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!16910 [翻译完成】#I6OFDM 

Merge pull request !16910 from Annie_wang/PR16249
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en/application-dev/reference/apis/js-apis-file-fs.md
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......@@ -15,7 +15,7 @@ import fs from '@ohos.file.fs';
## Guidelines
Before using the APIs provided by this module to perform operations on files or directories, obtain the path of the file or directory in the application sandbox as follows:
Before using the APIs provided by this module to perform operations on files or folders, obtain the path of the file or directory in the application sandbox as follows:
**Stage Model**
......@@ -59,9 +59,9 @@ Obtains detailed file information. This API uses a promise to return the result.
**Return value**
| Type | Description |
| ---------------------------- | ---------- |
| Promise<[Stat](#stat)> | Promise used to return the file information obtained.|
| Type | Description |
| ---------------------------- | ---------- |
| Promise<[Stat](#stat)> | Promise used to return the file information obtained.|
**Example**
......@@ -118,9 +118,9 @@ Obtains detailed file information synchronously.
**Return value**
| Type | Description |
| ------------- | ---------- |
| [Stat](#stat) | File information obtained.|
| Type | Description |
| ------------- | ---------- |
| [Stat](#stat) | File information obtained.|
**Example**
......@@ -145,9 +145,9 @@ Checks whether a file exists. This API uses a promise to return the result.
**Return value**
| Type | Description |
| ------------------- | ---------------------------- |
| Promise<boolean> | Promise used to return a Boolean value.|
| Type | Description |
| ------------------- | ---------------------------- |
| Promise<boolean> | Promise used to return a Boolean value.|
**Example**
......@@ -232,15 +232,15 @@ Closes a file. This API uses a promise to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
| ---- | ------ | ---- | ------------ |
| file | [File](#file)\|number | Yes | File object or FD of the file to close.|
| Name | Type | Mandatory | Description |
| ---- | ------ | ---- | ------------ |
| file | [File](#file)\|number | Yes | File object or FD of the file to close.|
**Return value**
| Type | Description |
| ------------------- | ---------------------------- |
| Promise<void> | Promise that returns no value.|
| Type | Description |
| ------------------- | ---------------------------- |
| Promise<void> | Promise that returns no value.|
**Example**
......@@ -265,10 +265,10 @@ Closes a file. This API uses an asynchronous callback to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
| -------- | ------------------------- | ---- | ------------ |
| file | [File](#file)\|number | Yes | File object or FD of the file to close.|
| callback | AsyncCallback<void> | Yes | Callback invoked when the file is closed asynchronously.|
| Name | Type | Mandatory | Description |
| -------- | ------------------------- | ---- | ------------ |
| file | [File](#file)\|number | Yes | File object or FD of the file to close.|
| callback | AsyncCallback<void> | Yes | Callback invoked when the file is closed asynchronously.|
**Example**
......@@ -294,9 +294,9 @@ Synchronously closes a file.
**Parameters**
| Name | Type | Mandatory | Description |
| ---- | ------ | ---- | ------------ |
| file | [File](#file)\|number | Yes | File object or FD of the file to close.|
| Name | Type | Mandatory | Description |
| ---- | ------ | ---- | ------------ |
| file | [File](#file)\|number | Yes | File object or FD of the file to close.|
**Example**
......@@ -316,17 +316,17 @@ Copies a file. This API uses a promise to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
| ---- | -------------------------- | ---- | ---------------------------------------- |
| src | string\|number | Yes | Path or FD of the file to copy. |
| dest | string\|number | Yes | Destination path of the file or FD of the file created. |
| mode | number | No | Whether to overwrite the file of the same name in the destination path. The default value is **0**, which is the only value supported.<br>**0**: overwrite the file of the same name.|
| Name | Type | Mandatory | Description |
| ---- | -------------------------- | ---- | ---------------------------------------- |
| src | string\|number | Yes | Path or FD of the file to copy. |
| dest | string\|number | Yes | Destination path of the file or FD of the file created. |
| mode | number | No | Whether to overwrite the file of the same name in the destination path. The default value is **0**, which is the only value supported.<br>**0**: overwrite the file of the same name.|
**Return value**
| Type | Description |
| ------------------- | ---------------------------- |
| Promise&lt;void&gt; | Promise that returns no value.|
| Type | Description |
| ------------------- | ---------------------------- |
| Promise&lt;void&gt; | Promise that returns no value.|
**Example**
......@@ -350,12 +350,12 @@ Copies a file. This API uses an asynchronous callback to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
| -------- | -------------------------- | ---- | ---------------------------------------- |
| src | string\|number | Yes | Path or FD of the file to copy. |
| dest | string\|number | Yes | Destination path of the file or FD of the file created. |
| mode | number | No | Whether to overwrite the file of the same name in the destination path. The default value is **0**, which is the only value supported.<br>**0**: overwrite the file with the same name and truncate the part that is not overwritten.|
| callback | AsyncCallback&lt;void&gt; | Yes | Callback invoked when the file is copied asynchronously. |
| Name | Type | Mandatory | Description |
| -------- | -------------------------- | ---- | ---------------------------------------- |
| src | string\|number | Yes | Path or FD of the file to copy. |
| dest | string\|number | Yes | Destination path of the file or FD of the file created. |
| mode | number | No | Whether to overwrite the file of the same name in the destination path. The default value is **0**, which is the only value supported.<br>**0**: overwrite the file with the same name and truncate the part that is not overwritten.|
| callback | AsyncCallback&lt;void&gt; | Yes | Callback invoked when the file is copied asynchronously. |
**Example**
......@@ -382,11 +382,11 @@ Synchronously copies a file.
