mirror of
https://git.lyx.org/repos/lyx.git
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617 lines
21 KiB
Python
617 lines
21 KiB
Python
# This file is part of lyx2lyx
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# -*- coding: utf-8 -*-
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# Copyright (C) 2011 The LyX team
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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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'''
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This module offers several free functions to help with lyx2lyx'ing.
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More documentaton is below, but here is a quick guide to what
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they do. Optional arguments are marked by brackets.
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add_to_preamble(document, text):
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Here, text can be either a single line or a list of lines. It
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is bad practice to pass something with embedded newlines, but
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we will handle that properly.
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The routine checks to see whether the provided material is
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already in the preamble. If not, it adds it.
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Prepends a comment "% Added by lyx2lyx" to text.
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insert_to_preamble(document, text[, index]):
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Here, text can be either a single line or a list of lines. It
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is bad practice to pass something with embedded newlines, but
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we will handle that properly.
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The routine inserts text at document.preamble[index], where by
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default index is 0, so the material is inserted at the beginning.
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Prepends a comment "% Added by lyx2lyx" to text.
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put_cmd_in_ert(cmd):
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Here cmd should be a list of strings (lines), which we want to
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wrap in ERT. Returns a list of strings so wrapped.
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A call to this routine will often go something like this:
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i = find_token('\\begin_inset FunkyInset', ...)
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j = find_end_of_inset(document.body, i)
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content = lyx2latex(document[i:j + 1])
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ert = put_cmd_in_ert(content)
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document.body[i:j+1] = ert
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get_ert(lines, i[, verbatim]):
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Here, lines is a list of lines of LyX material containing an ERT inset,
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whose content we want to convert to LaTeX. The ERT starts at index i.
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If the optional (by default: False) bool verbatim is True, the content
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of the ERT is returned verbatim, that is in LyX syntax (not LaTeX syntax)
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for the use in verbatim insets.
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lyx2latex(document, lines):
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Here, lines is a list of lines of LyX material we want to convert
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to LaTeX. We do the best we can and return a string containing
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the translated material.
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lyx2verbatim(document, lines):
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Here, lines is a list of lines of LyX material we want to convert
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to verbatim material (used in ERT an the like). We do the best we
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can and return a string containing the translated material.
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latex_length(slen):
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Convert lengths (in LyX form) to their LaTeX representation. Returns
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(bool, length), where the bool tells us if it was a percentage, and
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the length is the LaTeX representation.
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convert_info_insets(document, type, func):
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Applies func to the argument of all info insets matching certain types
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type : the type to match. This can be a regular expression.
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func : function from string to string to apply to the "arg" field of
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the info insets.
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is_document_option(document, option):
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Find if _option_ is a document option (\\options in the header).
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insert_document_option(document, option):
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Insert _option_ as a document option.
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remove_document_option(document, option):
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Remove _option_ as a document option.
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'''
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import re
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from parser_tools import find_token, find_end_of_inset, get_containing_layout
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from unicode_symbols import unicode_reps
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# This will accept either a list of lines or a single line.
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# It is bad practice to pass something with embedded newlines,
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# though we will handle that.
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def add_to_preamble(document, text):
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" Add text to the preamble if it is not already there. "
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if not type(text) is list:
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# split on \n just in case
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# it'll give us the one element list we want
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# if there's no \n, too
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text = text.split('\n')
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i = 0
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prelen = len(document.preamble)
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while True:
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i = find_token(document.preamble, text[0], i)
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if i == -1:
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break
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# we need a perfect match
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matched = True
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for line in text:
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if i >= prelen or line != document.preamble[i]:
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matched = False
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break
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i += 1
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if matched:
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return
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document.preamble.extend(["% Added by lyx2lyx"])
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document.preamble.extend(text)
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# Note that text can be either a list of lines or a single line.
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# It should really be a list.
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def insert_to_preamble(document, text, index = 0):
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""" Insert text to the preamble at a given line"""
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if not type(text) is list:
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# split on \n just in case
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# it'll give us the one element list we want
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# if there's no \n, too
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text = text.split('\n')
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text.insert(0, "% Added by lyx2lyx")
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document.preamble[index:index] = text
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# A dictionary of Unicode->LICR mappings for use in a Unicode string's translate() method
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# Created from the reversed list to keep the first of alternative definitions.
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licr_table = dict((ord(ch), cmd) for cmd, ch in unicode_reps[::-1])
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def put_cmd_in_ert(cmd):
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"""
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Return ERT inset wrapping `cmd` as a list of strings.
