elimate duplicated code in pkgIndexFile subclasses

Trade deduplication of code for a bunch of new virtuals, so it is
actually visible how the different indexes behave cleaning up the
interface at large in the process.

Git-Dch: Ignore

1 files changed, 7 insertions, 8 deletions

diff --git a/apt-pkg/contrib/fileutl.cc b/apt-pkg/contrib/fileutl.cc
index f40526b5c..3b2e06431 100644
--- a/apt-pkg/contrib/fileutl.cc
+++ b/apt-pkg/contrib/fileutl.cc
@@ -2115,28 +2115,27 @@ std::string GetTempDir()						/*{{{*/
    return string(tmpdir);
 }
 									/*}}}*/
-FileFd* GetTempFile(std::string const &Prefix, bool ImmediateUnlink)	/*{{{*/
+FileFd* GetTempFile(std::string const &Prefix, bool ImmediateUnlink, FileFd * const TmpFd)	/*{{{*/
 {
    char fn[512];
-   FileFd *Fd = new FileFd();
+   FileFd * const Fd = TmpFd == NULL ? new FileFd() : TmpFd;
 
-   std::string tempdir = GetTempDir();
-   snprintf(fn, sizeof(fn), "%s/%s.XXXXXX", 
+   std::string const tempdir = GetTempDir();
+   snprintf(fn, sizeof(fn), "%s/%s.XXXXXX",
             tempdir.c_str(), Prefix.c_str());
-   int fd = mkstemp(fn);
+   int const fd = mkstemp(fn);
    if(ImmediateUnlink)
       unlink(fn);
-   if (fd < 0) 
+   if (fd < 0)
    {
       _error->Errno("GetTempFile",_("Unable to mkstemp %s"), fn);
       return NULL;
    }
-   if (!Fd->OpenDescriptor(fd, FileFd::WriteOnly, FileFd::None, true))
+   if (!Fd->OpenDescriptor(fd, FileFd::ReadWrite, FileFd::None, true))
    {
       _error->Errno("GetTempFile",_("Unable to write to %s"),fn);
       return NULL;
    }
-
    return Fd;
 }
 									/*}}}*/