class csstidy_optimise in Advanced CSS/JS Aggregation 6
Same name and namespace in other branches
- 7 advagg_css_compress/csstidy/class.csstidy_optimise.inc \csstidy_optimise
CSS Optimising Class
This class optimises CSS data generated by csstidy.
@package csstidy @author Florian Schmitz (floele at gmail dot com) 2005-2006 @version 1.0
Hierarchy
- class \csstidy_optimise
Expanded class hierarchy of csstidy_optimise
File
- advagg_css_compress/
csstidy/ class.csstidy_optimise.inc, line 42
View source
class csstidy_optimise {
/**
* Constructor
* @param array $css contains the class csstidy
* @access private
* @version 1.0
*/
function csstidy_optimise(&$css) {
$this->parser =& $css;
$this->css =& $css->css;
$this->sub_value =& $css->sub_value;
$this->at =& $css->at;
$this->selector =& $css->selector;
$this->property =& $css->property;
$this->value =& $css->value;
}
/**
* Optimises $css after parsing
* @access public
* @version 1.0
*/
function postparse() {
if ($this->parser
->get_cfg('preserve_css')) {
return;
}
if ($this->parser
->get_cfg('merge_selectors') === 2) {
foreach ($this->css as $medium => $value) {
$this
->merge_selectors($this->css[$medium]);
}
}
if ($this->parser
->get_cfg('discard_invalid_selectors')) {
foreach ($this->css as $medium => $value) {
$this
->discard_invalid_selectors($this->css[$medium]);
}
}
if ($this->parser
->get_cfg('optimise_shorthands') > 0) {
foreach ($this->css as $medium => $value) {
foreach ($value as $selector => $value1) {
$this->css[$medium][$selector] = csstidy_optimise::merge_4value_shorthands($this->css[$medium][$selector]);
if ($this->parser
->get_cfg('optimise_shorthands') < 2) {
continue;
}
$this->css[$medium][$selector] = csstidy_optimise::merge_font($this->css[$medium][$selector]);
if ($this->parser
->get_cfg('optimise_shorthands') < 3) {
continue;
}
$this->css[$medium][$selector] = csstidy_optimise::merge_bg($this->css[$medium][$selector]);
if (empty($this->css[$medium][$selector])) {
unset($this->css[$medium][$selector]);
}
}
}
}
}
/**
* Optimises values
* @access public
* @version 1.0
*/
function value() {
$shorthands =& $GLOBALS['csstidy']['shorthands'];
// optimise shorthand properties
if (isset($shorthands[$this->property])) {
$temp = csstidy_optimise::shorthand($this->value);
// FIXME - move
if ($temp != $this->value) {
$this->parser
->log('Optimised shorthand notation (' . $this->property . '): Changed "' . $this->value . '" to "' . $temp . '"', 'Information');
}
$this->value = $temp;
}
// Remove whitespace at ! important
if ($this->value != $this
->compress_important($this->value)) {
$this->parser
->log('Optimised !important', 'Information');
}
}
/**
* Optimises shorthands
* @access public
* @version 1.0
*/
function shorthands() {
$shorthands =& $GLOBALS['csstidy']['shorthands'];
if (!$this->parser
->get_cfg('optimise_shorthands') || $this->parser
->get_cfg('preserve_css')) {
return;
}
if ($this->property === 'font' && $this->parser
->get_cfg('optimise_shorthands') > 1) {
$this->css[$this->at][$this->selector]['font'] = '';
$this->parser
->merge_css_blocks($this->at, $this->selector, csstidy_optimise::dissolve_short_font($this->value));
}
if ($this->property === 'background' && $this->parser
->get_cfg('optimise_shorthands') > 2) {
$this->css[$this->at][$this->selector]['background'] = '';
$this->parser
->merge_css_blocks($this->at, $this->selector, csstidy_optimise::dissolve_short_bg($this->value));
}
if (isset($shorthands[$this->property])) {