**Parameters**
| Name | Type | Mandatory | Description |
| ---- | -------------------------- | ---- | ---------------------------------------- |
| src | string\|number | Yes | Path or FD of the file to copy. |
| dest | string\|number | Yes | Destination path of the file or FD of the file created. |
| mode | number | No | Whether to overwrite the file of the same name in the destination path. The default value is **0**, which is the only value supported.<br>**0**: overwrite the file with the same name and truncate the part that is not overwritten.|
| Name | Type | Mandatory | Description |
| ---- | -------------------------- | ---- | ---------------------------------------- |
| src | string\|number | Yes | Path or FD of the file to copy. |
| dest | string\|number | Yes | Destination path of the file or FD of the file created. |
| mode | number | No | Whether to overwrite the file of the same name in the destination path. The default value is **0**, which is the only value supported.<br>**0**: overwrite the file with the same name and truncate the part that is not overwritten.|
**Example**
......@@ -413,9 +413,9 @@ Creates a directory. This API uses a promise to return the result.
**Return value**
| Type | Description |
| ------------------- | ---------------------------- |
| Promise&lt;void&gt; | Promise that returns no value.|
| Type | Description |
| ------------------- | ---------------------------- |
| Promise&lt;void&gt; | Promise that returns no value.|
**Example**
......@@ -497,9 +497,9 @@ Opens a file. This API uses a promise to return the result. File uniform resourc
**Return value**
| Type | Description |
| --------------------- | ----------- |
| Promise&lt;[File](#file)&gt; | Promise used to return the file object.|
| Type | Description |
| --------------------- | ----------- |
| Promise&lt;[File](#file)&gt; | Promise used to return the file object.|
**Example**
......@@ -558,9 +558,9 @@ Synchronously opens a file. File URIs are supported.
**Return value**
| Type | Description |
| ------ | ----------- |
| [File](#file) | File object opened.|
| Type | Description |
| ------ | ----------- |
| [File](#file) | File object opened.|
**Example**
......@@ -589,9 +589,9 @@ Reads data from a file. This API uses a promise to return the result.
**Return value**
| Type | Description |
| ---------------------------------- | ------ |
| Promise&lt;number&gt; | Promise used to return the data read.|
| Type | Description |
| ---------------------------------- | ------ |
| Promise&lt;number&gt; | Promise used to return the data read.|
**Example**
......@@ -601,7 +601,7 @@ Reads data from a file. This API uses a promise to return the result.
let buf = new ArrayBuffer(4096);
fs.read(file.fd, buf).then((readLen) => {
console.info("Read file data successfully");
console.info(String.fromCharCode.apply(null, new Uint8Array(readLen)));
console.info(String.fromCharCode.apply(null, new Uint8Array(buf.slice(0, readLen))));
fs.closeSync(file);
}).catch((err) => {
console.info("read file data failed with error message: " + err.message + ", error code: " + err.code);
......@@ -618,12 +618,12 @@ Reads data from a file. This API uses an asynchronous callback to return the res
**Parameters**
| Name | Type | Mandatory | Description |
| -------- | ---------------------------------------- | ---- | ---------------------------------------- |
| fd | number | Yes | FD of the file. |
| buffer | ArrayBuffer | Yes | Buffer used to store the file data read. |
| options | Object | No | The options are as follows:<br>- **offset** (number): position of the data to read in the file. This parameter is optional. By default, data is read from the current position.<br>- **length** (number): length of the data to read. This parameter is optional. The default value is the buffer length.|
| callback | AsyncCallback&lt;number&gt; | Yes | Callback invoked when the data is read asynchronously. |
| Name | Type | Mandatory | Description |
| -------- | ---------------------------------------- | ---- | ---------------------------------------- |
| fd | number | Yes | FD of the file. |
| buffer | ArrayBuffer | Yes | Buffer used to store the file data read. |
| options | Object | No | The options are as follows:<br>- **offset** (number): position of the data to read in the file. This parameter is optional. By default, data is read from the current position.<br>- **length** (number): length of the data to read. This parameter is optional. The default value is the buffer length.|
| callback | AsyncCallback&lt;number&gt; | Yes | Callback invoked when the data is read asynchronously. |
**Example**
......@@ -636,7 +636,7 @@ Reads data from a file. This API uses an asynchronous callback to return the res
console.info("mkdir failed with error message: " + err.message + ", error code: " + err.code);
} else {
console.info("Read file data successfully");
console.info(String.fromCharCode.apply(null, new Uint8Array(readLen)));
console.info(String.fromCharCode.apply(null, new Uint8Array(buf.slice(0, readLen))));
fs.closeSync(file);
}
});
......@@ -653,17 +653,17 @@ Synchronously reads data from a file.
**Parameters**
| Name | Type | Mandatory | Description |
| ------- | ----------- | ---- | ---------------------------------------- |
| fd | number | Yes | FD of the file. |
| buffer | ArrayBuffer | Yes | Buffer used to store the file data read. |
| options | Object | No | The options are as follows:<br>- **offset** (number): position of the data to read in the file. This parameter is optional. By default, data is read from the current position.<br>- **length** (number): length of the data to read. This parameter is optional. The default value is the buffer length.|
| Name | Type | Mandatory | Description |
| ------- | ----------- | ---- | ---------------------------------------- |
| fd | number | Yes | FD of the file. |
| buffer | ArrayBuffer | Yes | Buffer used to store the file data read. |
| options | Object | No | The options are as follows:<br>- **offset** (number): position of the data to read in the file. This parameter is optional. By default, data is read from the current position.<br>- **length** (number): length of the data to read. This parameter is optional. The default value is the buffer length.|
**Return value**
| Type | Description |
| ------ | -------- |
| number | Length of the data read.|
| Type | Description |
| ------ | -------- |
| number | Length of the data read.|
**Example**
......@@ -692,9 +692,9 @@ Deletes a directory. This API uses a promise to return the result.
