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roundcubemail/program/include/rcube_shared.inc

432 lines
9.3 KiB
PHP

<?php
/*
+-----------------------------------------------------------------------+
| program/include/rcube_shared.inc |
| |
| This file is part of the Roundcube PHP suite |
| Copyright (C) 2005-2012, The Roundcube Dev Team |
| |
| Licensed under the GNU General Public License version 3 or |
| any later version with exceptions for skins & plugins. |
| See the README file for a full license statement. |
| |
| CONTENTS: |
| Shared functions used by Roundcube Framework |
| |
+-----------------------------------------------------------------------+
| Author: Thomas Bruederli <roundcube@gmail.com> |
+-----------------------------------------------------------------------+
$Id$
*/
/**
* Roundcube shared functions
*
* @package Core
*/
/**
* Similar function as in_array() but case-insensitive
*
* @param string $needle Needle value
* @param array $heystack Array to search in
*
* @return boolean True if found, False if not
*/
function in_array_nocase($needle, $haystack)
{
$needle = mb_strtolower($needle);
foreach ($haystack as $value) {
if ($needle === mb_strtolower($value)) {
return true;
}
}
return false;
}
/**
* Find out if the string content means true or false
*
* @param string $str Input value
*
* @return boolean Boolean value
*/
function get_boolean($str)
{
$str = strtolower($str);
return !in_array($str, array('false', '0', 'no', 'off', 'nein', ''), true);
}
/**
* Parse a human readable string for a number of bytes.
*
* @param string $str Input string
*
* @return float Number of bytes
*/
function parse_bytes($str)
{
if (is_numeric($str)) {
return floatval($str);
}
if (preg_match('/([0-9\.]+)\s*([a-z]*)/i', $str, $regs)) {
$bytes = floatval($regs[1]);
switch (strtolower($regs[2])) {
case 'g':
case 'gb':
$bytes *= 1073741824;
break;
case 'm':
case 'mb':
$bytes *= 1048576;
break;
case 'k':
case 'kb':
$bytes *= 1024;
break;
}
}
return floatval($bytes);
}
/**
* Make sure the string ends with a slash
*/
function slashify($str)
{
return unslashify($str).'/';
}
/**
* Remove slash at the end of the string
*/
function unslashify($str)
{
return preg_replace('/\/$/', '', $str);
}
/**
* Delete all files within a folder
*
* @param string Path to directory
*
* @return boolean True on success, False if directory was not found
*/
function clear_directory($dir_path)
{
$dir = @opendir($dir_path);
if (!$dir) {
return false;
}
while ($file = readdir($dir)) {
if (strlen($file) > 2) {
unlink("$dir_path/$file");
}
}
closedir($dir);
return true;
}
/**
* Create a unix timestamp with a specified offset from now.
*
* @param string $offset_str String representation of the offset (e.g. 20min, 5h, 2days)
* @param int $factor Factor to multiply with the offset
*
* @return int Unix timestamp
*/
function get_offset_time($offset_str, $factor=1)
{
if (preg_match('/^([0-9]+)\s*([smhdw])/i', $offset_str, $regs)) {
$amount = (int)$regs[1];
$unit = strtolower($regs[2]);
}
else {
$amount = (int)$offset_str;
$unit = 's';
}
$ts = mktime();
switch ($unit) {
case 'w':
$amount *= 7;
case 'd':
$amount *= 24;
case 'h':
$amount *= 60;
case 'm':
$amount *= 60;
case 's':
$ts += $amount * $factor;
}
return $ts;
}
/**
* Truncate string if it is longer than the allowed length.
* Replace the middle or the ending part of a string with a placeholder.
*
* @param string $str Input string
* @param int $maxlength Max. length
* @param string $placeholder Replace removed chars with this
* @param bool $ending Set to True if string should be truncated from the end
*
* @return string Abbreviated string
*/
function abbreviate_string($str, $maxlength, $placeholder='...', $ending=false)
{
$length = mb_strlen($str);
if ($length > $maxlength) {
if ($ending) {
return mb_substr($str, 0, $maxlength) . $placeholder;
}
$placeholder_length = mb_strlen($placeholder);
$first_part_length = floor(($maxlength - $placeholder_length)/2);
$second_starting_location = $length - $maxlength + $first_part_length + $placeholder_length;
$str = mb_substr($str, 0, $first_part_length) . $placeholder . mb_substr($str, $second_starting_location);
}
return $str;
}
/**
* Get all keys from array (recursive).
