# This file is part of lyx2lyx
-# -*- coding: iso-8859-1 -*-
-# Copyright (C) 2002-2004 Dekel Tsur <dekel@lyx.org>, José Matos <jamatos@lyx.org>
+# -*- coding: utf-8 -*-
+# Copyright (C) 2002-2004 Dekel Tsur <dekel@lyx.org>, José Matos <jamatos@lyx.org>
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-import string
-import re
+" This modules offer several free functions to help parse lines."
+# Utilities for one line
def check_token(line, token):
- if line[:len(token)] == token:
- return 1
- return 0
+ """ check_token(line, token) -> bool
+
+ Return True if token is present in line and is the first element
+ else returns False."""
+
+ return line[:len(token)] == token
+
+
+def is_nonempty_line(line):
+ """ is_nonempty_line(line) -> bool
+
+ Return False if line is either empty or it has only whitespaces,
+ else return True."""
+ return line != " "*len(line)
+
+
+# Utilities for a list of lines
+def find_token(lines, token, start, end = 0, exact = False):
+ """ find_token(lines, token, start[[, end], exact]) -> int
+
+ Return the lowest line where token is found, and is the first
+ element, in lines[start, end].
+
+ Return -1 on failure."""
-# We need to check that the char after the token is space, but I think
-# we can ignore this
-def find_token(lines, token, start, end = 0):
if end == 0:
- end = len(lines)
+ end = len(lines)
m = len(token)
for i in xrange(start, end):
- if lines[i][:m] == token:
- return i
+ if exact:
+ x = lines[i].split()
+ y = token.split()
+ if len(x) < len(y):
+ continue
+ if x[:len(y)] == y:
+ return i
+ else:
+ if lines[i][:m] == token:
+ return i
return -1
-def find_token2(lines, token, start, end = 0):
- if end == 0:
- end = len(lines)
- for i in xrange(start, end):
- x = string.split(lines[i])
- if len(x) > 0 and x[0] == token:
- return i
- return -1
-def find_tokens(lines, tokens, start, end = 0):
+def find_token_exact(lines, token, start, end = 0):
+ return find_token(lines, token, start, end, True)
+
+
+def find_tokens(lines, tokens, start, end = 0, exact = False):
+ """ find_tokens(lines, tokens, start[[, end], exact]) -> int
+
+ Return the lowest line where one token in tokens is found, and is
+ the first element, in lines[start, end].
+
+ Return -1 on failure."""
if end == 0:
- end = len(lines)
+ end = len(lines)
+
for i in xrange(start, end):
- line = lines[i]
- for token in tokens:
- if line[:len(token)] == token:
- return i
+ for token in tokens:
+ if exact:
+ x = lines[i].split()
+ y = token.split()
+ if len(x) < len(y):
+ continue
+ if x[:len(y)] == y:
+ return i
+ else:
+ if lines[i][:len(token)] == token:
+ return i
return -1
+
+def find_tokens_exact(lines, tokens, start, end = 0):
+ return find_tokens(lines, tokens, start, end, True)
+
+
def find_re(lines, rexp, start, end = 0):
+ """ find_token_re(lines, rexp, start[, end]) -> int
+
+ Return the lowest line where rexp, a regular expression, is found
+ in lines[start, end].
+
+ Return -1 on failure."""
+
if end == 0:
- end = len(lines)
+ end = len(lines)
for i in xrange(start, end):
- if rexp.match(lines[i]):
- return i
+ if rexp.match(lines[i]):
+ return i
return -1
+
def find_token_backwards(lines, token, start):
+ """ find_token_backwards(lines, token, start) -> int
+
+ Return the highest line where token is found, and is the first
+ element, in lines[start, end].
+
+ Return -1 on failure."""
m = len(token)
for i in xrange(start, -1, -1):
- line = lines[i]
- if line[:m] == token:
- return i
+ line = lines[i]
+ if line[:m] == token:
+ return i
return -1
+
def find_tokens_backwards(lines, tokens, start):
+ """ find_tokens_backwards(lines, token, start) -> int
+
+ Return the highest line where token is found, and is the first
+ element, in lines[end, start].
+
+ Return -1 on failure."""
for i in xrange(start, -1, -1):
- line = lines[i]
- for token in tokens:
- if line[:len(token)] == token:
- return i
+ line = lines[i]
+ for token in tokens:
+ if line[:len(token)] == token:
+ return i
return -1
-def get_value(lines, token, start, end = 0):
- i = find_token2(lines, token, start, end)
+
+def get_value(lines, token, start, end = 0, default = ""):
+ """ get_value(lines, token, start[[, end], default]) -> list of strings
+
+ Return tokens after token for the first line, in lines, where
+ token is the first element."""