**Return value**
| Type | Description |
| ------------------- | ---------------------------- |
| Promise&lt;void&gt; | Promise that returns no value.|
| Type | Description |
| ------------------- | ---------------------------- |
| Promise&lt;void&gt; | Promise that returns no value.|
**Example**
......@@ -775,9 +775,9 @@ Deletes a file. This API uses a promise to return the result.
**Return value**
| Type | Description |
| ------------------- | ---------------------------- |
| Promise&lt;void&gt; | Promise that returns no value.|
| Type | Description |
| ------------------- | ---------------------------- |
| Promise&lt;void&gt; | Promise that returns no value.|
**Example**
......@@ -852,17 +852,17 @@ Writes data into a file. This API uses a promise to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
| ------- | ------------------------------- | ---- | ---------------------------------------- |
| fd | number | Yes | FD of the file. |
| buffer | ArrayBuffer\|string | Yes | Data to write. It can be a string or data from a buffer. |
| options | Object | No | The options are as follows:<br>- **offset** (number): start position to write the data in the file. This parameter is optional. By default, data is written from the current position.<br>- **length** (number): length of the data to write. This parameter is optional. The default value is the buffer length.<br>- **encoding** (string): format of the data to be encoded when the data is a string. The default value is **'utf-8'**, which is the only value supported.|
| Name | Type | Mandatory | Description |
| ------- | ------------------------------- | ---- | ---------------------------------------- |
| fd | number | Yes | FD of the file. |
| buffer | ArrayBuffer\|string | Yes | Data to write. It can be a string or data from a buffer. |
| options | Object | No | The options are as follows:<br>- **offset** (number): start position to write the data in the file. This parameter is optional. By default, data is written from the current position.<br>- **length** (number): length of the data to write. This parameter is optional. The default value is the buffer length.<br>- **encoding** (string): format of the data to be encoded when the data is a string. The default value is **'utf-8'**, which is the only value supported.|
**Return value**
| Type | Description |
| --------------------- | -------- |
| Promise&lt;number&gt; | Promise used to return the length of the data written.|
| Type | Description |
| --------------------- | -------- |
| Promise&lt;number&gt; | Promise used to return the length of the data written.|
**Example**
......@@ -888,12 +888,12 @@ Writes data into a file. This API uses an asynchronous callback to return the re
**Parameters**
| Name | Type | Mandatory | Description |
| -------- | ------------------------------- | ---- | ---------------------------------------- |
| fd | number | Yes | FD of the file. |
| buffer | ArrayBuffer\|string | Yes | Data to write. It can be a string or data from a buffer. |
| options | Object | No | The options are as follows:<br>- **offset** (number): start position to write the data in the file. This parameter is optional. By default, data is written from the current position.<br>- **length** (number): length of the data to write. This parameter is optional. The default value is the buffer length.<br>- **encoding** (string): format of the data to be encoded when the data is a string. The default value is **'utf-8'**, which is the only value supported.|
| callback | AsyncCallback&lt;number&gt; | Yes | Callback invoked when the data is written asynchronously. |
| Name | Type | Mandatory | Description |
| -------- | ------------------------------- | ---- | ---------------------------------------- |
| fd | number | Yes | FD of the file. |
| buffer | ArrayBuffer\|string | Yes | Data to write. It can be a string or data from a buffer. |
| options | Object | No | The options are as follows:<br>- **offset** (number): start position to write the data in the file. This parameter is optional. By default, data is written from the current position.<br>- **length** (number): length of the data to write. This parameter is optional. The default value is the buffer length.<br>- **encoding** (string): format of the data to be encoded when the data is a string. The default value is **'utf-8'**, which is the only value supported.|
| callback | AsyncCallback&lt;number&gt; | Yes | Callback invoked when the data is written asynchronously. |
**Example**
......@@ -921,17 +921,17 @@ Synchronously writes data into a file.
**Parameters**
| Name | Type | Mandatory | Description |
| ------- | ------------------------------- | ---- | ---------------------------------------- |
| fd | number | Yes | FD of the file. |
| buffer | ArrayBuffer\|string | Yes | Data to write. It can be a string or data from a buffer. |
| options | Object | No | The options are as follows:<br>- **offset** (number): start position to write the data in the file. This parameter is optional. By default, data is written from the current position.<br>- **length** (number): length of the data to write. This parameter is optional. The default value is the buffer length.<br>- **encoding** (string): format of the data to be encoded when the data is a string. The default value is **'utf-8'**, which is the only value supported.|
| Name | Type | Mandatory | Description |
| ------- | ------------------------------- | ---- | ---------------------------------------- |
| fd | number | Yes | FD of the file. |
| buffer | ArrayBuffer\|string | Yes | Data to write. It can be a string or data from a buffer. |
| options | Object | No | The options are as follows:<br>- **offset** (number): start position to write the data in the file. This parameter is optional. By default, data is written from the current position.<br>- **length** (number): length of the data to write. This parameter is optional. The default value is the buffer length.<br>- **encoding** (string): format of the data to be encoded when the data is a string. The default value is **'utf-8'**, which is the only value supported.|
**Return value**
| Type | Description |
| ------ | -------- |
| number | Length of the data written in the file.|
| Type | Description |
| ------ | -------- |
| number | Length of the data written in the file.|
**Example**
......@@ -960,9 +960,9 @@ Truncates a file. This API uses a promise to return the result.
**Return value**
| Type | Description |
| ------------------- | ---------------------------- |
| Promise&lt;void&gt; | Promise that returns no value.|
| Type | Description |
| ------------------- | ---------------------------- |
| Promise&lt;void&gt; | Promise that returns no value.|
**Example**
......@@ -1049,9 +1049,9 @@ Reads the text content of a file. This API uses a promise to return the result.
**Return value**
| Type | Description |
| --------------------- | ---------- |
| Promise&lt;string&gt; | Promise used to return the content read.|
| Type | Description |
| --------------------- | ---------- |
| Promise&lt;string&gt; | Promise used to return the content read.|
**Example**
......@@ -1112,9 +1112,9 @@ Synchronously reads the text of a file.
