31 lines
910 B
Go
31 lines
910 B
Go
|
package ascii
|
||
|
|
|
||
|
|
import (
|
||
|
|
"github.com/segmentio/asm/internal/unsafebytes"
|
||
|
|
)
|
||
|
|
|
||
|
|
// EqualFold is a version of bytes.EqualFold designed to work on ASCII input
|
||
|
|
// instead of UTF-8.
|
||
|
|
//
|
||
|
|
// When the program has guarantees that the input is composed of ASCII
|
||
|
|
// characters only, it allows for greater optimizations.
|
||
|
|
func EqualFold(a, b []byte) bool {
|
||
|
|
return EqualFoldString(unsafebytes.String(a), unsafebytes.String(b))
|
||
|
|
}
|
||
|
|
|
||
|
|
func HasPrefixFold(s, prefix []byte) bool {
|
||
|
|
return len(s) >= len(prefix) && EqualFold(s[:len(prefix)], prefix)
|
||
|
|
}
|
||
|
|
|
||
|
|
func HasSuffixFold(s, suffix []byte) bool {
|
||
|
|
return len(s) >= len(suffix) && EqualFold(s[len(s)-len(suffix):], suffix)
|
||
|
|
}
|
||
|
|
|
||
|
|
func HasPrefixFoldString(s, prefix string) bool {
|
||
|
|
return len(s) >= len(prefix) && EqualFoldString(s[:len(prefix)], prefix)
|
||
|
|
}
|
||
|
|
|
||
|
|
func HasSuffixFoldString(s, suffix string) bool {
|
||
|
|
return len(s) >= len(suffix) && EqualFoldString(s[len(s)-len(suffix):], suffix)
|
||
|
|
}
|