try version match in FindSrc first exact than fuzzy (LP: #551178)

diff --git a/cmdline/apt-get.cc b/cmdline/apt-get.cc
index 7875ae2..5af2dca 100644 (file)
--- a/cmdline/apt-get.cc
+++ b/cmdline/apt-get.cc
@@ -1291,12 +1291,26 @@ pkgSrcRecords::Parser *FindSrc(const char *Name,pkgRecords &Recs,
    {
       if(VerTag.empty() == false || DefRel.empty() == false) 
       {
+        bool fuzzy = false;
         // we have a default release, try to locate the pkg. we do it like
         // this because GetCandidateVer() will not "downgrade", that means
         // "apt-get source -t stable apt" won't work on a unstable system
-        for (pkgCache::VerIterator Ver = Pkg.VersionList();
-             Ver.end() == false; Ver++) 
+        for (pkgCache::VerIterator Ver = Pkg.VersionList();; Ver++)
         {
+           // try first only exact matches, later fuzzy matches
+           if (Ver.end() == true)
+           {
+              if (fuzzy == true)
+                 break;
+              fuzzy = true;
+              Ver = Pkg.VersionList();
+           }
+           // We match against a concrete version (or a part of this version)
+           if (VerTag.empty() == false &&
+               (fuzzy == true || Cache.VS().CmpVersion(VerTag, Ver.VerStr()) != 0) && // exact match
+               (fuzzy == false || strncmp(VerTag.c_str(), Ver.VerStr(), VerTag.size()) != 0)) // fuzzy match
+              continue;
+
            for (pkgCache::VerFileIterator VF = Ver.FileList();
                 VF.end() == false; VF++) 
            {
@@ -1309,10 +1323,6 @@ pkgSrcRecords::Parser *FindSrc(const char *Name,pkgRecords &Recs,
                   pkgCache::Flag::NotSource && Pkg.CurrentVer() != Ver)
                  continue;
 
-              // We match against a concrete version (or a part of this version)
-              if (VerTag.empty() == false && strncmp(VerTag.c_str(), Ver.VerStr(), VerTag.size()) != 0)
-                 continue;
-
               // or we match against a release
               if(VerTag.empty() == false ||
                  (VF.File().Archive() != 0 && VF.File().Archive() == DefRel) ||
@@ -1323,10 +1333,9 @@ pkgSrcRecords::Parser *FindSrc(const char *Name,pkgRecords &Recs,
                  // no SourcePkg name, so it is the "binary" name
                  if (Src.empty() == true)
                     Src = TmpSrc;
-                 // no Version, so we try the Version of the SourcePkg -
-                 // and after that the version of the binary package
-                 if (VerTag.empty() == true)
-                    VerTag = Parse.SourceVer();
+                 // the Version we have is possibly fuzzy or includes binUploads,
+                 // so we use the Version of the SourcePkg (empty if same as package)
+                 VerTag = Parse.SourceVer();
                  if (VerTag.empty() == true)
                     VerTag = Ver.VerStr();
                  break;
@@ -1390,7 +1399,8 @@ pkgSrcRecords::Parser *FindSrc(const char *Name,pkgRecords &Recs,
         const string Ver = Parse->Version();
 
         // Ignore all versions which doesn't fit
-        if (VerTag.empty() == false && strncmp(VerTag.c_str(), Ver.c_str(), VerTag.size()) != 0)
+        if (VerTag.empty() == false &&
+            Cache.VS().CmpVersion(VerTag, Ver) != 0) // exact match
            continue;
 
         // Newer version or an exact match? Save the hit

diff --git a/debian/changelog b/debian/changelog
index bd1fda3..61a4dc6 100644 (file)
--- a/debian/changelog
+++ b/debian/changelog
@@ -43,6 +43,7 @@ apt (0.7.26) UNRELEASED; urgency=low
   * cmdline/apt-get.cc:
     - add a --only-upgrade flag to install command (Closes: #572259)
     - fix memory leaks in error conditions in DoSource()
+    - try version match in FindSrc first exact than fuzzy (LP: #551178)
   * apt-pkg/contrib/cmndline.cc:
     - save Commandline in Commandline::AsString for logging
   * apt-pkg/deb/debversion.cc: