mirror of https://github.com/cheat/cheat.git
63 lines
1.6 KiB
Python
63 lines
1.6 KiB
Python
from __future__ import print_function
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import os
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import sys
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import subprocess
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def colorize(sheet_content):
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""" Colorizes cheatsheet content if so configured """
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# only colorize if so configured
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if not 'CHEATCOLORS' in os.environ:
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return sheet_content
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try:
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from pygments import highlight
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from pygments.lexers import BashLexer
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from pygments.formatters import TerminalFormatter
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# if pygments can't load, just return the uncolorized text
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except ImportError:
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return sheet_content
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return highlight(sheet_content, BashLexer(), TerminalFormatter())
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def die(message):
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""" Prints a message to stderr and then terminates """
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warn(message)
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exit(1)
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def editor():
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""" Determines the user's preferred editor """
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# determine which editor to use
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editor = os.environ.get('CHEAT_EDITOR') \
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or os.environ.get('VISUAL') \
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or os.environ.get('EDITOR') \
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or False
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# assert that the editor is set
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if editor == False:
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die(
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'You must set a CHEAT_EDITOR, VISUAL, or EDITOR environment '
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'variable in order to create/edit a cheatsheet.'
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)
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return editor
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def open_with_editor(filepath):
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""" Open `filepath` using the EDITOR specified by the environment variables """
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editor_cmd = editor().split()
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try:
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subprocess.call(editor_cmd + [filepath])
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except OSError:
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die('Could not launch ' + editor())
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def warn(message):
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""" Prints a message to stderr """
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print((message), file=sys.stderr)
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