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`cmd` can be a string or list of lines. Non-ASCII characters are converted
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to the respective LICR macros if defined in unicodesymbols.
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"""
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ret = ["\\begin_inset ERT", "status collapsed", "", "\\begin_layout Plain Layout", ""]
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# It will be faster to work with a single string internally.
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if isinstance(cmd, list):
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cmd = u"\n".join(cmd)
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else:
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cmd = u"%s" % cmd # ensure it is an unicode instance
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cmd = cmd.translate(licr_table)
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cmd = cmd.replace("\\", "\n\\backslash\n")
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ret += cmd.splitlines()
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ret += ["\\end_layout", "", "\\end_inset"]
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return ret
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def get_ert(lines, i, verbatim = False):
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'Convert an ERT inset into LaTeX.'
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if not lines[i].startswith("\\begin_inset ERT"):
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return ""
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j = find_end_of_inset(lines, i)
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if j == -1:
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return ""
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while i < j and not lines[i].startswith("status"):
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i = i + 1
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i = i + 1
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ret = ""
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first = True
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while i < j:
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if lines[i] == "\\begin_layout Plain Layout":
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if first:
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first = False
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else:
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ret = ret + "\n"
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while i + 1 < j and lines[i+1] == "":
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i = i + 1
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elif lines[i] == "\\end_layout":
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while i + 1 < j and lines[i+1] == "":
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i = i + 1
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elif lines[i] == "\\backslash":
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if verbatim:
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ret = ret + "\n" + lines[i] + "\n"
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else:
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ret = ret + "\\"
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else:
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ret = ret + lines[i]
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i = i + 1
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return ret
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def lyx2latex(document, lines):
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'Convert some LyX stuff into corresponding LaTeX stuff, as best we can.'
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content = ""
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ert_end = 0
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note_end = 0
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hspace = ""
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for curline in range(len(lines)):
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line = lines[curline]
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if line.startswith("\\begin_inset Note Note"):
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# We want to skip LyX notes, so remember where the inset ends
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note_end = find_end_of_inset(lines, curline + 1)
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continue
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elif note_end >= curline:
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# Skip LyX notes
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continue
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elif line.startswith("\\begin_inset ERT"):
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# We don't want to replace things inside ERT, so figure out
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# where the end of the inset is.
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ert_end = find_end_of_inset(lines, curline + 1)
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continue
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elif line.startswith("\\begin_inset Formula"):
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line = line[20:]
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elif line.startswith("\\begin_inset Quotes"):
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# For now, we do a very basic reversion. Someone who understands
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# quotes is welcome to fix it up.
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qtype = line[20:].strip()
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# lang = qtype[0]
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side = qtype[1]
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dbls = qtype[2]
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if side == "l":
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if dbls == "d":
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line = "``"
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else:
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line = "`"
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else:
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if dbls == "d":
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line = "''"
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else:
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line = "'"
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elif line.startswith("\\begin_inset Newline newline"):
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line = "\\\\ "
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elif line.startswith("\\noindent"):
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line = "\\noindent " # we need the space behind the command
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elif line.startswith("\\begin_inset space"):
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line = line[18:].strip()
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if line.startswith("\\hspace"):
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# Account for both \hspace and \hspace*
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hspace = line[:-2]
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continue
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elif line == "\\space{}":
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line = "\\ "
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elif line == "\\thinspace{}":
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line = "\\,"
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elif hspace != "":
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# The LyX length is in line[8:], after the \length keyword
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length = latex_length(line[8:])[1]
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line = hspace + "{" + length + "}"
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hspace = ""
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elif line.isspace() or \
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line.startswith("\\begin_layout") or \
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line.startswith("\\end_layout") or \
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line.startswith("\\begin_inset") or \
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line.startswith("\\end_inset") or \
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line.startswith("\\lang") or \
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line.strip() == "status collapsed" or \
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line.strip() == "status open":
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#skip all that stuff
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continue
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# this needs to be added to the preamble because of cases like
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# \textmu, \textbackslash, etc.
