/**
* Parses CSS in a string. The output is saved as an array in $this->css.
*
* @since 1.0.0
*
* @param string $string The CSS code.
* @return bool [return value]
*/
public function parse($string)
{
// Temporarily set locale to en_US in order to handle floats properly.
$old = @setlocale(LC_ALL, 0);
@setlocale(LC_ALL, 'C');
$all_properties =& $this->data['csstidy']['all_properties'];
$at_rules =& $this->data['csstidy']['at_rules'];
$quoted_string_properties =& $this->data['csstidy']['quoted_string_properties'];
$this->css = array();
$this->print->input_css = $string;
$string = str_replace("\r\n", "\n", $string) . ' ';
$cur_comment = '';
for ($i = 0, $size = strlen($string); $i < $size; $i++) {
if ("\n" === $string[$i] || "\r" === $string[$i]) {
++$this->line;
}
switch ($this->status) {
/* Case in at-block */
case 'at':
if ($this->is_token($string, $i)) {
if ('/' === $string[$i] && '*' === @$string[$i + 1]) {
$this->status = 'ic';
++$i;
$this->from[] = 'at';
} elseif ('{' === $string[$i]) {
$this->status = 'is';
$this->at = $this->css_new_media_section($this->at);
$this->_add_token(AT_START, $this->at);
} elseif (',' === $string[$i]) {
$this->at = trim($this->at) . ',';
} elseif ('\\' === $string[$i]) {
$this->at .= $this->_unicode($string, $i);
} elseif (in_array($string[$i], array('(', ')', ':', '.', '/'), true)) {
$this->at .= $string[$i];
}
} else {
$lastpos = strlen($this->at) - 1;
if (!((ctype_space($this->at[$lastpos]) || $this->is_token($this->at, $lastpos) && ',' === $this->at[$lastpos]) && ctype_space($string[$i]))) {
$this->at .= $string[$i];
}
}
break;
/* Case in-selector */
/* Case in-selector */
case 'is':
if ($this->is_token($string, $i)) {
if ('/' === $string[$i] && '*' === @$string[$i + 1] && '' === trim($this->selector)) {
$this->status = 'ic';
++$i;
$this->from[] = 'is';
} elseif ('@' === $string[$i] && '' === trim($this->selector)) {
// Check for at-rule.
$this->invalid_at = true;
foreach ($at_rules as $name => $type) {
if (!strcasecmp(substr($string, $i + 1, strlen($name)), $name)) {
if ('at' === $type) {
$this->at = '@' . $name;
} else {
$this->selector = '@' . $name;
}
if ('atis' === $type) {
$this->next_selector_at = $this->next_selector_at ? $this->next_selector_at : ($this->at ? $this->at : DEFAULT_AT);
$this->at = $this->css_new_media_section(' ');
$type = 'is';
}
$this->status = $type;
$i += strlen($name);
$this->invalid_at = false;
}
}
if ($this->invalid_at) {
$this->selector = '@';
$invalid_at_name = '';
for ($j = $i + 1; $j < $size; ++$j) {
if (!ctype_alpha($string[$j])) {
break;
}
$invalid_at_name .= $string[$j];
}
$this->log('Invalid @-rule: ' . $invalid_at_name . ' (removed)', 'Warning');
}
} elseif ('"' === $string[$i] || "'" === $string[$i]) {
$this->cur_string[] = $string[$i];
$this->status = 'instr';
$this->str_char[] = $string[$i];
$this->from[] = 'is';
/* Fixing CSS3 attribute selectors, i.e. a[href$=".mp3" */
$this->quoted_string[] = '=' === $string[$i - 1];
} elseif ($this->invalid_at && ';' === $string[$i]) {
$this->invalid_at = false;
$this->status = 'is';
if ($this->next_selector_at) {
$this->at = $this->css_new_media_section($this->next_selector_at);
$this->next_selector_at = '';
}
} elseif ('{' === $string[$i]) {
$this->status = 'ip';
if ('' === $this->at) {
$this->at = $this->css_new_media_section(DEFAULT_AT);
}
$this->selector = $this->css_new_selector($this->at, $this->selector);
$this->_add_token(SEL_START, $this->selector);
$this->added = false;
} elseif ('}' === $string[$i]) {
$this->_add_token(AT_END, $this->at);
$this->at = '';
$this->selector = '';
$this->sel_separate = array();
} elseif (',' === $string[$i]) {
$this->selector = trim($this->selector) . ',';
$this->sel_separate[] = strlen($this->selector);
} elseif ('\\' === $string[$i]) {
$this->selector .= $this->_unicode($string, $i);
} elseif ('*' === $string[$i] && @in_array($string[$i + 1], array('.', '#', '[', ':'), true) && (0 === $i || '/' !== $string[$i - 1])) {
// Remove unnecessary universal selector, FS#147, but not comment in selector.
