harmony 鸿蒙raw_file.h
raw_file.h
Overview
Provides functions related to rawfiles, including searching for, reading, and closing rawfiles.
Since: 8
Related module: Rawfile
Summary
Structs
| Name | Description |
|---|---|
| struct RawFileDescriptor | Defines the file descriptor information of a file in the rawfile directory. |
| struct RawFileDescriptor64 | Defines the file descriptor of a large rawfile. |
Types
| Name | Description |
|---|---|
| typedef struct RawFile RawFile | Provides access to rawfiles. |
| typedef struct RawFile64 RawFile64 | Provides access to large rawfiles. |
Function
| Name | Description |
|---|---|
| int OH_ResourceManager_ReadRawFile (const RawFile *rawFile, void *buf, size_t length) | Reads data of the specified length from the current position in a rawfile. |
| int OH_ResourceManager_SeekRawFile (const RawFile *rawFile, long offset, int whence) | Searches for the data read/write position in a rawfile based on the specified offset. |
| long OH_ResourceManager_GetRawFileSize (RawFile *rawFile) | Obtains the length of the rawfile, in long. |
| long OH_ResourceManager_GetRawFileRemainingLength (const RawFile *rawFile) | Obtains the remaining length of the rawfile, in long. |
| void OH_ResourceManager_CloseRawFile (RawFile *rawFile) | Closes a RawFile and releases all associated resources. |
| long OH_ResourceManager_GetRawFileOffset (const RawFile *rawFile) | Obtains the current offset of a rawfile, in long. |
| bool OH_ResourceManager_GetRawFileDescriptor (const RawFile *rawFile, RawFileDescriptor &descriptor) | Opens a rawfile based on the specified offset (in long) and file length (in long) and obtains the file descriptor. |
| bool OH_ResourceManager_ReleaseRawFileDescriptor (const RawFileDescriptor &descriptor) | Releases a file descriptor. |
| bool OH_ResourceManager_ReleaseRawFileDescriptorData (const RawFileDescriptor *descriptor) | Releases a file descriptor. |
| int64_t OH_ResourceManager_ReadRawFile64 (const RawFile64 *rawFile, void *buf, int64_t length) | Reads data of the specified length from the current position in a large rawfile. |
| int OH_ResourceManager_SeekRawFile64 (const RawFile64 *rawFile, int64_t offset, int whence) | Searches for the data read/write position in a large rawfile based on the specified offset. |
| int64_t OH_ResourceManager_GetRawFileSize64 (RawFile64 *rawFile) | Obtains the length of a large rawfile, in int64_t. |
| int64_t OH_ResourceManager_GetRawFileRemainingLength64 (const RawFile64 *rawFile) | Obtains the remaining length of a large rawfile, in int64_t. |
| void OH_ResourceManager_CloseRawFile64 (RawFile64 *rawFile) | Closes a RawFile64 and releases all associated resources. |
| int64_t OH_ResourceManager_GetRawFileOffset64 (const RawFile64 *rawFile) | Obtains the offset of a large rawfile, in int64_t. |
| bool OH_ResourceManager_GetRawFileDescriptor64 (const RawFile64 *rawFile, RawFileDescriptor64 *descriptor) | Opens a large rawfile based on the specified offset (in int64_t) and file length (in int64_t) and obtains the file descriptor. |
| bool OH_ResourceManager_ReleaseRawFileDescriptor64 (const RawFileDescriptor64 *descriptor) | Releases a file descriptor. |
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