/
safearrayconversion.go
147 lines (125 loc) · 3.53 KB
/
safearrayconversion.go
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// Helper for converting SafeArray to array of objects.
package w32
import (
"syscall"
"unsafe"
)
type SafeArrayConversion struct {
Array *SafeArray
}
// TODO
/*
func (sac *SafeArrayConversion) ToStringArray() (strings []string) {
totalElements, _ := sac.TotalElements(0)
strings = make([]string, totalElements)
for i := int32(0); i < totalElements; i++ {
strings[i], _ = safeArrayGetElementString(sac.Array, i)
}
return
}
*/
func (sac *SafeArrayConversion) ToByteArray() (bytes []byte) {
totalElements, _ := sac.TotalElements(0)
bytes = make([]byte, totalElements)
for i := int32(0); i < totalElements; i++ {
_ = OleAutDll.SafeArrayGetElement(sac.Array, i, uintptr(unsafe.Pointer(&bytes[int32(i)])))
}
return
}
func (sac *SafeArrayConversion) ToValueArray() (values []interface{}) {
totalElements, _ := sac.TotalElements(0)
values = make([]interface{}, totalElements)
vt, _ := OleAutDll.SafeArrayGetVarType(sac.Array)
for i := int32(0); i < totalElements; i++ {
switch vt {
case VT_BOOL:
var v bool
_ = OleAutDll.SafeArrayGetElement(sac.Array, i, uintptr(unsafe.Pointer(&v)))
values[i] = v
case VT_I1:
var v int8
_ = OleAutDll.SafeArrayGetElement(sac.Array, i, uintptr(unsafe.Pointer(&v)))
values[i] = v
case VT_I2:
var v int16
_ = OleAutDll.SafeArrayGetElement(sac.Array, i, uintptr(unsafe.Pointer(&v)))
values[i] = v
case VT_I4:
var v int32
_ = OleAutDll.SafeArrayGetElement(sac.Array, i, uintptr(unsafe.Pointer(&v)))
values[i] = v
case VT_I8:
var v int64
_ = OleAutDll.SafeArrayGetElement(sac.Array, i, uintptr(unsafe.Pointer(&v)))
values[i] = v
case VT_UI1:
var v uint8
_ = OleAutDll.SafeArrayGetElement(sac.Array, i, uintptr(unsafe.Pointer(&v)))
values[i] = v
case VT_UI2:
var v uint16
_ = OleAutDll.SafeArrayGetElement(sac.Array, i, uintptr(unsafe.Pointer(&v)))
values[i] = v
case VT_UI4:
var v uint32
_ = OleAutDll.SafeArrayGetElement(sac.Array, i, uintptr(unsafe.Pointer(&v)))
values[i] = v
case VT_UI8:
var v uint64
_ = OleAutDll.SafeArrayGetElement(sac.Array, i, uintptr(unsafe.Pointer(&v)))
values[i] = v
case VT_R4:
var v float32
_ = OleAutDll.SafeArrayGetElement(sac.Array, i, uintptr(unsafe.Pointer(&v)))
values[i] = v
case VT_R8:
var v float64
_ = OleAutDll.SafeArrayGetElement(sac.Array, i, uintptr(unsafe.Pointer(&v)))
values[i] = v
/* TODO
case VT_BSTR:
v, _ := safeArrayGetElementString(sac.Array, i)
values[i] = v
*/
case VT_VARIANT:
var v VARIANT
_ = OleAutDll.SafeArrayGetElement(sac.Array, i, uintptr(unsafe.Pointer(&v)))
values[i] = v.Value()
v.Clear()
default:
// TODO
}
}
return
}
func (sac *SafeArrayConversion) GetType() (varType VT, err error) {
return OleAutDll.SafeArrayGetVarType(sac.Array)
}
func (sac *SafeArrayConversion) GetDimensions() uint32 {
return OleAutDll.SafeArrayGetDim(sac.Array)
}
func (sac *SafeArrayConversion) GetSize() uint32 {
return OleAutDll.SafeArrayGetElemSize(sac.Array)
}
func (sac *SafeArrayConversion) TotalElements(index uint32) (totalElements int32, errno syscall.Errno) {
if index < 1 {
index = 1
}
// Get array bounds
var LowerBounds int32
var UpperBounds int32
LowerBounds, errno = OleAutDll.SafeArrayGetLBound(sac.Array, index)
if errno != 0 {
return
}
UpperBounds, errno = OleAutDll.SafeArrayGetUBound(sac.Array, index)
if errno != 0 {
return
}
totalElements = UpperBounds - LowerBounds + 1
return
}
// Release Safe Array memory
func (sac *SafeArrayConversion) Release() {
OleAutDll.SafeArrayDestroy(sac.Array)
}