2022-08-23 10:12:36 +08:00
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## 文件系统扩展函数
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2021-01-13 14:40:14 +08:00
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2021-01-13 13:48:59 +08:00
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### 1.file\_read\_text
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2021-01-13 14:40:14 +08:00
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> 读取文本文件。
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----------------------------
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#### 原型
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2022-08-23 10:12:36 +08:00
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```js
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2021-01-13 14:40:14 +08:00
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file_read_text(filename) => str
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```
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2022-08-23 10:12:36 +08:00
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#### 示例
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```js
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file_read_text("test.txt");
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```
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2021-01-13 13:48:59 +08:00
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### 2.file\_read\_binary
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2021-01-13 14:40:14 +08:00
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> 读取二进制文件。
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----------------------------
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#### 原型
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2022-08-23 10:12:36 +08:00
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```js
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2021-01-13 14:40:14 +08:00
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file_read_binary(filename) => binary
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```
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2022-08-23 10:12:36 +08:00
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#### 示例
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```js
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2022-08-23 10:34:55 +08:00
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var a = file_read_binary("test.bin");
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2022-08-23 10:12:36 +08:00
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```
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2021-01-13 13:48:59 +08:00
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### 3.file\_write
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2021-01-13 14:40:14 +08:00
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> 写入文件。
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----------------------------
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#### 原型
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2022-08-23 10:12:36 +08:00
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```js
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2021-01-13 14:40:14 +08:00
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file_write(filename, str) => bool
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file_write(filename, binary) => bool
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file_write(filename, data, size) => bool
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```
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2022-08-23 10:12:36 +08:00
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#### 示例
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```js
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file_write("test.txt", "write str");
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```
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2021-09-09 15:10:12 +08:00
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### 4.file\_write\_append
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> 写入文件尾部(追加内容)。
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----------------------------
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#### 原型
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2022-08-23 10:12:36 +08:00
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```js
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2021-09-09 15:10:12 +08:00
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file_write_append(filename, str) => bool
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file_write_append(filename, binary) => bool
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file_write_append(filename, data, size) => bool
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```
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2022-08-23 10:12:36 +08:00
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#### 示例
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```js
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file_write_append("test.txt", "append str");
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```
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2021-09-09 15:10:12 +08:00
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### 5.file\_exist
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2021-01-13 14:40:14 +08:00
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> 检查文件是否存在。
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----------------------------
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#### 原型
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2022-08-23 10:12:36 +08:00
