| 1 | #!/usr/bin/env python2
|
| 2 | """
|
| 3 | pure_osh.py - Builtins that don't do any I/O.
|
| 4 |
|
| 5 | If the OSH interpreter were embedded in another program, these builtins can be
|
| 6 | safely used, e.g. without worrying about modifying the file system.
|
| 7 |
|
| 8 | NOTE: There can be spew on stdout, e.g. for shopt -p and so forth.
|
| 9 | """
|
| 10 | from __future__ import print_function
|
| 11 |
|
| 12 | from _devbuild.gen import arg_types
|
| 13 | from _devbuild.gen.syntax_asdl import loc
|
| 14 | from _devbuild.gen.types_asdl import opt_group_i
|
| 15 |
|
| 16 | from core import error
|
| 17 | from core.error import e_usage
|
| 18 | from core import state
|
| 19 | from display import ui
|
| 20 | from core import vm
|
| 21 | from data_lang import j8_lite
|
| 22 | from frontend import args
|
| 23 | from frontend import consts
|
| 24 | from frontend import flag_util
|
| 25 | from frontend import match
|
| 26 | from frontend import typed_args
|
| 27 | from mycpp import mylib
|
| 28 | from mycpp.mylib import print_stderr, log
|
| 29 |
|
| 30 | from typing import List, Dict, Tuple, Optional, TYPE_CHECKING
|
| 31 | if TYPE_CHECKING:
|
| 32 | from _devbuild.gen.runtime_asdl import cmd_value
|
| 33 | from core import optview
|
| 34 | from core.state import MutableOpts, Mem, SearchPath
|
| 35 | from osh.cmd_eval import CommandEvaluator
|
| 36 |
|
| 37 | _ = log
|
| 38 |
|
| 39 |
|
| 40 | class Boolean(vm._Builtin):
|
| 41 | """For :, true, false."""
|
| 42 |
|
| 43 | def __init__(self, status):
|
| 44 | # type: (int) -> None
|
| 45 | self.status = status
|
| 46 |
|
| 47 | def Run(self, cmd_val):
|
| 48 | # type: (cmd_value.Argv) -> int
|
| 49 |
|
| 50 | # These ignore regular args, but shouldn't accept typed args.
|
| 51 | typed_args.DoesNotAccept(cmd_val.proc_args)
|
| 52 | return self.status
|
| 53 |
|
| 54 |
|
| 55 | class Alias(vm._Builtin):
|
| 56 |
|
| 57 | def __init__(self, aliases, errfmt):
|
| 58 | # type: (Dict[str, str], ui.ErrorFormatter) -> None
|
| 59 | self.aliases = aliases
|
| 60 | self.errfmt = errfmt
|
| 61 |
|
| 62 | def Run(self, cmd_val):
|
| 63 | # type: (cmd_value.Argv) -> int
|
| 64 | _, arg_r = flag_util.ParseCmdVal('alias', cmd_val)
|
| 65 | argv = arg_r.Rest()
|
| 66 |
|
| 67 | if len(argv) == 0:
|
| 68 | for name in sorted(self.aliases):
|
| 69 | alias_exp = self.aliases[name]
|
| 70 | # This is somewhat like bash, except we use %r for ''.