} else {
$this->selector .= $string[$i];
}
} else {
$lastpos = strlen($this->selector) - 1;
if (-1 === $lastpos || !((ctype_space($this->selector[$lastpos]) || $this->is_token($this->selector, $lastpos) && ',' === $this->selector[$lastpos]) && ctype_space($string[$i]))) {
$this->selector .= $string[$i];
}
}
break;
/* Case in-property */
/* Case in-property */
case 'ip':
if ($this->is_token($string, $i)) {
if ((':' === $string[$i] || '=' === $string[$i]) && '' !== $this->property) {
$this->status = 'iv';
if (!$this->get_cfg('discard_invalid_properties') || $this->property_is_valid($this->property)) {
$this->property = $this->css_new_property($this->at, $this->selector, $this->property);
$this->property = strtolower($this->property);
$this->_add_token(PROPERTY, $this->property);
}
} elseif ('/' === $string[$i] && '*' === @$string[$i + 1] && '' === $this->property) {
$this->status = 'ic';
++$i;
$this->from[] = 'ip';
} elseif ('}' === $string[$i]) {
$this->explode_selectors();
$this->status = 'is';
$this->invalid_at = false;
$this->_add_token(SEL_END, $this->selector);
$this->selector = '';
$this->property = '';
if ($this->next_selector_at) {
$this->at = $this->css_new_media_section($this->next_selector_at);
$this->next_selector_at = '';
}
} elseif (';' === $string[$i]) {
$this->property = '';
} elseif ('\\' === $string[$i]) {
$this->property .= $this->_unicode($string, $i);
} elseif ('' === $this->property && !ctype_space($string[$i]) || ('/' === $this->property || '/' === $string[$i])) {
$this->property .= $string[$i];
}
} elseif (!ctype_space($string[$i])) {
$this->property .= $string[$i];
}
break;
/* Case in-value */
/* Case in-value */
case 'iv':
$pn = ("\n" === $string[$i] || "\r" === $string[$i]) && $this->property_is_next($string, $i + 1) || $i === strlen($string) - 1;
if (($this->is_token($string, $i) || $pn) && !(',' === $string[$i] && !ctype_space($string[$i + 1]))) {
if ('/' === $string[$i] && '*' === @$string[$i + 1]) {
$this->status = 'ic';
++$i;
$this->from[] = 'iv';
} elseif ('"' === $string[$i] || "'" === $string[$i] || '(' === $string[$i]) {
$this->cur_string[] = $string[$i];
$this->str_char[] = '(' === $string[$i] ? ')' : $string[$i];
$this->status = 'instr';
$this->from[] = 'iv';
$this->quoted_string[] = in_array(strtolower($this->property), $quoted_string_properties, true);
} elseif (',' === $string[$i]) {
$this->sub_value = trim($this->sub_value) . ',';
} elseif ('\\' === $string[$i]) {
$this->sub_value .= $this->_unicode($string, $i);
} elseif (';' === $string[$i] || $pn) {
if ('@' === $this->selector[0] && isset($at_rules[substr($this->selector, 1)]) && 'iv' === $at_rules[substr($this->selector, 1)]) {
$this->status = 'is';
switch ($this->selector) {
case '@charset':
// Add quotes to charset.
$this->sub_value_arr[] = '"' . trim($this->sub_value) . '"';
$this->charset = $this->sub_value_arr[0];
break;
case '@namespace':
// Add quotes to namespace.
$this->sub_value_arr[] = '"' . trim($this->sub_value) . '"';
$this->namespace = implode(' ', $this->sub_value_arr);
break;
case '@import':
$this->sub_value = trim($this->sub_value);
if (empty($this->sub_value_arr)) {
// Quote URLs in imports only if they're not already inside url() and not already quoted.
if ('url(' !== substr($this->sub_value, 0, 4)) {
if (!($this->sub_value[0] === substr($this->sub_value, -1) && in_array($this->sub_value[0], array("'", '"'), true))) {
$this->sub_value = '"' . $this->sub_value . '"';
}
}
}
$this->sub_value_arr[] = $this->sub_value;
$this->import[] = implode(' ', $this->sub_value_arr);
break;
}
$this->sub_value_arr = array();
$this->sub_value = '';
$this->selector = '';
$this->sel_separate = array();
} else {
$this->status = 'ip';
}
} elseif ('}' !== $string[$i]) {
$this->sub_value .= $string[$i];
}
if (('}' === $string[$i] || ';' === $string[$i] || $pn) && !empty($this->selector)) {
if ('' === $this->at) {
$this->at = $this->css_new_media_section(DEFAULT_AT);
}
// Case settings.
