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| # -*- coding: utf-8 -*- | |
| """ | |
| pygments.formatters.terminal256 | |
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
| Formatter for 256-color terminal output with ANSI sequences. | |
| RGB-to-XTERM color conversion routines adapted from xterm256-conv | |
| tool (http://frexx.de/xterm-256-notes/data/xterm256-conv2.tar.bz2) | |
| by Wolfgang Frisch. | |
| Formatter version 1. | |
| :copyright: Copyright 2006-2013 by the Pygments team, see AUTHORS. | |
| :license: BSD, see LICENSE for details. | |
| """ | |
| # TODO: | |
| # - Options to map style's bold/underline/italic/border attributes | |
| # to some ANSI attrbutes (something like 'italic=underline') | |
| # - An option to output "style RGB to xterm RGB/index" conversion table | |
| # - An option to indicate that we are running in "reverse background" | |
| # xterm. This means that default colors are white-on-black, not | |
| # black-on-while, so colors like "white background" need to be converted | |
| # to "white background, black foreground", etc... | |
| import sys | |
| from pygments.formatter import Formatter | |
| __all__ = ['Terminal256Formatter'] | |
| class EscapeSequence: | |
| def __init__(self, fg=None, bg=None, bold=False, underline=False): | |
| self.fg = fg | |
| self.bg = bg | |
| self.bold = bold | |
| self.underline = underline | |
| def escape(self, attrs): | |
| if len(attrs): | |
| return "\x1b[" + ";".join(attrs) + "m" | |
| return "" | |
| def color_string(self): | |
| attrs = [] | |
| if self.fg is not None: | |
| attrs.extend(("38", "5", "%i" % self.fg)) | |
| if self.bg is not None: | |
| attrs.extend(("48", "5", "%i" % self.bg)) | |
| if self.bold: | |
| attrs.append("01") | |
| if self.underline: | |
| attrs.append("04") | |
| return self.escape(attrs) | |
| def reset_string(self): | |
| attrs = [] | |
| if self.fg is not None: | |
| attrs.append("39") | |
| if self.bg is not None: | |
| attrs.append("49") | |
| if self.bold or self.underline: | |
| attrs.append("00") | |
| return self.escape(attrs) | |
| class Terminal256Formatter(Formatter): | |
| r""" | |
| Format tokens with ANSI color sequences, for output in a 256-color | |
| terminal or console. Like in `TerminalFormatter` color sequences | |
| are terminated at newlines, so that paging the output works correctly. | |
| The formatter takes colors from a style defined by the `style` option | |
| and converts them to nearest ANSI 256-color escape sequences. Bold and | |
| underline attributes from the style are preserved (and displayed). | |
| *New in Pygments 0.9.* | |
| Options accepted: | |
| `style` | |
| The style to use, can be a string or a Style subclass (default: | |
| ``'default'``). | |
| """ | |
| name = 'Terminal256' | |
| aliases = ['terminal256', 'console256', '256'] | |
| filenames = [] | |
| def __init__(self, **options): | |
| Formatter.__init__(self, **options) | |
| self.xterm_colors = [] | |
| self.best_match = {} | |
| self.style_string = {} | |
| self.usebold = 'nobold' not in options | |
| self.useunderline = 'nounderline' not in options | |
| self._build_color_table() # build an RGB-to-256 color conversion table | |
| self._setup_styles() # convert selected style's colors to term. colors | |
| def _build_color_table(self): | |
| # colors 0..15: 16 basic colors | |
| self.xterm_colors.append((0x00, 0x00, 0x00)) # 0 | |
| self.xterm_colors.append((0xcd, 0x00, 0x00)) # 1 | |
| self.xterm_colors.append((0x00, 0xcd, 0x00)) # 2 | |
