X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/74c1e22b4a6b7c8d89e5d563f7a1f48d25b38fef..e426a5ff1cd02797b29f5781be4d6fc8bdf44610:/apt-pkg/deb/debversion.cc

diff --git a/apt-pkg/deb/debversion.cc b/apt-pkg/deb/debversion.cc
index aeee61929..755ffbe96 100644
--- a/apt-pkg/deb/debversion.cc
+++ b/apt-pkg/deb/debversion.cc
@@ -11,9 +11,6 @@
 									/*}}}*/
 // Include Files							/*{{{*/
 #define APT_COMPATIBILITY 986
-#ifdef __GNUG__
-#pragma implementation "apt-pkg/debversion.h"
-#endif
 
 #include <apt-pkg/debversion.h>
 #include <apt-pkg/pkgcache.h>
@@ -59,7 +56,7 @@ int debVersioningSystem::CmpFragment(const char *A,const char *AEnd,
    }
 
    /* Iterate over the whole string
-      What this does is to spilt the whole string into groups of
+      What this does is to split the whole string into groups of
       numeric and non numeric portions. For instance:
          a67bhgs89
       Has 4 portions 'a', '67', 'bhgs', '89'. A more normal:
@@ -140,6 +137,27 @@ int debVersioningSystem::DoCmpVersion(const char *A,const char *AEnd,
    if (rhs == BEnd)
       rhs = B;
    
+   // Special case: a zero epoch is the same as no epoch,
+   // so remove it.
+   if (lhs != A)
+   {
+      for (; *A == '0'; ++A);
+      if (A == lhs)
+      {
+	 ++A;
+	 ++lhs;
+      }
+   }
+   if (rhs != B)
+   {
+      for (; *B == '0'; ++B);
+      if (B == rhs)
+      {
+	 ++B;
+	 ++rhs;
+      }
+   }
+
    // Compare the epoch
    int Res = CmpFragment(A,lhs,B,rhs);
    if (Res != 0)
@@ -172,8 +190,22 @@ int debVersioningSystem::DoCmpVersion(const char *A,const char *AEnd,
       dlhs++;
    if (drhs != rhs)
       drhs++;
-   
-   return CmpFragment(dlhs,AEnd,drhs,BEnd);
+
+   // no debian revision need to be treated like -0
+   if (*(dlhs-1) == '-' && *(drhs-1) == '-')
+      return CmpFragment(dlhs,AEnd,drhs,BEnd);
+   else if (*(dlhs-1) == '-')
+   {
+      const char* null = "0";
+      return CmpFragment(dlhs,AEnd,null, null+1);
+   }
+   else if (*(drhs-1) == '-')
+   {
+      const char* null = "0";
+      return CmpFragment(null, null+1, drhs, BEnd);
+   }
+   else
+      return 0;
 }
 									/*}}}*/
 // debVS::CheckDep - Check a single dependency				/*{{{*/