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author | Jari Vetoniemi <jari.vetoniemi@indooratlas.com> | 2020-03-16 18:49:26 +0900 |
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committer | Jari Vetoniemi <jari.vetoniemi@indooratlas.com> | 2020-03-30 00:39:06 +0900 |
commit | fcbf63e62c627deae76c1b8cb8c0876c536ed811 (patch) | |
tree | 64cb17de3f41a2b6fef2368028fbd00349946994 /jni/ruby/ext/pty/lib/expect.rb |
Fresh start
Diffstat (limited to 'jni/ruby/ext/pty/lib/expect.rb')
-rw-r--r-- | jni/ruby/ext/pty/lib/expect.rb | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/jni/ruby/ext/pty/lib/expect.rb b/jni/ruby/ext/pty/lib/expect.rb new file mode 100644 index 0000000..c3f3925 --- /dev/null +++ b/jni/ruby/ext/pty/lib/expect.rb @@ -0,0 +1,71 @@ +$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 = '' + 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).chr + elsif !IO.select([self],nil,nil,timeout) or eof? then + result = nil + @unusedBuf = buf + break + else + c = getc.chr + end + buf << c + if $expect_verbose + STDOUT.print c + STDOUT.flush + end + if mat=e_pat.match(buf) then + result = [buf,*mat.to_a[1..-1]] + break + end + end + if block_given? then + yield result + else + return result + end + nil + end +end + |