added ability to "extend" helpers
* modified Loader to check for prefixed helpers in application/helpers folder
* surrounded provided helper functions with if (! function_exists('foo')) conditionals so the user's helper functions take precedent.
diff --git a/system/helpers/url_helper.php b/system/helpers/url_helper.php
index 9969af0..ad71caa 100644
--- a/system/helpers/url_helper.php
+++ b/system/helpers/url_helper.php
@@ -37,10 +37,13 @@
* @param string
* @return string
*/
-function site_url($uri = '')
+if (! function_exists('site_url'))
{
- $CI =& get_instance();
- return $CI->config->site_url($uri);
+ function site_url($uri = '')
+ {
+ $CI =& get_instance();
+ return $CI->config->site_url($uri);
+ }
}
// ------------------------------------------------------------------------
@@ -53,10 +56,13 @@
* @access public
* @return string
*/
-function base_url()
+if (! function_exists('base_url'))
{
- $CI =& get_instance();
- return $CI->config->slash_item('base_url');
+ function base_url()
+ {
+ $CI =& get_instance();
+ return $CI->config->slash_item('base_url');
+ }
}
// ------------------------------------------------------------------------
@@ -69,10 +75,13 @@
* @access public
* @return string
*/
-function index_page()
+if (! function_exists('index_page'))
{
- $CI =& get_instance();
- return $CI->config->item('index_page');
+ function index_page()
+ {
+ $CI =& get_instance();
+ return $CI->config->item('index_page');
+ }
}
// ------------------------------------------------------------------------
@@ -88,34 +97,37 @@
* @param mixed any attributes
* @return string
*/
-function anchor($uri = '', $title = '', $attributes = '')
+if (! function_exists('anchor'))
{
- $title = (string) $title;
+ function anchor($uri = '', $title = '', $attributes = '')
+ {
+ $title = (string) $title;
- if ( ! is_array($uri))
- {
- $site_url = ( ! preg_match('!^\w+://!i', $uri)) ? site_url($uri) : $uri;
- }
- else
- {
- $site_url = site_url($uri);
- }
+ if ( ! is_array($uri))
+ {
+ $site_url = ( ! preg_match('!^\w+://!i', $uri)) ? site_url($uri) : $uri;
+ }
+ else
+ {
+ $site_url = site_url($uri);
+ }
- if ($title == '')
- {
- $title = $site_url;
- }
+ if ($title == '')
+ {
+ $title = $site_url;
+ }
- if ($attributes == '')
- {
- $attributes = ' title="'.$title.'"';
- }
- else
- {
- $attributes = _parse_attributes($attributes);
- }
+ if ($attributes == '')
+ {
+ $attributes = ' title="'.$title.'"';
+ }
+ else
+ {
+ $attributes = _parse_attributes($attributes);
+ }
- return '<a href="'.$site_url.'"'.$attributes.'>'.$title.'</a>';
+ return '<a href="'.$site_url.'"'.$attributes.'>'.$title.'</a>';
+ }
}
// ------------------------------------------------------------------------
@@ -132,33 +144,36 @@
* @param mixed any attributes
* @return string
*/
-function anchor_popup($uri = '', $title = '', $attributes = FALSE)
-{
- $title = (string) $title;
+if (! function_exists('anchor_popup'))
+{
+ function anchor_popup($uri = '', $title = '', $attributes = FALSE)
+ {
+ $title = (string) $title;
- $site_url = ( ! preg_match('!^\w+://!i', $uri)) ? site_url($uri) : $uri;
+ $site_url = ( ! preg_match('!^\w+://!i', $uri)) ? site_url($uri) : $uri;
- if ($title == '')
- {
- $title = $site_url;
- }
+ if ($title == '')
+ {
+ $title = $site_url;
+ }
- if ($attributes === FALSE)
- {
- return "<a href='javascript:void(0);' onclick=\"window.open('".$site_url."', '_blank');\">".$title."</a>";
- }
+ if ($attributes === FALSE)
+ {
+ return "<a href='javascript:void(0);' onclick=\"window.open('".$site_url."', '_blank');\">".$title."</a>";
+ }
- if ( ! is_array($attributes))
- {
- $attributes = array();
- }
+ if ( ! is_array($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];
- }
+ 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('".$site_url."', '_blank', '"._parse_attributes($atts, TRUE)."');\">".$title."</a>";
