From af674d82d5cd36e22223ec49675d32adad07e0a9 Mon Sep 17 00:00:00 2001
From: Julian Andres Klode <julian.klode@canonical.com>
Date: Thu, 15 Aug 2019 13:36:04 +0200
Subject: Add the ?exact-name pattern

The ?exact-name pattern matches the name exactly, there is
no substring matching going on, or any regular expression
or fnmatch magic.
---
 apt-pkg/cachefilter-patterns.cc    |  2 ++
 apt-pkg/cachefilter-patterns.h     | 10 ++++++++++
 doc/apt-patterns.7.xml             |  3 +++
 test/integration/test-apt-patterns |  4 ++++
 4 files changed, 19 insertions(+)

diff --git a/apt-pkg/cachefilter-patterns.cc b/apt-pkg/cachefilter-patterns.cc
index ea35b9c46..f078924ff 100644
--- a/apt-pkg/cachefilter-patterns.cc
+++ b/apt-pkg/cachefilter-patterns.cc
@@ -218,6 +218,8 @@ std::unique_ptr<APT::CacheFilter::Matcher> PatternParser::aPattern(std::unique_p
       return std::make_unique<Patterns::PackageIsConfigFiles>();
    if (node->matches("?essential", 0, 0))
       return std::make_unique<Patterns::PackageIsEssential>();
+   if (node->matches("?exact-name", 1, 1))
+      return std::make_unique<Patterns::PackageHasExactName>(aWord(node->arguments[0]));
    if (node->matches("?false", 0, 0))
       return std::make_unique<APT::CacheFilter::FalseMatcher>();
    if (node->matches("?garbage", 0, 0))
diff --git a/apt-pkg/cachefilter-patterns.h b/apt-pkg/cachefilter-patterns.h
index 17f1fc752..993839425 100644
--- a/apt-pkg/cachefilter-patterns.h
+++ b/apt-pkg/cachefilter-patterns.h
@@ -166,6 +166,16 @@ struct PackageIsEssential : public PackageMatcher
    }
 };
 
+struct PackageHasExactName : public PackageMatcher
+{
+   std::string name;
+   explicit PackageHasExactName(std::string name) : name(name) {}
+   bool operator()(pkgCache::PkgIterator const &Pkg) override
+   {
+      return Pkg.Name() == name;
+   }
+};
+
 struct PackageIsInstalled : public PackageMatcher
 {
    pkgCacheFile *Cache;
diff --git a/doc/apt-patterns.7.xml b/doc/apt-patterns.7.xml
index 11031be95..2eda77b55 100644
--- a/doc/apt-patterns.7.xml
+++ b/doc/apt-patterns.7.xml
@@ -81,6 +81,9 @@
      <varlistentry><term><code>?essential</code></term>
      <listitem><para>Selects packages that have Essential: yes set in their control file.</para></listitem>
      </varlistentry>
+     <varlistentry><term><code>?exact-name(NAME)</code></term>
+     <listitem><para>Selects packages with the exact specified name.</para></listitem>
+     </varlistentry>
      <varlistentry><term><code>?garbage</code></term>
      <listitem><para>Selects packages that can be removed automatically.</para></listitem>
      </varlistentry>
diff --git a/test/integration/test-apt-patterns b/test/integration/test-apt-patterns
index 1efb10d2d..c75793e55 100755
--- a/test/integration/test-apt-patterns
+++ b/test/integration/test-apt-patterns
@@ -125,6 +125,10 @@ conf-only/now 1.0 i386 [residual-config]" apt list '?config-files'
 testsuccessequal "Listing...
 essential/now 1.0 i386 [installed,local]" apt list '?essential'
 
+testsuccessequal "Listing..." apt list '?exact-name(automatic)'
+testsuccessequal "Listing...
+automatic1/now 1.0 i386 [installed,local]" apt list '?exact-name(automatic1)'
+
 testsuccessequal "Listing...
 automatic2/now 1.0 i386 [installed,local]" apt list '?garbage'
 
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