# -*- coding: utf-8 -*-
from __future__ import print_function, division, absolute_import, unicode_literals
import sys
[docs]def highlight_code(text, lexer_name='python', **kwargs):
r"""
Highlights a block of text using ansii tags based on language syntax.
Args:
text (str): plain text to highlight
lexer_name (str): name of language
**kwargs: passed to pygments.lexers.get_lexer_by_name
Returns:
str: text : highlighted text
If pygments is not installed, the plain text is returned.
CommandLine:
python -c "import pygments.formatters; print(list(pygments.formatters.get_all_formatters()))"
Example:
>>> import ubelt as ub
>>> text = 'import ubelt as ub; print(ub)'
>>> new_text = ub.highlight_code(text)
>>> print(new_text)
"""
# Resolve extensions to languages
lexer_name = {
'py': 'python',
'h': 'cpp',
'cpp': 'cpp',
'cxx': 'cpp',
'c': 'cpp',
}.get(lexer_name.replace('.', ''), lexer_name)
try:
import pygments
import pygments.lexers
import pygments.formatters
import pygments.formatters.terminal
if sys.platform.startswith('win32'): # nocover
# Hack on win32 to support colored output
import colorama
colorama.init()
formater = pygments.formatters.terminal.TerminalFormatter(bg='dark')
lexer = pygments.lexers.get_lexer_by_name(lexer_name, **kwargs)
new_text = pygments.highlight(text, lexer, formater)
except ImportError: # nocover
import warnings
warnings.warn('pygments is not installed')
new_text = text
return new_text
[docs]def color_text(text, color):
r"""
Colorizes text a single color using ansii tags.
Args:
text (str): text to colorize
color (str): may be one of the following: yellow, blink, lightgray,
underline, darkyellow, blue, darkblue, faint, fuchsia, black,
white, red, brown, turquoise, bold, darkred, darkgreen, reset,
standout, darkteal, darkgray, overline, purple, green, teal, fuscia
Returns:
str: text : colorized text.
If pygments is not installed plain text is returned.
CommandLine:
python -c "import pygments.console; print(sorted(pygments.console.codes.keys()))"
python -m ubelt.util_colors color_text
Example:
>>> from ubelt.util_colors import * # NOQA
>>> text = 'raw text'
>>> assert color_text(text, 'red') == '\x1b[31;01mraw text\x1b[39;49;00m'
>>> assert color_text(text, None) == 'raw text'
"""
if color is None:
return text
try:
import pygments
import pygments.console
if sys.platform.startswith('win32'): # nocover
# Hack on win32 to support colored output
import colorama
colorama.init()
ansi_text = pygments.console.colorize(color, text)
return ansi_text
except ImportError: # nocover
import warnings
warnings.warn('pygments is not installed')
return text
if __name__ == '__main__':
r"""
CommandLine:
python -m ubelt.util_colors all
"""
import ubelt as ub # NOQ
xdoc.doctest_module()