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turboactivate_windows.go
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turboactivate_windows.go
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// Copyright 2018 wyDay, LLC. All rights reserved.
// +build windows
package turboactivate // import "golang.wyday.com/turboactivate"
/*
#cgo CFLAGS: -I .
#include "TurboActivate.h"
*/
import "C"
import (
"unicode/utf16"
"unsafe"
)
// TAStrPtrType is the data type of string pointers that will be passed
// to the TurboActivate library on this particular platform.
type TAStrPtrType *C.WCHAR
// getTAStrPtr gets the cwstring on Windows.
func getTAStrPtr(s string) TAStrPtrType {
wstr := utf16.Encode([]rune(s))
p := C.calloc(C.size_t(len(wstr)+1), 2)
pp := (*[1 << 30]uint16)(p)
copy(pp[:], wstr)
return (TAStrPtrType)(p)
}
// getTAStrBufferPtr allocates and returns a buffer of the string length (including null)
func getTAStrBufferPtr(strLen C.size_t) TAStrPtrType {
p := C.calloc(strLen, 2)
return (TAStrPtrType)(p)
}
// stringFromTAStrPtr converts ptr to a Go string
func stringFromTAStrPtr(cwstr TAStrPtrType) string {
ptr := unsafe.Pointer(cwstr)
sz := C.wcslen((*C.wchar_t)(ptr))
wstr := (*[1<<30 - 1]uint16)(ptr)[:sz:sz]
return string(utf16.Decode(wstr))
}