#!/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 from sleekxmpp.xmlstream import ET from xml.etree.ElementTree import ElementTree from config import config import logging log = logging.getLogger(__name__) shell_colors_re = re.compile(r'(\[(?:\d+;)*(?:\d+m))') start_indent_re = re.compile(r'\[0;30m\[0;37m ') newline_indent_re = re.compile('\n\[0;37m ') 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 """ if config.get('enable_xhtml_im', 'true') == 'true': xhtml_body = message['xhtml_im'] if xhtml_body: xhtml_body = convert_links_to_plaintext(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'] def convert_links_to_plaintext(text): """ Replace click by (click) in plain text """ log.debug(text) xml = ElementTree(ET.fromstring(text)) for parent in xml.getiterator(): previous_child = None for child in parent: if child.tag == '{http://www.w3.org/1999/xhtml}a': link_text = '\n%s (%s)'%(child.attrib['href'], child.text) if previous_child is not None: if previous_child.tail is None: previous_child.tail = link_text else: previous_child.tail += link_text else: if parent.text is None: parent.text = link_text else: parent.text += link_text parent.remove(child) previous_child = child return ET.tostring(xml.getroot()) def clean_text(string): """ Remove all \x19 from the string """ pos = string.find('\x19') while pos != -1: string = string[:pos] + string[pos+2:] pos = string.find('\x19') return string number_to_color_names = { 1: 'red', 2: 'green', 3: 'yellow', 4: 'blue', 5: 'violet', 6: 'turquoise', 7: 'white' } 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 += '' else: opened_elements.append('span') res += "" % (number_to_color_names[number]) 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 = 1: activate bold 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 += '\x19o' elif num == 1: res += '\x19b' elif num >= 31 and num <= 37: res += '\x19%d' % ((num-30)%7,) return res def remove_elinks_indent(string): lines = string.split('\n') for i, line in enumerate(lines): lines[i] = re.sub(' ', '', line, 1) return '\n'.join(lines) res = shell_colors_re.sub(repl, string).strip() res = remove_elinks_indent(res) return res 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() def poezio_colors_to_xhtml(string): """ Generate a valid xhtml string from the poezio colors in the given string """ res = "" next_attr_char = string.find('\x19') open_elements = [] 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': # close all opened elements for elem in open_elements: res += '' open_elements = [] elif attr_char == 'b': if 'strong' not in open_elements: res += '' open_elements.append('strong') elif attr_char.isdigit(): self._win.attron(common.curses_color_pair(int(attr_char))) next_attr_char = string.find('\x19')