first commit

wp-content/plugins/sitepress-multilingual-cms/inc/functions-sanitation.php

@@ -0,0 +1,74 @@
+<?php
+/**
+ * @param string $input
+ * @param string $default_if_invalid
+ *
+ * @return string
+ */
+function wpml_sanitize_hex_color( $input, $default_if_invalid = '' ) {
+	$input  = sanitize_text_field( $input );
+	$result = $input;
+	if ( ! is_string( $input ) || ! wpml_is_valid_hex_color( $input ) ) {
+		$result = $default_if_invalid;
+	}
+
+	return $result;
+}
+
+function wpml_sanitize_hex_color_array( $input, $default_if_invalid = '', $bypass_non_strings = true, $recursive = false ) {
+	$result = $input;
+	if ( is_array( $input ) ) {
+		$result = array();
+		foreach ( $input as $key => $value ) {
+			if ( is_array( $value ) && $recursive ) {
+				$result[ $key ] = wpml_sanitize_hex_color_array( $value, $default_if_invalid, $recursive );
+			} elseif ( is_string( $value ) ) {
+				$result[ $key ] = wpml_sanitize_hex_color( $value, $default_if_invalid );
+			} elseif ( $bypass_non_strings ) {
+				$result[ $key ] = $value;
+			}
+		}
+	}
+
+	return $result;
+}
+
+/**
+ * @param string $input
+ *
+ * @return bool
+ */
+function wpml_is_valid_hex_color( $input ) {
+	if ( 'transparent' === $input || preg_match( '/' . wpml_get_valid_hex_color_pattern() . '/i', $input ) ) {
+		$is_valid = true;
+	} else {
+		$try_rgb2hex = wpml_rgb_to_hex( $input );
+		$is_valid    = $try_rgb2hex ? preg_match( '/' . wpml_get_valid_hex_color_pattern() . '/i', $try_rgb2hex ) : false;
+	}
+
+	return $is_valid;
+}
+
+function wpml_get_valid_hex_color_pattern() {
+	return '(^#[a-fA-F0-9]{6}$)|(^#[a-fA-F0-9]{3}$)';
+}
+
+/**
+ * Convert RGB color code to HEX code.
+ *
+ * @param array $rgb
+ *
+ * @return bool|string
+ */
+function wpml_rgb_to_hex( $rgb ) {
+	if ( ! is_array( $rgb ) || count( $rgb ) < 3 ) {
+		return false;
+	}
+
+	$hex  = '#';
+	$hex .= str_pad( dechex( $rgb[0] ), 2, '0', STR_PAD_LEFT );
+	$hex .= str_pad( dechex( $rgb[1] ), 2, '0', STR_PAD_LEFT );
+	$hex .= str_pad( dechex( $rgb[2] ), 2, '0', STR_PAD_LEFT );
+
+	return $hex;
+}