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IO API

Contents

IO related functions.

Usage

Add the following to your build.gradle file:

dependencies {
  include "com.enonic.xp:lib-io:${xpVersion}"
}

Add the import statement to your controller:

import ioLib from '/lib/xp/io';

You are now ready to use the API.

Functions

getMimeType

Returns the mime-type from a name or extension.

Parameters

Name Type Description

name

string

Name of file or extension

Returns

string : mime-type from a name or extension.

Example

import {getMimeType} from '/lib/xp/io';

// Returns mime-type for a file name.
const type = getMimeType('myfile.txt');
log.info('Mime type is %s', type);

getResource

Looks up a resource.

Parameters

Name Type Description

key

string

Resource key to look up

Returns

Resource : Resource reference.

Examples

import {getResource} from '/lib/xp/io';

// Returns a file by name.
const res1 = getResource('/lib/xp/examples/io/sample.txt');
const exists = res1.exists();
const size = res1.getSize();
const stream = res1.getStream();
import {getResource} from '/lib/xp/io';

// Returns a file by reference.
const res2 = getResource(resolve('./sample.txt'));
if (res2.exists()) {
    log.info('Resource exists');
}

getSize

Returns the size of a stream.

Parameters

Name Type Description

stream

Stream to get size of

Returns

number : Returns the size of a stream.

Example

import {getSize} from '/lib/xp/io';

// Returns the size of a stream.
const size = getSize(stream);
log.info('Stream size is %s bytes', size);

newStream

Returns a new stream from a string.

Parameters

Name Type Description

text

string

String to create a stream of

Returns

* : A new stream.

Example

import {newStream} from '/lib/xp/io';

// Creates a new stream from a string.
const stream = newStream('Hello World');

processLines

Process lines from a stream.

Parameters

Name Type Description

stream

Stream to read lines from

func

function

Callback function to be called for each line

Example

import {processLines} from '/lib/xp/io';

let num = 0;

// Process lines from stream.
processLines(stream, (line) => {
    num++;
    log.info('Line %s: %s', num, line);
});

readLines

Reads lines from a stream.

Parameters

Name Type Description

stream

A stream to read lines from

Returns

string[] : Lines as an array.

Example

import {readLines} from '/lib/xp/io';

// Reads lines from stream.
const lines = readLines(stream);
log.info('Num lines: %s', lines.length);

readText

Reads text from a stream.

Parameters

Name Type Description

stream

A stream to read text from

Returns

string : Text read from a stream or a string.

Example

import {readText} from '/lib/xp/io';

// Reads text from stream.
const text = readText(stream);
log.info('Text: %s', text);

Contents

Contents

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