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Add parser for IE conditional comments, to be used in JS concatenation

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This commit is contained in:
Kijin Sung 2016-05-04 18:06:02 +09:00
parent e22558374f
commit 90bce20794
3 changed files with 132 additions and 1 deletions
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102
common/framework/formatter.php
View file

@ -337,9 +337,109 @@ class Formatter
{ {
$content = "@media $media {\n\n$content\n\n}"; $content = "@media $media {\n\n$content\n\n}";
} }
$result .= trim($content) . "\n\n"; $original_filename = starts_with(\RX_BASEDIR, $filename) ? substr($filename, strlen(\RX_BASEDIR)) : $filename;
$result .= '/* Original file: ' . $original_filename . ' */' . "\n\n" . trim($content) . "\n\n";
} }
return $result; return $result;
} }
/**
* JS concatenation subroutine.
*
* @param string|array $source_filename
* @param string $target_filename
* @return string
*/
public static function concatJS($source_filename, $target_filename)
{
$result = '';
if (!is_array($source_filename))
{
$source_filename = array($source_filename);
}
foreach ($source_filename as $filename)
{
if (is_array($filename) && count($filename) >= 2)
{
list($filename, $targetie) = $filename;
}
else
{
$targetie = null;
}
$content = utf8_clean(file_get_contents($filename));
if ($targetie !== null)
{
$content = 'if (' . self::convertIECondition($targetie) . ') {' . "\n\n" . $content . "\n\n" . '}';
}
$original_filename = starts_with(\RX_BASEDIR, $filename) ? substr($filename, strlen(\RX_BASEDIR)) : $filename;
$result .= '/* Original file: ' . $original_filename . ' */' . "\n\n" . trim($content) . "\n\n";
}
return $result;
}
/**
* Convert IE conditional comments to JS conditions.
*
* @param string $condition
* @return string
*/
public static function convertIECondition($condition)
{
$conversions = array(
'/^true$/i' => 'true',
'/^false$/i' => 'false',
'/^IE$/i' => 'window.navigator.userAgent.match(/MSIE\s/)',
'/^IE\s*(\d+)$/i' => '(/MSIE (\d+)/.exec(window.navigator.userAgent) && /MSIE (\d+)/.exec(window.navigator.userAgent)[1] == %d)',
'/^gt IE\s*(\d+)$/i' => '(/MSIE (\d+)/.exec(window.navigator.userAgent) && /MSIE (\d+)/.exec(window.navigator.userAgent)[1] > %d)',
'/^gte IE\s*(\d+)$/i' => '(/MSIE (\d+)/.exec(window.navigator.userAgent) && /MSIE (\d+)/.exec(window.navigator.userAgent)[1] >= %d)',
'/^lt IE\s*(\d+)$/i' => '(/MSIE (\d+)/.exec(window.navigator.userAgent) && /MSIE (\d+)/.exec(window.navigator.userAgent)[1] < %d)',
'/^lte IE\s*(\d+)$/i' => '(/MSIE (\d+)/.exec(window.navigator.userAgent) && /MSIE (\d+)/.exec(window.navigator.userAgent)[1] <= %d)',
);
$result = array();
$conditions = preg_split('/([\&\|])/', $condition, -1, \PREG_SPLIT_NO_EMPTY | \PREG_SPLIT_DELIM_CAPTURE);
foreach ($conditions as $condition)
{
$condition = trim(preg_replace('/[\(\)]/', '', $condition));
if ($condition === '')
{
continue;
}
if ($condition === '&' || $condition === '|')
{
$result[] = $condition . $condition;
continue;
}
$negation = $condition[0] === '!';
if ($negation)
{
$condition = trim(substr($condition, 1));
}
foreach ($conversions as $regexp => $replacement)
{
if (preg_match($regexp, $condition, $matches))
{
if (count($matches) > 1)
{
array_shift($matches);
$result[] = ($negation ? '!' : '') . vsprintf($replacement, $matches);
}
else
{
$result[] = ($negation ? '!' : '') . $replacement;
}
break;
}
}
}
return count($result) ? implode(' ', $result) : 'false';
}
} }

2
tests/_data/formatter/scss.target1.css
View file

@ -1,4 +1,6 @@
@charset "UTF-8"; @charset "UTF-8";
/* Original file: tests/_data/formatter/scss.source1.scss */
/* Original file: tests/_data/formatter/scss.source2.scss */
.rhymix { .rhymix {
color: #123456; color: #123456;
background: url("../_data/formatter/foo/bar.jpg"); background: url("../_data/formatter/foo/bar.jpg");

29
tests/unit/framework/FormatterTest.php
View file

@ -131,4 +131,33 @@ class FormatterTest extends \Codeception\TestCase\Test
unlink($test_target); unlink($test_target);
} }
public function testConvertIECondition()
{
$this->assertEquals('window.navigator.userAgent.match(/MSIE\s/)', Rhymix\Framework\Formatter::convertIECondition('IE'));
$this->assertEquals('!window.navigator.userAgent.match(/MSIE\s/)', Rhymix\Framework\Formatter::convertIECondition('!IE'));
$this->assertEquals('!window.navigator.userAgent.match(/MSIE\s/)', Rhymix\Framework\Formatter::convertIECondition('!(IE)'));
$this->assertEquals('true && false', Rhymix\Framework\Formatter::convertIECondition('true&false'));
$this->assertEquals('false', Rhymix\Framework\Formatter::convertIECondition('gobbledygook'));
$source = 'gt IE 7';
$target = '(/MSIE (\d+)/.exec(window.navigator.userAgent) && /MSIE (\d+)/.exec(window.navigator.userAgent)[1] > 7)';
$this->assertEquals($target, Rhymix\Framework\Formatter::convertIECondition($source));
$source = 'lte IE 8';
$target = '(/MSIE (\d+)/.exec(window.navigator.userAgent) && /MSIE (\d+)/.exec(window.navigator.userAgent)[1] <= 8)';
$this->assertEquals($target, Rhymix\Framework\Formatter::convertIECondition($source));
$source = '(gte IE 6) & (lt IE 8)';
$target = '(/MSIE (\d+)/.exec(window.navigator.userAgent) && /MSIE (\d+)/.exec(window.navigator.userAgent)[1] >= 6) && (/MSIE (\d+)/.exec(window.navigator.userAgent) && /MSIE (\d+)/.exec(window.navigator.userAgent)[1] < 8)';
$this->assertEquals($target, Rhymix\Framework\Formatter::convertIECondition($source));
$source = '!(gt IE 9)';
$target = '!(/MSIE (\d+)/.exec(window.navigator.userAgent) && /MSIE (\d+)/.exec(window.navigator.userAgent)[1] > 9)';
$this->assertEquals($target, Rhymix\Framework\Formatter::convertIECondition($source));
$source = '!lt IE 8|lt IE 6';
$target = '!(/MSIE (\d+)/.exec(window.navigator.userAgent) && /MSIE (\d+)/.exec(window.navigator.userAgent)[1] < 8) || (/MSIE (\d+)/.exec(window.navigator.userAgent) && /MSIE (\d+)/.exec(window.navigator.userAgent)[1] < 6)';
$this->assertEquals($target, Rhymix\Framework\Formatter::convertIECondition($source));
}
} }