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Static Public Member Functions | Public Attributes
JavaScriptMinifier Class Reference

JavaScript Minifier. More...

List of all members.

Static Public Member Functions

static minify ($s, $statementsOnOwnLine=false, $maxLineLength=1000)
 Returns minified JavaScript code.
static parseError ($fullJavascript, $position, $errorMsg)

Public Attributes

const CONDITION = 1
const EXPRESSION = 3
const EXPRESSION_FUNC = 6
const EXPRESSION_NO_NL = 4
const EXPRESSION_OP = 5
const EXPRESSION_TERNARY = 7
const EXPRESSION_TERNARY_FUNC = 9
const EXPRESSION_TERNARY_OP = 8
const PAREN_EXPRESSION = 10
const PAREN_EXPRESSION_FUNC = 12
const PAREN_EXPRESSION_OP = 11
const PROPERTY_ASSIGNMENT = 2
const PROPERTY_EXPRESSION = 13
const PROPERTY_EXPRESSION_FUNC = 15
const PROPERTY_EXPRESSION_OP = 14
const STACK_LIMIT = 1000
const STATEMENT = 0
const TYPE_ADD_OP = 4
const TYPE_BIN_OP = 3
const TYPE_BRACE_CLOSE = 10
const TYPE_BRACE_OPEN = 9
const TYPE_COLON = 6
const TYPE_COMMA = 7
const TYPE_DO = 15
const TYPE_FUNC = 16
const TYPE_HOOK = 5
const TYPE_IF = 14
const TYPE_INCR_OP = 2
const TYPE_LITERAL = 17
const TYPE_PAREN_CLOSE = 12
const TYPE_PAREN_OPEN = 11
const TYPE_RETURN = 13
const TYPE_SEMICOLON = 8
const TYPE_UN_OP = 1

Detailed Description

JavaScript Minifier.

This class is meant to safely minify javascript code, while leaving syntactically correct programs intact. Other libraries, such as JSMin require a certain coding style to work correctly. OTOH, libraries like jsminplus, that do parse the code correctly are rather slow, because they construct a complete parse tree before outputting the code minified. So this class is meant to allow arbitrary (but syntactically correct) input, while being fast enough to be used for on-the-fly minifying.

Author: Paul Copperman <[email protected]> License: choose any of Apache, MIT, GPL, LGPL

Definition at line 16 of file JavaScriptMinifier.php.

Member Function Documentation

static JavaScriptMinifier::minify ( $  s,
$  statementsOnOwnLine = false,
$  maxLineLength = 1000 
) [static]

Returns minified JavaScript code.

NOTE: $maxLineLength isn't a strict maximum. Longer lines will be produced when literals (e.g. quoted strings) longer than $maxLineLength are encountered or when required to guard against semicolon insertion.

Parameters:
$sString JavaScript code to minify
$statementsOnOwnLineBool Whether to put each statement on its own line
$maxLineLengthInt Maximum length of a single line, or -1 for no maximum.
Returns:
String Minified code

Definition at line 78 of file JavaScriptMinifier.php.

References $out, parseError(), STATEMENT, and TYPE_LITERAL.

Referenced by ResourceLoader\filter(), JavaScriptMinifierTest\testBug32548Exponent(), and JavaScriptMinifierTest\testJavaScriptMinifierOutput().

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static JavaScriptMinifier::parseError ( $  fullJavascript,
$  position,
$  errorMsg 
) [static]

Definition at line 600 of file JavaScriptMinifier.php.

Referenced by minify().

