def AppBundleMain(argv):
login_shell = False
b = os.path.basename(argv[0])
main_name, ext = os.path.splitext(b)
if main_name.startswith('-'):
login_shell = True
main_name = main_name[1:]
if main_name == 'oil' and ext: # oil.py or oil.ovm
try:
first_arg = argv[1]
except IndexError:
raise args.UsageError('Missing required applet name.')
if first_arg in ('-h', '--help'):
builtin.Help(['bundle-usage'], util.GetResourceLoader())
sys.exit(0)
if first_arg in ('-V', '--version'):
_ShowVersion()
sys.exit(0)
main_name = first_arg
if main_name.startswith('-'): # TODO: Remove duplication above
login_shell = True
main_name = main_name[1:]
argv0 = argv[1]
main_argv = argv[2:]
else:
argv0 = argv[0]
main_argv = argv[1:]
if main_name in ('osh', 'sh'):
status = OshMain(argv0, main_argv, login_shell)
_tlog('done osh main')
return status
elif main_name == 'oshc':
return OshCommandMain(main_argv)
elif main_name == 'oil':
return OilMain(main_argv)
elif main_name == 'wok':
return WokMain(main_argv)
elif main_name == 'boil':
return BoilMain(main_argv)
# For testing latency
elif main_name == 'true':
return 0
elif main_name == 'false':
return 1
elif main_name == 'readlink':
return readlink.main(main_argv)
else:
raise args.UsageError('Invalid applet name %r.' % main_name)
def main(argv):
try:
sys.exit(OilMain(argv))
except NotImplementedError as e:
raise
except OilUsageError as e:
builtin.Help(['oil-usage'], util.GetResourceLoader())
print(str(e), file=sys.stderr)
sys.exit(2)
except RuntimeError as e:
print('FATAL: %s' % e, file=sys.stderr)
sys.exit(1)
def main(argv):
try:
sys.exit(OilMain(argv))
except NotImplementedError as e:
raise
except OilUsageError as e:
builtin.Help(['oil-usage'], util.GetResourceLoader())
print(str(e), file=sys.stderr)
sys.exit(2)
except RuntimeError as e:
print('FATAL: %s' % e, file=sys.stderr)
sys.exit(1)
finally:
_tlog('Exiting main()')
if _trace_path:
_tracer.Stop(_trace_path)
def OilMain(argv):
login_shell = False
b = os.path.basename(argv[0])
main_name, _ = os.path.splitext(b)
if main_name.startswith("-"):
login_shell = True
main_name = main_name[1:]
if main_name in ('oil', 'oil_main'):
try:
first_arg = argv[1]
except IndexError:
raise OilUsageError('Missing name of main()')
if first_arg in ('-h', '--help'):
builtin.Help(['oil-usage'], util.GetResourceLoader())
sys.exit(0)
if first_arg in ('-V', '--version'):
_ShowVersion()
sys.exit(0)
main_name = first_arg
if main_name.startswith("-"):
login_shell = True
main_name = main_name[1:]
main_argv = argv[2:]
else:
main_argv = argv[1:]
if main_name in ('osh', 'sh'):
status = OshMain(main_argv, login_shell)
tlog('done osh main')
return status
elif main_name == 'wok':
return WokMain(main_argv)
elif main_name == 'boil':
return BoilMain(main_argv)
elif main_name == 'true':
return 0
elif main_name == 'false':
return 1
else:
raise OilUsageError('Invalid main %r' % main_name)
def OilMain(argv):
arg_r = args.Reader(argv)
try:
opts = OIL_SPEC.Parse(arg_r)
except args.UsageError as e:
ui.usage('oil usage error: %s', e)
return 2
if opts.help:
loader = util.GetResourceLoader()
builtin.Help(['oil-usage'], loader)
return 0
if opts.version:
# OSH version is the only binary in Oil right now, so it's all one version.
_ShowVersion()
return 0
raise NotImplementedError('oil')
return 0
def OilMain(argv):
spec = args.FlagsAndOptions()
# TODO: -h too
spec.LongFlag('--help')
spec.LongFlag('--version')
#builtin.AddOptionsToArgSpec(spec)
try:
opts, opt_index = spec.Parse(argv)
except args.UsageError as e:
util.usage(str(e))
return 2
if opts.help:
loader = util.GetResourceLoader()
builtin.Help(['oil-usage'], loader)
return 0
if opts.version:
