Merge pull request #4 from shogo82148/use-string-header

use reflect.StringHeader
shogo82148 · Dec 31, 2018 · fed2fcf · fed2fcf
2 parents 6eae0bf + a840019
commit fed2fcf
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Showing 2 changed files with 10 additions and 3 deletions.
diff --git a/lattice.go b/lattice.go
@@ -5,6 +5,7 @@ package mecab
 import "C"
 import (
 	"errors"
+	"reflect"
 	"unsafe"
 )
 
@@ -59,7 +60,9 @@ func (l Lattice) SetSentence(s string) {
 	if s == "" {
 		s = "dummy"
 	}
-	input := *(**C.char)(unsafe.Pointer(&s))
+	header := (*reflect.StringHeader)(unsafe.Pointer(&s))
+	input := (*C.char)(unsafe.Pointer(header.Data))
+
 	C.mecab_lattice_add_request_type(l.lattice, 64) // MECAB_ALLOCATE_SENTENCE = 64
 	C.mecab_lattice_set_sentence2(l.lattice, input, length)
 }

diff --git a/mecab.go b/mecab.go
@@ -7,6 +7,7 @@ import "C"
 import (
 	"errors"
 	"fmt"
+	"reflect"
 	"unsafe"
 )
 
@@ -59,7 +60,9 @@ func (m MeCab) Parse(s string) (string, error) {
 	if s == "" {
 		s = "dummy"
 	}
-	input := *(**C.char)(unsafe.Pointer(&s))
+	header := (*reflect.StringHeader)(unsafe.Pointer(&s))
+	input := (*C.char)(unsafe.Pointer(header.Data))
+
 	result := C.mecab_sparse_tostr2(m.mecab, input, length)
 	if result == nil {
 		return "", m.Error()
@@ -86,7 +89,8 @@ func (m MeCab) ParseToNode(s string) (Node, error) {
 	if s == "" {
 		s = "dummy"
 	}
-	input := *(**C.char)(unsafe.Pointer(&s))
+	header := (*reflect.StringHeader)(unsafe.Pointer(&s))
+	input := (*C.char)(unsafe.Pointer(header.Data))
 
 	node := C.mecab_sparse_tonode2(m.mecab, input, length)
 	if node == nil {