|
| 71 | print('alias %s=%r' % (name, alias_exp))
|
| 72 | return 0
|
| 73 |
|
| 74 | status = 0
|
| 75 | for i, arg in enumerate(argv):
|
| 76 | name, alias_exp = mylib.split_once(arg, '=')
|
| 77 | if alias_exp is None: # if we get a plain word without, print alias
|
| 78 | alias_exp = self.aliases.get(name)
|
| 79 | if alias_exp is None:
|
| 80 | self.errfmt.Print_('No alias named %r' % name,
|
| 81 | blame_loc=cmd_val.arg_locs[i])
|
| 82 | status = 1
|
| 83 | else:
|
| 84 | print('alias %s=%r' % (name, alias_exp))
|
| 85 | else:
|
| 86 | self.aliases[name] = alias_exp
|
| 87 |
|
| 88 | #print(argv)
|
| 89 | #log('AFTER ALIAS %s', aliases)
|
| 90 | return status
|
| 91 |
|
| 92 |
|
| 93 | class UnAlias(vm._Builtin):
|
| 94 |
|
| 95 | def __init__(self, aliases, errfmt):
|
| 96 | # type: (Dict[str, str], ui.ErrorFormatter) -> None
|
| 97 | self.aliases = aliases
|
| 98 | self.errfmt = errfmt
|
| 99 |
|
| 100 | def Run(self, cmd_val):
|
| 101 | # type: (cmd_value.Argv) -> int
|
| 102 | attrs, arg_r = flag_util.ParseCmdVal('unalias', cmd_val)
|
| 103 | arg = arg_types.unalias(attrs.attrs)
|
| 104 |
|
| 105 | if arg.a:
|
| 106 | self.aliases.clear()
|
| 107 | return 0
|
| 108 |
|
| 109 | argv = arg_r.Rest()
|
| 110 |
|
| 111 | if len(argv) == 0:
|
| 112 | e_usage('requires an argument', loc.Missing)
|
| 113 |
|
| 114 | status = 0
|
| 115 | for i, name in enumerate(argv):
|
| 116 | if name in self.aliases:
|
| 117 | mylib.dict_erase(self.aliases, name)
|
| 118 | else:
|
| 119 | self.errfmt.Print_('No alias named %r' % name,
|
| 120 | blame_loc=cmd_val.arg_locs[i])
|
| 121 | status = 1
|
| 122 | return status
|
| 123 |
|
| 124 |
|
| 125 | def SetOptionsFromFlags(exec_opts, opt_changes, shopt_changes):
|
| 126 | # type: (MutableOpts, List[Tuple[str, bool]], List[Tuple[str, bool]]) -> None
|
| 127 | """Used by core/shell.py."""
|
| 128 |
|
| 129 | # We can set ANY option with -o. -O is too annoying to type.
|
| 130 | for opt_name, b in opt_changes:
|
| 131 | exec_opts.SetAnyOption(opt_name, b)
|
| 132 |
|
| 133 | for opt_name, b in shopt_changes:
|
| 134 | exec_opts.SetAnyOption(opt_name, b)
|
| 135 |
|
| 136 |
|
| 137 | def ShowOptions(mutable_opts, opt_names):
|
| 138 | # type: (state.MutableOpts, List[str]) -> bool
|
| 139 | """Show traditional options, for 'set -o' and 'shopt -p -o'."""
|
| 140 | # TODO: Maybe sort them differently?
|
| 141 |
|
| 142 | if len(opt_names) == 0: # if none, supplied, show all
|
| 143 | opt_names = [consts.OptionName(i) for i in consts.SET_OPTION_NUMS]
|
| 144 |
|
| 145 | any_false = False
|
| 146 | for opt_name in opt_names:
|
| 147 | opt_num = state._SetOptionNum(opt_name)
|
| 148 | b = mutable_opts.Get(opt_num)
|
| 149 | if not b:
|
| 150 | any_false = True
|
| 151 | print('set %so %s' % ('-' if b else '+', opt_name))
|
| 152 | return any_false
|
| 153 |
|
| 154 |
|
| 155 | def _ShowShoptOptions(mutable_opts, opt_nums):
|
| 156 | # type: (state.MutableOpts, List[int]) -> bool
|
| 157 | """For 'shopt -p'."""
