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1# raw_file.h
2
3
4## **Overview**
5
6**Related Modules:**
7
8[Rawfile](rawfile.md)
9
10**Description:**
11
12提供rawfile文件相关功能
13
14功能包括搜索、读取和关闭rawfile文件
15
16**Since:**
178
18**Version:**
191.0
20
21## **Summary**
22
23
24### Classes
25
26  | Classe Name | Description |
27| -------- | -------- |
28| [RawFileDescriptor](_raw_file_descriptor.md) | 提供rawfile文件描述符信息 |
29
30
31### Typedefs
32
33  | Typedef Name | Description |
34| -------- | -------- |
35| [RawFile](rawfile.md#gacf2dc23017812d7daf535b80f1a6ab27) | typedef&nbsp;struct&nbsp;[RawFile](rawfile.md#gacf2dc23017812d7daf535b80f1a6ab27)<br/>提供对rawfile的访问功能 |
36
37
38### Functions
39
40  | Function | Description |
41| -------- | -------- |
42| [OH_ResourceManager_ReadRawFile](rawfile.md#ga2958ba7372ae1232365358115a82c219)&nbsp;(const&nbsp;[RawFile](rawfile.md#gacf2dc23017812d7daf535b80f1a6ab27)&nbsp;\*rawFile,&nbsp;void&nbsp;\*buf,&nbsp;size_t&nbsp;length) | int<br/>读取rawfile |
43| [OH_ResourceManager_SeekRawFile](rawfile.md#ga7fc0d124fd184498b0a0bfad3454f45c)&nbsp;(const&nbsp;[RawFile](rawfile.md#gacf2dc23017812d7daf535b80f1a6ab27)&nbsp;\*rawFile,&nbsp;long&nbsp;offset,&nbsp;int&nbsp;whence) | int<br/>基于指定的offset，在rawfile文件内搜索读写数据的位置 |
44| [OH_ResourceManager_GetRawFileSize](rawfile.md#gafcc6036360466ab5193b7b4eba5eae50)&nbsp;([RawFile](rawfile.md#gacf2dc23017812d7daf535b80f1a6ab27)&nbsp;\*rawFile) | long<br/>获取rawfile长度，单位为int32_t |
45| [OH_ResourceManager_CloseRawFile](rawfile.md#ga5cccee53550670a2111705d56a1d427b)&nbsp;([RawFile](rawfile.md#gacf2dc23017812d7daf535b80f1a6ab27)&nbsp;\*rawFile) | void<br/>关闭已打开的[RawFile](rawfile.md#gacf2dc23017812d7daf535b80f1a6ab27)&nbsp;以及释放所有相关联资源 |
46| [OH_ResourceManager_GetRawFileOffset](rawfile.md#ga57dc379d6df6b7c7f8e76303ad4957a4)&nbsp;(const&nbsp;[RawFile](rawfile.md#gacf2dc23017812d7daf535b80f1a6ab27)&nbsp;\*rawFile) | long<br/>获取rawfile当前的offset，单位为int32_t |
47| [OH_ResourceManager_GetRawFileDescriptor](rawfile.md#ga8313a7d4bb361a98ced485346a9be4b1)&nbsp;(const&nbsp;[RawFile](rawfile.md#gacf2dc23017812d7daf535b80f1a6ab27)&nbsp;\*rawFile,&nbsp;[RawFileDescriptor](_raw_file_descriptor.md)&nbsp;&amp;descriptor) | bool<br/>基于offset(单位为int32_t)和文件长度打开rawfile，并获取rawfile文件描述符 |
48| [OH_ResourceManager_ReleaseRawFileDescriptor](rawfile.md#gabf9db7f05088a11cc311a6ef890eda6b)&nbsp;(const&nbsp;[RawFileDescriptor](_raw_file_descriptor.md)&nbsp;&amp;descriptor) | bool<br/>关闭rawfile文件描述符 |
49