*
* @param array $array Input array
*
* @return array List of array keys
*/
function array_keys_recursive($array)
{
$keys = array();
if (!empty($array)) {
foreach ($array as $key => $child) {
$keys[] = $key;
foreach (array_keys_recursive($child) as $val) {
$keys[] = $val;
}
}
}
return $keys;
}
/**
* Remove all non-ascii and non-word chars except ., -, _
*/
function asciiwords($str, $css_id = false, $replace_with = '')
{
$allowed = 'a-z0-9\_\-' . (!$css_id ? '\.' : '');
return preg_replace("/[^$allowed]/i", $replace_with, $str);
}
/**
* Remove single and double quotes from given string
*
* @param string Input value
*
* @return string Dequoted string
*/
function strip_quotes($str)
{
return str_replace(array("'", '"'), '', $str);
}
/**
* Remove new lines characters from given string
*
* @param string $str Input value
*
* @return string Stripped string
*/
function strip_newlines($str)
{
return preg_replace('/[\r\n]/', '', $str);
}
/**
* Compose a valid representation of name and e-mail address
*
* @param string $email E-mail address
* @param string $name Person name
*
* @return string Formatted string
*/
function format_email_recipient($email, $name = '')
{
$email = trim($email);
if ($name && $name != $email) {
// Special chars as defined by RFC 822 need to in quoted string (or escaped).
if (preg_match('/[\(\)\<\>\\\.\[\]@,;:"]/', $name)) {
$name = '"'.addcslashes($name, '"').'"';
}
return "$name <$email>";
}
return $email;
}
/**
* mbstring replacement functions
*/
if (!extension_loaded('mbstring'))
{
function mb_strlen($str)
{
return strlen($str);
}
function mb_strtolower($str)
{
return strtolower($str);
}
function mb_strtoupper($str)
{
return strtoupper($str);
}
function mb_substr($str, $start, $len=null)
{
return substr($str, $start, $len);
}
function mb_strpos($haystack, $needle, $offset=0)
{
return strpos($haystack, $needle, $offset);
}
function mb_strrpos($haystack, $needle, $offset=0)
{
return strrpos($haystack, $needle, $offset);
}
}
/**
* intl replacement functions
*/
if (!function_exists('idn_to_utf8'))
{
function idn_to_utf8($domain, $flags=null)
{
static $idn, $loaded;
if (!$loaded) {
$idn = new Net_IDNA2();
$loaded = true;
}
if ($idn && $domain && preg_match('/(^|\.)xn--/i', $domain)) {
try {
$domain = $idn->decode($domain);
}
catch (Exception $e) {
}
}
return $domain;
}
}
if (!function_exists('idn_to_ascii'))
{
function idn_to_ascii($domain, $flags=null)
{
static $idn, $loaded;
if (!$loaded) {
$idn = new Net_IDNA2();
$loaded = true;
}
if ($idn && $domain && preg_match('/[^\x20-\x7E]/', $domain)) {
try {
$domain = $idn->encode($domain);
}
catch (Exception $e) {
}
}
return $domain;
}
}
/**
* Use PHP5 autoload for dynamic class loading
*
* @todo Make Zend, PEAR etc play with this
* @todo Make our classes conform to a more straight forward CS.
*/
function rcube_autoload($classname)
{
$filename = preg_replace(
array(
'/MDB2_(.+)/',
'/Mail_(.+)/',
'/Net_(.+)/',
'/Auth_(.+)/',
'/^html_.+/',
'/^utf8$/',
),
array(
'MDB2/\\1',
'Mail/\\1',
'Net/\\1',
'Auth/\\1',
'html',
'utf8.class',
),
$classname
);
if ($fp = @fopen("$filename.php", 'r', true)) {
fclose($fp);
include_once "$filename.php";
return true;
}
return false;
}
/**
* Local callback function for PEAR errors
*/
function rcube_pear_error($err)
{
error_log(sprintf("%s (%s): %s",
$err->getMessage(),
$err->getCode(),
$err->getUserinfo()), 0);
}