**Return value**
| Type | Description |
| ------ | -------------------- |
| string | Promise used to return the content of the file read.|
| Type | Description |
| ------ | -------------------- |
| string | Promise used to return the content of the file read.|
**Example**
......@@ -1140,9 +1140,9 @@ Obtains information about a symbolic link. This API uses a promise to return the
**Return value**
| Type | Description |
| ---------------------------- | ---------- |
| Promise&lt;[Stat](#stat)&gt; | Promise used to return the symbolic link information obtained. For details, see **stat**.|
| Type | Description |
| ---------------------------- | ---------- |
| Promise&lt;[Stat](#stat)&gt; | Promise used to return the symbolic link information obtained. For details, see **stat**.|
**Example**
......@@ -1200,9 +1200,9 @@ Obtains information about a symbolic link synchronously.
**Return value**
| Type | Description |
| ------------- | ---------- |
| [Stat](#stat) | File information obtained.|
| Type | Description |
| ------------- | ---------- |
| [Stat](#stat) | File information obtained.|
**Example**
......@@ -1215,7 +1215,7 @@ Obtains information about a symbolic link synchronously.
rename(oldPath: string, newPath: string): Promise&lt;void&gt;
Renames a file or directory. This API uses a promise to return the result.
Renames a file or folder. This API uses a promise to return the result.
**System capability**: SystemCapability.FileManagement.File.FileIO
......@@ -1228,9 +1228,9 @@ Renames a file or directory. This API uses a promise to return the result.
**Return value**
| Type | Description |
| ------------------- | ---------------------------- |
| Promise&lt;void&gt; | Promise that returns no value.|
| Type | Description |
| ------------------- | ---------------------------- |
| Promise&lt;void&gt; | Promise that returns no value.|
**Example**
......@@ -1248,7 +1248,7 @@ Renames a file or directory. This API uses a promise to return the result.
rename(oldPath: string, newPath: string, callback: AsyncCallback&lt;void&gt;): void
Renames a file or directory. This API uses an asynchronous callback to return the result.
Renames a file or folder. This API uses an asynchronous callback to return the result.
**System capability**: SystemCapability.FileManagement.File.FileIO
......@@ -1278,7 +1278,7 @@ Renames a file or directory. This API uses an asynchronous callback to return th
renameSync(oldPath: string, newPath: string): void
Renames a file or directory synchronously.
Renames a file or folder synchronously.
**System capability**: SystemCapability.FileManagement.File.FileIO
......@@ -1308,15 +1308,15 @@ Flushes data of a file to disk. This API uses a promise to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
| ---- | ------ | ---- | ------------ |
| fd | number | Yes | FD of the file.|
| Name | Type | Mandatory | Description |
| ---- | ------ | ---- | ------------ |
| fd | number | Yes | FD of the file.|
**Return value**
| Type | Description |
| ------------------- | ---------------------------- |
| Promise&lt;void&gt; | Promise that returns no value.|
| Type | Description |
| ------------------- | ---------------------------- |
| Promise&lt;void&gt; | Promise that returns no value.|
**Example**
......@@ -1341,10 +1341,10 @@ Flushes data of a file to disk. This API uses an asynchronous callback to return
**Parameters**
| Name | Type | Mandatory | Description |
| -------- | ------------------------- | ---- | --------------- |
| fd | number | Yes | FD of the file. |
| Callback | AsyncCallback&lt;void&gt; | Yes | Callback invoked when the file data is synchronized in asynchronous mode.|
| Name | Type | Mandatory | Description |
| -------- | ------------------------- | ---- | --------------- |
| fd | number | Yes | FD of the file. |
| Callback | AsyncCallback&lt;void&gt; | Yes | Callback invoked when the file data is synchronized in asynchronous mode.|
**Example**
......@@ -1372,9 +1372,9 @@ Flushes data of a file to disk synchronously.
**Parameters**
| Name | Type | Mandatory | Description |
| ---- | ------ | ---- | ------------ |
| fd | number | Yes | FD of the file.|
| Name | Type | Mandatory | Description |
| ---- | ------ | ---- | ------------ |
| fd | number | Yes | FD of the file.|
**Example**
......@@ -1396,15 +1396,15 @@ Flushes data of a file to disk. This API uses a promise to return the result. **
**Parameters**
| Name | Type | Mandatory | Description |
| ---- | ------ | ---- | ------------ |
| fd | number | Yes | FD of the file.|
| Name | Type | Mandatory | Description |
| ---- | ------ | ---- | ------------ |
| fd | number | Yes | FD of the file.|
**Return value**
| Type | Description |
| ------------------- | ---------------------------- |
| Promise&lt;void&gt; | Promise that returns no value.|
| Type | Description |
| ------------------- | ---------------------------- |
| Promise&lt;void&gt; | Promise that returns no value.|
**Example**
......@@ -1430,10 +1430,10 @@ Flushes data of a file to disk. This API uses an asynchronous callback to return
**Parameters**
| Name | Type | Mandatory | Description |
| -------- | ------------------------------- | ---- | ----------------- |
| fd | number | Yes | FD of the file. |
| callback | AsyncCallback&lt;void&gt; | Yes | Callback invoked when the file data is synchronized in asynchronous mode.|
| Name | Type | Mandatory | Description |
| -------- | ------------------------------- | ---- | ----------------- |
| fd | number | Yes | FD of the file. |
| callback | AsyncCallback&lt;void&gt; | Yes | Callback invoked when the file data is synchronized in asynchronous mode.|
**Example**
......@@ -1460,9 +1460,9 @@ Synchronizes data in a file synchronously.
