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unAPI.inc.php
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unAPI.inc.php
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<?php
/*
* Purpose
*
* These objects and their respective functions follow
* - PicaRecord
* - Picappn
*
* These functions follow
* - final_result
*
* PHP5 and its curl module are recommended.
*/
/*
* Copyright
*
* Copyright 2008 2009 Goetz Hatop <[email protected]>.
* Goetz Hatop's original version can be found at
* <ftp://ftp.ub.uni-marburg.de/pub/research/unapi.tar.gz>.
*
* Copyright 2009 2010 Stephan Rosenke <[email protected]> or
* <[email protected]>. See also <http://r0s.de/unapi>.
*/
/*
* License
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* 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, see <http://www.gnu.org/licenses/>.
*/
/*
* Version
*
* 0.7
*/
/*
* Changelog
*
* 20100303: Added check of $use_curl as additional switch for de-
* activating curl.
* 20100219: Added function "getCsv()" to class "Picappn".
* Renamend keys "RVK" to "rvk" and "DDC" to "ddc".
* 20100131: Added (e)Journals to "getBibTex()", "getOpenUrlKev()" and
* "getText()" in class "Picappn".
* 20100127: Added link in copyright.
* 20100126: Transfered "getArrayNice()" from class "Picappn" to
* "PicaRecord". Removed dead code. Added comments.
* 20100125: Added comments.
* Renamed "decodePica_array()" to "decodePicaArray()" in class
* "PicaRecord".
* 20100113: Added comments. Added further mappings in "getArrayNice()".
* 20100112: Added further mappings in "getArrayNice()".
* Extended types for monographies.
* 20100111: Added function "getOpenUrlKev()" to class "Picappn".
* Removed functions "getKeysText()" and "getKeysBibTex()" from
* class "Picappn".
* 20100110: Added input sanitising for $ppn.
* 20100109: Some style improvements, added comments.
* 20091220: Check whether curl-Module is available, if not use
* "file_get_contents()".
* Some minor bugfixes.
* 20091215: Added function "getJson()" to class "Picappn".
* Made ISBN in "getBibTex()" unique.
* Filtered some characters in "getArrayNice()".
* 20091214: Added function "convOutputNice()", "getArrayNice()",
* "getBibsonomy()", getKeysText()" and "getKeysBibTex()" to class
* "Picappn".
* Handled empty records for dc and rdf.
* 20091213: Added function "convOutput()" to class "Picappn".
* Defined text-format.
* Defined bibtex-format.
* 20091211: Added function "final_result()".
* 20091210: Put class "Picappn" to PicaRecord.php.
* Ordered functions alphabetically.
* Added functions "getArray()", "getPlain()" and "getText()" to
* class "Picappn".
* Added functions "decodePicaArray()", "getArray()" and
* "getPlain()" to class "PicaRecord".
* 20091210: Started with Goetz Hatop's version of 2009-12-08.
*/
/*
* Readme
*
* If you are using PHP4 then search for "comment out if using PHP4" and
* comment it out, unClient.php won't work then.
*/
/*
* set some user-defineable variables
*/
// URL-prefix for XML interface
$opac_url = 'http://example.com/DB=1/XML=1.0/PPN?PPN=';
// URL-prefix for Bibsonomy's BibTeX import
$bibsonomy_url = 'http://www.bibsonomy.org/BibtexHandler?requTask=upload&selection=';
// Regex for checking if input is PPN
$pattern_ppn = '/^[0-9]{8}[0-9Xx]$/';
// Array for filtering extracted bibliographic data
$filter_nice = array(
'{' => '',
'}' => ''
);
// Hostname for generating rfr_id for OpenURL
$rfr_id_hostname= 'example.com';
/*
*******************************************************************************
* DO NOT MESS BEHIND THIS LINE *
*******************************************************************************
*/
/*
* class PicaRecord
* represents a bibliographic data record from OCLC/PICA LBS, puts record to a
* XML structure or an array
**/
class PicaRecord {
// 15 dublin core elements http://dublincore.org/documents/dces/
var $contributor, $coverage, $creator, $date, $description, $format;
var $identifier, $language, $publisher, $related, $rights, $source;
var $subject, $title, $type;
// 1 for me
var $signatur;
/*
* constructor
* class PicaRecord
* PHP5 or later should use '__construct()'
**/
function PicaRecord() {
// default values
$this->type = "Text";
$this->rights = "--";
$this->description = "";
}
/*
* private
* class PicaRecord
* make PICA data behave well and convert them to a XML structure
* Used by PicaRecord->getXmlData
**/
function decodePica($str) {
$tag = "";
$res = "";
for ($i=0;$i<=strlen($str)-1;++$i) {
$ch = substr($str,$i,1);
switch (ord($ch)) {
case 31: //information separator one
$ch = substr($str,++$i,1); //new tag ahead
if ($tag!="") {
$res .= "</".$tag.">";
$tag = $this->getTagName($ch);
$res .= "<".$tag.">";
} else {
$tag = $this->getTagName($ch);
$res .= "<".$tag.">";
}
break;
case 30: //information separator two, another field to follow
$res .= "</".$tag.">\n";
$tag = "";
break;
case 226: //PICA two byte char accent like "é";
$ch = substr($str,++$i,1); // read one char ahead
$res .= $this->getCode2($ch);
break;
default:
$res .= $this->getCode($ch);
break;
} //switch
}
$res .= "</".$tag.">";
// return result
return $res;
}
/*
* private
* class PicaRecord
* make PICA data behave well and put them to an array
* Used by PicaRecord->getArray
**/
function decodePicaArray($str) {
$tag = "";
$res = "";
for ($i=0;$i<=strlen($str)-1;++$i) {
$ch = substr($str,$i,1);
switch (ord($ch)) {
case 31: //information separator one
$ch = substr($str,++$i,1); //new tag ahead
$tag = $this->getTagName($ch);
$res[$tag] = "";
break;
case 30: //information separator two, another field to follow
break;
case 226: //PICA two byte char accent like "é";
$ch = substr($str,++$i,1); // read one char ahead
$res[$tag] .= $this->getCode2($ch);
break;
default:
$res[$tag] .= $this->getCode($ch);
break;
} //switch
}
// return result
return $res;
}
/*
* public
* class PicaRecord
* transform raw PICA data to array
* Used by Picappn->getArray
**/
function getArray($str) {
// PICA record separator is ascii record separator
$lines = explode(chr(30), $str);
$res = "";
foreach ($lines as $line) {
$in1 = ltrim($line);
$ch1 = substr($in1,1,1);
// first char between 0-9
if (ord($ch1) >47 && ord($ch1)<58) {
$pos = strpos($in1, ' ');
$key = substr($in1,0,$pos);
$val = substr($in1,$pos+1);
$val = $this->decodePicaArray($val);
$pica_array[$key] = $val;
} else {
// not valid
}
}
$res = $pica_array;
// return result
return $res;
}
/*
* public
* class PicaRecord
* return bibliographic data in array with speaking keys
* Used by Picappn->{getBibTex,getCsv,getOpenUrlKev,getText}
**/
function getArrayNice($array_raw) {
// if $array_raw is empty just return
if (empty($array_raw)) return "";
// make variable name handier
$record = $array_raw;
// get global, user-defineable variable $filter_nice
global $filter_nice;
// type
$res['type'] = strtr($record['002@']['x0'], $filter_nice);
$res['_bibtex']['type'] = '';
$res['_openurlkev']['type'] = 'rft.genre';
$res['_text']['type'] = 'Art';
// type w/o kind of record
$res['twokr'] = substr($res['type'], 0, 2);
$res['_bibtex']['twokr'] = '';
$res['_openurlkev']['twokr'] = '';
$res['_text']['twokr'] = '';
// author
$res['author'] = strtr($record['028A']['x8'], $filter_nice);
$res['author'] = rtrim($res['author']);
$res['_bibtex']['author'] = ' author';
$res['_openurlkev']['author'] = 'rft.au';
$res['_text']['author'] = 'Autor';
// editor
$res['editor'] = strtr($record['028C']['x8'], $filter_nice);
$res['editor'] = rtrim($res['editor']);
$res['_bibtex']['editor'] = ' editor';
$res['_openurlkev']['editor'] = 'rft.au';
$res['_text']['editor'] = 'Herausgeber';
// title
$res['title'] = strtr($record['021A']['a'], $filter_nice);
$res['_bibtex']['title'] = ' title';
$res['_openurlkev']['title'] = 'rft.title';
$res['_text']['title'] = 'Titel';
// series
if ((!empty($record['036F']['x8'])) || (!empty($record['036F']['l']))) {
$res['series'] = strtr($record['036F']['x8'], $filter_nice)." ".
