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38 lines
1.0 KiB
Markdown
38 lines
1.0 KiB
Markdown
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## data\_writer\_file\_t
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### 概述
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基于文件实现的 data_writer。通过 data_writer_factory 创建 writer 时，URL的格式如下：
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```
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file://filename
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```
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----------------------------------
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### 函数
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<p id="data_writer_file_t_methods">
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| 函数名称 | 说明 |
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| -------- | ------------ |
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| <a href="#data_writer_file_t_data_writer_file_create">data\_writer\_file\_create</a> | 创建基于文件的data writer。 |
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#### data\_writer\_file\_create 函数
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-----------------------
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* 函数功能：
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> <p id="data_writer_file_t_data_writer_file_create">创建基于文件的data writer。
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> 不要直接调用，而是注册到 data\_writer\_factory后，通过data\_writer\_factory调用
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* 函数原型：
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```
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data_writer_t* data_writer_file_create (const char* filename);
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```
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* 参数说明：
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| 参数 | 类型 | 说明 |
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| -------- | ----- | --------- |
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| 返回值 | data\_writer\_t* | 返回data writer对象。 |
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| filename | const char* | 文件名。 |
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