# OSH version is the only binary in Oil right now, so it's all one version.
_ShowVersion()
return 0
raise NotImplementedError('oil')
return 0
def OshMain(argv0, argv, login_shell):
spec = args.FlagsAndOptions()
spec.ShortFlag('-c', args.Str, quit_parsing_flags=True) # command string
spec.ShortFlag('-i') # interactive
# TODO: -h too
spec.LongFlag('--help')
spec.LongFlag('--version')
spec.LongFlag(
'--ast-format',
['text', 'abbrev-text', 'html', 'abbrev-html', 'oheap', 'none'],
default='abbrev-text')
spec.LongFlag('--show-ast') # execute and show
spec.LongFlag('--fix')
spec.LongFlag('--debug-spans') # For oshc translate
spec.LongFlag('--print-status')
spec.LongFlag(
'--trace',
['cmd-parse', 'word-parse', 'lexer']) # NOTE: can only trace one now
spec.LongFlag('--hijack-shebang')
# For benchmarks/*.sh
spec.LongFlag('--parser-mem-dump', args.Str)
spec.LongFlag('--runtime-mem-dump', args.Str)
builtin.AddOptionsToArgSpec(spec)
try:
opts, opt_index = spec.Parse(argv)
except args.UsageError as e:
util.usage(str(e))
return 2
if opts.help:
loader = util.GetResourceLoader()
builtin.Help(['osh-usage'], loader)
return 0
if opts.version:
# OSH version is the only binary in Oil right now, so it's all one version.
_ShowVersion()
return 0
trace_state = util.TraceState()
if 'cmd-parse' == opts.trace:
util.WrapMethods(cmd_parse.CommandParser, trace_state)
if 'word-parse' == opts.trace:
util.WrapMethods(word_parse.WordParser, trace_state)
if 'lexer' == opts.trace:
util.WrapMethods(lexer.Lexer, trace_state)
if opt_index == len(argv):
dollar0 = argv0
else:
dollar0 = argv[opt_index] # the script name, or the arg after -c
# TODO: Create a --parse action or 'osh parse' or 'oil osh-parse'
# osh-fix
# It uses a different memory-management model. It's a batch program and not
# an interactive program.
pool = alloc.Pool()
arena = pool.NewArena()
# TODO: Maybe wrap this initialization sequence up in an oil_State, like
# lua_State.
status_lines = ui.MakeStatusLines()
mem = state.Mem(dollar0, argv[opt_index + 1:], os.environ, arena)
funcs = {}
# Passed to Executor for 'complete', and passed to completion.Init
if completion:
comp_lookup = completion.CompletionLookup()
else:
# TODO: NullLookup?
comp_lookup = None
exec_opts = state.ExecOpts(mem)
builtin.SetExecOpts(exec_opts, opts.opt_changes)
fd_state = process.FdState()
ex = cmd_exec.Executor(mem, fd_state, status_lines, funcs, readline,
completion, comp_lookup, exec_opts, arena)
# NOTE: The rc file can contain both commands and functions... ideally we
# would only want to save nodes/lines for the functions.
try:
rc_path = 'oilrc'
arena.PushSource(rc_path)
with open(rc_path) as f:
rc_line_reader = reader.FileLineReader(f, arena)
_, rc_c_parser = parse_lib.MakeParser(rc_line_reader, arena)
try:
rc_node = rc_c_parser.ParseWholeFile()
if not rc_node:
err = rc_c_parser.Error()
ui.PrintErrorStack(err, arena, sys.stderr)
return 2 # parse error is code 2
finally:
arena.PopSource()
status = ex.Execute(rc_node)
#print('oilrc:', status, cflow, file=sys.stderr)