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Member Data Documentation

const JavaScriptMinifier::CONDITION = 1

Definition at line 26 of file JavaScriptMinifier.php.

const JavaScriptMinifier::EXPRESSION = 3

Definition at line 28 of file JavaScriptMinifier.php.

const JavaScriptMinifier::EXPRESSION_FUNC = 6

Definition at line 31 of file JavaScriptMinifier.php.

const JavaScriptMinifier::EXPRESSION_NO_NL = 4

Definition at line 29 of file JavaScriptMinifier.php.

const JavaScriptMinifier::EXPRESSION_OP = 5

Definition at line 30 of file JavaScriptMinifier.php.

const JavaScriptMinifier::EXPRESSION_TERNARY = 7

Definition at line 32 of file JavaScriptMinifier.php.

const JavaScriptMinifier::EXPRESSION_TERNARY_FUNC = 9

Definition at line 34 of file JavaScriptMinifier.php.

const JavaScriptMinifier::EXPRESSION_TERNARY_OP = 8

Definition at line 33 of file JavaScriptMinifier.php.

const JavaScriptMinifier::PAREN_EXPRESSION = 10

Definition at line 35 of file JavaScriptMinifier.php.

const JavaScriptMinifier::PAREN_EXPRESSION_FUNC = 12

Definition at line 37 of file JavaScriptMinifier.php.

const JavaScriptMinifier::PAREN_EXPRESSION_OP = 11

Definition at line 36 of file JavaScriptMinifier.php.

const JavaScriptMinifier::PROPERTY_ASSIGNMENT = 2

Definition at line 27 of file JavaScriptMinifier.php.

const JavaScriptMinifier::PROPERTY_EXPRESSION = 13

Definition at line 38 of file JavaScriptMinifier.php.

const JavaScriptMinifier::PROPERTY_EXPRESSION_FUNC = 15

Definition at line 40 of file JavaScriptMinifier.php.

const JavaScriptMinifier::PROPERTY_EXPRESSION_OP = 14

Definition at line 39 of file JavaScriptMinifier.php.

const JavaScriptMinifier::STACK_LIMIT = 1000

Definition at line 62 of file JavaScriptMinifier.php.

const JavaScriptMinifier::STATEMENT = 0

Definition at line 25 of file JavaScriptMinifier.php.

Referenced by minify().

const JavaScriptMinifier::TYPE_ADD_OP = 4

Definition at line 46 of file JavaScriptMinifier.php.

const JavaScriptMinifier::TYPE_BIN_OP = 3

Definition at line 45 of file JavaScriptMinifier.php.

const JavaScriptMinifier::TYPE_BRACE_CLOSE = 10

Definition at line 52 of file JavaScriptMinifier.php.

const JavaScriptMinifier::TYPE_BRACE_OPEN = 9

Definition at line 51 of file JavaScriptMinifier.php.

const JavaScriptMinifier::TYPE_COLON = 6

Definition at line 48 of file JavaScriptMinifier.php.

const JavaScriptMinifier::TYPE_COMMA = 7

Definition at line 49 of file JavaScriptMinifier.php.

const JavaScriptMinifier::TYPE_DO = 15

Definition at line 57 of file JavaScriptMinifier.php.

const JavaScriptMinifier::TYPE_FUNC = 16

Definition at line 58 of file JavaScriptMinifier.php.

const JavaScriptMinifier::TYPE_HOOK = 5

Definition at line 47 of file JavaScriptMinifier.php.

const JavaScriptMinifier::TYPE_IF = 14

Definition at line 56 of file JavaScriptMinifier.php.

const JavaScriptMinifier::TYPE_INCR_OP = 2

Definition at line 44 of file JavaScriptMinifier.php.

const JavaScriptMinifier::TYPE_LITERAL = 17

Definition at line 59 of file JavaScriptMinifier.php.

Referenced by minify().

const JavaScriptMinifier::TYPE_PAREN_CLOSE = 12

Definition at line 54 of file JavaScriptMinifier.php.

const JavaScriptMinifier::TYPE_PAREN_OPEN = 11

Definition at line 53 of file JavaScriptMinifier.php.

const JavaScriptMinifier::TYPE_RETURN = 13

Definition at line 55 of file JavaScriptMinifier.php.

const JavaScriptMinifier::TYPE_SEMICOLON = 8

Definition at line 50 of file JavaScriptMinifier.php.

const JavaScriptMinifier::TYPE_UN_OP = 1

Definition at line 43 of file JavaScriptMinifier.php.

The documentation for this class was generated from the following file: