/**
* parse a CSS string using a regex parser
*
* Called by {@link Stylesheet::parse_css()}
*
* @param string $str
*/
private function _parse_css($str)
{
// Destroy comments
$css = preg_replace("'/\\*.*?\\*/'si", "", $str);
// FIXME: handle '{' within strings, e.g. [attr="string {}"]
// Something more legible:
$re = "/\\s* # Skip leading whitespace \n" . "( @([^\\s]+)\\s+([^{;]*) (?:;|({)) )? # Match @rules followed by ';' or '{' \n" . "(?(1) # Only parse sub-sections if we're in an @rule... \n" . " (?(4) # ...and if there was a leading '{' \n" . " \\s*( (?:(?>[^{}]+) ({)? # Parse rulesets and individual @page rules \n" . " (?(6) (?>[^}]*) }) \\s*)+? \n" . " ) \n" . " }) # Balancing '}' \n" . "| # Branch to match regular rules (not preceeded by '@')\n" . "([^{]*{[^}]*})) # Parse normal rulesets\n" . "/xs";
if (preg_match_all($re, $css, $matches, PREG_SET_ORDER) === false) {
// An error occured
throw new DOMPDF_Exception("Error parsing css file: preg_match_all() failed.");
}
// After matching, the array indicies are set as follows:
//
// [0] => complete text of match
// [1] => contains '@import ...;' or '@media {' if applicable
// [2] => text following @ for cases where [1] is set
// [3] => media types or full text following '@import ...;'
// [4] => '{', if present
// [5] => rulesets within media rules
// [6] => '{', within media rules
// [7] => individual rules, outside of media rules
//
//pre_r($matches);
foreach ($matches as $match) {
$match[2] = trim($match[2]);
if ($match[2] !== "") {
// Handle @rules
switch ($match[2]) {
case "import":
$this->_parse_import($match[3]);
break;
case "media":
if (in_array(mb_strtolower(trim($match[3])), self::$ACCEPTED_MEDIA_TYPES)) {
$this->_parse_sections($match[5]);
}
break;
case "page":
// Store the style for later...
if (is_null($this->_page_style)) {
$this->_page_style = $this->_parse_properties($match[5]);
} else {
$this->_page_style->merge($this->_parse_properties($match[5]));
}
break;
default:
// ignore everything else
break;
}
continue;
}
if ($match[7] !== "") {
$this->_parse_sections($match[7]);
}
}
}
/**
* parse a CSS string using a regex parser
*
* Called by {@link Stylesheet::parse_css()}
*
* @param string $str
*/
private function _parse_css($str)
{
$str = trim($str);
// Destroy comments and remove HTML comments
$css = preg_replace(array("'/\\*.*?\\*/'si", "/^<!--/", "/-->\$/"), "", $str);
// FIXME: handle '{' within strings, e.g. [attr="string {}"]
// Something more legible:
$re = "/\\s* # Skip leading whitespace \n" . "( @([^\\s]+)\\s+([^{;]*) (?:;|({)) )? # Match @rules followed by ';' or '{' \n" . "(?(1) # Only parse sub-sections if we're in an @rule... \n" . " (?(4) # ...and if there was a leading '{' \n" . " \\s*( (?:(?>[^{}]+) ({)? # Parse rulesets and individual @page rules \n" . " (?(6) (?>[^}]*) }) \\s*)+? \n" . " ) \n" . " }) # Balancing '}' \n" . "| # Branch to match regular rules (not preceeded by '@')\n" . "([^{]*{[^}]*})) # Parse normal rulesets\n" . "/xs";
if (preg_match_all($re, $css, $matches, PREG_SET_ORDER) === false) {
// An error occured
throw new DOMPDF_Exception("Error parsing css file: preg_match_all() failed.");
}
// After matching, the array indicies are set as follows:
//
// [0] => complete text of match
// [1] => contains '@import ...;' or '@media {' if applicable
// [2] => text following @ for cases where [1] is set
// [3] => media types or full text following '@import ...;'
// [4] => '{', if present
// [5] => rulesets within media rules
// [6] => '{', within media rules
// [7] => individual rules, outside of media rules
//
//pre_r($matches);
foreach ($matches as $match) {
$match[2] = trim($match[2]);
if ($match[2] !== "") {
// Handle @rules
switch ($match[2]) {
case "import":
$this->_parse_import($match[3]);
break;
case "media":
$acceptedmedia = self::$ACCEPTED_GENERIC_MEDIA_TYPES;
if (defined("DOMPDF_DEFAULT_MEDIA_TYPE")) {
$acceptedmedia[] = DOMPDF_DEFAULT_MEDIA_TYPE;
} else {
$acceptedmedia[] = self::$ACCEPTED_DEFAULT_MEDIA_TYPE;
}
if (in_array(mb_strtolower(trim($match[3])), $acceptedmedia)) {
$this->_parse_sections($match[5]);
}
break;
case "page":
//This handles @page to be applied to page oriented media
//Note: This has a reduced syntax:
//@page { margin:1cm; color:blue; }
//Not a sequence of styles like a full.css, but only the properties
//of a single style, which is applied to the very first "root" frame before
//processing other styles of the frame.
//Working properties:
// margin (for margin around edge of paper)
// font-family (default font of pages)
// color (default text color of pages)
//Non working properties:
// border
// padding
// background-color
//Todo:Reason is unknown
//Other properties (like further font or border attributes) not tested.
//If a border or background color around each paper sheet is desired,
//assign it to the <body> tag, possibly only for the css of the correct media type.
// If the page has a name, skip the style.
if ($match[3] !== "") {
return;
}
// Store the style for later...
if (is_null($this->_page_style)) {
$this->_page_style = $this->_parse_properties($match[5]);
} else {
$this->_page_style->merge($this->_parse_properties($match[5]));
}
break;
case "font-face":
$this->_parse_font_face($match[5]);
break;
default:
// ignore everything else
break;
}
continue;
}
if ($match[7] !== "") {
$this->_parse_sections($match[7]);
}
}
}
/**
* merge() should not merge style if the states are different
*/
public function testMerge_doesNotMergeStyles_ifStatesAreDifferent()
{
$style1 = new Style();
$style2 = new Style();
// $style2->getDocument()->setSomething();
$style2->getSection()->setIndex(999);
$style2->getParagraph()->setIndex(999);
$style2->getCharacter()->setIsBold(true);
$style2->merge($style1);
// $this->assertNotSame($style1->getDocument(), $style2->getDocument());
$this->assertNotSame($style1->getSection(), $style2->getSection());
$this->assertNotSame($style1->getParagraph(), $style2->getParagraph());
$this->assertNotSame($style1->getCharacter(), $style2->getCharacter());
return;
}
