441 lines
13 KiB
Python
441 lines
13 KiB
Python
# Copyright 2010-2011 Florent Le Coz <louiz@louiz.org>
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#
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# This file is part of Poezio.
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#
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# Poezio is free software: you can redistribute it and/or modify
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# it under the terms of the zlib license. See the COPYING file.
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"""
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Various methods to convert
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shell colors to poezio colors,
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xhtml code to shell colors,
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poezio colors to xhtml code
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"""
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import re
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import subprocess
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import curses
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from sleekxmpp.xmlstream import ET
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import xml.sax.saxutils
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from xml.etree.ElementTree import ElementTree
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from sys import version_info
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from config import config
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import logging
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digits = '0123456789' # never trust the modules
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colors = {
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'aliceblue': 231,
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'antiquewhite': 231,
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'aqua': 51,
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'aquamarine': 122,
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'azure': 231,
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'beige': 231,
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'bisque': 230,
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'black': 232,
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'blanchedalmond': 230,
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'blue': 21,
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'blueviolet': 135,
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'brown': 124,
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'burlywood': 223,
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'cadetblue': 109,
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'chartreuse': 118,
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'chocolate': 172,
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'coral': 209,
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'cornflowerblue': 111,
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'cornsilk': 231,
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'crimson': 197,
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'cyan': 51,
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'darkblue': 19,
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'darkcyan': 37,
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'darkgoldenrod': 178,
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'darkgray': 247,
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'darkgreen': 28,
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'darkgrey': 247,
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'darkkhaki': 186,
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'darkmagenta': 127,
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'darkolivegreen': 65,
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'darkorange': 214,
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'darkorchid': 134,
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'darkred': 124,
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'darksalmon': 216,
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'darkseagreen': 151,
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'darkslateblue': 61,
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'darkslategray': 59,
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'darkslategrey': 59,
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'darkturquoise': 44,
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'darkviolet': 128,
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'deeppink': 199,
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'deepskyblue': 45,
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'dimgray': 241,
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'dimgrey': 241,
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'dodgerblue': 39,
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'firebrick': 160,
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'floralwhite': 231,
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'forestgreen': 34,
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'fuchsia': 201,
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'gainsboro': 252,
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'ghostwhite': 231,
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'gold': 226,
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'goldenrod': 214,
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'gray': 244,
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'green': 34,
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'greenyellow': 191,
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'grey': 244,
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'honeydew': 231,
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'hotpink': 212,
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'indianred': 174,
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'indigo': 55,
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'ivory': 231,
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'khaki': 229,
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'lavender': 231,
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'lavenderblush': 231,
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'lawngreen': 118,
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'lemonchiffon': 230,
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'lightblue': 195,
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'lightcoral': 217,
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'lightcyan': 231,
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'lightgoldenrodyellow': 230,
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'lightgray': 251,
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'lightgreen': 157,
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'lightgrey': 251,
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'lightpink': 224,
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'lightsalmon': 216,
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'lightseagreen': 43,
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'lightskyblue': 153,
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'lightslategray': 109,
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'lightslategrey': 109,
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'lightsteelblue': 189,
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'lightyellow': 231,
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'lime': 46,
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'limegreen': 77,
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'linen': 231,
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'magenta': 201,
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'maroon': 124,
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'mediumaquamarine': 115,
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'mediumblue': 20,
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'mediumorchid': 170,
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'mediumpurple': 141,
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'mediumseagreen': 78,
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'mediumslateblue': 105,
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'mediumspringgreen': 49,
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'mediumturquoise': 80,
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'mediumvioletred': 163,
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'midnightblue': 18,
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'mintcream': 231,
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'mistyrose': 231,
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'moccasin': 230,
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'navajowhite': 230,
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'navy': 19,
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'oldlace': 231,
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'olive': 142,
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'olivedrab': 106,
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'orange': 214,
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'orangered': 202,
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'orchid': 213,
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'palegoldenrod': 229,
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'palegreen': 157,
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'paleturquoise': 195,
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'palevioletred': 211,
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'papayawhip': 231,
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'peachpuff': 230,
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'peru': 179,
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'pink': 224,
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'plum': 219,
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'powderblue': 195,
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'purple': 127,
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'red': 196,
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'rosybrown': 181,
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'royalblue': 69,
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'saddlebrown': 130,
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'salmon': 216,
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'sandybrown': 216,
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'seagreen': 72,
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'seashell': 231,
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'sienna': 131,
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'silver': 250,
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'skyblue': 153,
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'slateblue': 104,
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'slategray': 109,
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'slategrey': 109,
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'snow': 231,
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'springgreen': 48,
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'steelblue': 74,
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'tan': 187,
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'teal': 37,
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'thistle': 225,
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'tomato': 209,
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'turquoise': 86,
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'violet': 219,
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'wheat': 230,
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'white': 255,
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'whitesmoke': 255,
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'yellow': 226,
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'yellowgreen': 149
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}
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log = logging.getLogger(__name__)
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whitespace_re = re.compile(r'\s+')
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xhtml_attr_re = re.compile(r'\x19\d{0,3}\}|\x19[buaio]')
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xhtml_simple_attr_re = re.compile(r'\x19\d')
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def get_body_from_message_stanza(message):
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"""
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Returns a string with xhtml markups converted to
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poezio colors if there's an xhtml_im element, or
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the body (without any color) otherwise
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"""
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if config.get('enable_xhtml_im', 'true') == 'true':
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xhtml_body = message['xhtml_im']
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if xhtml_body:
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content = xhtml_to_poezio_colors(xhtml_body)
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content = content if content else message['body']
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return content or " "
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return message['body']
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def ncurses_color_to_html(color):
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"""
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Takes an int between 0 and 256 and returns
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a string of the form #XXXXXX representing an
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html color.