|
| 158 |
|
| 159 | if len(opt_nums) == 0:
|
| 160 | # If none supplied, show all
|
| 161 | # Note: the way to show BOTH shopt and set options should be a
|
| 162 | # __shopt__ Dict
|
| 163 | opt_nums.extend(consts.VISIBLE_SHOPT_NUMS)
|
| 164 |
|
| 165 | any_false = False
|
| 166 | for opt_num in opt_nums:
|
| 167 | b = mutable_opts.Get(opt_num)
|
| 168 | if not b:
|
| 169 | any_false = True
|
| 170 | print('shopt -%s %s' % ('s' if b else 'u', consts.OptionName(opt_num)))
|
| 171 | return any_false
|
| 172 |
|
| 173 |
|
| 174 | class Set(vm._Builtin):
|
| 175 |
|
| 176 | def __init__(self, exec_opts, mem):
|
| 177 | # type: (MutableOpts, Mem) -> None
|
| 178 | self.exec_opts = exec_opts
|
| 179 | self.mem = mem
|
| 180 |
|
| 181 | def Run(self, cmd_val):
|
| 182 | # type: (cmd_value.Argv) -> int
|
| 183 |
|
| 184 | # TODO:
|
| 185 | # - How to integrate this with auto-completion? Have to handle '+'.
|
| 186 |
|
| 187 | if len(cmd_val.argv) == 1:
|
| 188 | # 'set' without args shows visible variable names and values. According
|
| 189 | # to POSIX:
|
| 190 | # - the names should be sorted, and
|
| 191 | # - the code should be suitable for re-input to the shell. We have a
|
| 192 | # spec test for this.
|
| 193 | # Also:
|
| 194 | # - autoconf also wants them to fit on ONE LINE.
|
| 195 | # http://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#set
|
| 196 | mapping = self.mem.GetAllVars()
|
| 197 | for name in sorted(mapping):
|
| 198 | str_val = mapping[name]
|
| 199 | code_str = '%s=%s' % (name, j8_lite.MaybeShellEncode(str_val))
|
| 200 | print(code_str)
|
| 201 | return 0
|
| 202 |
|
| 203 | arg_r = args.Reader(cmd_val.argv, locs=cmd_val.arg_locs)
|
| 204 | arg_r.Next() # skip 'set'
|
| 205 | arg = flag_util.ParseMore('set', arg_r)
|
| 206 |
|
| 207 | # 'set -o' shows options. This is actually used by autoconf-generated
|
| 208 | # scripts!
|
| 209 | if arg.show_options:
|
| 210 | ShowOptions(self.exec_opts, [])
|
| 211 | return 0
|
| 212 |
|
| 213 | # Note: set -o nullglob is not valid. The 'shopt' builtin is preferred in
|
| 214 | # YSH, and we want code to be consistent.
|
| 215 | for opt_name, b in arg.opt_changes:
|
| 216 | self.exec_opts.SetOldOption(opt_name, b)
|
| 217 |
|
| 218 | for opt_name, b in arg.shopt_changes:
|
| 219 | self.exec_opts.SetAnyOption(opt_name, b)
|
| 220 |
|
| 221 | # Hm do we need saw_double_dash?
|
| 222 | if arg.saw_double_dash or not arg_r.AtEnd():
|
| 223 | self.mem.SetArgv(arg_r.Rest())
|
| 224 | return 0
|
| 225 |
|
| 226 |
|
| 227 | class Shopt(vm._Builtin):
|
| 228 |
|
| 229 | def __init__(self, exec_opts, mutable_opts, cmd_ev, mem, environ):
|
| 230 | # type: (optview.Exec, MutableOpts, CommandEvaluator, state.Mem, Dict[str, str]) -> None
|
| 231 | self.exec_opts = exec_opts
|
| 232 | self.mutable_opts = mutable_opts
|
| 233 | self.cmd_ev = cmd_ev
|
| 234 | self.mem = mem
|
| 235 | self.environ = environ
|
| 236 |
|
| 237 | def _PrintOptions(self, use_set_opts, opt_names):
|
| 238 | # type: (bool, List[str]) -> int
|
| 239 | if use_set_opts:
|
| 240 | any_false = ShowOptions(self.mutable_opts, opt_names)
|
| 241 |
|
| 242 | if len(opt_names):
|
| 243 | # bash behavior: behave like -q if options are set
|
| 244 | return 1 if any_false else 0
|
| 245 | else:
|
| 246 | return 0
|
| 247 | else:
|
| 248 | # Respect option groups like ysh:upgrade
|
| 249 | any_single_names = False
|
| 250 | opt_nums = [] # type: List[int]
|
| 251 | for opt_name in opt_names:
|
| 252 | opt_group = consts.OptionGroupNum(opt_name)
|
| 253 | if opt_group == opt_group_i.YshUpgrade:
|
| 254 | opt_nums.extend(consts.YSH_UPGRADE)
|
| 255 | elif opt_group == opt_group_i.YshAll:
|
| 256 | opt_nums.extend(consts.YSH_ALL)
|
| 257 | elif opt_group == opt_group_i.StrictAll:
|
| 258 | opt_nums.extend(consts.STRICT_ALL)
|
| 259 |
|
| 260 | else:
|
| 261 | index = consts.OptionNum(opt_name)
|
| 262 | # Minor incompatibility with bash: we validate everything
|
| 263 | # before printing.
