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<?php
/**
* LESSPHP wrapper
*
* @package vamtam/nex
*/
/**
* class VamtamLessBridge
*/
class VamtamLessBridge {
/**
* List of option names which are known to be percentages
*
* @var array
*/
public static $percentages = array(
'left-sidebar-width',
'right-sidebar-width',
);
/**
* List of option names which are known to be numbers
*
* @var array
*/
public static $numbers = array(
);
public static function prepare_vars_for_export( $vars_raw, $deprecated = '' ) {
global $wpdb, $vamtam_defaults;
$vars_raw = self::flatten_vars( apply_filters( 'vamtam_less_vars', $vars_raw ) );
$vars = array();
foreach ( $vars_raw as $name => $value ) {
if ( trim( $value ) === '' && preg_match( '/\bbackground-image\b/i', $name ) ) {
$vars[ $name ] = '';
continue;
}
if ( preg_match( '/^[-\w\d]+$/i', $name ) ) {
$vars[ $name ] = self::prepare( $name, $value );
}
}
$vars = array_merge(
$vars,
apply_filters( 'vamtam-additional-css-variables', include( VAMTAM_CSS_DIR . 'additional-css-variables.php' ) )
);
// -----------------------------------------------------------------------------
$out = array();
foreach ( $vars as $name => $value_raw ) {
$value = $value_raw;
if ( ! $value_raw ) {
$value = '';
if ( strpos( $name, 'background-attachment' ) !== false ) {
$value = 'scroll';
} elseif ( strpos( $name, 'background-position' ) !== false ) {
$value = 'left top';
} elseif ( strpos( $name, 'background-repeat' ) !== false ) {
$value = 'no-repeat';
} elseif ( strpos( $name, 'background-size' ) !== false ) {
$value = 'auto';
}
}
if ( ! is_null( $value_raw ) ) {
if ( preg_match( '/-variant$/', $name ) ) {
$weight = 'normal';
$style = 'normal';
$value = explode( ' ', $value );
if ( count( $value ) === 2 ) {
list( $weight, $style ) = $value;
} elseif ( $value[0] === 'italic' ) {
$style = 'italic';
} else {
$weight = $value[0];
}
$name = str_replace( 'variant', '', $name );
$out[ $name . 'font-weight' ] = $weight;
$out[ $name . 'font-style' ] = $style;
} elseif ( preg_match( '/-background-image$/', $name ) ) {
$out[ $name ] = $value === '' ? 'none' : "url({$value})";
} elseif ( ! preg_match( '/-(weight|style)$/', $name ) ) {
$out[ $name ] = $value;
}
}
}
return $out;
}
private static function flatten_vars( $vars, $prefix = '' ) {
$flat_vars = array();
foreach ( $vars as $key => $var ) {
if ( is_array( $var ) ) {
$flat_vars = array_merge( $flat_vars, self::flatten_vars( $var, $prefix . $key . '-' ) );
unset( $flat_vars[ $key ] );
} else {
$flat_vars[ $prefix . $key ] = $var;
}
}
return $flat_vars;
}
/**
* Sanitizes a variable
*
* @param string $name option name
* @param string $value option value from db
* @param boolean $returnOriginal whether to return the db value if no good sanitization is found
* @return int|string|null sanitized value
*/
private static function prepare( $name, $value, $returnOriginal = false ) {
$good = true;
$name = preg_replace( '/^vamtam_/', '', $name );
$originalValue = $value;
// duck typing values
if ( preg_match( '/(^share|^has-|^show|-last$|-subsets$|-google$)/i', $name ) ) {
$good = false;
} elseif ( preg_match( '/(%|px|em)$/i', $value ) ) { // definitely a number, leave it as is
} elseif ( is_numeric( $value ) ) { // most likely dimensions, must differentiate between percentages and pixels
if ( in_array( $name, self::$percentages ) ) {
$value .= '%';
} elseif ( in_array( $name, self::$numbers ) || strpos( $name, 'line-height' ) !== false ) {
// as it is
} elseif ( preg_match( '/(size|width|height)$/', $name ) || preg_match( '/padding|margin/', $name ) ) { // treat as px
$value .= 'px';
}
} elseif ( preg_match( '/^#([0-9a-f]{3}|[0-9a-f]{6})$/i', $value ) || ( $value === '' && preg_match( '/-color$/', $name ) ) ) { // colors
// as is
} elseif ( preg_match( '/-font-family$/', $name ) && strpos( $value, ',' ) !== false ) {
// as is
} elseif ( preg_match( '/^http|^url/i', $value ) || ( preg_match( '/(family|weight)$/', $name ) && isset( $value[0] ) && ! in_array( $value[0], array( '"', "'" ) ) ) ) { // urls and other strings
$value = "'" . str_replace( "'", '"', $value ) . "'";
} elseif ( preg_match( '/^accent(?:-color-)?\d$/', $value ) ) { // accents
$value = vamtam_sanitize_accent( $value );
} else {
if ( ! preg_match( '/\bfamily\b|\burl\b|\bcolor\b/i', $name ) ) {
// check keywords
$keywords = explode( ' ', 'top right bottom left fixed static scroll cover contain auto repeat repeat-x repeat-y no-repeat center normal italic bold 100 200 300 400 500 600 700 800 900 transparent' );
$sub_values = explode( ' ', $value );
foreach ( $sub_values as $s ) {
if ( ! in_array( $s, $keywords ) ) {
$good = false;
break;
}
}
}
}
return $good ? $value : ( $returnOriginal ? $originalValue : null );
}
}