<?php
/* PHP script to index each paragraph of a text file as a Xapian document.
 *
 * Copyright (C) 2007,2009 Olly Betts
 *
 * 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 2 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
 * <https://www.gnu.org/licenses/>.
 */

if (php_sapi_name() != "cli") {
    print "This example script is written to run under the command line ('cli') version of\n";
    print "the PHP interpreter, but you're using the '".php_sapi_name()."' version\n";
    exit(1);
}

if (PHP_MAJOR_VERSION < 8) include "xapian.php";

if ($argc != 2) {
    print "Usage: {$argv[0]} PATH_TO_DATABASE\n";
    exit(1);
}

try {
    // Open the database for update, creating a new database if necessary.
    $database = new XapianWritableDatabase($argv[1], Xapian::DB_CREATE_OR_OPEN);

    $indexer = new XapianTermGenerator();
    $stemmer = new XapianStem("english");
    $indexer->set_stemmer($stemmer);

    $para = '';
    $lines = file("php://stdin");
    foreach ($lines as $line) {
	$line = rtrim($line);
	if ($line == "" && $para != "") {
	    // We've reached the end of a paragraph, so index it.
	    $doc = new XapianDocument();
	    $doc->set_data($para);

	    $indexer->set_document($doc);
	    $indexer->index_text($para);

	    // Add the document to the database.
	    $database->add_document($doc);

	    $para = "";
	} else {
	    if ($para != "") {
		$para .= " ";
	    }
	    $para .= $line;
	}
    }

    // Set the database handle to Null to ensure that it gets closed
    // down cleanly or uncommitted changes may be lost.
    $database = Null;
} catch (Exception $e) {
    print $e->getMessage() . "\n";
    exit(1);
}
?>