**Parameters**
| Name | Type | Mandatory | Description |
| ---- | ------ | ---- | ------------ |
| fd | number | Yes | FD of the file.|
| Name | Type | Mandatory | Description |
| ---- | ------ | ---- | ------------ |
| fd | number | Yes | FD of the file.|
**Example**
......@@ -1491,9 +1491,9 @@ Creates a symbolic link based on a file path. This API uses a promise to return
**Return value**
| Type | Description |
| ------------------- | ---------------------------- |
| Promise&lt;void&gt; | Promise that returns no value.|
| Type | Description |
| ------------------- | ---------------------------- |
| Promise&lt;void&gt; | Promise that returns no value.|
**Example**
......@@ -1570,15 +1570,15 @@ Creates a temporary directory. This API uses a promise to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
| ------ | ------ | ---- | --------------------------- |
| prefix | string | Yes | A randomly generated string used to replace "XXXXXX" in a directory.|
| Name | Type | Mandatory | Description |
| ------ | ------ | ---- | --------------------------- |
| prefix | string | Yes | A randomly generated string used to replace "XXXXXX" in a directory.|
**Return value**
| Type | Description |
| --------------------- | ---------- |
| Promise&lt;string&gt; | Promise used to return the unique directory generated.|
| Type | Description |
| --------------------- | ---------- |
| Promise&lt;string&gt; | Promise used to return the unique directory generated.|
**Example**
......@@ -1601,10 +1601,10 @@ Creates a temporary directory. This API uses an asynchronous callback to return
**Parameters**
| Name | Type | Mandatory | Description |
| -------- | --------------------------- | ---- | --------------------------- |
| prefix | string | Yes | A randomly generated string used to replace "XXXXXX" in a directory.|
| callback | AsyncCallback&lt;string&gt; | Yes | Callback invoked when a temporary directory is created asynchronously. |
| Name | Type | Mandatory | Description |
| -------- | --------------------------- | ---- | --------------------------- |
| prefix | string | Yes | A randomly generated string used to replace "XXXXXX" in a directory.|
| callback | AsyncCallback&lt;string&gt; | Yes | Callback invoked when a temporary directory is created asynchronously. |
**Example**
......@@ -1628,21 +1628,21 @@ Synchronously creates a temporary directory.
**Parameters**
| Name | Type | Mandatory | Description |
| ------ | ------ | ---- | --------------------------- |
| prefix | string | Yes | A randomly generated string used to replace "XXXXXX" in a directory.|
| Name | Type | Mandatory | Description |
| ------ | ------ | ---- | --------------------------- |
| prefix | string | Yes | A randomly generated string used to replace "XXXXXX" in a directory.|
**Return value**
| Type | Description |
| ------ | ---------- |
| string | Unique path generated.|
| Type | Description |
| ------ | ---------- |
| string | Unique path generated.|
**Example**
```js
let res = fs.mkdtempSync(pathDir + "/XXXXXX");
```
```
## fs.createStream
......@@ -1661,9 +1661,9 @@ Opens a file stream based on the file path. This API uses a promise to return th
**Return value**
| Type | Description |
| --------------------------------- | --------- |
| Promise&lt;[Stream](#stream)&gt; | Promise used to return the result.|
| Type | Description |
| --------------------------------- | --------- |
| Promise&lt;[Stream](#stream)&gt; | Promise used to return the result.|
**Example**
......@@ -1723,9 +1723,9 @@ Synchronously opens a stream based on the file path.
**Return value**
| Type | Description |
| ------------------ | --------- |
| [Stream](#stream) | Stream opened.|
| Type | Description |
| ------------------ | --------- |
| [Stream](#stream) | Stream opened.|
**Example**
......@@ -1745,16 +1745,16 @@ Opens a file stream based on the file descriptor. This API uses a promise to ret
**Parameters**
| Name | Type | Mandatory | Description |
| ---- | ------ | ---- | ---------------------------------------- |
| fd | number | Yes | FD of the file. |
| mode | string | Yes | - **r**: Open a file for reading. The file must exist.<br>- **r+**: Open a file for both reading and writing. The file must exist.<br>- **w**: Open a file for writing. If the file exists, clear its content. If the file does not exist, create a file.<br>- **w+**: Open a file for both reading and writing. If the file exists, clear its content. If the file does not exist, create a file.<br>- **a**: Open a file in append mode for writing at the end of the file. If the file does not exist, create a file. If the file exists, write data to the end of the file (the original content of the file is reserved).<br>- **a+**: Open a file in append mode for reading or updating at the end of the file. If the file does not exist, create a file. If the file exists, write data to the end of the file (the original content of the file is reserved).|
| Name | Type | Mandatory | Description |
| ---- | ------ | ---- | ---------------------------------------- |
| fd | number | Yes | FD of the file. |
| mode | string | Yes | - **r**: Open a file for reading. The file must exist.<br>- **r+**: Open a file for both reading and writing. The file must exist.<br>- **w**: Open a file for writing. If the file exists, clear its content. If the file does not exist, create a file.<br>- **w+**: Open a file for both reading and writing. If the file exists, clear its content. If the file does not exist, create a file.<br>- **a**: Open a file in append mode for writing at the end of the file. If the file does not exist, create a file. If the file exists, write data to the end of the file (the original content of the file is reserved).<br>- **a+**: Open a file in append mode for reading or updating at the end of the file. If the file does not exist, create a file. If the file exists, write data to the end of the file (the original content of the file is reserved).|
**Return value**
| Type | Description |
| --------------------------------- | --------- |
| Promise&lt;[Stream](#stream)&gt; | Promise used to return the result.|
| Type | Description |
| --------------------------------- | --------- |
| Promise&lt;[Stream](#stream)&gt; | Promise used to return the result.|
**Example**
......@@ -1780,11 +1780,11 @@ Opens a file stream based on the file descriptor. This API uses an asynchronous
**Parameters**
| Name | Type | Mandatory | Description |
| -------- | ---------------------------------------- | ---- | ---------------------------------------- |
| fd | number | Yes | FD of the file. |
