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ruby--ruby/ext/pty/lib/expect.rb

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# frozen_string_literal: true
$expect_verbose = false
# Expect library adds the IO instance method #expect, which does similar act to
# tcl's expect extension.
#
# In order to use this method, you must require expect:
#
# require 'expect'
#
# Please see #expect for usage.
class IO
# call-seq:
# IO#expect(pattern,timeout=9999999) -> Array
# IO#expect(pattern,timeout=9999999) { |result| ... } -> nil
#
# Reads from the IO until the given +pattern+ matches or the +timeout+ is over.
#
# It returns an array with the read buffer, followed by the matches.
# If a block is given, the result is yielded to the block and returns nil.
#
# When called without a block, it waits until the input that matches the
# given +pattern+ is obtained from the IO or the time specified as the
# timeout passes. An array is returned when the pattern is obtained from the
# IO. The first element of the array is the entire string obtained from the
# IO until the pattern matches, followed by elements indicating which the
# pattern which matched to the anchor in the regular expression.
#
# The optional timeout parameter defines, in seconds, the total time to wait
# for the pattern. If the timeout expires or eof is found, nil is returned
# or yielded. However, the buffer in a timeout session is kept for the next
# expect call. The default timeout is 9999999 seconds.
def expect(pat,timeout=9999999)
buf = ''.dup
case pat
when String
e_pat = Regexp.new(Regexp.quote(pat))
when Regexp
e_pat = pat
else
raise TypeError, "unsupported pattern class: #{pat.class}"
end
@unusedBuf ||= ''
while true
if not @unusedBuf.empty?
c = @unusedBuf.slice!(0)
elsif !IO.select([self],nil,nil,timeout) or eof? then
result = nil
@unusedBuf = buf
break
else
c = getc
end
buf << c
if $expect_verbose
STDOUT.print c
STDOUT.flush
end
if mat=e_pat.match(buf) then
result = [buf,*mat.captures]
break
end
end
* error.c (exc_exception): clone the receiver exception instead of creating brand new exception object of the receiver. * eval.c (rb_eval_string_wrap): extend new ruby_top_self, not original self. * eval.c (rb_eval_cmd): respect ruby_wrapper if set. * eval.c (eval): do not update ruby_class unless scope is not provided. * eval.c (eval): preserve wrapper information. * eval.c (proc_invoke): ditto. * eval.c (block_pass): ditto. * parse.y (void_expr): too much warnings for void context (e.g. foo[1] that can be mere Proc call). * error.c (rb_name_error): new function to raise NameError with name attribute set. * eval.c (rb_f_missing): set name and args in the exception object. [new] * error.c (name_name): NameError#name - new method. * error.c (nometh_args): NoMethodError#args - new method. * lex.c (rb_reserved_word): lex_state after tRESCUE should be EXPR_MID. * gc.c (add_heap): allocation size of the heap unit is doubled for each allocation. * dir.c (isdelim): space, tab, and newline are no longer delimiters for glob patterns. * eval.c (svalue_to_avalue): new conversion scheme between single value and array values. * eval.c (avalue_to_svalue): ditto. * eval.c (rb_eval): REXPAND now uses avalue_to_svalue(), return and yield too. * eval.c (rb_yield_0): use avalue_to_svalue(). * eval.c (proc_invoke): Proc#call gives avaules, whereas Proc#yield gives mvalues. * eval.c (bmcall): convert given value (svalue) to avalue. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@1555 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2001-07-02 04:46:28 -04:00
if block_given? then
yield result
else
return result
end
nil
end
end