parse correctly the Hold: lines into Pkg->SelectedState = Hold

[apt.git] / apt-pkg / aptconfiguration.cc

diff --git a/apt-pkg/aptconfiguration.cc b/apt-pkg/aptconfiguration.cc
index b23e12acb42e78175f4e78bc3d920cd5d5640652..14ee09e0d2ea7c5c34e6d5b6af02f5465a011edc 100644 (file)
--- a/apt-pkg/aptconfiguration.cc
+++ b/apt-pkg/aptconfiguration.cc
@@ -17,6 +17,7 @@
 
 #include <sys/types.h>
 #include <dirent.h>
+#include <stdio.h>
 
 #include <algorithm>
 #include <string>
@@ -314,11 +315,41 @@ std::vector<std::string> const Configuration::getArchitectures(bool const &Cache
        if (likely(Cached == true) && archs.empty() == false)
                return archs;
 
-       archs = _config->FindVector("APT::Architectures");
        string const arch = _config->Find("APT::Architecture");
+       archs = _config->FindVector("APT::Architectures");
+
        if (unlikely(arch.empty() == true))
                return archs;
 
+       // FIXME: It is a bit unclean to have debian specific code here…
+       if (archs.empty() == true) {
+               archs.push_back(arch);
+               string dpkgcall = _config->Find("Dir::Bin::dpkg", "dpkg");
+               std::vector<string> const dpkgoptions = _config->FindVector("DPkg::options");
+               for (std::vector<string>::const_iterator o = dpkgoptions.begin();
+                    o != dpkgoptions.end(); ++o)
+                       dpkgcall.append(" ").append(*o);
+               dpkgcall.append(" --print-foreign-architectures 2> /dev/null");
+               FILE *dpkg = popen(dpkgcall.c_str(), "r");
+               char buf[1024];
+               if(dpkg != NULL) {
+                       if (fgets(buf, sizeof(buf), dpkg) != NULL) {
+                               char* arch = strtok(buf, " ");
+                               while (arch != NULL) {
+                                       for (; isspace(*arch) != 0; ++arch);
+                                       if (arch != '\0') {
+                                               char const* archend = arch;
+                                               for (; isspace(*archend) == 0 && *archend != '\0'; ++archend);
+                                               archs.push_back(string(arch, (archend - arch)));
+                                       }
+                                       arch = strtok(NULL, " ");
+                               }
+                       }
+                       pclose(dpkg);
+               }
+               return archs;
+       }
+
        if (archs.empty() == true ||
            std::find(archs.begin(), archs.end(), arch) == archs.end())
                archs.push_back(arch);