mirror of
https://github.com/friendica/friendica
synced 2024-12-22 19:20:17 +00:00
Split text.php to Strings class
move functions to new strings class Split text.php to Strings class move functions to new Strings class
This commit is contained in:
Adam Magness
parent
1a3c88b042
commit
fd597472f1
2 changed files with 405 additions and 356 deletions
356
include/text.php
356
include/text.php
|
|
@ -31,139 +31,6 @@ use Friendica\Content\Text\HTML;
|
|||
|
||||
require_once "include/conversation.php";
|
||||
|
||||
/**
|
||||
* @brief Generates a pseudo-random string of hexadecimal characters
|
||||
*
|
||||
* @param int $size
|
||||
* @return string
|
||||
*/
|
||||
function random_string($size = 64)
|
||||
{
|
||||
$byte_size = ceil($size / 2);
|
||||
|
||||
$bytes = random_bytes($byte_size);
|
||||
|
||||
$return = substr(bin2hex($bytes), 0, $size);
|
||||
|
||||
return $return;
|
||||
}
|
||||
|
||||
/**
|
||||
* This is our primary input filter.
|
||||
*
|
||||
* The high bit hack only involved some old IE browser, forget which (IE5/Mac?)
|
||||
* that had an XSS attack vector due to stripping the high-bit on an 8-bit character
|
||||
* after cleansing, and angle chars with the high bit set could get through as markup.
|
||||
*
|
||||
* This is now disabled because it was interfering with some legitimate unicode sequences
|
||||
* and hopefully there aren't a lot of those browsers left.
|
||||
*
|
||||
* Use this on any text input where angle chars are not valid or permitted
|
||||
* They will be replaced with safer brackets. This may be filtered further
|
||||
* if these are not allowed either.
|
||||
*
|
||||
* @param string $string Input string
|
||||
* @return string Filtered string
|
||||
*/
|
||||
function notags($string) {
|
||||
return str_replace(["<", ">"], ['[', ']'], $string);
|
||||
|
||||
// High-bit filter no longer used
|
||||
// return str_replace(array("<",">","\xBA","\xBC","\xBE"), array('[',']','','',''), $string);
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* use this on "body" or "content" input where angle chars shouldn't be removed,
|
||||
* and allow them to be safely displayed.
|
||||
* @param string $string
|
||||
* @return string
|
||||
*/
|
||||
function escape_tags($string) {
|
||||
return htmlspecialchars($string, ENT_COMPAT, 'UTF-8', false);
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* generate a string that's random, but usually pronounceable.
|
||||
* used to generate initial passwords
|
||||
* @param int $len
|
||||
* @return string
|
||||
*/
|
||||
function autoname($len) {
|
||||
|
||||
if ($len <= 0) {
|
||||
return '';
|
||||
}
|
||||
|
||||
$vowels = ['a','a','ai','au','e','e','e','ee','ea','i','ie','o','ou','u'];
|
||||
if (mt_rand(0, 5) == 4) {
|
||||
$vowels[] = 'y';
|
||||
}
|
||||
|
||||
$cons = [
|
||||
'b','bl','br',
|
||||
'c','ch','cl','cr',
|
||||
'd','dr',
|
||||
'f','fl','fr',
|
||||
'g','gh','gl','gr',
|
||||
'h',
|
||||
'j',
|
||||
'k','kh','kl','kr',
|
||||
'l',
|
||||
'm',
|
||||
'n',
|
||||
'p','ph','pl','pr',
|
||||
'qu',
|
||||
'r','rh',
|
||||
's','sc','sh','sm','sp','st',
|
||||
't','th','tr',
|
||||
'v',
|
||||
'w','wh',
|
||||
'x',
|
||||
'z','zh'
|
||||
];
|
||||
|
||||
$midcons = ['ck','ct','gn','ld','lf','lm','lt','mb','mm', 'mn','mp',
|
||||
'nd','ng','nk','nt','rn','rp','rt'];
|
||||
|
||||
$noend = ['bl', 'br', 'cl','cr','dr','fl','fr','gl','gr',
|
||||
'kh', 'kl','kr','mn','pl','pr','rh','tr','qu','wh','q'];
|
||||
|
||||
$start = mt_rand(0,2);
|
||||
if ($start == 0) {
|
||||
$table = $vowels;
|
||||
} else {
|
||||
$table = $cons;
|
||||
}
|
||||
|
||||
$word = '';
|
||||
|
||||
for ($x = 0; $x < $len; $x ++) {
|
||||
$r = mt_rand(0,count($table) - 1);
|
||||
$word .= $table[$r];
|
||||
|
||||
if ($table == $vowels) {
|
||||
$table = array_merge($cons,$midcons);
|
||||
} else {
|
||||
$table = $vowels;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
$word = substr($word,0,$len);
|
||||
|
||||
foreach ($noend as $noe) {
|
||||
$noelen = strlen($noe);
|
||||
if ((strlen($word) > $noelen) && (substr($word, -$noelen) == $noe)) {
|
||||
$word = autoname($len);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
return $word;
|
||||
}
|
||||
|
||||
/**
|
||||
* Turn user/group ACLs stored as angle bracketed text into arrays
|
||||
*
|
||||
|
|
@ -255,78 +122,6 @@ function activity_match($haystack,$needle) {
|
|||
return (($haystack === $needle) || ((basename($needle) === $haystack) && strstr($needle, NAMESPACE_ACTIVITY_SCHEMA)));
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* @brief Pull out all #hashtags and @person tags from $string.
|
||||
*
|
||||
* We also get @person@domain.com - which would make
|
||||
* the regex quite complicated as tags can also
|
||||
* end a sentence. So we'll run through our results
|
||||
* and strip the period from any tags which end with one.
|
||||
* Returns array of tags found, or empty array.
|
||||
*
|
||||
* @param string $string Post content
|
||||
* @return array List of tag and person names
|
||||
*/
|
||||
function get_tags($string) {
|
||||
$ret = [];
|
||||
|
||||
// Convert hashtag links to hashtags
|
||||
$string = preg_replace('/#\[url\=([^\[\]]*)\](.*?)\[\/url\]/ism', '#$2', $string);
|
||||
|
||||
// ignore anything in a code block
|
||||
$string = preg_replace('/\[code\](.*?)\[\/code\]/sm', '', $string);
|
||||
|
||||
// Force line feeds at bbtags
|
||||
$string = str_replace(['[', ']'], ["\n[", "]\n"], $string);
|
||||
|
||||
// ignore anything in a bbtag
|
||||
$string = preg_replace('/\[(.*?)\]/sm', '', $string);
|
||||
|
||||
// Match full names against @tags including the space between first and last
|
||||
// We will look these up afterward to see if they are full names or not recognisable.
|
||||
|
||||
if (preg_match_all('/(@[^ \x0D\x0A,:?]+ [^ \x0D\x0A@,:?]+)([ \x0D\x0A@,:?]|$)/', $string, $matches)) {
|
||||
foreach ($matches[1] as $match) {
|
||||
if (strstr($match, ']')) {
|
||||
// we might be inside a bbcode color tag - leave it alone
|
||||
continue;
|
||||
}
|
||||
if (substr($match, -1, 1) === '.') {
|
||||
$ret[] = substr($match, 0, -1);
|
||||
} else {
|
||||
$ret[] = $match;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Otherwise pull out single word tags. These can be @nickname, @first_last
|
||||
// and #hash tags.
|
||||
|
||||
if (preg_match_all('/([!#@][^\^ \x0D\x0A,;:?]+)([ \x0D\x0A,;:?]|$)/', $string, $matches)) {
|
||||
foreach ($matches[1] as $match) {
|
||||
if (strstr($match, ']')) {
|
||||
// we might be inside a bbcode color tag - leave it alone
|
||||
continue;
|
||||
}
|
||||
if (substr($match, -1, 1) === '.') {
|
||||
$match = substr($match,0,-1);
|
||||
}
|
||||
// ignore strictly numeric tags like #1
|
||||
if ((strpos($match, '#') === 0) && ctype_digit(substr($match, 1))) {
|
||||
continue;
|
||||
}
|
||||
// try not to catch url fragments
|
||||
if (strpos($string, $match) && preg_match('/[a-zA-z0-9\/]/', substr($string, strpos($string, $match) - 1, 1))) {
|
||||
continue;
|
||||
}
|
||||
$ret[] = $match;
|
||||
}
|
||||
}
|
||||
return $ret;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* quick and dirty quoted_printable encoding
|
||||
*
|
||||
|
|
@ -337,45 +132,6 @@ function qp($s) {
|
|||
return str_replace("%", "=", rawurlencode($s));
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Check for a valid email string
|
||||
*
|
||||
* @param string $email_address
|
||||
* @return boolean
|
||||
*/
|
||||
function valid_email($email_address)
|
||||
{
|
||||
return preg_match('/^[_a-zA-Z0-9\-\+]+(\.[_a-zA-Z0-9\-\+]+)*@[a-zA-Z0-9-]+(\.[a-zA-Z0-9-]+)+$/', $email_address);
|
||||
}
|
||||
|
||||
/**
|
||||
* Normalize url
|
||||
*
|
||||
* @param string $url
|
||||
* @return string
|
||||
*/
|
||||
function normalise_link($url) {
|
||||
$ret = str_replace(['https:', '//www.'], ['http:', '//'], $url);
|
||||
return rtrim($ret,'/');
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Compare two URLs to see if they are the same, but ignore
|
||||
* slight but hopefully insignificant differences such as if one
|
||||
* is https and the other isn't, or if one is www.something and
|
||||
* the other isn't - and also ignore case differences.
