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Diffstat (limited to 'BitTorrent/parseargs.py')
| -rw-r--r-- | BitTorrent/parseargs.py | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/BitTorrent/parseargs.py b/BitTorrent/parseargs.py new file mode 100644 index 0000000..2db0b9a --- /dev/null +++ b/BitTorrent/parseargs.py @@ -0,0 +1,187 @@ +# The contents of this file are subject to the BitTorrent Open Source License +# Version 1.1 (the License). You may not copy or use this file, in either +# source code or executable form, except in compliance with the License. You +# may obtain a copy of the License at http://www.bittorrent.com/license/. +# +# Software distributed under the License is distributed on an AS IS basis, +# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License +# for the specific language governing rights and limitations under the +# License. + +# Written by Bill Bumgarner and Bram Cohen + +from types import * +from cStringIO import StringIO + +from BitTorrent.obsoletepythonsupport import * + +from BitTorrent.defaultargs import MyBool, MYTRUE +from BitTorrent import BTFailure +from BitTorrent.bencode import bdecode +from BitTorrent.platform import is_frozen_exe +from BitTorrent.RawServer_magic import switch_rawserver + +def makeHelp(uiname, defaults): + ret = '' + ret += (_("Usage: %s ") % uiname) + if uiname.startswith('launchmany'): + ret += _("[OPTIONS] [TORRENTDIRECTORY]\n\n") + ret += _("If a non-option argument is present it's taken as the value\n" + "of the torrent_dir option.\n") + elif uiname == 'bittorrent': + ret += _("[OPTIONS] [TORRENTFILES]\n") + elif uiname.startswith('bittorrent'): + ret += _("[OPTIONS] [TORRENTFILE]\n") + elif uiname.startswith('maketorrent'): + ret += _("[OPTION] TRACKER_URL FILE [FILE]\n") + ret += '\n' + ret += _("arguments are -\n") + formatDefinitions(defaults, 80) + return ret + +def printHelp(uiname, defaults): + if uiname in ('bittorrent','maketorrent') and is_frozen_exe: + from BitTorrent.GUI import HelpWindow + HelpWindow(None, makeHelp(uiname, defaults)) + else: + print makeHelp(uiname, defaults) + +def formatDefinitions(options, COLS): + s = StringIO() + indent = " " * 10 + width = COLS - 11 + + if width < 15: + width = COLS - 2 + indent = " " + + for option in options: + (longname, default, doc) = option + if doc == '': + continue + s.write('--' + longname) + is_boolean = type(default) is MyBool + if is_boolean: + s.write(', --no_' + longname) + else: + s.write(' <arg>') + s.write('\n') + if default is not None: + doc += _(" (defaults to ") + repr(default) + ')' + i = 0 + for word in doc.split(): + if i == 0: + s.write(indent + word) + i = len(word) + elif i + len(word) >= width: + s.write('\n' + indent + word) + i = len(word) + else: + s.write(' ' + word) + i += len(word) + 1 + s.write('\n\n') + return s.getvalue() + +def usage(str): + raise BTFailure(str) + +def format_key(key): + if len(key) == 1: + return '-%s'%key + else: + return '--%s'%key + +def parseargs(argv, options, minargs=None, maxargs=None, presets=None): + config = {} + for option in options: + longname, default, doc = option + config[longname] = default + args = [] + pos = 0 + if presets is None: + presets = {} + else: + presets = presets.copy() + while pos < len(argv): + if argv[pos][:1] != '-': # not a cmdline option + args.append(argv[pos]) + pos += 1 + else: + key, value = None, None + if argv[pos].startswith('--'): # --aaa 1 + if argv[pos].startswith('--no_'): + key = argv[pos][5:] + boolval = False + else: + key = argv[pos][2:] + boolval = True + if key not in config: + raise BTFailure(_("unknown key ") + format_key(key)) + if type(config[key]) is MyBool: # boolean cmd line switch, no value + value = boolval + pos += 1 + else: # --argument value + if pos == len(argv) - 1: + usage(_("parameter passed in at end with no value")) + key, value = argv[pos][2:], argv[pos+1] + pos += 2 + elif argv[pos][:1] == '-': + key = argv[pos][1:2] + if len(argv[pos]) > 2: # -a1 + value = argv[pos][2:] + pos += 1 + else: # -a 1 + if pos == len(argv) - 1: + usage(_("parameter passed in at end with no value")) + value = argv[pos+1] + pos += 2 + else: + raise BTFailure(_("command line parsing failed at ")+argv[pos]) + + presets[key] = value + parse_options(config, presets) + config.update(presets) + for key, value in config.items(): + if value is None: + usage(_("Option %s is required.") % format_key(key)) + if minargs is not None and len(args) < minargs: + usage(_("Must supply at least %d arguments.") % minargs) + if maxargs is not None and len(args) > maxargs: + usage(_("Too many arguments - %d maximum.") % maxargs) + + if config.has_key('twisted'): + if config['twisted'] == 0: + switch_rawserver('untwisted') + elif config['twisted'] == 1: + switch_rawserver('twisted') + + return (config, args) + +def parse_options(defaults, newvalues): + for key, value in newvalues.iteritems(): + if not defaults.has_key(key): + raise BTFailure(_("unknown key ") + format_key(key)) + try: + t = type(defaults[key]) + if t is MyBool: + if value in ('True', '1', MYTRUE, True): + value = True + else: + value = False + newvalues[key] = value + elif t in (StringType, NoneType): + newvalues[key] = value + elif t in (IntType, LongType): + if value == 'False': + newvalues[key] == 0 + elif value == 'True': + newvalues[key] == 1 + else: + newvalues[key] = int(value) + elif t is FloatType: + newvalues[key] = float(value) + else: + raise TypeError, str(t) + + except ValueError, e: + raise BTFailure(_("wrong format of %s - %s") % (format_key(key), str(e))) + |