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+ MyMin.php + unit test (currently failing)

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improved before.js and added HTML test page
This commit is contained in:
Steve Clay
2008-10-20 21:00:12 +00:00
parent 68a16de09c
commit 717399a062
6 changed files with 362 additions and 21 deletions
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289
min/lib/MyMin.php Normal file
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@@ -0,0 +1,289 @@
<?php
/**
* MyMin - JSMin like alternative parser for JavaScript
*
* This class is a jsmin alternative, based on same parser logic but modified
* to mantain performances and to parse correctly JavaScript conditional comments too.
*
* SERVER SIDE
* PHP 5 or greater is required.
* This code is compatible with every error_reporting level (E_ALL | E_STRICT)
* The best practice to use this code is caching results without run-time
* evaluation (your server should be stressed too much with big files)
*
* Permission is hereby granted to use this version of the library under the
* same terms as jsmin.php, which has the following license:
*
* --
* Copyright (c) 2002 Douglas Crockford (www.crockford.com)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is furnished to do
* so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* The Software shall be used for Good, not Evil.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
* --
*
* @class MyMin
* @author Andrea Giammarchi <http://www.3site.eu>
* @copyright 2002 Douglas Crockford <douglas@crockford.com> (jsmin.c)
* @copyright 2007 Ryan Grove <ryan@wonko.com> (PHP port)
* @copyright 2007 Andrea Giammarchi (improvements + MyMinCompressor + MyMinCSS)
* @license http://opensource.org/licenses/mit-license.php MIT License
* @version 1.0.1 (2007-10-05) - updated 2008-02-17
*/
// -- Class MyMin --------------------------------------------------------------
class MyMin {
const /* char */ LF = "\n",
SPACE = ' ',
EOS = "\x00";
protected /* boolean */ $cc_on;
protected /* char */ $a,
$ahead,
$b;
protected /* int */ $index = 0,
$length;
protected /* string */ $input,
$output = "";
// -- Public Static Methods ----------------------------------------------------
static public final function /* string */ parse(/* string */ $input, /* boolean */ $cc_on = true){
return "".(new MyMin($input, $cc_on));
}
// -- Public Instance Methods --------------------------------------------------
public final function /* object */ __construct(/* string */ $input, /* boolean */ $cc_on = true){
$this->input = preg_replace("/(\r\n|\n\r|\r|\n)+/", self::LF, trim($input));
$this->length = strlen($this->input);
$this->cc_on = $cc_on;
$this->b = $this->ahead = self::SPACE;
$this->a = self::LF;
$this->action(3);
while($this->a !== self::EOS){
switch($this->a){
case self::SPACE:
$this->action($this->isAlNum($this->b) ? 1 : 2);
break;
case self::LF:
switch($this->b){
case '{':
case '[':
case '(':
case '+':
case '-':
$this->action(1);
break;
case self::SPACE:
$this->action(3);
break;
default:
$this->action($this->isAlNum($this->b) ? 1 : 2);
break;
}
break;
default:
switch($this->b){
case self::SPACE:
$this->action($this->isAlNum($this->a) ? 1 : 3);
break;
case self::LF:
switch($this->a){
case '}':
case ']':
case ')':
case '+':
case '-':
case '"':
case '\'':
$this->action(1);
break;
default:
$this->action($this->isAlNum($this->a) ? 1 : 3);
break;
}
break;
default:
$this->action(1);
break;
}
break;
}
}
}
public final function /* string */ __toString(/* void */){
