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[Feature #21785] [DOC] LEB128 support

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Nobuyoshi Nakada 2025-12-19 17:16:15 +09:00
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doc/language/packed_data.rdoc
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@ -342,6 +342,22 @@ for one element in the input or output array.
s.unpack('U*')
# => [4194304]
- <tt>'r'</tt> - Signed LEB128-encoded integer
(see {Signed LEB128}[https://en.wikipedia.org/wiki/LEB128#Signed_LEB128])
s = [1, 127, -128, 16383, -16384].pack("r*")
# => "\x01\xFF\x00\x80\x7F\xFF\xFF\x00\x80\x80\x7F"
s.unpack('r*')
# => [1, 127, -128, 16383, -16384]
- <tt>'R'</tt> - Unsigned LEB128-encoded integer
(see {Unsigned LEB128}[https://en.wikipedia.org/wiki/LEB128#Unsigned_LEB128])
s = [1, 127, 128, 16383, 16384].pack("R*")
# => "\x01\x7F\x80\x01\xFF\x7F\x80\x80\x01"
s.unpack('R*')
# => [1, 127, 128, 16383, 16384]
- <tt>'w'</tt> - BER-encoded integer
(see {BER encoding}[https://en.wikipedia.org/wiki/X.690#BER_encoding]):