if ($this->get_cfg('lowercase_s')) {
$this->selector = strtolower($this->selector);
}
$this->property = strtolower($this->property);
$this->optimise->subvalue();
if ('' !== $this->sub_value) {
$this->sub_value_arr[] = $this->sub_value;
$this->sub_value = '';
}
$this->value = '';
while (count($this->sub_value_arr)) {
$sub = array_shift($this->sub_value_arr);
if (strstr($this->selector, 'font-face')) {
$sub = $this->quote_font_format($sub);
}
if ('' !== $sub) {
if (strlen($this->value) && (',' !== substr($this->value, -1, 1) || $this->get_cfg('preserve_css'))) {
$this->value .= ' ';
}
$this->value .= $sub;
}
}
$this->optimise->value();
$valid = $this->property_is_valid($this->property);
if ((!$this->invalid_at || $this->get_cfg('preserve_css')) && (!$this->get_cfg('discard_invalid_properties') || $valid)) {
$this->css_add_property($this->at, $this->selector, $this->property, $this->value);
$this->_add_token(VALUE, $this->value);
$this->optimise->shorthands();
}
if (!$valid) {
if ($this->get_cfg('discard_invalid_properties')) {
$this->log('Removed invalid property: ' . $this->property, 'Warning');
} else {
$this->log('Invalid property in ' . strtoupper($this->get_cfg('css_level')) . ': ' . $this->property, 'Warning');
}
}
$this->property = '';
$this->sub_value_arr = array();
$this->value = '';
}
if ('}' === $string[$i]) {
$this->explode_selectors();
$this->_add_token(SEL_END, $this->selector);
$this->status = 'is';
$this->invalid_at = false;
$this->selector = '';
if ($this->next_selector_at) {
$this->at = $this->css_new_media_section($this->next_selector_at);
$this->next_selector_at = '';
}
}
} elseif (!$pn) {
$this->sub_value .= $string[$i];
if (ctype_space($string[$i]) || ',' === $string[$i]) {
$this->optimise->subvalue();
if ('' !== $this->sub_value) {
$this->sub_value_arr[] = $this->sub_value;
$this->sub_value = '';
}
}
}
break;
/* Case in string */
/* Case in string */
case 'instr':
$_str_char = $this->str_char[count($this->str_char) - 1];
$_cur_string = $this->cur_string[count($this->cur_string) - 1];
$_quoted_string = $this->quoted_string[count($this->quoted_string) - 1];
$temp_add = $string[$i];
// Add another string to the stack. Strings can't be nested inside of quotes, only parentheses,
// but parentheticals can be nested more than once.
if (')' === $_str_char && ('(' === $string[$i] || '"' === $string[$i] || '\\' === $string[$i]) && !$this->escaped($string, $i)) {
$this->cur_string[] = $string[$i];
$this->str_char[] = '(' === $string[$i] ? ')' : $string[$i];
$this->from[] = 'instr';
$this->quoted_string[] = ')' === $_str_char && '(' !== $string[$i] && '(' === trim($_cur_string) ? $_quoted_string : '(' !== $string[$i];
continue;
}
if (')' !== $_str_char && ("\n" === $string[$i] || "\r" === $string[$i]) && !('\\' === $string[$i - 1] && !$this->escaped($string, $i - 1))) {
$temp_add = '\\A';
$this->log('Fixed incorrect newline in string', 'Warning');
}
$_cur_string .= $temp_add;
if ($string[$i] === $_str_char && !$this->escaped($string, $i)) {
$this->status = array_pop($this->from);
if (!preg_match('|[' . implode('', $this->data['csstidy']['whitespace']) . ']|uis', $_cur_string) && 'content' !== $this->property) {
if (!$_quoted_string) {
if (')' !== $_str_char) {
// Convert properties like
// font-family: 'Arial';
// to
// font-family: Arial;
// or
// url("abc")
// to
// url(abc)
$_cur_string = substr($_cur_string, 1, -1);
}
} else {
$_quoted_string = false;
}
}
array_pop($this->cur_string);
array_pop($this->quoted_string);
array_pop($this->str_char);
if (')' === $_str_char) {
$_cur_string = "(" . trim(substr($_cur_string, 1, -1)) . ")";
}
if ('iv' === $this->status) {
if (!$_quoted_string) {
if (false !== strpos($_cur_string, ',')) {
// We can on only remove space next to ','
$_cur_string = implode(',', array_map('trim', explode(',', $_cur_string)));
}
// and multiple spaces (too expensive).
if (false !== strpos($_cur_string, ' ')) {
$_cur_string = preg_replace(',\\s+,', ' ', $_cur_string);
}
}
$this->sub_value .= $_cur_string;
} elseif ('is' === $this->status) {
$this->selector .= $_cur_string;
} elseif ('instr' === $this->status) {
$this->cur_string[count($this->cur_string) - 1] .= $_cur_string;
}
} else {
$this->cur_string[count($this->cur_string) - 1] = $_cur_string;
}
break;
/* Case in-comment */
/* Case in-comment */
case 'ic':
if ('*' === $string[$i] && '/' === $string[$i + 1]) {
$this->status = array_pop($this->from);
$i++;
$this->_add_token(COMMENT, $cur_comment);
$cur_comment = '';
} else {
$cur_comment .= $string[$i];
}
break;
}
}
$this->optimise->postparse();
$this->print->_reset();
// Set locale back to original setting.
@setlocale(LC_ALL, $old);
return !(empty($this->css) && empty($this->import) && empty($this->charset) && empty($this->tokens) && empty($this->namespace));
}
/**
* [postparse description]
*
* @since 1.0.0
*
* @return [type] [description]
*/
public function postparse()
{
if (!empty($this->parser->import)) {
$this->parser->import = array();
}
if (!empty($this->parser->charset)) {
$this->parser->charset = array();
}
return parent::postparse();
}