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"""
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if color <= 15:
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try:
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(r, g, b) = curses.color_content(color)
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except: # fallback in faulty terminals (e.g. xterm)
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(r, g, b) = curses.color_content(color%8)
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r = r / 1000 * 6 - 0.01
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g = g / 1000 * 6 - 0.01
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b = b / 1000 * 6 - 0.01
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elif color <= 231:
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color = color - 16
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r = color % 6
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color = color / 6
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g = color % 6
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color = color / 6
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b = color % 6
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else:
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color -= 232
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r = g = b = color / 24 * 6
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return '#%02X%02X%02X' % (r*256/6, g*256/6, b*256/6)
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def xhtml_to_poezio_colors(text):
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def parse_css(css):
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def get_color(value):
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if value[0] == '#':
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value = value[1:]
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length = len(value)
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if length != 3 and length != 6:
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return -1
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value = int(value, 16)
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if length == 6:
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r = int(value >> 16)
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g = int((value >> 8) & 0xff)
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b = int(value & 0xff)
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if r == g == b:
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return 232 + int(r/10.6251)
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div = 42.51
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else:
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r = int(value >> 8)
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g = int((value >> 4) & 0xf)
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b = int(value & 0xf)
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if r == g == b:
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return 232 + int(1.54*r)
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div = 2.51
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return 6*6*int(r/div) + 6*int(g/div) + int(b/div) + 16
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if value in colors:
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return colors[value]
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return -1
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shell = ''
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rules = css.split(';')
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for rule in rules:
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if ':' not in rule:
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continue
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key, value = rule.split(':', 1)
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key = key.strip()
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value = value.strip()
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if key == 'background-color':
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pass#shell += '\x191'
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elif key == 'color':
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color = get_color(value)
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if color != -1:
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shell += '\x19%d}' % color
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elif key == 'font-style':
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shell += '\x19i'
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elif key == 'font-weight':
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shell += '\x19b'
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elif key == 'margin-left':
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shell += ' '
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elif key == 'text-align':
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pass
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elif key == 'text-decoration':
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if value == 'underline':
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shell += '\x19u'
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elif value == 'blink':
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shell += '\x19a'
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return shell
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def trim(string):
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return re.sub(whitespace_re, ' ', string)
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xml = ET.fromstring(text)
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message = ''
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if version_info[1] == 2:
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elems = xml.iter()
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else:
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elems = xml.getiterator()
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for elem in elems:
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if elem.tag == '{http://www.w3.org/1999/xhtml}a':
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if 'href' in elem.attrib and elem.attrib['href'] != elem.text:
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message += '\x19u%s\x19o (%s)' % (trim(elem.attrib['href']), trim(elem.text if elem.text else ""))
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else:
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message += '\x19u' + (elem.text if elem.text else "") + '\x19o'
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elif elem.tag == '{http://www.w3.org/1999/xhtml}blockquote':
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message += '“'
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elif elem.tag == '{http://www.w3.org/1999/xhtml}body':
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pass
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elif elem.tag == '{http://www.w3.org/1999/xhtml}br':
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message += '\n'
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elif elem.tag == '{http://www.w3.org/1999/xhtml}cite':
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message += '\x19u'
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elif elem.tag == '{http://www.w3.org/1999/xhtml}em':
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message += '\x19i'
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elif elem.tag == '{http://www.w3.org/1999/xhtml}img' and 'src' in elem.attrib:
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if 'alt' in elem.attrib:
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message += '%s (%s)' % (trim(elem.attrib['src']), trim(elem.attrib['alt']))
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else:
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message += elem.attrib['src']
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elif elem.tag == '{http://www.w3.org/1999/xhtml}li':
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pass
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elif elem.tag == '{http://www.w3.org/1999/xhtml}ol':
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pass
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elif elem.tag == '{http://www.w3.org/1999/xhtml}p':
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pass
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elif elem.tag == '{http://www.w3.org/1999/xhtml}span':
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pass
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elif elem.tag == '{http://www.w3.org/1999/xhtml}strong':
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message += '\x19b'
