<?php
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define('RECORD_SEPERATOR', chr(0x1e));
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define('UNIT_SEPERATOR', chr(0x1f));
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class MARC21 {
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static function from_string($data) {
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$lead_len = 24;
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$lead = substr($data, 0, $lead_len);
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$file_length = substr($lead, 0, 5);
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$head_len = substr($lead, 12, 5);
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$cat_record_lof = substr($lead, 20, 1);
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$cat_record_scp = substr($lead, 21, 1);
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$cat_record_imp = substr($lead, 22, 1);
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$cat_record_len = 3 + $cat_record_lof + $cat_record_scp + $cat_record_imp;
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$cat_len = $head_len-$lead_len-1;
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$cat = substr($data, $lead_len, $cat_len);
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$info = substr($data, $head_len);
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$unit = FALSE;
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for($i=0; $i<$cat_len; $i += $cat_record_len) {
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$rec_num = substr($cat, $i, 3);
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if($rec_num>899) {
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continue;
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}
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$rec_len = substr($cat, $i+3, $cat_record_lof);
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$rec_start = substr($cat, $i+3+$cat_record_lof, $cat_record_scp);
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$rec = substr($info, $rec_start, $rec_len-1);
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$temp = array();
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$unit = FALSE;
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$unit_letter = 'a';
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for($j=0; $j<$rec_len; $j++) {
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$char = substr($rec, $j, 1);
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if(($j==0 || $j==1) && $rec_num>9 && $char!=' ') {
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if($j==0) {
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$temp['f0'] = $char;
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}
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elseif($j==1) {
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$temp['f1'] = $char;
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}
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}
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elseif($char == UNIT_SEPERATOR) {
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$unit = TRUE;
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}
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elseif($unit === TRUE) {
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$temp[$unit_letter] = trim($collect, ' :;,/');
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$unit = FALSE;
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$unit_letter = $char;
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$collect = '';
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}
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else
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{
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$collect .= $char;
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}
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}
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$temp[$unit_letter] = trim($collect, ' :;,/');
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$collect = '';
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$return[$rec_num][] = $temp;
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}
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return $return;
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}
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static function to_array($MARC) {
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if(!$MARC['020']) {
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$MARC['020'] = array();
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}
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foreach($MARC['020'] as $value) {
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$value = (string)$value['a'];
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if(strlen($value)==9 AND strlen($value)!=13) {
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$value .= checksum::ISBN($value);
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}
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if( strlen($value) > strlen($ISBN) ) {
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$ISBN = $value;
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}
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}
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if(!$MARC['022']) {
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$MARC['022'] = array();
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}
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foreach($MARC['022'] as $value) {
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$value = (int)$value['a'];
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if( strlen($value) > strlen($ISSN) ) {
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$ISSN = $value;
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}
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}
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if($MARC['100'][0]['f0']==1) {
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$autor = explode(', ', $MARC['100'][0]['a'], 2);
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$MARC['100'][0]['a'] = str_replace('.', '', $autor[1]).' '.$autor[0];
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}
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if(empty($MARC['100'][0]['a'])) {
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$MARC['100'][0]['a'] = 'Praca zbiorowa';
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}
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$MARC['260'][0]['b'] = str_replace(
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array(
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'Wydaw.',
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'Państ.',
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'Państw.',
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'PK',
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'Min.',
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),
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array(
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'Wydawnictwo',
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'Państwowy',
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'Państwowe',
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'Politechnika Krakowska',
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'Ministerstwa',
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),
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$MARC['260'][0]['b']);
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if($MARC['041'][0]['a'] == 'pol') {
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$MARC['041'][0]['a'] = 'polski';
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}
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if(empty($MARC['041'][0]['a'])) {
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$MARC['041'][0]['a'] = 'polski';
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}
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if(!empty($MARC['245'][0]['b'])) {
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$MARC['245'][0]['a'] = trim($MARC['245'][0]['a'], '().,\\/"\' ').'. '.ucfirst(trim($MARC['245'][0]['b'], '().,\\/"\' '));
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}
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return array(
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'tytul' => trim($MARC['245'][0]['a'], '().,\\/"\' '),
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'autor' => trim($MARC['100'][0]['a'], '().,\\/"\' '),
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'rok' => trim($MARC['260'][0]['c'], '().,\\/"\' '),
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'miejsce' => trim($MARC['260'][0]['a'], '().,\\/"\' '),
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'wydawnictwo' => trim($MARC['260'][0]['b'], '().,\\/"\' '),
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'wydanie' => trim($MARC['250'][0]['a'], '().,\\/"\' '),
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'jezyk' => $MARC['041'][0]['a'],
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'ISBN' => $ISBN,
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'ISSN' => $ISSN,
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/* stan */
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);
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}
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static function to_database($kod, $MARC) {
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if(!$MARC['020']) {
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$MARC['020'] = array();
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}
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foreach($MARC['020'] as $value) {
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$value = (int)$value['a'];
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if( strlen($value) > strlen($ISBN) ) {
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$ISBN = $value;
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}
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}
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if(!$MARC['022']) {
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$MARC['022'] = array();
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}
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foreach($MARC['022'] as $value) {
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$value = (int)$value['a'];
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if( strlen($value) > strlen($ISSN) ) {
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$ISSN = $value;
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}
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}
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db2::add('ksiazki', array(
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'id' => $kod,
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'tytul' => $MARC['245'][0]['a'],
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'autor' => $MARC['100'][0]['a'],
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'rok' => $MARC['260'][0]['c'],
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'miejsce' => $MARC['260'][0]['a'],
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'wydawnictwo' => $MARC['260'][0]['b'],
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'wydanie' => $MARC['250'][0]['a'],
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'jezyk' => $MARC['041'][0]['a'],
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'ISBN' => $ISBN,
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'ISSN' => $ISSN,
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/* stan */
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));
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}
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}
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?>
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