| mode | string | Yes | - **r**: Open a file for reading. The file must exist.<br>- **r+**: Open a file for both reading and writing. The file must exist.<br>- **w**: Open a file for writing. If the file exists, clear its content. If the file does not exist, create a file.<br>- **w+**: Open a file for both reading and writing. If the file exists, clear its content. If the file does not exist, create a file.<br>- **a**: Open a file in append mode for writing at the end of the file. If the file does not exist, create a file. If the file exists, write data to the end of the file (the original content of the file is reserved).<br>- **a+**: Open a file in append mode for reading or updating at the end of the file. If the file does not exist, create a file. If the file exists, write data to the end of the file (the original content of the file is reserved).|
| callback | AsyncCallback&lt;[Stream](#stream)&gt; | Yes | Callback invoked when the stream is open asynchronously. |
| Name | Type | Mandatory | Description |
| -------- | ---------------------------------------- | ---- | ---------------------------------------- |
| fd | number | Yes | FD of the file. |
| mode | string | Yes | - **r**: Open a file for reading. The file must exist.<br>- **r+**: Open a file for both reading and writing. The file must exist.<br>- **w**: Open a file for writing. If the file exists, clear its content. If the file does not exist, create a file.<br>- **w+**: Open a file for both reading and writing. If the file exists, clear its content. If the file does not exist, create a file.<br>- **a**: Open a file in append mode for writing at the end of the file. If the file does not exist, create a file. If the file exists, write data to the end of the file (the original content of the file is reserved).<br>- **a+**: Open a file in append mode for reading or updating at the end of the file. If the file does not exist, create a file. If the file exists, write data to the end of the file (the original content of the file is reserved).|
| callback | AsyncCallback&lt;[Stream](#stream)&gt; | Yes | Callback invoked when the stream is open asynchronously. |
**Example**
......@@ -1811,16 +1811,16 @@ Synchronously opens a stream based on the file descriptor.
**Parameters**
| Name | Type | Mandatory | Description |
| ---- | ------ | ---- | ---------------------------------------- |
| fd | number | Yes | FD of the file. |
| mode | string | Yes | - **r**: Open a file for reading. The file must exist.<br>- **r+**: Open a file for both reading and writing. The file must exist.<br>- **w**: Open a file for writing. If the file exists, clear its content. If the file does not exist, create a file.<br>- **w+**: Open a file for both reading and writing. If the file exists, clear its content. If the file does not exist, create a file.<br>- **a**: Open a file in append mode for writing at the end of the file. If the file does not exist, create a file. If the file exists, write data to the end of the file (the original content of the file is reserved).<br>- **a+**: Open a file in append mode for reading or updating at the end of the file. If the file does not exist, create a file. If the file exists, write data to the end of the file (the original content of the file is reserved).|
| Name | Type | Mandatory | Description |
| ---- | ------ | ---- | ---------------------------------------- |
| fd | number | Yes | FD of the file. |
| mode | string | Yes | - **r**: Open a file for reading. The file must exist.<br>- **r+**: Open a file for both reading and writing. The file must exist.<br>- **w**: Open a file for writing. If the file exists, clear its content. If the file does not exist, create a file.<br>- **w+**: Open a file for both reading and writing. If the file exists, clear its content. If the file does not exist, create a file.<br>- **a**: Open a file in append mode for writing at the end of the file. If the file does not exist, create a file. If the file exists, write data to the end of the file (the original content of the file is reserved).<br>- **a+**: Open a file in append mode for reading or updating at the end of the file. If the file does not exist, create a file. If the file exists, write data to the end of the file (the original content of the file is reserved).|
**Return value**
| Type | Description |
| ------------------ | --------- |
| [Stream](#stream) | Stream opened.|
| Type | Description |
| ------------------ | --------- |
| [Stream](#stream) | Stream opened.|
**Example**
......@@ -1840,7 +1840,7 @@ Represents detailed file information. Before calling any API of the **Stat()** c
### Attributes
| Name | Type | Readable | Writable | Description |
| ------ | ------ | ---- | ---- | ---------------------------------------- |
| ------ | ------ | ---- | ---- | ---------------------------------------- |
| ino | number | Yes | No | File ID. Different files on the same device have different **ino**s.| |
| mode | number | Yes | No | File permissions. The meaning of each bit is as follows:<br>- **0o400**: The owner has the read permission on a regular file or a directory entry.<br>- **0o200**: The owner has the permission to write a regular file or create and delete a directory entry.<br>- **0o100**: The owner has the permission to execute a regular file or search for the specified path in a directory.<br>- **0o040**: The user group has the read permission on a regular file or a directory entry.<br>- **0o020**: The user group has the permission to write a regular file or create and delete a directory entry.<br>- **0o010**: The user group has the permission to execute a regular file or search for the specified path in a directory.<br>- **0o004**: Other users have the permission to read a regular file or read a directory entry.<br>- **0o002**: Other users have the permission to write a regular file or create and delete a directory entry.<br>- **0o001**: Other users have the permission to execute a regular file or search for the specified path in a directory.|
| uid | number | Yes | No | ID of the file owner.|
......@@ -1861,9 +1861,9 @@ Checks whether this file is a block special file. A block special file supports
**Return value**
| Type | Description |
| ------- | ---------------- |
| boolean | Whether the file is a block special file.|
| Type | Description |
| ------- | ---------------- |
| boolean | Whether the file is a block special file.|
**Example**
......@@ -1882,9 +1882,9 @@ Checks whether this file is a character special file. A character special file s
**Return value**
| Type | Description |
| ------- | ----------------- |
| boolean | Whether the file is a character special file.|
| Type | Description |
| ------- | ----------------- |
| boolean | Whether the file is a character special file.|
**Example**
......@@ -1904,9 +1904,9 @@ Checks whether this file is a directory.
