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Diffstat (limited to 'vendor/ezyang/htmlpurifier/library/HTMLPurifier/TagTransform/Font.php')
-rw-r--r--vendor/ezyang/htmlpurifier/library/HTMLPurifier/TagTransform/Font.php114
1 files changed, 114 insertions, 0 deletions
diff --git a/vendor/ezyang/htmlpurifier/library/HTMLPurifier/TagTransform/Font.php b/vendor/ezyang/htmlpurifier/library/HTMLPurifier/TagTransform/Font.php
new file mode 100644
index 0000000..7853d90
--- /dev/null
+++ b/vendor/ezyang/htmlpurifier/library/HTMLPurifier/TagTransform/Font.php
@@ -0,0 +1,114 @@
+<?php
+
+/**
+ * Transforms FONT tags to the proper form (SPAN with CSS styling)
+ *
+ * This transformation takes the three proprietary attributes of FONT and
+ * transforms them into their corresponding CSS attributes. These are color,
+ * face, and size.
+ *
+ * @note Size is an interesting case because it doesn't map cleanly to CSS.
+ * Thanks to
+ * http://style.cleverchimp.com/font_size_intervals/altintervals.html
+ * for reasonable mappings.
+ * @warning This doesn't work completely correctly; specifically, this
+ * TagTransform operates before well-formedness is enforced, so
+ * the "active formatting elements" algorithm doesn't get applied.
+ */
+class HTMLPurifier_TagTransform_Font extends HTMLPurifier_TagTransform
+{
+ /**
+ * @type string
+ */
+ public $transform_to = 'span';
+
+ /**
+ * @type array
+ */
+ protected $_size_lookup = array(
+ '0' => 'xx-small',
+ '1' => 'xx-small',
+ '2' => 'small',
+ '3' => 'medium',
+ '4' => 'large',
+ '5' => 'x-large',
+ '6' => 'xx-large',
+ '7' => '300%',
+ '-1' => 'smaller',
+ '-2' => '60%',
+ '+1' => 'larger',
+ '+2' => '150%',
+ '+3' => '200%',
+ '+4' => '300%'
+ );
+
+ /**
+ * @param HTMLPurifier_Token_Tag $tag
+ * @param HTMLPurifier_Config $config
+ * @param HTMLPurifier_Context $context
+ * @return HTMLPurifier_Token_End|string
+ */
+ public function transform($tag, $config, $context)
+ {
+ if ($tag instanceof HTMLPurifier_Token_End) {
+ $new_tag = clone $tag;
+ $new_tag->name = $this->transform_to;
+ return $new_tag;
+ }
+
+ $attr = $tag->attr;
+ $prepend_style = '';
+
+ // handle color transform
+ if (isset($attr['color'])) {
+ $prepend_style .= 'color:' . $attr['color'] . ';';
+ unset($attr['color']);
+ }
+
+ // handle face transform
+ if (isset($attr['face'])) {
+ $prepend_style .= 'font-family:' . $attr['face'] . ';';
+ unset($attr['face']);
+ }
+
+ // handle size transform
+ if (isset($attr['size'])) {
+ // normalize large numbers
+ if ($attr['size'] !== '') {
+ if ($attr['size']{0} == '+' || $attr['size']{0} == '-') {
+ $size = (int)$attr['size'];
+ if ($size < -2) {
+ $attr['size'] = '-2';
+ }
+ if ($size > 4) {
+ $attr['size'] = '+4';
+ }
+ } else {
+ $size = (int)$attr['size'];
+ if ($size > 7) {
+ $attr['size'] = '7';
+ }
+ }
+ }
+ if (isset($this->_size_lookup[$attr['size']])) {
+ $prepend_style .= 'font-size:' .
+ $this->_size_lookup[$attr['size']] . ';';
+ }
+ unset($attr['size']);
+ }
+
+ if ($prepend_style) {
+ $attr['style'] = isset($attr['style']) ?
+ $prepend_style . $attr['style'] :
+ $prepend_style;
+ }
+
+ $new_tag = clone $tag;
+ $new_tag->name = $this->transform_to;
+ $new_tag->attr = $attr;
+
+ return $new_tag;
+ }
+}
+
+// vim: et sw=4 sts=4