return str_replace("\n\n", "\n", ltrim($this->output));
}
// -- Protected Instance Methods -----------------------------------------------
protected function /* void */ action(/* int */ $i){
switch($i){
case 1:
$this->output .= $this->a;
case 2:
$this->a = $this->b;
if($this->a === '\'' || $this->a === '"'){
while(true){
$this->output .= $this->a;
if(!$this->nextCharNoSlash($this->b, "Unterminated string literal."))
break;
}
}
case 3:
$this->b = $this->next();
if($this->b === '/'){
switch($this->a){
case self::LF:
case self::SPACE:
if(!$this->spaceBeforeRegExp($this->output))
break;
case '{':
case ';':
case '(':
case ',':
case '=':
case ':':
case '[':
case '!':
case '&':
case '|':
case '?':
$this->output .= $this->a.$this->b;
while($this->nextCharNoSlash('/', "Unterminated regular expression literal."))
$this->output .= $this->a;
$this->b = $this->next();
break;
}
}
break;
}
}
protected function /* void */ appendComment(/* int */ $pos, /* string */ $open, /* string */ $close) {
$this->output .= $this->a.$open.(new MyMin(substr($this->input, $this->index, $pos - $this->index), $this->cc_on)).$close;
$this->index = $pos;
$this->a = self::LF;
}
protected function /* void */ conditionalComment(/* char */ $find) {
$single = $find === self::LF;
$pos = strpos($this->input, $find, $this->index);
if($pos === false){
if($single)
$pos = $this->length;
else
throw new MyMinException("Unterminated comment.");
}
$this->appendComment($pos, $single ? "//" : "/*", $find);
}
protected function /* char */ get(/* void */) {
$c = $this->ahead;
$this->ahead = self::EOS;
if($c === self::EOS && $this->index < $this->length)
$c = $this->input{$this->index++};
return ($c === self::EOS || $c === self::LF || $c >= self::SPACE) ? $c : self::SPACE;
}
protected function /* boolean */ isAlNum(/* char */ $c) {
return $c > 126 || $c === '\\' || preg_match('/^(\w|\$)$/', $c);
}
protected function /* char */ next(/* void */) {
$c = $this->get();
$loop = true;
if($c === '/'){
switch($this->ahead = $this->get()){
case '/':
if($this->cc_on && $this->input{$this->index} === '@')
$this->conditionalComment(self::LF);
while($loop){
$c = $this->get();
if($c <= self::LF)
$loop = false;
}
break;
case '*':
$this->get();
if($this->cc_on && $this->input{$this->index} === '@')
$this->conditionalComment("*/");
while($loop){
switch($this->get()){
case '*':
if(($this->ahead = $this->get()) === '/'){
$this->get();
$c = self::SPACE;
$loop = false;
}
break;
case self::EOS:
throw new MyMinException("Unterminated comment.");
}
}
break;
}
}
return $c;
}
protected function /* boolean */ nextCharNoSlash(/* char */ $c, /* string */ $message) {
$loop = true;
$this->a = $this->get();
if($this->a === $c)
$loop = false;
else{
if($this->a === '\\'){
$this->output .= $this->a;
$this->a = $this->get();
}
if($this->a <= self::LF)
throw new MyMinException($message);
}
return $loop;
}
protected function /* boolean */ spaceBeforeRegExp(/* string */ $output){
for(
$i = 0,
$length = strlen($output),
$reserved = array("case", "else", "in", "return", "typeof"),
$result = false,
$tmp = "";
$i < 5 && !$result;
$i++
){
if($length === strlen($reserved[$i]))
$result = $reserved[$i] === $output;
else if($length > strlen($reserved[$i])){
$tmp = substr($output, $length - strlen($reserved[$i]) - 1);
$result = substr($tmp, 1) === $reserved[$i] && !$this->isAlNum($tmp{0});
}
};
return $length < 2 ? true : $result;
}
}
// -- MyMin Exceptions ---------------------------------------------------------
class MyMinException extends Exception {}

