From 50b0ac29b852743325bd9d57b1660f2f90b6d3c4 Mon Sep 17 00:00:00 2001 From: Dimitri Sokolyuk Date: Tue, 30 Jun 2015 19:04:10 +0200 Subject: Split Base128 --- ber/base128.go | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 ber/base128.go (limited to 'ber/base128.go') diff --git a/ber/base128.go b/ber/base128.go new file mode 100644 index 0000000..7e44d76 --- /dev/null +++ b/ber/base128.go @@ -0,0 +1,32 @@ +package ber + +func base128(n int) (b []byte) { + if n == 0 { + return []byte{0} + } + l := 0 + for i := n; i > 0; i >>= 7 { + l++ + } + for i := l - 1; i >= 0; i-- { + o := byte(n >> uint(i*7)) + o &= 0x7F + if i != 0 { + o |= 0x80 + } + b = append(b, o) + } + return +} + +func debase128(b []byte) (i, n int) { + for _, v := range b { + i <<= 7 + i |= int(v & 0x7f) + n++ + if v & 0x80 == 0 { + return + } + } + return +} -- cgit v1.2.3