diff options
Diffstat (limited to 'system/helpers/url_helper.php')
| -rw-r--r-- | system/helpers/url_helper.php | 487 |
1 files changed, 487 insertions, 0 deletions
diff --git a/system/helpers/url_helper.php b/system/helpers/url_helper.php new file mode 100644 index 000000000..d2d2a5985 --- /dev/null +++ b/system/helpers/url_helper.php @@ -0,0 +1,487 @@ +<?php if (!defined('BASEPATH')) exit('No direct script access allowed'); +/** + * Code Igniter + * + * An open source application development framework for PHP 4.3.2 or newer + * + * @package CodeIgniter + * @author Rick Ellis + * @copyright Copyright (c) 2006, pMachine, Inc. + * @license http://www.codeignitor.com/user_guide/license.html + * @link http://www.codeigniter.com + * @since Version 1.0 + * @filesource + */ + +// ------------------------------------------------------------------------ + +/** + * Code Igniter URL Helpers + * + * @package CodeIgniter + * @subpackage Helpers + * @category Helpers + * @author Rick Ellis + * @link http://www.codeigniter.com/user_guide/helpers/url_helper.html + */ + +// ------------------------------------------------------------------------ + +/** + * Site URL + * + * Create a local URL based on your basepath. Segments can be passed via the + * first parameter either as a string or an array. + * + * @access public + * @param string + * @return string + */ +function site_url($uri = '') +{ + $obj =& get_instance(); + return $obj->config->site_url($uri); +} + +// ------------------------------------------------------------------------ + +/** + * Base URL + * + * Returns the "base_url" item from your config file + * + * @access public + * @return string + */ +function base_url() +{ + $obj =& get_instance(); + return $obj->config->item('base_url', 1); +} + +// ------------------------------------------------------------------------ + +/** + * Index page + * + * Returns the "index_page" from your config file + * + * @access public + * @return string + */ +function index_page() +{ + $obj =& get_instance(); + return $obj->config->item('index_page'); +} + +// ------------------------------------------------------------------------ + +/** + * Anchor Link + * + * Creates an anchor based on the local URL. + * + * @access public + * @param string the URL + * @param string the link title + * @param mixed any attributes + * @return string + */ +function anchor($uri = '', $title = '', $attributes = '') +{ + $site_url = site_url($uri); + + if ($title == '') + { + $title = $site_url; + } + + if ($attributes == '') + { + $attributes = ' title="'.$title.'"'; + } + else + { + if (is_array($attributes)) + { + $attributes = parse_url_attributes($attributes); + } + } + + return '<a href="'.$site_url.'"'.$attributes.'>'.$title.'</a>'; +} + +// ------------------------------------------------------------------------ + +/** + * Anchor Link - Pop-up version + * + * Creates an anchor based on the local URL. The link + * opens a new window based on the attributes specified. + * + * @access public + * @param string the URL + * @param string the link title + * @param mixed any attributes + * @return string + */ +function anchor_popup($uri = '', $title = '', $attributes = FALSE) +{ + $site_url = site_url($uri); + + if ($title == '') + { + $title = $site_url; + } + + if ($attributes === FALSE) + { + return "<a href='javascript:void(0);' onclick=\"window.open('".$site_url."', '_blank');\">".$title."</a>"; + } + + if ( ! is_array($attributes)) + { + $attributes = array(); + } + + foreach (array('width' => '800', 'height' => '600', 'scrollbars' => 'yes', 'status' => 'yes', 'resizable' => 'yes', 'screenx' => '0', 'screeny' => '0', ) as $key => $val) + { + $atts[$key] = ( ! isset($attributes[$key])) ? $val : $attributes[$key]; + } + + return "<a href='javascript:void(0);' onclick=\"window.open('".$site_url."', '_blank', '".parse_url_attributes($atts, TRUE)."');\">".$title."</a>"; +} + +// ------------------------------------------------------------------------ + +/** + * Mailto Link + * + * @access public + * @param string the email address + * @param string the link title + * @param mixed any attributes + * @return string + */ +function mailto($email, $title = '', $attributes = '') +{ + if ($title == "") + { + $title = $email; + } + + if (is_array($attributes)) + { + $attributes = parse_url_attributes($attributes); + } + + return '<a href="mailto:'.$email.'"'.$attributes.'>'.$title.'</a>'; +} + +// ------------------------------------------------------------------------ + +/** + * Encoded Mailto Link + * + * Create a spam-protected mailto link written in Javascript + * + * @access public + * @param string the email address + * @param string the link title + * @param mixed any attributes + * @return string + */ +function safe_mailto($email, $title = '', $attributes = '') +{ + if ($title == "") + { + $title = $email; + } + + for ($i = 0; $i < 16; $i++) + { + $x[] = substr('<a href="mailto:', $i, 1); + } + + for ($i = 0; $i < strlen($email); $i++) + { + $x[] = "|".ord(substr($email, $i, 1)); + } + + $x[] = '"'; + + if ($attributes != '') + { + if (is_array($attributes)) + { + foreach ($attributes as $key => $val) + { + $x[] = ' '.$key.'