fix lzma-support detection via xz binary

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

diff --git a/apt-pkg/aptconfiguration.cc b/apt-pkg/aptconfiguration.cc
index d763546f85b464f6387caf49981d914c54faebb3..115d116168a5e7986c341e402e603c5aac230ae1 100644 (file)
--- a/apt-pkg/aptconfiguration.cc
+++ b/apt-pkg/aptconfiguration.cc
@@ -234,17 +234,21 @@ std::vector<std::string> const Configuration::getLanguages(bool const &All,
        // override the configuration settings vector of languages.
        string const forceLang = _config->Find("Acquire::Languages","");
        if (forceLang.empty() == false) {
-               if (forceLang == "environment") {
-                       codes = environment;
-               } else if (forceLang != "none")
-                       codes.push_back(forceLang);
-               else //if (forceLang == "none")
-                       builtin.clear();
-               allCodes = codes;
-               for (std::vector<string>::const_iterator b = builtin.begin();
-                    b != builtin.end(); ++b)
-                       if (std::find(allCodes.begin(), allCodes.end(), *b) == allCodes.end())
-                               allCodes.push_back(*b);
+               if (forceLang == "none") {
+                       codes.clear();
+                       allCodes.clear();
+                       allCodes.push_back("none");
+               } else {
+                       if (forceLang == "environment")
+                               codes = environment;
+                       else
+                               codes.push_back(forceLang);
+                       allCodes = codes;
+                       for (std::vector<string>::const_iterator b = builtin.begin();
+                            b != builtin.end(); ++b)
+                               if (std::find(allCodes.begin(), allCodes.end(), *b) == allCodes.end())
+                                       allCodes.push_back(*b);
+               }
                if (All == true)
                        return allCodes;
                else
@@ -315,6 +319,17 @@ std::vector<std::string> const Configuration::getLanguages(bool const &All,
                return codes;
 }
                                                                        /*}}}*/
+// checkLanguage - are we interested in the given Language?            /*{{{*/
+bool const Configuration::checkLanguage(std::string Lang, bool const All) {
+       // the empty Language is always interesting as it is the original
+       if (Lang.empty() == true)
+               return true;
+       // filenames are encoded, so undo this
+       Lang = SubstVar(Lang, "%5f", "_");
+       std::vector<std::string> const langs = getLanguages(All, true);
+       return (std::find(langs.begin(), langs.end(), Lang) != langs.end());
+}
+                                                                       /*}}}*/
 // getArchitectures - Return Vector of prefered Architectures          /*{{{*/
 std::vector<std::string> const Configuration::getArchitectures(bool const &Cached) {
        using std::string;
@@ -373,12 +388,12 @@ std::vector<std::string> const Configuration::getArchitectures(bool const &Cache
                if (dpkgMultiArch == 0) {
                        close(external[0]);
                        std::string const chrootDir = _config->FindDir("DPkg::Chroot-Directory");
-                       if (chrootDir != "/" && chroot(chrootDir.c_str()) != 0)
-                               _error->WarningE("getArchitecture", "Couldn't chroot into %s for dpkg --print-foreign-architectures", chrootDir.c_str());
                        int const nullfd = open("/dev/null", O_RDONLY);
                        dup2(nullfd, STDIN_FILENO);
                        dup2(external[1], STDOUT_FILENO);
                        dup2(nullfd, STDERR_FILENO);
+                       if (chrootDir != "/" && chroot(chrootDir.c_str()) != 0 && chdir("/") != 0)
+                               _error->WarningE("getArchitecture", "Couldn't chroot into %s for dpkg --print-foreign-architectures", chrootDir.c_str());
                        execvp(Args[0], (char**) &Args[0]);
                        _error->WarningE("getArchitecture", "Can't detect foreign architectures supported by dpkg!");
                        _exit(100);
@@ -386,8 +401,8 @@ std::vector<std::string> const Configuration::getArchitectures(bool const &Cache
                close(external[1]);
 
                FILE *dpkg = fdopen(external[0], "r");
-               char buf[1024];
                if(dpkg != NULL) {
+                       char buf[1024];
                        while (fgets(buf, sizeof(buf), dpkg) != NULL) {
                                char* arch = strtok(buf, " ");
                                while (arch != NULL) {
@@ -438,7 +453,7 @@ void Configuration::setDefaultConfigurationForCompressors() {
        _config->CndSet("Dir::Bin::bzip2", "/bin/bzip2");
        _config->CndSet("Dir::Bin::xz", "/usr/bin/xz");
        if (FileExists(_config->FindFile("Dir::Bin::xz")) == true) {
-               _config->Clear("Dir::Bin::lzma");
+               _config->Set("Dir::Bin::lzma", _config->FindFile("Dir::Bin::xz"));
                _config->Set("APT::Compressor::lzma::Binary", "xz");
                if (_config->Exists("APT::Compressor::lzma::CompressArg") == false) {
                        _config->Set("APT::Compressor::lzma::CompressArg::", "--format=lzma");