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/text_helper.php b/system/helpers/text_helper.php
index 20bf323..30cec31 100644
--- a/system/helpers/text_helper.php
+++ b/system/helpers/text_helper.php
@@ -38,27 +38,30 @@
* @param string the end character. Usually an ellipsis
* @return string
*/
-function word_limiter($str, $n = 100, $end_char = '…')
+if (! function_exists('word_limiter'))
{
- if (strlen($str) < $n)
+ function word_limiter($str, $n = 100, $end_char = '…')
{
- return $str;
- }
+ if (strlen($str) < $n)
+ {
+ return $str;
+ }
- $words = explode(' ', preg_replace("/\s+/", ' ', preg_replace("/(\r\n|\r|\n)/", " ", $str)));
+ $words = explode(' ', preg_replace("/\s+/", ' ', preg_replace("/(\r\n|\r|\n)/", " ", $str)));
- if (count($words) <= $n)
- {
- return $str;
- }
+ if (count($words) <= $n)
+ {
+ return $str;
+ }
- $str = '';
- for ($i = 0; $i < $n; $i++)
- {
- $str .= $words[$i].' ';
- }
+ $str = '';
+ for ($i = 0; $i < $n; $i++)
+ {
+ $str .= $words[$i].' ';
+ }
- return trim($str).$end_char;
+ return trim($str).$end_char;
+ }
}
// ------------------------------------------------------------------------
@@ -75,28 +78,31 @@
* @param string the end character. Usually an ellipsis
* @return string
*/
-function character_limiter($str, $n = 500, $end_char = '…')
+if (! function_exists('character_limiter'))
{
- if (strlen($str) < $n)
+ function character_limiter($str, $n = 500, $end_char = '…')
{
- return $str;
- }
-
- $str = preg_replace("/\s+/", ' ', preg_replace("/(\r\n|\r|\n)/", " ", $str));
-
- if (strlen($str) <= $n)
- {
- return $str;
- }
-
- $out = "";
- foreach (explode(' ', trim($str)) as $val)
- {
- $out .= $val.' ';
- if (strlen($out) >= $n)
+ if (strlen($str) < $n)
{
- return trim($out).$end_char;
- }
+ return $str;
+ }
+
+ $str = preg_replace("/\s+/", ' ', preg_replace("/(\r\n|\r|\n)/", " ", $str));
+
+ if (strlen($str) <= $n)
+ {
+ return $str;
+ }
+
+ $out = "";
+ foreach (explode(' ', trim($str)) as $val)
+ {
+ $out .= $val.' ';
+ if (strlen($out) >= $n)
+ {
+ return trim($out).$end_char;
+ }
+ }
}
}
@@ -111,41 +117,44 @@
* @param string
* @return string
*/
-function ascii_to_entities($str)
+if (! function_exists('ascii_to_entities'))
{
- $count = 1;
- $out = '';
- $temp = array();
+ function ascii_to_entities($str)
+ {
+ $count = 1;
+ $out = '';
+ $temp = array();
- for ($i = 0, $s = strlen($str); $i < $s; $i++)
- {
- $ordinal = ord($str[$i]);
+ for ($i = 0, $s = strlen($str); $i < $s; $i++)
+ {
+ $ordinal = ord($str[$i]);
- if ($ordinal < 128)
- {
- $out .= $str[$i];
- }
- else
- {
- if (count($temp) == 0)
+ if ($ordinal < 128)
{
- $count = ($ordinal < 224) ? 2 : 3;
+ $out .= $str[$i];
}
-
- $temp[] = $ordinal;
-
- if (count($temp) == $count)
+ else
{
- $number = ($count == 3) ? (($temp['0'] % 16) * 4096) + (($temp['1'] % 64) * 64) + ($temp['2'] % 64) : (($temp['0'] % 32) * 64) + ($temp['1'] % 64);
+ if (count($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);
- $out .= '&#'.$number.';';
- $count = 1;
- $temp = array();
+ $out .= '&#'.$number.';';
+ $count = 1;
+ $temp = array();
+ }
}
}
- }
- return $out;
+ return $out;
+ }
}
// ------------------------------------------------------------------------
@@ -160,45 +169,48 @@
* @param bool
* @return string
*/
-function entities_to_ascii($str, $all = TRUE)
+if (! function_exists('entities_to_ascii'))
{
- if (preg_match_all('/\&#(\d+)\;/', $str, $matches))
- {
- for ($i = 0, $s = count($matches['0']); $i < $s; $i++)
