1e41f4b71Sopenharmony_ci# Fileuri 2e41f4b71Sopenharmony_ci 3e41f4b71Sopenharmony_ci 4e41f4b71Sopenharmony_ci## 概述 5e41f4b71Sopenharmony_ci 6e41f4b71Sopenharmony_ci文件统一资源标识符(File Uniform Resource Identifier),支持fileuri与路径path的转换、有效性校验、以及指向的变换(指向的文件或路径)。 7e41f4b71Sopenharmony_ci 8e41f4b71Sopenharmony_ci**系统能力:** SystemCapability.FileManagement.AppFileService 9e41f4b71Sopenharmony_ci 10e41f4b71Sopenharmony_ci**起始版本:** 12 11e41f4b71Sopenharmony_ci 12e41f4b71Sopenharmony_ci 13e41f4b71Sopenharmony_ci## 汇总 14e41f4b71Sopenharmony_ci 15e41f4b71Sopenharmony_ci 16e41f4b71Sopenharmony_ci### 文件 17e41f4b71Sopenharmony_ci 18e41f4b71Sopenharmony_ci| 名称 | 描述 | 19e41f4b71Sopenharmony_ci| -------- | -------- | 20e41f4b71Sopenharmony_ci| [oh_file_uri.h](oh__file__uri_8h.md) | 提供uri和路径path之间的相互转换,目录uri获取,以及URi的有效性校验的方法。 | 21e41f4b71Sopenharmony_ci 22e41f4b71Sopenharmony_ci 23e41f4b71Sopenharmony_ci### 函数 24e41f4b71Sopenharmony_ci 25e41f4b71Sopenharmony_ci| 名称 | 描述 | 26e41f4b71Sopenharmony_ci|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------| 27e41f4b71Sopenharmony_ci| [FileManagement_ErrCode](_file_i_o.md#filemanagement_errcode) [OH_FileUri_GetUriFromPath](#oh_fileuri_geturifrompath) (const char \*path, unsigned int length, char \*\*result) | 将传入的路径path转换成uri。 | 28e41f4b71Sopenharmony_ci| [FileManagement_ErrCode](_file_i_o.md#filemanagement_errcode) [OH_FileUri_GetPathFromUri](#oh_fileuri_getpathfromuri) (const char \*uri, unsigned int length, char \*\*result) | 将传入的uri转换成路径path。 | 29e41f4b71Sopenharmony_ci| [FileManagement_ErrCode](_file_i_o.md#filemanagement_errcode) [OH_FileUri_GetFullDirectoryUri](#oh_fileuri_getfulldirectoryuri) (const char \*uri, unsigned int length, char \*\*result) | 获取uri所在目录的uri,如果是文件uri则获取父目录的uri,如果是目录uri则返回本身。 | 30e41f4b71Sopenharmony_ci| bool [OH_FileUri_IsValidUri](#oh_fileuri_isvaliduri) (const char \*uri, unsigned int length) | 校验传入的uri是否有效。 | 31e41f4b71Sopenharmony_ci| [FileManagement_ErrCode](_file_i_o.md#filemanagement_errcode) [OH_FileUri_GetFileName](#oh_fileuri_getfilename) (const char \*uri, unsigned int length, char \*\*result) | 获取传入uri中的文件名称。 | 32e41f4b71Sopenharmony_ci 33e41f4b71Sopenharmony_ci## 函数说明 34e41f4b71Sopenharmony_ci 35e41f4b71Sopenharmony_ci 36e41f4b71Sopenharmony_ci### OH_FileUri_GetFullDirectoryUri() 37e41f4b71Sopenharmony_ci 38e41f4b71Sopenharmony_ci``` 39e41f4b71Sopenharmony_ciFileManagement_ErrCode OH_FileUri_GetFullDirectoryUri (const char * uri, unsigned int length, char ** result ) 40e41f4b71Sopenharmony_ci``` 41e41f4b71Sopenharmony_ci 42e41f4b71Sopenharmony_ci**描述** 43e41f4b71Sopenharmony_ci 44e41f4b71Sopenharmony_ci获取uri所在目录的uri,如果是文件uri则获取父目录的uri,如果是目录uri则返回本身。 45e41f4b71Sopenharmony_ci 46e41f4b71Sopenharmony_ci**系统能力:** SystemCapability.FileManagement.AppFileService 47e41f4b71Sopenharmony_ci 48e41f4b71Sopenharmony_ci**起始版本:** 12 49e41f4b71Sopenharmony_ci 50e41f4b71Sopenharmony_ci**参数:** 51e41f4b71Sopenharmony_ci 52e41f4b71Sopenharmony_ci| 名称 | 描述 | 53e41f4b71Sopenharmony_ci| -------- | -------- | 54e41f4b71Sopenharmony_ci| uri | 表示要获取目录的uri的原始uri。 | 55e41f4b71Sopenharmony_ci| length | 表示原始uri的字节长度。 | 56e41f4b71Sopenharmony_ci| result | 表示获取到的目录URi, 需要使用standard library标准库的free()方法释放申请的资源。 | 57e41f4b71Sopenharmony_ci 58e41f4b71Sopenharmony_ci**返回:** 59e41f4b71Sopenharmony_ci 60e41f4b71Sopenharmony_ci返回特定的错误码值,详细信息可以查看[FileManagement_ErrCode](_file_i_o.md#filemanagement_errcode)。 61e41f4b71Sopenharmony_ci 62e41f4b71Sopenharmony_ci 63e41f4b71Sopenharmony_ci### OH_FileUri_GetPathFromUri() 64e41f4b71Sopenharmony_ci 65e41f4b71Sopenharmony_ci``` 66e41f4b71Sopenharmony_ciFileManagement_ErrCode OH_FileUri_GetPathFromUri (const char * uri, unsigned int length, char ** result ) 67e41f4b71Sopenharmony_ci``` 68e41f4b71Sopenharmony_ci 69e41f4b71Sopenharmony_ci**描述** 70e41f4b71Sopenharmony_ci 71e41f4b71Sopenharmony_ci将传入的uri转换成路径path。 72e41f4b71Sopenharmony_ci 73e41f4b71Sopenharmony_ci**系统能力:** SystemCapability.FileManagement.AppFileService 74e41f4b71Sopenharmony_ci 75e41f4b71Sopenharmony_ci**起始版本:** 12 76e41f4b71Sopenharmony_ci 77e41f4b71Sopenharmony_ci**参数:** 78e41f4b71Sopenharmony_ci 79e41f4b71Sopenharmony_ci| 名称 | 描述 | 80e41f4b71Sopenharmony_ci| -------- | -------- | 81e41f4b71Sopenharmony_ci| uri | 表示要转换的uri。 | 82e41f4b71Sopenharmony_ci| length | 表示要转换uri的字节长度。 | 83e41f4b71Sopenharmony_ci| result | 表示转换后的路径path. 需要使用standard library标准库的free()方法释放申请的资源。 | 84e41f4b71Sopenharmony_ci 85e41f4b71Sopenharmony_ci**返回:** 86e41f4b71Sopenharmony_ci 87e41f4b71Sopenharmony_ci返回特定的错误码值,详细信息可以查看[FileManagement_ErrCode](_file_i_o.md#filemanagement_errcode)。 88e41f4b71Sopenharmony_ci 89e41f4b71Sopenharmony_ci 90e41f4b71Sopenharmony_ci### OH_FileUri_GetUriFromPath() 91e41f4b71Sopenharmony_ci 92e41f4b71Sopenharmony_ci``` 93e41f4b71Sopenharmony_ciFileManagement_ErrCode OH_FileUri_GetUriFromPath (const char * path, unsigned int length, char ** result ) 94e41f4b71Sopenharmony_ci``` 95e41f4b71Sopenharmony_ci 96e41f4b71Sopenharmony_ci**描述** 97e41f4b71Sopenharmony_ci 98e41f4b71Sopenharmony_ci将传入的路径path转换成uri。 99e41f4b71Sopenharmony_ci 100e41f4b71Sopenharmony_ci**系统能力:** SystemCapability.FileManagement.AppFileService 101e41f4b71Sopenharmony_ci 102e41f4b71Sopenharmony_ci**起始版本:** 12 103e41f4b71Sopenharmony_ci 104e41f4b71Sopenharmony_ci**参数:** 105e41f4b71Sopenharmony_ci 106e41f4b71Sopenharmony_ci| 名称 | 描述 | 107e41f4b71Sopenharmony_ci| -------- | -------- | 108e41f4b71Sopenharmony_ci| path | 表示要转换的路径。 | 109e41f4b71Sopenharmony_ci| length | 表示要转换路径的字节长度。 | 110e41f4b71Sopenharmony_ci| result | 表示转换后的uri, 需要使用standard library标准库的free()方法释放申请的资源。 | 111e41f4b71Sopenharmony_ci 112e41f4b71Sopenharmony_ci**返回:** 113e41f4b71Sopenharmony_ci 114e41f4b71Sopenharmony_ci返回特定的错误码值,详细信息可以查看[FileManagement_ErrCode](_file_i_o.md#filemanagement_errcode)。 115e41f4b71Sopenharmony_ci 116e41f4b71Sopenharmony_ci 117e41f4b71Sopenharmony_ci### OH_FileUri_IsValidUri() 118e41f4b71Sopenharmony_ci 119e41f4b71Sopenharmony_ci``` 120e41f4b71Sopenharmony_cibool OH_FileUri_IsValidUri (const char * uri, unsigned int length ) 121e41f4b71Sopenharmony_ci``` 122e41f4b71Sopenharmony_ci 123e41f4b71Sopenharmony_ci**描述** 124e41f4b71Sopenharmony_ci 125e41f4b71Sopenharmony_ci校验传入的uri是否有效。 126e41f4b71Sopenharmony_ci 127e41f4b71Sopenharmony_ci**系统能力:** SystemCapability.FileManagement.AppFileService 128e41f4b71Sopenharmony_ci 129e41f4b71Sopenharmony_ci**起始版本:** 12 130e41f4b71Sopenharmony_ci 131e41f4b71Sopenharmony_ci**参数:** 132e41f4b71Sopenharmony_ci 133e41f4b71Sopenharmony_ci| 名称 | 描述 | 134e41f4b71Sopenharmony_ci| -------- | -------- | 135e41f4b71Sopenharmony_ci| uri | 表示需要校验的uri。 | 136e41f4b71Sopenharmony_ci| length | 需要校验uri的字节长度。 | 137e41f4b71Sopenharmony_ci 138e41f4b71Sopenharmony_ci**返回:** 139e41f4b71Sopenharmony_ci 140e41f4b71Sopenharmony_ci返回true表示传入uri是有效的uri;返回false表示传入的uri是无效的uri。 141e41f4b71Sopenharmony_ci 142e41f4b71Sopenharmony_ci### OH_FileUri_GetFileName() 143e41f4b71Sopenharmony_ci 144e41f4b71Sopenharmony_ci``` 145e41f4b71Sopenharmony_ciFileManagement_ErrCode OH_FileUri_GetFileName (const char * uri, unsigned int length, char ** result ) 146e41f4b71Sopenharmony_ci``` 147e41f4b71Sopenharmony_ci 148e41f4b71Sopenharmony_ci**描述** 149e41f4b71Sopenharmony_ci 150e41f4b71Sopenharmony_ci获取传入的uri中的文件名称。 151e41f4b71Sopenharmony_ci 152e41f4b71Sopenharmony_ci**系统能力:** SystemCapability.FileManagement.AppFileService 153e41f4b71Sopenharmony_ci 154e41f4b71Sopenharmony_ci**起始版本:** 13 155e41f4b71Sopenharmony_ci 156e41f4b71Sopenharmony_ci**参数:** 157e41f4b71Sopenharmony_ci 158e41f4b71Sopenharmony_ci| 名称 | 描述 | 159e41f4b71Sopenharmony_ci| -------- |------------------------------------------------------| 160e41f4b71Sopenharmony_ci| uri | 表示传入的uri。 | 161e41f4b71Sopenharmony_ci| length | 表示传入uri的字节长度。 | 162e41f4b71Sopenharmony_ci| result | 表示获取到的文件名称. 需要使用standard library标准库的free()方法释放申请的资源。 | 163e41f4b71Sopenharmony_ci 164e41f4b71Sopenharmony_ci**返回:** 165e41f4b71Sopenharmony_ci 166e41f4b71Sopenharmony_ci返回特定的错误码值,详细信息可以查看[FileManagement_ErrCode](_file_i_o.md#filemanagement_errcode)。