Change to not use unsafe package

Closes #1

da.go

@@ -86,6 +86,23 @@ func (da *doubleArray) Lookup(path string) (length int) {
 	return -1
 }
 
+func (da *doubleArray) LookupByBytes(path []byte) (length int) {
+	idx := 1
+	tmpIdx := idx
+	for i := 0; i < len(path); i++ {
+		c := path[i]
+		tmpIdx = da.nextIndex(da.bc[tmpIdx].Base(), c)
+		if tmpIdx >= len(da.bc) || da.bc[tmpIdx].Check() != c {
+			break
+		}
+		idx = tmpIdx
+	}
+	if next := da.nextIndex(da.bc[idx].Base(), terminationCharacter); next < len(da.bc) && da.bc[next].Check() == terminationCharacter {
+		return da.node[da.bc[next].Base()]
+	}
+	return -1
+}
+
 func (da *doubleArray) build(srcs []record, idx, depth int, usedBase map[int]struct{}) error {
 	sort.Stable(recordSlice(srcs))
 	base, siblings, leaf, err := da.arrange(srcs, idx, depth, usedBase)

strings.go

@@ -4,7 +4,6 @@ import (
 	"sync"
 	"unicode"
 	"unicode/utf8"
-	"unsafe"
 )
 
 var (
@@ -80,7 +79,7 @@ func ToUpperCamelCase(s string) string {
 					initialism = append(initialism, runeBuf[:n]...)
 				}
 			}
-			if length := commonInitialism.Lookup(*(*string)(unsafe.Pointer(&initialism))); length > 0 {
+			if length := commonInitialism.LookupByBytes(initialism); length > 0 {
 				result = append(result[:start], initialism...)
 			}
 			start = len(result)
@@ -113,7 +112,7 @@ func ToUpperCamelCase(s string) string {
 			initialism = append(initialism, runeBuf[:n]...)
 		}
 	}
-	if length := commonInitialism.Lookup(*(*string)(unsafe.Pointer(&initialism))); length > 0 {
+	if length := commonInitialism.LookupByBytes(initialism); length > 0 {
 		result = append(result[:start], initialism...)
 	}
 	return string(result)
@@ -140,7 +139,7 @@ func ToUpperCamelCaseASCII(s string) string {
 			for _, b := range candidate {
 				initialism = append(initialism, toUpperASCII(b))
 			}
-			if length := commonInitialism.Lookup(*(*string)(unsafe.Pointer(&initialism))); length > 0 {
+			if length := commonInitialism.LookupByBytes(initialism); length > 0 {
 				result = append(result[:start], initialism...)
 			}
 			start = len(result)
@@ -158,7 +157,7 @@ func ToUpperCamelCaseASCII(s string) string {
 	for _, b := range candidate {
 		initialism = append(initialism, toUpperASCII(b))
 	}
-	if length := commonInitialism.Lookup(*(*string)(unsafe.Pointer(&initialism))); length > 0 {
+	if length := commonInitialism.LookupByBytes(initialism); length > 0 {
 		result = append(result[:start], initialism...)
 	}
 	return string(result)