| 1 | """
|
| 2 | core/shell.py -- Entry point for the shell interpreter.
|
| 3 | """
|
| 4 | from __future__ import print_function
|
| 5 |
|
| 6 | from errno import ENOENT
|
| 7 | import time as time_
|
| 8 |
|
| 9 | from _devbuild.gen import arg_types
|
| 10 | from _devbuild.gen.option_asdl import option_i, builtin_i
|
| 11 | from _devbuild.gen.runtime_asdl import scope_e
|
| 12 | from _devbuild.gen.syntax_asdl import (loc, source, source_t, IntParamBox,
|
| 13 | debug_frame, debug_frame_t)
|
| 14 | from _devbuild.gen.value_asdl import (value, value_e, value_t, Obj)
|
| 15 | from core import alloc
|
| 16 | from core import comp_ui
|
| 17 | from core import dev
|
| 18 | from core import error
|
| 19 | from core import executor
|
| 20 | from core import completion
|
| 21 | from core import main_loop
|
| 22 | from core import optview
|
| 23 | from core import pyos
|
| 24 | from core import process
|
| 25 | from core import pyutil
|
| 26 | from core import state
|
| 27 | from display import ui
|
| 28 | from core import util
|
| 29 | from core import vm
|
| 30 |
|
| 31 | from frontend import args
|
| 32 | from frontend import flag_def # side effect: flags are defined!
|
| 33 |
|
| 34 | unused1 = flag_def
|
| 35 | from frontend import flag_util
|
| 36 | from frontend import location
|
| 37 | from frontend import reader
|
| 38 | from frontend import parse_lib
|
| 39 |
|
| 40 | from builtin import assign_osh
|
| 41 | from builtin import bracket_osh
|
| 42 | from builtin import completion_osh
|
| 43 | from builtin import completion_ysh
|
| 44 | from builtin import dirs_osh
|
| 45 | from builtin import error_ysh
|
| 46 | from builtin import hay_ysh
|
| 47 | from builtin import io_osh
|
| 48 | from builtin import io_ysh
|
| 49 | from builtin import json_ysh
|
| 50 | from builtin import meta_osh
|
| 51 | from builtin import misc_osh
|
| 52 | from builtin import module_ysh
|
| 53 | from builtin import printf_osh
|
| 54 | from builtin import process_osh
|
| 55 | from builtin import pure_osh
|
| 56 | from builtin import pure_ysh
|
| 57 | from builtin import readline_osh
|
| 58 | from builtin import read_osh
|
| 59 | from builtin import trap_osh
|
| 60 |
|
| 61 | from builtin import func_eggex
|
| 62 | from builtin import func_hay
|
| 63 | from builtin import func_misc
|
| 64 |
|
| 65 | from builtin import method_dict
|
| 66 | from builtin import method_io
|
| 67 | from builtin import method_list
|
| 68 | from builtin import method_other
|
| 69 | from builtin import method_str
|
| 70 |
|
| 71 | from osh import cmd_eval
|
| 72 | from osh import glob_
|
| 73 | from osh import history
|
| 74 | from osh import prompt
|
| 75 | from osh import sh_expr_eval
|
| 76 | from osh import split
|
| 77 | from osh import word_eval
|
| 78 |
|
| 79 | from mycpp import mops
|
| 80 | from mycpp import mylib
|
| 81 | from mycpp.mylib import print_stderr, log
|
| 82 | from pylib import os_path
|
| 83 | from tools import deps
|
| 84 | from tools import fmt
|
| 85 | from tools import ysh_ify
|
| 86 | from ysh import expr_eval
|
| 87 |
|
| 88 | unused2 = log
|
| 89 |
|
| 90 | import libc
|
| 91 | import posix_ as posix
|
| 92 |
|
| 93 | from typing import List, Dict, Optional, TYPE_CHECKING, cast
|
| 94 | if TYPE_CHECKING:
|
| 95 | from frontend.py_readline import Readline
|
| 96 |
|
| 97 | if mylib.PYTHON:
|
| 98 | try:
|
| 99 | from _devbuild.gen import help_meta # type: ignore
|
| 100 | except ImportError:
|
| 101 | help_meta = None
|
| 102 |
|
| 103 |
|
| 104 | def _InitDefaultCompletions(cmd_ev, complete_builtin, comp_lookup):
|
| 105 | # type: (cmd_eval.CommandEvaluator, completion_osh.Complete, completion.Lookup) -> None
|
| 106 |
|
| 107 | # register builtins and words
|
| 108 | complete_builtin.Run(cmd_eval.MakeBuiltinArgv(['-E', '-A', 'command']))
|
| 109 | # register path completion
|
| 110 | # Add -o filenames? Or should that be automatic?
|
| 111 | complete_builtin.Run(cmd_eval.MakeBuiltinArgv(['-D', '-A', 'file']))
|
| 112 |
|
| 113 |
|
| 114 | def _CompletionDemo(comp_lookup):
|
| 115 | # type: (completion.Lookup) -> None
|
| 116 |
|
| 117 | # Something for fun, to show off. Also: test that you don't repeatedly hit
|
| 118 | # the file system / network / coprocess.
|
| 119 | A1 = completion.TestAction(['foo.py', 'foo', 'bar.py'], 0.0)
|
| 120 | l = [] # type: List[str]
|
| 121 | for i in xrange(0, 5):
|
| 122 | l.append('m%d' % i)
|
| 123 |
|
| 124 | A2 = completion.TestAction(l, 0.1)
|
| 125 | C1 = completion.UserSpec([A1, A2], [], [], completion.DefaultPredicate(),
|
| 126 | '', '')
|
| 127 | comp_lookup.RegisterName('slowc', {}, C1)
|
| 128 |
|
| 129 |
|
| 130 | def SourceStartupFile(
|
| 131 | fd_state, # type: process.FdState
|
| 132 | rc_path, # type: str
|
| 133 | lang, # type: str
|
| 134 | parse_ctx, # type: parse_lib.ParseContext
|
| 135 | cmd_ev, # type: cmd_eval.CommandEvaluator
|
| 136 | errfmt, # type: ui.ErrorFormatter
|
| 137 | ):
|
| 138 | # type: (...) -> None
|
| 139 |
|
| 140 | # Right now this is called when the shell is interactive. (Maybe it should
|
| 141 | # be called on login_shel too.)
|
| 142 | #
|
| 143 | # Terms:
|
| 144 | # - interactive shell: Roughly speaking, no args or -c, and isatty() is true
|
| 145 | # for stdin and stdout.
|
| 146 | # - login shell: Started from the top level, e.g. from init or ssh.
|
| 147 | #
|
| 148 | # We're not going to copy everything bash does because it's too complex, but
|
| 149 | # for reference:
|
| 150 | # https://www.gnu.org/software/bash/manual/bash.html#Bash-Startup-Files
|
| 151 | # Bash also has --login.
|
| 152 |
|
| 153 | try:
|
| 154 | f = fd_state.Open(rc_path)
|
| 155 | except (IOError, OSError) as e:
|
| 156 | # TODO: Could warn about nonexistent explicit --rcfile?
|
| 157 | if e.errno != ENOENT:
|
| 158 | raise # Goes to top level. Handle this better?
|
| 159 | return
|
| 160 |
|
| 161 | arena = parse_ctx.arena
|
| 162 | rc_line_reader = reader.FileLineReader(f, arena)
|
| 163 | rc_c_parser = parse_ctx.MakeOshParser(rc_line_reader)
|
| 164 |
|
| 165 | with alloc.ctx_SourceCode(arena, source.SourcedFile(rc_path, loc.Missing)):
|
| 166 | # TODO: handle status, e.g. 2 for ParseError
|
| 167 | unused = main_loop.Batch(cmd_ev, rc_c_parser, errfmt)
|
| 168 |
|
| 169 | f.close()
|
| 170 |
|
| 171 |
|
| 172 | class ShellOptHook(state.OptHook):
|
| 173 |
|
| 174 | def __init__(self, readline):
|
| 175 | # type: (Optional[Readline]) -> None
|
| 176 | self.readline = readline
|
| 177 |
|
| 178 | def OnChange(self, opt0_array, opt_name, b):
|
| 179 | # type: (List[bool], str, bool) -> bool
|
| 180 | """This method is called whenever an option is changed.
