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