$this->parser
->merge_css_blocks($this->at, $this->selector, csstidy_optimise::dissolve_4value_shorthands($this->property, $this->value));
if (is_array($shorthands[$this->property])) {
$this->css[$this->at][$this->selector][$this->property] = '';
}
}
}
/**
* Optimises a sub-value
* @access public
* @version 1.0
*/
function subvalue() {
$replace_colors =& $GLOBALS['csstidy']['replace_colors'];
$this->sub_value = trim($this->sub_value);
if ($this->sub_value == '') {
// caution : '0'
return;
}
$important = '';
if (csstidy::is_important($this->sub_value)) {
$important = '!important';
}
$this->sub_value = csstidy::gvw_important($this->sub_value);
// Compress font-weight
if ($this->property === 'font-weight' && $this->parser
->get_cfg('compress_font-weight')) {
if ($this->sub_value === 'bold') {
$this->sub_value = '700';
$this->parser
->log('Optimised font-weight: Changed "bold" to "700"', 'Information');
}
else {
if ($this->sub_value === 'normal') {
$this->sub_value = '400';
$this->parser
->log('Optimised font-weight: Changed "normal" to "400"', 'Information');
}
}
}
$temp = $this
->compress_numbers($this->sub_value);
if (strcasecmp($temp, $this->sub_value) !== 0) {
if (strlen($temp) > strlen($this->sub_value)) {
$this->parser
->log('Fixed invalid number: Changed "' . $this->sub_value . '" to "' . $temp . '"', 'Warning');
}
else {
$this->parser
->log('Optimised number: Changed "' . $this->sub_value . '" to "' . $temp . '"', 'Information');
}
$this->sub_value = $temp;
}
if ($this->parser
->get_cfg('compress_colors')) {
$temp = $this
->cut_color($this->sub_value);
if ($temp !== $this->sub_value) {
if (isset($replace_colors[$this->sub_value])) {
$this->parser
->log('Fixed invalid color name: Changed "' . $this->sub_value . '" to "' . $temp . '"', 'Warning');
}
else {
$this->parser
->log('Optimised color: Changed "' . $this->sub_value . '" to "' . $temp . '"', 'Information');
}
$this->sub_value = $temp;
}
}
$this->sub_value .= $important;
}
/**
* Compresses shorthand values. Example: margin:1px 1px 1px 1px -> margin:1px
* @param string $value
* @access public
* @return string
* @version 1.0
*/
function shorthand($value) {
$important = '';
if (csstidy::is_important($value)) {
$values = csstidy::gvw_important($value);
$important = '!important';
}
else {
$values = $value;
}
$values = explode(' ', $values);
switch (count($values)) {
case 4:
if ($values[0] == $values[1] && $values[0] == $values[2] && $values[0] == $values[3]) {
return $values[0] . $important;
}
elseif ($values[1] == $values[3] && $values[0] == $values[2]) {
return $values[0] . ' ' . $values[1] . $important;
}
elseif ($values[1] == $values[3]) {
return $values[0] . ' ' . $values[1] . ' ' . $values[2] . $important;
}
break;
case 3:
if ($values[0] == $values[1] && $values[0] == $values[2]) {
return $values[0] . $important;
}
elseif ($values[0] == $values[2]) {
return $values[0] . ' ' . $values[1] . $important;
}
break;
case 2:
if ($values[0] == $values[1]) {
return $values[0] . $important;
}
break;
}
return $value;
}
/**
* Removes unnecessary whitespace in ! important
* @param string $string
* @return string
* @access public
* @version 1.1
*/
function compress_important(&$string) {
if (csstidy::is_important($string)) {
$string = csstidy::gvw_important($string) . '!important';
}
return $string;
}
/**
* Color compression function. Converts all rgb() values to #-values and uses the short-form if possible. Also replaces 4 color names by #-values.
