Created
May 29, 2012 00:50
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Some implementations of SplitByte
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package split | |
import "bytes" | |
func CountByte(s []byte, c byte) int { | |
count := 0 | |
i := 0 | |
for i < len(s) { | |
if s[i] != c { | |
o := bytes.IndexByte(s[i:], c) | |
if o < 0 { | |
break | |
} | |
i += o | |
} | |
count++ | |
i++ | |
continue | |
} | |
return count | |
} | |
func SplitByte1(str []byte, sep byte) [][]byte { | |
start := 0 | |
na := 0 | |
n := CountByte(str, sep) + 1 | |
a := make([][]byte, n) | |
for i := 0; i < len(str) && na+1 < n; i++ { | |
if str[i] == sep { | |
a[na] = str[start : i] | |
na++ | |
start = i + 1 | |
} | |
} | |
a[na] = str[start:] | |
return a[0 : na+1] | |
} | |
func SplitByte2(s []byte, sep byte) [][]byte { | |
sep2 := []byte{sep}; | |
return genSplit(s, sep2, 0, -1) | |
} | |
func genSplit(s, sep []byte, sepSave, n int) [][]byte { | |
if n == 0 { | |
return nil | |
} | |
if n < 0 { | |
n = bytes.Count(s, sep) + 1 | |
} | |
c := sep[0] | |
start := 0 | |
a := make([][]byte, n) | |
na := 0 | |
for i := 0; i+len(sep) <= len(s) && na+1 < n; i++ { | |
if s[i] == c && (len(sep) == 1 || bytes.Equal(s[i:i+len(sep)], sep)) { | |
a[na] = s[start : i+sepSave] | |
na++ | |
start = i + len(sep) | |
i += len(sep) - 1 | |
} | |
} | |
a[na] = s[start:] | |
return a[0 : na+1] | |
} | |
func SplitByte3(s []byte, sep byte) [][]byte { | |
sep2 := []byte{sep}; | |
return bytes.Split(s, sep2) | |
} |
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