- {
- $digits = $matches['1'][$i];
+ function entities_to_ascii($str, $all = TRUE)
+ {
+ if (preg_match_all('/\&#(\d+)\;/', $str, $matches))
+ {
+ for ($i = 0, $s = count($matches['0']); $i < $s; $i++)
+ {
+ $digits = $matches['1'][$i];
- $out = '';
+ $out = '';
- if ($digits < 128)
- {
- $out .= chr($digits);
+ if ($digits < 128)
+ {
+ $out .= chr($digits);
- }
- elseif ($digits < 2048)
- {
- $out .= chr(192 + (($digits - ($digits % 64)) / 64));
- $out .= chr(128 + ($digits % 64));
- }
- else
- {
- $out .= chr(224 + (($digits - ($digits % 4096)) / 4096));
- $out .= chr(128 + ((($digits % 4096) - ($digits % 64)) / 64));
- $out .= chr(128 + ($digits % 64));
- }
+ }
+ elseif ($digits < 2048)
+ {
+ $out .= chr(192 + (($digits - ($digits % 64)) / 64));
+ $out .= chr(128 + ($digits % 64));
+ }
+ else
+ {
+ $out .= chr(224 + (($digits - ($digits % 4096)) / 4096));
+ $out .= chr(128 + ((($digits % 4096) - ($digits % 64)) / 64));
+ $out .= chr(128 + ($digits % 64));
+ }
- $str = str_replace($matches['0'][$i], $out, $str);
+ $str = str_replace($matches['0'][$i], $out, $str);
+ }
}
- }
- if ($all)
- {
- $str = str_replace(array("&", "<", ">", """, "'", "-"),
- array("&","<",">","\"", "'", "-"),
- $str);
- }
+ if ($all)
+ {
+ $str = str_replace(array("&", "<", ">", """, "'", "-"),
+ array("&","<",">","\"", "'", "-"),
+ $str);
+ }
- return $str;
+ return $str;
+ }
}
// ------------------------------------------------------------------------
@@ -216,27 +228,30 @@
* @param string the optional replacement value
* @return string
*/
-function word_censor($str, $censored, $replacement = '')
+if (! function_exists('word_censor'))
{
- if ( ! is_array($censored))
+ function word_censor($str, $censored, $replacement = '')
{
- return $str;
- }
+ if ( ! is_array($censored))
+ {
+ return $str;
+ }
- $str = ' '.$str.' ';
- foreach ($censored as $badword)
- {
- if ($replacement != '')
+ $str = ' '.$str.' ';
+ foreach ($censored as $badword)
{
- $str = preg_replace("/\b(".str_replace('\*', '\w*?', preg_quote($badword)).")\b/i", $replacement, $str);
+ if ($replacement != '')
+ {
+ $str = preg_replace("/\b(".str_replace('\*', '\w*?', preg_quote($badword)).")\b/i", $replacement, $str);
+ }
+ else
+ {
+ $str = preg_replace("/\b(".str_replace('\*', '\w*?', preg_quote($badword)).")\b/ie", "str_repeat('#', strlen('\\1'))", $str);
+ }
}
- else
- {
- $str = preg_replace("/\b(".str_replace('\*', '\w*?', preg_quote($badword)).")\b/ie", "str_repeat('#', strlen('\\1'))", $str);
- }
- }
- return trim($str);
+ return trim($str);
+ }
}
// ------------------------------------------------------------------------
@@ -250,45 +265,48 @@
* @param string the text string
* @return string
*/
-function highlight_code($str)
-{
- // The highlight string function encodes and highlights
- // brackets so we need them to start raw
- $str = str_replace(array('<', '>'), array('<', '>'), $str);
+if (! function_exists('highlight_code'))
+{
+ function highlight_code($str)
+ {
+ // The highlight string function encodes and highlights
+ // brackets so we need them to start raw
+ $str = str_replace(array('<', '>'), array('<', '>'), $str);
- // Replace any existing PHP tags to temporary markers so they don't accidentally
- // break the string out of PHP, and thus, thwart the highlighting.
+ // Replace any existing PHP tags to temporary markers so they don't accidentally
+ // break the string out of PHP, and thus, thwart the highlighting.