* @param string $color
* @return string
* @version 1.1
*/
function cut_color($color) {
$replace_colors =& $GLOBALS['csstidy']['replace_colors'];
// rgb(0,0,0) -> #000000 (or #000 in this case later)
if (strtolower(substr($color, 0, 4)) === 'rgb(') {
$color_tmp = substr($color, 4, strlen($color) - 5);
$color_tmp = explode(',', $color_tmp);
for ($i = 0; $i < count($color_tmp); $i++) {
$color_tmp[$i] = trim($color_tmp[$i]);
if (substr($color_tmp[$i], -1) === '%') {
$color_tmp[$i] = round(255 * $color_tmp[$i] / 100);
}
if ($color_tmp[$i] > 255) {
$color_tmp[$i] = 255;
}
}
$color = '#';
for ($i = 0; $i < 3; $i++) {
if ($color_tmp[$i] < 16) {
$color .= '0' . dechex($color_tmp[$i]);
}
else {
$color .= dechex($color_tmp[$i]);
}
}
}
// Fix bad color names
if (isset($replace_colors[strtolower($color)])) {
$color = $replace_colors[strtolower($color)];
}
// #aabbcc -> #abc
if (strlen($color) == 7) {
$color_temp = strtolower($color);
if ($color_temp[0] === '#' && $color_temp[1] == $color_temp[2] && $color_temp[3] == $color_temp[4] && $color_temp[5] == $color_temp[6]) {
$color = '#' . $color[1] . $color[3] . $color[5];
}
}
switch (strtolower($color)) {
/* color name -> hex code */
case 'black':
return '#000';
case 'fuchsia':
return '#f0f';
case 'white':
return '#fff';
case 'yellow':
return '#ff0';
/* hex code -> color name */
case '#800000':
return 'maroon';
case '#ffa500':
return 'orange';
case '#808000':
return 'olive';
case '#800080':
return 'purple';
case '#008000':
return 'green';
case '#000080':
return 'navy';
case '#008080':
return 'teal';
case '#c0c0c0':
return 'silver';
case '#808080':
return 'gray';
case '#f00':
return 'red';
}
return $color;
}
/**
* Compresses numbers (ie. 1.0 becomes 1 or 1.100 becomes 1.1 )
* @param string $subvalue
* @return string
* @version 1.2
*/
function compress_numbers($subvalue) {
$unit_values =& $GLOBALS['csstidy']['unit_values'];
$color_values =& $GLOBALS['csstidy']['color_values'];
// for font:1em/1em sans-serif...;
if ($this->property === 'font') {
$temp = explode('/', $subvalue);
}
else {
$temp = array(
$subvalue,
);
}
for ($l = 0; $l < count($temp); $l++) {
// if we are not dealing with a number at this point, do not optimise anything
$number = $this
->AnalyseCssNumber($temp[$l]);
if ($number === false) {
return $subvalue;
}
// Fix bad colors
if (in_array($this->property, $color_values)) {
$temp[$l] = '#' . $temp[$l];
continue;
}
if (abs($number[0]) > 0) {
if ($number[1] == '' && in_array($this->property, $unit_values, true)) {
$number[1] = 'px';
}
}
else {
$number[1] = '';
}
$temp[$l] = $number[0] . $number[1];
}
return count($temp) > 1 ? $temp[0] . '/' . $temp[1] : $temp[0];
}
/**
* Checks if a given string is a CSS valid number. If it is,
* an array containing the value and unit is returned
* @param string $string
* @return array ('unit' if unit is found or '' if no unit exists, number value) or false if no number
*/
function AnalyseCssNumber($string) {
// most simple checks first
if (strlen($string) == 0 || ctype_alpha($string[0])) {
return false;
}
$units =& $GLOBALS['csstidy']['units'];
$return = array(
0,
'',
);
$return[0] = floatval($string);
if (abs($return[0]) > 0 && abs($return[0]) < 1) {
if ($return[0] < 0) {
$return[0] = '-' . ltrim(substr($return[0], 1), '0');
}
else {
$return[0] = ltrim($return[0], '0');
}
}
// Look for unit and split from value if exists
foreach ($units as $unit) {
$expectUnitAt = strlen($string) - strlen($unit);
if (!($unitInString = stristr($string, $unit))) {
// mb_strpos() fails with "false"
continue;
}
$actualPosition = strpos($string, $unitInString);
if ($expectUnitAt === $actualPosition) {
$return[1] = $unit;
$string = substr($string, 0, -strlen($unit));
break;
}
}
if (!is_numeric($string)) {
return false;
}
return $return;
}
/**
* Merges selectors with same properties. Example: a{color:red} b{color:red} -> a,b{color:red}
* Very basic and has at least one bug. Hopefully there is a replacement soon.
