[feat] engine: implementation of void linux packages

Co-authored-by: Markus Heiser <markus.heiser@darmarit.de>

docs/dev/engines/online/void.rst

@@ -0,0 +1,13 @@
+.. _voidlinux engine:
+
+==========================
+Void Linux binary packages
+==========================
+
+.. contents:: Contents
+   :depth: 2
+   :local:
+   :backlinks: entry
+
+.. automodule:: searx.engines.voidlinux
+  :members:

searx/engines/voidlinux.py

@@ -0,0 +1,91 @@
+# SPDX-License-Identifier: AGPL-3.0-or-later
+# lint: pylint
+"""SearXNG engine for `Void Linux binary packages`_.  Void is a general purpose
+operating system, based on the monolithic Linux kernel. Its package system
+allows you to quickly install, update and remove software; software is provided
+in binary packages or can be built directly from sources with the help of the
+XBPS source packages collection.
+
+.. _Void Linux binary packages: https://voidlinux.org/packages/
+
+"""
+
+import re
+
+from urllib.parse import quote_plus
+from searx.utils import humanize_bytes
+
+about = {
+    'website': 'https://voidlinux.org/packages/',
+    'wikidata_id': 'Q19310966',
+    'use_official_api': True,
+    'official_api_documentation': None,
+    'require_api_key': False,
+    'results': 'JSON',
+}
+
+categories = ['packages', 'it']
+
+base_url = "https://xq-api.voidlinux.org"
+pkg_repo_url = "https://github.com/void-linux/void-packages"
+
+void_arch = 'x86_64'
+"""Default architecture to search for.  For valid values see :py:obj:`ARCH_RE`"""
+
+ARCH_RE = re.compile('aarch64-musl|armv6l-musl|armv7l-musl|x86_64-musl|aarch64|armv6l|armv7l|i686|x86_64')
+"""Regular expresion that match a architecture in the query string."""
+
+
+def request(query, params):
+    arch_path = ARCH_RE.search(query)
+    if arch_path:
+        arch_path = arch_path.group(0)
+        query = query.replace(arch_path, '').strip()
+    else:
+        arch_path = void_arch
+
+    params['url'] = f"{base_url}/v1/query/{arch_path}?q={quote_plus(query)}"
+    return params
+
+
+def response(resp):
+    """
+    At Void Linux, several packages sometimes share the same source code
+    (template) and therefore also have the same URL.  Results with identical
+    URLs are merged as one result for SearXNG.
+    """
+
+    packages = {}
+    for result in resp.json()['data']:
+
+        # 32bit and dbg packages don't have their own package templates
+        github_slug = re.sub(r"-(32bit|dbg)$", "", result['name'])
+        pkg_url = f"{pkg_repo_url}/tree/master/srcpkgs/{github_slug}"
+
+        pkg_list = packages.get(pkg_url, [])
+        pkg_list.append(
+            {
+                'title': result['name'],
+                'content': f"{result['short_desc']} - {humanize_bytes(result['filename_size'])}",
+                'package_name': result['name'],
+                'version': f"v{result['version']}_{result['revision']}",
+                'tags': result['repository'],
+            }
+        )
+        packages[pkg_url] = pkg_list
+
+    results = []
+    for pkg_url, pkg_list in packages.items():
+
+        results.append(
+            {
+                'url': pkg_url,
+                'template': 'packages.html',
+                'title': ' | '.join(x['title'] for x in pkg_list),
+                'content': pkg_list[0]['content'],
+                'package_name': ' | '.join(x['package_name'] for x in pkg_list),
+                'version': pkg_list[0]['version'],
+                'tags': [x['tags'] for x in pkg_list],
+            }
+        )
+    return results

searx/settings.yml

@@ -2147,6 +2147,11 @@ engines:
     engine: tootfinder
     shortcut: toot
 
+  - name: voidlinux
+    engine: voidlinux
+    shortcut: void
+    disabled: true
+
   - name: wallhaven
     engine: wallhaven
     # api_key: abcdefghijklmnopqrstuvwxyz