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```js
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2021-01-13 14:40:14 +08:00
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file_exist(filename) => bool
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```
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2022-08-23 10:12:36 +08:00
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#### 示例
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```js
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print(file_exist("test.txt"));
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```
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2021-09-09 15:10:12 +08:00
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### 6.file\_get\_size
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2021-01-13 14:40:14 +08:00
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> 获取文件大小。
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----------------------------
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#### 原型
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2022-08-23 10:12:36 +08:00
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```js
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2021-01-13 14:40:14 +08:00
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file_get_size(filename) => int32_t
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```
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2022-08-23 10:12:36 +08:00
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#### 示例
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```js
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print(file_get_size("test.txt"));
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```
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2021-09-09 15:10:12 +08:00
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### 7.file\_remove
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2021-01-13 14:40:14 +08:00
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> 删除指定的文件。
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----------------------------
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#### 原型
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2022-08-23 10:12:36 +08:00
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```js
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2021-01-13 14:40:14 +08:00
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file_remove(filename) => bool
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```
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2022-08-23 10:12:36 +08:00
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#### 示例
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```js
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file_remove("test.txt");
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```
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2021-09-09 15:10:12 +08:00
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### 8.file\_rename
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> 文件重命名。
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----------------------------
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#### 原型
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2022-08-23 10:12:36 +08:00
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```js
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2021-09-09 15:10:12 +08:00
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file_rename(filename, new_name) => bool
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```
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2022-08-23 10:12:36 +08:00
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#### 示例
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```js
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file_rename("test.txt","rename.txt");
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```
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2021-09-09 15:10:12 +08:00
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### 9.file\_copy
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> 文件拷贝。
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----------------------------
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#### 原型
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2022-08-23 10:12:36 +08:00
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```js
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2021-09-09 15:10:12 +08:00
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file_copy(filename, dst_name) => bool
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```
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2022-08-23 10:12:36 +08:00
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#### 示例
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```js
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file_copy("rename.txt","copy.txt");
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```
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2021-09-09 15:10:12 +08:00
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### 10.file\_stat
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> 获取文件信息。
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----------------------------
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#### 原型
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2022-08-23 10:12:36 +08:00
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```js
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2021-09-09 15:10:12 +08:00
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file_stat(filename) => object