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elif elem.tag == '{http://www.w3.org/1999/xhtml}ul':
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pass
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if ('style' in elem.attrib and elem.tag != '{http://www.w3.org/1999/xhtml}br'
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and elem.tag != '{http://www.w3.org/1999/xhtml}em'
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and elem.tag != '{http://www.w3.org/1999/xhtml}strong'):
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message += parse_css(elem.attrib['style'])
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if (elem.text and elem.tag != '{http://www.w3.org/1999/xhtml}a'
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and elem.tag != '{http://www.w3.org/1999/xhtml}br'
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and elem.tag != '{http://www.w3.org/1999/xhtml}img'):
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message += trim(elem.text)
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if ('style' in elem.attrib and elem.tag != '{http://www.w3.org/1999/xhtml}br'
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and elem.tag != '{http://www.w3.org/1999/xhtml}em'
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and elem.tag != '{http://www.w3.org/1999/xhtml}strong'):
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message += '\x19o'
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if elem.tag == '{http://www.w3.org/1999/xhtml}blockquote':
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message += '”'
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elif elem.tag == '{http://www.w3.org/1999/xhtml}cite':
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message += '\x19o'
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elif elem.tag == '{http://www.w3.org/1999/xhtml}em':
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message += '\x19o'
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elif elem.tag == '{http://www.w3.org/1999/xhtml}strong' or elem.tag == '{http://www.w3.org/1999/xhtml}b':
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message += '\x19o'
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elif elem.tag == '{http://www.w3.org/1999/xhtml}u':
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message += '\x19o'
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if 'title' in elem.attrib:
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message += ' [' + elem.attrib['title'] + ']'
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if elem.tail:
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message += trim(elem.tail)
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return message
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def clean_text(s):
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"""
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Remove all xhtml-im attributes (\x19etc) from the string with the
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complete color format, i.e \x19xxx}
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"""
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s = re.sub(xhtml_attr_re, "", s)
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return s
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def clean_text_simple(string):
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"""
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Remove all \x19 from the string formatted with simple colors:
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\x198
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"""
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pos = string.find('\x19')
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while pos != -1:
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string = string[:pos] + string[pos+2:]
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pos = string.find('\x19')
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return string
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def convert_simple_to_full_colors(text):
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"""
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takes a \x19n formatted string and returns
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a \x19n} formatted one.
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"""
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def add_curly_bracket(match):
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return match.group(0) + '}'
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return re.sub(xhtml_simple_attr_re, add_curly_bracket, text)
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number_to_color_names = {
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1: 'red',
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2: 'green',
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3: 'yellow',
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4: 'blue',
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5: 'violet',
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6: 'turquoise',
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7: 'white'
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}
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def poezio_colors_to_html(string):
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"""
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Convert poezio colors to html makups
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(e.g. \x191: <span style='color: red'>)
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"""
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# TODO underlined
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# a list of all opened elements, e.g. ['strong', 'span']
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# So that we know what we need to close
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opened_elements = []
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res = "<body xmlns='http://www.w3.org/1999/xhtml'><p>"
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next_attr_char = string.find('\x19')
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while next_attr_char != -1:
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attr_char = string[next_attr_char+1].lower()
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if next_attr_char != 0:
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res += xml.sax.saxutils.escape(string[:next_attr_char])
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if attr_char == 'o':
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for elem in opened_elements[::-1]:
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res += '</%s>' % (elem,)
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opened_elements = []
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elif attr_char == 'b':
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if 'strong' not in opened_elements:
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opened_elements.append('strong')
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res += '<strong>'
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if attr_char in digits:
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number_str = string[next_attr_char+1:string.find('}', next_attr_char)]
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number = int(number_str)
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if 'strong' in opened_elements:
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res += '</strong>'
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opened_elements.remove('strong')
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if 'span' in opened_elements:
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res += '</span>'
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else:
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opened_elements.append('span')
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res += "<span style='color: %s'>" % (ncurses_color_to_html(number),)
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string = string[next_attr_char+len(number_str)+2:]
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else:
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string = string[next_attr_char+2:]
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next_attr_char = string.find('\x19')
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res += xml.sax.saxutils.escape(string)
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for elem in opened_elements[::-1]:
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res += '</%s>' % (elem,)
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res += "</p></body>"
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return res.replace('\n', '<br />')
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