mirror of https://github.com/hashicorp/consul
106 lines
2.4 KiB
Go
106 lines
2.4 KiB
Go
package ole
|
|
|
|
import "unsafe"
|
|
|
|
// NewVariant returns new variant based on type and value.
|
|
func NewVariant(vt VT, val int64) VARIANT {
|
|
return VARIANT{VT: vt, Val: val}
|
|
}
|
|
|
|
// ToIUnknown converts Variant to Unknown object.
|
|
func (v *VARIANT) ToIUnknown() *IUnknown {
|
|
if v.VT != VT_UNKNOWN {
|
|
return nil
|
|
}
|
|
return (*IUnknown)(unsafe.Pointer(uintptr(v.Val)))
|
|
}
|
|
|
|
// ToIDispatch converts variant to dispatch object.
|
|
func (v *VARIANT) ToIDispatch() *IDispatch {
|
|
if v.VT != VT_DISPATCH {
|
|
return nil
|
|
}
|
|
return (*IDispatch)(unsafe.Pointer(uintptr(v.Val)))
|
|
}
|
|
|
|
// ToArray converts variant to SafeArray helper.
|
|
func (v *VARIANT) ToArray() *SafeArrayConversion {
|
|
if v.VT != VT_SAFEARRAY {
|
|
if v.VT&VT_ARRAY == 0 {
|
|
return nil
|
|
}
|
|
}
|
|
var safeArray *SafeArray = (*SafeArray)(unsafe.Pointer(uintptr(v.Val)))
|
|
return &SafeArrayConversion{safeArray}
|
|
}
|
|
|
|
// ToString converts variant to Go string.
|
|
func (v *VARIANT) ToString() string {
|
|
if v.VT != VT_BSTR {
|
|
return ""
|
|
}
|
|
return BstrToString(*(**uint16)(unsafe.Pointer(&v.Val)))
|
|
}
|
|
|
|
// Clear the memory of variant object.
|
|
func (v *VARIANT) Clear() error {
|
|
return VariantClear(v)
|
|
}
|
|
|
|
// Value returns variant value based on its type.
|
|
//
|
|
// Currently supported types: 2- and 4-byte integers, strings, bools.
|
|
// Note that 64-bit integers, datetimes, and other types are stored as strings
|
|
// and will be returned as strings.
|
|
//
|
|
// Needs to be further converted, because this returns an interface{}.
|
|
func (v *VARIANT) Value() interface{} {
|
|
switch v.VT {
|
|
case VT_I1:
|
|
return int8(v.Val)
|
|
case VT_UI1:
|
|
return uint8(v.Val)
|
|
case VT_I2:
|
|
return int16(v.Val)
|
|
case VT_UI2:
|
|
return uint16(v.Val)
|
|
case VT_I4:
|
|
return int32(v.Val)
|
|
case VT_UI4:
|
|
return uint32(v.Val)
|
|
case VT_I8:
|
|
return int64(v.Val)
|
|
case VT_UI8:
|
|
return uint64(v.Val)
|
|
case VT_INT:
|
|
return int(v.Val)
|
|
case VT_UINT:
|
|
return uint(v.Val)
|
|
case VT_INT_PTR:
|
|
return uintptr(v.Val) // TODO
|
|
case VT_UINT_PTR:
|
|
return uintptr(v.Val)
|
|
case VT_R4:
|
|
return *(*float32)(unsafe.Pointer(&v.Val))
|
|
case VT_R8:
|
|
return *(*float64)(unsafe.Pointer(&v.Val))
|
|
case VT_BSTR:
|
|
return v.ToString()
|
|
case VT_DATE:
|
|
// VT_DATE type will either return float64 or time.Time.
|
|
d := float64(v.Val)
|
|
date, err := GetVariantDate(d)
|
|
if err != nil {
|
|
return d
|
|
}
|
|
return date
|
|
case VT_UNKNOWN:
|
|
return v.ToIUnknown()
|
|
case VT_DISPATCH:
|
|
return v.ToIDispatch()
|
|
case VT_BOOL:
|
|
return v.Val != 0
|
|
}
|
|
return nil
|
|
}
|