|
| 264 | if index == 0:
|
| 265 | if self.exec_opts.ignore_shopt_not_impl():
|
| 266 | index = consts.UnimplOptionNum(opt_name)
|
| 267 | if index == 0:
|
| 268 | e_usage('got invalid option %r' % opt_name,
|
| 269 | loc.Missing)
|
| 270 | opt_nums.append(index)
|
| 271 | any_single_names = True
|
| 272 |
|
| 273 | any_false = _ShowShoptOptions(self.mutable_opts, opt_nums)
|
| 274 |
|
| 275 | if any_single_names:
|
| 276 | # bash behavior: behave like -q if options are set
|
| 277 | return 1 if any_false else 0
|
| 278 | else:
|
| 279 | return 0
|
| 280 |
|
| 281 | def Run(self, cmd_val):
|
| 282 | # type: (cmd_value.Argv) -> int
|
| 283 | attrs, arg_r = flag_util.ParseCmdVal('shopt',
|
| 284 | cmd_val,
|
| 285 | accept_typed_args=True)
|
| 286 |
|
| 287 | arg = arg_types.shopt(attrs.attrs)
|
| 288 | opt_names = arg_r.Rest()
|
| 289 |
|
| 290 | if arg.q: # query values
|
| 291 | for name in opt_names:
|
| 292 | index = consts.OptionNum(name)
|
| 293 | if index == 0:
|
| 294 | if self.exec_opts.ignore_shopt_not_impl():
|
| 295 | index = consts.UnimplOptionNum(name)
|
| 296 | if index == 0:
|
| 297 | return 2 # bash gives 1 for invalid option; 2 is better
|
| 298 |
|
| 299 | if not self.mutable_opts.opt0_array[index]:
|
| 300 | return 1 # at least one option is not true
|
| 301 |
|
| 302 | return 0 # all options are true
|
| 303 |
|
| 304 | if arg.s:
|
| 305 | b = True
|
| 306 | elif arg.u:
|
| 307 | b = False
|
| 308 | elif arg.p: # explicit -p
|
| 309 | return self._PrintOptions(arg.o, opt_names)
|
| 310 | else: # otherwise -p is implicit
|
| 311 | return self._PrintOptions(arg.o, opt_names)
|
| 312 |
|
| 313 | # shopt --set x { my-block }
|
| 314 | cmd_frag = typed_args.OptionalBlockAsFrag(cmd_val)
|
| 315 | if cmd_frag:
|
| 316 | opt_nums = [] # type: List[int]
|
| 317 | for opt_name in opt_names:
|
| 318 | # TODO: could consolidate with checks in core/state.py and option
|
| 319 | # lexer?