|
| 181 |
|
| 182 | Returns success or failure.
|
| 183 | """
|
| 184 | if opt_name == 'vi' or opt_name == 'emacs':
|
| 185 | # TODO: Replace with a hook? Just like setting LANG= can have a hook.
|
| 186 | if self.readline:
|
| 187 | self.readline.parse_and_bind("set editing-mode " + opt_name)
|
| 188 | else:
|
| 189 | print_stderr(
|
| 190 | "Warning: Can't set option %r because shell wasn't compiled with GNU readline"
|
| 191 | % opt_name)
|
| 192 | return False
|
| 193 |
|
| 194 | # Invert: they are mutually exclusive!
|
| 195 | if opt_name == 'vi':
|
| 196 | opt0_array[option_i.emacs] = not b
|
| 197 | elif opt_name == 'emacs':
|
| 198 | opt0_array[option_i.vi] = not b
|
| 199 |
|
| 200 | return True
|
| 201 |
|
| 202 |
|
| 203 | def _SetGlobalFunc(mem, name, func):
|
| 204 | # type: (state.Mem, str, vm._Callable) -> None
|
| 205 | assert isinstance(func, vm._Callable), func
|
| 206 |
|
| 207 | # Note: no location info for builtin functions?
|
| 208 | mem.SetNamed(location.LName(name), value.BuiltinFunc(func),
|
| 209 | scope_e.GlobalOnly)
|
| 210 |
|
| 211 |
|
| 212 | def InitAssignmentBuiltins(
|
| 213 | mem, # type: state.Mem
|
| 214 | procs, # type: state.Procs
|
| 215 | exec_opts, # type: optview.Exec
|
| 216 | errfmt, # type: ui.ErrorFormatter
|
| 217 | ):
|
| 218 | # type: (...) -> Dict[int, vm._AssignBuiltin]
|
| 219 |
|
| 220 | assign_b = {} # type: Dict[int, vm._AssignBuiltin]
|
| 221 |
|
| 222 | new_var = assign_osh.NewVar(mem, procs, exec_opts, errfmt)
|
| 223 | assign_b[builtin_i.declare] = new_var
|
| 224 | assign_b[builtin_i.typeset] = new_var
|
| 225 | assign_b[builtin_i.local] = new_var
|
| 226 |
|
| 227 | assign_b[builtin_i.export_] = assign_osh.Export(mem, errfmt)
|
| 228 | assign_b[builtin_i.readonly] = assign_osh.Readonly(mem, errfmt)
|
| 229 |
|
| 230 | return assign_b
|
| 231 |
|
| 232 |
|
| 233 | class ShellFiles(object):
|
| 234 |
|
| 235 | def __init__(self, lang, home_dir, mem, flag):
|
| 236 | # type: (str, str, state.Mem, arg_types.main) -> None
|
| 237 | assert lang in ('osh', 'ysh'), lang
|
| 238 | self.lang = lang
|
| 239 | self.home_dir = home_dir
|
| 240 | self.mem = mem
|
| 241 | self.flag = flag
|
| 242 |
|
| 243 | def _HistVar(self):
|
| 244 | # type: () -> str
|
| 245 | return 'HISTFILE' if self.lang == 'osh' else 'YSH_HISTFILE'
|
| 246 |
|
| 247 | def _DefaultHistoryFile(self):
|
| 248 | # type: () -> str
|
| 249 | return os_path.join(self.home_dir,
|
| 250 | '.local/share/oils/%s_history' % self.lang)
|
| 251 |
|
| 252 | def InitAfterLoadingEnv(self):
|
| 253 | # type: () -> None
|
| 254 |
|
| 255 | hist_var = self._HistVar()
|
| 256 | if self.mem.GetValue(hist_var).tag() == value_e.Undef:
|
| 257 | # Note: if the directory doesn't exist, GNU readline ignores
|
| 258 | state.SetGlobalString(self.mem, hist_var,
|
| 259 | self._DefaultHistoryFile())
|
| 260 |
|
| 261 | def HistoryFile(self):
|
| 262 | # type: () -> Optional[str]
|
| 263 | # TODO: In non-strict mode we should try to cast the HISTFILE value to a
|
| 264 | # string following bash's rules
|
| 265 |
|
| 266 | UP_val = self.mem.GetValue(self._HistVar())
|
| 267 | if UP_val.tag() == value_e.Str:
|
| 268 | val = cast(value.Str, UP_val)
|
| 269 | return val.s
|
| 270 | else:
|
| 271 | # Note: if HISTFILE is an array, bash will return ${HISTFILE[0]}
|
| 272 | return None
|
| 273 | #return self._DefaultHistoryFile()
|
| 274 |
|
| 275 | # TODO: can we recover line information here?
|
| 276 | # might be useful to show where HISTFILE was set
|
| 277 | #raise error.Strict("$HISTFILE should only ever be a string", loc.Missing)
|
| 278 |
|
| 279 |
|
| 280 | def Main(
|
| 281 | lang, # type: str
|
| 282 | arg_r, # type: args.Reader
|
| 283 | environ, # type: Dict[str, str]
|
| 284 | login_shell, # type: bool
|
| 285 | loader, # type: pyutil._ResourceLoader
|
| 286 | readline, # type: Optional[Readline]
|
| 287 | ):
|
| 288 | # type: (...) -> int
|
| 289 | """The full shell lifecycle. Used by bin/osh and bin/ysh.
|
| 290 |
|
| 291 | Args:
|
| 292 | lang: 'osh' or 'ysh'
|
| 293 | login_shell: Was - on argv[0]?
|
| 294 | loader: to get help, version, grammar, etc.
|
| 295 | readline: optional GNU readline
|
| 296 | """
|
| 297 | # Differences between osh and ysh:
|
| 298 | # - oshrc vs yshrc
|
| 299 | # - shopt -s ysh:all
|
| 300 | # - Prompt
|
| 301 | # - --help
|
| 302 |
|
| 303 | argv0 = arg_r.Peek()
|
| 304 | assert argv0 is not None
|
| 305 | arg_r.Next()
|
| 306 |
|
| 307 | assert lang in ('osh', 'ysh'), lang
|
| 308 |
|
| 309 | try:
|
| 310 | attrs = flag_util.ParseMore('main', arg_r)
|
| 311 | except error.Usage as e:
|
| 312 | print_stderr('%s usage error: %s' % (lang, e.msg))
|
| 313 | return 2
|
| 314 | flag = arg_types.main(attrs.attrs)
|
| 315 |
|
| 316 | arena = alloc.Arena()
|
| 317 | errfmt = ui.ErrorFormatter()
|
| 318 |
|
| 319 | if flag.help:
|
| 320 | util.HelpFlag(loader, '%s-usage' % lang, mylib.Stdout())
|
| 321 | return 0
|
| 322 | if flag.version:
|
| 323 | util.VersionFlag(loader, mylib.Stdout())
|
| 324 | return 0
|
| 325 |
|
| 326 | if flag.tool == 'cat-em':
|
| 327 | paths = arg_r.Rest()
|
| 328 |
|
| 329 | status = 0
|
| 330 | for p in paths:
|
| 331 | try:
|
| 332 | contents = loader.Get(p)
|
| 333 | print(contents)
|
| 334 | except (OSError, IOError):
|
| 335 | print_stderr("cat-em: %r not found" % p)
|
| 336 | status = 1
|
| 337 | return status
|
| 338 |
|
| 339 | debug_stack = [] # type: List[debug_frame_t]
|
| 340 | if arg_r.AtEnd():
|
| 341 | dollar0 = argv0
|
| 342 | else:
|
| 343 | dollar0 = arg_r.Peek() # the script name, or the arg after -c
|
| 344 |
|
| 345 | frame0 = debug_frame.Main(dollar0)
|
| 346 | debug_stack.append(frame0)
|
| 347 |
|
| 348 | script_name = arg_r.Peek() # type: Optional[str]
|
| 349 | arg_r.Next()
|
| 350 | mem = state.Mem(dollar0, arg_r.Rest(), arena, debug_stack)
|
| 351 |
|
| 352 | opt_hook = ShellOptHook(readline)
|
| 353 | # Note: only MutableOpts needs mem, so it's not a true circular dep.
