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<?php
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// $Id: AmazonSearchEngine.class.inc,v 1.2 2005/08/02 20:10:35 nsk Exp $
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/*
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This file is free for anyone to use or modify as they wish.
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Author: Simon Willison, July 2002
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See http://scripts.incutio.com/
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*/
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class AmazonSearchEngine {
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var $server = 'xml.amazon.com';
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var $server_xml_url;
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var $search;
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var $dev_token;
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var $associates_id;
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var $type = 'lite';
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var $version;
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var $results; // Array of results
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var $xml_format;
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var $xml_content;
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var $totalResults = 0;
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var $_parser; // The XML parser
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var $_currentResult;
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var $_grabtags; // Tags to grab the contents of
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var $_currentTagContents;
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function AmazonSearchEngine($dev_token, $associates_id = 'none', $version = '1.0', $atype = 'lite', $f = 'xml') {
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$this->dev_token = $dev_token;
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$this->associates_id = $associates_id;
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$this->version = $version;
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if ($this->version == '1.0') {
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$this->server_xml_url = 'onca/xml';
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} else if ($this->version == '2.0') {
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$this->server_xml_url = 'onca/xml2';
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}
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else if ($this->version == "3.0") {
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$this->server_xml_url = "onca/xml3";
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}
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$this->type = $atype;
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$this->xml_format = $f;
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$this->results = array();
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$this->_grabtags = array(
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'Asin', 'ProductName', 'Catalog', 'ErrorMsg',
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'Description', 'ReleaseDate', 'Manufacturer', 'ImageUrlSmall',
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'ImageUrlMedium', 'ImageUrlLarge', 'ListPrice', 'OurPrice',
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'UsedPrice', 'Author', 'Artist', 'Rating', 'Summary', 'Comment',
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'Product', 'Feature', 'TotalResults', 'Track', 'ByArtist'
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);
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}
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function doFetch($url) {
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$fp = fsockopen($this->server, 80);
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fputs($fp, "GET " . $url . " HTTP/1.0\n\n");
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$body = false;
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$xml = '';
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while(($line = fgets($fp, 1024))) {
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$body = $body || trim($line) == "";
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if($body) {
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$xml .= $line;
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}
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}
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fclose($fp);
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return trim($xml);
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}
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function doSearch($url) {
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if(file_exists('includes/Snoopy.class.inc')) {
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$s = new Snoopy;
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$s->fetch($url);
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$contents = $s->results;
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} else {
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$contents = $this->doFetch($url);
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}
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$this->xml_content = $contents;
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if ($this->xml_format == 'xml') {
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$this->_parser = xml_parser_create('UTF-8');
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xml_parser_set_option($this->_parser, XML_OPTION_CASE_FOLDING, false);
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xml_set_object($this->_parser, $this);
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xml_set_element_handler($this->_parser, 'tag_open', 'tag_close');
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xml_set_character_data_handler($this->_parser, 'cdata');
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if (!xml_parse($this->_parser, $contents)) {
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die(sprintf('XML error: %s at line %d',
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xml_error_string(xml_get_error_code($this->_parser)),
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xml_get_current_line_number($this->_parser)));
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}
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xml_parser_free($this->_parser);
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}
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}
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function getVersionParam() {
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$version_text = ($this->version == '1.0') ? 'v=1.0&' : '';
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return $version_text;
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}
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function getSortParam($rsort = '') {
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$sort_text = ($rsort == '') ? '' : (($this->version == '2.0') ? "&sort=$rsort" : '');
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return $sort_text;
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}
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function getBaseAmazonURL() {
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$version_text = $this->getVersionParam();
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$url = "http://{$this->server}/{$this->server_xml_url}?{$version_text}t={$this->associates_id}&dev-t={$this->dev_token}";
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return $url;
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}
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function getFinalAmazonURL($url) {
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return "{$url}&f={$this->xml_format}";
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}
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function searchTerm($term, $mode = 'books', $page = 1, $rsort = '') {
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$sort_text = $this->getSortParam($rsort);
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$url = $this->getBaseAmazonURL();
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$url .= "&KeywordSearch=".urlencode($term)."&mode=$mode&type={$this->type}&page=$page{$sort_text}";
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$this->doSearch($this->getFinalAmazonURL($url));
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}
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function searchISBN($isbn) {
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$isbns = is_array($isbn) ? strtoupper(implode(",", $isbn)) : strtoupper($isbn);
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$sort_text = $this->getSortParam($rsort);
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$url = $this->getBaseAmazonURL();
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$url .= "&AsinSearch=$isbns";
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$url .= "&type={$this->type}";
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$this->doSearch($this->getFinalAmazonURL($url));
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}
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function searchAuthor($author, $page = 1, $rsort = '') {
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$sort_text = $this->getSortParam($rsort);
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$url = $this->getBaseAmazonURL();
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$url .= "&AuthorSearch=".urlencode($author)."&mode=books";