|
| 320 | opt_group = consts.OptionGroupNum(opt_name)
|
| 321 | if opt_group == opt_group_i.YshUpgrade:
|
| 322 | opt_nums.extend(consts.YSH_UPGRADE)
|
| 323 | if b:
|
| 324 | self.mem.MaybeInitEnvDict(self.environ)
|
| 325 | continue
|
| 326 |
|
| 327 | if opt_group == opt_group_i.YshAll:
|
| 328 | opt_nums.extend(consts.YSH_ALL)
|
| 329 | if b:
|
| 330 | self.mem.MaybeInitEnvDict(self.environ)
|
| 331 | continue
|
| 332 |
|
| 333 | if opt_group == opt_group_i.StrictAll:
|
| 334 | opt_nums.extend(consts.STRICT_ALL)
|
| 335 | continue
|
| 336 |
|
| 337 | index = consts.OptionNum(opt_name)
|
| 338 | if index == 0:
|
| 339 | if self.exec_opts.ignore_shopt_not_impl():
|
| 340 | index = consts.UnimplOptionNum(opt_name)
|
| 341 | if index == 0:
|
| 342 | # TODO: location info
|
| 343 | e_usage('got invalid option %r' % opt_name,
|
| 344 | loc.Missing)
|
| 345 | opt_nums.append(index)
|
| 346 |
|
| 347 | with state.ctx_Option(self.mutable_opts, opt_nums, b):
|
| 348 | unused = self.cmd_ev.EvalCommandFrag(cmd_frag)
|
| 349 | return 0 # cd also returns 0
|
| 350 |
|
| 351 | # Otherwise, set options.
|
| 352 | ignore_shopt_not_impl = self.exec_opts.ignore_shopt_not_impl()
|
| 353 | for opt_name in opt_names:
|
| 354 | # We allow set -o options here
|
| 355 | self.mutable_opts.SetAnyOption(opt_name, b, ignore_shopt_not_impl)
|
| 356 |
|
| 357 | return 0
|
| 358 |
|
| 359 |
|
| 360 | class Hash(vm._Builtin):
|
| 361 |
|
| 362 | def __init__(self, search_path):
|
| 363 | # type: (SearchPath) -> None
|
| 364 | self.search_path = search_path
|
| 365 |
|
| 366 | def Run(self, cmd_val):
|
| 367 | # type: (cmd_value.Argv) -> int
|
| 368 | attrs, arg_r = flag_util.ParseCmdVal('hash', cmd_val)
|
| 369 | arg = arg_types.hash(attrs.attrs)
|
| 370 |
|
| 371 | rest = arg_r.Rest()
|
| 372 | if arg.r:
|
| 373 | if len(rest):
|
| 374 | e_usage('got extra arguments after -r', loc.Missing)
|
| 375 | self.search_path.ClearCache()
|
| 376 | return 0
|
| 377 |
|
| 378 | status = 0
|
| 379 | if len(rest):
|
| 380 | for cmd in rest: # enter in cache
|
| 381 | full_path = self.search_path.CachedLookup(cmd)
|
| 382 | if full_path is None:
|
| 383 | print_stderr('hash: %r not found' % cmd)
|
| 384 | status = 1
|
| 385 | else: # print cache
|
| 386 | commands = self.search_path.CachedCommands()
|
| 387 | commands.sort()
|
| 388 | for cmd in commands:
|
| 389 | print(cmd)
|
| 390 |
|
| 391 | return status
|
| 392 |
|
| 393 |
|
| 394 | def _ParseOptSpec(spec_str):
|
| 395 | # type: (str) -> Dict[str, bool]
|
| 396 | spec = {} # type: Dict[str, bool]
|
| 397 | i = 0
|
| 398 | n = len(spec_str)
|
| 399 | while True:
|
| 400 | if i >= n:
|
| 401 | break
|
| 402 | ch = spec_str[i]
|
| 403 | spec[ch] = False
|
| 404 | i += 1
|
| 405 | if i >= n:
|
| 406 | break
|
| 407 | # If the next character is :, change the value to True.