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```
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返回的文件信息对象包含以下属性:
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| 属性名称 | 属性类型 | 说明 |
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| ----------- | -------- | ---------------------- |
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| dev | uint32_t | 文件系统设备 |
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| ino | uint16_t | 文件序列号 |
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| mode | uint16_t | 文件类型和权限信息 |
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| nlink | int16_t | 文件的符号链接数量 |
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| uid | int16_t | 用户id |
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| gid | int16_t | 组id |
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| rdev | uint32_t | 设备id |
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| size | uint64_t | 文件大小(单位:字节) |
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| atime | uint64_t | 最后访问时间 |
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| mtime | uint64_t | 最后修改时间 |
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| ctime | uint64_t | 创建时间 |
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| is_dir | bool_t | 是否为目录 |
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| is_link | bool_t | 是否为链接 |
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| is_reg_file | bool_t | 是否为普通文件 |
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2022-08-23 10:12:36 +08:00
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#### 示例
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```js
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var a = file_stat("rename.txt");
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print(join(": ","dev",a.dev));
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print(join(": ","ino",a.ino));
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print(join(": ","mode",a.mode));
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print(join(": ","nlink",a.nlink));
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print(join(": ","uid",a.uid));
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print(join(": ","rdev",a.rdev));
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print(join(": ","size",a.size));
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print(join(": ","atime",a.atime));
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print(join(": ","mtime",a.mtime));
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print(join(": ","ctime",a.ctime));
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print(join(": ","is_dir",a.is_dir));
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print(join(": ","is_link",a.is_link));
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print(join(": ","is_reg_file",a.is_reg_file));
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```
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2021-09-09 15:10:12 +08:00
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### 11.path\_create
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> 创建目录(递归创建不存在的父目录)。
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#### 原型
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2022-08-23 10:12:36 +08:00
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```js
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2021-01-13 14:40:14 +08:00
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path_create(path) => bool
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```
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2022-08-23 10:12:36 +08:00
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#### 示例
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```js
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path_create("a/b/c");
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```
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2021-09-09 15:10:12 +08:00
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### 12.path\_remove
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> 删除目录(递归创建子目录和文件)。
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----------------------------
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#### 原型
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2022-08-23 10:12:36 +08:00
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```js
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2021-01-13 14:40:14 +08:00
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path_remove(path) => bool
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```
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2022-08-23 10:12:36 +08:00
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#### 示例
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```js
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path_remove("a/b/c");
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```
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2021-09-09 15:10:12 +08:00
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### 13.path\_exist
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2021-01-13 14:40:14 +08:00
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> 检查指定的目录是否存在。
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----------------------------
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#### 原型
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2022-08-23 10:12:36 +08:00
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```js
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2021-01-13 14:40:14 +08:00
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path_exist(path) => bool
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```
