lib/lyx2lyx/lyx2lyx

   1 #! /usr/bin/env python
   2 # Copyright (C) 2002 José Matos <jamatos@lyx.org>
   3 #
   4 # This program is free software; you can redistribute it and/or
   5 # modify it under the terms of the GNU General Public License
   6 # as published by the Free Software Foundation; either version 2
   7 # of the License, or (at your option) any later version.
   8 #
   9 # This program is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 # GNU General Public License for more details.
  13 #
  14 # You should have received a copy of the GNU General Public License
  15 # along with this program; if not, write to the Free Software
  16 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  17
  18 import getopt, sys, string, re
  19 from error import error, warning
  20 from parser_tools import set_comment, set_format, check_token
  21
  22 version = "0.0.2"
  23
  24 # Allow the dummy object to be able to carry related data
  25 # like a C struct
  26 class struct:
  27     pass
  28
  29 # options object, with default values
  30 opt = struct()
  31
  32 opt.output = sys.stdout
  33 opt.input = sys.stdin
  34 opt.start = None
  35 opt.end = None
  36 opt.quiet = 0
  37
  38 format = re.compile(r"(\d)[\.,]?(\d\d)")
  39 fileformat = re.compile(r"\\lyxformat\s*(\S*)")
  40 lst_ft = ["210", "215", "216", "217", "218", "220", "221"]
  41
  42 def usage():
  43     print """Usage: lyx2lyx [options] file1
  44 Convert old lyx file <file1> to newer format.
  45 Options:
  46     -h, --help                  this information
  47     -v, --version               output version information and exit
  48     -l, --list                  list all available formats
  49     -d, --debug level           level=0..2 (O_ no debug information,2_verbose)
  50                                 default: level=1
  51     -f, --from version          initial version (optional)
  52     -t, --to version            final version (optional)
  53     -o, --output name           name of the output file or else goes to stdout
  54     -q, --quiet                 same as --debug=0"""
  55
  56
  57 def parse_options(argv):
  58     _options =  ["help", "version", "list", "debug=", "from=", "to=", "output=", "quiet"]
  59     try:
  60        opts, args = getopt.getopt(argv[1:], "d:f:hlo:qt:v", _options)
  61     except getopt.error:
  62         usage()
  63         sys.exit(2)
  64
  65     for o, a in opts:
  66         if o in ("-h", "--help"):
  67             usage()
  68             sys.exit()
  69         if o in ("-v", "--version"):
  70             print "lyxconvert, version %s" %(version)
  71             print "Copyright (C) 2002 LyX Team"
  72             sys.exit()
  73         if o in ("-d", "--debug"):
  74             opt.debug = int(a)
  75         if o in ("-q", "--quiet"):
  76             opt.debug = 0
  77         if o in ("-l", "--list"):
  78             print lst_ft
  79             sys.exit()
  80         if o in ("-o", "--output"):
  81             opt.output = open(a, "w")
  82         if o in ("-f", "--from"):
  83             opt.start = lyxformat(a)
  84         if o in ("-t", "--to"):
  85             opt.end = lyxformat(a)
  86
  87     if not opt.end:
  88         opt.end = lst_ft[len(lst_ft)-1]
  89
  90     if opt.start and opt.start == opt.end:
  91         sys.stderr.write(error.same_format)
  92         sys.exit()
  93
  94     if opt.start > opt.end:
  95         sys.stderr.write(error.newer_format)
  96         sys.exit(1)
  97
  98     if args:
  99         opt.input = open(args[0])
 100
 101 def lyxformat(fmt):
 102     result = format.match(fmt)
 103     if result:
 104         fmt = result.group(1)+result.group(2)
 105     else:
 106         sys.stderr.write(fmt + ": " + error.invalid_format)
 107         sys.exit(2)
 108     if fmt not in lst_ft:
 109         sys.stderr.write(fmt + ": " + error.format_not_supported)
 110         sys.exit(1)
 111     return fmt
 112
 113 def read_file(file, header, body):
 114     """Reads a file into the header and body parts"""
 115     fmt = None
 116     preamble = 0
 117
 118     while 1:
 119         line = file.readline()
 120         if not line:
 121             sys.stderr.write(error.invalid_file)
 122             sys.exit(3)
 123
 124         line = line[:-1]
 125         if check_token(line, '\\begin_preamble'):
 126             preamble = 1
 127         if check_token(line, '\\end_preamble'):
 128             preamble = 0
 129
 130         if not preamble:
 131             line = string.strip(line)
 132
 133         if not line and not preamble:
 134             break
 135
 136         header.append(line)
 137         result = fileformat.match(line)
 138         if result:
 139             fmt = lyxformat(result.group(1))
 140
 141     while 1:
 142         line = file.readline()
 143         if not line:
 144             break
 145         body.append(line[:-1])
 146
 147     if not fmt:
 148         sys.stderr.write(error.invalid_file)
 149         sys.exit(3)
 150     return fmt
 151
 152 def write_file(file, header, body):
 153     for line in header:
 154         file.write(line+"\n")
 155     file.write("\n")
 156     for line in body:
 157         file.write(line+"\n")
 158
 159 def main(argv):
 160     parse_options(argv)
 161
 162     header, body = [], []
 163     fmt =  read_file(opt.input, header, body)
 164
 165     if opt.start:
 166         if opt.start != fmt:
 167             sys.stderr.write("%s: %s %s\n" % (warning.dont_match, opt.start, fmt))
 168     else:
 169         opt.start = fmt
 170
 171     # Convertion chain
 172     start = lst_ft.index(opt.start)
 173     end = lst_ft.index(opt.end)
 174
 175     for fmt in lst_ft[start:end]:
 176         __import__("lyxconvert_" + fmt).convert(header,body)
 177
 178     set_comment(header, opt.end)
 179     set_format(header, opt.end)
 180     write_file(opt.output, header, body)
 181
 182 if __name__ == "__main__":
 183     main(sys.argv)