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+// -*- mode: cpp; mode: fold -*-
+// Description /*{{{*/
+// $Id: version.h,v 1.8 2001/05/27 05:55:27 jgg Exp $
+/* ######################################################################
+
+ Version - Versioning system..
+
+ The versioning system represents how versions are compared, represented
+ and how dependencies are evaluated. As a general rule versioning
+ systems are not compatible unless specifically allowed by the
+ TestCompatibility query.
+
+ The versions are stored in a global list of versions, but that is just
+ so that they can be queried when someone does 'apt-get -v'.
+ pkgSystem provides the proper means to access the VS for the active
+ system.
+
+ ##################################################################### */
+ /*}}}*/
+#ifndef PKGLIB_VERSION_H
+#define PKGLIB_VERSION_H
+
+#include <apt-pkg/strutl.h>
+#include <string>
+
+#ifndef APT_8_CLEANER_HEADERS
+using std::string;
+#endif
+
+class pkgVersioningSystem
+{
+ public:
+ // Global list of VS's
+ static pkgVersioningSystem **GlobalList;
+ static unsigned long GlobalListLen;
+ static pkgVersioningSystem *GetVS(const char *Label) APT_PURE;
+
+ const char *Label;
+
+ // Compare versions..
+ virtual int DoCmpVersion(const char *A,const char *Aend,
+ const char *B,const char *Bend) = 0;
+
+ virtual bool CheckDep(const char *PkgVer,int Op,const char *DepVer) = 0;
+ virtual int DoCmpReleaseVer(const char *A,const char *Aend,
+ const char *B,const char *Bend) = 0;
+ virtual std::string UpstreamVersion(const char *A) = 0;
+
+ // See if the given VS is compatible with this one..
+ virtual bool TestCompatibility(pkgVersioningSystem const &Against)
+ {return this == &Against;};
+
+ // Shortcuts
+ APT_MKSTRCMP(CmpVersion,DoCmpVersion);
+ APT_MKSTRCMP(CmpReleaseVer,DoCmpReleaseVer);
+
+ pkgVersioningSystem();
+ virtual ~pkgVersioningSystem();
+};
+
+#endif