="'; + for ($i = 0; $i < strlen($val); $i++) + { + $x[] = "|".ord(substr($val, $i, 1)); + } + $x[] = '"'; + } + } + else + { + for ($i = 0; $i < strlen($attributes); $i++) + { + $x[] = substr($attributes, $i, 1); + } + } + } + + $x[] = '>'; + + $temp = array(); + for ($i = 0; $i < strlen($title); $i++) + { + $ordinal = ord($title[$i]); + + if ($ordinal < 128) + { + $x[] = "|".$ordinal; + } + else + { + if (count($temp) == 0) + { + $count = ($ordinal < 224) ? 2 : 3; + } + + $temp[] = $ordinal; + if (count($temp) == $count) + { + $number = ($count == 3) ? (($temp['0'] % 16) * 4096) + (($temp['1'] % 64) * 64) + ($temp['2'] % 64) : (($temp['0'] % 32) * 64) + ($temp['1'] % 64); + $x[] = "|".$number; + $count = 1; + $temp = array(); + } + } + } + + $x[] = '<'; $x[] = '/'; $x[] = 'a'; $x[] = '>'; + + $x = array_reverse($x); + ob_start(); + +?><script type="text/javascript"> +//<![CDATA[ +var l=new Array(); +<?php +$i = 0; +foreach ($x as $val){ ?>l[<?php echo $i++; ?>]='<?php echo $val; ?>';<?php } ?> + +for (var i = l.length-1; i >= 0; i=i-1){ +if (l[i].substring(0, 1) == '|') document.write("&#"+unescape(l[i].substring(1))+";"); +else document.write(unescape(l[i]));} +//]]> +</script><?php + + $buffer = ob_get_contents(); + ob_end_clean(); + return $buffer; +} + +// ------------------------------------------------------------------------ + +/** + * Auto-linker + * + * Automatically links URL and Email addresses. + * Note: There's a bit of extra code here to deal with + * URLs or emails that end in a period. We'll strip these + * off and add them after the link. + * + * @access public + * @param string the string + * @param string the type: email, url, or both + * @param bool whether to create pop-up links + * @return string + */ +function auto_link($str, $type = 'both', $popup = FALSE) +{ + if ($type != 'email') + { + if (preg_match_all("#(^|\s|\()((http(s?)://)|(www\.))(\w+[^\s\)\<]+)#i", $str, $matches)) + { + $pop = ($popup == TRUE) ? " target=\"_blank\" " : ""; + + for ($i = 0; $i < sizeof($matches['0']); $i++) + { + $period = ''; + if (preg_match("|\.$|", $matches['6'][$i])) + { + $period = '.'; + $matches['6'][$i] = substr($matches['6'][$i], 0, -1); + } + + $str = str_replace($matches['0'][$i], + $matches['1'][$i].'<a href="http'. + $matches['4'][$i].'://'. + $matches['5'][$i]. + $matches['6'][$i].'"'.$pop.'>http'. + $matches['4'][$i].'://'. + $matches['5'][$i]. + $matches['6'][$i].'</a>'. + $period, $str); + } + } + } + + if ($type != 'url') + { + if (preg_match_all("/([a-zA-Z0-9_\.\-]+)@([a-zA-Z0-9\-]+)\.([a-zA-Z0-9\-\.]*)/i", $str, $matches)) + { + for ($i = 0; $i < sizeof($matches['0']); $i++) + { + $period = ''; + if (preg_match("|\.$|", $matches['3'][$i])) + { + $period = '.'; + $matches['3'][$i] = substr($matches['3'][$i], 0, -1); + } + + $str = str_replace($matches['0'][$i], safe_mailto($matches['1'][$i].'@'.$matches['2'][$i].'.'.$matches['3'][$i]).$period, $str); + } + + } + } + return $str; +} + +// ------------------------------------------------------------------------ + +/** + * Prep URL + * + * Simply adds the http:// part if missing + * + * @access public + * @param string the URL + * @return string + */ +function prep_url($str = '') +{ + if ($str == 'http://' OR $str == '') + { + return ''; + } + + if (substr($str, 0, 7) != 'http://' && substr($str, 0, 8) != 'https://') + { + $str = 'http://'.$str; + } + + return $str; +} + +// ------------------------------------------------------------------------ + +/** + * Create URL Title + * + * Takes a "title" string as input and creates a + * human-friendly URL string with either a dash + * or an underscore as the word separator. + * + * @access public + * @param string the string + * @param string the separator: dash, or underscore + * @return string + */ +function url_title($str, $separator = 'dash') +{ + if ($separator == 'dash') + { + $search = '_'; + $replace = '-'; + } + else + { + $search = '-'; + $replace = '_'; + } + + $trans = array( + $search => $replace, + "\s+" => $replace, + "[^a-z0-9".$replace."]" => '', + $replace."+" => $replace, + $replace."$" => '', + "^".$replace => '' + ); + + $str = strip_tags(strtolower($str)); + + foreach ($trans as $key => $val) + { + $str = preg_replace("#".$key."#", $val, $str); + } + + return trim(stripslashes($str)); +} + +// ------------------------------------------------------------------------ + +/** + * Header Redirect + * + * Header redirect in two flavors + * + * @access public + * @param string the URL + * @param string the method: location or redirect + * @return string + */ +function redirect($uri = '', $method = 'location') +{ + switch($method) + { + case 'refresh' : header("Refresh:0;url=".site_url($uri)); + break; + default : header("location:".site_url($uri)); + break; + } + exit; +} + +// ------------------------------------------------------------------------ + +/** + * Parse out the attributes + * + * Some of the functions use this + * + * @access private + * @param array + * @param bool + * @return string + */ +function parse_url_attributes($attributes, $javascript = FALSE) +{ + $att = ''; + foreach ($attributes as $key => $val) + { + if ($javascript == TRUE) + { + $att .= $key . '=' . $val . ','; + } + else + { + $att .= ' ' . $key . '="' . $val . '"'; + } + } + + if ($javascript == TRUE) + { + $att = substr($att, 0, -1); + } + + return $att; +} + +?>
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