|
| 354 | parse_opts, exec_opts, mutable_opts = state.MakeOpts(mem, opt_hook)
|
| 355 | mem.exec_opts = exec_opts # circular dep
|
| 356 | mutable_opts.Init()
|
| 357 |
|
| 358 | # Set these BEFORE processing flags, so they can be overridden.
|
| 359 | if lang == 'ysh':
|
| 360 | mutable_opts.SetAnyOption('ysh:all', True)
|
| 361 |
|
| 362 | pure_osh.SetOptionsFromFlags(mutable_opts, attrs.opt_changes,
|
| 363 | attrs.shopt_changes)
|
| 364 |
|
| 365 | version_str = pyutil.GetVersion(loader)
|
| 366 | state.InitMem(mem, environ, version_str)
|
| 367 |
|
| 368 | # TODO: consider turning on no_copy_env in YSH
|
| 369 | if exec_opts.no_copy_env():
|
| 370 | # Don't consult the environment
|
| 371 | mem.SetPwd(state.GetWorkingDir())
|
| 372 | else:
|
| 373 | state.InitVarsFromEnv(mem, environ)
|
| 374 |
|
| 375 | # MUTABLE GLOBAL that's SEPARATE from $PWD. Used by the 'pwd' builtin, but
|
| 376 | # it can't be modified by users.
|
| 377 | val = mem.GetValue('PWD')
|
| 378 | # should be true since it's exported
|
| 379 | assert val.tag() == value_e.Str, val
|
| 380 | pwd = cast(value.Str, val).s
|
| 381 | mem.SetPwd(pwd)
|
| 382 |
|
| 383 | if attrs.show_options: # special case: sh -o
|
| 384 | mutable_opts.ShowOptions([])
|
| 385 | return 0
|
| 386 |
|
| 387 | # feedback between runtime and parser
|
| 388 | aliases = {} # type: Dict[str, str]
|
| 389 |
|
| 390 | ysh_grammar = pyutil.LoadYshGrammar(loader)
|
| 391 |
|
| 392 | if flag.do_lossless and not exec_opts.noexec():
|
| 393 | raise error.Usage('--one-pass-parse requires noexec (-n)', loc.Missing)
|
| 394 |
|
| 395 | # Tools always use one pass parse
|
| 396 | # Note: osh --tool syntax-tree is like osh -n --one-pass-parse
|
| 397 | do_lossless = True if len(flag.tool) else flag.do_lossless
|
| 398 |
|
| 399 | parse_ctx = parse_lib.ParseContext(arena,
|
| 400 | parse_opts,
|
| 401 | aliases,
|
| 402 | ysh_grammar,
|
| 403 | do_lossless=do_lossless)
|
| 404 |
|
| 405 | # Three ParseContext instances SHARE aliases.
|
| 406 | comp_arena = alloc.Arena()
|
| 407 | comp_arena.PushSource(source.Unused('completion'))
|
| 408 | trail1 = parse_lib.Trail()
|
| 409 | # do_lossless needs to be turned on to complete inside backticks. TODO:
|
| 410 | # fix the issue where ` gets erased because it's not part of
|
| 411 | # set_completer_delims().
|
| 412 | comp_ctx = parse_lib.ParseContext(comp_arena,
|
| 413 | parse_opts,
|
| 414 | aliases,
|
| 415 | ysh_grammar,
|
| 416 | do_lossless=True)
|
| 417 | comp_ctx.Init_Trail(trail1)
|
| 418 |
|
| 419 | hist_arena = alloc.Arena()
|
| 420 | hist_arena.PushSource(source.Unused('history'))
|
| 421 | trail2 = parse_lib.Trail()
|
| 422 | hist_ctx = parse_lib.ParseContext(hist_arena, parse_opts, aliases,
|
| 423 | ysh_grammar)
|
| 424 | hist_ctx.Init_Trail(trail2)
|
| 425 |
|
| 426 | # Deps helps manages dependencies. These dependencies are circular:
|
| 427 | # - cmd_ev and word_ev, arith_ev -- for command sub, arith sub
|
| 428 | # - arith_ev and word_ev -- for $(( ${a} )) and $x$(( 1 ))
|
| 429 | # - cmd_ev and builtins (which execute code, like eval)
|
| 430 | # - prompt_ev needs word_ev for $PS1, which needs prompt_ev for @P
|
| 431 | cmd_deps = cmd_eval.Deps()
|
| 432 | cmd_deps.mutable_opts = mutable_opts
|
| 433 |
|
| 434 | job_control = process.JobControl()
|
| 435 | job_list = process.JobList()
|
| 436 | fd_state = process.FdState(errfmt, job_control, job_list, mem, None, None,
|
| 437 | exec_opts)
|
| 438 |
|
| 439 | my_pid = posix.getpid()
|
| 440 |
|
| 441 | debug_path = ''
|
| 442 | debug_dir = environ.get('OILS_DEBUG_DIR')
|
| 443 | if flag.debug_file is not None:
|
| 444 | # --debug-file takes precedence over OSH_DEBUG_DIR
|
| 445 | debug_path = flag.debug_file
|
| 446 | elif debug_dir is not None:
|
| 447 | debug_path = os_path.join(debug_dir, '%d-osh.log' % my_pid)
|
| 448 |
|
| 449 | if len(debug_path):
|
| 450 | # This will be created as an empty file if it doesn't exist, or it could be
|
| 451 | # a pipe.
