/
string.go
82 lines (68 loc) · 2.09 KB
/
string.go
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package gojs
// #include <stdlib.h>
// #include <JavaScriptCore/JSStringRef.h>
import "C"
import (
"syscall"
"unsafe"
)
//=========================================================
// StringRef
//
type String struct {
}
func NewString(value string) *String {
cvalue := C.CString(value)
defer C.free(unsafe.Pointer(cvalue))
ref := C.JSStringCreateWithUTF8CString(cvalue)
return (*String)(unsafe.Pointer(ref))
}
func newStringFromRef(ref C.JSStringRef) *String {
return (*String)(unsafe.Pointer(ref))
}
func (ref *String) Retain() {
C.JSStringRetain((C.JSStringRef)(unsafe.Pointer(ref)))
}
func (ref *String) Release() {
C.JSStringRelease((C.JSStringRef)(unsafe.Pointer(ref)))
}
func (ref *String) String() string {
// Conversion 1, null-terminate UTF-8 string
len := C.JSStringGetMaximumUTF8CStringSize((C.JSStringRef)(unsafe.Pointer(ref)))
buffer := C.malloc(len)
if buffer == nil {
panic(syscall.ENOMEM)
}
defer C.free(buffer)
C.JSStringGetUTF8CString((C.JSStringRef)(unsafe.Pointer(ref)), (*C.char)(buffer), len)
// Conversion 2, Go string
ret := C.GoString((*C.char)(buffer))
return ret
}
// Bytes returns a byte slice with the bytes of this string.
func (ref *String) Bytes() []byte {
// Conversion 1, null-terminate UTF-8 string
len := C.JSStringGetMaximumUTF8CStringSize((C.JSStringRef)(unsafe.Pointer(ref)))
buffer := C.malloc(len)
if buffer == nil {
panic(syscall.ENOMEM)
}
defer C.free(buffer)
strlenWithNul := C.JSStringGetUTF8CString((C.JSStringRef)(unsafe.Pointer(ref)), (*C.char)(buffer), len)
// Conversion 2, Go []byte
return C.GoBytes(buffer, C.int(strlenWithNul-1))
}
func (ref *String) Length() uint32 {
ret := C.JSStringGetLength((C.JSStringRef)(unsafe.Pointer(ref)))
return uint32(ret)
}
func (ref *String) Equal(rhs *String) bool {
ret := C.JSStringIsEqual((C.JSStringRef)(unsafe.Pointer(ref)), (C.JSStringRef)(unsafe.Pointer(rhs)))
return bool(ret)
}
func (ref *String) EqualToString(rhs string) bool {
crhs := C.CString(rhs)
defer C.free(unsafe.Pointer(crhs))
ret := C.JSStringIsEqualToUTF8CString((C.JSStringRef)(unsafe.Pointer(ref)), crhs)
return bool(ret)
}