+
+ i = find_token_exact(lines, token, start, end)
if i == -1:
- return ""
- if len(string.split(lines[i])) > 1:
- return string.split(lines[i])[1]
- else:
return ""
+ if len(lines[i].split()) > 1:
+ return lines[i].split()[1]
+ else:
+ return default
+
-def del_token(lines, token, i, j):
- k = find_token2(lines, token, i, j)
+def del_token(lines, token, start, end):
+ """ del_token(lines, token, start, end) -> int
+
+ Find the lower line in lines where token is the first element and
+ delete that line.
+
+ Returns the number of lines remaining."""
+
+ k = find_token_exact(lines, token, start, end)
if k == -1:
- return j
+ return end
else:
- del lines[k]
- return j-1
-
-# Finds the paragraph that contains line i.
-def get_paragraph(lines, i):
- while i != -1:
- i = find_tokens_backwards(lines, ["\\end_inset", "\\layout"], i)
- if i == -1: return -1
- if check_token(lines[i], "\\layout"):
- return i
- i = find_beginning_of_inset(lines, i)
- return -1
+ del lines[k]
+ return end - 1
-# Finds the paragraph after the paragraph that contains line i.
-def get_next_paragraph(lines, i):
- while i != -1:
- i = find_tokens(lines, ["\\begin_inset", "\\layout", "\\end_float", "\\the_end"], i)
- if not check_token(lines[i], "\\begin_inset"):
- return i
- i = find_end_of_inset(lines, i)
- return -1
-def find_end_of(lines, i, start_token, end_token):
- count = 1
- n = len(lines)
- while i < n:
- i = find_tokens(lines, [end_token, start_token], i+1)
- if check_token(lines[i], start_token):
- count = count+1
- else:
- count = count-1
- if count == 0:
- return i
- return -1
-
-# Finds the matching \end_inset
def find_beginning_of(lines, i, start_token, end_token):
count = 1
while i > 0:
- i = find_tokens_backwards(lines, [start_token, end_token], i-1)
- if check_token(lines[i], end_token):
- count = count+1
- else:
- count = count-1
- if count == 0:
- return i
+ i = find_tokens_backwards(lines, [start_token, end_token], i-1)
+ if i == -1:
+ return -1
+ if check_token(lines[i], end_token):
+ count = count+1
+ else:
+ count = count-1
+ if count == 0:
+ return i
return -1
-# Finds the matching \end_inset
-def find_end_of_inset(lines, i):
- return find_end_of(lines, i, "\\begin_inset", "\\end_inset")
-
-# Finds the matching \end_inset
-def find_beginning_of_inset(lines, i):
- return find_beginning_of(lines, i, "\\begin_inset", "\\end_inset")
-
-def find_end_of_tabular(lines, i):
- return find_end_of(lines, i, "<lyxtabular", "</lyxtabular")
-def get_tabular_lines(lines, i):
- result = []
- i = i+1
- j = find_end_of_tabular(lines, i)
- if j == -1:
- return []
-
- while i <= j:
- if check_token(lines[i], "\\begin_inset"):
- i = find_end_of_inset(lines, i)+1
- else:
- result.append(i)
- i = i+1
- return result
+def find_end_of(lines, i, start_token, end_token):
+ count = 1
+ n = len(lines)
+ while i < n:
+ i = find_tokens(lines, [end_token, start_token], i+1)
+ if i == -1:
+ return -1
+ if check_token(lines[i], start_token):
+ count = count+1
+ else:
+ count = count-1
+ if count == 0:
+ return i
+ return -1
-def is_nonempty_line(line):
- return line != " "*len(line)
def find_nonempty_line(lines, start, end = 0):
if end == 0:
- end = len(lines)
+ end = len(lines)
for i in xrange(start, end):
- if is_nonempty_line(lines[i]):
- return i
+ if is_nonempty_line(lines[i]):
+ return i
return -1
-
-##
-# Tools for file reading
-#
-def read_file(header, body, opt):
- """Reads a file into the header and body parts"""
- preamble = 0
-
- while 1:
- line = opt.input.readline()
- if not line:
- opt.error("Invalid LyX file.")