|
| 452 | try:
|
| 453 | debug_f = util.DebugFile(
|
| 454 | fd_state.OpenForWrite(debug_path)) # type: util._DebugFile
|
| 455 | except (IOError, OSError) as e:
|
| 456 | print_stderr("%s: Couldn't open %r: %s" %
|
| 457 | (lang, debug_path, posix.strerror(e.errno)))
|
| 458 | return 2
|
| 459 | else:
|
| 460 | debug_f = util.NullDebugFile()
|
| 461 |
|
| 462 | if flag.xtrace_to_debug_file:
|
| 463 | trace_f = debug_f
|
| 464 | else:
|
| 465 | trace_f = util.DebugFile(mylib.Stderr())
|
| 466 |
|
| 467 | trace_dir = environ.get('OILS_TRACE_DIR', '')
|
| 468 | dumps = environ.get('OILS_TRACE_DUMPS', '')
|
| 469 | streams = environ.get('OILS_TRACE_STREAMS', '')
|
| 470 | multi_trace = dev.MultiTracer(my_pid, trace_dir, dumps, streams, fd_state)
|
| 471 |
|
| 472 | tracer = dev.Tracer(parse_ctx, exec_opts, mutable_opts, mem, trace_f,
|
| 473 | multi_trace)
|
| 474 | fd_state.tracer = tracer # circular dep
|
| 475 |
|
| 476 | signal_safe = pyos.InitSignalSafe()
|
| 477 | trap_state = trap_osh.TrapState(signal_safe)
|
| 478 |
|
| 479 | waiter = process.Waiter(job_list, exec_opts, signal_safe, tracer)
|
| 480 | fd_state.waiter = waiter
|
| 481 |
|
| 482 | cmd_deps.debug_f = debug_f
|
| 483 |
|
| 484 | now = time_.time()
|
| 485 | iso_stamp = time_.strftime("%Y-%m-%d %H:%M:%S", time_.localtime(now))
|
| 486 |
|
| 487 | argv_buf = mylib.BufWriter()
|
| 488 | dev.PrintShellArgv(arg_r.argv, argv_buf)
|
| 489 |
|
| 490 | debug_f.writeln('%s [%d] Oils started with argv %s' %
|
| 491 | (iso_stamp, my_pid, argv_buf.getvalue()))
|
| 492 | if len(debug_path):
|
| 493 | debug_f.writeln('Writing logs to %r' % debug_path)
|
| 494 |
|
| 495 | interp = environ.get('OILS_HIJACK_SHEBANG', '')
|
| 496 | search_path = state.SearchPath(mem)
|
| 497 | ext_prog = process.ExternalProgram(interp, fd_state, errfmt, debug_f)
|
| 498 |
|
| 499 | splitter = split.SplitContext(mem)
|
| 500 | # TODO: This is instantiation is duplicated in osh/word_eval.py
|
| 501 | globber = glob_.Globber(exec_opts)
|
| 502 |
|
| 503 | # This could just be OILS_TRACE_DUMPS='crash:argv0'
|
| 504 | crash_dump_dir = environ.get('OILS_CRASH_DUMP_DIR', '')
|
| 505 | cmd_deps.dumper = dev.CrashDumper(crash_dump_dir, fd_state)
|
| 506 |
|
| 507 | comp_lookup = completion.Lookup()
|
| 508 |
|
| 509 | # Various Global State objects to work around readline interfaces
|
| 510 | compopt_state = completion.OptionState()
|
| 511 |
|
| 512 | comp_ui_state = comp_ui.State()
|
| 513 | prompt_state = comp_ui.PromptState()
|
| 514 |
|
| 515 | # The login program is supposed to set $HOME
|
| 516 | # https://superuser.com/questions/271925/where-is-the-home-environment-variable-set
|
| 517 | # state.InitMem(mem) must happen first
|
| 518 | tilde_ev = word_eval.TildeEvaluator(mem, exec_opts)
|
| 519 | home_dir = tilde_ev.GetMyHomeDir()
|
| 520 | if home_dir is None:
|
| 521 | # TODO: print errno from getpwuid()
|
| 522 | print_stderr("%s: Failed to get home dir from $HOME or getpwuid()" %
|
| 523 | lang)
|
| 524 | return 1
|
| 525 |
|
| 526 | sh_files = ShellFiles(lang, home_dir, mem, flag)
|
| 527 | sh_files.InitAfterLoadingEnv()
|
| 528 |
|
| 529 | #
|
| 530 | # Executor and Evaluators (are circularly dependent)
|
| 531 | #
|
| 532 |
|
| 533 | # Global proc namespace. Funcs are defined in the common variable
|
| 534 | # namespace.
|
| 535 | procs = state.Procs(mem) # type: state.Procs
|
| 536 |
|
| 537 | builtins = {} # type: Dict[int, vm._Builtin]
|
| 538 |
|
| 539 | # e.g. s->startswith()
|
| 540 | methods = {} # type: Dict[int, Dict[str, vm._Callable]]
|
| 541 |
|
| 542 | hay_state = hay_ysh.HayState()
|
| 543 |
|
| 544 | shell_ex = executor.ShellExecutor(mem, exec_opts, mutable_opts, procs,
|
| 545 | hay_state, builtins, search_path,
|
| 546 | ext_prog, waiter, tracer, job_control,
|
| 547 | job_list, fd_state, trap_state, errfmt)
|
| 548 |
|
| 549 | arith_ev = sh_expr_eval.ArithEvaluator(mem, exec_opts, mutable_opts,
|
| 550 | parse_ctx, errfmt)
|
| 551 | bool_ev = sh_expr_eval.BoolEvaluator(mem, exec_opts, mutable_opts,
|
| 552 | parse_ctx, errfmt)
|
| 553 | expr_ev = expr_eval.ExprEvaluator(mem, mutable_opts, methods, splitter,
|
| 554 | errfmt)
|
| 555 | word_ev = word_eval.NormalWordEvaluator(mem, exec_opts, mutable_opts,
|
| 556 | tilde_ev, splitter, errfmt)
|
| 557 |
|
| 558 | assign_b = InitAssignmentBuiltins(mem, procs, exec_opts, errfmt)
|
| 559 | cmd_ev = cmd_eval.CommandEvaluator(mem, exec_opts, errfmt, procs, assign_b,
|
| 560 | arena, cmd_deps, trap_state,
|
| 561 | signal_safe)
|
| 562 |
|
| 563 | # PromptEvaluator rendering is needed in non-interactive shells for @P.
|
| 564 | prompt_ev = prompt.Evaluator(lang, version_str, parse_ctx, mem)
|
| 565 | global_io = value.IO(cmd_ev, prompt_ev)
|
| 566 |
|
| 567 | io_methods = {
|
| 568 | '__mut_eval': value.BuiltinFunc(method_io.Eval(cmd_ev)),
|
| 569 | 'captureStdout': value.BuiltinFunc(method_io.CaptureStdout(shell_ex)),
|
| 570 |
|
| 571 | # TODO: glob, etc.
|
| 572 | } # type: Dict[str, value_t]
|
| 573 | io_props = {'stdin': value.Stdin} # type: Dict[str, value_t]
|
| 574 | io_obj = Obj(io_props, Obj(io_methods, None))
|
| 575 |
|
| 576 | # Wire up circular dependencies.
|
| 577 | vm.InitCircularDeps(arith_ev, bool_ev, expr_ev, word_ev, cmd_ev, shell_ex,
|
| 578 | prompt_ev, global_io, tracer)
|
| 579 |
|
| 580 | unsafe_arith = sh_expr_eval.UnsafeArith(mem, exec_opts, mutable_opts,
|
| 581 | parse_ctx, arith_ev, errfmt)
|
| 582 | vm.InitUnsafeArith(mem, word_ev, unsafe_arith)
|
| 583 |
|
| 584 | #
|
| 585 | # Initialize Built-in Procs
|
| 586 | #
|
| 587 |
|
| 588 | b = builtins # short alias for initialization
|
| 589 |
|
| 590 | if mylib.PYTHON:
|
| 591 | if help_meta:
|
| 592 | help_data = help_meta.TopicMetadata()
|
| 593 | else:
|
| 594 | help_data = {} # minimal build
|
| 595 | else:
|
| 596 | help_data = help_meta.TopicMetadata()
|
| 597 | b[builtin_i.help] = misc_osh.Help(lang, loader, help_data, errfmt)
|
| 598 |
|
| 599 | # Interpreter state
|
| 600 | b[builtin_i.set] = pure_osh.Set(mutable_opts, mem)
|
| 601 | b[builtin_i.shopt] = pure_osh.Shopt(mutable_opts, cmd_ev)
|
| 602 |
|
| 603 | b[builtin_i.hash] = pure_osh.Hash(search_path) # not really pure
|
| 604 | b[builtin_i.trap] = trap_osh.Trap(trap_state, parse_ctx, tracer, errfmt)
|
| 605 |
|
| 606 | b[builtin_i.shvar] = pure_ysh.Shvar(mem, search_path, cmd_ev)
|
| 607 | b[builtin_i.ctx] = pure_ysh.Ctx(mem, cmd_ev)
|
| 608 | b[builtin_i.push_registers] = pure_ysh.PushRegisters(mem, cmd_ev)
|
| 609 |
|
| 610 | # Hay
|