- $str = str_replace(array('<?', '?>', '<%', '%>', '\\', '</script>'),
- array('phptagopen', 'phptagclose', 'asptagopen', 'asptagclose', 'backslashtmp', 'scriptclose'), $str);
+ $str = str_replace(array('<?', '?>', '<%', '%>', '\\', '</script>'),
+ array('phptagopen', 'phptagclose', 'asptagopen', 'asptagclose', 'backslashtmp', 'scriptclose'), $str);
- // The highlight_string function requires that the text be surrounded
- // by PHP tags. Since we don't know if A) the submitted text has PHP tags,
- // or B) whether the PHP tags enclose the entire string, we will add our
- // own PHP tags around the string along with some markers to make replacement easier later
+ // The highlight_string function requires that the text be surrounded
+ // by PHP tags. Since we don't know if A) the submitted text has PHP tags,
+ // or B) whether the PHP tags enclose the entire string, we will add our
+ // own PHP tags around the string along with some markers to make replacement easier later
- $str = '<?php tempstart'."\n".$str.'tempend ?>';
+ $str = '<?php tempstart'."\n".$str.'tempend ?>';
- // All the magic happens here, baby!
- $str = highlight_string($str, TRUE);
+ // All the magic happens here, baby!
+ $str = highlight_string($str, TRUE);
- // Prior to PHP 5, the highlight function used icky font tags
- // so we'll replace them with span tags.
- if (abs(phpversion()) < 5)
- {
- $str = str_replace(array('<font ', '</font>'), array('<span ', '</span>'), $str);
- $str = preg_replace('#color="(.*?)"#', 'style="color: \\1"', $str);
- }
+ // Prior to PHP 5, the highlight function used icky font tags
+ // so we'll replace them with span tags.
+ if (abs(phpversion()) < 5)
+ {
+ $str = str_replace(array('<font ', '</font>'), array('<span ', '</span>'), $str);
+ $str = preg_replace('#color="(.*?)"#', 'style="color: \\1"', $str);
+ }
- // Remove our artificially added PHP
- $str = preg_replace("#\<code\>.+?tempstart\<br />(?:\</span\>)?#is", "<code>\n", $str);
- $str = preg_replace("#tempend.+#is", "</span>\n</code>", $str);
+ // Remove our artificially added PHP
+ $str = preg_replace("#\<code\>.+?tempstart\<br />(?:\</span\>)?#is", "<code>\n", $str);
+ $str = preg_replace("#tempend.+#is", "</span>\n</code>", $str);
- // Replace our markers back to PHP tags.
- $str = str_replace(array('phptagopen', 'phptagclose', 'asptagopen', 'asptagclose', 'backslashtmp', 'scriptclose'),
- array('<?', '?>', '<%', '%>', '\\', '</script>'), $str);
+ // Replace our markers back to PHP tags.
+ $str = str_replace(array('phptagopen', 'phptagclose', 'asptagopen', 'asptagclose', 'backslashtmp', 'scriptclose'),
+ array('<?', '?>', '<%', '%>', '\\', '</script>'), $str);
- return $str;
+ return $str;
+ }
}
// ------------------------------------------------------------------------
@@ -305,19 +323,22 @@
* @param string the closing tag to end the phrase with
* @return string
*/
-function highlight_phrase($str, $phrase, $tag_open = '<strong>', $tag_close = '</strong>')
+if (! function_exists('highlight_phrase'))
{
- if ($str == '')
+ function highlight_phrase($str, $phrase, $tag_open = '<strong>', $tag_close = '</strong>')
{
- return '';
- }
+ if ($str == '')
+ {
+ return '';
+ }
- if ($phrase != '')
- {
- return preg_replace('/('.preg_quote($phrase, '/').')/i', $tag_open."\\1".$tag_close, $str);
- }
+ if ($phrase != '')
+ {
+ return preg_replace('/('.preg_quote($phrase, '/').')/i', $tag_open."\\1".$tag_close, $str);
+ }
- return $str;
+ return $str;
+ }
}
// ------------------------------------------------------------------------
@@ -334,89 +355,91 @@
* @param integer the number of characters to wrap at
* @return string
*/
-function word_wrap($str, $charlim = '76')
+if (! function_exists('word_wrap'))
{
- // Se the character limit
- if ( ! is_numeric($charlim))
- $charlim = 76;
-
- // Reduce multiple spaces
- $str = preg_replace("| +|", " ", $str);
-
- // Standardize newlines
- $str = preg_replace("/\r\n|\r/", "\n", $str);
-
- // If the current word is surrounded by {unwrap} tags we'll
- // strip the entire chunk and replace it with a marker.