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add_to_preamble(document, ['% added by lyx2lyx for converted index entries',
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'\\@ifundefined{textmu}',
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' {\\usepackage{textcomp}}{}'])
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# a lossless reversion is not possible
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# try at least to handle some common insets and settings
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if ert_end >= curline:
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line = line.replace(r'\backslash', '\\')
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else:
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# No need to add "{}" after single-nonletter macros
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line = line.replace('&', '\\&')
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line = line.replace('#', '\\#')
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line = line.replace('^', '\\textasciicircum{}')
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line = line.replace('%', '\\%')
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line = line.replace('_', '\\_')
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line = line.replace('$', '\\$')
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# Do the LyX text --> LaTeX conversion
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for rep in unicode_reps:
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line = line.replace(rep[1], rep[0])
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line = line.replace(r'\backslash', r'\textbackslash{}')
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line = line.replace(r'\series bold', r'\bfseries{}').replace(r'\series default', r'\mdseries{}')
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line = line.replace(r'\shape italic', r'\itshape{}').replace(r'\shape smallcaps', r'\scshape{}')
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line = line.replace(r'\shape slanted', r'\slshape{}').replace(r'\shape default', r'\upshape{}')
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line = line.replace(r'\emph on', r'\em{}').replace(r'\emph default', r'\em{}')
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line = line.replace(r'\noun on', r'\scshape{}').replace(r'\noun default', r'\upshape{}')
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line = line.replace(r'\bar under', r'\underbar{').replace(r'\bar default', r'}')
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line = line.replace(r'\family sans', r'\sffamily{}').replace(r'\family default', r'\normalfont{}')
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line = line.replace(r'\family typewriter', r'\ttfamily{}').replace(r'\family roman', r'\rmfamily{}')
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line = line.replace(r'\InsetSpace ', r'').replace(r'\SpecialChar ', r'')
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content += line
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return content
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def lyx2verbatim(document, lines):
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'Convert some LyX stuff into corresponding verbatim stuff, as best we can.'
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content = lyx2latex(document, lines)
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content = re.sub(r'\\(?!backslash)', r'\n\\backslash\n', content)
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return content
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def latex_length(slen):
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'''
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Convert lengths to their LaTeX representation. Returns (bool, length),
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where the bool tells us if it was a percentage, and the length is the
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LaTeX representation.
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'''
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i = 0
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percent = False
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# the slen has the form
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# ValueUnit+ValueUnit-ValueUnit or
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# ValueUnit+-ValueUnit
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# the + and - (glue lengths) are optional
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# the + always precedes the -
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# Convert relative lengths to LaTeX units
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units = {"col%": "\\columnwidth",
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"text%": "\\textwidth",
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"page%": "\\paperwidth",
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"line%": "\\linewidth",
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"theight%": "\\textheight",
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"pheight%": "\\paperheight",
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"baselineskip%": "\\baselineskip"
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}
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for unit in list(units.keys()):
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i = slen.find(unit)
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if i == -1:
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continue
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percent = True
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minus = slen.rfind("-", 1, i)
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plus = slen.rfind("+", 0, i)
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latex_unit = units[unit]
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if plus == -1 and minus == -1:
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value = slen[:i]
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value = str(float(value)/100)
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end = slen[i + len(unit):]
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slen = value + latex_unit + end
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if plus > minus:
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value = slen[plus + 1:i]
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value = str(float(value)/100)
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begin = slen[:plus + 1]
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end = slen[i+len(unit):]
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slen = begin + value + latex_unit + end
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if plus < minus:
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value = slen[minus + 1:i]
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value = str(float(value)/100)
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begin = slen[:minus + 1]
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slen = begin + value + latex_unit
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# replace + and -, but only if the - is not the first character
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slen = slen[0] + slen[1:].replace("+", " plus ").replace("-", " minus ")
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# handle the case where "+-1mm" was used, because LaTeX only understands
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# "plus 1mm minus 1mm"
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if slen.find("plus minus"):
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lastvaluepos = slen.rfind(" ")
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lastvalue = slen[lastvaluepos:]
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slen = slen.replace(" ", lastvalue + " ")
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return (percent, slen)
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def length_in_bp(length):
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" Convert a length in LyX format to its value in bp units "
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em_width = 10.0 / 72.27 # assume 10pt font size
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text_width = 8.27 / 1.7 # assume A4 with default margins
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# scale factors are taken from Length::inInch()
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scales = {"bp" : 1.0,
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"cc" : (72.0 / (72.27 / (12.0 * 0.376 * 2.845))),
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"cm" : (72.0 / 2.54),
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"dd" : (72.0 / (72.27 / (0.376 * 2.845))),
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"em" : (72.0 * em_width),
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"ex" : (72.0 * em_width * 0.4305),
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"in" : 72.0,
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"mm" : (72.0 / 25.4),
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"mu" : (72.0 * em_width / 18.0),
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"pc" : (72.0 / (72.27 / 12.0)),
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"pt" : (72.0 / (72.27)),
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"sp" : (72.0 / (72.27 * 65536.0)),
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"text%" : (72.0 * text_width / 100.0),
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"col%" : (72.0 * text_width / 100.0), # assume 1 column
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"page%" : (72.0 * text_width * 1.7 / 100.0),
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"line%" : (72.0 * text_width / 100.0),
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"theight%" : (72.0 * text_width * 1.787 / 100.0),
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"pheight%" : (72.0 * text_width * 2.2 / 100.0)}
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rx = re.compile(r'^\s*([^a-zA-Z%]+)([a-zA-Z%]+)\s*$')
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m = rx.match(length)
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if not m:
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document.warning("Invalid length value: " + length + ".")
