/
byteconv_helper.go
61 lines (51 loc) · 1.36 KB
/
byteconv_helper.go
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package main
//import "./dlug"
import "github.com/abeconnelly/dlug"
func byte_low( b byte ) byte {
if b >= 'A' && b <= 'Z' { return b+32 }
return b
}
// little endien encoding
func tobyte16(b []byte, u16 uint16) {
b[0] = byte(u16&0xff)
b[1] = byte((u16>>8)&0xff)
}
func tobyte32(b []byte, u32 uint32) {
b[0] = byte(u32&0xff)
b[1] = byte((u32>>8)&0xff)
b[2] = byte((u32>>16)&0xff)
b[3] = byte((u32>>24)&0xff)
}
func tobyte64(b []byte, u64 uint64) {
b[0] = byte(u64&0xff)
b[1] = byte((u64>>8)&0xff)
b[2] = byte((u64>>16)&0xff)
b[3] = byte((u64>>24)&0xff)
b[4] = byte((u64>>32)&0xff)
b[5] = byte((u64>>40)&0xff)
b[6] = byte((u64>>48)&0xff)
b[7] = byte((u64>>56)&0xff)
}
func byte2uint32(buf []byte) (u32 uint32) {
u32 = uint32(buf[0] & 0xff)
u32 += uint32(buf[1] & 0xff) << 8
u32 += uint32(buf[2] & 0xff) << 16
u32 += uint32(buf[3] & 0xff) << 24
return
}
func byte2uint64(buf []byte) (u64 uint64) {
u64 = uint64(buf[0] & 0xff)
u64 += uint64(buf[1] & 0xff) << 8
u64 += uint64(buf[2] & 0xff) << 16
u64 += uint64(buf[3] & 0xff) << 24
u64 += uint64(buf[4] & 0xff) << 32
u64 += uint64(buf[5] & 0xff) << 40
u64 += uint64(buf[6] & 0xff) << 48
u64 += uint64(buf[7] & 0xff) << 56
return
}
func byte2string(buf []byte) (string,int) {
sn,dn := dlug.ConvertUint64(buf)
s := string(buf[dn:sn+uint64(dn)])
return s, int(sn)+dn
}