strtr($record['036F']['l'], $filter_nice);
}
$res['_bibtex']['series'] = ' series';
$res['_openurlkev']['series'] = 'rft.series';
$res['_text']['series'] = 'Schriftenreihe';
// address, especially city
$res['address'] = strtr($record['033A']['p'], $filter_nice);
$res['_bibtex']['address'] = ' address';
$res['_openurlkev']['address'] = 'rft.place';
$res['_text']['address'] = 'Ort';
// publisher
$res['publisher'] = strtr($record['033A']['n'], $filter_nice);
$res['_bibtex']['publisher'] = ' publisher';
$res['_openurlkev']['publisher'] = 'rft.pub';
$res['_text']['publisher'] = 'Verlag';
// edition
$res['edition'] = strtr($record['032@']['a'], $filter_nice);
$res['_bibtex']['edition'] = ' edition';
$res['_openurlkev']['edition'] = 'rft.edition';
$res['_text']['edition'] = 'Auflage';
// year
$res['year'] = strtr($record['011@']['a'], $filter_nice);
$res['_bibtex']['year'] = ' year';
$res['_openurlkev']['year'] = 'rft.date';
$res['_text']['year'] = 'Jahr';
// Erscheinungsverlauf
$res['everlauf'] = strtr($record['031@']['a'], $filter_nice);
$res['_bibtex']['everlauf'] = '';
$res['_openurlkev']['everlauf'] = '';
$res['_text']['everlauf'] = 'Erscheinungsverlauf';
// pages
$res['pages'] = strtr($record['034D']['a'], $filter_nice);
$res['_bibtex']['pages'] = '';
$res['_openurlkev']['pages'] = 'rft.pages';
$res['_text']['pages'] = 'Umfang';
// ISBNs
$res['isbn10'] = strtr($record['004A']['x0'], $filter_nice);
$res['_bibtex']['isbn10'] = ' isbn';
$res['_openurlkev']['isbn10'] = 'rft.isbn';
$res['_text']['isbn10'] = 'ISBN-10';
$res['isbn13'] = strtr($record['004A']['A'], $filter_nice);
$res['_bibtex']['isbn13'] = ' isbn';
$res['_openurlkev']['isbn13'] = 'rft.isbn';
$res['_text']['isbn13'] = 'ISBN-13';
// ISSN
$res['issn'] = strtr($record['005A']['x0'], $filter_nice);
$res['_bibtex']['issn'] = ' issn';
$res['_openurlkev']['issn'] = 'rft.issn';
$res['_text']['issn'] = 'ISSN';
// DNB Number
$res['dnb_no'] = strtr($record['006G']['x0'], $filter_nice);
$res['_bibtex']['dnb_no'] = '';
$res['_openurlkev']['dnb_no'] = '';
$res['_text']['dnb_no'] = 'DNB-Nummer';
// OCLC Number
$res['oclc_no'] = strtr($record['003O']['x0'], $filter_nice);
$res['_bibtex']['oclc_no'] = '';
$res['_openurlkev']['oclc_no'] = '';
$res['_text']['oclc_no'] = 'OCLC-Nummer';
// Foreign Data Identification Number
$res['fdin'] = strtr($record['007I']['x0'], $filter_nice);
$res['_bibtex']['fdin'] = '';
$res['_openurlkev']['fdin'] = '';
$res['_text']['fdin'] = 'Fremddaten-Identifikationsnummer';
// ZDB identification number
$res['zdb_id'] = strtr($record['007A']['x0'], $filter_nice);
$res['_bibtex']['zdb_id'] = '';
$res['_openurlkev']['zdb_id'] = '';
$res['_text']['zdb_id'] = 'ZDB-ID';
// PPN
$res['ppn'] = strtr($record['003@']['x0'], $filter_nice);
$res['_bibtex']['ppn'] = ' note';
$res['_openurlkev']['ppn'] = '';
$res['_text']['ppn'] = 'PPN';