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return 0
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value = m.group(1)
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unit = m.group(2)
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if not unit in scales.keys():
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document.warning("Unknown length unit: " + unit + ".")
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return value
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return "%g" % (float(value) * scales[unit])
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def revert_flex_inset(lines, name, LaTeXname):
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" Convert flex insets to TeX code "
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i = 0
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while True:
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i = find_token(lines, '\\begin_inset Flex ' + name, i)
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if i == -1:
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return
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z = find_end_of_inset(lines, i)
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if z == -1:
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document.warning("Can't find end of Flex " + name + " inset.")
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i += 1
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continue
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# remove the \end_inset
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lines[z - 2:z + 1] = put_cmd_in_ert("}")
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# we need to reset character layouts if necessary
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j = find_token(lines, '\\emph on', i, z)
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k = find_token(lines, '\\noun on', i, z)
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l = find_token(lines, '\\series', i, z)
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m = find_token(lines, '\\family', i, z)
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n = find_token(lines, '\\shape', i, z)
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o = find_token(lines, '\\color', i, z)
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p = find_token(lines, '\\size', i, z)
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q = find_token(lines, '\\bar under', i, z)
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r = find_token(lines, '\\uuline on', i, z)
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s = find_token(lines, '\\uwave on', i, z)
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t = find_token(lines, '\\strikeout on', i, z)
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if j != -1:
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lines.insert(z - 2, "\\emph default")
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if k != -1:
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lines.insert(z - 2, "\\noun default")
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if l != -1:
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lines.insert(z - 2, "\\series default")
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if m != -1:
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lines.insert(z - 2, "\\family default")
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if n != -1:
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lines.insert(z - 2, "\\shape default")
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if o != -1:
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lines.insert(z - 2, "\\color inherit")
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if p != -1:
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lines.insert(z - 2, "\\size default")
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if q != -1:
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lines.insert(z - 2, "\\bar default")
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if r != -1:
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lines.insert(z - 2, "\\uuline default")
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if s != -1:
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lines.insert(z - 2, "\\uwave default")
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if t != -1:
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lines.insert(z - 2, "\\strikeout default")
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lines[i:i + 4] = put_cmd_in_ert(LaTeXname + "{")
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i += 1