+ return "<a href='javascript:void(0);' onclick=\"window.open('".$site_url."', '_blank', '"._parse_attributes($atts, TRUE)."');\">".$title."</a>";
+ }
}
// ------------------------------------------------------------------------
@@ -172,18 +187,21 @@
* @param mixed any attributes
* @return string
*/
-function mailto($email, $title = '', $attributes = '')
+if (! function_exists('mailto'))
{
- $title = (string) $title;
-
- if ($title == "")
+ function mailto($email, $title = '', $attributes = '')
{
- $title = $email;
+ $title = (string) $title;
+
+ if ($title == "")
+ {
+ $title = $email;
+ }
+
+ $attributes = _parse_attributes($attributes);
+
+ return '<a href="mailto:'.$email.'"'.$attributes.'>'.$title.'</a>';
}
-
- $attributes = _parse_attributes($attributes);
-
- return '<a href="mailto:'.$email.'"'.$attributes.'>'.$title.'</a>';
}
// ------------------------------------------------------------------------
@@ -199,100 +217,103 @@
* @param mixed any attributes
* @return string
*/
-function safe_mailto($email, $title = '', $attributes = '')
+if (! function_exists('safe_mailto'))
{
- $title = (string) $title;
-
- if ($title == "")
+ function safe_mailto($email, $title = '', $attributes = '')
{
- $title = $email;
- }
+ $title = (string) $title;
+
+ if ($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($attributes))
+ for ($i = 0; $i < 16; $i++)
{
- foreach ($attributes as $key => $val)
+ $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))
{
- $x[] = ' '.$key.'="';
- for ($i = 0; $i < strlen($val); $i++)
+ foreach ($attributes as $key => $val)
{
- $x[] = "|".ord(substr($val, $i, 1));
+ $x[] = ' '.$key.'="';
+ for ($i = 0; $i < strlen($val); $i++)
+ {
+ $x[] = "|".ord(substr($val, $i, 1));
+ }
+ $x[] = '"';
}
- $x[] = '"';
}
- }
- else
- {
- for ($i = 0; $i < strlen($attributes); $i++)
- {
- $x[] = substr($attributes, $i, 1);
+ else
+ {
+ for ($i = 0; $i < strlen($attributes); $i++)
+ {
+ $x[] = substr($attributes, $i, 1);
+ }
}
- }
- }
+ }
- $x[] = '>';
+ $x[] = '>';
- $temp = array();
- for ($i = 0; $i < strlen($title); $i++)
- {
- $ordinal = ord($title[$i]);
-
- if ($ordinal < 128)
+ $temp = array();
+ for ($i = 0; $i < strlen($title); $i++)
{
- $x[] = "|".$ordinal;
- }
- else
- {
- if (count($temp) == 0)
+ $ordinal = ord($title[$i]);
+
+ if ($ordinal < 128)
{
- $count = ($ordinal < 224) ? 2 : 3;
+ $x[] = "|".$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();
+ $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;
}
-
- $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 $buffer;
}
// ------------------------------------------------------------------------
@@ -311,55 +332,58 @@
* @param bool whether to create pop-up links
* @return string
*/
-function auto_link($str, $type = 'both', $popup = FALSE)
+if (! function_exists('auto_link'))
{
- if ($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']); $i++)
+ function auto_link($str, $type = 'both', $popup = FALSE)
+ {
+ if ($type != 'email')
+ {
+ if (preg_match_all("#(^|\s|\()((http(s?)://)|(www\.))(\w+[^\s\)\<]+)#i", $str, $matches))
{
- $period = '';
- if (preg_match("|\.$|", $matches['6'][$i]))
+ $pop = ($popup == TRUE) ? " target=\"_blank\" " : "";
+
+ for ($i = 0; $i < sizeof($matches['0']); $i++)
{
- $period = '.';
- $matches['6'][$i] = substr($matches['6'][$i], 0, -1);
- }
+ $period = '';
+ if (preg_match("|\.$|", $matches['6'][$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);
+ $str = str_replace($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']); $i++)
+ if ($type != 'url')
+ {
+ if (preg_match_all("/([a-zA-Z0-9_\.\-]+)@([a-zA-Z0-9\-]+)\.([a-zA-Z0-9\-\.]*)/i", $str, $matches))
{
- $period = '';
- if (preg_match("|\.$|", $matches['3'][$i]))
+ for ($i = 0; $i < sizeof($matches['0']); $i++)
{
- $period = '.';
- $matches['3'][$i] = substr($matches['3'][$i], 0, -1);