// Link
$res['link'] = strtr($record['009Q']['u'], $filter_nice);
$res['_bibtex']['link'] = 'URL';
$res['_openurlkev']['link'] = '';
$res['_text']['link'] = 'Link';
// Table of Contents
$res['toc'] = strtr($record['009P']['u'], $filter_nice);
$res['_bibtex']['toc'] = '';
$res['_openurlkev']['toc'] = '';
$res['_text']['toc'] = 'Inhaltsverzeichnis';
// DDC
$res['ddc'] = strtr($record['045B']['a'], $filter_nice);
$res['_bibtex']['ddc'] = '';
$res['_openurlkev']['ddc'] = '';
$res['_text']['ddc'] = 'DDC';
// RVK
$res['rvk'] = strtr($record['045Z']['a'], $filter_nice);
$res['_bibtex']['rvk'] = 'keywords';
$res['_openurlkev']['rvk'] = '';
$res['_text']['rvk'] = 'rvk';
// EZB link
$res['ezb_link'] = strtr($record['209S/01']['u'], $filter_nice);
$res['_bibtex']['ezb_link'] = ' url';
$res['_openurlkev']['ezb_link'] = '';
$res['_text']['ezb_link'] = 'EZB-Link';
// return result
return $res;
}
/*
* private
* class PicaRecord
* recode PICA charset
* Used by PicaRecord->{decodePica,decodePicaArray}
**/
function getCode($ch) {
$xx = ord($ch);
switch($xx) {
//case 30: return "\n"; //information separator two
//case 31: return "::"; //information separator one
case 10: return "\n"; // ascii line feed
// case 60: return "[";
case 60: return "<";
// case 62: return "]";
case 62: return ">";
case 64: return ""; // @ PICA no sort sign
case 209: return "ä";
case 210: return "ö";
case 211: return "ü";
case 216: return "ß";
case 193: return "Ä";
case 194: return "Ö";
case 195: return "Ü";
default:
if ($xx<30 || $xx>128) {
return "[".$xx."]";
}
return $ch;
}
}
/*
* private
* class PicaRecord
* not complete set of double byte PICA characters started with
* an accent sign
* Used by PicaRecord->{decodePica,decodePicaArray}
**/
function getCode2($ch) {
switch($ch) {
case 'e' : return "é";
case 'u' : return "ú";
case 'a' : return "á";
case 'o' : return "ó";
case 'E' : return "É";
case 'c' : return "ć";
case 's' : return "ś";
case 'z' : return "ś";
default:
return $ch;
}
}
/*
* public
* class PicaRecord
* return simple Dublin Core record from PICA data
* Used by Picappn->getDublinCore
**/
function getDublinCore($str) {
$res = $this->getXmlData($str); //parse dublin core
if (empty($res)) return "";
$res = "<?xml version=\"1.0\" ?>\n";
$res .="<record>\n";
$res .= "<contributor>".$this->contributor."</contributor>\n";
$res .= "<coverage>".$this->coverage."</coverage>\n";
$res .= "<creator>".$this->creator."</creator>\n";
$res .= "<date>".$this->date."</date>\n";
$res .= "<description>".$this->description."</description>\n";
$res .= "<format>".$this->format."</format>\n";
$res .= "<identifier>".$this->identifier."</identifier>\n";
$res .= "<language>".$this->language."</language>\n";
$res .= "<publisher>".$this->publisher."</publisher>\n";
$res .= "<related>".$this->related."</related>\n";
$res .= "<rights>".$this->rights."</rights>\n";
$res .= "<source>".$this->source."</source>\n";
$res .= "<subject>".$this->subject."</subject>\n";
$res .= "<title>".$this->title."</title>\n";
$res .= "<type>".$this->type."</type>\n";
$res .="</record>\n";
// return result
return $res;
}
/*
* public
* class PicaRecord
* transform raw PICA plus to a more readable diagnostic format
* Used by Picappn->getPicaPlus
**/
function getPicaPlus($str) {
$res = $this->transcribe_pica_utf8($str);
$res = $this->transcribe_pica_rec($res);
// return result
return $res;
}
/*
* private
* class PicaRecord
* rename numeric tags not allowed in XML
* Used by PicaRecord->{decodePica,decodePicaArray}
**/
function getTagName($ch) {
if (ord($ch) >47 && ord($ch)<58) {
return "x".$ch;
} else {
return $ch;
}
}
/*
* public
* class PicaRecord
* transform raw PICA data to valid XML
* Used by PicaRecord->getDublinCore,
* Picappn->{getDublinCoreRDF,getPlain,getXmlData}
**/
function getXmlData($str) {
// PICA record separator is ascii record separator
$lines = explode(chr(30), $str);
// define $res
$res = "";
// check each element of array
foreach ($lines as $line) {
$in1 = ltrim($line);
$ch1 = substr($in1,1,1);
// first char between 0-9
if (ord($ch1) >47 && ord($ch1)<58) {
$pos = strpos($in1, ' ');
$key = substr($in1,0,$pos);
$val = substr($in1,$pos+1);
$val = $this->decodePica($val);
//$res .= "[$key] [$val]\n";
$res .= "<field tag=\"$key\">$val</field>\n";
//side effect to scan dublin core elements
$this->readData($key,$val);
} else {
//not valid
}
}
// return result
return $res;
}
/*
* private
* class PicaRecord
* read Dublin Core elements
* Used by PicaRecord->{getXmlData,readXmlData}
**/
function readData($key, $val) {
//switch on first 4 letters to catch 041A/001
switch (substr($key,0,4)) {
case '028C': //Sonstige beteiligte bzw. verantwortliche Personen
$this->contributor .= " ".$this->readTag($val, "x8");
break;
case '201@': //unkown
// The spatial or temporal topic of the resource
// $this->coverage = $this->readTag($val, "v");
break;
case '209S': //unkown. DOI ?
//The spatial or temporal topic of the resource
$this->identifier = $this->readTag($val, "u");
break;
case '028A': //creator
$this->creator = $this->readTag($val, "x8");
break;
case '028B': //2. und weitere Verfasser
// $this->creator .= " ".$this->readTag($val, "x8");
break;
case '011@': //date Erscheinungsjahr
$this->date = $this->readTag($val, "a");
break;
case '004A': //ISBN
$this->identifier = $this->readTag($val, "x0");
break;
case '009P': //Elektronische Adresse der Personen-Website
//related : A related resource.
$this->related = $this->readTag($val, "u");
break;
case '009Q': //Elektronische Adresse der Online-Ressource
//related : A related resource.
$this->related = $this->readTag($val, "u");
break;
case '034I': //format : file format or dimensions of the resource.