# Ignore bad status?
except IOError as e:
if e.errno != errno.ENOENT:
raise
if opts.c is not None:
arena.PushSource('<command string>')
line_reader = reader.StringLineReader(opts.c, arena)
if opts.i: # -c and -i can be combined
exec_opts.interactive = True
elif opts.i: # force interactive
arena.PushSource('<stdin -i>')
line_reader = reader.InteractiveLineReader(OSH_PS1, arena)
exec_opts.interactive = True
else:
try:
script_name = argv[opt_index]
except IndexError:
if sys.stdin.isatty():
arena.PushSource('<interactive>')
line_reader = reader.InteractiveLineReader(OSH_PS1, arena)
exec_opts.interactive = True
else:
arena.PushSource('<stdin>')
line_reader = reader.FileLineReader(sys.stdin, arena)
else:
arena.PushSource(script_name)
try:
f = fd_state.Open(script_name)
except OSError as e:
util.error("Couldn't open %r: %s", script_name,
os.strerror(e.errno))
return 1
line_reader = reader.FileLineReader(f, arena)
# TODO: assert arena.NumSourcePaths() == 1
# TODO: .rc file needs its own arena.
w_parser, c_parser = parse_lib.MakeParser(line_reader, arena)
if exec_opts.interactive:
# NOTE: We're using a different evaluator here. The completion system can
# also run functions... it gets the Executor through Executor._Complete.
if HAVE_READLINE:
splitter = legacy.SplitContext(mem)
ev = word_eval.CompletionWordEvaluator(mem, exec_opts, splitter)
status_out = completion.StatusOutput(status_lines, exec_opts)
completion.Init(pool, builtin.BUILTIN_DEF, mem, funcs, comp_lookup,
status_out, ev)
return InteractiveLoop(opts, ex, c_parser, w_parser, line_reader)
else:
# Parse the whole thing up front
#print('Parsing file')
_tlog('ParseWholeFile')
# TODO: Do I need ParseAndEvalLoop? How is it different than
# InteractiveLoop?
try:
node = c_parser.ParseWholeFile()
except util.ParseError as e:
ui.PrettyPrintError(e, arena, sys.stderr)
print('parse error: %s' % e.UserErrorString(), file=sys.stderr)
return 2
else:
# TODO: Remove this older form of error handling.
if not node:
err = c_parser.Error()
assert err, err # can't be empty
ui.PrintErrorStack(err, arena, sys.stderr)
return 2 # parse error is code 2
do_exec = True
if opts.fix:
#log('SPANS: %s', arena.spans)
osh2oil.PrintAsOil(arena, node, opts.debug_spans)
do_exec = False
if exec_opts.noexec:
do_exec = False
# Do this after parsing the entire file. There could be another option to
# do it before exiting runtime?
if opts.parser_mem_dump:
# This might be superstition, but we want to let the value stabilize
# after parsing. bash -c 'cat /proc/$$/status' gives different results
# with a sleep.
time.sleep(0.001)
input_path = '/proc/%d/status' % os.getpid()
with open(input_path) as f, open(opts.parser_mem_dump, 'w') as f2:
contents = f.read()
f2.write(contents)
log('Wrote %s to %s (--parser-mem-dump)', input_path,
opts.parser_mem_dump)
# -n prints AST, --show-ast prints and executes
if exec_opts.noexec or opts.show_ast:
if opts.ast_format == 'none':
print('AST not printed.', file=sys.stderr)
elif opts.ast_format == 'oheap':
# TODO: Make this a separate flag?
if sys.stdout.isatty():
raise RuntimeError(
'ERROR: Not dumping binary data to a TTY.')
f = sys.stdout
enc = encode.Params()
out = encode.BinOutput(f)
encode.EncodeRoot(node, enc, out)
else: # text output
f = sys.stdout
if opts.ast_format in ('text', 'abbrev-text'):
ast_f = fmt.DetectConsoleOutput(f)
elif opts.ast_format in ('html', 'abbrev-html'):
ast_f = fmt.HtmlOutput(f)
else:
raise AssertionError
abbrev_hook = (ast_lib.AbbreviateNodes
if 'abbrev-' in opts.ast_format else None)
tree = fmt.MakeTree(node, abbrev_hook=abbrev_hook)
ast_f.FileHeader()
fmt.PrintTree(tree, ast_f)
ast_f.FileFooter()
ast_f.write('\n')
#util.log("Execution skipped because 'noexec' is on ")
status = 0
if do_exec:
_tlog('Execute(node)')
status = ex.ExecuteAndRunExitTrap(node)
# NOTE: 'exit 1' is ControlFlow and gets here, but subshell/commandsub
# don't because they call sys.exit().
if opts.runtime_mem_dump:
# This might be superstition, but we want to let the value stabilize
# after parsing. bash -c 'cat /proc/$$/status' gives different results
# with a sleep.
time.sleep(0.001)
input_path = '/proc/%d/status' % os.getpid()
with open(input_path) as f, open(opts.runtime_mem_dump,
'w') as f2:
contents = f.read()
f2.write(contents)
log('Wrote %s to %s (--runtime-mem-dump)', input_path,
opts.runtime_mem_dump)
else:
status = 0
return status
def _RunBuiltin(self, builtin_id, argv, span_id):
# NOTE: Builtins don't need to know their own name.
argv = argv[1:]
# TODO: figure out a quicker dispatch mechanism. Just make a table of
# builtins I guess.
if builtin_id == builtin_e.EXEC:
status = self._Exec(argv) # may never return
# But if it returns, then we want to permanently apply the redirects
# associated with it.
self.fd_state.MakePermanent()
elif builtin_id == builtin_e.READ:
status = builtin.Read(argv, self.splitter, self.mem)
elif builtin_id == builtin_e.ECHO:
status = builtin.Echo(argv)
elif builtin_id == builtin_e.SHIFT:
status = builtin.Shift(argv, self.mem)
elif builtin_id == builtin_e.CD:
status = builtin.Cd(argv, self.mem, self.dir_stack)
elif builtin_id == builtin_e.SET:
status = builtin.Set(argv, self.exec_opts, self.mem)
elif builtin_id == builtin_e.SHOPT:
status = builtin.Shopt(argv, self.exec_opts)
elif builtin_id == builtin_e.UNSET:
status = builtin.Unset(argv, self.mem, self.funcs)
elif builtin_id == builtin_e.EXPORT:
status = builtin.Export(argv, self.mem)
elif builtin_id == builtin_e.WAIT:
status = builtin.Wait(argv, self.waiter, self.job_state, self.mem)
elif builtin_id == builtin_e.JOBS:
status = builtin.Jobs(argv, self.job_state)
elif builtin_id == builtin_e.PUSHD:
status = builtin.Pushd(argv, self.mem.GetVar('HOME'), self.dir_stack)
elif builtin_id == builtin_e.POPD:
status = builtin.Popd(argv, self.mem.GetVar('HOME'), self.dir_stack)
elif builtin_id == builtin_e.DIRS:
status = builtin.Dirs(argv, self.mem.GetVar('HOME'), self.dir_stack)
elif builtin_id == builtin_e.PWD:
status = builtin.Pwd(argv, self.mem)
elif builtin_id in (builtin_e.SOURCE, builtin_e.DOT):
status = self._Source(argv)
elif builtin_id == builtin_e.TRAP:
status = builtin.Trap(argv, self.traps, self.nodes_to_run, self)
elif builtin_id == builtin_e.UMASK:
status = builtin.Umask(argv)
elif builtin_id == builtin_e.EVAL:
status = self._Eval(argv, span_id)
elif builtin_id == builtin_e.COMPLETE:
status = comp_builtins.Complete(argv, self, self.comp_lookup)
elif builtin_id == builtin_e.COMPGEN:
status = comp_builtins.CompGen(argv, self)
elif builtin_id == builtin_e.COMPOPT:
status = comp_builtins.CompOpt(argv)
elif builtin_id == builtin_e.COLON: # special builtin like 'true'
status = 0
elif builtin_id == builtin_e.TRUE:
status = 0
elif builtin_id == builtin_e.FALSE:
status = 1
elif builtin_id == builtin_e.TEST:
status = test_builtin.Test(argv, False)
elif builtin_id == builtin_e.BRACKET:
status = test_builtin.Test(argv, True) # need_right_bracket
elif builtin_id == builtin_e.GETOPTS:
status = builtin.GetOpts(argv, self.mem)
elif builtin_id == builtin_e.COMMAND:
path = self.mem.GetVar('PATH')
status = builtin.Command(argv, self.funcs, path)
elif builtin_id == builtin_e.TYPE:
path = self.mem.GetVar('PATH')
status = builtin.Type(argv, self.funcs, path)
elif builtin_id in (builtin_e.DECLARE, builtin_e.TYPESET):
# These are synonyms
status = builtin.DeclareTypeset(argv, self.mem, self.funcs)
elif builtin_id == builtin_e.ALIAS:
status = builtin.Alias(argv, self.aliases)
elif builtin_id == builtin_e.UNALIAS:
status = builtin.UnAlias(argv, self.aliases)
elif builtin_id == builtin_e.HELP:
loader = util.GetResourceLoader()
status = builtin.Help(argv, loader)
elif builtin_id == builtin_e.REPR:
status = builtin.Repr(argv, self.mem)
else:
raise AssertionError('Unhandled builtin: %s' % builtin_id)
assert isinstance(status, int)
return status
def OshMain(argv, login_shell):
spec = args.FlagsAndOptions()
spec.ShortFlag('-c', args.Str, quit_parsing_flags=True) # command string
spec.ShortFlag('-i') # interactive
# TODO: -h too
spec.LongFlag('--help')
spec.LongFlag('--version')
spec.LongFlag('--ast-format',
['text', 'abbrev-text', 'html', 'abbrev-html', 'oheap'],
default='abbrev-text')
spec.LongFlag('--show-ast') # execute and show
spec.LongFlag('--fix')
spec.LongFlag('--debug-spans')
spec.LongFlag('--print-status')
spec.LongFlag(
'--trace',
['cmd-parse', 'word-parse', 'lexer']) # NOTE: can only trace one now
spec.LongFlag('--hijack-shebang')
builtin.AddOptionsToArgSpec(spec)
try:
opts, opt_index = spec.Parse(argv)
except args.UsageError as e:
util.usage(str(e))
return 2
if opts.help:
loader = util.GetResourceLoader() # TOOD: Use Global
builtin.Help(['osh-usage'], loader)
return 0
if opts.version:
# OSH version is the only binary in Oil right now, so it's all one version.
_ShowVersion()
return 0
trace_state = util.TraceState()
if 'cmd-parse' == opts.trace:
util.WrapMethods(cmd_parse.CommandParser, trace_state)
if 'word-parse' == opts.trace:
util.WrapMethods(word_parse.WordParser, trace_state)
if 'lexer' == opts.trace:
util.WrapMethods(lexer.Lexer, trace_state)
if opt_index == len(argv):
dollar0 = sys.argv[0] # e.g. bin/osh
else:
dollar0 = argv[opt_index] # the script name, or the arg after -c
# TODO: Create a --parse action or 'osh parse' or 'oil osh-parse'
# osh-fix
# It uses a different memory-management model. It's a batch program and not
# an interactive program.
pool = alloc.Pool()
arena = pool.NewArena()
# TODO: Maybe wrap this initialization sequence up in an oil_State, like
# lua_State.
status_lines = ui.MakeStatusLines()
mem = state.Mem(dollar0, argv[opt_index + 1:], os.environ)
funcs = {}
# Passed to Executor for 'complete', and passed to completion.Init
if completion:
comp_lookup = completion.CompletionLookup()
else:
# TODO: NullLookup?
comp_lookup = None
exec_opts = state.ExecOpts()
builtin.SetExecOpts(exec_opts, opts.opt_changes)
# TODO: How to get a handle to initialized builtins here?
# tokens.py has it. I think you just make a separate table, with
# metaprogramming.
ex = cmd_exec.Executor(mem, status_lines, funcs, completion, comp_lookup,
exec_opts, arena)
# NOTE: The rc file can contain both commands and functions... ideally we
# would only want to save nodes/lines for the functions.
try:
rc_path = 'oilrc'
arena.PushSource(rc_path)
with open(rc_path) as f:
rc_line_reader = reader.FileLineReader(f, arena=arena)
_, rc_c_parser = parse_lib.MakeParser(rc_line_reader, arena)
try:
rc_node = rc_c_parser.ParseWholeFile()
if not rc_node:
# TODO: Error should return a token, and then the token should have a
# arena index, and then look that up in the arena.
err = rc_c_parser.Error()
ui.PrintErrorStack(err, arena, sys.stderr)
return 2 # parse error is code 2
finally:
arena.PopSource()
status = ex.Execute(rc_node)
#print('oilrc:', status, cflow, file=sys.stderr)
# Ignore bad status?
except IOError as e:
if e.errno != errno.ENOENT:
raise
if opts.c is not None:
arena.PushSource('<command string>')
line_reader = reader.StringLineReader(opts.c, arena=arena)
interactive = False
elif opts.i: # force interactive
arena.PushSource('<stdin -i>')
line_reader = reader.InteractiveLineReader(OSH_PS1, arena=arena)
interactive = True
else:
try:
script_name = argv[opt_index]
except IndexError:
if sys.stdin.isatty():
arena.PushSource('<interactive>')
line_reader = reader.InteractiveLineReader(OSH_PS1,
arena=arena)
interactive = True
else:
arena.PushSource('<stdin>')
line_reader = reader.FileLineReader(sys.stdin, arena=arena)
interactive = False
else:
arena.PushSource(script_name)