* @param array $array
* @return array
* @access public
* @version 1.2
*/
function merge_selectors(&$array) {
$css = $array;
foreach ($css as $key => $value) {
if (!isset($css[$key])) {
continue;
}
$newsel = '';
// Check if properties also exist in another selector
$keys = array();
// PHP bug (?) without $css = $array; here
foreach ($css as $selector => $vali) {
if ($selector == $key) {
continue;
}
if ($css[$key] === $vali) {
$keys[] = $selector;
}
}
if (!empty($keys)) {
$newsel = $key;
unset($css[$key]);
foreach ($keys as $selector) {
unset($css[$selector]);
$newsel .= ',' . $selector;
}
$css[$newsel] = $value;
}
}
$array = $css;
}
/**
* Removes invalid selectors and their corresponding rule-sets as
* defined by 4.1.7 in REC-CSS2. This is a very rudimentary check
* and should be replaced by a full-blown parsing algorithm or
* regular expression
* @version 1.4
*/
function discard_invalid_selectors(&$array) {
$invalid = array(
'+' => true,
'~' => true,
',' => true,
'>' => true,
);
foreach ($array as $selector => $decls) {
$ok = true;
$selectors = array_map('trim', explode(',', $selector));
foreach ($selectors as $s) {
$simple_selectors = preg_split('/\\s*[+>~\\s]\\s*/', $s);
foreach ($simple_selectors as $ss) {
if ($ss === '') {
$ok = false;
}
// could also check $ss for internal structure,
// but that probably would be too slow
}
}
if (!$ok) {
unset($array[$selector]);
}
}
}
/**
* Dissolves properties like padding:10px 10px 10px to padding-top:10px;padding-bottom:10px;...
* @param string $property
* @param string $value
* @return array
* @version 1.0
* @see merge_4value_shorthands()
*/
function dissolve_4value_shorthands($property, $value) {
$shorthands =& $GLOBALS['csstidy']['shorthands'];
if (!is_array($shorthands[$property])) {
$return[$property] = $value;
return $return;
}
$important = '';
if (csstidy::is_important($value)) {
$value = csstidy::gvw_important($value);
$important = '!important';
}
$values = explode(' ', $value);
$return = array();
if (count($values) == 4) {
for ($i = 0; $i < 4; $i++) {
$return[$shorthands[$property][$i]] = $values[$i] . $important;
}
}
elseif (count($values) == 3) {
$return[$shorthands[$property][0]] = $values[0] . $important;
$return[$shorthands[$property][1]] = $values[1] . $important;
$return[$shorthands[$property][3]] = $values[1] . $important;
$return[$shorthands[$property][2]] = $values[2] . $important;
}
elseif (count($values) == 2) {
for ($i = 0; $i < 4; $i++) {
$return[$shorthands[$property][$i]] = $i % 2 != 0 ? $values[1] . $important : $values[0] . $important;
}
}
else {
for ($i = 0; $i < 4; $i++) {
$return[$shorthands[$property][$i]] = $values[0] . $important;
}
}
return $return;
}
/**
* Explodes a string as explode() does, however, not if $sep is escaped or within a string.