- $unwrap = array();
- if (preg_match_all("|(\{unwrap\}.+?\{/unwrap\})|s", $str, $matches))
+ function word_wrap($str, $charlim = '76')
{
- for ($i = 0; $i < count($matches['0']); $i++)
- {
- $unwrap[] = $matches['1'][$i];
- $str = str_replace($matches['1'][$i], "{{unwrapped".$i."}}", $str);
- }
- }
+ // Se the character limit
+ if ( ! is_numeric($charlim))
+ $charlim = 76;
- // Use PHP's native function to do the initial wordwrap.
- // We set the cut flag to FALSE so that any individual words that are
- // too long get left alone. In the next step we'll deal with them.
- $str = wordwrap($str, $charlim, "\n", FALSE);
+ // Reduce multiple spaces
+ $str = preg_replace("| +|", " ", $str);
- // Split the string into individual lines of text and cycle through them
- $output = "";
- foreach (explode("\n", $str) as $line)
- {
- // Is the line within the allowed character count?
- // If so we'll join it to the output and continue
- if (strlen($line) <= $charlim)
+ // Standardize newlines
+ $str = preg_replace("/\r\n|\r/", "\n", $str);
+
+ // If the current word is surrounded by {unwrap} tags we'll
+ // strip the entire chunk and replace it with a marker.
+ $unwrap = array();
+ if (preg_match_all("|(\{unwrap\}.+?\{/unwrap\})|s", $str, $matches))
{
- $output .= $line."\n";
- continue;
- }
-
- $temp = '';
- while((strlen($line)) > $charlim)
- {
- // If the over-length word is a URL we won't wrap it
- if (preg_match("!\[url.+\]|://|wwww.!", $line))
+ for ($i = 0; $i < count($matches['0']); $i++)
{
- break;
+ $unwrap[] = $matches['1'][$i];
+ $str = str_replace($matches['1'][$i], "{{unwrapped".$i."}}", $str);
+ }
+ }
+
+ // Use PHP's native function to do the initial wordwrap.
+ // We set the cut flag to FALSE so that any individual words that are
+ // too long get left alone. In the next step we'll deal with them.
+ $str = wordwrap($str, $charlim, "\n", FALSE);
+
+ // Split the string into individual lines of text and cycle through them
+ $output = "";
+ foreach (explode("\n", $str) as $line)
+ {
+ // Is the line within the allowed character count?
+ // If so we'll join it to the output and continue
+ if (strlen($line) <= $charlim)
+ {
+ $output .= $line."\n";
+ continue;
+ }
+
+ $temp = '';
+ while((strlen($line)) > $charlim)
+ {
+ // If the over-length word is a URL we won't wrap it
+ if (preg_match("!\[url.+\]|://|wwww.!", $line))
+ {
+ break;
+ }
+
+ // Trim the word down
+ $temp .= substr($line, 0, $charlim-1);
+ $line = substr($line, $charlim-1);
+ }
+
+ // If $temp contains data it means we had to split up an over-length
+ // word into smaller chunks so we'll add it back to our current line
+ if ($temp != '')
+ {
+ $output .= $temp . "\n" . $line;
+ }
+ else
+ {
+ $output .= $line;
}
- // Trim the word down
- $temp .= substr($line, 0, $charlim-1);
- $line = substr($line, $charlim-1);
- }
-
- // If $temp contains data it means we had to split up an over-length
- // word into smaller chunks so we'll add it back to our current line
- if ($temp != '')
- {
- $output .= $temp . "\n" . $line;
- }
- else
- {
- $output .= $line;
+ $output .= "\n";
}
- $output .= "\n";
+ // Put our markers back
+ if (count($unwrap) > 0)
+ {
+ foreach ($unwrap as $key => $val)
+ {
+ $output = str_replace("{{unwrapped".$key."}}", $val, $output);
+ }
+ }
+
+ // Remove the unwrap tags
+ $output = str_replace(array('{unwrap}', '{/unwrap}'), '', $output);
+
+ return $output;
}
-
- // Put our markers back
- if (count($unwrap) > 0)
- {
- foreach ($unwrap as $key => $val)
- {
- $output = str_replace("{{unwrapped".$key."}}", $val, $output);
- }
- }
-
- // Remove the unwrap tags
- $output = str_replace(array('{unwrap}', '{/unwrap}'), '', $output);
-
- return $output;
}
-
?>
\ No newline at end of file