$this->format .= " ".$this->readTag($val, "a");
break;
case '034D': //Seitenanzahl
$this->format .= " ".$this->readTag($val, "a");
break;
case '036G': //Ungezählte Schriftenreihen
$this->subject = $this->readTag($val, "a")." ";
break;
case '209A': //Signaturen
$this->signatur = $this->readTag($val, "a");
break;
case '010@': //language
$this->language = $this->readTag($val, "a");
break;
case '033A': //publisher
$pub1 = $this->readTag($val, "p");
$pub2 = $this->readTag($val, "n");
$this->publisher = $pub1." [".$pub2."]";
break;
case '4201': //rights : Information about rights held in and over
$this->rights = $this->readTag($val, "a");
break;
case '4219': //rights : Information about rights held in and over
$this->rights = $this->readTag($val, "a");
break;
case '036D': //nicht dokumentiert: Sammelband Gesamtausgabe
// source : A related resource from which the described is derived.
$this->source = $this->readTag($val, "x8")." ";
break;
case '045B': //DDC
$this->subject = "DDC: ".$this->readTag($val, "a");
break;
case '045Z': //RVK
$this->subject = $this->readTag($val, "a");
break;
case '041A': //unknown
if ($this->description !== "") $this->description .= ", ";
$this->description .= $this->readTag($val, "x8");
break;
case '044A': //unknown
if ($this->description !== "") $this->description .= ", ";
$this->description .= $this->readTag($val, "a");
break;
case '044N': //Maschinell erstellte Indexeintraege
if ($this->description !== "") $this->description .= ", ";
$this->description .= $this->readTag($val, "a");
break;
case '044K': //Einzelschlagwort
if ($this->description !== "") $this->description .= ", ";
$this->description .= $this->readTag($val, "x8");
break;
case '041A': //Blackwell subjects
if ($this->description !== "") $this->description .= ", ";
$this->description .= $this->readTag($val, "x8");
break;
case '021A': //Hauptsachtitel
$this->title = $this->readTag($val, "a");
$subtitle = $this->readTag($val, "d");
if ($subtitle!="") $this->title .= ": ".$subtitle;
break;
case '016A': //Materialspezifische Codes für elektronische Ressourcen
// type The nature or genre of the resource.
$this->type = $this->readTag($val, "a");
break;
default:
break;
}
//return $res;
}
/*
* public
* class PicaRecord
* parse dublin core data
* Used by unClient.php
* **comment out if using PHP4**
**/
function readDublinCore($str) {
$doc = new DomDocument();
$doc -> loadXML($str);
$xp = new DomXPath($doc);
$this->contributor = $xp->query("/record/contributor")->item(0)->nodeValue;
$this->coverage = $xp->query("/record/coverage")->item(0)->nodeValue;
$this->creator = $xp->query("/record/creator")->item(0)->nodeValue;
$this->date = $xp->query("/record/date")->item(0)->nodeValue;
$this->description = $xp->query("/record/description")->item(0)->nodeValue;
$this->format = $xp->query("/record/format")->item(0)->nodeValue;
$this->identifier = $xp->query("/record/identifier")->item(0)->nodeValue;
$this->language = $xp->query("/record/language")->item(0)->nodeValue;
$this->publisher = $xp->query("/record/publisher")->item(0)->nodeValue;
$this->related = $xp->query("/record/related")->item(0)->nodeValue;