* @param string $sep seperator
* @param string $string
* @return array
* @version 1.0
*/
function explode_ws($sep, $string) {
$status = 'st';
$to = '';
$output = array();
$num = 0;
for ($i = 0, $len = strlen($string); $i < $len; $i++) {
switch ($status) {
case 'st':
if ($string[$i] == $sep && !csstidy::escaped($string, $i)) {
++$num;
}
elseif ($string[$i] === '"' || $string[$i] === '\'' || $string[$i] === '(' && !csstidy::escaped($string, $i)) {
$status = 'str';
$to = $string[$i] === '(' ? ')' : $string[$i];
isset($output[$num]) ? $output[$num] .= $string[$i] : ($output[$num] = $string[$i]);
}
else {
isset($output[$num]) ? $output[$num] .= $string[$i] : ($output[$num] = $string[$i]);
}
break;
case 'str':
if ($string[$i] == $to && !csstidy::escaped($string, $i)) {
$status = 'st';
}
isset($output[$num]) ? $output[$num] .= $string[$i] : ($output[$num] = $string[$i]);
break;
}
}
if (isset($output[0])) {
return $output;
}
else {
return array(
$output,
);
}
}
/**
* Merges Shorthand properties again, the opposite of dissolve_4value_shorthands()
* @param array $array
* @return array
* @version 1.2
* @see dissolve_4value_shorthands()
*/
function merge_4value_shorthands($array) {
$return = $array;
$shorthands =& $GLOBALS['csstidy']['shorthands'];
foreach ($shorthands as $key => $value) {
if (isset($array[$value[0]]) && isset($array[$value[1]]) && isset($array[$value[2]]) && isset($array[$value[3]]) && $value !== 0) {
$return[$key] = '';
$important = '';
for ($i = 0; $i < 4; $i++) {
$val = $array[$value[$i]];
if (csstidy::is_important($val)) {
$important = '!important';
$return[$key] .= csstidy::gvw_important($val) . ' ';
}
else {
$return[$key] .= $val . ' ';
}
unset($return[$value[$i]]);
}
$return[$key] = csstidy_optimise::shorthand(trim($return[$key] . $important));
}
}
return $return;
}
/**
* Dissolve background property
* @param string $str_value
* @return array
* @version 1.0
* @see merge_bg()
* @todo full CSS 3 compliance
*/
function dissolve_short_bg($str_value) {
// don't try to explose background gradient !
if (stripos($str_value, "gradient(") !== FALSE) {
return array(
'background' => $str_value,
);
}
$background_prop_default =& $GLOBALS['csstidy']['background_prop_default'];
$repeat = array(
'repeat',
'repeat-x',
'repeat-y',
'no-repeat',
'space',
);
$attachment = array(
'scroll',
'fixed',
'local',
);
$clip = array(
'border',
'padding',
);
$origin = array(
'border',
'padding',
'content',
);
$pos = array(
'top',
'center',
'bottom',
'left',
'right',
);
$important = '';
$return = array(
'background-image' => null,
'background-size' => null,
'background-repeat' => null,
'background-position' => null,
'background-attachment' => null,
'background-clip' => null,
'background-origin' => null,
'background-color' => null,
);
if (csstidy::is_important($str_value)) {
$important = ' !important';
$str_value = csstidy::gvw_important($str_value);
}
$str_value = csstidy_optimise::explode_ws(',', $str_value);
for ($i = 0; $i < count($str_value); $i++) {
$have['clip'] = false;
$have['pos'] = false;
$have['color'] = false;
$have['bg'] = false;
if (is_array($str_value[$i])) {
$str_value[$i] = $str_value[$i][0];
}
$str_value[$i] = csstidy_optimise::explode_ws(' ', trim($str_value[$i]));
for ($j = 0; $j < count($str_value[$i]); $j++) {
if ($have['bg'] === false && (substr($str_value[$i][$j], 0, 4) === 'url(' || $str_value[$i][$j] === 'none')) {
$return['background-image'] .= $str_value[$i][$j] . ',';
$have['bg'] = true;
}
elseif (in_array($str_value[$i][$j], $repeat, true)) {
