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Refactored for argparse, the help output dont remain the same : too much sheets so I thought that do not print cheatlist every time could be a good things. Added description + epilogue (examples) to the standart argparse output.
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roemer_j
parent
98b254b799
commit
526a9f595a
106
cheat
106
cheat
@ -40,7 +40,6 @@ if os.name == 'posix' and 'CHEATCOLORS' in os.environ:
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except ImportError:
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pass
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def cheat_directories():
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"Assembles a list of directories containing cheatsheets."
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default_directories = [DEFAULT_CHEAT_DIR]
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@ -128,8 +127,7 @@ def help(cheatsheets):
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Available keyphrases:
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''').strip())
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print(list_cheatsheets(cheatsheets))
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print list_cheatsheets(cheatsheets)
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def list_cheatsheets(cheatsheets):
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"Lists the cheatsheets that are currently available"
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@ -137,7 +135,6 @@ def list_cheatsheets(cheatsheets):
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return ('\n'.join(sorted(['%s [%s]' % (key.ljust(max_command), value)
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for key, value in cheatsheets.items()])))
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def pretty_print(filename):
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"Applies syntax highlighting to a cheatsheet and writes it to stdout"
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try:
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@ -156,10 +153,7 @@ def pretty_print(filename):
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fmt = TerminalFormatter()
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highlight(code, lexer, fmt, sys.stdout)
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def main():
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# assemble a keyphrase out of all params passed to the script
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keyphrase = ' '.join(sys.argv[1:])
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cheat_dirs = cheat_directories()
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# verify that we have at least one cheat directory
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@ -171,42 +165,86 @@ def main():
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# list the files in the ~/.cheat directory
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cheatsheets = cheat_files(cheat_dirs)
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# @TODO: refactor the below into argparse
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# print help
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if keyphrase in ['', 'cheat', 'help', '-h', '-help', '--help']:
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help(cheatsheets)
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exit()
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# list cheat directories and exit
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if keyphrase in ['-d', '--cheat-directories']:
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print("\n".join(cheat_directories()))
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exit()
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class ListDirectories(argparse.Action):
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def __call__(self, parser, namespace, values, option_string=None):
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print cheat_directories()
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parser.exit()
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# list cheatsheets and exit
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if keyphrase in ['-l', '--list']:
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print(list_cheatsheets(cheatsheets))
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exit()
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class ListCheatsheets(argparse.Action):
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def __call__(self, parser, namespace, values, option_string=None):
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print list_cheatsheets(cheatsheets)
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parser.exit()
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# if the user wants to edit a cheatsheet
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if (sys.argv[1]) and (sys.argv[1] in ['-e', '--edit']):
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edit_cheatsheet(' '.join(sys.argv[2:]), cheatsheets)
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exit()
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class EditSheet(argparse.Action):
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def __call__(self, parser, namespace, values, option_string=None):
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edit_cheatsheet(values[0], cheatsheets)
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parser.exit()
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# print the cheatsheet if it exists
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if keyphrase in cheatsheets:
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filename = os.path.join(cheatsheets[keyphrase], keyphrase)
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if USE_PYGMENTS:
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pretty_print(filename)
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else:
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with open(filename) as istream:
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for l in istream:
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sys.stdout.write(l)
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class PrintSheet(argparse.Action):
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def __call__(self, parser, namespace, value, option_string=None):
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if not value or value in ['help', 'cheat']:
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parser.print_help()
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elif value in cheatsheets:
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filename = os.path.join(cheatsheets[value], value)
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if USE_PYGMENTS:
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pretty_print(filename)
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else:
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with open(filename) as istream:
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for l in istream:
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sys.stdout.write(l)
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# if it does not, say so
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else:
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print('No cheatsheet found for %s.' % keyphrase)
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# if it does not, say so
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else:
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print >> sys.stderr, ('No cheatsheet found for %s.' % value)
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parser.exit(1)
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parser.exit()
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desc = dedent('''
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cheat allows you to create and view interactive cheatsheets on the
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command-line. It was designed to help remind *nix system
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administrators of options for commands that they use frequently,
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but not frequently enough to remember.''').strip()
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epi = dedent('''
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Examples:
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To look up 'tar':
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cheat tar
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To create or edit the cheatsheet for 'foo':
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cheat -e foo
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To list the directories on the CHEATPATH
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cheat -d
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To list the available cheatsheets:
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cheat -l
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''').strip()
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parser = argparse.ArgumentParser(prog='cheat',
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description=desc, epilog=epi,
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formatter_class=argparse.RawDescriptionHelpFormatter)
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parser_group = parser.add_mutually_exclusive_group()
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parser_group.add_argument('sheet', metavar='cheatsheet',
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action=PrintSheet, type=str, nargs='?',
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help='Look at <cheatseet>')
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parser_group.add_argument('-c', '--create', metavar='cheatsheet',
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action=EditSheet, type=str, nargs=1,
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help='Create <cheatsheet>')
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parser_group.add_argument('-e', '--edit', metavar='cheatsheet',
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action=EditSheet, type=str, nargs=1,
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help='Edit <cheatsheet>')
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parser_group.add_argument('-l', '--list',
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action=ListCheatsheets, nargs=0,
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help='List all available cheatsheets')
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parser_group.add_argument('-d', '--cheat-directories',
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action=ListDirectories, nargs=0,
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help='List all current cheat dirs')
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args = parser.parse_args()
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if __name__ == '__main__':
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main()
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