_level + 1)
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self.format = version
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if self.end_format == self.format:
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return
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def chain(self):
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""" This is where all the decisions related with the convertion are taken.
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It returns a list of modules needed to convert the LyX file from
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self.format to self.end_format"""
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self.start = self.format
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format = self.format
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correct_version = 0
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for rel in format_relation:
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if self.initial_version in rel[2]:
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if format in rel[1]:
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initial_step = rel[0]
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correct_version = 1
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break
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if not correct_version:
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if format <= 215:
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self.warning("Version does not match file format, discarding it.")
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for rel in format_relation:
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if format in rel[1]:
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initial_step = rel[0]
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break
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else:
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# This should not happen, really.
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self.error("Format not supported.")
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# Find the final step
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for rel in format_relation:
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if self.end_format in rel[1]:
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final_step = rel[0]
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break
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else:
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self.error("Format not supported.")
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# Convertion mode, back or forth
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steps = []
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if (initial_step, self.start) < (final_step, self.end_format):
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mode = "convert"
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first_step = 1
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for step in format_relation:
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if initial_step <= step[0] <= final_step:
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if first_step and len(step[1]) == 1:
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first_step = 0
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continue
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steps.append(step[0])
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else:
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mode = "revert"
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relation_format = format_relation[:]
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relation_format.reverse()
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last_step = None
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for step in relation_format:
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if final_step <= step[0] <= initial_step:
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steps.append(step[0])
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last_step = step
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if last_step[1][-1] == self.end_format:
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steps.pop()
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return mode, steps
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def get_toc(self, depth = 4):
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" Returns the TOC of this LyX document."
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paragraphs_filter = {'Title' : 0,'Chapter' : 1, 'Section' : 2, 'Subsection' : 3, 'Subsubsection': 4}
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allowed_insets = ['Quotes']
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allowed_parameters = '\\paragraph_spacing', '\\noindent', '\\align', '\\labelwidthstring', "\\start_of_appendix", "\\leftindent"
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sections = []
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for section in paragraphs_filter.keys():
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sections.append('\\begin_layout %s' % section)
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toc_par = []
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i = 0
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while 1:
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i = find_tokens(self.body, sections, i)
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if i == -1:
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break
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j = find_end_of(self.body, i + 1, '\\begin_layout', '\\end_layout')
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if j == -1:
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self.warning('Incomplete file.', 0)
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break
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section = string.split(self.body[i])[1]
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if section[-1] == '*':
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section = section[:-1]
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par = []
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k = i + 1
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# skip paragraph parameters
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while not string.strip(self.body[k]) or string.split(self.body[k])[0] in allowed_parameters:
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k = k +1
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while k < j:
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if check_token(self.body[k], '\\begin_inset'):
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inset = string.split(self.body[k])[1]
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end = find_end_of_inset(self.body, k)
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if end == -1 or end > j:
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self.warning('Malformed file.', 0)
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if inset in allowed_insets:
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par.extend(self.body[k: end+1])
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k = end + 1
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else:
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par.append(self.body[k])
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k = k + 1
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# trim empty lines in the end.
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while string.strip(par[-1]) == '' and par:
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par.pop()
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toc_par.append(Paragraph(section, par))
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i = j + 1
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return toc_par
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class File(LyX_Base):
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" This class reads existing LyX files."
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def __init__(self, end_format = 0, input = "", output = "", error = "", debug = default_debug_level, try_hard = 0):
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LyX_Base.__init__(self, end_format, input, output, error, debug, try_hard)
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self.read()
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class NewFile(LyX_Base):
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" This class is to create new LyX files."
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def set_header(self, **params):
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# set default values
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self.header.extend([
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"#LyX xxxx created this file. For more info see http://www.lyx.org/",
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"\\lyxformat xxx",
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"\\begin_document",
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"\\begin_header",
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"\\textclass article",
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"\\language english",
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"\\inputencoding auto",
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"\\fontscheme default",
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"\\graphics default",
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"\\paperfontsize default",
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"\\papersize default",
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"\\use_geometry false",
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"\\use_amsmath 1",
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"\\cite_engine basic",
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"\\use_bibtopic false",
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"\\paperorientation portrait",
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"\\secnumdepth 3",
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"\\tocdepth 3",
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"\\paragraph_separation indent",
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"\\defskip medskip",
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"\\quotes_language english",
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"\\papercolumns 1",
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"\\papersides 1",
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"\\paperpagestyle default",
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"\\tracking_changes false",
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"\\end_header"])
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self.format = get_end_format()
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for param in params:
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self.set_parameter(param, params[param])
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def set_body(self, paragraphs):
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self.body.extend(['\\begin_body',''])
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for par in paragraphs:
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self.body.extend(par.asLines())
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self.body.extend(['','\\end_body', '\\end_document'])
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class Paragraph:
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# unfinished implementation, it is missing the Text and Insets representation.
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" This class represents the LyX paragraphs."
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def __init__(self, name, body=[], settings = [], child = []):
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""" Parameters:
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name: paragraph name.
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body: list of lines of body text.
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child: list of paragraphs that descend from this paragraph.
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"""
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self.name = name
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self.body = body
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self.settings = settings
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self.child = child
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def asLines(self):
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" Converts the paragraph to a list of strings, representing it in the LyX file."
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result = ['','\\begin_layout %s' % self.name]
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result.extend(self.settings)
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result.append('')
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result.extend(self.body)
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result.append('\\end_layout')
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if not self.child:
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return result
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result.append('\\begin_deeper')
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for node in self.child:
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result.extend(node.asLines())
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result.append('\\end_deeper')
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return result
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class Inset:
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" This class represents the LyX insets."
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pass
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class Text:
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" This class represents simple chuncks of text."
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pass
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