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Optimized header sniffing in Encoder.php; no more regex's needed for most browsers. Updated README w/r/t test suite update.

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This commit is contained in:
Steve Clay 2008-03-05 14:56:23 +00:00
parent 98530fcd57
commit a0d48f16fb
3 changed files with 30 additions and 33 deletions
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6
README
View File

@ -24,9 +24,9 @@ TESTING
4. Visit http://yourdomain.com/path/to/web/examples/1/
This page should contain 3 "PASS"es. It may take a few seconds to minify jQuery!
5. Call each "test_*.php" file in http://yourdomain.com/path/to/web/test/
Each test should "PASS", except test_Minify.php. This script should output a
single minified Javascript file sent as "application/x-javascript".
5. Visit http://yourdomain.com/path/to/web/test/test_all.php
This will run all unit tests. You can call the tests individually to see
more details.
MINIFY OVERVIEW

4
lib/HTTP/ConditionalGet.php
View File

@ -244,9 +244,7 @@ class HTTP_ConditionalGet {
if (!isset($_SERVER['HTTP_IF_MODIFIED_SINCE'])) {
return false;
}
$ifModifiedSince = get_magic_quotes_gpc()
? stripslashes($_SERVER['HTTP_IF_MODIFIED_SINCE'])
: $_SERVER['HTTP_IF_MODIFIED_SINCE'];
$ifModifiedSince = $_SERVER['HTTP_IF_MODIFIED_SINCE'];
if (false !== ($semicolon = strrpos($ifModifiedSince, ';'))) {
// IE has tacked on extra data to this header, strip it
$ifModifiedSince = substr($ifModifiedSince, 0, $semicolon);

53
lib/HTTP/Encoder.php
View File

@ -141,33 +141,35 @@ class HTTP_Encoder {
* call gzip "x-gzip" etc.)
*/
public static function getAcceptedEncoding() {
// @link http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html
if (! isset($_SERVER['HTTP_ACCEPT_ENCODING'])
|| self::_isBuggyIe())
{
return array('', '');
}
// @link http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html
// test for (x-)gzip, if q is specified, can't be "0"
// faster test for most common "gzip, deflate"
if (preg_match('@(?:,| )deflate$@', $_SERVER['HTTP_ACCEPT_ENCODING'])
$ae = $_SERVER['HTTP_ACCEPT_ENCODING'];
$aeRev = strrev($ae);
// Fast tests for common AEs. If these don't pass we have to do
// slow regex parsing
if (0 === strpos($aeRev, 'etalfed ,') // ie, webkit
|| 0 === strpos($aeRev, 'etalfed,') // gecko
|| 0 === strpos($ae, 'deflate,') // opera 9.5b
// slow parsing
|| preg_match(
'@(?:^|,)\\s*deflate\\s*(?:$|,|;\\s*q=(?:0\\.|1))@'
,$_SERVER['HTTP_ACCEPT_ENCODING'])
) {
'@(?:^|,)\\s*deflate\\s*(?:$|,|;\\s*q=(?:0\\.|1))@', $ae)) {
return array('deflate', 'deflate');
}
if (preg_match(
'@(?:^|,)\\s*((?:x-)?gzip)\\s*(?:$|,|;\\s*q=(?:0\\.|1))@'
,$_SERVER['HTTP_ACCEPT_ENCODING']
,$m)
) {
,$ae
,$m)) {
return array('gzip', $m[1]);
}
if (preg_match(
'@(?:^|,)\\s*((?:x-)?compress)\\s*(?:$|,|;\\s*q=(?:0\\.|1))@'
,$_SERVER['HTTP_ACCEPT_ENCODING']
,$m)
) {
'@(?:^|,)\\s*((?:x-)?compress)\\s*(?:$|,|;\\s*q=(?:0\\.|1))@'
,$ae
,$m)) {
return array('compress', $m[1]);
}
return array('', '');
@ -226,20 +228,17 @@ class HTTP_Encoder {
*/
protected static function _isBuggyIe()
{
if (false !== strpos($_SERVER['HTTP_USER_AGENT'], 'Opera')
|| !preg_match(
'/^Mozilla\/4\.0 \(compatible; MSIE ([0-9]\.[0-9])/i'
,$_SERVER['HTTP_USER_AGENT']
,$m
)
) {
$ua = $_SERVER['HTTP_USER_AGENT'];
// quick escape for non-IEs
if (0 !== strpos($ua, 'Mozilla/4.0 (compatible; MSIE ')
|| false !== strpos($ua, 'Opera')) {
return false;
}
$version = floatval($m[1]);
if ($version < 6) return true;
if ($version == 6 && false === strpos($_SERVER['HTTP_USER_AGENT'], 'SV1')) {
return true;
}
return false;
// no regex = faaast
$version = (float)substr($ua, 30);
return (
$version < 6
|| ($version == 6 && false === strpos($ua, 'SV1'))
);
}
}