$return['background-repeat'] .= $str_value[$i][$j] . ',';
}
elseif (in_array($str_value[$i][$j], $attachment, true)) {
$return['background-attachment'] .= $str_value[$i][$j] . ',';
}
elseif (in_array($str_value[$i][$j], $clip, true) && !$have['clip']) {
$return['background-clip'] .= $str_value[$i][$j] . ',';
$have['clip'] = true;
}
elseif (in_array($str_value[$i][$j], $origin, true)) {
$return['background-origin'] .= $str_value[$i][$j] . ',';
}
elseif ($str_value[$i][$j][0] === '(') {
$return['background-size'] .= substr($str_value[$i][$j], 1, -1) . ',';
}
elseif (in_array($str_value[$i][$j], $pos, true) || is_numeric($str_value[$i][$j][0]) || $str_value[$i][$j][0] === null || $str_value[$i][$j][0] === '-' || $str_value[$i][$j][0] === '.') {
$return['background-position'] .= $str_value[$i][$j];
if (!$have['pos']) {
$return['background-position'] .= ' ';
}
else {
$return['background-position'] .= ',';
}
$have['pos'] = true;
}
elseif (!$have['color']) {
$return['background-color'] .= $str_value[$i][$j] . ',';
$have['color'] = true;
}
}
}
foreach ($background_prop_default as $bg_prop => $default_value) {
if ($return[$bg_prop] !== null) {
$return[$bg_prop] = substr($return[$bg_prop], 0, -1) . $important;
}
else {
$return[$bg_prop] = $default_value . $important;
}
}
return $return;
}
/**
* Merges all background properties
* @param array $input_css
* @return array
* @version 1.0
* @see dissolve_short_bg()
* @todo full CSS 3 compliance
*/
function merge_bg($input_css) {
$background_prop_default =& $GLOBALS['csstidy']['background_prop_default'];
// Max number of background images. CSS3 not yet fully implemented
$number_of_values = @max(count(csstidy_optimise::explode_ws(',', $input_css['background-image'])), count(csstidy_optimise::explode_ws(',', $input_css['background-color'])), 1);
// Array with background images to check if BG image exists
$bg_img_array = @csstidy_optimise::explode_ws(',', csstidy::gvw_important($input_css['background-image']));
$new_bg_value = '';
$important = '';
// if background properties is here and not empty, don't try anything
if (isset($input_css['background']) and $input_css['background']) {
return $input_css;
}
for ($i = 0; $i < $number_of_values; $i++) {
foreach ($background_prop_default as $bg_property => $default_value) {
// Skip if property does not exist
if (!isset($input_css[$bg_property])) {
continue;
}
$cur_value = $input_css[$bg_property];
// skip all optimisation if gradient() somewhere
if (stripos($cur_value, "gradient(") !== FALSE) {
return $input_css;
}
// Skip some properties if there is no background image
if ((!isset($bg_img_array[$i]) || $bg_img_array[$i] === 'none') && ($bg_property === 'background-size' || $bg_property === 'background-position' || $bg_property === 'background-attachment' || $bg_property === 'background-repeat')) {
continue;
}
// Remove !important
if (csstidy::is_important($cur_value)) {
$important = ' !important';
$cur_value = csstidy::gvw_important($cur_value);
}
// Do not add default values
if ($cur_value === $default_value) {
continue;
}
$temp = csstidy_optimise::explode_ws(',', $cur_value);
if (isset($temp[$i])) {
if ($bg_property === 'background-size') {
$new_bg_value .= '(' . $temp[$i] . ') ';
}
else {
$new_bg_value .= $temp[$i] . ' ';
}
}
}
$new_bg_value = trim($new_bg_value);
if ($i != $number_of_values - 1) {
$new_bg_value .= ',';
}
}
// Delete all background-properties
foreach ($background_prop_default as $bg_property => $default_value) {
unset($input_css[$bg_property]);
}
// Add new background property