| 611 | b[builtin_i.hay] = hay_ysh.Hay(hay_state, mutable_opts, mem, cmd_ev)
|
| 612 | b[builtin_i.haynode] = hay_ysh.HayNode_(hay_state, mem, cmd_ev)
|
| 613 |
|
| 614 | # Interpreter introspection
|
| 615 | b[builtin_i.type] = meta_osh.Type(procs, aliases, search_path, errfmt)
|
| 616 | b[builtin_i.builtin] = meta_osh.Builtin(shell_ex, errfmt)
|
| 617 | b[builtin_i.command] = meta_osh.Command(shell_ex, procs, aliases,
|
| 618 | search_path)
|
| 619 | # Part of YSH, but similar to builtin/command
|
| 620 | b[builtin_i.runproc] = meta_osh.RunProc(shell_ex, procs, errfmt)
|
| 621 |
|
| 622 | # Meta builtins
|
| 623 | source_builtin = meta_osh.Source(parse_ctx, search_path, cmd_ev, fd_state,
|
| 624 | tracer, errfmt, loader)
|
| 625 | b[builtin_i.source] = source_builtin
|
| 626 | b[builtin_i.dot] = source_builtin
|
| 627 | b[builtin_i.eval] = meta_osh.Eval(parse_ctx, exec_opts, cmd_ev, tracer,
|
| 628 | errfmt, mem)
|
| 629 |
|
| 630 | # Module builtins
|
| 631 | guards = {} # type: Dict[str, bool]
|
| 632 | b[builtin_i.source_guard] = module_ysh.SourceGuard(guards, exec_opts,
|
| 633 | errfmt)
|
| 634 | b[builtin_i.is_main] = module_ysh.IsMain(mem)
|
| 635 | b[builtin_i.use] = module_ysh.Use(mem, errfmt)
|
| 636 |
|
| 637 | # Errors
|
| 638 | b[builtin_i.error] = error_ysh.Error()
|
| 639 | b[builtin_i.failed] = error_ysh.Failed(mem)
|
| 640 | b[builtin_i.boolstatus] = error_ysh.BoolStatus(shell_ex, errfmt)
|
| 641 | b[builtin_i.try_] = error_ysh.Try(mutable_opts, mem, cmd_ev, shell_ex,
|
| 642 | errfmt)
|
| 643 | b[builtin_i.assert_] = error_ysh.Assert(expr_ev, errfmt)
|
| 644 |
|
| 645 | # Pure builtins
|
| 646 | true_ = pure_osh.Boolean(0)
|
| 647 | b[builtin_i.colon] = true_ # a "special" builtin
|
| 648 | b[builtin_i.true_] = true_
|
| 649 | b[builtin_i.false_] = pure_osh.Boolean(1)
|
| 650 |
|
| 651 | b[builtin_i.alias] = pure_osh.Alias(aliases, errfmt)
|
| 652 | b[builtin_i.unalias] = pure_osh.UnAlias(aliases, errfmt)
|
| 653 |
|
| 654 | b[builtin_i.getopts] = pure_osh.GetOpts(mem, errfmt)
|
| 655 |
|
| 656 | b[builtin_i.shift] = assign_osh.Shift(mem)
|
| 657 | b[builtin_i.unset] = assign_osh.Unset(mem, procs, unsafe_arith, errfmt)
|
| 658 |
|
| 659 | b[builtin_i.append] = pure_ysh.Append(mem, errfmt)
|
| 660 |
|
| 661 | # test / [ differ by need_right_bracket
|
| 662 | b[builtin_i.test] = bracket_osh.Test(False, exec_opts, mem, errfmt)
|
| 663 | b[builtin_i.bracket] = bracket_osh.Test(True, exec_opts, mem, errfmt)
|
| 664 |
|
| 665 | # Output
|
| 666 | b[builtin_i.echo] = io_osh.Echo(exec_opts)
|
| 667 | b[builtin_i.printf] = printf_osh.Printf(mem, parse_ctx, unsafe_arith,
|
| 668 | errfmt)
|
| 669 | b[builtin_i.write] = io_ysh.Write(mem, errfmt)
|
| 670 | b[builtin_i.fopen] = io_ysh.Fopen(mem, cmd_ev)
|
| 671 |
|
| 672 | # (pp output format isn't stable)
|
| 673 | b[builtin_i.pp] = io_ysh.Pp(expr_ev, mem, errfmt, procs, arena)
|
| 674 |
|
| 675 | # Input
|
| 676 | b[builtin_i.cat] = io_osh.Cat() # for $(<file)
|
| 677 | b[builtin_i.read] = read_osh.Read(splitter, mem, parse_ctx, cmd_ev, errfmt)
|
| 678 |
|
| 679 | mapfile = io_osh.MapFile(mem, errfmt, cmd_ev)
|
| 680 | b[builtin_i.mapfile] = mapfile
|
| 681 | b[builtin_i.readarray] = mapfile
|
| 682 |
|
| 683 | # Dirs
|
| 684 | dir_stack = dirs_osh.DirStack()
|
| 685 | b[builtin_i.cd] = dirs_osh.Cd(mem, dir_stack, cmd_ev, errfmt)
|
| 686 | b[builtin_i.pushd] = dirs_osh.Pushd(mem, dir_stack, errfmt)
|
| 687 | b[builtin_i.popd] = dirs_osh.Popd(mem, dir_stack, errfmt)
|
| 688 | b[builtin_i.dirs] = dirs_osh.Dirs(mem, dir_stack, errfmt)
|
| 689 | b[builtin_i.pwd] = dirs_osh.Pwd(mem, errfmt)
|
| 690 |
|
| 691 | b[builtin_i.times] = misc_osh.Times()
|
| 692 |
|
| 693 | b[builtin_i.json] = json_ysh.Json(mem, errfmt, False)
|
| 694 | b[builtin_i.json8] = json_ysh.Json(mem, errfmt, True)
|
| 695 |
|
| 696 | ### Process builtins
|
| 697 | b[builtin_i.exec_] = process_osh.Exec(mem, ext_prog, fd_state, search_path,
|
| 698 | errfmt)
|
| 699 | b[builtin_i.umask] = process_osh.Umask()
|
| 700 | b[builtin_i.ulimit] = process_osh.Ulimit()
|
| 701 | b[builtin_i.wait] = process_osh.Wait(waiter, job_list, mem, tracer, errfmt)
|
| 702 |
|
| 703 | b[builtin_i.jobs] = process_osh.Jobs(job_list)
|
| 704 | b[builtin_i.fg] = process_osh.Fg(job_control, job_list, waiter)
|
| 705 | b[builtin_i.bg] = process_osh.Bg(job_list)
|
| 706 |
|
| 707 | # Could be in process_ysh
|
| 708 | b[builtin_i.fork] = process_osh.Fork(shell_ex)
|
| 709 | b[builtin_i.forkwait] = process_osh.ForkWait(shell_ex)
|
| 710 |
|
| 711 | # Interactive builtins depend on readline
|
| 712 | b[builtin_i.bind] = readline_osh.Bind(readline, errfmt)
|
| 713 | b[builtin_i.history] = readline_osh.History(readline, sh_files, errfmt,
|
| 714 | mylib.Stdout())
|
| 715 |
|
| 716 | # Completion
|
| 717 | spec_builder = completion_osh.SpecBuilder(cmd_ev, parse_ctx, word_ev,
|
| 718 | splitter, comp_lookup, help_data,
|
| 719 | errfmt)
|
| 720 | complete_builtin = completion_osh.Complete(spec_builder, comp_lookup)
|
| 721 | b[builtin_i.complete] = complete_builtin
|
| 722 | b[builtin_i.compgen] = completion_osh.CompGen(spec_builder)
|
| 723 | b[builtin_i.compopt] = completion_osh.CompOpt(compopt_state, errfmt)
|
| 724 | b[builtin_i.compadjust] = completion_osh.CompAdjust(mem)
|
| 725 |
|
| 726 | comp_ev = word_eval.CompletionWordEvaluator(mem, exec_opts, mutable_opts,
|
| 727 | tilde_ev, splitter, errfmt)
|
| 728 |
|
| 729 | comp_ev.arith_ev = arith_ev
|
| 730 | comp_ev.expr_ev = expr_ev
|
| 731 | comp_ev.prompt_ev = prompt_ev
|
| 732 | comp_ev.CheckCircularDeps()
|
| 733 |
|
| 734 | root_comp = completion.RootCompleter(comp_ev, mem, comp_lookup,
|
| 735 | compopt_state, comp_ui_state,
|
| 736 | comp_ctx, debug_f)
|
| 737 | b[builtin_i.compexport] = completion_ysh.CompExport(root_comp)
|
| 738 |
|
| 739 | #
|
| 740 | # Initialize Builtin-in Methods
|
| 741 | #
|
| 742 |
|
| 743 | methods[value_e.Str] = {
|
| 744 | 'startsWith': method_str.HasAffix(method_str.START),
|
| 745 | 'endsWith': method_str.HasAffix(method_str.END),
|
| 746 | 'trim': method_str.Trim(method_str.START | method_str.END),
|
| 747 | 'trimStart': method_str.Trim(method_str.START),
|
| 748 | 'trimEnd': method_str.Trim(method_str.END),
|
| 749 | 'upper': method_str.Upper(),
|
| 750 | 'lower': method_str.Lower(),
|
| 751 | 'split': method_str.Split(),
|
| 752 |
|
| 753 | # finds a substring, optional position to start at
|
| 754 | 'find': None,
|
| 755 |
|
| 756 | # replace substring, OR an eggex
|
| 757 | # takes count=3, the max number of replacements to do.
