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pygments
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rtf.py
""" pygments.formatters.rtf ~~~~~~~~~~~~~~~~~~~~~~~ A formatter that generates RTF files. :copyright: Copyright 2006-2024 by the Pygments team, see AUTHORS. :license: BSD, see LICENSE for details. """ from collections import OrderedDict from pip._vendor.pygments.formatter import Formatter from pip._vendor.pygments.style import _ansimap from pip._vendor.pygments.util import get_bool_opt, get_int_opt, get_list_opt, surrogatepair __all__ = ['RtfFormatter'] class RtfFormatter(Formatter): """ Format tokens as RTF markup. This formatter automatically outputs full RTF documents with color information and other useful stuff. Perfect for Copy and Paste into Microsoft(R) Word(R) documents. Please note that ``encoding`` and ``outencoding`` options are ignored. The RTF format is ASCII natively, but handles unicode characters correctly thanks to escape sequences. .. versionadded:: 0.6 Additional options accepted: `style` The style to use, can be a string or a Style subclass (default: ``'default'``). `fontface` The used font family, for example ``Bitstream Vera Sans``. Defaults to some generic font which is supposed to have fixed width. `fontsize` Size of the font used. Size is specified in half points. The default is 24 half-points, giving a size 12 font. .. versionadded:: 2.0 `linenos` Turn on line numbering (default: ``False``). .. versionadded:: 2.18 `lineno_fontsize` Font size for line numbers. Size is specified in half points (default: `fontsize`). .. versionadded:: 2.18 `lineno_padding` Number of spaces between the (inline) line numbers and the source code (default: ``2``). .. versionadded:: 2.18 `linenostart` The line number for the first line (default: ``1``). .. versionadded:: 2.18 `linenostep` If set to a number n > 1, only every nth line number is printed. .. versionadded:: 2.18 `lineno_color` Color for line numbers specified as a hex triplet, e.g. ``'5e5e5e'``. Defaults to the style's line number color if it is a hex triplet, otherwise ansi bright black. .. versionadded:: 2.18 `hl_lines` Specify a list of lines to be highlighted, as line numbers separated by spaces, e.g. ``'3 7 8'``. The line numbers are relative to the input (i.e. the first line is line 1) unless `hl_linenostart` is set. .. versionadded:: 2.18 `hl_color` Color for highlighting the lines specified in `hl_lines`, specified as a hex triplet (default: style's `highlight_color`). .. versionadded:: 2.18 `hl_linenostart` If set to ``True`` line numbers in `hl_lines` are specified relative to `linenostart` (default ``False``). .. versionadded:: 2.18 """ name = 'RTF' aliases = ['rtf'] filenames = ['*.rtf'] def __init__(self, **options): r""" Additional options accepted: ``fontface`` Name of the font used. Could for example be ``'Courier New'`` to further specify the default which is ``'\fmodern'``. The RTF specification claims that ``\fmodern`` are "Fixed-pitch serif and sans serif fonts". Hope every RTF implementation thinks the same about modern... """ Formatter.__init__(self, **options) self.fontface = options.get('fontface') or '' self.fontsize = get_int_opt(options, 'fontsize', 0) self.linenos = get_bool_opt(options, 'linenos', False) self.lineno_fontsize = get_int_opt(options, 'lineno_fontsize', self.fontsize) self.lineno_padding = get_int_opt(options, 'lineno_padding', 2) self.linenostart = abs(get_int_opt(options, 'linenostart', 1)) self.linenostep = abs(get_int_opt(options, 'linenostep', 1)) self.hl_linenostart = get_bool_opt(options, 'hl_linenostart', False) self.hl_color = options.get('hl_color', '') if not self.hl_color: self.hl_color = self.style.highlight_color self.hl_lines = [] for lineno in get_list_opt(options, 'hl_lines', []): try: lineno = int(lineno) if self.hl_linenostart: lineno = lineno - self.linenostart + 1 self.hl_lines.append(lineno) except ValueError: pass self.lineno_color = options.get('lineno_color', '') if not self.lineno_color: if self.style.line_number_color == 'inherit': # style color is the css value 'inherit' # default to ansi bright-black self.lineno_color = _ansimap['ansibrightblack'] else: # style color is assumed to be a hex triplet as other # colors in pygments/style.py self.lineno_color = self.style.line_number_color self.color_mapping = self._create_color_mapping() def _escape(self, text): return text.replace('\\', '\\\\') \ .replace('{', '\\{') \ .replace('}', '\\}') def _escape_text(self, text): # empty strings, should give a small performance improvement if not text: return '' # escape text text = self._escape(text) buf = [] for c in text: cn = ord(c) if cn < (2**7): # ASCII character buf.append(str(c)) elif (2**7) <= cn < (2**16): # single unicode escape sequence buf.append('{\\u%d}' % cn) elif (2**16) <= cn: # RTF limits unicode to 16 bits. # Force surrogate pairs buf.append('{\\u%d}{\\u%d}' % surrogatepair(cn)) return ''.join(buf).replace('\n', '\\par') @staticmethod def hex_to_rtf_color(hex_color): if hex_color[0] == "#": hex_color = hex_color[1:] return '\\red%d\\green%d\\blue%d;' % ( int(hex_color[0:2], 16), int(hex_color[2:4], 16), int(hex_color[4:6], 16) ) def _split_tokens_on_newlines(self, tokensource): """ Split tokens containing newline characters into multiple token each representing a line of the input file. Needed for numbering lines of e.g. multiline comments. """ for ttype, value in tokensource: if value == '\n': yield (ttype, value) elif "\n" in value: lines = value.split("\n") for line in lines[:-1]: yield (ttype, line+"\n") if lines[-1]: yield (ttype, lines[-1]) else: yield (ttype, value) def _create_color_mapping(self): """ Create a mapping of style hex colors to index/offset in the RTF color table. """ color_mapping = OrderedDict() offset = 1 if self.linenos: color_mapping[self.lineno_color] = offset offset += 1 if self.hl_lines: color_mapping[self.hl_color] = offset offset += 1 for _, style in self.style: for color in style['color'], style['bgcolor'], style['border']: if color and color not in color_mapping: color_mapping[color] = offset offset += 1 return color_mapping @property def _lineno_template(self): if self.lineno_fontsize != self.fontsize: return '{{\\fs{} \\cf{} %s{}}}'.format(self.lineno_fontsize, self.color_mapping[self.lineno_color], " " * self.lineno_padding) return '{{\\cf{} %s{}}}'.format(self.color_mapping[self.lineno_color], " " * self.lineno_padding) @property def _hl_open_str(self): return rf'{{\highlight{self.color_mapping[self.hl_color]} ' @property def _rtf_header(self): lines = [] # rtf 1.8 header lines.append('{\\rtf1\\ansi\\uc0\\deff0' '{\\fonttbl{\\f0\\fmodern\\fprq1\\fcharset0%s;}}' % (self.fontface and ' ' + self._escape(self.fontface) or '')) # color table lines.append('{\\colortbl;') for color, _ in self.color_mapping.items(): lines.append(self.hex_to_rtf_color(color)) lines.append('}') # font and fontsize lines.append('\\f0\\sa0') if self.fontsize: lines.append('\\fs%d' % self.fontsize) # ensure Libre Office Writer imports and renders consecutive # space characters the same width, needed for line numbering. # https://bugs.documentfoundation.org/show_bug.cgi?id=144050 lines.append('\\dntblnsbdb') return lines def format_unencoded(self, tokensource, outfile): for line in self._rtf_header: outfile.write(line + "\n") tokensource = self._split_tokens_on_newlines(tokensource) # first pass of tokens to count lines, needed for line numbering if self.linenos: line_count = 0 tokens = [] # for copying the token source generator for ttype, value in tokensource: tokens.append((ttype, value)) if value.endswith("\n"): line_count += 1 # width of line number strings (for padding with spaces) linenos_width = len(str(line_count+self.linenostart-1)) tokensource = tokens # highlight stream lineno = 1 start_new_line = True for ttype, value in tokensource: if start_new_line and lineno in self.hl_lines: outfile.write(self._hl_open_str) if start_new_line and self.linenos: if (lineno-self.linenostart+1)%self.linenostep == 0: current_lineno = lineno + self.linenostart - 1 lineno_str = str(current_lineno).rjust(linenos_width) else: lineno_str = "".rjust(linenos_width) outfile.write(self._lineno_template % lineno_str) while not self.style.styles_token(ttype) and ttype.parent: ttype = ttype.parent style = self.style.style_for_token(ttype) buf = [] if style['bgcolor']: buf.append('\\cb%d' % self.color_mapping[style['bgcolor']]) if style['color']: buf.append('\\cf%d' % self.color_mapping[style['color']]) if style['bold']: buf.append('\\b') if style['italic']: buf.append('\\i') if style['underline']: buf.append('\\ul') if style['border']: buf.append('\\chbrdr\\chcfpat%d' % self.color_mapping[style['border']]) start = ''.join(buf) if start: outfile.write(f'{{{start} ') outfile.write(self._escape_text(value)) if start: outfile.write('}') start_new_line = False # complete line of input if value.endswith("\n"): # close line highlighting if lineno in self.hl_lines: outfile.write('}') # newline in RTF file after closing } outfile.write("\n") start_new_line = True lineno += 1 outfile.write('}\n')
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