|
| 408 | if spec_str[i] == ':':
|
| 409 | spec[ch] = True
|
| 410 | i += 1
|
| 411 | return spec
|
| 412 |
|
| 413 |
|
| 414 | class GetOptsState(object):
|
| 415 | """State persisted across invocations.
|
| 416 |
|
| 417 | This would be simpler in GetOpts.
|
| 418 | """
|
| 419 |
|
| 420 | def __init__(self, mem, errfmt):
|
| 421 | # type: (Mem, ui.ErrorFormatter) -> None
|
| 422 | self.mem = mem
|
| 423 | self.errfmt = errfmt
|
| 424 | self._optind = -1
|
| 425 | self.flag_pos = 1 # position within the arg, public var
|
| 426 |
|
| 427 | def _OptInd(self):
|
| 428 | # type: () -> int
|
| 429 | """Returns OPTIND that's >= 1, or -1 if it's invalid."""
|
| 430 | # Note: OPTIND could be value.Int?
|
| 431 | try:
|
| 432 | result = state.GetInteger(self.mem, 'OPTIND')
|
| 433 | except error.Runtime as e:
|
| 434 | self.errfmt.Print_(e.UserErrorString())
|
| 435 | result = -1
|
| 436 | return result
|
| 437 |
|
| 438 | def GetArg(self, argv):
|
| 439 | # type: (List[str]) -> Optional[str]
|
| 440 | """Get the value of argv at OPTIND.
|
| 441 |
|
| 442 | Returns None if it's out of range.
|
| 443 | """
|
| 444 |
|
| 445 | #log('_optind %d flag_pos %d', self._optind, self.flag_pos)
|
| 446 |
|
| 447 | optind = self._OptInd()
|
| 448 | if optind == -1:
|
| 449 | return None
|
| 450 | self._optind = optind # save for later
|
| 451 |
|
| 452 | i = optind - 1 # 1-based index
|
| 453 | #log('argv %s i %d', argv, i)
|
| 454 | if 0 <= i and i < len(argv):
|
| 455 | return argv[i]
|
| 456 | else:
|
| 457 | return None
|
| 458 |
|
| 459 | def IncIndex(self):
|
| 460 | # type: () -> None
|
| 461 | """Increment OPTIND."""
|
| 462 | # Note: bash-completion uses a *local* OPTIND ! Not global.
|
| 463 | assert self._optind != -1
|
| 464 | state.BuiltinSetString(self.mem, 'OPTIND', str(self._optind + 1))
|
| 465 | self.flag_pos = 1
|
| 466 |
|
| 467 | def SetArg(self, optarg):
|
| 468 | # type: (str) -> None
|
| 469 | """Set OPTARG."""
|
| 470 | state.BuiltinSetString(self.mem, 'OPTARG', optarg)
|
| 471 |
|
| 472 | def Fail(self):
|
| 473 | # type: () -> None
|
| 474 | """On failure, reset OPTARG."""
|
| 475 | state.BuiltinSetString(self.mem, 'OPTARG', '')
|
| 476 |
|
| 477 |
|
| 478 | def _GetOpts(
|
| 479 | spec, # type: Dict[str, bool]
|
| 480 | argv, # type: List[str]
|
| 481 | my_state, # type: GetOptsState
|
| 482 | errfmt, # type: ui.ErrorFormatter
|
| 483 | ):
|
| 484 | # type: (...) -> Tuple[int, str]
|
| 485 | current = my_state.GetArg(argv)
|
| 486 | #log('current %s', current)
|
| 487 |
|
| 488 | if current is None: # out of range, etc.
|
| 489 | my_state.Fail()
|
| 490 | return 1, '?'
|
| 491 |
|
| 492 | if not current.startswith('-') or current == '-':
|
| 493 | my_state.Fail()
|
| 494 | return 1, '?'
