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"""
COMMAND-LINE SPECIFIC STUFF
=============================================================================
"""
import sys
import optparse
import codecs
import warnings
import markdown
try:
import yaml
except ImportError: # pragma: no cover
import json as yaml
import logging
from logging import DEBUG, WARNING, CRITICAL
logger = logging.getLogger('MARKDOWN')
def parse_options(args=None, values=None):
"""
Define and parse `optparse` options for command-line usage.
"""
usage = """%prog [options] [INPUTFILE]
(STDIN is assumed if no INPUTFILE is given)"""
desc = "A Python implementation of John Gruber's Markdown. " \
"https://pythonhosted.org/Markdown/"
ver = "%%prog %s" % markdown.version
parser = optparse.OptionParser(usage=usage, description=desc, version=ver)
parser.add_option("-f", "--file", dest="filename", default=None,
help="Write output to OUTPUT_FILE. Defaults to STDOUT.",
metavar="OUTPUT_FILE")
parser.add_option("-e", "--encoding", dest="encoding",
help="Encoding for input and output files.",)
parser.add_option("-s", "--safe", dest="safe", default=False,
metavar="SAFE_MODE",
help="Deprecated! 'replace', 'remove' or 'escape' HTML "
"tags in input")
parser.add_option("-o", "--output_format", dest="output_format",
default='xhtml1', metavar="OUTPUT_FORMAT",
help="'xhtml1' (default), 'html4' or 'html5'.")
parser.add_option("-n", "--no_lazy_ol", dest="lazy_ol",
action='store_false', default=True,
help="Observe number of first item of ordered lists.")
parser.add_option("-x", "--extension", action="append", dest="extensions",
help="Load extension EXTENSION.", metavar="EXTENSION")
parser.add_option("-c", "--extension_configs",
dest="configfile", default=None,
help="Read extension configurations from CONFIG_FILE. "
"CONFIG_FILE must be of JSON or YAML format. YAML"
"format requires that a python YAML library be "
"installed. The parsed JSON or YAML must result in a "
"python dictionary which would be accepted by the "
"'extension_configs' keyword on the markdown.Markdown "
"class. The extensions must also be loaded with the "
"`--extension` option.",
metavar="CONFIG_FILE")
parser.add_option("-q", "--quiet", default=CRITICAL,
action="store_const", const=CRITICAL+10, dest="verbose",
help="Suppress all warnings.")
parser.add_option("-v", "--verbose",
action="store_const", const=WARNING, dest="verbose",
help="Print all warnings.")
parser.add_option("--noisy",
action="store_const", const=DEBUG, dest="verbose",
help="Print debug messages.")
(options, args) = parser.parse_args(args, values)
if len(args) == 0:
input_file = None
else:
input_file = args[0]
if not options.extensions:
options.extensions = []
extension_configs = {}
if options.configfile:
with codecs.open(
options.configfile, mode="r", encoding=options.encoding
) as fp:
try:
extension_configs = yaml.load(fp)
except Exception as e:
message = "Failed parsing extension config file: %s" % \
options.configfile
e.args = (message,) + e.args[1:]
raise
opts = {
'input': input_file,
'output': options.filename,
'extensions': options.extensions,
'extension_configs': extension_configs,
'encoding': options.encoding,
'output_format': options.output_format,
'lazy_ol': options.lazy_ol
}
if options.safe:
# Avoid deprecation warning if user didn't set option
opts['safe_mode'] = options.safe
return opts, options.verbose
def run(): # pragma: no cover
"""Run Markdown from the command line."""
# Parse options and adjust logging level if necessary
options, logging_level = parse_options()
if not options:
sys.exit(2)
logger.setLevel(logging_level)
console_handler = logging.StreamHandler()
logger.addHandler(console_handler)
if logging_level <= WARNING:
# Ensure deprecation warnings get displayed
warnings.filterwarnings('default')
logging.captureWarnings(True)
warn_logger = logging.getLogger('py.warnings')
warn_logger.addHandler(console_handler)
# Run
markdown.markdownFromFile(**options)
if __name__ == '__main__': # pragma: no cover
# Support running module as a commandline command.
# Python 2.7 & 3.x do: `python -m markdown [options] [args]`.
run()
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