# TODO: Does this open file descriptor need to be moved beyond 3..9 ?
# Yes! See dash input.c setinputfile. It calls savefd().
# TODO: It also needs to be closed later.
try:
f = open(script_name)
except IOError as e:
util.error("Couldn't open %r: %s", script_name,
os.strerror(e.errno))
return 1
line_reader = reader.FileLineReader(f, arena=arena)
interactive = False
# TODO: assert arena.NumSourcePaths() == 1
# TODO: .rc file needs its own arena.
w_parser, c_parser = parse_lib.MakeParser(line_reader, arena)
if interactive:
# NOTE: We're using a different evaluator here. The completion system can
# also run functions... it gets the Executor through Executor._Complete.
if HAVE_READLINE:
ev = word_eval.CompletionWordEvaluator(mem, exec_opts)
status_out = completion.StatusOutput(status_lines, exec_opts)
completion.Init(builtin.BUILTIN_DEF, mem, funcs, comp_lookup,
status_out, ev)
# TODO: Could instantiate "printer" instead of showing ops
InteractiveLoop(opts, ex, c_parser, w_parser, line_reader)
status = 0 # TODO: set code
else:
# Parse the whole thing up front
#print('Parsing file')
tlog('ParseWholeFile')
# TODO: Do I need ParseAndEvalLoop? How is it different than
# InteractiveLoop?
try:
node = c_parser.ParseWholeFile()
except util.ParseError as e:
ui.PrettyPrintError(e, arena, sys.stderr)
print('parse error: %s' % e.UserErrorString(), file=sys.stderr)
return 2
else:
# TODO: Remove this older form of error handling.
if not node:
err = c_parser.Error()
ui.PrintErrorStack(err, arena, sys.stderr)
return 2 # parse error is code 2
do_exec = True
if opts.fix:
osh2oil.PrintAsOil(arena, node, opts.debug_spans)
do_exec = False
if exec_opts.noexec:
do_exec = False
if exec_opts.noexec or opts.show_ast: # -n shows the AST
if opts.ast_format == 'oheap':
# TODO: Make this a separate flag?
if sys.stdout.isatty():
raise RuntimeError(
'ERROR: Not dumping binary data to a TTY.')
f = sys.stdout
enc = encode.Params()
out = encode.BinOutput(f)
encode.EncodeRoot(node, enc, out)
else: # text output
f = sys.stdout
if opts.ast_format in ('text', 'abbrev-text'):
ast_f = fmt.DetectConsoleOutput(f)
elif opts.ast_format in ('html', 'abbrev-html'):
ast_f = fmt.HtmlOutput(f)
else:
raise AssertionError
abbrev_hook = (ast.AbbreviateNodes
if 'abbrev-' in opts.ast_format else None)
tree = fmt.MakeTree(node, abbrev_hook=abbrev_hook)
ast_f.FileHeader()
fmt.PrintTree(tree, ast_f)
ast_f.FileFooter()
ast_f.write('\n')
#util.log("Execution skipped because 'noexec' is on ")
status = 0
if do_exec:
tlog('Execute(node)')
status = ex.Execute(node)
else:
status = 0
return status
def _RunBuiltin(self, builtin_id, argv):
restore_fd_state = True
# NOTE: Builtins don't need to know their own name.
argv = argv[1:]
# TODO: figure out a quicker dispatch mechanism. Just make a table of
# builtins I guess.
if builtin_id == EBuiltin.EXEC:
status = self._Exec(argv) # may never return
# But if it returns, then we want to permanently apply the redirects
# associated with it.
self.fd_state.MakePermanent()
elif builtin_id == EBuiltin.READ:
status = builtin.Read(argv, self.mem)
elif builtin_id == EBuiltin.ECHO:
status = builtin.Echo(argv)
elif builtin_id == EBuiltin.SHIFT:
status = builtin.Shift(argv, self.mem)
elif builtin_id == EBuiltin.CD:
status = builtin.Cd(argv, self.mem)
elif builtin_id == EBuiltin.SET:
status = builtin.Set(argv, self.exec_opts, self.mem)
elif builtin_id == EBuiltin.SHOPT:
status = builtin.Shopt(argv, self.exec_opts)
elif builtin_id == EBuiltin.UNSET:
status = builtin.Unset(argv, self.mem, self.funcs)
elif builtin_id == EBuiltin.EXPORT:
status = builtin.Export(argv, self.mem)
elif builtin_id == EBuiltin.EXIT:
status = builtin.Exit(argv)
elif builtin_id == EBuiltin.WAIT:
status = builtin.Wait(argv, self.waiter, self.job_state, self.mem)
elif builtin_id == EBuiltin.JOBS:
status = builtin.Jobs(argv, self.job_state)
elif builtin_id == EBuiltin.PUSHD:
status = builtin.Pushd(argv, self.dir_stack)
elif builtin_id == EBuiltin.POPD:
status = builtin.Popd(argv, self.dir_stack)
elif builtin_id == EBuiltin.DIRS:
status = builtin.Dirs(argv, self.dir_stack)
elif builtin_id in (EBuiltin.SOURCE, EBuiltin.DOT):
status = self._Source(argv)
elif builtin_id == EBuiltin.TRAP:
status = builtin.Trap(argv, self.traps)
elif builtin_id == EBuiltin.UMASK:
status = builtin.Umask(argv)
elif builtin_id == EBuiltin.EVAL:
status = self._Eval(argv)
elif builtin_id == EBuiltin.COMPLETE:
status = self._Complete(argv)
elif builtin_id == EBuiltin.COMPGEN:
status = self._CompGen(argv)
elif builtin_id == EBuiltin.COLON: # special builtin like 'true'
status = 0
elif builtin_id == EBuiltin.TRUE:
status = 0
elif builtin_id == EBuiltin.FALSE:
status = 1
elif builtin_id == EBuiltin.HELP:
loader = util.GetResourceLoader()
status = builtin.Help(argv, loader)
elif builtin_id == EBuiltin.DEBUG_LINE:
status = builtin.DebugLine(argv, self.status_lines)
else:
raise AssertionError('Unhandled builtin: %d' % builtin_id)
assert isinstance(status, int)
return status
def OshMain(argv0, argv, login_shell):
arg_r = args.Reader(argv)
try:
opts = OSH_SPEC.Parse(arg_r)
except args.UsageError as e:
ui.usage('osh usage error: %s', e)
return 2
if opts.help:
loader = util.GetResourceLoader()
builtin.Help(['osh-usage'], loader)
return 0
if opts.version:
# OSH version is the only binary in Oil right now, so it's all one version.
_ShowVersion()
return 0
# TODO: This should be in interactive mode only?
builtin.RegisterSigIntHandler()
if arg_r.AtEnd():
dollar0 = argv0
has_main = False
else:
dollar0 = arg_r.Peek() # the script name, or the arg after -c
has_main = True
pool = alloc.Pool()
arena = pool.NewArena()
# NOTE: has_main is only for ${BASH_SOURCE[@} and family. Could be a
# required arg.
mem = state.Mem(dollar0,
argv[arg_r.i + 1:],
posix.environ,
arena,
has_main=has_main)
funcs = {}
comp_lookup = completion.CompletionLookup()
fd_state = process.FdState()
exec_opts = state.ExecOpts(mem, readline)
builtin.SetExecOpts(exec_opts, opts.opt_changes)
aliases = {} # feedback between runtime and parser
parse_ctx = parse_lib.ParseContext(arena, aliases)
if opts.debug_file:
debug_f = util.DebugFile(fd_state.Open(opts.debug_file, mode='w'))
else:
debug_f = util.NullDebugFile()
debug_f.log('Debug file is %s', opts.debug_file)
