#!/usr/bin/env python3 # # Copyright 2010-2011 Le Coz Florent # # This file is part of Poezio. # # Poezio 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, version 3 of the License. # # Poezio 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 Poezio. If not, see . """ Various methods to convert shell colors to poezio colors, xhtml code to shell colors, poezio colors to xhtml code """ import re import subprocess import logging log = logging.getLogger(__name__) shell_colors_re = re.compile(r'(\[(?:\d+;)*(?:\d+m))') def get_body_from_message_stanza(message): """ Returns a string with xhtml markups converted to poezio colors if there's an xhtml_im element, or the body (without any color) otherwise """ xhtml_body = message['xhtml_im'] if xhtml_body: try: shell_body = xhtml_code_to_shell_colors(xhtml_body) except OSError: log.error('html parsing failed') else: return shell_colors_to_poezio_colors(shell_body) return message['body'] number_to_color_names = { 1: 'red', 2: 'green', } def poezio_colors_to_html(string): """ Convert poezio colors to html makups (e.g. \x191: ) """ # TODO underlined # a list of all opened elements, e.g. ['strong', 'span'] # So that we know what we need to close opened_elements = [] res = "

" next_attr_char = string.find('\x19') while next_attr_char != -1: attr_char = string[next_attr_char+1].lower() if next_attr_char != 0: res += string[:next_attr_char] string = string[next_attr_char+2:] if attr_char == 'o': for elem in opened_elements[::-1]: res += '' % (elem,) opened_elements = [] elif attr_char == 'b': if 'strong' not in opened_elements: opened_elements.append('strong') res += '' elif attr_char.isdigit(): number = int(attr_char) if number in number_to_color_names: if 'span' in opened_elements: res += '' res += "" % (number_to_color_names[number]) opened_elements.append('span') next_attr_char = string.find('\x19') res += string for elem in opened_elements[::-1]: res += '' % (elem,) res += "

" return res.replace('\n', '
') def shell_colors_to_poezio_colors(string): """ 'shell colors' means something like: Bonjour ^[[0;32msalut^[[0m The current understanding of this syntax is: n = 0: reset all attributes to defaults n >= 30 and n <= 37: set the foreground to n-30 """ def repl(matchobj): exp = matchobj.group(0)[2:-1] numbers = [int(nb) for nb in exp.split(';')] res = '' for num in numbers: if num == 0: res += r'\x19o' elif num >= 30 and num <= 37: res += r'\x19%s' % (num-30,) return res return shell_colors_re.sub(repl, string) def xhtml_code_to_shell_colors(string): """ Use a console browser to parse the xhtml and make it return a shell-colored string """ process = subprocess.Popen(["elinks", "-dump", "-dump-color-mode", "2"], stdout=subprocess.PIPE, stdin=subprocess.PIPE) result = process.communicate(input=string.encode('utf-8'))[0] return result.decode('utf-8').strip() if __name__ == '__main__': # print(xhtml_code_to_shell_colors(""" # # #
# Wow, I'm green # with envy! #
# # # """)) print(poezio_colors_to_html('\x191red\x19o \x192green\x19o \x19b\x192green and bold'))