|
| 758 | 'replace': method_str.Replace(mem, expr_ev),
|
| 759 |
|
| 760 | # Like Python's re.search, except we put it on the string object
|
| 761 | # It's more consistent with Str->find(substring, pos=0)
|
| 762 | # It returns value.Match() rather than an integer
|
| 763 | 'search': method_str.SearchMatch(method_str.SEARCH),
|
| 764 |
|
| 765 | # like Python's re.match()
|
| 766 | 'leftMatch': method_str.SearchMatch(method_str.LEFT_MATCH),
|
| 767 |
|
| 768 | # like Python's re.fullmatch(), not sure if we really need it
|
| 769 | 'fullMatch': None,
|
| 770 | }
|
| 771 | methods[value_e.Dict] = {
|
| 772 | # TODO: __mut_erase
|
| 773 | 'erase': method_dict.Erase(),
|
| 774 |
|
| 775 | # Dict.get()
|
| 776 | # Dict.keys()
|
| 777 | # Dict.values()
|
| 778 | 'get': method_dict.Get(),
|
| 779 | 'keys': method_dict.Keys(),
|
| 780 | 'values': method_dict.Values(),
|
| 781 |
|
| 782 | # I think items() isn't as necessary because dicts are ordered?
|
| 783 | # YSH code shouldn't use the List of Lists representation.
|
| 784 |
|
| 785 | # could be d->tally() or d->increment(), but inc() is short
|
| 786 | #
|
| 787 | # call d->inc('mycounter')
|
| 788 | # call d->inc('mycounter', 3)
|
| 789 | 'inc': None,
|
| 790 |
|
| 791 | # call d->accum('mygroup', 'value')
|
| 792 | 'accum': None,
|
| 793 | }
|
| 794 | methods[value_e.List] = {
|
| 795 | # TODO: __mut_{reverse,append,extend,pop,insert,remove}
|
| 796 | 'reverse': method_list.Reverse(),
|
| 797 | 'append': method_list.Append(),
|
| 798 | 'extend': method_list.Extend(),
|
| 799 | 'pop': method_list.Pop(),
|
| 800 | 'insert': None, # insert object before index
|
| 801 | 'remove': None, # insert object before index
|
| 802 | 'indexOf': method_list.IndexOf(), # return first index of value, or -1
|
| 803 | # Python list() has index(), which raises ValueError
|
| 804 | # But this is consistent with Str->find(), and doesn't
|
| 805 | # use exceptions
|
| 806 | 'join': func_misc.Join(), # both a method and a func
|
| 807 | }
|
| 808 |
|
| 809 | methods[value_e.Match] = {
|
| 810 | 'group': func_eggex.MatchMethod(func_eggex.G, expr_ev),
|
| 811 | 'start': func_eggex.MatchMethod(func_eggex.S, None),
|
| 812 | 'end': func_eggex.MatchMethod(func_eggex.E, None),
|
| 813 | }
|
| 814 |
|
| 815 | methods[value_e.IO] = {
|
| 816 | # TODO: io.eval() or io->eval()?
|
| 817 | # We are not mutating the object itself - we are mutating the system.
|
| 818 | # That is already captured by io, so let's make it io.eval().
|
| 819 |
|
| 820 | # io->eval(myblock) is the functional version of eval (myblock)
|
| 821 | # Should we also have expr->eval() instead of evalExpr?
|
| 822 | 'eval': method_io.Eval(cmd_ev),
|
| 823 |
|
| 824 | # identical to command sub
|
| 825 | 'captureStdout': method_io.CaptureStdout(shell_ex),
|
| 826 | 'promptVal': method_io.PromptVal(),
|
| 827 | 'time': method_io.Time(),
|
| 828 | 'strftime': method_io.Strftime(),
|
| 829 | }
|
| 830 |
|
| 831 | methods[value_e.Place] = {
|
| 832 | # __mut_setValue()
|
| 833 |
|
| 834 | # instead of setplace keyword
|
| 835 | 'setValue': method_other.SetValue(mem),
|
| 836 | }
|
| 837 |
|
| 838 | methods[value_e.Command] = {
|
| 839 | # var x = ^(echo hi)
|
| 840 | # Export source code and line number
|
| 841 | # Useful for test frameworks and so forth
|
| 842 | 'export': None,
|
| 843 | }
|
| 844 |
|
| 845 | #
|
| 846 | # Initialize Built-in Funcs
|
| 847 | #
|
| 848 |
|
| 849 | parse_hay = func_hay.ParseHay(fd_state, parse_ctx, errfmt)
|
| 850 | eval_hay = func_hay.EvalHay(hay_state, mutable_opts, mem, cmd_ev)
|
| 851 | hay_func = func_hay.HayFunc(hay_state)
|
| 852 |
|
| 853 | _SetGlobalFunc(mem, 'parseHay', parse_hay)
|
| 854 | _SetGlobalFunc(mem, 'evalHay', eval_hay)
|
| 855 | _SetGlobalFunc(mem, '_hay', hay_func)
|
| 856 |
|
| 857 | _SetGlobalFunc(mem, 'len', func_misc.Len())
|
| 858 | _SetGlobalFunc(mem, 'type', func_misc.Type())
|
| 859 |
|
| 860 | g = func_eggex.MatchFunc(func_eggex.G, expr_ev, mem)
|
| 861 | _SetGlobalFunc(mem, '_group', g)
|
| 862 | _SetGlobalFunc(mem, '_match', g) # TODO: remove this backward compat alias
|
| 863 | _SetGlobalFunc(mem, '_start', func_eggex.MatchFunc(func_eggex.S, None,
|
| 864 | mem))
|
| 865 | _SetGlobalFunc(mem, '_end', func_eggex.MatchFunc(func_eggex.E, None, mem))
|
| 866 |
|
| 867 | _SetGlobalFunc(mem, 'evalExpr', func_misc.EvalExpr(expr_ev))
|
| 868 |
|
| 869 | _SetGlobalFunc(mem, 'Object', func_misc.Object())
|
| 870 | _SetGlobalFunc(mem, 'prototype', func_misc.Prototype())
|
| 871 |
|
| 872 | # type conversions
|
| 873 | _SetGlobalFunc(mem, 'bool', func_misc.Bool())
|
| 874 | _SetGlobalFunc(mem, 'int', func_misc.Int())
|
| 875 | _SetGlobalFunc(mem, 'float', func_misc.Float())
|
| 876 | _SetGlobalFunc(mem, 'str', func_misc.Str_())
|
| 877 | _SetGlobalFunc(mem, 'list', func_misc.List_())
|
| 878 | _SetGlobalFunc(mem, 'dict', func_misc.DictFunc())
|
| 879 |
|
| 880 | _SetGlobalFunc(mem, 'runes', func_misc.Runes())
|
| 881 | _SetGlobalFunc(mem, 'encodeRunes', func_misc.EncodeRunes())
|
| 882 | _SetGlobalFunc(mem, 'bytes', func_misc.Bytes())
|
| 883 | _SetGlobalFunc(mem, 'encodeBytes', func_misc.EncodeBytes())
|
| 884 |
|
| 885 | # Str
|
| 886 | #_SetGlobalFunc(mem, 'strcmp', None)
|
| 887 | # TODO: This should be Python style splitting
|
| 888 | _SetGlobalFunc(mem, 'split', func_misc.Split(splitter))
|
| 889 | _SetGlobalFunc(mem, 'shSplit', func_misc.Split(splitter))
|
| 890 |
|
| 891 | # Float
|
| 892 | _SetGlobalFunc(mem, 'floatsEqual', func_misc.FloatsEqual())
|
| 893 |
|
| 894 | # List
|
| 895 | _SetGlobalFunc(mem, 'join', func_misc.Join())
|
| 896 | _SetGlobalFunc(mem, 'maybe', func_misc.Maybe())
|
| 897 | _SetGlobalFunc(mem, 'glob', func_misc.Glob(globber))
|
| 898 |
|
| 899 | _SetGlobalFunc(mem, 'shvarGet', func_misc.Shvar_get(mem))
|
| 900 | _SetGlobalFunc(mem, 'getVar', func_misc.GetVar(mem))
|
| 901 |
|
| 902 | # Serialize
|
| 903 | _SetGlobalFunc(mem, 'toJson8', func_misc.ToJson8(True))
|
| 904 | _SetGlobalFunc(mem, 'toJson', func_misc.ToJson8(False))
|
| 905 |
|
| 906 | _SetGlobalFunc(mem, 'fromJson8', func_misc.FromJson8(True))
|
| 907 | _SetGlobalFunc(mem, 'fromJson', func_misc.FromJson8(False))
|
| 908 |
|
| 909 | # Demos
|
| 910 | _SetGlobalFunc(mem, '_a2sp', func_misc.BashArrayToSparse())
|
| 911 | _SetGlobalFunc(mem, '_opsp', func_misc.SparseOp())
|
| 912 |
|
| 913 | # TODO: remove this
|
| 914 | mem.SetNamed(location.LName('_io'), global_io, scope_e.GlobalOnly)
|
| 915 |
|
| 916 | # TODO: 'io' can be in the builtin module, and then hidden in functions
|
| 917 | mem.SetNamed(location.LName('io'), io_obj, scope_e.GlobalOnly)
|
| 918 |
|
| 919 | #mem.SetNamed(location.LName('stdin'), value.Stdin, scope_e.GlobalOnly)
|
| 920 |
|
| 921 | #
|
| 922 | # Is the shell interactive?
