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<?php
 /**
 * AcronymIT - PHP Class to create acronyms into a text
 *
 * Tested and working on PHP 4.3.2 and higher
 *
 * LICENSE: This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License v2 as published by
 * the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 *
 * @author       Giulio Bai <[email protected]>
 * @copyright   (C)2007 Giulio Bai - GNU GPL
 * @license       http://www.gnu.org/licenses/gpl.html GNU General public License
 * @version      1.0
 * @link            http://hewle.com
 */
 
 
 /**
 * A class to check the presence of a domain name, having any extension.
 *
 * Example of use (1):
 * The following code will find all the acronyms in the text passed to the method
 * and will link to the italian version of Wikipediafor further explanations
 * <code>
 * include_once('acronymIT.php');
 *
 * $text = "The PHP version 6 is under development. Read more on the WWW or get info via RSS";
 * $acronymit = new AcronymIT();
 * $text = $acronymit->acronym($text, 1, "it");
 *
 * echo $text;
 * </code>
 *
 * Example of use (2):
 * Listing acronyms stored in the default file, then in another one.
 * <code>
 * include_once('acronymIT.php');
 *
 * $acronymit = new AcronymIT();
 * echo "File $acronymit->file:<br />"; // Will be "FIle acronyms.dat:"
 * $acronymit->list_acronyms(5); // Lists the first 5 acronyms in the default file
 *
 * $acronymit->set_file("path/to/other_acronyms.txt"); // Changing the file
 *
 * echo "File $acronymit->file:"; // Will be "File path/to/other_acronyms.txt:"
 * $acronymit->list_acronyms() // Lists all the acronyms in the file
 *
 * echo "Done! ;)";
 * </code>
 *
 * @author      Giulio Bai <[email protected]>
 * @copyright  (C)2007 Giulio Bai
 * @license      http://www.gnu.org/licenses/gpl.html GNU General Public License
 * @version     1.0
 * @link           http://hewle.com
 */
 class AcronymIT
 {
 
 var $file = 'acronyms.dat';
 
 /**
 * Looks for the known (and most common) acronyms in the text and make them
 * HTML acronyms (so they'll have the <acronym> tag).
 *
 * @param string $text the text to scan for acronyms
 * @param bool $link if set, prints also the link to Wikipedia
 * @param string $lang the language of the Wikipedia portal to link
 * @return string the new text with the acronyms
 */
 function acronym($text, $link = 0, $lang = "en")
 {
 $acronyms = parse_ini_file($this->file);
 
 foreach($acronyms as $acronym => $definition) {
 if ($link)
 $aux = " <a href=\"$lang.wikipedia.org/wiki/$acronym\" title=\"Further info about $acronym\">(?)</a> ";
 else
 $aux = " ";
 
 $text = str_ireplace(" $acronym ", " <span style=\"text-transform: uppercase\"><acronym title=\"$definition\">$acronym</acronym></span>$aux", $text);
 }
 
 return $text;
 }
 
 
 /**
 * Lists acronyms stored in the selected file
 *
 * By putting a negative value as limit, all the acronyms will be listed
 *
 * @param int $limit how many acronyms do you want to print?
 * @return void
 */
 function list_acronyms($limit = -1)
 {
 $acronyms = parse_ini_file($this->file);
 
 $count = count($acronyms);
 
 foreach($acronyms as $acronym => $definition) {
 if ($count > count($acronyms) - $limit) {
 echo count($acronyms)-$count . '. ' . $acronym . ': ' . $definition . '<br />';
 
 $count --;
 } else
 return;
 }
 }
 
 
 /**
 * Sets the file where acronyms are stored in
 *
 * @param string $file the file path
 * @return void
 */
 function set_file($file)
 {
 $this->file = $file;
 }
 
 
 /**
 * Adds the specified acronym to the file set before through the set_file() method
 *
 * @see set_file()
 * @see rm_acronym()
 * @param string $acronym the acronym to add
 * @param string $definition what does the acronym mean?
 * @return bool true on success
 */
 function add_acronym($acronym, $definition)
 {
 $data = "";
 
 for ($i=0; $i<count(file($this->file)); $i++)
 $data .= $this->file[$i];
 
 $data .= "\n$acronym = \"$definition\"";
 
 if(file_put_contents($this->file, $data)) return true;
 
 return false;
 }
 
 /**
 * Deletes the specified acronym from the file set before through the set_file() method
 *
 * @see set_file()
 * @see add_acronym()
 * @param int $id the id of the acronym to remove
 * @return bool true on success
 */
 function rm_acronym($id)
 {
 //Loop through reading all lines except the one you want to delete
 for ($i=0; $i<count(file($this->file)); $i++)
 if ($i != $id)
 $data .= $this->file[$i];
 
 if(file_put_contents($this->file, $data)) return true;
 
 return false;
 }
 }
 
 ?>
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