io.rb: add IO#readbyte; ref #5389

2026-06-08 16:11:16 +00:00 · 2021-04-10 19:04:58 +09:00
parent 167e0b3f4f
commit 8fa1ff9a03
2 changed files with 6 additions and 1 deletions
@@ -77,7 +77,7 @@ Add the line below to your build configuration.
 | IO#puts                    |    o     |      |
 | IO#read                    |    o     |      |
 | IO#read_nonblock           |          |      |
-| IO#readbyte                |          |      |
+| IO#readbyte                |    o     |      |
 | IO#readchar                |    o     |      |
 | IO#readline                |    o     |      |
 | IO#readlines               |    o     |      |
@@ -299,6 +299,11 @@ class IO
    end
  end

+  def readbyte
+    _read_buf
+    IO._bufread(@buf, 1).getbyte(0)
+  end
+
  def getbyte
    ret = getc
    return ret.getbyte 0 if ret