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""" pygments.formatters.svg ~~~~~~~~~~~~~~~~~~~~~~~ Formatter for SVG output. :copyright: Copyright 2006-2023 by the Pygments team, see AUTHORS. :license: BSD, see LICENSE for details. """ from pygments.formatter import Formatter from pygments.token import Comment from pygments.util import get_bool_opt, get_int_opt __all__ = ['SvgFormatter'] def escape_html(text): """Escape &, <, > as well as single and double quotes for HTML.""" return text.replace('&', '&'). \ replace('<', '<'). \ replace('>', '>'). \ replace('"', '"'). \ replace("'", ''') class2style = {} class SvgFormatter(Formatter): """ Format tokens as an SVG graphics file. This formatter is still experimental. Each line of code is a ``<text>`` element with explicit ``x`` and ``y`` coordinates containing ``<tspan>`` elements with the individual token styles. By default, this formatter outputs a full SVG document including doctype declaration and the ``<svg>`` root element. .. versionadded:: 0.9 Additional options accepted: `nowrap` Don't wrap the SVG ``<text>`` elements in ``<svg><g>`` elements and don't add a XML declaration and a doctype. If true, the `fontfamily` and `fontsize` options are ignored. Defaults to ``False``. `fontfamily` The value to give the wrapping ``<g>`` element's ``font-family`` attribute, defaults to ``"monospace"``. `fontsize` The value to give the wrapping ``<g>`` element's ``font-size`` attribute, defaults to ``"14px"``. `linenos` If ``True``, add line numbers (default: ``False``). `linenostart` The line number for the first line (default: ``1``). `linenostep` If set to a number n > 1, only every nth line number is printed. `linenowidth` Maximum width devoted to line numbers (default: ``3*ystep``, sufficient for up to 4-digit line numbers. Increase width for longer code blocks). `xoffset` Starting offset in X direction, defaults to ``0``. `yoffset` Starting offset in Y direction, defaults to the font size if it is given in pixels, or ``20`` else. (This is necessary since text coordinates refer to the text baseline, not the top edge.) `ystep` Offset to add to the Y coordinate for each subsequent line. This should roughly be the text size plus 5. It defaults to that value if the text size is given in pixels, or ``25`` else. `spacehack` Convert spaces in the source to `` ``, which are non-breaking spaces. SVG provides the ``xml:space`` attribute to control how whitespace inside tags is handled, in theory, the ``preserve`` value could be used to keep all whitespace as-is. However, many current SVG viewers don't obey that rule, so this option is provided as a workaround and defaults to ``True``. """ name = 'SVG' aliases = ['svg'] filenames = ['*.svg'] def __init__(self, **options): Formatter.__init__(self, **options) self.nowrap = get_bool_opt(options, 'nowrap', False) self.fontfamily = options.get('fontfamily', 'monospace') self.fontsize = options.get('fontsize', '14px') self.xoffset = get_int_opt(options, 'xoffset', 0) fs = self.fontsize.strip() if fs.endswith('px'): fs = fs[:-2].strip() try: int_fs = int(fs) except: int_fs = 20 self.yoffset = get_int_opt(options, 'yoffset', int_fs) self.ystep = get_int_opt(options, 'ystep', int_fs + 5) self.spacehack = get_bool_opt(options, 'spacehack', True) self.linenos = get_bool_opt(options,'linenos',False) self.linenostart = get_int_opt(options,'linenostart',1) self.linenostep = get_int_opt(options,'linenostep',1) self.linenowidth = get_int_opt(options,'linenowidth', 3*self.ystep) self._stylecache = {} def format_unencoded(self, tokensource, outfile): """ Format ``tokensource``, an iterable of ``(tokentype, tokenstring)`` tuples and write it into ``outfile``. For our implementation we put all lines in their own 'line group'. """ x = self.xoffset y = self.yoffset if not self.nowrap: if self.encoding: outfile.write('<?xml version="1.0" encoding="%s"?>\n' % self.encoding) else: outfile.write('<?xml version="1.0"?>\n') outfile.write('<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.0//EN" ' '"http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/' 'svg10.dtd">\n') outfile.write('<svg xmlns="http://www.w3.org/2000/svg">\n') outfile.write('<g font-family="%s" font-size="%s">\n' % (self.fontfamily, self.fontsize)) counter = self.linenostart counter_step = self.linenostep counter_style = self._get_style(Comment) line_x = x if self.linenos: if counter % counter_step == 0: outfile.write('<text x="%s" y="%s" %s text-anchor="end">%s</text>' % (x+self.linenowidth,y,counter_style,counter)) line_x += self.linenowidth + self.ystep counter += 1 outfile.write('<text x="%s" y="%s" xml:space="preserve">' % (line_x, y)) for ttype, value in tokensource: style = self._get_style(ttype) tspan = style and '<tspan' + style + '>' or '' tspanend = tspan and '</tspan>' or '' value = escape_html(value) if self.spacehack: value = value.expandtabs().replace(' ', ' ') parts = value.split('\n') for part in parts[:-1]: outfile.write(tspan + part + tspanend) y += self.ystep outfile.write('</text>\n') if self.linenos and counter % counter_step == 0: outfile.write('<text x="%s" y="%s" text-anchor="end" %s>%s</text>' % (x+self.linenowidth,y,counter_style,counter)) counter += 1 outfile.write('<text x="%s" y="%s" ' 'xml:space="preserve">' % (line_x,y)) outfile.write(tspan + parts[-1] + tspanend) outfile.write('</text>') if not self.nowrap: outfile.write('</g></svg>\n') def _get_style(self, tokentype): if tokentype in self._stylecache: return self._stylecache[tokentype] otokentype = tokentype while not self.style.styles_token(tokentype): tokentype = tokentype.parent value = self.style.style_for_token(tokentype) result = '' if value['color']: result = ' fill="#' + value['color'] + '"' if value['bold']: result += ' font-weight="bold"' if value['italic']: result += ' font-style="italic"' self._stylecache[otokentype] = result return result