110 lines
3 KiB
PHP
110 lines
3 KiB
PHP
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<?php
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/**
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* Created by Stefan Herndler.
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* User: Stefan
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* Date: 17.05.14
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* Time: 00:16
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* Version: 1.0
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* Since: 1.0-gamma
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*/
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/**
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* converts a integer into the user-defined counter style for the footnotes
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* @since 1.0-gamma
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* @param int $p_int_Index
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* @param string $p_str_ConvertStyle [counter style]
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* @return string
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*/
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function footnote_convert_index($p_int_Index, $p_str_ConvertStyle="arabic_plain")
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{
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switch($p_str_ConvertStyle) {
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case "romanic":
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return footnote_convert_to_romanic($p_int_Index);
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case "latin_high":
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return footnote_convert_to_latin($p_int_Index, true);
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case "latin_low":
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return footnote_convert_to_latin($p_int_Index, false);
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case "arabic_leading":
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return footnote_convert_to_arabic_leading($p_int_Index);
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case "arabic_plain":
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default:
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return $p_int_Index;
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}
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}
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/**
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* converts a integer into latin ascii characters, either lower or upper-case
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* function available from A to ZZ ( means 676 footnotes at 1 page possible)
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* @since 1.0-gamma
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* @param int $p_int_Value
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* @param bool $p_bool_UpperCase
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* @return string
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*/
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function footnote_convert_to_latin($p_int_Value, $p_bool_UpperCase)
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{
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/* decimal value of the starting ascii character */
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$l_int_StartinAscii = 65-1; // = A
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/* if lower-case, change decimal to lower-case "a" */
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if (!$p_bool_UpperCase) {
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$l_int_StartinAscii = 97-1; // = a
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}
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/* output string */
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$l_str_Return = "";
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$l_int_Offset = 0;
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/* check if the value is higher then 26 = Z */
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while($p_int_Value > 26) {
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/* increase offset and reduce counter */
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$l_int_Offset++;
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$p_int_Value -= 26;
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}
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/* if offset set (more then Z), then add a new letter in fron */
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if ($l_int_Offset > 0) {
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$l_str_Return = chr($l_int_Offset + $l_int_StartinAscii);
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}
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/* add the origin letter */
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$l_str_Return .= chr($p_int_Value + $l_int_StartinAscii);
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/* return the latin character representing the integer */
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return $l_str_Return;
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}
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/**
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* converts a integer to a leading-0 integer
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* @since 1.0-gamma
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* @param int $p_int_Value
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* @return string
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*/
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function footnote_convert_to_arabic_leading($p_int_Value)
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{
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/* add a leading 0 if number lower then 10 */
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if ($p_int_Value < 10) {
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return "0" . $p_int_Value;
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}
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return $p_int_Value;
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}
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/**
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* converts a arabic integer value into a romanic letter value
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* @since 1.0-gamma
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* @param int $p_int_Value
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* @return string
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*/
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function footnote_convert_to_romanic($p_int_Value)
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{
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/* table containing all necessary romanic letters */
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$l_arr_RomanicLetters = array('M'=>1000, 'CM'=>900, 'D'=>500, 'CD'=>400, 'C'=>100, 'XC'=>90, 'L'=>50, 'XL'=>40, 'X'=>10, 'IX'=>9, 'V'=>5, 'IV'=>4, 'I'=>1);
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/* return value */
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$l_str_Return = '';
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/* loop through integer value until it is reduced to 0 */
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while($p_int_Value > 0) {
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foreach($l_arr_RomanicLetters as $l_str_Romanic => $l_int_Arabic) {
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if($p_int_Value >= $l_int_Arabic) {
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$p_int_Value -= $l_int_Arabic;
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$l_str_Return .= $l_str_Romanic;
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break;
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}
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}
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}
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/* return romanic letters as string */
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return $l_str_Return;
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}
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