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comparison: ThirdParty/Pygments/pygments/formatters/terminal256.py
ThirdParty/Pygments/pygments/formatters/terminal256.py
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| 1 # -*- coding: utf-8 -*- | |
| 2 """ | |
| 3 pygments.formatters.terminal256 | |
| 4 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
| 5 | |
| 6 Formatter for 256-color terminal output with ANSI sequences. | |
| 7 | |
| 8 RGB-to-XTERM color conversion routines adapted from xterm256-conv | |
| 9 tool (http://frexx.de/xterm-256-notes/data/xterm256-conv2.tar.bz2) | |
| 10 by Wolfgang Frisch. | |
| 11 | |
| 12 Formatter version 1. | |
| 13 | |
| 14 :copyright: Copyright 2006-2009 by the Pygments team, see AUTHORS. | |
| 15 :license: BSD, see LICENSE for details. | |
| 16 """ | |
| 17 | |
| 18 # TODO: | |
| 19 # - Options to map style's bold/underline/italic/border attributes | |
| 20 # to some ANSI attrbutes (something like 'italic=underline') | |
| 21 # - An option to output "style RGB to xterm RGB/index" conversion table | |
| 22 # - An option to indicate that we are running in "reverse background" | |
| 23 # xterm. This means that default colors are white-on-black, not | |
| 24 # black-on-while, so colors like "white background" need to be converted | |
| 25 # to "white background, black foreground", etc... | |
| 26 | |
| 27 from pygments.formatter import Formatter | |
| 28 | |
| 29 | |
| 30 __all__ = ['Terminal256Formatter'] | |
| 31 | |
| 32 | |
| 33 class EscapeSequence: | |
| 34 def __init__(self, fg=None, bg=None, bold=False, underline=False): | |
| 35 self.fg = fg | |
| 36 self.bg = bg | |
| 37 self.bold = bold | |
| 38 self.underline = underline | |
| 39 | |
| 40 def escape(self, attrs): | |
| 41 if len(attrs): | |
| 42 return "\x1b[" + ";".join(attrs) + "m" | |
| 43 return "" | |
| 44 | |
| 45 def color_string(self): | |
| 46 attrs = [] | |
| 47 if self.fg is not None: | |
| 48 attrs.extend(("38", "5", "%i" % self.fg)) | |
| 49 if self.bg is not None: | |
| 50 attrs.extend(("48", "5", "%i" % self.bg)) | |
| 51 if self.bold: | |
| 52 attrs.append("01") | |
| 53 if self.underline: | |
| 54 attrs.append("04") | |
| 55 return self.escape(attrs) | |
| 56 | |
| 57 def reset_string(self): | |
| 58 attrs = [] | |
| 59 if self.fg is not None: | |
| 60 attrs.append("39") | |
| 61 if self.bg is not None: | |
| 62 attrs.append("49") | |
| 63 if self.bold or self.underline: | |
| 64 attrs.append("00") | |
| 65 return self.escape(attrs) | |
| 66 | |
| 67 class Terminal256Formatter(Formatter): | |
| 68 r""" | |
| 69 Format tokens with ANSI color sequences, for output in a 256-color | |
| 70 terminal or console. Like in `TerminalFormatter` color sequences | |
| 71 are terminated at newlines, so that paging the output works correctly. | |
| 72 | |
| 73 The formatter takes colors from a style defined by the `style` option | |
| 74 and converts them to nearest ANSI 256-color escape sequences. Bold and | |
| 75 underline attributes from the style are preserved (and displayed). | |
| 76 | |
| 77 *New in Pygments 0.9.* | |
| 78 | |
| 79 Options accepted: | |
| 80 | |
| 81 `style` | |
| 82 The style to use, can be a string or a Style subclass (default: | |
| 83 ``'default'``). | |
| 84 """ | |
| 85 name = 'Terminal256' | |
| 86 aliases = ['terminal256', 'console256', '256'] | |
| 87 filenames = [] | |
| 88 | |
| 89 def __init__(self, **options): | |
| 90 Formatter.__init__(self, **options) | |
| 91 | |
| 92 self.xterm_colors = [] | |
| 93 self.best_match = {} | |
| 94 self.style_string = {} | |
| 95 | |
| 96 self.usebold = 'nobold' not in options | |
| 97 self.useunderline = 'nounderline' not in options | |
| 98 | |
| 99 self._build_color_table() # build an RGB-to-256 color conversion table | |
| 100 self._setup_styles() # convert selected style's colors to term. colors | |
| 101 | |
| 102 def _build_color_table(self): | |
| 103 # colors 0..15: 16 basic colors | |
| 104 | |
| 105 self.xterm_colors.append((0x00, 0x00, 0x00)) # 0 | |
| 106 self.xterm_colors.append((0xcd, 0x00, 0x00)) # 1 | |
| 107 self.xterm_colors.append((0x00, 0xcd, 0x00)) # 2 | |
