186 lines
6.6 KiB
Markdown
186 lines
6.6 KiB
Markdown
---
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title: OpenSearch
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header-includes:
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- |
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```{=html}
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<link
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rel="search"
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type="application/opensearchdescription+xml"
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title="DuckDuckGo Lite"
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href="./ddglite.xml"
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/>
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<link
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rel="search"
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type="application/opensearchdescription+xml"
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title="DuckDuckGo HTML"
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href="./ddghtml.xml"
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/>
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<link
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rel="search"
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type="application/opensearchdescription+xml"
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title="Mamont"
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href="./mamont.xml"
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/>
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<link
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rel="search"
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type="application/opensearchdescription+xml"
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title="Mamont (English)"
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href="./mamont-int.xml"
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/>
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<link
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rel="search"
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type="application/opensearchdescription+xml"
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title="Veronica-2"
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href="./veronica2.xml"
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/>
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<link
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rel="search"
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type="application/opensearchdescription+xml"
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title="wttr.in"
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href="./wttr.xml"
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/>
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<link
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rel="search"
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type="application/opensearchdescription+xml"
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title="Météociel"
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href="./meteociel.xml"
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/>
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<link
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rel="search"
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type="application/opensearchdescription+xml"
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title="dict.org"
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href="./dict.xml"
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/>
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<link
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rel="search"
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type="application/opensearchdescription+xml"
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title="Internet Archive"
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href="./archive.xml"
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/>
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<link
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rel="search"
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type="application/opensearchdescription+xml"
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title="Wayback Machine"
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href="./wayback.xml"
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/>
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<link
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rel="search"
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type="application/opensearchdescription+xml"
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title="Big Huge Labs Thesaurus"
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href="./words.xml"
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/>
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<link
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rel="search"
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type="application/opensearchdescription+xml"
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title="Alpine packages"
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href="./alpine/packages.xml"
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/>
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<link
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rel="search"
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type="application/opensearchdescription+xml"
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title="Alpine package contents"
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href="./alpine/contents.xml"
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/>
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<link
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rel="search"
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type="application/opensearchdescription+xml"
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title="Alpine flagged packages"
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href="./alpine/flagged.xml"
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/>
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```
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---
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> "We want OpenSearch to do for search what RSS has done for content."
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> —[A9][quote]
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OpenSearch has two meanings, because the preferred way to name anything
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when it comes to computers is to make it as confusing as possible:
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- OpenSearch was a specification for an XML description of search
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engines which was particularly used to allow auto-discovery of search
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engines by web browsers before it got unnecessarily replaced by
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Chrome's WebExtensions.
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- OpenSearch is a search engine software licensed under Apache 2.0.
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The OpenSearch specification used to be hosted by an Amazon subsidiary
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called A9, and you can still see a trace of it in the XML namespace URL:
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`http://a9.com/-/spec/opensearch/1.1/`. It then has been hosted on
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opensearch.org before the domain name got stolen by the search engine
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software.
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- [GitHub repo][github] linked on the Wikipedia page
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with a backup of the OpenSearch site
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- [Latest archived version at OpenSearch][opensearch-spec]
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- [Latest archived version at A9][a9]
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- [Latest archived version of OpenSearch][opensearch]
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(the spec was moved to GitHub before the site died)
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I discovered this specification by trying to find out why the official
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DuckDuckGo Lite and HTML search engines on the SeaMonkey add-ons site
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were not working properly. If you have gone through other articles on
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this wiki you probably already know that if there's an XML somewhere,
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I ought to find or create an XSD for it.
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A developer at Microsoft seemed to have the same mindset as me in 2008
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and [announced an XSD][xsd-blog] on his blog. The linked schema in the
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blog article points to [a file on Windows Live SkyDrive][xsd-skydrive],
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and while the file's listing has been archived, the file itself has not,
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so we are back to square one. So I went ahead and just wrote my own
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XSDs for OpenSearch, including all of its extensions.
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## XSD
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* [OpenSearch 1.1 Draft 6](./opensearch.xsd)
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* [OpenSearch Geo Extension 1.0 Draft 2](./geo.xsd)
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* [OpenSearch Parameter Extension 1.0 Draft 2](./parameters.xsd)
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* [OpenSearch Referrer Extension 1.0 Draft 1](./referrer.xsd)
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* [OpenSearch Relevance Extension 1.0 Draft 1](./relevance.xsd)
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* [OpenSearch Suggestions Extension 1.1 Draft 1](./suggestions.xsd)
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* [OpenSearch Time Extension 1.0 Draft 1](./time.xsd)
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## OpenSearch descriptions
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I wrote some OpenSearch descriptions myself and am hosting them on this
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site. If you are using a browser that supports OpenSearch description
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autodiscovery, you should be able to just click a button near your
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browser's search features to pick between the available search engines.
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Some browsers might even be able to automatically update the files if I
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ever need to change them. If your browser doesn't support
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autodiscovery, well you can just grab the XML files yourself here:
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* [DuckDuckGo Lite](./ddglite.xml)
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* [DuckDuckGo HTML](./ddghtml.xml)
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* [Mamont (Russian)](./mamont.xml) (FTP search engine)
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* [Mamont (English)](./mamont-int.xml) (FTP search engine)
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* [Veronica-2](./veronica2.xml) (Gopher search engine, proxied over HTTP)
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* [wttr.in](./wttr.xml) (weather forecast)
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* [Météociel](./meteociel.xml) (weather forecasts from a French association)
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* [dict.org](./dict.xml) (dictionary)
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* [Internet Archive](./archive.xml)
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* [Wayback Machine](./wayback.xml)
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* [Big Huge Labs Thesaurus](./words.xml)
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* Alpine Linux
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* Packages: [browser-supported](./alpine/packages.xml), [with OpenSearch Parameter](./alpine/packages-param.xml)
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* Package contents: [browser-supported](./alpine/contents.xml), [with OpenSearch Parameter](./alpine/contents-param.xml)
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* Flagged packages: [browser-supported](./alpine/flagged.xml), [with OpenSearch Parameter](./alpine/flagged-param.xml)
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## To-do
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- Try to retrieve all the search engines that were known to A9 and see
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if they are still working, or maybe just document their existence
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<http://web.archive.org/web/20090131091222/http://a9.com/-/opensearch/searches.jsp>
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- Look around the search engine directories that were known to OpenSearch.org
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<http://web.archive.org/web/20120301211959/http://www.opensearch.org/Community/OpenSearch_search_engine_directories>
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- Learn more about the poorly documented Mozilla extensions to
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OpenSearch descriptions such as `Param` and `SearchForm`
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[quote]: http://web.archive.org/web/20050828043300/http://opensearch.a9.com/
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[a9]: http://web.archive.org/web/20060821195444/http://a9.com/-/spec/opensearch/1.1/
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[opensearch]: http://web.archive.org/web/20191007035316/http://www.opensearch.org:80/Home
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[opensearch-spec]: http://web.archive.org/web/20180325164414/http://www.opensearch.org:80/Specifications/OpenSearch/1.1
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[github]: https://github.com/dewitt/opensearch/
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[xsd-blog]: https://weblogs.asp.net/wkriebel/opensearch-xsd
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[xsd-skydrive]: http://web.archive.org/web/20080828085900/http://cid-fd2e2af28bb0e3b9.skydrive.live.com/self.aspx/Public/OpenSearch.xsd
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