**Return value**
| Type | Description |
| ------- | ------------- |
| boolean | Whether the file is a directory.|
| Type | Description |
| ------- | ------------- |
| boolean | Whether the file is a directory.|
**Example**
......@@ -1926,9 +1926,9 @@ Checks whether this file is a named pipe (or FIFO). Named pipes are used for int
**Return value**
| Type | Description |
| ------- | --------------------- |
| boolean | Whether the file is a FIFO.|
| Type | Description |
| ------- | --------------------- |
| boolean | Whether the file is a FIFO.|
**Example**
......@@ -1948,9 +1948,9 @@ Checks whether this file is a regular file.
**Return value**
| Type | Description |
| ------- | --------------- |
| boolean | Whether the file is a regular file.|
| Type | Description |
| ------- | --------------- |
| boolean | Whether the file is a regular file.|
**Example**
......@@ -1970,9 +1970,9 @@ Checks whether this file is a socket.
**Return value**
| Type | Description |
| ------- | -------------- |
| boolean | Whether the file is a socket.|
| Type | Description |
| ------- | -------------- |
| boolean | Whether the file is a socket.|
**Example**
......@@ -1992,9 +1992,9 @@ Checks whether this file is a symbolic link.
**Return value**
| Type | Description |
| ------- | --------------- |
| boolean | Whether the file is a symbolic link.|
| Type | Description |
| ------- | --------------- |
| boolean | Whether the file is a symbolic link.|
**Example**
......@@ -2018,9 +2018,9 @@ Closes the stream. This API uses a promise to return the result.
**Return value**
| Type | Description |
| ------------------- | ------------- |
| Promise&lt;void&gt; | Promise used to return the stream close result.|
| Type | Description |
| ------------------- | ------------- |
| Promise&lt;void&gt; | Promise used to return the stream close result.|
**Example**
......@@ -2045,9 +2045,9 @@ Closes the stream. This API uses an asynchronous callback to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
| -------- | ------------------------- | ---- | ------------- |
| callback | AsyncCallback&lt;void&gt; | Yes | Callback invoked when the stream is closed asynchronously.|
| Name | Type | Mandatory | Description |
| -------- | ------------------------- | ---- | ------------- |
| callback | AsyncCallback&lt;void&gt; | Yes | Callback invoked when the stream is closed asynchronously.|
**Example**
......@@ -2089,9 +2089,9 @@ Flushes the stream. This API uses a promise to return the result.
**Return value**
| Type | Description |
| ------------------- | ------------- |
| Promise&lt;void&gt; | Promise used to return the stream flushing result.|
| Type | Description |
| ------------------- | ------------- |
| Promise&lt;void&gt; | Promise used to return the stream flushing result.|
**Example**
......@@ -2116,9 +2116,9 @@ Flushes the stream. This API uses an asynchronous callback to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
| -------- | ------------------------- | ---- | -------------- |
| callback | AsyncCallback&lt;void&gt; | Yes | Callback invoked when the stream is asynchronously flushed.|
| Name | Type | Mandatory | Description |
| -------- | ------------------------- | ---- | -------------- |
| callback | AsyncCallback&lt;void&gt; | Yes | Callback invoked when the stream is asynchronously flushed.|
**Example**
......@@ -2160,16 +2160,16 @@ Writes data into the stream. This API uses a promise to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
| ------- | ------------------------------- | ---- | ---------------------------------------- |
| buffer | ArrayBuffer\|string | Yes | Data to write. It can be a string or data from a buffer. |
| options | Object | No | The options are as follows:<br>- **length** (number): length of the data to write. The default value is the buffer length.<br>- **offset** (number): start position to write the data in the file. This parameter is optional. By default, data is written from the current position.<br>- **encoding** (string): format of the data to be encoded when the data is a string. The default value is **'utf-8'**, which is the only value supported.|
| Name | Type | Mandatory | Description |
| ------- | ------------------------------- | ---- | ---------------------------------------- |
| buffer | ArrayBuffer\|string | Yes | Data to write. It can be a string or data from a buffer. |
| options | Object | No | The options are as follows:<br>- **length** (number): length of the data to write. The default value is the buffer length.<br>- **offset** (number): start position to write the data in the file. This parameter is optional. By default, data is written from the current position.<br>- **encoding** (string): format of the data to be encoded when the data is a string. The default value is **'utf-8'**, which is the only value supported.|
**Return value**
| Type | Description |
| --------------------- | -------- |
| Promise&lt;number&gt; | Promise used to return the length of the data written.|
| Type | Description |
| --------------------- | -------- |
| Promise&lt;number&gt; | Promise used to return the length of the data written.|
**Example**
......@@ -2194,11 +2194,11 @@ Writes data into the stream. This API uses an asynchronous callback to return th
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | ------------------------------- | ---- | ------------------------------------------------------------ |
| buffer | ArrayBuffer\|string | Yes | Data to write. It can be a string or data from a buffer. |
| options | Object | No | The options are as follows:<br>- **length** (number): length of the data to write. This parameter is optional. The default value is the buffer length.<br>- **offset** (number): start position to write the data in the file. This parameter is optional. By default, data is written from the current position.<br>- **encoding** (string): format of the data to be encoded when the data is a string. The default value is **'utf-8'**, which is the only value supported.|
| callback | AsyncCallback&lt;number&gt; | Yes | Callback invoked when the data is written asynchronously. |
| Name | Type | Mandatory| Description |
| -------- | ------------------------------- | ---- | ------------------------------------------------------------ |
| buffer | ArrayBuffer\|string | Yes | Data to write. It can be a string or data from a buffer. |
| options | Object | No | The options are as follows:<br>- **length** (number): length of the data to write. This parameter is optional. The default value is the buffer length.<br>- **offset** (number): start position to write the data in the file. This parameter is optional. By default, data is written from the current position.<br>- **encoding** (string): format of the data to be encoded when the data is a string. The default value is **'utf-8'**, which is the only value supported.|
| callback | AsyncCallback&lt;number&gt; | Yes | Callback invoked when the data is written asynchronously. |
**Example**
......@@ -2226,16 +2226,16 @@ Synchronously writes data into the stream.