| self.xterm_colors.append((0xcd, 0xcd, 0x00)) # 3 | |
| self.xterm_colors.append((0x00, 0x00, 0xee)) # 4 | |
| self.xterm_colors.append((0xcd, 0x00, 0xcd)) # 5 | |
| self.xterm_colors.append((0x00, 0xcd, 0xcd)) # 6 | |
| self.xterm_colors.append((0xe5, 0xe5, 0xe5)) # 7 | |
| self.xterm_colors.append((0x7f, 0x7f, 0x7f)) # 8 | |
| self.xterm_colors.append((0xff, 0x00, 0x00)) # 9 | |
| self.xterm_colors.append((0x00, 0xff, 0x00)) # 10 | |
| self.xterm_colors.append((0xff, 0xff, 0x00)) # 11 | |
| self.xterm_colors.append((0x5c, 0x5c, 0xff)) # 12 | |
| self.xterm_colors.append((0xff, 0x00, 0xff)) # 13 | |
| self.xterm_colors.append((0x00, 0xff, 0xff)) # 14 | |
| self.xterm_colors.append((0xff, 0xff, 0xff)) # 15 | |
| # colors 16..232: the 6x6x6 color cube | |
| valuerange = (0x00, 0x5f, 0x87, 0xaf, 0xd7, 0xff) | |
| for i in range(217): | |
| r = valuerange[(i // 36) % 6] | |
| g = valuerange[(i // 6) % 6] | |
| b = valuerange[i % 6] | |
| self.xterm_colors.append((r, g, b)) | |
| # colors 233..253: grayscale | |
| for i in range(1, 22): | |
| v = 8 + i * 10 | |
| self.xterm_colors.append((v, v, v)) | |
| def _closest_color(self, r, g, b): | |
| distance = 257*257*3 # "infinity" (>distance from #000000 to #ffffff) | |
| match = 0 | |
| for i in range(0, 254): | |
| values = self.xterm_colors[i] | |
| rd = r - values[0] | |
| gd = g - values[1] | |
| bd = b - values[2] | |
| d = rd*rd + gd*gd + bd*bd | |
| if d < distance: | |
| match = i | |
| distance = d | |
| return match | |
| def _color_index(self, color): | |
| index = self.best_match.get(color, None) | |
| if index is None: | |
| try: | |
| rgb = int(str(color), 16) | |
| except ValueError: | |
| rgb = 0 | |
| r = (rgb >> 16) & 0xff | |
| g = (rgb >> 8) & 0xff | |
| b = rgb & 0xff | |
| index = self._closest_color(r, g, b) | |
| self.best_match[color] = index | |
| return index | |
| def _setup_styles(self): | |
| for ttype, ndef in self.style: | |
| escape = EscapeSequence() | |
| if ndef['color']: | |
| escape.fg = self._color_index(ndef['color']) | |
| if ndef['bgcolor']: | |
| escape.bg = self._color_index(ndef['bgcolor']) | |
| if self.usebold and ndef['bold']: | |
| escape.bold = True | |
| if self.useunderline and ndef['underline']: | |
| escape.underline = True | |
| self.style_string[str(ttype)] = (escape.color_string(), | |
| escape.reset_string()) | |
| def format(self, tokensource, outfile): | |
| # hack: if the output is a terminal and has an encoding set, | |
| # use that to avoid unicode encode problems | |
| if not self.encoding and hasattr(outfile, "encoding") and \ | |
| hasattr(outfile, "isatty") and outfile.isatty() and \ | |
| sys.version_info < (3,): | |
| self.encoding = outfile.encoding | |
| return Formatter.format(self, tokensource, outfile) | |
| def format_unencoded(self, tokensource, outfile): | |
| for ttype, value in tokensource: | |
| not_found = True | |
| while ttype and not_found: | |
| try: | |
| #outfile.write( "<" + str(ttype) + ">" ) | |
| on, off = self.style_string[str(ttype)] | |
| # Like TerminalFormatter, add "reset colors" escape sequence | |
| # on newline. | |
| spl = value.split('\n') | |
| for line in spl[:-1]: | |
| if line: | |
| outfile.write(on + line + off) | |
| outfile.write('\n') | |
| if spl[-1]: | |
| outfile.write(on + spl[-1] + off) | |
| not_found = False | |
| #outfile.write( '#' + str(ttype) + '#' ) | |
| except KeyError: | |
| #ottype = ttype | |
| ttype = ttype[:-1] | |
| #outfile.write( '!' + str(ottype) + '->' + str(ttype) + '!' ) | |
| if not_found: | |
| outfile.write(value) |