18
min_unit_tests/_test_files/js/before.js
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@@ -36,14 +36,22 @@ if (is.ua.indexOf('gecko') >= 0) {
/*@cc_on
/*@if (@_win32)
document.write("OS is 32-bit, browser is IE.");
if (is.ie && is.win)
document.write("PASS: IE/win honored conditional comment.<br>");
@else @*/
document.write("Browser is not IE (ie: is Firefox) or Browser is not 32 bit IE.");
if (is.ie && is.win)
document.write("FAIL: IE/win did not honor multi-line conditional comment.<br>");
else
document.write("PASS: Non-IE/win browser ignores multi-line conditional comment.<br>");
/*@end
@*/
var recognizesCondComm = true;
//@cc_on/*
alert("Hello !IE browser");
recognizesCondComm = false;
//@cc_on*/
if ((is.ie && is.win) == recognizesCondComm)
document.write("PASS: IE/win honored single-line conditional comment.<br>");
else
document.write("FAIL: Non-IE/win browser did not ignore single-line conditional comment.<br>");

14
min_unit_tests/_test_files/js/before.min.js vendored
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@@ -10,7 +10,13 @@ var is={ie:navigator.appName=='Microsoft Internet Explorer',java:navigator.javaE
is.mac=is.ua.indexOf('mac')>=0;if(is.ua.indexOf('opera')>=0){is.ie=is.ns=false;is.opera=true;}
if(is.ua.indexOf('gecko')>=0){is.ie=is.ns=false;is.gecko=true;}/*@cc_on
/*@if (@_win32)
document.write("OS is 32-bit, browser is IE.");
@else @*/document.write("Browser is not IE (ie: is Firefox) or Browser is not 32 bit IE.");/*@end
@*///@cc_on/*
alert("Hello !IE browser");//@cc_on*/
if (is.ie && is.win)
document.write("PASS: IE/win honored conditional comment.<br>");
@else @*/if(is.ie&&is.win)
document.write("FAIL: IE/win did not honor multi-line conditional comment.<br>");else
document.write("PASS: Non-IE/win browser ignores multi-line conditional comment.<br>");/*@end
@*/var recognizesCondComm=true;//@cc_on/*
recognizesCondComm=false;//@cc_on*/
if((is.ie&&is.win)==recognizesCondComm)
document.write("PASS: IE/win honored single-line conditional comment.<br>");else
document.write("FAIL: Non-IE/win browser did not ignore single-line conditional comment.<br>");

35
min_unit_tests/_test_files/minify/lines_output.js
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@@ -246,15 +246,26 @@
/* 36 */
/* 37 */ /*@cc_on
/* 38 *| /*@if (@_win32)
/* 39 *| document.write("OS is 32-bit, browser is IE.");
/* 40 *| @else @*/
/* 41 */ document.write("Browser is not IE (ie: is Firefox) or Browser is not 32 bit IE.");
/* 42 */ /*@end
/* 43 *| @*/
/* 44 */
/* 45 */ //@cc_on/*
/* 46 *|
/* 47 *| alert("Hello !IE browser");
/* 48 *|
/* 49 *| //@cc_on*/
/* 50 */
/* 39 *| if (is.ie && is.win)
/* 40 *| document.write("PASS: IE/win honored conditional comment.<br>");
/* 41 *| @else @*/
/* 42 */ if (is.ie && is.win)
/* 43 */ document.write("FAIL: IE/win did not honor multi-line conditional comment.<br>");
/* 44 */ else
/* 45 */ document.write("PASS: Non-IE/win browser ignores multi-line conditional comment.<br>");
/* 46 */ /*@end
/* 47 *| @*/
/* 48 */
/* 49 */ var recognizesCondComm = true;
/* 50 */ //@cc_on/*
/* before.js */
/* 51 *| recognizesCondComm = false;
/* 52 *| //@cc_on*/
/* 53 */
/* 54 */ if ((is.ie && is.win) == recognizesCondComm)
/* 55 */ document.write("PASS: IE/win honored single-line conditional comment.<br>");
/* 56 */ else
/* 57 */ document.write("FAIL: Non-IE/win browser did not ignore single-line conditional comment.<br>");
/* 58 */

23
min_unit_tests/test_MyMin.php Normal file
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@@ -0,0 +1,23 @@
<?php
require_once '_inc.php';
require_once 'MyMin.php';
function test_MyMin()
{
global $thisDir;
$src = file_get_contents($thisDir . '/_test_files/js/before.js');
$minExpected = file_get_contents($thisDir . '/_test_files/js/before.min.js');
$minOutput = MyMin::parse($src);
$passed = assertTrue($minExpected == $minOutput, 'Minify_Javascript');
if (__FILE__ === realpath($_SERVER['SCRIPT_FILENAME'])) {
echo "\n---Output: " .strlen($minOutput). " bytes\n\n{$minOutput}\n\n";
echo "---Expected: " .strlen($minExpected). " bytes\n\n{$minExpected}\n\n";
echo "---Source: " .strlen($src). " bytes\n\n{$src}\n\n\n";
}
}
test_MyMin();

4
min_unit_tests/test_js_in_browser.html Normal file
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@@ -0,0 +1,4 @@
<!DOCTYPE html>
<html><title>Test before.min.js</title></html>
<h1>Test before.min.js</h1>
<script src="_test_files/js/before.min.js" type="text/javascript"></script>