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2022-08-23 10:12:36 +08:00
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#### 示例
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```js
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print(path_exist("a/b/c"));
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```
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2021-09-09 15:10:12 +08:00
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### 14.path\_rename
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> 目录重命名。
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----------------------------
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#### 原型
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2022-08-23 10:12:36 +08:00
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```js
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2021-09-09 15:10:12 +08:00
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path_rename(path, new_path) => bool
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```
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2022-08-23 10:12:36 +08:00
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#### 示例
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```js
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path_rename("a/b","a/bbb");
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```
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2021-09-09 15:10:12 +08:00
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### 15.path\_list
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> 获取指定目录下的子目录/文件列表。
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----------------------------
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#### 原型
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2022-08-23 10:12:36 +08:00
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```js
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2021-09-09 15:10:12 +08:00
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path_list(path) => array
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```
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返回的列表数组中每个元素都是一个 object 对象,每个 object 对象中包含以下属性:
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| 属性名称 | 属性类型 | 说明 |
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| ----------- | -------- | -------------- |
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| is_dir | bool_t | 是否是目录 |
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| is_link | bool_t | 是否是符号链接 |
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| is_reg_file | bool_t | 是否是普通文件 |
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| name | str | 文件名称 |
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2022-08-23 10:12:36 +08:00
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#### 示例
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```js
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2022-08-23 10:34:55 +08:00
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var a = path_list("a/b");
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var b = array_get(a,0);
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print(object_get(b.is_dir));
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print(object_get(b.is_link));
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print(object_get(b.is_reg_file));
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print(object_get(b.name));
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```
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2021-09-09 15:10:12 +08:00
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### 16.path\_get\_exe
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> 获取可执行文件所在目录。
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----------------------------
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#### 原型
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2022-08-23 10:12:36 +08:00
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```js
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2021-09-09 15:10:12 +08:00
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path_get_exe() => str
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```
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2022-08-23 10:12:36 +08:00
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|
|
#### 示例
|
|
|
|
|
|
|
|
|
|
```js
|
|
|
|
|
print(path_get_exe());
|
|
|
|
|
```
|
|
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|
2021-09-09 15:10:12 +08:00
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|
|
### 17.path\_get\_cwd
|
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|
|
> 获取当前所在目录。
|
|
|
|
|
----------------------------
|
|
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|
|
#### 原型
|
|
|
|
|
|
2022-08-23 10:12:36 +08:00
|
|
|
|
```js
|
2021-09-09 15:10:12 +08:00
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|
|
path_get_cwd() => str
|
|
|
|
|
```
|
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|
2022-08-23 10:12:36 +08:00
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|
|
#### 示例
|
|
|
|
|
|
|
|
|
|
```js
|
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|
|
print(path_get_cwd());
|
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|
|
|
```
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|
2021-09-09 15:10:12 +08:00
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|
|
### 18.path\_get\_temp
|
2021-01-13 14:40:14 +08:00
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|
|
> 获取临时目录的路径。
|
|
|
|
|
----------------------------
|
|
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|
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|
|
#### 原型
|
|
|
|
|
|
2022-08-23 10:12:36 +08:00
|
|
|
|
```js
|
2021-01-13 14:40:14 +08:00
|
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|
|
path_get_temp() => str
|
|
|
|
|
```
|
|
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|
2022-08-23 10:12:36 +08:00
|
|
|
|
#### 示例
|
|
|
|
|
|
|
|
|
|
```js
|
|
|
|
|
print(path_get_temp());
|
|
|
|
|
```
|
|
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|
|
|
2021-09-09 15:10:12 +08:00
|
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|
|
### 19.path\_get\_app\_root
|
2021-01-13 14:40:14 +08:00
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|
|
> 获取应用程序根目录的路径。
|
|
|
|
|
----------------------------
|
|
|
|
|
|
|
|
|
|
#### 原型
|
|
|
|
|
|
2022-08-23 10:12:36 +08:00
|
|
|
|
```js
|
2021-01-13 14:40:14 +08:00
|
|
|
|
path_get_app_root() => str
|
|
|
|
|
```
|
|
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|
2022-08-23 10:12:36 +08:00
|
|
|
|
#### 示例
|
|
|
|
|
|
|
|
|
|
```js
|
|
|
|
|
print(path_get_app_root());
|
|
|
|
|
```
|
|
|
|
|
|
2021-09-09 15:10:12 +08:00
|
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|
|
### 20.path\_get\_user\_storage\_root
|
2021-01-13 13:48:59 +08:00
|
|
|
|
|
2021-01-13 14:40:14 +08:00
|
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|
|
> 获取用户目录或用户可以存储数据的目录的路径。
|
|
|
|
|
----------------------------
|
|
|
|
|
|
|
|
|
|
#### 原型
|
|
|
|
|
|
2022-08-23 10:12:36 +08:00
|
|
|
|
```js
|
2021-01-13 14:40:14 +08:00
|
|
|
|
path_get_user_storage_root() => str
|
|
|
|
|
```
|
|
|
|
|
|
2022-08-23 10:12:36 +08:00
|
|
|
|
#### 示例
|
|
|
|
|
|
|
|
|
|
```js
|
|
|
|
|
print(path_get_user_storage_root());
|
|
|
|
|
```
|
|
|
|
|
|
2021-09-09 15:10:12 +08:00
|
|
|
|
### 21.fs\_get\_disk\_info
|
|
|
|
|
|
|
|
|
|
> 获取文件系统信息。
|
|
|
|
|
----------------------------
|
|
|
|
|
|
|
|
|
|
#### 原型
|
|
|
|
|
|
2022-08-23 10:12:36 +08:00
|
|
|
|
```js
|
2021-09-09 15:10:12 +08:00
|
|
|
|
fs_get_disk_info(path) => object
|
|
|
|
|
```
|
|
|
|
|
|
|
|
|
|
返回的文件系统信息对象包含以下属性:
|
|
|
|
|
|
2022-08-23 10:12:36 +08:00
|
|
|
|
| 属性名称 | 属性类型 | 说明 |
|
|
|
|
|
| -------- | -------- | ---------------- |
|
|
|
|
|
| free_kb | int32_t | 空闲空间大小(KB) |
|
|
|
|
|
| total_kb | int32_t | 总共空间大小(KB) |
|
2021-09-09 15:10:12 +08:00
|
|
|
|
|
|
|
|
|
> 备注:该功能需适配 AWTK 通用文件系统(fs.h)中的 fs_get_disk_info 接口,目前 PC 上暂不支持。
|
|
|
|
|
|
2022-08-23 10:12:36 +08:00
|
|
|
|
```js
|
2022-08-23 10:34:55 +08:00
|
|
|
|
var a = fs_get_disk_info("/sd");
|
2022-08-23 10:12:36 +08:00
|
|
|
|
print(join(": ","free_kb",a.free_kb));
|
|
|
|
|
print(join(": ","total_kb",a.total_kb));
|
|
|
|
|
```
|
|
|
|
|
|
2021-01-13 13:48:59 +08:00
|
|
|
|
### 更多示例
|
|
|
|
|
|
|
|
|
|
```js
|
|
|
|
|
assert(file_write("test.txt", "hello"))
|
|
|
|
|
assert(file_exist("test.txt"))
|
|
|
|
|
assert(file_get_size("test.txt")==5)
|
|
|
|
|
assert(file_read_text("test.txt") == "hello")
|
2021-09-09 15:10:12 +08:00
|
|
|
|
assert(file_write_append("test.txt","world"))
|
|
|
|
|
assert(file_read_text("test.txt") == "helloworld")
|
|
|
|
|
assert(file_rename("test.txt","rename.txt"))
|
2021-01-13 13:48:59 +08:00
|
|
|
|
assert(!file_exist("test.txt"))
|
2021-09-09 15:10:12 +08:00
|
|
|
|
assert(file_read_text("rename.txt") == "helloworld")
|
|
|
|
|
assert(file_copy("rename.txt","copy.txt"))
|
|
|
|
|
assert(file_read_text("copy.txt") == "helloworld")
|
|
|
|
|
assert(file_remove("copy.txt"))
|
|
|
|
|
assert(!file_exist("copy.txt"))
|
|
|
|
|
|
2022-08-23 10:34:55 +08:00
|
|
|
|
var a = file_stat("rename.txt")
|
2021-09-09 15:10:12 +08:00
|
|
|
|
print(join(": ","dev",a.dev))
|
|
|
|
|
print(join(": ","ino",a.ino))
|
|
|
|
|
print(join(": ","mode",a.mode))
|
|
|
|
|
print(join(": ","nlink",a.nlink))
|
|
|
|
|
print(join(": ","uid",a.uid))
|
|
|
|
|
print(join(": ","rdev",a.rdev))
|
|
|
|
|
print(join(": ","size",a.size))
|
|
|
|
|
print(join(": ","atime",a.atime))
|
|
|
|
|
print(join(": ","mtime",a.mtime))
|
|
|
|
|
print(join(": ","ctime",a.ctime))
|
|
|
|
|
print(join(": ","is_dir",a.is_dir))
|
|
|
|
|
print(join(": ","is_link",a.is_link))
|
|
|
|
|
print(join(": ","is_reg_file",a.is_reg_file))
|
|
|
|
|
assert(file_remove("rename.txt"))
|
|
|
|
|
assert(!file_exist("rename.txt"))
|
2021-01-13 13:48:59 +08:00
|
|
|
|
|
|
|
|
|
assert(file_write("test.bin", "hello", 5))
|
|
|
|
|
assert(file_exist("test.bin"))
|
|
|
|
|
assert(file_get_size("test.bin")==5)
|
|
|
|
|
a = file_read_binary("test.bin")
|
|
|
|
|
assert(value_get_binary_size(a) == 5)
|
|
|
|
|
assert(file_remove("test.bin"))
|
|
|
|
|
assert(!file_exist("test.bin"))
|
|
|
|
|
|
|
|
|
|
assert(file_write("test.bin", a))
|
|
|
|
|
assert(file_exist("test.bin"))
|
|
|
|
|
assert(file_get_size("test.bin")==5)
|
|
|
|
|
assert(file_remove("test.bin"))
|
|
|
|
|
|
|
|
|
|
assert(path_create("a/b/c"))
|
|
|
|
|
assert(path_exist("a/b/c"))
|
|
|
|
|
assert(path_remove("a/b/c"))
|
|
|
|
|
assert(!path_exist("a/b/c"))
|
2021-09-09 15:10:12 +08:00
|
|
|
|
assert(path_rename("a/b","a/bbb"))
|
|
|
|
|
assert(!path_exist("a/b"))
|
|
|
|
|
assert(path_exist("a/bbb"))
|
|
|
|
|
assert(file_write("a/test.txt", "hello"))
|
|
|
|
|
a = path_list("a")
|
|
|
|
|
assert(a.size==2)
|
2022-08-23 10:34:55 +08:00
|
|
|
|
var b = array_get(a,0)
|
|
|
|
|
var c = array_get(a,1)
|
2021-09-09 15:10:12 +08:00
|
|
|
|
assert(b.name=="bbb")
|
|
|
|
|
assert(c.name=="test.txt")
|
|
|
|
|
assert(path_remove("a"))
|
|
|
|
|
assert(!path_exist("a"))
|
|
|
|
|
|
|
|
|
|
print(path_get_exe())
|
|
|
|
|
print(path_get_cwd())
|
2021-01-13 13:48:59 +08:00
|
|
|
|
print(path_get_temp())
|
|
|
|
|
print(path_get_app_root())
|
|
|
|
|
print(path_get_user_storage_root())
|
2021-09-09 15:10:12 +08:00
|
|
|
|
|
|
|
|
|
unset(a)
|
|
|
|
|
unset(b)
|
|
|
|
|
unset(c)
|
2021-01-13 13:48:59 +08:00
|
|
|
|
```
|
|
|
|
|
|