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$url .= "&type={$this->type}&page=$page{$sort_text}";
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$this->doSearch($this->getFinalAmazonURL($url));
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}
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function searchRelated($asin, $page = 1) {
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$sort_text = $this->getSortParam($rsort);
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$url = $this->getBaseAmazonURL();
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$url .= "&SimilaritySearch=$asin";
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$url .= "&type={$this->type}&page=$page";
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$this->doSearch($this->getFinalAmazonURL($url));
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}
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/* extra functions */
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function browseNode($browsenode, $mode = 'books', $page = 1, $rsort = '') {
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$sort_text = $this->getSortParam($rsort);
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$url = $this->getBaseAmazonURL();
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$url .= "&BrowseNodeSearch=$browsenode&mode=$mode";
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$url .= "&type={$this->type}&page=$page{$sort_text}";
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$this->doSearch($this->getFinalAmazonURL($url));
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}
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function listMania($listid, $page = 1, $rsort = '') {
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$sort_text = $this->getSortParam($rsort);
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$url = $this->getBaseAmazonURL();
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$url .= "&ListManiaSearch=$listid";
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$url .= "&type={$this->type}";
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$this->doSearch($this->getFinalAmazonURL($url));
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}
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function searchAsin($asin, $page = 1) {
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$asins = is_array($asin)?strtoupper(implode(",", $asin)):strtoupper($asin);
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$sort_text = $this->getSortParam($rsort);
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$url = $this->getBaseAmazonURL();
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$url .= "&AsinSearch=$asins";
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$url .= "&type={$this->type}";
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$this->doSearch($this->getFinalAmazonURL($url));
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}
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function searchUPC($upc, $mode = 'music', $page = 1, $rsort = '') {
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$upcs = is_array($upc)?implode(",", $upc):$upc;
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$sort_text = $this->getSortParam($rsort);
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$url = $this->getBaseAmazonURL();
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$url .= "&UpcSearch=$upcs&mode=$mode";
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$url .= "&type={$this->type}";
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$this->doSearch($this->getFinalAmazonURL($url));
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}
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function searchWishList($wl, $page = 1, $rsort = '') {
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if ($this->version == '2.0') {
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$sort_text = $this->getSortParam($rsort);
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$url = $this->getBaseAmazonURL();
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$url .= "WishlistSearch=$wl&type={$this->type}";
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$this->doSearch($this->getFinalAmazonURL($url));
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}
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}
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/* end special functions */
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function tag_open($parser, $tag, $attributes)
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{
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$this->_currentTagContents = '';
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if ($tag == 'Details') {
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// We've hit a new result
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$this->_currentResult = new AmazonProduct;
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$this->_currentResult->url = $attributes['url'];
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}
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if (in_array($tag, $this->_grabtags)) {
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$this->_currentTag = $tag;
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} else {
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$this->_currentTag = '';
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}
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}
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function cdata($parser, $cdata)
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{
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if ($this->_currentTag) {
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if (!empty($this->_currentTagContents)) {
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$this->_currentTagContents .= $cdata;
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} else {
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$this->_currentTagContents = $cdata;
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}
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}
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}
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function tag_close($parser, $tag)
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{
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switch ($tag) {
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case 'Details':
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// We've hit the end of the result
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$this->results[] = $this->_currentResult;
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break;
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case 'Author':
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$this->_currentResult->Authors[] = $this->_currentTagContents;
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break;
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case 'Artist':
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$this->_currentResult->Artists[] = $this->_currentTagContents;
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break;
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case 'Rating':
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$this->_currentResult->ReviewRating[] = $this->_currentTagContents;
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break;
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case 'Summary':
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$this->_currentResult->ReviewSummary[] = $this->_currentTagContents;
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break;
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case 'Comment':
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$this->_currentResult->ReviewComment[] = $this->_currentTagContents;
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break;
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case 'Product':
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$this->_currentResult->SimilarProducts[] = $this->_currentTagContents;
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break;
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case 'Feature':
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$this->_currentResult->Features[] = $this->_currentTagContents;
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break;
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case 'TotalResults':
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$this->totalResults = $this->_currentTagContents;
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break;
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case 'Track':
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$this->_currentResult->Tracks[] = $this->_currentTagContents;
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break;
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case 'ByArtist':
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$this->_currentResult->ByArtist[] = $this->_currentTagContents;
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break;
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default:
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if (in_array($tag, $this->_grabtags)) {
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$this->_currentResult->$tag = $this->_currentTagContents;
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}
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}
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}
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}
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?>
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