$this->rights = $xp->query("/record/rights")->item(0)->nodeValue;
$this->source = $xp->query("/record/source")->item(0)->nodeValue;
$this->subject = $xp->query("/record/subject")->item(0)->nodeValue;
$this->title = $xp->query("/record/title")->item(0)->nodeValue;
$this->type = $xp->query("/record/type")->item(0)->nodeValue;
// return result
return $res;
}
/*
* public
* class PicaRecord
* parse dublin core data
* experimental, does not work, so commented out
* Used by n/a
**/
/*
function readRDF_DC($str) {
$doc = new DomDocument();
$doc -> loadXML($str);
$xp = new DomXPath($doc);
$this->contributor = $xp->query("/rdf/dc:contributor")->item(0)->nodeValue;
$this->coverage = $xp->query("/rdf/dc:coverage")->item(0)->nodeValue;
$this->creator = $xp->query("/rdf/dc:creator")->item(0)->nodeValue;
$this->date = $xp->query("/rdf/dc:date")->item(0)->nodeValue;
$this->description = $xp->query("/rdf/dc:description")->item(0)->nodeValue;
$this->format = $xp->query("/rdf/dc:format")->item(0)->nodeValue;
$this->identifier = $xp->query("/rdf/dc:identifier")->item(0)->nodeValue;
$this->language = $xp->query("/rdf/dc:language")->item(0)->nodeValue;
$this->publisher = $xp->query("/rdf/dc:publisher")->item(0)->nodeValue;
$this->related = $xp->query("/rdf/dc:related")->item(0)->nodeValue;
$this->rights = $xp->query("/rdf/dc:rights")->item(0)->nodeValue;
$this->source = $xp->query("/rdf/dc:source")->item(0)->nodeValue;
$this->subject = $xp->query("/rdf/dc:subject")->item(0)->nodeValue;
$this->title = $xp->query("/rdf/dc:title")->item(0)->nodeValue;
$this->type = $xp->query("/rdf/dc:type")->item(0)->nodeValue;
// return result
return $res;
}
*/
/*
* private
* class PicaRecord
* read tag content from string
* Used by PicaRecord->readData
**/
function readTag($val, $tag) {
$x = strpos($val,"<".$tag.">");
$y = strpos($val,"</".$tag.">");
if ($x===FALSE) return "";
return substr($val,$x+2+strlen($tag),$y-$x-2-strlen($tag));
}
/*
* public
* class PicaRecord
* read XML data
* used by unClient.php
**/
function readXmlData($str) {
$lines = explode("\n", $str);
//$res = "";
foreach ($lines as $line) {
$line = trim($line);
if ($line=="") continue;
$x = strpos($line, "<field tag=");
if ($x!==0) continue;
$y = strpos($line, "\"",12);
$key = substr($line, 12, $y-12);
$z = strpos($line, "</field>");
if ($z===FALSE) continue;
$val = substr($line,$y+2, $z-$y-2);
$this->readData($key, $val);
//$res .= "[$key] [$val]\n";
}
//return $res;
}
/*
* private
* class PicaRecord
* transcribe separators to diagnostic format
* Used by PicaRecord->getPicaPlus
**/
function transcribe_pica_rec($str) {
return strtr( $str, array(
"\x1F" => "$", "\x1E" => "\n", "\x0A" => "\n"
));
}
/*
* private
* class PicaRecord
* PICA charset handling (we want utf8)
* Used by PicaRecord->getPicaPlus
**/
function transcribe_pica_utf8($str) {
return strtr( $str, array(
"\xD1" => "ä", "\xD2" => "ö", "\xD3" => "ü", "\xD8" => "ß",
"\xC1" => "Ä", "\xC2" => "Ö", "\xC3" => "Ü"
));
}
}
/*
* end class PicaRecord
**/
/*
* class Picappn
* get a PICA record via PICA XML web interface, format and return it.
* Supported formats:
* - Array: Picappn->getArray
* - Bibsonomy: Picappn->getBibsonomy
* - BibTex: Picappn->getBibTex
* - CSV: Picappn->getCsv
* - Dublin Core: Picappn->getDublinCore
* - RDF: Picappn->getDublinCoreRDF
* - JSON: Picappn->getJson
* - OpenURL KEV: Picappn->getOpenUrlKev
* - PICA Plus: Picappn->getPicaPlus
* - Plain: Picappn->getPlain
* - Text: Picappn->getText
* - XML: Picappn->getXmlData
**/
class Picappn {
// declare some attributes
var $opac;
var $url;
var $ppn;
var $myself;
// a picarecord
var $prec;
/*
* constructor
* class Picappn
* PHP5 or later should use '__construct()'
**/
function Picappn() {
// get global user-defineable $opac_url
global $opac_url;
// preset some attributes
$this->opac = $opac_url;
$this->ppn = 0;
// instantiate new PicaRecord()
$this->prec = new PicaRecord();
}
/*
* public
* class Picappn
* convert for output using raw array data
* Used by Picappn->{getBibTex,getText}
**/
function convOutput($array,$text,$separator,$category,$subfield,$suffix) {
// check if $array not empty, otherwise just return
if (empty($array)) return "";
// check if $subfield is given, otherwise just return category
if (!empty($subfield)) {
if (empty($array[$category][$subfield])) return "";
$res = $text.$separator.$array[$category][$subfield].$suffix;
} else {
if (empty($array[$category])) return "";
$res = $text.$separator.$array[$category].$suffix;
}
// return result
return $res;
}
/*
* public
* class Picappn
* convert for output using nice array data
* Used by Picappn->{getBibTex,getOpenUrlKev,getText}
**/
function convOutputNice($array_nice,$array_text,$key,$prefix,$suffix) {
// check if $array_nice not empty, otherwise just return
if (empty($array_nice)) return "";
// check if $array_nice[$key] not empty, otherwise just return
if (empty($array_nice[$key])) return "";
// build result
$res = $array_text[$key].$prefix.$array_nice[$key].$suffix;
// return result
return $res;
}
/*
* public
* class Picappn
* return record as Array
* Used by Picappn->{getBibTex,getCsv,getJson,getOpenUrlKev,getText}
**/
function getArray() {
// check if $this->ppn is not the preset value else return emptily
if ($this->ppn == 0) return "";
// build result
$res = $this->getData($this->ppn);
$res = $this->prec->getArray($res);
// return result
return $res;
}
/*
* public
* class Picappn
* return BibTeX record prefixed with $bibsonomy_url from PICA data.
* Used by Bibsonomy.php
**/
function getBibsonomy() {
// check if $this->ppn is not the preset value else return emptily
if ($this->ppn == 0) return "";
// get BibTeX-Record and URL-encode it
$res = $this->getBibTex();
$res = urlencode($res);
/*
* prefix url-encoded BibTeX-Record and prefix it with global,
* user-defineable $bibsonomy_url
**/
global $bibsonomy_url;
$res = $bibsonomy_url.$res;
// return result
return $res;
}
/*
* public
* class Picappn
* Return BibTex record from pica data
* Used by unAPI.php and Picappn->getBibsonomy
**/
function getBibTex() {
// check if $this->ppn is not the preset value else return emptily
if ($this->ppn == 0) return "";
// get pica data as array
$record_raw = $this->getArray($this->ppn);
// transform raw to nice array
$record_nice = $this->prec->getArrayNice($record_raw);
// get keys name from array
$keys_nice = $record_nice['_bibtex'];
// declare $res
$res = "";
// make sure there is only one ISBN, prefer isbn13 to isbn10
if (!empty($record_nice['isbn13'])) unset($record_nice['isbn10']);
/*
* check type and choose right BibTeX-type
* "book" works quite well, "journal" not so
**/
if (preg_match('/^[AO][aeEfF]$/',$record_nice['twokr'])) {
// type: book
$res = "@book {";
// create identifier
$res .= $this->convOutput($record_raw,"","",'003@','x0',"");
$res .= $this->convOutput($record_raw,"","",'011@','a',",\n");
// set the field which are fetched: author et al.
$i = array('author', 'editor', 'title', 'series', 'address', 'publisher',
'edition', 'year', 'isbn10', 'isbn13', 'link');
// fetch them from array, format and output them
foreach ($i as $j) {
$res .= $this->convOutputNice($record_nice,$keys_nice,$j," = {","},\n");
}
// get call number, format and output it