|
||||
*
|
||||
* @param string $a first url
|
||||
* @param string $b second url
|
||||
* @return boolean True if the URLs match, otherwise False
|
||||
*
|
||||
*/
|
||||
function link_compare($a, $b) {
|
||||
return (strcasecmp(normalise_link($a), normalise_link($b)) === 0);
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* @brief Find any non-embedded images in private items and add redir links to them
|
||||
*
|
||||
|
|
@ -507,53 +263,6 @@ function return_bytes($size_str) {
|
|||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* @param string $s
|
||||
* @param boolean $strip_padding
|
||||
* @return string
|
||||
*/
|
||||
function base64url_encode($s, $strip_padding = false) {
|
||||
|
||||
$s = strtr(base64_encode($s), '+/', '-_');
|
||||
|
||||
if ($strip_padding) {
|
||||
$s = str_replace('=','',$s);
|
||||
}
|
||||
|
||||
return $s;
|
||||
}
|
||||
|
||||
/**
|
||||
* @param string $s
|
||||
* @return string
|
||||
*/
|
||||
function base64url_decode($s) {
|
||||
|
||||
if (is_array($s)) {
|
||||
Logger::log('base64url_decode: illegal input: ' . print_r(debug_backtrace(), true));
|
||||
return $s;
|
||||
}
|
||||
|
||||
/*
|
||||
* // Placeholder for new rev of salmon which strips base64 padding.
|
||||
* // PHP base64_decode handles the un-padded input without requiring this step
|
||||
* // Uncomment if you find you need it.
|
||||
*
|
||||
* $l = strlen($s);
|
||||
* if (!strpos($s,'=')) {
|
||||
* $m = $l % 4;
|
||||
* if ($m == 2)
|
||||
* $s .= '==';
|
||||
* if ($m == 3)
|
||||
* $s .= '=';
|
||||
* }
|
||||
*
|
||||
*/
|
||||
|
||||
return base64_decode(strtr($s,'-_','+/'));
|
||||
}
|
||||
|
||||
|
||||
function bb_translate_video($s) {
|
||||
|
||||
$matches = null;
|
||||
|
|
@ -570,11 +279,6 @@ function bb_translate_video($s) {
|
|||
return $s;
|
||||
}
|
||||
|
||||
function normalise_openid($s) {
|
||||
return trim(str_replace(['http://', 'https://'], ['', ''], $s), '/');
|
||||
}
|
||||
|
||||
|
||||
function undo_post_tagging($s) {
|
||||
$matches = null;
|
||||
$cnt = preg_match_all('/([!#@])\[url=(.*?)\](.*?)\[\/url\]/ism', $s, $matches, PREG_SET_ORDER);
|
||||
|
|
@ -590,10 +294,6 @@ function undo_post_tagging($s) {
|
|||
return $s;
|
||||
}
|
||||
|
||||
function protect_sprintf($s) {
|
||||
return str_replace('%', '%%', $s);
|
||||
}
|
||||
|
||||
/// @TODO Rewrite this
|
||||
function is_a_date_arg($s) {
|
||||
$i = intval($s);
|
||||
|
|
@ -612,59 +312,3 @@ function is_a_date_arg($s) {
|
|||
|
||||
return false;
|
||||
}
|
||||
|
||||
/**
|
||||
* remove intentation from a text
|
||||
*/
|
||||
function deindent($text, $chr = "[\t ]", $count = NULL) {
|
||||
$lines = explode("\n", $text);
|
||||
|
||||
if (is_null($count)) {
|
||||
$m = [];
|
||||
$k = 0;
|
||||
while ($k < count($lines) && strlen($lines[$k]) == 0) {
|
||||
$k++;
|
||||
}
|
||||
preg_match("|^" . $chr . "*|", $lines[$k], $m);
|
||||
$count = strlen($m[0]);
|
||||
}
|
||||
|
||||
for ($k = 0; $k < count($lines); $k++) {
|
||||
$lines[$k] = preg_replace("|^" . $chr . "{" . $count . "}|", "", $lines[$k]);
|
||||
}
|
||||
|
||||
return implode("\n", $lines);
|
||||
}
|
||||
|
||||
function formatBytes($bytes, $precision = 2) {
|
||||
$units = ['B', 'KB', 'MB', 'GB', 'TB'];
|
||||
|
||||
$bytes = max($bytes, 0);
|
||||
$pow = floor(($bytes ? log($bytes) : 0) / log(1024));
|
||||
$pow = min($pow, count($units) - 1);
|
||||
|
||||
$bytes /= pow(1024, $pow);
|
||||
|
||||
return round($bytes, $precision) . ' ' . $units[$pow];
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief translate and format the networkname of a contact
|
||||
*
|
||||
* @param string $network
|
||||
* Networkname of the contact (e.g. dfrn, rss and so on)
|
||||
* @param sting $url
|
||||
* The contact url
|
||||
* @return string
|
||||
*/
|
||||
function format_network_name($network, $url = 0) {
|
||||
if ($network != "") {
|
||||
if ($url != "") {
|
||||
$network_name = '<a href="'.$url.'">'.ContactSelector::networkToName($network, $url)."</a>";
|
||||
} else {
|
||||
$network_name = ContactSelector::networkToName($network);
|
||||
}
|
||||
|
||||
return $network_name;
|
||||
}
|
||||
}
|
||||
|
|
|
|||
405
src/Util/Strings.php
Normal file
405
src/Util/Strings.php
Normal file
|
|
@ -0,0 +1,405 @@
|
|||
<?php
|
||||
/**
|
||||
* @file src/Util/Strings.php
|
||||
*/
|
||||
|
||||
namespace Friendica\Util;
|
||||
|
||||
/**
|
||||
* @brief This class handles string functions
|
||||
*/
|
||||
class Strings
|
||||
{
|
||||
/**
|
||||
* @brief Generates a pseudo-random string of hexadecimal characters
|
||||
*
|
||||
* @param int $size
|
||||
* @return string
|
||||
*/
|
||||
public static function getRandomHex($size = 64) // random_string()
|
||||
{
|
||||
$byte_size = ceil($size / 2);
|
||||
|
||||
$bytes = random_bytes($byte_size);
|
||||
|
||||
$return = substr(bin2hex($bytes), 0, $size);
|
||||
|
||||
return $return;
|
||||
}
|
||||
|
||||
/**
|
||||
* This is our primary input filter.
|
||||
*
|
||||
* The high bit hack only involved some old IE browser, forget which (IE5/Mac?)
|
||||
* that had an XSS attack vector due to stripping the high-bit on an 8-bit character
|
||||
* after cleansing, and angle chars with the high bit set could get through as markup.
|
||||
*
|
||||
* This is now disabled because it was interfering with some legitimate unicode sequences
|
||||
* and hopefully there aren't a lot of those browsers left.
|
||||
*
|
||||
* Use this on any text input where angle chars are not valid or permitted
|
||||
* They will be replaced with safer brackets. This may be filtered further
|
||||
* if these are not allowed either.
|
||||
*
|
||||
* @param string $string Input string
|
||||
* @return string Filtered string
|
||||
*/
|
||||
public static function removeTags($string) // notags()
|
||||
{
|
||||
return str_replace(["<", ">"], ['[', ']'], $string);
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Use this on "body" or "content" input where angle chars shouldn't be removed,
|
||||
* and allow them to be safely displayed.
|
||||
* @param string $string
|
||||
*
|
||||
* @return string
|
||||
*/
|
||||
public static function escapeTags($string) // escape_tags()
|
||||
{
|
||||
return htmlspecialchars($string, ENT_COMPAT, 'UTF-8', false);
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Generate a string that's random, but usually pronounceable. Used to generate initial passwords
|
||||
*
|
||||
* @param int $len length
|
||||
*
|
||||
* @return string
|
||||
*/
|
||||
public static function getRandomName($len) // autoname()
|
||||
{
|
||||
if ($len <= 0) {
|
||||
return '';
|
||||
}
|
||||
|
||||
$vowels = ['a', 'a', 'ai', 'au', 'e', 'e', 'e', 'ee', 'ea', 'i', 'ie', 'o', 'ou', 'u'];
|
||||
|
||||
if (mt_rand(0, 5) == 4) {
|
||||
$vowels[] = 'y';
|
||||
}
|
||||
|
||||
$cons = [
|
||||
'b', 'bl', 'br',
|
||||
'c', 'ch', 'cl', 'cr',
|
||||
'd', 'dr',
|
||||
'f', 'fl', 'fr',
|
||||
'g', 'gh', 'gl', 'gr',
|
||||
'h',
|
||||
'j',
|
||||
'k', 'kh', 'kl', 'kr',
|
||||
'l',
|
||||
'm',
|
||||
'n',
|
||||
'p', 'ph', 'pl', 'pr',
|
||||
'qu',
|
||||
'r', 'rh',
|
||||
's' ,'sc', 'sh', 'sm', 'sp', 'st',
|
||||
't', 'th', 'tr',
|
||||
'v',
|
||||
'w', 'wh',
|
||||
'x',
|
||||
'z', 'zh'
|
||||
];
|
||||
|
||||
$midcons = ['ck', 'ct', 'gn', 'ld', 'lf', 'lm', 'lt', 'mb', 'mm', 'mn', 'mp',
|
||||
'nd', 'ng', 'nk', 'nt', 'rn', 'rp', 'rt'];
|
||||
|
||||
$noend = ['bl', 'br', 'cl', 'cr', 'dr', 'fl', 'fr', 'gl', 'gr',
|
||||
'kh', 'kl', 'kr', 'mn', 'pl', 'pr', 'rh', 'tr', 'qu', 'wh', 'q'];
|
||||
|
||||
$start = mt_rand(0, 2);
|
||||
if ($start == 0) {
|
||||
$table = $vowels;
|
||||
} else {
|
||||
$table = $cons;
|
||||
}
|
||||
|
||||
$word = '';
|
||||
|
||||
for ($x = 0; $x < $len; $x ++) {
|
||||
$r = mt_rand(0, count($table) - 1);
|
||||
$word .= $table[$r];
|
||||
|
||||
if ($table == $vowels) {
|
||||
$table = array_merge($cons, $midcons);
|
||||
} else {
|
||||
$table = $vowels;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
$word = substr($word, 0, $len);
|
||||
|
||||
foreach ($noend as $noe) {
|
||||
$noelen = strlen($noe);
|
||||
if ((strlen($word) > $noelen) && (substr($word, -$noelen) == $noe)) {
|
||||
$word = self::getRandomName($len);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
return $word;
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief translate and format the networkname of a contact
|
||||
*
|
||||
* @param string $network Networkname of the contact (e.g. dfrn, rss and so on)
|
||||
* @param string $url The contact url
|
||||
*
|
||||
* @return string Formatted network name
|
||||
*/
|
||||
public static function formatNetworkName($network, $url = 0) // format_network_name()
|
||||
{
|
||||
if ($network != "") {
|
||||
if ($url != "") {
|
||||
$network_name = '<a href="'.$url.'">'.ContactSelector::networkToName($network, $url)."</a>";
|
||||
} else {
|
||||
$network_name = ContactSelector::networkToName($network);
|
||||
}
|
||||
|
||||
return $network_name;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Remove intentation from a text
|
||||
*
|
||||
* @param string $text String to be transformed.
|
||||
* @param string $chr Optional. Indentation tag. Default tab (\t).
|
||||
* @param int $count Optional. Default null.
|
||||
*
|
||||
* @return string Transformed string.
