mirror of
https://github.com/silverstripe/silverstripe-framework
synced 2024-10-22 14:05:37 +02:00
50b2f7180f
git-svn-id: svn://svn.silverstripe.com/silverstripe/open/modules/sapphire/trunk@47306 467b73ca-7a2a-4603-9d3b-597d59a354a9
325 lines
9.5 KiB
PHP
Executable File
325 lines
9.5 KiB
PHP
Executable File
<?php
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/**
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* Library of conversion functions, implemented as static methods.
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*
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* The methods are all of the form (format)2(format), where the format is one of
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*
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* raw: A UTF8 string
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* attr: A UTF8 string suitable for inclusion in an HTML attribute
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* js: A UTF8 string suitable for inclusion in a double-quoted javascript string.
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*
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* array: A PHP associative array
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* json: JavaScript object notation
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*
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* html: HTML source suitable for use in a page or email
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* text: Plain-text content, suitable for display to a user as-is, or insertion in a plaintext email.
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*/
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class Convert extends Object {
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// Convert raw to other formats
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static function raw2att($val) {
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if(is_array($val)) {
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foreach($val as $k => $v) $val[$k] = self::raw2att($v);
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return $val;
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} else {
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return str_replace(array('&','"',"'",'<','>'),array('&','"',''','<','>'),$val);
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}
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}
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/**
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* @see http://www.w3.org/TR/REC-html40/types.html#type-cdata
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*/
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static function raw2htmlatt($val) {
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if(is_array($val)) {
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foreach($val as $k => $v) $val[$k] = self::raw2att($v);
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return $val;
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} else {
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$val = str_replace(array('&','"',"'",'<','>'),array('&','"',''','<','>'),$val);
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$val = preg_replace('^[a-zA-Z0-9\-_]','_', $val);
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$val = preg_replace('^[0-9]*','', $val); //
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return $val;
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}
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}
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static function raw2xml($val) {
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if(is_array($val)) {
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foreach($val as $k => $v) $val[$k] = self::raw2xml($v);
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return $val;
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} else {
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return str_replace(array('&', '<', '>', "\n"), array('&', '<', '>', '<br />'), $val);
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}
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}
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static function raw2js($val) {
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if(is_array($val)) {
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foreach($val as $k => $v) $val[$k] = self::raw2js($v);
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return $val;
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} else {
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return str_replace(array("\\", '"',"\n","\r", "'"), array("\\\\", '\"','\n','\r', "\\'"), $val);
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}
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}
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// TODO Possible security risk: doesn't support arrays with more than one level - should be called recursively
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static function raw2sql($val) {
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if(is_array($val)) {
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foreach($val as $k => $v) $val[$k] = self::raw2sql($v);
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return $val;
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} else {
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return addslashes($val);
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}
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}
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/**
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* Convert XML to raw text
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* @todo Currently &#xxx; entries are stripped; they should be converted
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*/
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static function xml2raw($val) {
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if(is_array($val)) {
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foreach($val as $k => $v) $val[$k] = self::xml2raw($v);
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return $val;
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} else {
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// More complex text needs to use html2raw instaed
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if(strpos($val,'<') !== false) return self::html2raw($val);
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// For simpler stuff, a simple str_replace will do
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else {
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$converted = str_replace(array('&', '<', '>'), array('&', '<', '>'), $val);
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$converted = ereg_replace('&#[0-9]+;', '', $converted);
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return $converted;
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}
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}
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}
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static function xml2js($val) {
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return self::raw2js(self::html2raw($val));
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}
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static function xml2att($val) {
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return self::raw2att(self::xml2raw($val));
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}
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static function xml2sql($val) {
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return self::raw2sql(self::xml2raw($val));
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}
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// Convert JS to other formats
