read_encrypted_itemT_read_encrypted_itemReadEncryptedItemReadEncryptedItemread_encrypted_item (算子)
名称
read_encrypted_itemT_read_encrypted_itemReadEncryptedItemReadEncryptedItemread_encrypted_item — 从文件中读取加密项。
签名
def read_encrypted_item(file_name: str) -> HHandle
描述
算子 read_encrypted_itemread_encrypted_itemReadEncryptedItemReadEncryptedItemReadEncryptedItemread_encrypted_item reads the file FileNameFileNameFileNameFileNamefileNamefile_name and
creates a new encrypted item in EncryptedItemHandleEncryptedItemHandleEncryptedItemHandleEncryptedItemHandleencryptedItemHandleencrypted_item_handle that is an
identical copy of the saved item. The file FileNameFileNameFileNameFileNamefileNamefile_name must have been
created by the operator write_encrypted_itemwrite_encrypted_itemWriteEncryptedItemWriteEncryptedItemWriteEncryptedItemwrite_encrypted_item。
The default HALCON file extension for encrypted item is '.henc'.
执行信息
- 多线程类型：可重入（与非独占算子并行运行）。
- 多线程作用域：全局（可从任何线程调用）。
- 未采用并行化处理。
此算子返回一个句柄。请注意，即使该句柄被用作特定算子的输入参数，这些算子仍可能改变此句柄类型的实例状态。
参数
FileNameFileNameFileNameFileNamefileNamefile_name (输入控制) filename.read → HTuplestrHTupleHtuple (string) (string) (HString) (char*)
Name of the file.
默认值：
'encrypted_item.henc'
"encrypted_item.henc"
"encrypted_item.henc"
"encrypted_item.henc"
"encrypted_item.henc"
"encrypted_item.henc"
File extension:
.bin
EncryptedItemHandleEncryptedItemHandleEncryptedItemHandleEncryptedItemHandleencryptedItemHandleencrypted_item_handle (输出控制) encrypted_item → HEncryptedItem, HTupleHHandleHTupleHtuple (handle) (IntPtr) (HHandle) (handle)
Handle of the encrypted item.
结果
算子 read_encrypted_itemread_encrypted_itemReadEncryptedItemReadEncryptedItemReadEncryptedItemread_encrypted_item 返回值 2 (
H_MSG_TRUE)
if the
named file was found and correctly read.否则，将抛出异常。
可能的后继
decrypt_serialized_itemdecrypt_serialized_itemDecryptSerializedItemDecryptSerializedItemDecryptSerializedItemdecrypt_serialized_item
另见
write_encrypted_itemwrite_encrypted_itemWriteEncryptedItemWriteEncryptedItemWriteEncryptedItemwrite_encrypted_item,
encrypt_serialized_itemencrypt_serialized_itemEncryptSerializedItemEncryptSerializedItemEncryptSerializedItemencrypt_serialized_item
模块
基础