**Parameters**
| Name | Type | Mandatory | Description |
| ------- | ------------------------------- | ---- | ---------------------------------------- |
| buffer | ArrayBuffer\|string | Yes | Data to write. It can be a string or data from a buffer. |
| options | Object | No | The options are as follows:<br>- **length** (number): length of the data to write. This parameter is optional. The default value is the buffer length.<br>- **offset** (number): start position to write the data in the file. This parameter is optional. By default, data is written from the current position.<br>- **encoding** (string): format of the data to be encoded when the data is a string. The default value is **'utf-8'**, which is the only value supported.|
| Name | Type | Mandatory | Description |
| ------- | ------------------------------- | ---- | ---------------------------------------- |
| buffer | ArrayBuffer\|string | Yes | Data to write. It can be a string or data from a buffer. |
| options | Object | No | The options are as follows:<br>- **length** (number): length of the data to write. This parameter is optional. The default value is the buffer length.<br>- **offset** (number): start position to write the data in the file. This parameter is optional. By default, data is written from the current position.<br>- **encoding** (string): format of the data to be encoded when the data is a string. The default value is **'utf-8'**, which is the only value supported.|
**Return value**
| Type | Description |
| ------ | -------- |
| number | Length of the data written in the file.|
| Type | Description |
| ------ | -------- |
| number | Length of the data written in the file.|
**Example**
......@@ -2255,16 +2255,16 @@ Reads data from the stream. This API uses a promise to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
| ------- | ----------- | ---- | ---------------------------------------- |
| buffer | ArrayBuffer | Yes | Buffer used to store the file read. |
| options | Object | No | The options are as follows:<br>- **length** (number): length of the data to read. This parameter is optional. The default value is the buffer length.<br>- **offset** (number): position of the data to read in the file. By default, data is read from the current position.|
| Name | Type | Mandatory | Description |
| ------- | ----------- | ---- | ---------------------------------------- |
| buffer | ArrayBuffer | Yes | Buffer used to store the file read. |
| options | Object | No | The options are as follows:<br>- **length** (number): length of the data to read. This parameter is optional. The default value is the buffer length.<br>- **offset** (number): position of the data to read in the file. By default, data is read from the current position.|
**Return value**
| Type | Description |
| ---------------------------------- | ------ |
| Promise&lt;number&gt; | Promise used to return the data read.|
| Type | Description |
| ---------------------------------- | ------ |
| Promise&lt;number&gt; | Promise used to return the data read.|
**Example**
......@@ -2274,7 +2274,7 @@ Reads data from the stream. This API uses a promise to return the result.
let buf = new ArrayBuffer(4096);
ss.read(buf, {offset: 5, length: 5}).then((readLen) => {
console.info("Read data successfully");
console.log(String.fromCharCode.apply(null, new Uint8Array(buf)));
console.log(String.fromCharCode.apply(null, new Uint8Array(buf.slice(0, readLen))));
}).catch((err) => {
console.info("read data failed with error message: " + err.message + ", error code: " + err.code);
});
......@@ -2291,11 +2291,11 @@ Reads data from the stream. This API uses an asynchronous callback to return the
**Parameters**
| Name | Type | Mandatory | Description |
| -------- | ---------------------------------------- | ---- | ---------------------------------------- |
| buffer | ArrayBuffer | Yes | Buffer used to store the file read. |
| options | Object | No | The options are as follows:<br>- **length** (number): length of the data to read. This parameter is optional. The default value is the buffer length.<br>- **offset** (number): position of the data to read in the file. This parameter is optional. By default, data is read from the current position.|
| callback | AsyncCallback&lt;number&gt; | Yes | Callback invoked when data is read asynchronously from the stream. |
| Name | Type | Mandatory | Description |
| -------- | ---------------------------------------- | ---- | ---------------------------------------- |
| buffer | ArrayBuffer | Yes | Buffer used to store the file read. |
| options | Object | No | The options are as follows:<br>- **length** (number): length of the data to read. This parameter is optional. The default value is the buffer length.<br>- **offset** (number): position of the data to read in the file. This parameter is optional. By default, data is read from the current position.|
| callback | AsyncCallback&lt;number&gt; | Yes | Callback invoked when data is read asynchronously from the stream. |
**Example**
......@@ -2308,7 +2308,7 @@ Reads data from the stream. This API uses an asynchronous callback to return the
console.info("read stream failed with error message: " + err.message + ", error code: " + err.code);
} else {
console.info("Read data successfully");
console.log(String.fromCharCode.apply(null, new Uint8Array(buf)));
console.log(String.fromCharCode.apply(null, new Uint8Array(buf.slice(0, readLen))));
}
});
```
......@@ -2323,16 +2323,16 @@ Synchronously reads data from the stream.
**Parameters**
| Name | Type | Mandatory | Description |
| ------- | ----------- | ---- | ---------------------------------------- |
| buffer | ArrayBuffer | Yes | Buffer used to store the file read. |
| Name | Type | Mandatory | Description |
| ------- | ----------- | ---- | ---------------------------------------- |
| buffer | ArrayBuffer | Yes | Buffer used to store the file read. |
| options | Object | No | The options are as follows:<br>- **length** (number): length of the data to read. This parameter is optional. The default value is the buffer length.<br>- **offset** (number): position of the data to read in the file. This parameter is optional. By default, data is read from the current position.<br> |
**Return value**
| Type | Description |
| ------ | -------- |
| number | Length of the data read.|
| Type | Description |
| ------ | -------- |
| number | Length of the data read.|
**Example**
......
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