| 108 self.xterm_colors.append((0xcd, 0xcd, 0x00)) # 3 | |
| 109 self.xterm_colors.append((0x00, 0x00, 0xee)) # 4 | |
| 110 self.xterm_colors.append((0xcd, 0x00, 0xcd)) # 5 | |
| 111 self.xterm_colors.append((0x00, 0xcd, 0xcd)) # 6 | |
| 112 self.xterm_colors.append((0xe5, 0xe5, 0xe5)) # 7 | |
| 113 self.xterm_colors.append((0x7f, 0x7f, 0x7f)) # 8 | |
| 114 self.xterm_colors.append((0xff, 0x00, 0x00)) # 9 | |
| 115 self.xterm_colors.append((0x00, 0xff, 0x00)) # 10 | |
| 116 self.xterm_colors.append((0xff, 0xff, 0x00)) # 11 | |
| 117 self.xterm_colors.append((0x5c, 0x5c, 0xff)) # 12 | |
| 118 self.xterm_colors.append((0xff, 0x00, 0xff)) # 13 | |
| 119 self.xterm_colors.append((0x00, 0xff, 0xff)) # 14 | |
| 120 self.xterm_colors.append((0xff, 0xff, 0xff)) # 15 | |
| 121 | |
| 122 # colors 16..232: the 6x6x6 color cube | |
| 123 | |
| 124 valuerange = (0x00, 0x5f, 0x87, 0xaf, 0xd7, 0xff) | |
| 125 | |
| 126 for i in range(217): | |
| 127 r = valuerange[(i // 36) % 6] | |
| 128 g = valuerange[(i // 6) % 6] | |
| 129 b = valuerange[i % 6] | |
| 130 self.xterm_colors.append((r, g, b)) | |
| 131 | |
| 132 # colors 233..253: grayscale | |
| 133 | |
| 134 for i in range(1, 22): | |
| 135 v = 8 + i * 10 | |
| 136 self.xterm_colors.append((v, v, v)) | |
| 137 | |
| 138 def _closest_color(self, r, g, b): | |
| 139 distance = 257*257*3 # "infinity" (>distance from #000000 to #ffffff) | |
| 140 match = 0 | |
| 141 | |
| 142 for i in range(0, 254): | |
| 143 values = self.xterm_colors[i] | |
| 144 | |
| 145 rd = r - values[0] | |
| 146 gd = g - values[1] | |
| 147 bd = b - values[2] | |
| 148 d = rd*rd + gd*gd + bd*bd | |
| 149 | |
| 150 if d < distance: | |
| 151 match = i | |
| 152 distance = d | |
| 153 return match | |
| 154 | |
| 155 def _color_index(self, color): | |
| 156 index = self.best_match.get(color, None) | |
| 157 if index is None: | |
| 158 try: | |
| 159 rgb = int(str(color), 16) | |
| 160 except ValueError: | |
| 161 rgb = 0 | |
| 162 | |
| 163 r = (rgb >> 16) & 0xff | |
| 164 g = (rgb >> 8) & 0xff | |
| 165 b = rgb & 0xff | |
| 166 index = self._closest_color(r, g, b) | |
| 167 self.best_match[color] = index | |
| 168 return index | |
| 169 | |
| 170 def _setup_styles(self): | |
| 171 for ttype, ndef in self.style: | |
| 172 escape = EscapeSequence() | |
| 173 if ndef['color']: | |
| 174 escape.fg = self._color_index(ndef['color']) | |
| 175 if ndef['bgcolor']: | |
| 176 escape.bg = self._color_index(ndef['bgcolor']) | |
| 177 if self.usebold and ndef['bold']: | |
| 178 escape.bold = True | |
| 179 if self.useunderline and ndef['underline']: | |
| 180 escape.underline = True | |
| 181 self.style_string[str(ttype)] = (escape.color_string(), | |
| 182 escape.reset_string()) | |
| 183 | |
| 184 def format(self, tokensource, outfile): | |
| 185 # hack: if the output is a terminal and has an encoding set, | |
| 186 # use that to avoid unicode encode problems | |
| 187 if not self.encoding and hasattr(outfile, "encoding") and \ | |
| 188 hasattr(outfile, "isatty") and outfile.isatty(): | |
| 189 self.encoding = outfile.encoding | |
| 190 return Formatter.format(self, tokensource, outfile) | |
| 191 | |
| 192 def format_unencoded(self, tokensource, outfile): | |
| 193 for ttype, value in tokensource: | |
| 194 not_found = True | |
| 195 while ttype and not_found: | |
| 196 try: | |
| 197 #outfile.write( "<" + str(ttype) + ">" ) | |
| 198 on, off = self.style_string[str(ttype)] | |
| 199 | |
| 200 # Like TerminalFormatter, add "reset colors" escape sequence | |
| 201 # on newline. | |
| 202 spl = value.split('\n') | |
| 203 for line in spl[:-1]: | |
| 204 if line: | |
| 205 outfile.write(on + line + off) | |
| 206 outfile.write('\n') | |
| 207 if spl[-1]: | |
| 208 outfile.write(on + spl[-1] + off) | |
| 209 | |
| 210 not_found = False | |
| 211 #outfile.write( '#' + str(ttype) + '#' ) | |
| 212 | |
| 213 except KeyError: | |
| 214 #ottype = ttype | |
| 215 ttype = ttype[:-1] | |
| 216 #outfile.write( '!' + str(ottype) + '->' + str(ttype) + '!' ) | |
| 217 | |
| 218 if not_found: | |
| 219 outfile.write(value) |
