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# Copyright (C) 2009 Peter Bui <pnutzh4x0r@gmail.com>
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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from pygments import highlight as _highlight_func
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from pygments.lexers import guess_lexer, guess_lexer_for_filename, TextLexer
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from pygments.formatters import HtmlFormatter
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from pygments.util import ClassNotFound
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DEFAULT_PYGMENT_STYLE = 'colorful'
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# Trying to highlight very large files using pygments was killing
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# loggerhead on launchpad.net, because pygments isn't very fast.
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# So we only highlight files if they're 512K or smaller.
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MAX_HIGHLIGHT_SIZE = 512000;
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def highlight(path, text, encoding, style=DEFAULT_PYGMENT_STYLE):
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Returns a list of highlighted (i.e. HTML formatted) strings.
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if len(text) > MAX_HIGHLIGHT_SIZE:
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return map(cgi.escape, bzrlib.osutils.split_lines(text))
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formatter = HtmlFormatter(style=style, nowrap=True, classprefix='pyg-')
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lexer = guess_lexer_for_filename(path, text[:1024], encoding=encoding)
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except (ClassNotFound, ValueError):
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lexer = guess_lexer(text[:1024], encoding=encoding)
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except (ClassNotFound, ValueError):
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lexer = TextLexer(encoding=encoding)
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hl_lines = _highlight_func(text, lexer, formatter)
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hl_lines = bzrlib.osutils.split_lines(hl_lines)