|
||||
*/
|
||||
public static function deindent($text, $chr = "[\t ]", $count = NULL)
|
||||
{
|
||||
$lines = explode("\n", $text);
|
||||
|
||||
if (is_null($count)) {
|
||||
$m = [];
|
||||
$k = 0;
|
||||
while ($k < count($lines) && strlen($lines[$k]) == 0) {
|
||||
$k++;
|
||||
}
|
||||
preg_match("|^" . $chr . "*|", $lines[$k], $m);
|
||||
$count = strlen($m[0]);
|
||||
}
|
||||
|
||||
for ($k = 0; $k < count($lines); $k++) {
|
||||
$lines[$k] = preg_replace("|^" . $chr . "{" . $count . "}|", "", $lines[$k]);
|
||||
}
|
||||
|
||||
return implode("\n", $lines);
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Get byte size returned in a Data Measurement (KB, MB, GB)
|
||||
*
|
||||
* @param int $bytes The number of bytes to be measured
|
||||
* @param int $precision Optional. Default 2.
|
||||
*
|
||||
* @return string Size with measured units.
|
||||
*/
|
||||
public static function formatBytes($bytes, $precision = 2)
|
||||
{
|
||||
$units = ['B', 'KB', 'MB', 'GB', 'TB'];
|
||||
$bytes = max($bytes, 0);
|
||||
$pow = floor(($bytes ? log($bytes) : 0) / log(1024));
|
||||
$pow = min($pow, count($units) - 1);
|
||||
$bytes /= pow(1024, $pow);
|
||||
|
||||
return round($bytes, $precision) . ' ' . $units[$pow];
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Protect percent characters in sprintf calls
|
||||
*
|
||||
* @param string $s String to transform.
|
||||
*
|
||||
* @return string Transformed string.
|
||||
*/
|
||||
public static function protectSprintf($s) // protect_sprintf()
|
||||
{
|
||||
return str_replace('%', '%%', $s);
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Base64 Encode URL and translate +/ to -_ Optionally strip padding.
|
||||
*
|
||||
* @param string $s URL to encode
|
||||
* @param boolean $strip_padding Optional. Default false
|
||||
*
|
||||
* @return string Encoded URL
|
||||
*/
|
||||
public static function base64UrlEncode($s, $strip_padding = false) //base64url_encode()
|
||||
{
|
||||
$s = strtr(base64_encode($s), '+/', '-_');
|
||||
|
||||
if ($strip_padding) {
|
||||
$s = str_replace('=', '', $s);
|
||||
}
|
||||
|
||||
return $s;
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Decode Base64 Encoded URL and translate -_ to +/
|
||||
* @param string $s URL to decode
|
||||
*
|
||||
* @return string Decoded URL
|
||||
*/
|
||||
public static function base64url_decode($s) // base64url_decode()
|
||||
{
|
||||
if (is_array($s)) {
|
||||
Logger::log('base64url_decode: illegal input: ' . print_r(debug_backtrace(), true));
|
||||
return $s;
|
||||
}
|
||||
|
||||
/*
|
||||
* // Placeholder for new rev of salmon which strips base64 padding.
|
||||
* // PHP base64_decode handles the un-padded input without requiring this step
|
||||
* // Uncomment if you find you need it.
|
||||
*
|
||||
* $l = strlen($s);
|
||||
* if (!strpos($s,'=')) {
|
||||
* $m = $l % 4;
|
||||
* if ($m == 2)
|
||||
* $s .= '==';
|
||||
* if ($m == 3)
|
||||
* $s .= '=';
|
||||
* }
|
||||
*
|
||||
*/
|
||||
|
||||
return base64_decode(strtr($s, '-_', '+/'));
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Pull out all #hashtags and @person tags from $string.
|
||||
*
|
||||
* We also get @person@domain.com - which would make
|
||||
* the regex quite complicated as tags can also
|
||||
* end a sentence. So we'll run through our results
|
||||
* and strip the period from any tags which end with one.
|
||||
* Returns array of tags found, or empty array.
