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Fix bug in background-position with center keyword.

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Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
This commit is contained in:
Edward Z. Yang 2010-05-05 15:08:57 -04:00
parent 1a70bffd5a
commit 3166b8a10f
3 changed files with 20 additions and 12 deletions
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1
NEWS
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@ -11,6 +11,7 @@ NEWS ( CHANGELOG and HISTORY ) HTMLPurifier
4.1.1, unknown release date
- Emit an error for CollectErrors if a body is extracted
- Fix bug where in background-position for center keyword handling.
4.1.0, released 2010-04-26
! Support proprietary height attribute on table element

21
library/HTMLPurifier/AttrDef/CSS/BackgroundPosition.php
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@ -59,7 +59,8 @@ class HTMLPurifier_AttrDef_CSS_BackgroundPosition extends HTMLPurifier_AttrDef
$keywords = array();
$keywords['h'] = false; // left, right
$keywords['v'] = false; // top, bottom
$keywords['c'] = false; // center
$keywords['ch'] = false; // center (first word)
$keywords['cv'] = false; // center (second word)
$measures = array();
$i = 0;
@ -79,6 +80,13 @@ class HTMLPurifier_AttrDef_CSS_BackgroundPosition extends HTMLPurifier_AttrDef
$lbit = ctype_lower($bit) ? $bit : strtolower($bit);
if (isset($lookup[$lbit])) {
$status = $lookup[$lbit];
if ($status == 'c') {
if ($i == 0) {
$status = 'ch';
} else {
$status = 'cv';
}
}
$keywords[$status] = $lbit;
$i++;
}
@ -101,20 +109,19 @@ class HTMLPurifier_AttrDef_CSS_BackgroundPosition extends HTMLPurifier_AttrDef
if (!$i) return false; // no valid values were caught
$ret = array();
// first keyword
if ($keywords['h']) $ret[] = $keywords['h'];
elseif (count($measures)) $ret[] = array_shift($measures);
elseif ($keywords['c']) {
$ret[] = $keywords['c'];
$keywords['c'] = false; // prevent re-use: center = center center
elseif ($keywords['ch']) {
$ret[] = $keywords['ch'];
$keywords['cv'] = false; // prevent re-use: center = center center
}
elseif (count($measures)) $ret[] = array_shift($measures);
if ($keywords['v']) $ret[] = $keywords['v'];
elseif ($keywords['cv']) $ret[] = $keywords['cv'];
elseif (count($measures)) $ret[] = array_shift($measures);
elseif ($keywords['c']) $ret[] = $keywords['c'];
if (empty($ret)) return false;
return implode(' ', $ret);

10
tests/HTMLPurifier/AttrDef/CSS/BackgroundPositionTest.php
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@ -28,13 +28,13 @@ class HTMLPurifier_AttrDef_CSS_BackgroundPositionTest extends HTMLPurifier_AttrD
// reordered due to internal impl details
$this->assertDef('top left', 'left top');
$this->assertDef('top center', 'center top');
$this->assertDef('top center', 'top');
$this->assertDef('top right', 'right top');
$this->assertDef('center left', 'left center');
$this->assertDef('center center', 'center'); // two centers collide
$this->assertDef('center right', 'right center');
$this->assertDef('center left', 'left');
$this->assertDef('center center', 'center');
$this->assertDef('center right', 'right');
$this->assertDef('bottom left', 'left bottom');
$this->assertDef('bottom center', 'center bottom');
$this->assertDef('bottom center', 'bottom');
$this->assertDef('bottom right', 'right bottom');
// more cases from the defined syntax