# This file is part of lyx2lyx
# -*- coding: iso-8859-1 -*-
# Copyright (C) 2002-2004 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
# 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.

import re
import string
from parser_tools import find_token, find_token_backwards, find_re


layout_exp = re.compile(r"\\layout (\S*)")
math_env = ["\\[","\\begin{eqnarray*}","\\begin{eqnarray}","\\begin{equation}"]

def replace_protected_separator(file):
    lines = file.body
    i=0
    while 1:
        i = find_token(lines, "\\protected_separator", i)
        if i == -1:
            break
        j = find_token_backwards(lines, "\\layout", i)
        #if j == -1: print error
        layout_m = layout_exp.match(lines[j])
        if layout_m:
            layout = layout_m.group(1)
        else:
            layout = "Standard"

        if layout == "LyX-Code":
            result = ""
            while lines[i] == "\\protected_separator ":
                result = result + " "
                del lines[i]

            lines[i-1] = lines[i-1] + result + lines[i]
        else:
            lines[i-1] = lines[i-1]+ "\\SpecialChar ~"

        del lines[i]


def merge_formula_inset(file):
    lines = file.body
    i=0
    while 1:
        i = find_token(lines, "\\begin_inset Formula", i)
        if i == -1: break
        if lines[i+1] in math_env:
            lines[i] = lines[i] + lines[i+1]
            del lines[i+1]
        i = i + 1


# Update from tabular format 4 to 5 if necessary
def update_tabular(file):
    lines = file.body
    lyxtable_re = re.compile(r".*\\LyXTable$")
    i=0
    while 1:
        i = find_re(lines, lyxtable_re, i)
        if i == -1:
            break
        i = i + 1
        format = lines[i][8]
        if format != '4':
            continue

        lines[i]='multicol5'
        i = i + 1
        rows = int(string.split(lines[i])[0])
        columns = int(string.split(lines[i])[1])

        i = i + rows + 1
        for j in range(columns):
            col_info = string.split(lines[i])
            if len(col_info) == 3:
                lines[i] = lines[i] + '"" ""'
            else:
                lines[i] = string.join(col_info[:3]) + ' "%s" ""' % col_info[3]
            i = i + 1

        while lines[i]:
            lines[i] = lines[i] + ' "" ""'
            i = i + 1


def update_toc(file):
    lines = file.body
    i = 0
    while 1:
        i = find_token(lines, '\\begin_inset LatexCommand \\tableofcontents', i)
        if i == -1:
            break
        lines[i] = lines[i] + '{}'
        i = i + 1


def remove_cursor(file):
    lines = file.body
    i = find_token(lines, '\\cursor', 0)
    if i != -1:
        del lines[i]


def remove_vcid(file):
    lines = file.header
    i = find_token(lines, '\\lyxvcid', 0)
    if i != -1:
        del lines[i]
    i = find_token(lines, '\\lyxrcsid', 0)
    if i != -1:
        del lines[i]


def first_layout(file):
    lines = file.body
    while (lines[0] == ""):
        del lines[0]
    if lines[0][:7] != "\\layout":
        lines[:0] = ["\\layout Standard"]


def remove_space_in_units(file):
    lines = file.header
    margins = ["\\topmargin","\\rightmargin",
               "\\leftmargin","\\bottommargin"]

    unit_rexp = re.compile(r'[^ ]* (.*) (.*)')

    for margin in margins:
        i = 0
        while 1:
            i = find_token(lines, margin, i)
            if i == -1:
                break

            result = unit_rexp.search(lines[i])
            if result:
                lines[i] = margin + " " + result.group(1) + result.group(2)
            i = i + 1


def latexdel_getargs(file, i):
    lines = file.body

    # play safe, clean empty lines
    while 1:
        if lines[i]:
            break
        del lines[i]

    j = find_token(lines, '\\end_inset', i)

    if i == j:
        del lines[i]
    else:
        file.warning("Unexpected end of inset.")
    j = find_token(lines, '\\begin_inset LatexDel }{', i)

    ref = string.join(lines[i:j])
    del lines[i:j + 1]

    # play safe, clean empty lines
    while 1:
        if lines[i]:
            break
        del lines[i]

    j = find_token(lines, '\\end_inset', i - 1)
    if i == j:
        del lines[i]
    else:
        file.warning("Unexpected end of inset.")
    j = find_token(lines, '\\begin_inset LatexDel }', i)
    label = string.join(lines[i:j])
    del lines[i:j + 1]

    return ref, label


def update_ref(file):
    lines = file.body
    i = 0
    while 1:
        i = find_token(lines, '\\begin_inset LatexCommand', i)
        if i == -1:
            return

        if string.split(lines[i])[-1] == "\\ref{":
            i = i + 1
            ref, label = latexdel_getargs(file, i)
            lines[i - 1] = "%s[%s]{%s}" % (lines[i - 1][:-1], ref, label)

        i = i + 1


def update_latexdel(file):
    lines = file.body
    i = 0
    latexdel_re = re.compile(r".*\\begin_inset LatexDel")
    while 1:
        i = find_re(lines, latexdel_re, i)
        if i == -1:
            return
        lines[i] = string.replace(lines[i],'\\begin_inset LatexDel', '\\begin_inset LatexCommand')

        j = string.find(lines[i],'\\begin_inset')
        lines.insert(i+1, lines[i][j:])
        lines[i] = string.strip(lines[i][:j])
        i = i + 1

        if string.split(lines[i])[-1] in ("\\url{", "\\htmlurl{"):
            i = i + 1

            ref, label = latexdel_getargs(file, i)
            lines[i -1] = "%s[%s]{%s}" % (lines[i-1][:-1], label, ref)

        i = i + 1


convert = [[216, [first_layout, remove_vcid, remove_cursor, update_toc,
                  replace_protected_separator, merge_formula_inset,
                  update_tabular, remove_space_in_units, update_ref, update_latexdel]]]
revert  = []

if __name__ == "__main__":
    pass