- }
+ $period = '';
+ if (preg_match("|\.$|", $matches['3'][$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);
- }
+ $str = str_replace($matches['0'][$i], safe_mailto($matches['1'][$i].'@'.$matches['2'][$i].'.'.$matches['3'][$i]).$period, $str);
+ }
+ }
}
+ return $str;
}
- return $str;
}
// ------------------------------------------------------------------------
@@ -373,19 +397,22 @@
* @param string the URL
* @return string
*/
-function prep_url($str = '')
+if (! function_exists('prep_url'))
{
- if ($str == 'http://' OR $str == '')
+ function prep_url($str = '')
{
- return '';
- }
+ if ($str == 'http://' OR $str == '')
+ {
+ return '';
+ }
- if (substr($str, 0, 7) != 'http://' && substr($str, 0, 8) != 'https://')
- {
- $str = 'http://'.$str;
- }
+ if (substr($str, 0, 7) != 'http://' && substr($str, 0, 8) != 'https://')
+ {
+ $str = 'http://'.$str;
+ }
- return $str;
+ return $str;
+ }
}
// ------------------------------------------------------------------------
@@ -402,36 +429,39 @@
* @param string the separator: dash, or underscore
* @return string
*/
-function url_title($str, $separator = 'dash')
+if (! function_exists('url_title'))
{
- if ($separator == 'dash')
+ function url_title($str, $separator = 'dash')
{
- $search = '_';
- $replace = '-';
- }
- else
- {
- $search = '-';
- $replace = '_';
- }
+ if ($separator == 'dash')
+ {
+ $search = '_';
+ $replace = '-';
+ }
+ else
+ {
+ $search = '-';
+ $replace = '_';
+ }
- $trans = array(
- $search => $replace,
- "\s+" => $replace,
- "[^a-z0-9".$replace."]" => '',
- $replace."+" => $replace,
- $replace."$" => '',
- "^".$replace => ''
- );
+ $trans = array(
+ $search => $replace,
+ "\s+" => $replace,
+ "[^a-z0-9".$replace."]" => '',
+ $replace."+" => $replace,
+ $replace."$" => '',
+ "^".$replace => ''
+ );
- $str = strip_tags(strtolower($str));
+ $str = strip_tags(strtolower($str));
- foreach ($trans as $key => $val)
- {
- $str = preg_replace("#".$key."#", $val, $str);
+ foreach ($trans as $key => $val)
+ {
+ $str = preg_replace("#".$key."#", $val, $str);
+ }
+
+ return trim(stripslashes($str));
}
-
- return trim(stripslashes($str));
}
// ------------------------------------------------------------------------
@@ -446,16 +476,19 @@
* @param string the method: location or redirect
* @return string
*/
-function redirect($uri = '', $method = 'location')
+if (! function_exists('redirect'))
{
- switch($method)
+ function redirect($uri = '', $method = 'location')
{
- case 'refresh' : header("Refresh:0;url=".site_url($uri));
- break;
- default : header("Location: ".site_url($uri));
- break;
+ switch($method)
+ {
+ case 'refresh' : header("Refresh:0;url=".site_url($uri));
+ break;
+ default : header("Location: ".site_url($uri));
+ break;
+ }
+ exit;
}
- exit;
}
// ------------------------------------------------------------------------
@@ -470,32 +503,35 @@
* @param bool
* @return string
*/
-function _parse_attributes($attributes, $javascript = FALSE)
+if (! function_exists('_parse_attributes'))
{
- if (is_string($attributes))
+ function _parse_attributes($attributes, $javascript = FALSE)
{
- return ($attributes != '') ? ' '.$attributes : '';
- }
+ if (is_string($attributes))
+ {
+ return ($attributes != '') ? ' '.$attributes : '';
+ }
- $att = '';
- foreach ($attributes as $key => $val)
- {
- if ($javascript == TRUE)
+ $att = '';
+ foreach ($attributes as $key => $val)
{
- $att .= $key . '=' . $val . ',';
+ if ($javascript == TRUE)
+ {
+ $att .= $key . '=' . $val . ',';
+ }
+ else
+ {
+ $att .= ' ' . $key . '="' . $val . '"';
+ }
}
- else
+
+ if ($javascript == TRUE AND $att != '')
{
- $att .= ' ' . $key . '="' . $val . '"';
+ $att = substr($att, 0, -1);
}
- }
- if ($javascript == TRUE AND $att != '')
- {
- $att = substr($att, 0, -1);
+ return $att;
}
-
- return $att;
}
?>
\ No newline at end of file