if ($new_bg_value !== '') {
$input_css['background'] = $new_bg_value . $important;
}
elseif (isset($input_css['background'])) {
$input_css['background'] = 'none';
}
return $input_css;
}
/**
* Dissolve font property
* @param string $str_value
* @return array
* @version 1.3
* @see merge_font()
*/
function dissolve_short_font($str_value) {
$font_prop_default =& $GLOBALS['csstidy']['font_prop_default'];
$font_weight = array(
'normal',
'bold',
'bolder',
'lighter',
100,
200,
300,
400,
500,
600,
700,
800,
900,
);
$font_variant = array(
'normal',
'small-caps',
);
$font_style = array(
'normal',
'italic',
'oblique',
);
$important = '';
$return = array(
'font-style' => null,
'font-variant' => null,
'font-weight' => null,
'font-size' => null,
'line-height' => null,
'font-family' => null,
);
if (csstidy::is_important($str_value)) {
$important = '!important';
$str_value = csstidy::gvw_important($str_value);
}
$have['style'] = false;
$have['variant'] = false;
$have['weight'] = false;
$have['size'] = false;
// Detects if font-family consists of several words w/o quotes
$multiwords = false;
// Workaround with multiple font-family
$str_value = csstidy_optimise::explode_ws(',', trim($str_value));
$str_value[0] = csstidy_optimise::explode_ws(' ', trim($str_value[0]));
for ($j = 0; $j < count($str_value[0]); $j++) {
if ($have['weight'] === false && in_array($str_value[0][$j], $font_weight)) {
$return['font-weight'] = $str_value[0][$j];
$have['weight'] = true;
}
elseif ($have['variant'] === false && in_array($str_value[0][$j], $font_variant)) {
$return['font-variant'] = $str_value[0][$j];
$have['variant'] = true;
}
elseif ($have['style'] === false && in_array($str_value[0][$j], $font_style)) {
$return['font-style'] = $str_value[0][$j];
$have['style'] = true;
}
elseif ($have['size'] === false && (is_numeric($str_value[0][$j][0]) || $str_value[0][$j][0] === null || $str_value[0][$j][0] === '.')) {
$size = csstidy_optimise::explode_ws('/', trim($str_value[0][$j]));
$return['font-size'] = $size[0];
if (isset($size[1])) {
$return['line-height'] = $size[1];
}
else {
$return['line-height'] = '';
// don't add 'normal' !
}
$have['size'] = true;
}
else {
if (isset($return['font-family'])) {
$return['font-family'] .= ' ' . $str_value[0][$j];
$multiwords = true;
}
else {
$return['font-family'] = $str_value[0][$j];
}
}
}
// add quotes if we have several qords in font-family
if ($multiwords !== false) {
$return['font-family'] = '"' . $return['font-family'] . '"';
}
$i = 1;
while (isset($str_value[$i])) {
$return['font-family'] .= ',' . trim($str_value[$i]);
$i++;
}
// Fix for 100 and more font-size
if ($have['size'] === false && isset($return['font-weight']) && is_numeric($return['font-weight'][0])) {
$return['font-size'] = $return['font-weight'];
unset($return['font-weight']);
}
foreach ($font_prop_default as $font_prop => $default_value) {
if ($return[$font_prop] !== null) {
$return[$font_prop] = $return[$font_prop] . $important;
}
else {
$return[$font_prop] = $default_value . $important;
}
}
return $return;
}
/**
* Merges all fonts properties
* @param array $input_css
* @return array
* @version 1.3
* @see dissolve_short_font()
*/
function merge_font($input_css) {
$font_prop_default =& $GLOBALS['csstidy']['font_prop_default'];
$new_font_value = '';
$important = '';
// Skip if not font-family and font-size set
if (isset($input_css['font-family']) && isset($input_css['font-size'])) {
// fix several words in font-family - add quotes
if (isset($input_css['font-family'])) {
$families = explode(",", $input_css['font-family']);
