From a8275acf87cf15992e6b89694d6276e0a5e529b9 Mon Sep 17 00:00:00 2001
From: Michael Vogt <mvo@debian.org>
Date: Tue, 18 Aug 2015 20:39:59 +0200
Subject: Add support for "apt-cache showsrc --only-source srcpkgname"

Thanks: Steve Slangasek for the suggestion
Closes: 695633
---
 apt-private/private-cmndline.cc         |  6 +++++-
 cmdline/apt-cache.cc                    |  4 ++++
 doc/apt-cache.8.xml                     |  9 ++++++---
 test/integration/framework              |  3 ++-
 test/integration/test-apt-cache-showsrc | 31 +++++++++++++++++++++++++++++++
 5 files changed, 48 insertions(+), 5 deletions(-)
 create mode 100755 test/integration/test-apt-cache-showsrc

diff --git a/apt-private/private-cmndline.cc b/apt-private/private-cmndline.cc
index 3a1564b23..1072b9a78 100644
--- a/apt-private/private-cmndline.cc
+++ b/apt-private/private-cmndline.cc
@@ -70,7 +70,11 @@ static bool addArgumentsAPTCache(std::vector<CommandLine::Args> &Args, char cons
    {
       addArg('i', "important", "APT::Cache::Important", 0);
    }
-   else if (CmdMatches("gencaches", "showsrc", "showpkg", "stats", "dump",
+   else if (CmdMatches("showsrc"))
+   {
+      addArg(0,"only-source","APT::Cache::Only-Source",0);
+   }
+   else if (CmdMatches("gencaches", "showpkg", "stats", "dump",
 	    "dumpavail", "showauto", "policy", "madison"))
       ;
    else
diff --git a/cmdline/apt-cache.cc b/cmdline/apt-cache.cc
index f7abb823d..050508663 100644
--- a/cmdline/apt-cache.cc
+++ b/cmdline/apt-cache.cc
@@ -1607,6 +1607,10 @@ static bool ShowSrcPackage(CommandLine &CmdL)
       pkgSrcRecords::Parser *Parse;
       unsigned found_this = 0;
       while ((Parse = SrcRecs.Find(*I,false)) != 0) {
+         // SrcRecs.Find() will find both binary and source names
+         if (_config->FindB("APT::Cache::Only-Source", false) == true)
+            if (Parse->Package() != *I)
+               continue;
         cout << Parse->AsStr() << endl;;
         found++;
         found_this++;
diff --git a/doc/apt-cache.8.xml b/doc/apt-cache.8.xml
index a8f1b4586..b649149af 100644
--- a/doc/apt-cache.8.xml
+++ b/doc/apt-cache.8.xml
@@ -135,9 +135,12 @@ Reverse Provides:
      </varlistentry>
      
      <varlistentry><term><option>showsrc</option> <option><replaceable>&synopsis-pkg;</replaceable>…</option></term>
-     <listitem><para><literal>showsrc</literal> displays all the source package records that match
-     the given package names. All versions are shown, as well as all 
-     records that declare the name to be a binary package.</para></listitem>
+     <listitem><para><literal>showsrc</literal> displays all the
+     source package records that match the given package names. All
+     versions are shown, as well as all records that declare the name
+     to be a binary package. Use <option>--only-source</option> to
+     display only source package names.
+     </para></listitem>
      </varlistentry>
      
      <varlistentry><term><option>dump</option></term>
diff --git a/test/integration/framework b/test/integration/framework
index b443f2a7b..d9282eede 100644
--- a/test/integration/framework
+++ b/test/integration/framework
@@ -794,6 +794,7 @@ insertsource() {
 	local ARCH="$3"
 	local VERSION="$4"
 	local DEPENDENCIES="$5"
+        local BINARY="${6:-$NAME}"
 	local ARCHS=""
 	local SPATH="aptarchive/dists/${RELEASE}/main/source"
 	mkdir -p $SPATH
@@ -801,7 +802,7 @@ insertsource() {
 	local DSCFILE="${NAME}_${VERSION}.dsc"
 	local TARFILE="${NAME}_${VERSION}.tar.gz"
 	echo "Package: $NAME
-Binary: $NAME
+Binary: $BINARY
 Version: $VERSION
 Maintainer: Joe Sixpack <joe@example.org>
 Architecture: $ARCH" >> $FILE
diff --git a/test/integration/test-apt-cache-showsrc b/test/integration/test-apt-cache-showsrc
new file mode 100755
index 000000000..319b4f2f2
--- /dev/null
+++ b/test/integration/test-apt-cache-showsrc
@@ -0,0 +1,31 @@
+#!/bin/sh
+set -e
+
+TESTDIR=$(readlink -f $(dirname $0))
+. $TESTDIR/framework
+
+setupenvironment
+configarchitecture "i386"
+
+# we have a foo source package
+insertsource 'unstable' 'foo' 'all' '1.0' '' 'foo-binary'
+
+# and a similar one that builds a foo binary package
+insertsource 'unstable' 'unreleated' 'all' '1.0' '' 'foo'
+
+# just here to workaround the need for a authenticated package
+insertpackage 'unstable' 'workaround' 'all' '1.0'
+
+setupaptarchive
+
+# by default apt-cache showsrc will look into "binary" and "source" names
+# and show all matches
+aptcache showsrc foo > output.txt
+testsuccess grep "Package: foo" output.txt
+testsuccess grep "Package: unreleated" output.txt
+
+# by default apt-cache showsrc will look into "binary" and "source" names
+# and show all matches
+aptcache showsrc --only-source foo > output.txt
+testsuccess grep "Package: foo" output.txt
+testfailure grep "Package: unreleated" output.txt
-- 
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