Free search software for linux

js-search is a javascript indexing and searching.

A client-side library for building a simple inverted index, and searching it.

You can download the source code from SVN with the following command:

svn checkout http://js-search.googlecode.com/svn/trunk/ js-search

pro-search is a crawler for FTP servers, SMB shares, HTTP servers, and DC++ networks.

WWW::Search is a collection of Perl modules which provide an API to WWW search engines like WebCrawler, AltaVista, Hotbot, Lycos and so on. Currently WWW::Search includes back-ends for variations of AltaVista, Lycos, and HotBot.

We include two applications built from this library: AutoSearch (an program to automate tracking of search results over time), and a small demonstration program to drive the library. Back-ends for other search engines and more sophisticated clients are currently under development.

WWW::Search includes AutoSearch, an program to automate web-based searches.

Search::Tools are tools for building search applications.

SYNOPSIS

use Search::Tools;

my $re = Search::Tools->regexp(query => the quick brown fox);

my $snipper = Search::Tools->snipper(query => $re);

my $hiliter = Search::Tools->hiliter(query => $re);

for my $result (@search_results)
{
print $hiliter->light( $snipper->snip( $result->summary ) );
}

Search::Tools is a set of utilities for building search applications. Rather than adhering to a particular search application, the goal of Search::Tools is to provide general-purpose methods for common search application features. Think of Search::Tools like a toolbox rather than a hammer.

Examples include:

Parsing search queries for the meaningful keywords
Rich regular expressions for locating keywords in the original indexed documents
Contextual snippets showing query keywords
Highlighting of keywords in context

Search::Tools is derived from some of the features in HTML::HiLiter and SWISH::HiLiter, but has been re-written with an eye to accomodating more general purpose features.

Search::Dict is a Perl module to search for key in dictionary file.

SYNOPSIS

use Search::Dict;
look *FILEHANDLE, $key, $dict, $fold;

use Search::Dict;
look *FILEHANDLE, $params;

Sets file position in FILEHANDLE to be first line greater than or equal (stringwise) to $key. Returns the new file position, or -1 if an error occurs.

The flags specify dictionary order and case folding:

If $dict is true, search by dictionary order (ignore anything but word characters and whitespace). The default is honour all characters.

If $fold is true, ignore case. The default is to honour case.

If there are only three arguments and the third argument is a hash reference, the keys of that hash can have values dict, fold, and comp or xfrm (see below), and their correponding values will be used as the parameters.

If a comparison subroutine (comp) is defined, it must return less than zero, zero, or greater than zero, if the first comparand is less than, equal, or greater than the second comparand.

If a transformation subroutine (xfrm) is defined, its value is used to transform the lines read from the filehandle before their comparison.

Search::Binary is a Perl module for generic binary search.

SYNOPSIS

use Seach::Binary;
$pos = binary_search($min, $max, $val, $read, $handle, [$size]);

binary_search implements a generic binary search algorithm returning the position of the first record whose index value is greater than or equal to $val. The search routine does not define any of the terms position, record or index value, but leaves their interpretation and implementation to the user supplied function &$read(). The only restriction is that positions must be integer scalars.

During the search the read function will be called with three arguments: the input parameters $handle and $val, and a position. If the position is not undef, the read function should read the first whole record starting at or after the position; otherwise, the read function should read the record immediately following the last record it read. The search algorithm will guarantee that the first call to the read function will not be with a position of undef. The read function needs to return a two element array consisting of the result of comparing $val with the index value of the read record and the position of the read record. The comparison value must be positive if $val is strictly greater than the index value of the read record, 0 if equal, and negative if strictly less. Furthermore, the returned position value must be greater than or equal to the position the read function was called with.

The input parameters $min and $max are positions and represents the extent of the search. Only records which begin at positions within this range (inclusive) will be searched. Moreover, $min must be the starting position of a record. If present $size is a difference between positions and determines when the algorithms switches to a sequential search. $val is an index value. The value of $handle is of no consequence to the binary search algorithm; it is merely passed as a convenience to the read function.

Archive Search is an extension which displays an archived versions of the webpage.

Displays an archived versions of the webpage.

First click: Internet Archive
Second click: Google cache
Third click: Yahoo
Fourth click: MSN

Yahoo::Search is a Perl interface to the Yahoo! Search public API.

The following search spaces are supported:

Doc
Common web search for documents (html, pdf, doc, ...), including Y!Q contextual search.

Image
Image search (jpeg, png, gif, ...)

Video
Video file search (avi, mpeg, realmedia, ...)

News
News article search

Local
Yahoo! Local area (ZIP-code-based Yellow-Page like search)

Terms
A pseudo-search to report the important search terms from the provided content or content+query.

Spell
A pseudo-search to fetch a "did you mean?" spelling suggestion for a search term.

Related
A pseudo-search to fetch "also try" related-searches for a search term.

(Note: what this Perl API calls "Doc" Search is what Yahoo! calls "Web" Search. But gee, arent all web searches "Web" search, including Image/News/Video/etc?)

Yahoo!s raw API, which this package uses, is described at:

http://developer.yahoo.net/