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package aci
// #include "aci.go.h"
import "C"
import (
"unsafe"
)
// getInt64 gets int64 from pointer
func getInt64(p unsafe.Pointer) int64 {
return int64(*(*C.sb8)(p))
}
// getUint64 gets uint64 from pointer
func getUint64(p unsafe.Pointer) uint64 {
return uint64(*(*C.sb8)(p))
}
// cByte converts byte slice to OraText.
// must be freed
func cByte(b []byte) *C.OraText {
p := C.malloc(C.size_t(len(b)))
pp := (*[1 << 30]byte)(p)
copy(pp[:], b)
return (*C.OraText)(p)
}
// cByteN converts byte slice to C OraText with size.
// must be freed
func cByteN(b []byte, size int) *C.OraText {
p := C.malloc(C.size_t(size))
pp := (*[1 << 30]byte)(p)
copy(pp[:], b)
return (*C.OraText)(p)
}
// cString coverts string to C OraText.
// must be freed
func cString(s string) *C.OraText {
p := C.malloc(C.size_t(len(s) + 1))
pp := (*[1 << 30]byte)(p)
copy(pp[:], s)
pp[len(s)] = 0
return (*C.OraText)(p)
}
// cStringN coverts string to C OraText with size.
// must be freed
func cStringN(s string, size int) *C.OraText {
p := C.malloc(C.size_t(size))
pp := (*[1 << 30]byte)(p)
copy(pp[:], s)
if len(s) < size {
pp[len(s)] = 0
} else {
pp[size-1] = 0
}
return (*C.OraText)(p)
}
// CGoStringN coverts C OraText to Go string
func cGoStringN(s *C.OraText, size int) string {
if size == 0 {
return ""
}
p := (*[1 << 30]byte)(unsafe.Pointer(s))
buf := make([]byte, size)
copy(buf, p[:])
return *(*string)(unsafe.Pointer(&buf))
}
// freeDefines frees defines
func freeDefines(defines []defineStruct) {
for i := 0; i < len(defines); i++ {
if len(defines[i].subDefines) > 0 {
freeDefines(defines[i].subDefines)
}
defines[i].subDefines = nil
if defines[i].pbuf != nil {
freeBuffer(defines[i].pbuf, defines[i].dataType)
defines[i].pbuf = nil
}
if defines[i].length != nil {
C.free(unsafe.Pointer(defines[i].length))
defines[i].length = nil
}
if defines[i].indicator != nil {
C.free(unsafe.Pointer(defines[i].indicator))
defines[i].indicator = nil
}
defines[i].defineHandle = nil // should be freed by oci statement close
}
}
// freeBinds frees binds
func freeBinds(binds []bindStruct) {
for _, bind := range binds {
if bind.pbuf != nil {
freeBuffer(bind.pbuf, bind.dataType)
bind.pbuf = nil
}
if bind.length != nil {
C.free(unsafe.Pointer(bind.length))
bind.length = nil
}
if bind.indicator != nil {
C.free(unsafe.Pointer(bind.indicator))
bind.indicator = nil
}
bind.bindHandle = nil // freed by oci statement close
}
}
// freeBuffer calles OCIDescriptorFree to free double pointer to buffer
// or calles C free to free pointer to buffer
func freeBuffer(buffer unsafe.Pointer, dataType C.ub2) {
switch dataType {
case C.SQLT_CLOB, C.SQLT_BLOB:
C.OCIDescriptorFree(*(*unsafe.Pointer)(buffer), C.OCI_DTYPE_LOB)
case C.SQLT_TIMESTAMP:
C.OCIDescriptorFree(*(*unsafe.Pointer)(buffer), C.OCI_DTYPE_TIMESTAMP)
case C.SQLT_TIMESTAMP_TZ:
C.OCIDescriptorFree(*(*unsafe.Pointer)(buffer), C.OCI_DTYPE_TIMESTAMP_TZ)
case C.SQLT_TIMESTAMP_LTZ:
C.OCIDescriptorFree(*(*unsafe.Pointer)(buffer), C.OCI_DTYPE_TIMESTAMP_LTZ)
case C.SQLT_INTERVAL_DS:
C.OCIDescriptorFree(*(*unsafe.Pointer)(buffer), C.OCI_DTYPE_INTERVAL_DS)
case C.SQLT_INTERVAL_YM:
C.OCIDescriptorFree(*(*unsafe.Pointer)(buffer), C.OCI_DTYPE_INTERVAL_YM)
case C.SQLT_RSET:
C.OCIDescriptorFree(*(*unsafe.Pointer)(buffer), C.OCI_HTYPE_STMT)
default:
C.free(buffer)
}
}
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