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static function js2raw($val) {
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if(is_array($val)) {
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foreach($val as $k => $v) $val[$k] = self::js2raw($v);
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return $val;
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} else {
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return str_replace(array('\"','\n','\r'), array('"',"\n","\r"), $val);
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}
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}
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static function js2xml($val) {
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return self::raw2xml(self::js2raw($val));
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}
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static function js2att($val) {
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return self::raw2att(self::js2raw($val));
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}
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static function js2sql($val) {
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return self::raw2sql(self::js2raw($val));
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}
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static function xml2array($val) {
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return preg_split( '/\s*(<[^>]+>)|\s\s*/', $val, -1, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY );
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}
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static function array2json( $array ) {
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$result = array();
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// Debug::show($array);
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foreach( $array as $key => $value )
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if( is_array( $value ) )
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$result[] = "'$key':" . Convert::array2json( $value );
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else
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$result[] = "'$key':'$value'";
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return '{' . implode( ', ', $result ) . '}';
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}
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/**
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* Create a link if the string is a valid URL
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* @param string The string to linkify
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* @return A link to the URL if string is a URL
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*/
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static function linkIfMatch($string) {
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if( preg_match( '/^[a-z+]+\:\/\/[a-zA-Z0-9$-_.+?&=!*\'()%]+$/', $string ) )
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return "<a style=\"white-space: nowrap\" href=\"$string\">$string</a>";
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else
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return $string;
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}
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/**
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* Create a link if the string is a valid URL
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* @param string The string to linkify
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* @return A link to the URL if string is a URL
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*/
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/*static function mailtoIfMatch($string) {
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if( preg_match( '/^[a-z+]+\:\/\/[a-zA-Z0-9$-_.+?&=!*\'()%]+$/', $string ) )
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return "<a href=\"$string\">$string</a>";
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else
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return $string;
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}*/
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/**
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* Simple conversion of HTML to plaintext.
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*
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* @param $data string
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* @param $preserveLinks boolean
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* @param $wordwrap array
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*/
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static function html2raw($data, $preserveLinks = false, $wordWrap = 60, $config = null) {
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$defaultConfig = array(
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'PreserveLinks' => false,
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'ReplaceBoldAsterisk' => true,
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'CompressWhitespace' => true,
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'ReplaceImagesWithAlt' => true,
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);
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if(isset($config)) {
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$config = array_merge($defaultConfig,$config);
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} else {
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$config = $defaultConfig;
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}
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// sTRIp style and script
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/* $data = eregi_replace("<style(^A-Za-z0-9>][^>]*)?>.*</style[^>]*>","", $data);*/
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/* $data = eregi_replace("<script(^A-Za-z0-9>][^>]*)?>.*</script[^>]*>","", $data);*/
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$data = preg_replace("/<style(^A-Za-z0-9>][^>]*)?>.*?<\/style[^>]*>/i","", $data);
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$data = preg_replace("/<script(^A-Za-z0-9>][^>]*)?>.*?<\/script[^>]*>/i","", $data);
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// TODO Deal with attributes inside tags
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if($config['ReplaceBoldAsterisk']) {
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$data = str_ireplace(
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array('<strong>','</strong>','<b>','</b>'),
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'*',
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$data
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);
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}
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// Expand hyperlinks
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if( !$preserveLinks && !isset($config['PreserveLink'])) {
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$data = preg_replace('/<a[^>]*href\s*=\s*"([^"]*)">(.*?)<\/a>/ie', "Convert::html2raw('\\2').'[\\1]'", $data);
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$data = preg_replace('/<a[^>]*href\s*=\s*([^ ]*)>(.*?)<\/a>/ie', "Convert::html2raw('\\2').'[\\1]'", $data);
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/* $data = eregi_replace('<a[^>]*href *= *"([^"]*)">([^<>]*)</a>', '\\2 [\\1]', $data); */
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/* $data = eregi_replace('<a[^>]*href *= *([^ ]*)>([^<>]*)</a>', '\\2 [\\1]', $data); */
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}
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// Replace images with their alt tags
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if($config['ReplaceImagesWithAlt']) {