|
| 495 |
|
| 496 | flag_char = current[my_state.flag_pos]
|
| 497 |
|
| 498 | if my_state.flag_pos < len(current) - 1:
|
| 499 | my_state.flag_pos += 1 # don't move past this arg yet
|
| 500 | more_chars = True
|
| 501 | else:
|
| 502 | my_state.IncIndex()
|
| 503 | my_state.flag_pos = 1
|
| 504 | more_chars = False
|
| 505 |
|
| 506 | if flag_char not in spec: # Invalid flag
|
| 507 | return 0, '?'
|
| 508 |
|
| 509 | if spec[flag_char]: # does it need an argument?
|
| 510 | if more_chars:
|
| 511 | optarg = current[my_state.flag_pos:]
|
| 512 | else:
|
| 513 | optarg = my_state.GetArg(argv)
|
| 514 | if optarg is None:
|
| 515 | my_state.Fail()
|
| 516 | # TODO: Add location info
|
| 517 | errfmt.Print_('getopts: option %r requires an argument.' %
|
| 518 | current)
|
| 519 | tmp = [j8_lite.MaybeShellEncode(a) for a in argv]
|
| 520 | print_stderr('(getopts argv: %s)' % ' '.join(tmp))
|
| 521 |
|
| 522 | # Hm doesn't cause status 1?
|
| 523 | return 0, '?'
|
| 524 | my_state.IncIndex()
|
| 525 | my_state.SetArg(optarg)
|
| 526 | else:
|
| 527 | my_state.SetArg('')
|
| 528 |
|
| 529 | return 0, flag_char
|
| 530 |
|
| 531 |
|
| 532 | class GetOpts(vm._Builtin):
|
| 533 | """
|
| 534 | Vars used:
|
| 535 | OPTERR: disable printing of error messages
|
| 536 | Vars set:
|
| 537 | The variable named by the second arg
|
| 538 | OPTIND - initialized to 1 at startup
|
| 539 | OPTARG - argument
|
| 540 | """
|
| 541 |
|
| 542 | def __init__(self, mem, errfmt):
|
| 543 | # type: (Mem, ui.ErrorFormatter) -> None
|
| 544 | self.mem = mem
|
| 545 | self.errfmt = errfmt
|
| 546 |
|
| 547 | # TODO: state could just be in this object
|
| 548 | self.my_state = GetOptsState(mem, errfmt)
|
| 549 | self.spec_cache = {} # type: Dict[str, Dict[str, bool]]
|
| 550 |
|
| 551 | def Run(self, cmd_val):
|
| 552 | # type: (cmd_value.Argv) -> int
|
| 553 | arg_r = args.Reader(cmd_val.argv, locs=cmd_val.arg_locs)
|
| 554 | arg_r.Next()
|
| 555 |
|
| 556 | # NOTE: If first char is a colon, error reporting is different. Alpine
|
| 557 | # might not use that?
|
| 558 | spec_str = arg_r.ReadRequired('requires an argspec')
|
| 559 |
|
| 560 | var_name, var_loc = arg_r.ReadRequired2(
|
| 561 | 'requires the name of a variable to set')
|
| 562 |
|
| 563 | spec = self.spec_cache.get(spec_str)
|
| 564 | if spec is None:
|
| 565 | spec = _ParseOptSpec(spec_str)
|
| 566 | self.spec_cache[spec_str] = spec
|
| 567 |
|
| 568 | user_argv = self.mem.GetArgv() if arg_r.AtEnd() else arg_r.Rest()
|
| 569 | #log('user_argv %s', user_argv)
|
| 570 | status, flag_char = _GetOpts(spec, user_argv, self.my_state,
|
| 571 | self.errfmt)
|
| 572 |
|
| 573 | if match.IsValidVarName(var_name):
|
| 574 | state.BuiltinSetString(self.mem, var_name, flag_char)
|
| 575 | else:
|
| 576 | # NOTE: The builtin has PARTIALLY set state. This happens in all shells
|
| 577 | # except mksh.
|
| 578 | raise error.Usage('got invalid variable name %r' % var_name,
|
| 579 | var_loc)
|
| 580 | return status
|