hexo-util

util

Utilities for Hexo.

Installation

$ npm install hexo-util --save

Usage

var util = require('hexo-util');

escapeRegex(str)

Escapes special characters in a regular expression.

escapeDiacritic(str)

Escapes diacritic characters in a string.

escapeHTML(str)

Escapes HTML entities in a string.

highlight(str, [options])

Syntax highlighting for a code block.

Option	Description	Default
gutter	Whether to show line numbers	true
wrap	Whether to wrap the code block	true
first_line	First line number	1
lang	Language (Auto detect if not defined)
caption	Caption
tab	Replace tabs

htmlTag(tag, attrs, text)

Creates a html tag.

htmlTag('img', {src: 'example.png'})
// <img src="example.png">

htmlTag('a', {href: 'http://hexo.io/'}, 'Hexo')
// <a href="http://hexo.io/">Hexo</a>

Pattern(rule)

Parses the string and tests if the string matches the rule. rule can be a string, a regular expression or a function.

var pattern = new Pattern('posts/:id');

pattern.match('posts/89');
// {0: 'posts/89', 1: '89', id: '89'}

var pattern = new Pattern('posts/*path');

pattern.match('posts/2013/hello-world');
// {0: 'posts/2013/hello-world', 1: '2013/hello-world', path: '2013/hello-world'}

Permalink(rule, [options])

Parses a permalink.

Option	Description
segments	Customize the rule of a segment in the permalink

var permalink = new Permalink(':year/:month/:day/:title', {
  segments: {
    year: /(\d{4})/,
    month: /(\d{2})/,
    day: /(\d{2})/
  }
});

permalink.parse('2014/01/31/test');
// {year: '2014', month: '01', day: '31', title: 'test'}

permalink.test('2014/01/31/test');
// true

permalink.stringify({year: '2014', month: '01', day: '31', title: 'test'})
// 2014/01/31/test

slugize(str, [options])

Transforms a string into a clean URL-friendly string.

Option	Description	Default
separator	Separator	-
transform	Transform the string into lower case (1) or upper case (2)

slugize('Hello World') = 'Hello-World'
slugize('Hellô Wòrld') = 'Hello-World'
slugize('Hello World', {separator: '_'}) = 'Hello_World'
slugize('Hello World', {transform: 1}) = 'hello-world'
slugize('Hello World', {transform: 2}) = 'HELLO-WORLD'

spawn(command, [args], [options])

Launches a new process with the given command. This method returns a promise.

Option	Description	Default
cwd	Current working directory of the child process
env	Environment key-value pairs
stdio	Child's stdio configuration
detached	The child will be a process group leader
uid	Sets the user identity of the process
gid	Sets the group identity of the process
verbose	Display messages on the console	false
encoding	Sets the encoding of the output string	utf8

spawn('cat', 'test.txt').then(function(content){
  console.log(content);
});

stripHTML(str)

Removes HTML tags in a string.

wordWrap(str, [options])

Wraps the string no longer than line width. This method breaks on the first whitespace character that does not exceed line width.

Option	Description	Default
width	Line width	80

wordWrap('Once upon a time')
// Once upon a time

wordWrap('Once upon a time, in a kingdom called Far Far Away, a king fell ill, and finding a successor to the throne turned out to be more trouble than anyone could have imagined...')
// Once upon a time, in a kingdom called Far Far Away, a king fell ill, and finding\na successor to the throne turned out to be more trouble than anyone could have\nimagined...

wordWrap('Once upon a time', {width: 8})
// Once\nupon a\ntime

wordWrap('Once upon a time', {width: 1})
// Once\nupon\na\ntime

truncate(str, [options])

Truncates a given text after a given length if text is longer than length. The last characters will be replaced with the omission option for a total length not exceeding length.

Option	Description	Default
length	Max length of the string	30
omission	Omission text	...
separator	truncate text at a natural break

truncate('Once upon a time in a world far far away')
// "Once upon a time in a world..."

truncate('Once upon a time in a world far far away', {length: 17})
// "Once upon a ti..."

truncate('Once upon a time in a world far far away', {length: 17, separator: ' '})
// "Once upon a..."

truncate('And they found that many people were sleeping better.', {length: 25, omission: '... (continued)'})
// "And they f... (continued)"

License

MIT