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$data = eregi_replace('<img[^>]*alt *= *"([^"]*)"[^>]*>', ' \\1 ', $data);
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$data = eregi_replace('<img[^>]*alt *= *([^ ]*)[^>]*>', ' \\1 ', $data);
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}
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// Compress whitespace
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if($config['CompressWhitespace']) {
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$data = ereg_replace("[\n\r\t ]+", " ", $data);
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}
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// Parse newline tags
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$data = ereg_replace("[ \n\r\t]*<[Hh][1-6]([^A-Za-z0-9>][^>]*)?> *", "\n\n", $data);
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$data = ereg_replace("[ \n\r\t]*<[Pp]([^A-Za-z0-9>][^>]*)?> *", "\n\n", $data);
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$data = ereg_replace("[ \n\r\t]*<[Dd][Ii][Vv]([^A-Za-z0-9>][^>]*)?> *", "\n\n", $data);
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$data = ereg_replace("\n\n\n+","\n\n", $data);
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$data = ereg_replace("<[Bb][Rr]([^A-Za-z0-9>][^>]*)?> *", "\n", $data);
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$data = ereg_replace("<[Tt][Rr]([^A-Za-z0-9>][^>]*)?> *", "\n", $data);
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$data = ereg_replace("</[Tt][Dd]([^A-Za-z0-9>][^>]*)?> *", " ", $data);
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$data = preg_replace('/<\/p>/i', "\n\n", $data );
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// Replace HTML entities
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$data = preg_replace("/&#([0-9]+);/e", 'chr(\1)', $data);
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$data = str_replace(array("<",">","&"," "), array("<", ">", "&", " "), $data);
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// Remove all tags (but optionally keep links)
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// strip_tags seemed to be restricting the length of the output
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// arbitrarily. This essentially does the same thing.
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if( !$preserveLinks ) {
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$data = preg_replace('/<\/?[^>]*>/','', $data);
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} else {
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$data = strip_tags($data, '<a>');
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}
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return trim(wordwrap(trim($data), $wordWrap));
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}
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/**
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* There are no real specifications on correctly encoding mailto-links,
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* but this seems to be compatible with most of the user-agents.
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* Does nearly the same as rawurlencode().
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* Please only encode the values, not the whole url, e.g.
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* "mailto:test@test.com?subject=" . Convert::raw2mailto($subject)
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*
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* @param $data string
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* @return string
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* @see http://www.ietf.org/rfc/rfc1738.txt
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*/
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static function raw2mailto($data) {
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return str_ireplace(
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array("\n",'?','=',' ','(',')','&','@','"','\'',';'),
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array('%0A','%3F','%3D','%20','%28','%29','%26','%40','%22','%27','%3B'),
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$data
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);
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}
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////////////////////////////////////////////////////////////////////////////////////////////////
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// Deprecated
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/**
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* Converts the given val from a raw string into HTML.
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* has support for multibyte charaters.
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*
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* @param $val the string you wish to convert
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* @return the HTML version of the string
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* @deprecated
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*/
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static function raw2html($val) {
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user_error("Convert::raw2html is deprecated. Used Convert::raw2xml instead", E_USER_NOTICE);
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return self::raw2xml($val);
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}
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/**
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* @deprecated
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*/
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static function html2plain($val){
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user_error("html2plain is deprecated. Use xml2raw instead.", E_USER_NOTICE);
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return self::html2raw($val);
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}
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/**
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* @deprecated
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*/
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static function html2text($val, $preserveLinks = false) {
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user_error("html2text is deprecated. Use xml2raw instead.", E_USER_NOTICE);
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return self::html2raw($val);
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}
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/**
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* @deprecated
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*/
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static function raw2reserveNL($val){
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user_error("Convert::raw2reserveNL is deprecated. Used Convert::raw2xml instead", E_USER_NOTICE);
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return self::raw2xml($val);
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}
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/**
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* @deprecated
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*/
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static function raw2attr($val) {
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user_error("raw2attr is deprecated. Use raw2att instead.", E_USER_WARNING);
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return self::raw2att($val);
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}
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}
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?>
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