|
||||
*
|
||||
* @param string $string Post content
|
||||
*
|
||||
* @return array List of tag and person names
|
||||
*/
|
||||
public static function getTags($string) // get_tags()
|
||||
{
|
||||
$ret = [];
|
||||
|
||||
// Convert hashtag links to hashtags
|
||||
$string = preg_replace('/#\[url\=([^\[\]]*)\](.*?)\[\/url\]/ism', '#$2', $string);
|
||||
|
||||
// ignore anything in a code block
|
||||
$string = preg_replace('/\[code\](.*?)\[\/code\]/sm', '', $string);
|
||||
|
||||
// Force line feeds at bbtags
|
||||
$string = str_replace(['[', ']'], ["\n[", "]\n"], $string);
|
||||
|
||||
// ignore anything in a bbtag
|
||||
$string = preg_replace('/\[(.*?)\]/sm', '', $string);
|
||||
|
||||
// Match full names against @tags including the space between first and last
|
||||
// We will look these up afterward to see if they are full names or not recognisable.
|
||||
|
||||
if (preg_match_all('/(@[^ \x0D\x0A,:?]+ [^ \x0D\x0A@,:?]+)([ \x0D\x0A@,:?]|$)/', $string, $matches)) {
|
||||
foreach ($matches[1] as $match) {
|
||||
if (strstr($match, ']')) {
|
||||
// we might be inside a bbcode color tag - leave it alone
|
||||
continue;
|
||||
}
|
||||
|
||||
if (substr($match, -1, 1) === '.') {
|
||||
$ret[] = substr($match, 0, -1);
|
||||
} else {
|
||||
$ret[] = $match;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Otherwise pull out single word tags. These can be @nickname, @first_last
|
||||
// and #hash tags.
|
||||
|
||||
if (preg_match_all('/([!#@][^\^ \x0D\x0A,;:?]+)([ \x0D\x0A,;:?]|$)/', $string, $matches)) {
|
||||
foreach ($matches[1] as $match) {
|
||||
if (strstr($match, ']')) {
|
||||
// we might be inside a bbcode color tag - leave it alone
|
||||
continue;
|
||||
}
|
||||
if (substr($match, -1, 1) === '.') {
|
||||
$match = substr($match,0,-1);
|
||||
}
|
||||
// ignore strictly numeric tags like #1
|
||||
if ((strpos($match, '#') === 0) && ctype_digit(substr($match, 1))) {
|
||||
continue;
|
||||
}
|
||||
// try not to catch url fragments
|
||||
if (strpos($string, $match) && preg_match('/[a-zA-z0-9\/]/', substr($string, strpos($string, $match) - 1, 1))) {
|
||||
continue;
|
||||
}
|
||||
$ret[] = $match;
|
||||
}
|
||||
}
|
||||
|
||||
return $ret;
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Check for a valid email string
|
||||
*
|
||||
* @param string $email_address Email address to be evaluated.
|
||||
*
|
||||
* @return boolean Value indicating whether or not the string is a valid email address.
|
||||
*/
|
||||
public static function isValidEmail($email_address) // valid_email()
|
||||
{
|
||||
return preg_match('/^[_a-zA-Z0-9\-\+]+(\.[_a-zA-Z0-9\-\+]+)*@[a-zA-Z0-9-]+(\.[a-zA-Z0-9-]+)+$/', $email_address);
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Normalize url
|
||||
*
|
||||
* @param string $url URL to be normalized.
|
||||
*
|
||||
* @return string Normalized URL.
|
||||
*/
|
||||
public static function normaliseLink($url) // normalise_link()
|
||||
{
|
||||
$ret = str_replace(['https:', '//www.'], ['http:', '//'], $url);
|
||||
return rtrim($ret, '/');
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Normalize OpenID identity
|
||||
*
|
||||
* @param string $s OpenID Identity
|
||||
*
|
||||
* @return string normalized OpenId Identity
|
||||
*/
|
||||
function normaliseOpenID($s) // normalize_openid()
|
||||
{
|
||||
return trim(str_replace(['http://', 'https://'], ['', ''], $s), '/');
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Compare two URLs to see if they are the same, but ignore
|
||||
* slight but hopefully insignificant differences such as if one
|
||||
* is https and the other isn't, or if one is www.something and
|
||||
* the other isn't - and also ignore case differences.
|
||||
*
|
||||
* @param string $a first url
|
||||
* @param string $b second url
|
||||
* @return boolean True if the URLs match, otherwise False
|
||||
*
|
||||
*/
|
||||
public static function compareLink($a, $b) // link_compare()
|
||||
{
|
||||
return (strcasecmp(normalise_link($a), normalise_link($b)) === 0);
|
||||
}
|
||||
}
|
||||
Loading…
Reference in a new issue