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def revert_font_attrs(lines, name, LaTeXname):
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" Reverts font changes to TeX code "
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i = 0
|
|
changed = False
|
|
while True:
|
|
i = find_token(lines, name + ' on', i)
|
|
if i == -1:
|
|
break
|
|
j = find_token(lines, name + ' default', i)
|
|
k = find_token(lines, name + ' on', i + 1)
|
|
# if there is no default set, the style ends with the layout
|
|
# assure hereby that we found the correct layout end
|
|
if j != -1 and (j < k or k == -1):
|
|
lines[j:j + 1] = put_cmd_in_ert("}")
|
|
else:
|
|
j = find_token(lines, '\\end_layout', i)
|
|
lines[j:j] = put_cmd_in_ert("}")
|
|
lines[i:i + 1] = put_cmd_in_ert(LaTeXname + "{")
|
|
changed = True
|
|
i += 1
|
|
|
|
# now delete all remaining lines that manipulate this attribute
|
|
i = 0
|
|
while True:
|
|
i = find_token(lines, name, i)
|
|
if i == -1:
|
|
break
|
|
del lines[i]
|
|
|
|
return changed
|
|
|
|
|
|
def revert_layout_command(lines, name, LaTeXname):
|
|
" Reverts a command from a layout to TeX code "
|
|
i = 0
|
|
while True:
|
|
i = find_token(lines, '\\begin_layout ' + name, i)
|
|
if i == -1:
|
|
return
|
|
k = -1
|
|
# find the next layout
|
|
j = i + 1
|
|
while k == -1:
|
|
j = find_token(lines, '\\begin_layout', j)
|
|
l = len(lines)
|
|
# if nothing was found it was the last layout of the document
|
|
if j == -1:
|
|
lines[l - 4:l - 4] = put_cmd_in_ert("}")
|
|
k = 0
|
|
# exclude plain layout because this can be TeX code or another inset
|
|
elif lines[j] != '\\begin_layout Plain Layout':
|
|
lines[j - 2:j - 2] = put_cmd_in_ert("}")
|
|
k = 0
|
|
else:
|
|
j += 1
|
|
lines[i] = '\\begin_layout Standard'
|
|
lines[i + 1:i + 1] = put_cmd_in_ert(LaTeXname + "{")
|
|
i += 1
|
|
|
|
|
|
def hex2ratio(s):
|
|
" Converts an RRGGBB-type hexadecimal string to a float in [0.0,1.0] "
|
|
try:
|
|
val = int(s, 16)
|
|
except:
|
|
val = 0
|
|
if val != 0:
|
|
val += 1
|
|
return str(val / 256.0)
|
|
|
|
|
|
def str2bool(s):
|
|
"'true' goes to True, case-insensitively, and we strip whitespace."
|
|
s = s.strip().lower()
|
|
return s == "true"
|
|
|
|
|
|
def convert_info_insets(document, type, func):
|
|
"Convert info insets matching type using func."
|
|
i = 0
|
|
type_re = re.compile(r'^type\s+"(%s)"$' % type)
|
|
arg_re = re.compile(r'^arg\s+"(.*)"$')
|
|
while True:
|
|
i = find_token(document.body, "\\begin_inset Info", i)
|
|
if i == -1:
|
|
return
|
|
t = type_re.match(document.body[i + 1])
|
|
if t:
|
|
arg = arg_re.match(document.body[i + 2])
|
|
if arg:
|
|
new_arg = func(arg.group(1))
|
|
document.body[i + 2] = 'arg "%s"' % new_arg
|
|
i += 3
|
|
|
|
|
|
def insert_document_option(document, option):
|
|
"Insert _option_ as a document option."
|
|
|
|
# Find \options in the header
|
|
options_line = find_token(document.header, "\\options", 0)
|
|
|
|
# if the options does not exists add it after the textclass
|
|
if options_line == -1:
|
|
textclass_line = find_token(document.header, "\\textclass", 0)
|
|
document.header.insert(textclass_line +1,
|
|
r"\options %s" % option)
|
|
return
|
|
|
|
# add it to the end of the options
|
|
document.header[options_line] += " ,%s" % option
|
|
|
|
|
|
def remove_document_option(document, option):
|
|
""" Remove _option_ as a document option.
|
|
|
|
It is assumed that option belongs to the \options.
|
|
That can be done running is_document_option(document, option)."""
|
|
|
|
options_line = find_token(document.header, "\\options", 0)
|
|
option_pos = document.header[options_line].find(option)
|
|
|
|
# Remove option from \options
|
|
comma_before_pos = document.header[options_line].rfind(',', 0, option_pos)
|
|
comma_after_pos = document.header[options_line].find(',', option_pos)
|
|
|
|
# if there are no commas then it is the single option
|
|
# and the options line should be removed since it will be empty
|
|
if comma_before_pos == comma_after_pos == -1:
|
|
del document.header[options_line]
|
|
return
|
|
|
|
# last option
|
|
options = document.header[options_line]
|
|
if comma_after_pos == -1:
|
|
document.header[options_line] = options[:comma_before_pos].rsplit()
|
|
return
|
|
|
|
document.header[options_line] = options[comma_before_pos: comma_after_pos]
|
|
|
|
|
|
def is_document_option(document, option):
|
|
"Find if _option_ is a document option"
|
|
|
|
# Find \options in the header
|
|
options_line = find_token(document.header, "\\options", 0)
|
|
|
|
# \options is not present in the header
|
|
if options_line == -1:
|
|
return False
|
|
|
|
option_pos = document.header[options_line].find(option)
|
|
# option is not present in the \options
|
|
if option_pos == -1:
|
|
return False
|
|
|
|
return True
|