|
| 923 | #
|
| 924 |
|
| 925 | # History evaluation is a no-op if readline is None.
|
| 926 | hist_ev = history.Evaluator(readline, hist_ctx, debug_f)
|
| 927 |
|
| 928 | if flag.c is not None:
|
| 929 | src = source.CFlag # type: source_t
|
| 930 | line_reader = reader.StringLineReader(flag.c,
|
| 931 | arena) # type: reader._Reader
|
| 932 | if flag.i: # -c and -i can be combined
|
| 933 | mutable_opts.set_interactive()
|
| 934 |
|
| 935 | elif flag.i: # force interactive
|
| 936 | src = source.Stdin(' -i')
|
| 937 | line_reader = reader.InteractiveLineReader(arena, prompt_ev, hist_ev,
|
| 938 | readline, prompt_state)
|
| 939 | mutable_opts.set_interactive()
|
| 940 |
|
| 941 | else:
|
| 942 | if script_name is None:
|
| 943 | if flag.headless:
|
| 944 | src = source.Headless
|
| 945 | line_reader = None # unused!
|
| 946 | # Not setting '-i' flag for now. Some people's bashrc may want it?
|
| 947 | else:
|
| 948 | stdin_ = mylib.Stdin()
|
| 949 | # --tool never starts a prompt
|
| 950 | if len(flag.tool) == 0 and stdin_.isatty():
|
| 951 | src = source.Interactive
|
| 952 | line_reader = reader.InteractiveLineReader(
|
| 953 | arena, prompt_ev, hist_ev, readline, prompt_state)
|
| 954 | mutable_opts.set_interactive()
|
| 955 | else:
|
| 956 | src = source.Stdin('')
|
| 957 | line_reader = reader.FileLineReader(stdin_, arena)
|
| 958 | else:
|
| 959 | src = source.MainFile(script_name)
|
| 960 | try:
|
| 961 | f = fd_state.Open(script_name)
|
| 962 | except (IOError, OSError) as e:
|
| 963 | print_stderr("%s: Couldn't open %r: %s" %
|
| 964 | (lang, script_name, posix.strerror(e.errno)))
|
| 965 | return 1
|
| 966 | line_reader = reader.FileLineReader(f, arena)
|
| 967 |
|
| 968 | # Pretend it came from somewhere else
|
| 969 | if flag.location_str is not None:
|
| 970 | src = source.Synthetic(flag.location_str)
|
| 971 | assert line_reader is not None
|
| 972 | location_start_line = mops.BigTruncate(flag.location_start_line)
|
| 973 | if location_start_line != -1:
|
| 974 | line_reader.SetLineOffset(location_start_line)
|
| 975 |
|
| 976 | arena.PushSource(src)
|
| 977 |
|
| 978 | # Calculate ~/.config/oils/oshrc or yshrc. Used for both -i and --headless
|
| 979 | # We avoid cluttering the user's home directory. Some users may want to ln
|
| 980 | # -s ~/.config/oils/oshrc ~/oshrc or ~/.oshrc.
|
| 981 |
|
| 982 | # https://unix.stackexchange.com/questions/24347/why-do-some-applications-use-config-appname-for-their-config-data-while-other
|
| 983 |
|
| 984 | config_dir = '.config/oils'
|
| 985 | rc_paths = [] # type: List[str]
|
| 986 | if not flag.norc and (flag.headless or exec_opts.interactive()):
|
| 987 | # User's rcfile comes FIRST. Later we can add an 'after-rcdir' hook
|
| 988 | rc_path = flag.rcfile
|
| 989 | if rc_path is None:
|
| 990 | rc_paths.append(
|
| 991 | os_path.join(home_dir, '%s/%src' % (config_dir, lang)))
|
| 992 | else:
|
| 993 | rc_paths.append(rc_path)
|
| 994 |
|
| 995 | # Load all files in ~/.config/oil/oshrc.d or oilrc.d
|
| 996 | # This way "installers" can avoid mutating oshrc directly
|
| 997 |
|
| 998 | rc_dir = flag.rcdir
|
| 999 | if rc_dir is None:
|
| 1000 | rc_dir = os_path.join(home_dir, '%s/%src.d' % (config_dir, lang))
|
| 1001 |
|
| 1002 | rc_paths.extend(libc.glob(os_path.join(rc_dir, '*')))
|
| 1003 | else:
|
| 1004 | if flag.rcfile is not None: # bash doesn't have this warning, but it's useful
|
| 1005 | print_stderr('%s warning: --rcfile ignored with --norc' % lang)
|
| 1006 | if flag.rcdir is not None:
|
| 1007 | print_stderr('%s warning: --rcdir ignored with --norc' % lang)
|
| 1008 |
|
| 1009 | # Initialize even in non-interactive shell, for 'compexport'
|
| 1010 | _InitDefaultCompletions(cmd_ev, complete_builtin, comp_lookup)
|
| 1011 |
|
| 1012 | if flag.headless:
|
| 1013 | state.InitInteractive(mem)
|
| 1014 | mutable_opts.set_redefine_proc_func()
|
| 1015 | mutable_opts.set_redefine_module()
|
| 1016 |
|
| 1017 | # NOTE: rc files loaded AFTER _InitDefaultCompletions.
|
| 1018 | for rc_path in rc_paths:
|
| 1019 | with state.ctx_ThisDir(mem, rc_path):
|
| 1020 | try:
|
| 1021 | SourceStartupFile(fd_state, rc_path, lang, parse_ctx,
|
| 1022 | cmd_ev, errfmt)
|
| 1023 | except util.UserExit as e:
|
| 1024 | return e.status
|
| 1025 |
|
| 1026 | loop = main_loop.Headless(cmd_ev, parse_ctx, errfmt)
|
| 1027 | try:
|
| 1028 | # TODO: What other exceptions happen here?