-
- line = line[:-1]
- if check_token(line, '\\begin_preamble'):
- preamble = 1
- if check_token(line, '\\end_preamble'):
- preamble = 0
-
- if not preamble:
- line = string.strip(line)
-
- if not line and not preamble:
- break
-
- header.append(line)
-
- while 1:
- line = opt.input.readline()
- if not line:
- break
- body.append(line[:-1])
-
-def write_file(header, body, opt):
- for line in header:
- opt.output.write(line+"\n")
- opt.output.write("\n")
- for line in body:
- opt.output.write(line+"\n")
-
-##
-# lyx version
-#
-original_version = re.compile(r"\#LyX (\S*)")
-
-def read_version(header):
- for line in header:
- if line[0] != "#":
- return None
-
- result = original_version.match(line)
- if result:
- return result.group(1)
- return None
-
-def set_version(lines, version):
- lines[0] = "#LyX %s created this file. For more info see http://www.lyx.org/" % version
- if lines[1][0] == '#':
- del lines[1]
-
-##
-# file format version
-#
-format_re = re.compile(r"(\d)[\.,]?(\d\d)")
-fileformat = re.compile(r"\\lyxformat\s*(\S*)")
-lst_ft = [210, 215, 216, 217, 218, 220, 221, 223, 224, 225, 226, 227, 228, 229,
- 230, 231, 232]
-
-format_relation = [("0_10", [210], ["0.10.7","0.10"]),
- ("0_12", [215], ["0.12","0.12.1","0.12"]),
- ("1_0_0", [215], ["1.0.0","1.0"]),
- ("1_0_1", [215], ["1.0.1","1.0.2","1.0.3","1.0.4", "1.1.2","1.1"]),
- ("1_1_4", [215], ["1.1.4","1.1"]),
- ("1_1_5", [216], ["1.1.5","1.1.5fix1","1.1.5fix2","1.1"]),
- ("1_1_6", [217], ["1.1.6","1.1.6fix1","1.1.6fix2","1.1"]),
- ("1_1_6fix3", [218], ["1.1.6fix3","1.1.6fix4","1.1"]),
- ("1_2", [220], ["1.2.0","1.2.1","1.2.3","1.2.4","1.2"]),
- ("1_3", [221], ["1.3.0","1.3.1","1.3.2","1.3.3","1.3.4","1.3"]),
- ("1_4", [223,224,225,226,227,228,229,230,231,232], ["1.4.0cvs","1.4"])]
-
-def lyxformat(format, opt):
- result = format_re.match(format)
- if result:
- format = int(result.group(1) + result.group(2))
- else:
- opt.error(str(format) + ": " + "Invalid LyX file.")
-
- if format in lst_ft:
- return format
-
- opt.error(str(format) + ": " + "Format no supported.")
- return None
-
-def read_format(header, opt):
- for line in header:
- result = fileformat.match(line)
- if result:
- return lyxformat(result.group(1), opt)
- else:
- opt.error("Invalid LyX File.")
- return None
-
-def set_format(lines, number):
- if int(number) <= 217:
- number = float(number)/100
- i = find_token(lines, "\\lyxformat", 0)
- lines[i] = "\\lyxformat %s" % number
-
-def get_end_format():
- return format_relation[-1:][0][1][-1:][0]
-
-def chain(opt, initial_version):
- """ This is where all the decisions related with the convertion are taken"""
-
- format = opt.format
- if opt.start:
- if opt.start != format:
- opt.warning("%s: %s %s" % ("Proposed file format and input file formats do not match:", opt.start, format))
- else:
- opt.start = format
-
- if not opt.end:
- opt.end = get_end_format()
-
- correct_version = 0
-
- for rel in format_relation:
- if initial_version in rel[2]:
- if format in rel[1]:
- initial_step = rel[0]
- correct_version = 1
- break
-
- if not correct_version:
- if format <= 215:
- opt.warning("Version does not match file format, discarding it.")
- for rel in format_relation:
- if format in rel[1]:
- initial_step = rel[0]
- break
- else:
- # This should not happen, really.
- opt.error("Format not supported.")
-
- # Find the final step
- for rel in format_relation:
- if opt.end in rel[1]:
- final_step = rel[0]
- break
- else:
- opt.error("Format not supported.")
-
- # Convertion mode, back or forth
- steps = []
- if (initial_step, opt.start) < (final_step, opt.end):
- mode = "convert"
- first_step = 1
- for step in format_relation:
- if initial_step <= step[0] <= final_step:
- if first_step and len(step[1]) == 1:
- first_step = 0
- continue
- steps.append(step[0])
- else:
- mode = "revert"
- relation_format = format_relation
- relation_format.reverse()
- last_step = None
-
- for step in relation_format:
- if final_step <= step[0] <= initial_step:
- steps.append(step[0])
- last_step = step
-
- if last_step[1][-1] == opt.end:
- steps.pop()
-
- return mode, steps
projects / lyx.git / blobdiff