# Controlled by env variable, flag, or hook?
dumper = dev.CrashDumper(posix.environ.get('OSH_CRASH_DUMP_DIR', ''))
if opts.xtrace_to_debug_file:
trace_f = debug_f
else:
trace_f = util.DebugFile(sys.stderr)
devtools = dev.DevTools(dumper, debug_f, trace_f)
ex = cmd_exec.Executor(mem, fd_state, funcs, comp_lookup, exec_opts,
parse_ctx, devtools)
# NOTE: The rc file can contain both commands and functions... ideally we
# would only want to save nodes/lines for the functions.
try:
rc_path = 'oilrc'
arena.PushSource(rc_path)
with open(rc_path) as f:
rc_line_reader = reader.FileLineReader(f, arena)
_, rc_c_parser = parse_ctx.MakeParser(rc_line_reader)
try:
status = main_loop.Batch(ex, rc_c_parser, arena)
finally:
arena.PopSource()
except IOError as e:
if e.errno != errno.ENOENT:
raise
# Needed in non-interactive shells for @P
prompt = ui.Prompt(arena, parse_ctx, ex)
ui.PROMPT = prompt
if opts.c is not None:
arena.PushSource('<command string>')
line_reader = reader.StringLineReader(opts.c, arena)
if opts.i: # -c and -i can be combined
exec_opts.interactive = True
elif opts.i: # force interactive
arena.PushSource('<stdin -i>')
line_reader = reader.InteractiveLineReader(arena, prompt)
exec_opts.interactive = True
else:
try:
script_name = arg_r.Peek()
except IndexError:
if sys.stdin.isatty():
arena.PushSource('<interactive>')
line_reader = reader.InteractiveLineReader(arena, prompt)
exec_opts.interactive = True
else:
arena.PushSource('<stdin>')
line_reader = reader.FileLineReader(sys.stdin, arena)
else:
arena.PushSource(script_name)
try:
f = fd_state.Open(script_name)
except OSError as e:
util.error("Couldn't open %r: %s", script_name,
posix.strerror(e.errno))
return 1
line_reader = reader.FileLineReader(f, arena)
# TODO: assert arena.NumSourcePaths() == 1
# TODO: .rc file needs its own arena.
w_parser, c_parser = parse_ctx.MakeParser(line_reader)
if exec_opts.interactive:
# NOTE: We're using a different evaluator here. The completion system can
# also run functions... it gets the Executor through Executor._Complete.
if HAVE_READLINE:
splitter = legacy.SplitContext(mem) # TODO: share with executor.
ev = word_eval.CompletionWordEvaluator(mem, exec_opts, splitter,
arena)
progress_f = ui.StatusLine()
var_action = completion.VariablesActionInternal(ex.mem)
root_comp = completion.RootCompleter(ev, comp_lookup, var_action,
parse_ctx, progress_f,
debug_f)
completion.Init(readline, root_comp, debug_f)
_InitDefaultCompletions(ex, comp_lookup)
return main_loop.Interactive(opts, ex, c_parser, arena)
# TODO: Remove this after removing it from benchmarks/osh-runtime. It's no
# longer relevant with main_loop.
if opts.parser_mem_dump:
# This might be superstition, but we want to let the value stabilize
# after parsing. bash -c 'cat /proc/$$/status' gives different results
# with a sleep.
time.sleep(0.001)
input_path = '/proc/%d/status' % posix.getpid()
with open(input_path) as f, open(opts.parser_mem_dump, 'w') as f2:
contents = f.read()
f2.write(contents)
log('Wrote %s to %s (--parser-mem-dump)', input_path,
opts.parser_mem_dump)
nodes_out = [] if exec_opts.noexec else None
_tlog('Execute(node)')
status = main_loop.Batch(ex, c_parser, arena, nodes_out=nodes_out)
if nodes_out is not None:
ui.PrintAst(nodes_out, opts)
# NOTE: 'exit 1' is ControlFlow and gets here, but subshell/commandsub
# don't because they call sys.exit().
if opts.runtime_mem_dump:
# This might be superstition, but we want to let the value stabilize
# after parsing. bash -c 'cat /proc/$$/status' gives different results
# with a sleep.
time.sleep(0.001)
input_path = '/proc/%d/status' % posix.getpid()
with open(input_path) as f, open(opts.runtime_mem_dump, 'w') as f2:
contents = f.read()
f2.write(contents)
log('Wrote %s to %s (--runtime-mem-dump)', input_path,
opts.runtime_mem_dump)
# NOTE: We haven't closed the file opened with fd_state.Open
return status