|
| 1029 | status = loop.Loop()
|
| 1030 | except util.UserExit as e:
|
| 1031 | status = e.status
|
| 1032 |
|
| 1033 | # Same logic as interactive shell
|
| 1034 | mut_status = IntParamBox(status)
|
| 1035 | cmd_ev.RunTrapsOnExit(mut_status)
|
| 1036 | status = mut_status.i
|
| 1037 |
|
| 1038 | return status
|
| 1039 |
|
| 1040 | # Note: headless mode above doesn't use c_parser
|
| 1041 | assert line_reader is not None
|
| 1042 | c_parser = parse_ctx.MakeOshParser(line_reader)
|
| 1043 |
|
| 1044 | if exec_opts.interactive():
|
| 1045 | state.InitInteractive(mem)
|
| 1046 | # bash: 'set -o emacs' is the default only in the interactive shell
|
| 1047 | mutable_opts.set_emacs()
|
| 1048 | mutable_opts.set_redefine_proc_func()
|
| 1049 | mutable_opts.set_redefine_module()
|
| 1050 |
|
| 1051 | if readline:
|
| 1052 | term_width = 0
|
| 1053 | if flag.completion_display == 'nice':
|
| 1054 | try:
|
| 1055 | term_width = libc.get_terminal_width()
|
| 1056 | except (IOError, OSError): # stdin not a terminal
|
| 1057 | pass
|
| 1058 |
|
| 1059 | if term_width != 0:
|
| 1060 | display = comp_ui.NiceDisplay(
|
| 1061 | term_width, comp_ui_state, prompt_state, debug_f, readline,
|
| 1062 | signal_safe) # type: comp_ui._IDisplay
|
| 1063 | else:
|
| 1064 | display = comp_ui.MinimalDisplay(comp_ui_state, prompt_state,
|
| 1065 | debug_f)
|
| 1066 |
|
| 1067 | comp_ui.InitReadline(readline, sh_files.HistoryFile(), root_comp,
|
| 1068 | display, debug_f)
|
| 1069 |
|
| 1070 | _InitDefaultCompletions(cmd_ev, complete_builtin, comp_lookup)
|
| 1071 | if flag.completion_demo:
|
| 1072 | _CompletionDemo(comp_lookup)
|
| 1073 |
|
| 1074 | else: # Without readline module
|
| 1075 | display = comp_ui.MinimalDisplay(comp_ui_state, prompt_state,
|
| 1076 | debug_f)
|
| 1077 |
|
| 1078 | process.InitInteractiveShell() # Set signal handlers
|
| 1079 |
|
| 1080 | # The interactive shell leads a process group which controls the terminal.
|
| 1081 | # It MUST give up the terminal afterward, otherwise we get SIGTTIN /
|
| 1082 | # SIGTTOU bugs.
|
| 1083 | with process.ctx_TerminalControl(job_control, errfmt):
|
| 1084 |
|
| 1085 | # NOTE: rc files loaded AFTER _InitDefaultCompletions.
|
| 1086 | for rc_path in rc_paths:
|
| 1087 | with state.ctx_ThisDir(mem, rc_path):
|
| 1088 | try:
|
| 1089 | SourceStartupFile(fd_state, rc_path, lang, parse_ctx,
|
| 1090 | cmd_ev, errfmt)
|
| 1091 | except util.UserExit as e:
|
| 1092 | return e.status
|
| 1093 |
|
| 1094 | assert line_reader is not None
|
| 1095 | line_reader.Reset() # After sourcing startup file, render $PS1
|
| 1096 |
|
| 1097 | prompt_plugin = prompt.UserPlugin(mem, parse_ctx, cmd_ev, errfmt)
|
| 1098 | try:
|
| 1099 | status = main_loop.Interactive(flag, cmd_ev, c_parser, display,
|
| 1100 | prompt_plugin, waiter, errfmt)
|
| 1101 | except util.UserExit as e:
|
| 1102 | status = e.status
|
| 1103 |
|
| 1104 | mut_status = IntParamBox(status)
|
| 1105 | cmd_ev.RunTrapsOnExit(mut_status)
|
| 1106 | status = mut_status.i
|
| 1107 |
|
| 1108 | if readline:
|
| 1109 | hist_file = sh_files.HistoryFile()
|
| 1110 | if hist_file is not None:
|
| 1111 | try:
|
| 1112 | readline.write_history_file(hist_file)
|
| 1113 | except (IOError, OSError):
|
| 1114 | pass
|
| 1115 |
|
| 1116 | return status
|
| 1117 |
|
| 1118 | if flag.rcfile is not None: # bash doesn't have this warning, but it's useful
|
| 1119 | print_stderr('%s warning: --rcfile ignored in non-interactive shell' %
|
| 1120 | lang)
|
| 1121 | if flag.rcdir is not None:
|
| 1122 | print_stderr('%s warning: --rcdir ignored in non-interactive shell' %
|
| 1123 | lang)
|
| 1124 |
|
| 1125 | #
|
| 1126 | # Tools that use the OSH/YSH parsing mode, etc.
|
| 1127 | #
|
| 1128 |
|
| 1129 | # flag.tool is '' if nothing is passed
|
| 1130 | # osh --tool syntax-tree is equivalent to osh -n --one-pass-parse
|
| 1131 | tool_name = 'syntax-tree' if exec_opts.noexec() else flag.tool
|
| 1132 |
|
| 1133 | if len(tool_name):
|
| 1134 | # Don't save tokens becaues it's slow
|
| 1135 | if tool_name != 'syntax-tree':
|
| 1136 | arena.SaveTokens()
|
| 1137 |
|
| 1138 | try:
|
| 1139 | node = main_loop.ParseWholeFile(c_parser)
|
| 1140 | except error.Parse as e:
|
| 1141 | errfmt.PrettyPrintError(e)
|
| 1142 | return 2
|
| 1143 |
|
| 1144 | if tool_name == 'syntax-tree':
|
| 1145 | ui.PrintAst(node, flag)
|
| 1146 |
|
| 1147 | elif tool_name == 'tokens':
|
| 1148 | ysh_ify.PrintTokens(arena)
|
| 1149 |
|
| 1150 | elif tool_name == 'lossless-cat': # for test/lossless.sh
|
| 1151 | ysh_ify.LosslessCat(arena)
|
| 1152 |
|
| 1153 | elif tool_name == 'fmt':
|
| 1154 | fmt.Format(arena, node)
|
| 1155 |
|
| 1156 | elif tool_name == 'test':
|
| 1157 | raise AssertionError('TODO')
|
| 1158 |
|
| 1159 | elif tool_name == 'ysh-ify':
|
| 1160 | ysh_ify.Ysh_ify(arena, node)
|
| 1161 |
|
| 1162 | elif tool_name == 'deps':
|
| 1163 | if mylib.PYTHON:
|
| 1164 | deps.Deps(node)
|
| 1165 |
|
| 1166 | else:
|
| 1167 | raise AssertionError(tool_name) # flag parser validated it
|
| 1168 |
|
| 1169 | return 0
|
| 1170 |
|
| 1171 | #
|
| 1172 | # Run a shell script
|
| 1173 | #
|
| 1174 |
|
| 1175 | with state.ctx_ThisDir(mem, script_name):
|
| 1176 | try:
|
| 1177 | status = main_loop.Batch(cmd_ev,
|
| 1178 | c_parser,
|
| 1179 | errfmt,
|
| 1180 | cmd_flags=cmd_eval.IsMainProgram)
|
| 1181 | except util.UserExit as e:
|
| 1182 | status = e.status
|
| 1183 | mut_status = IntParamBox(status)
|
| 1184 | cmd_ev.RunTrapsOnExit(mut_status)
|
| 1185 |
|
| 1186 | multi_trace.WriteDumps()
|
| 1187 |
|
| 1188 | # NOTE: We haven't closed the file opened with fd_state.Open
|
| 1189 | return mut_status.i
|