$result_families = array();
foreach ($families as $family) {
$family = trim($family);
$len = strlen($family);
if (strpos($family, " ") && !($family[0] == '"' && $family[$len - 1] == '"' || $family[0] == "'" && $family[$len - 1] == "'")) {
$family = '"' . $family . '"';
}
$result_families[] = $family;
}
$input_css['font-family'] = implode(",", $result_families);
}
foreach ($font_prop_default as $font_property => $default_value) {
// Skip if property does not exist
if (!isset($input_css[$font_property])) {
continue;
}
$cur_value = $input_css[$font_property];
// Skip if default value is used
if ($cur_value === $default_value) {
continue;
}
// Remove !important
if (csstidy::is_important($cur_value)) {
$important = '!important';
$cur_value = csstidy::gvw_important($cur_value);
}
$new_font_value .= $cur_value;
// Add delimiter
$new_font_value .= $font_property === 'font-size' && isset($input_css['line-height']) ? '/' : ' ';
}
$new_font_value = trim($new_font_value);
// Delete all font-properties
foreach ($font_prop_default as $font_property => $default_value) {
if ($font_property !== 'font' or !$new_font_value) {
unset($input_css[$font_property]);
}
}
// Add new font property
if ($new_font_value !== '') {
$input_css['font'] = $new_font_value . $important;
}
}
return $input_css;
}
}Members
Name |
Modifiers | Type | Description | Overrides |
|---|---|---|---|---|
|
csstidy_optimise:: |
function | Checks if a given string is a CSS valid number. If it is, an array containing the value and unit is returned | ||
|
csstidy_optimise:: |
function | Removes unnecessary whitespace in ! important | ||
|
csstidy_optimise:: |
function | Compresses numbers (ie. 1.0 becomes 1 or 1.100 becomes 1.1 ) | ||
|
csstidy_optimise:: |
function | Constructor | ||
|
csstidy_optimise:: |
function | Color compression function. Converts all rgb() values to #-values and uses the short-form if possible. Also replaces 4 color names by #-values. | ||
|
csstidy_optimise:: |
function | Removes invalid selectors and their corresponding rule-sets as defined by 4.1.7 in REC-CSS2. This is a very rudimentary check and should be replaced by a full-blown parsing algorithm or regular expression @version 1.4 | ||
|
csstidy_optimise:: |
function | Dissolves properties like padding:10px 10px 10px to padding-top:10px;padding-bottom:10px;... | ||
|
csstidy_optimise:: |
function | Dissolve background property | ||
|
csstidy_optimise:: |
function | Dissolve font property | ||
|
csstidy_optimise:: |
function | Explodes a string as explode() does, however, not if $sep is escaped or within a string. | ||
|
csstidy_optimise:: |
function | Merges Shorthand properties again, the opposite of dissolve_4value_shorthands() | ||
|
csstidy_optimise:: |
function | Merges all background properties | ||
|
csstidy_optimise:: |
function | Merges all fonts properties | ||
|
csstidy_optimise:: |
function | Merges selectors with same properties. Example: a{color:red} b{color:red} -> a,b{color:red} Very basic and has at least one bug. Hopefully there is a replacement soon. | ||
|
csstidy_optimise:: |
function | Optimises $css after parsing @access public @version 1.0 | ||
|
csstidy_optimise:: |
function | Compresses shorthand values. Example: margin:1px 1px 1px 1px -> margin:1px | ||
|
csstidy_optimise:: |
function | Optimises shorthands @access public @version 1.0 | ||
|
csstidy_optimise:: |
function | Optimises a sub-value @access public @version 1.0 | ||
|
csstidy_optimise:: |
function | Optimises values @access public @version 1.0 |