Apply patch from Sami Liedes <sliedes@cc.hut.fi> to avoid unecessary

[apt.git] / apt-pkg / contrib / md5.cc

diff --git a/apt-pkg/contrib/md5.cc b/apt-pkg/contrib/md5.cc
index fded5c86452a838394915177b601e465a8486a97..2bfd70f1b88c97db1bcec38ced081c52742f357b 100644 (file)
--- a/apt-pkg/contrib/md5.cc
+++ b/apt-pkg/contrib/md5.cc
@@ -35,10 +35,6 @@
    ##################################################################### */
                                                                        /*}}}*/
 // Include Files                                                       /*{{{*/
-#ifdef __GNUG__
-#pragma implementation "apt-pkg/md5.h"
-#endif
-
 #include <apt-pkg/md5.h>
 #include <apt-pkg/strutl.h>
 
@@ -48,6 +44,7 @@
 #include <inttypes.h>
 #include <config.h>
 #include <system.h>
+
                                                                        /*}}}*/
 
 // byteSwap - Swap bytes in a buffer                                   /*{{{*/
@@ -297,11 +294,16 @@ bool MD5Summation::AddFD(int Fd,unsigned long Size)
 {
    unsigned char Buf[64*64];
    int Res = 0;
-   while (Size != 0)
+   int ToEOF = (Size == 0);
+   while (Size != 0 || ToEOF)
    {
-      Res = read(Fd,Buf,min(Size,(unsigned long)sizeof(Buf)));
-      if (Res < 0 || (unsigned)Res != min(Size,(unsigned long)sizeof(Buf)))
-        return false;
+      unsigned n = sizeof(Buf);
+      if (!ToEOF) n = min(Size,(unsigned long)n);
+      Res = read(Fd,Buf,n);
+      if (Res < 0 || (!ToEOF && (unsigned) Res != n)) // error, or short read
+         return false;
+      if (ToEOF && Res == 0) // EOF
+         break;
       Size -= Res;
       Add(Buf,Res);
    }