shaka-packager/tools/json_schema_compiler/highlighters/pygments_highlighter.py

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# Copyright (c) 2012 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
import sys
try:
import pygments
from pygments.lexers import CppLexer
from pygments.formatters import HtmlFormatter
PYGMENTS_IMPORTED = True
except ImportError:
print('It appears that Pygments is not installed. '
'Can be installed using easy_install Pygments or from http://pygments.org.')
PYGMENTS_IMPORTED = False
class PygmentsHighlighter(object):
def __init__(self):
if not PYGMENTS_IMPORTED:
raise ImportError('Pygments not installed')
"""Highlighter that uses the python pygments library to highlight code.
"""
def GetCSS(self, style):
formatter = HtmlFormatter(linenos=True,
style=pygments.styles.get_style_by_name(style))
return formatter.get_style_defs('.highlight')
def GetCodeElement(self, code, style):
formatter = HtmlFormatter(linenos=True,
style=pygments.styles.get_style_by_name(style))
return pygments.highlight(code, CppLexer(), formatter)
def DisplayName(self):
return 'pygments' + ('' if PYGMENTS_IMPORTED else ' (not installed)')
def GetStyles(self):
return list(pygments.styles.get_all_styles())