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terminal256.py
""" 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 2006-2024 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... from pip._vendor.pygments.formatter import Formatter from pip._vendor.pygments.console import codes from pip._vendor.pygments.style import ansicolors __all__ = ['Terminal256Formatter', 'TerminalTrueColorFormatter'] class EscapeSequence: def __init__(self, fg=None, bg=None, bold=False, underline=False, italic=False): self.fg = fg self.bg = bg self.bold = bold self.underline = underline self.italic = italic def escape(self, attrs): if len(attrs): return "\x1b[" + ";".join(attrs) + "m" return "" def color_string(self): attrs = [] if self.fg is not None: if self.fg in ansicolors: esc = codes[self.fg.replace('ansi','')] if ';01m' in esc: self.bold = True # extract fg color code. attrs.append(esc[2:4]) else: attrs.extend(("38", "5", "%i" % self.fg)) if self.bg is not None: if self.bg in ansicolors: esc = codes[self.bg.replace('ansi','')] # extract fg color code, add 10 for bg. attrs.append(str(int(esc[2:4])+10)) else: attrs.extend(("48", "5", "%i" % self.bg)) if self.bold: attrs.append("01") if self.underline: attrs.append("04") if self.italic: attrs.append("03") return self.escape(attrs) def true_color_string(self): attrs = [] if self.fg: attrs.extend(("38", "2", str(self.fg[0]), str(self.fg[1]), str(self.fg[2]))) if self.bg: attrs.extend(("48", "2", str(self.bg[0]), str(self.bg[1]), str(self.bg[2]))) if self.bold: attrs.append("01") if self.underline: attrs.append("04") if self.italic: attrs.append("03") 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 or self.italic: attrs.append("00") return self.escape(attrs) class Terminal256Formatter(Formatter): """ 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). .. versionadded:: 0.9 .. versionchanged:: 2.2 If the used style defines foreground colors in the form ``#ansi*``, then `Terminal256Formatter` will map these to non extended foreground color. See :ref:`AnsiTerminalStyle` for more information. .. versionchanged:: 2.4 The ANSI color names have been updated with names that are easier to understand and align with colornames of other projects and terminals. See :ref:`this table <new-ansi-color-names>` for more information. Options accepted: `style` The style to use, can be a string or a Style subclass (default: ``'default'``). `linenos` Set to ``True`` to have line numbers on the terminal output as well (default: ``False`` = no line numbers). """ 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.useitalic = 'noitalic' 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 self.linenos = options.get('linenos', False) self._lineno = 0 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 color in ansicolors: # strip the `ansi/#ansi` part and look up code index = color self.best_match[color] = index 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() # get foreground from ansicolor if set if ndef['ansicolor']: escape.fg = self._color_index(ndef['ansicolor']) elif ndef['color']: escape.fg = self._color_index(ndef['color']) if ndef['bgansicolor']: escape.bg = self._color_index(ndef['bgansicolor']) elif 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 if self.useitalic and ndef['italic']: escape.italic = True self.style_string[str(ttype)] = (escape.color_string(), escape.reset_string()) def _write_lineno(self, outfile): self._lineno += 1 outfile.write("%s%04d: " % (self._lineno != 1 and '\n' or '', self._lineno)) def format(self, tokensource, outfile): return Formatter.format(self, tokensource, outfile) def format_unencoded(self, tokensource, outfile): if self.linenos: self._write_lineno(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) if self.linenos: self._write_lineno(outfile) else: 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.parent # outfile.write( '!' + str(ottype) + '->' + str(ttype) + '!' ) if not_found: outfile.write(value) if self.linenos: outfile.write("\n") class TerminalTrueColorFormatter(Terminal256Formatter): r""" Format tokens with ANSI color sequences, for output in a true-color terminal or console. Like in `TerminalFormatter` color sequences are terminated at newlines, so that paging the output works correctly. .. versionadded:: 2.1 Options accepted: `style` The style to use, can be a string or a Style subclass (default: ``'default'``). """ name = 'TerminalTrueColor' aliases = ['terminal16m', 'console16m', '16m'] filenames = [] def _build_color_table(self): pass def _color_tuple(self, color): try: rgb = int(str(color), 16) except ValueError: return None r = (rgb >> 16) & 0xff g = (rgb >> 8) & 0xff b = rgb & 0xff return (r, g, b) def _setup_styles(self): for ttype, ndef in self.style: escape = EscapeSequence() if ndef['color']: escape.fg = self._color_tuple(ndef['color']) if ndef['bgcolor']: escape.bg = self._color_tuple(ndef['bgcolor']) if self.usebold and ndef['bold']: escape.bold = True if self.useunderline and ndef['underline']: escape.underline = True if self.useitalic and ndef['italic']: escape.italic = True self.style_string[str(ttype)] = (escape.true_color_string(), escape.reset_string())
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