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-rw-r--r--apt-pkg/pkgsystem.cc89
1 files changed, 89 insertions, 0 deletions
diff --git a/apt-pkg/pkgsystem.cc b/apt-pkg/pkgsystem.cc
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index 000000000..b1c6cc1ea
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+++ b/apt-pkg/pkgsystem.cc
@@ -0,0 +1,89 @@
+// -*- mode: cpp; mode: fold -*-
+// Description /*{{{*/
+// $Id: pkgsystem.cc,v 1.3 2004/02/27 00:43:16 mdz Exp $
+/* ######################################################################
+
+ System - Abstraction for running on different systems.
+
+ Basic general structure..
+
+ ##################################################################### */
+ /*}}}*/
+// Include Files /*{{{*/
+#include<config.h>
+
+#include <apt-pkg/debsystem.h>
+#include <apt-pkg/pkgsystem.h>
+#include <apt-pkg/macros.h>
+
+#include <map>
+#include <cassert>
+#include <cstring>
+ /*}}}*/
+
+pkgSystem *_system = 0;
+static pkgSystem *SysList[10];
+pkgSystem **pkgSystem::GlobalList = SysList;
+unsigned long pkgSystem::GlobalListLen = 0;
+
+class APT_HIDDEN pkgSystemPrivate /*{{{*/
+{
+public:
+ typedef decltype(pkgCache::Version::ID) idtype;
+ std::map<idtype,idtype> idmap;
+ pkgSystemPrivate() {}
+};
+ /*}}}*/
+// System::pkgSystem - Constructor /*{{{*/
+// ---------------------------------------------------------------------
+/* Add it to the global list.. */
+pkgSystem::pkgSystem(char const * const label, pkgVersioningSystem * const vs) :
+ Label(label), VS(vs), d(new pkgSystemPrivate())
+{
+ assert(GlobalListLen < sizeof(SysList)/sizeof(*SysList));
+ SysList[GlobalListLen] = this;
+ ++GlobalListLen;
+}
+ /*}}}*/
+// System::GetSystem - Get the named system /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+APT_PURE pkgSystem *pkgSystem::GetSystem(const char *Label)
+{
+ for (unsigned I = 0; I != GlobalListLen; I++)
+ if (strcmp(SysList[I]->Label,Label) == 0)
+ return SysList[I];
+ return 0;
+}
+ /*}}}*/
+bool pkgSystem::MultiArchSupported() const /*{{{*/
+{
+ debSystem const * const deb = dynamic_cast<debSystem const *>(this);
+ if (deb != NULL)
+ return deb->SupportsMultiArch();
+ return true;
+}
+ /*}}}*/
+std::vector<std::string> pkgSystem::ArchitecturesSupported() const /*{{{*/
+{
+ debSystem const * const deb = dynamic_cast<debSystem const *>(this);
+ if (deb != NULL)
+ return deb->SupportedArchitectures();
+ return {};
+}
+ /*}}}*/
+// pkgSystem::Set/GetVersionMapping - for internal/external communcation/*{{{*/
+void pkgSystem::SetVersionMapping(map_id_t const in, map_id_t const out)
+{
+ if (in == out)
+ return;
+ d->idmap.emplace(in, out);
+}
+map_id_t pkgSystem::GetVersionMapping(map_id_t const in) const
+{
+ auto const o = d->idmap.find(in);
+ return (o == d->idmap.end()) ? in : o->second;
+}
+ /*}}}*/
+
+pkgSystem::~pkgSystem() {}