108 lines
4.1 KiB
PHP
108 lines
4.1 KiB
PHP
<?php
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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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// Currently only handles 'lite' queries on 'books'
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class AmazonSearchEngine {
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var $server = 'xml.amazon.com';
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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 $results; // Array of results
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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, $associates_id = 'none') {
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$this->dev_token = $dev_token;
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$this->associates_id = $associates_id;
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$this->_parser = xml_parser_create();
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$this->results = array();
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xml_parser_set_option($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($this->_parser, 'cdata');
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$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'
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);
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}
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function doSearch($url) {
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if (function_exists('serendipity_request_url')) {
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$contents = serendipity_request_url($url);
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} else {
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$req = new HTTP_Request($url);
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$req->sendRequest();
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$contents = $req->getResponseBody();
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}
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if (!xml_parse($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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function searchTerm($term, $mode = 'music') {
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$url = "http://{$this->server}/onca/xml3?t={$this->associates_id}&KeywordSearch=$term&mode=$mode";
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$url .= "&f=xml&type={$this->type}&dev-t={$this->dev_token}";
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$this->doSearch($url);
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}
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function searchISBN($isbn) {
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$url = "http://{$this->server}/onca/xml?v=1.0&t={$this->associates_id}&dev-t={$this->dev_token}&AsinSearch=$isbn&type={$this->type}&f=xml";
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$this->doSearch($url);
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}
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function searchAuthor($author) {
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$url = "http://{$this->server}/onca/xml?v=1.0&t={$this->associates_id}&dev-t={$this->dev_token}&AuthorSearch=$author&mode=books&type={$this->type}&f=xml";
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$this->doSearch($url);
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}
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function searchRelated($asin) {
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$url = "http://{$this->server}/onca/xml?v=1.0&t={$this->associates_id}&dev-t={$this->dev_token}&SimilaritySearch=$asin&type={$this->type}&f=xml";
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$this->doSearch($url);
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}
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function tag_open($parser, $tag, $attributes)
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{
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if ($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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$this->_currentTagContents = trim($cdata);
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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[] = $this->_currentTagContents;
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break;
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default:
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if (in_array($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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