def Run(self, cmd_val):
# type: (cmd_value__Argv) -> int
attrs, arg_r = flag_spec.ParseCmdVal('read', cmd_val)
arg = arg_types.read(attrs.attrs)
names = arg_r.Rest()
fd = self.stdin.fileno()
if arg.t >= 0.0:
if arg.t != 0.0:
e_die("read -t isn't implemented (except t=0)")
else:
return 0 if pyos.InputAvailable(fd) else 1
bits = 0
if self.stdin.isatty():
bits |= pyos.TERM_ICANON
if arg.s: # silent
bits |= pyos.TERM_ECHO
if arg.p is not None: # only if tty
mylib.Stderr().write(arg.p)
if bits == 0:
status = self._Read(arg, names)
else:
term = pyos.TermState(fd, ~bits)
try:
status = self._Read(arg, names)
finally:
term.Restore()
return status
def Run(self, cmd_val):
# type: (cmd_value__Argv) -> int
attrs, arg_r = flag_spec.ParseCmdVal('read', cmd_val)
arg = arg_types.read(attrs.attrs)
names = arg_r.Rest()
if arg.n >= 0: # read a certain number of bytes (-1 means unset)
if len(names):
name = names[0]
else:
name = 'REPLY' # default variable name
status = 0
stdin_fd = self.stdin.fileno()
if self.stdin.isatty(): # set stdin to read in unbuffered mode
s = passwd.ReadBytesFromTerminal(stdin_fd, arg.n)
else:
chunks = [] # type: List[str]
n = arg.n
while n > 0:
chunk = posix.read(stdin_fd, n) # read at up to N chars
if len(chunk) == 0:
break
chunks.append(chunk)
n -= len(chunk)
s = ''.join(chunks)
# DIdn't read all the bytes we wanted
if len(s) != n:
status = 1
state.SetStringDynamic(self.mem, name, s)
# NOTE: Even if we don't get n bytes back, there is no error?
return status
if len(names) == 0:
names.append('REPLY')
# leftover words assigned to the last name
if arg.a is not None:
max_results = 0 # no max
else:
max_results = len(names)
if arg.d is not None:
if len(arg.d):
delim_char = arg.d[0]
else:
delim_char = '\0' # -d '' delimits by NUL
else:
delim_char = '\n' # read a line
# We have to read more than one line if there is a line continuation (and
# it's not -r).
parts = [] # type: List[mylib.BufWriter]
join_next = False
status = 0
while True:
line, eof = ReadLineFromStdin(delim_char)
if eof:
# status 1 to terminate loop. (This is true even though we set
# variables).
status = 1
#log('LINE %r', line)
if len(line) == 0:
break
spans = self.splitter.SplitForRead(line, not arg.r)
done, join_next = _AppendParts(line, spans, max_results, join_next,
parts)
#log('PARTS %s continued %s', parts, continued)
if done:
break
entries = [buf.getvalue() for buf in parts]
num_parts = len(entries)
if arg.a is not None:
state.SetArrayDynamic(self.mem, arg.a, entries)
else:
for i in xrange(max_results):
if i < num_parts:
s = entries[i]
else:
s = '' # if there are too many variables
#log('read: %s = %s', names[i], s)
state.SetStringDynamic(self.mem, names[i], s)
return status
def Run(self, cmd_val):
# type: (cmd_value__Argv) -> int
attrs, arg_r = flag_spec.ParseCmdVal('read', cmd_val)
arg = arg_types.read(attrs.attrs)
names = arg_r.Rest()
# Don't respect any of the other options here? This is buffered I/O.
if arg.line: # read --line
var_name, var_spid = arg_r.Peek2()
if var_name is None:
var_name = '_line'
else:
if var_name.startswith(':'): # optional : sigil
var_name = var_name[1:]
arg_r.Next()
next_arg, next_spid = arg_r.Peek2()
if next_arg is not None:
raise error.Usage('got extra argument', span_id=next_spid)
return self._Line(arg, var_name)
if arg.q:
e_usage('--qsn can only be used with --line')
if arg.all: # read --all
var_name, var_spid = arg_r.Peek2()
if var_name is None:
var_name = '_all'
else:
if var_name.startswith(':'): # optional : sigil
var_name = var_name[1:]
arg_r.Next()
next_arg, next_spid = arg_r.Peek2()
if next_arg is not None:
raise error.Usage('got extra argument', span_id=next_spid)
return self._All(var_name)
if arg.q:
e_usage('--qsn not implemented yet')
fd = self.stdin.fileno()
if arg.t >= 0.0:
if arg.t != 0.0:
e_die("read -t isn't implemented (except t=0)")
else:
return 0 if pyos.InputAvailable(fd) else 1
bits = 0
if self.stdin.isatty():
bits |= pyos.TERM_ICANON
if arg.s: # silent
bits |= pyos.TERM_ECHO
if arg.p is not None: # only if tty
mylib.Stderr().write(arg.p)
if bits == 0:
status = self._Read(arg, names)
else:
term = pyos.TermState(fd, ~bits)
try:
status = self._Read(arg, names)
finally:
term.Restore()
return status