mirror of
https://git.lyx.org/repos/lyx.git
synced 2024-11-09 18:31:04 +00:00
6628aec30c
I cannot see why one would want to do what it actually does. The way it is used in the code assumes it behaves as it now does, so far as I can see. In particular, if we find: option "some string" with the call: get_value(document.body, "option", i) then this will return '"some'. Someone please tell me if I am wrong. git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@36099 a592a061-630c-0410-9148-cb99ea01b6c8
262 lines
7.3 KiB
Python
262 lines
7.3 KiB
Python
# This file is part of lyx2lyx
|
|
# -*- coding: utf-8 -*-
|
|
# Copyright (C) 2002-2010 Dekel Tsur <dekel@lyx.org>,
|
|
# José Matos <jamatos@lyx.org>, Richard Heck <rgheck@comcast.net>
|
|
#
|
|
# This program is free software; you can redistribute it and/or
|
|
# modify it under the terms of the GNU General Public License
|
|
# as published by the Free Software Foundation; either version 2
|
|
# of the License, or (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy 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.
|
|
|
|
" This modules offer several free functions to help parse lines. "
|
|
|
|
# Utilities for one line
|
|
def check_token(line, token):
|
|
""" 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."""
|
|
|
|
if end == 0 or end > len(lines):
|
|
end = len(lines)
|
|
m = len(token)
|
|
for i in xrange(start, end):
|
|
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_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)
|
|
|
|
for i in xrange(start, end):
|
|
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)
|
|
for i in xrange(start, end):
|
|
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
|
|
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
|
|
return -1
|
|
|
|
|
|
def get_value(lines, token, start, end = 0, default = ""):
|
|
""" get_value(lines, token, start[[, end], default]) -> string
|
|
|
|
Find the next line that looks like:
|
|
token followed by other stuff
|
|
Returns "followed by other stuff".
|
|
"""
|
|
|
|
i = find_token_exact(lines, token, start, end)
|
|
if i == -1:
|
|
return default
|
|
l = lines[i].split(None, 1)
|
|
if len(l) > 1:
|
|
return l[1]
|
|
return default
|
|
|
|
|
|
def get_value_string(lines, token, start, end = 0, trim = False, default = ""):
|
|
""" get_value_string(lines, token, start[[, end], trim, default]) -> string
|
|
|
|
Return tokens after token as string, in lines, where
|
|
token is the first element. When trim is used, the first and last character
|
|
of the string is trimmed."""
|
|
|
|
i = find_token_exact(lines, token, start, end)
|
|
if i == -1:
|
|
return default
|
|
if len(lines[i].split()) > 1:
|
|
for k in range (0, len(lines[i])):
|
|
if lines[i][k] == ' ':
|
|
if trim == False:
|
|
return lines[i][k+1:len(lines[i])]
|
|
else:
|
|
return lines[i][k+2:len(lines[i])-1]
|
|
else:
|
|
return default
|
|
|
|
|
|
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 end
|
|
else:
|
|
del lines[k]
|
|
return end - 1
|
|
|
|
|
|
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 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
|
|
|
|
|
|
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 find_nonempty_line(lines, start, end = 0):
|
|
if end == 0:
|
|
end = len(lines)
|
|
for i in xrange(start, end):
|
|
if is_nonempty_line(lines[i]):
|
|
return i
|
|
return -1
|
|
|
|
|
|
def find_end_of_inset(lines, i):
|
|
" Find end of inset, where lines[i] is included."
|
|
return find_end_of(lines, i, "\\begin_inset", "\\end_inset")
|
|
|
|
|
|
def find_end_of_layout(lines, i):
|
|
" Find end of layout, where lines[i] is included."
|
|
return find_end_of(lines, i, "\\begin_layout", "\\end_layout")
|
|
|
|
|
|
# checks if line i is in the inset e.g., "\\begin_inset CommandInset ref"
|
|
# if so, returns starting and ending lines
|
|
# otherwise, returns (-1, -1)
|
|
def get_containing_inset(lines, i, inset):
|
|
defval = (-1, -1)
|
|
stins = find_token_backwards(lines, inset, i)
|
|
if stins == -1:
|
|
return defval
|
|
endins = find_end_of_inset(lines, stins)
|
|
# note that this includes the notfound case.
|
|
if endins < i:
|
|
return defval
|
|
return (stins, endins)
|