try xz instead of bz2 first for compressed files

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

diff --git a/apt-pkg/aptconfiguration.cc b/apt-pkg/aptconfiguration.cc
index 941a9c3348e3ab7b3ddef66ea48d9ed7123ab51d..69f6f6f8d39d02642c3b7f33f36ae50156bf32ae 100644 (file)
--- a/apt-pkg/aptconfiguration.cc
+++ b/apt-pkg/aptconfiguration.cc
@@ -29,9 +29,37 @@
 #include <string>
 #include <vector>
 
-#include <apti18n.h>
                                                                        /*}}}*/
 namespace APT {
+// setDefaultConfigurationForCompressors                               /*{{{*/
+static void setDefaultConfigurationForCompressors() {
+       // Set default application paths to check for optional compression types
+       _config->CndSet("Dir::Bin::bzip2", "/bin/bzip2");
+       _config->CndSet("Dir::Bin::xz", "/usr/bin/xz");
+       if (FileExists(_config->FindFile("Dir::Bin::xz")) == true) {
+               _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");
+                       _config->Set("APT::Compressor::lzma::CompressArg::", "-9");
+               }
+               if (_config->Exists("APT::Compressor::lzma::UncompressArg") == false) {
+                       _config->Set("APT::Compressor::lzma::UncompressArg::", "--format=lzma");
+                       _config->Set("APT::Compressor::lzma::UncompressArg::", "-d");
+               }
+       } else {
+               _config->CndSet("Dir::Bin::lzma", "/usr/bin/lzma");
+               if (_config->Exists("APT::Compressor::lzma::CompressArg") == false) {
+                       _config->Set("APT::Compressor::lzma::CompressArg::", "--suffix=");
+                       _config->Set("APT::Compressor::lzma::CompressArg::", "-9");
+               }
+               if (_config->Exists("APT::Compressor::lzma::UncompressArg") == false) {
+                       _config->Set("APT::Compressor::lzma::UncompressArg::", "--suffix=");
+                       _config->Set("APT::Compressor::lzma::UncompressArg::", "-d");
+               }
+       }
+}
+                                                                       /*}}}*/
 // getCompressionTypes - Return Vector of usable compressiontypes      /*{{{*/
 // ---------------------------------------------------------------------
 /* return a vector of compression types in the preferred order. */
@@ -46,8 +74,8 @@ const Configuration::getCompressionTypes(bool const &Cached) {
        }
 
        // setup the defaults for the compressiontypes => method mapping
-       _config->CndSet("Acquire::CompressionTypes::bz2","bzip2");
        _config->CndSet("Acquire::CompressionTypes::xz","xz");
+       _config->CndSet("Acquire::CompressionTypes::bz2","bzip2");
        _config->CndSet("Acquire::CompressionTypes::lzma","lzma");
        _config->CndSet("Acquire::CompressionTypes::gz","gzip");
 
@@ -66,11 +94,9 @@ const Configuration::getCompressionTypes(bool const &Cached) {
                        continue;
                // ignore types we have no app ready to use
                std::string const app = _config->Find(method);
-               std::vector<APT::Configuration::Compressor>::const_iterator c = compressors.begin();
-               for (; c != compressors.end(); ++c)
-                       if (c->Name == app)
-                               break;
-               if (c == compressors.end())
+               if (std::find_if(compressors.begin(), compressors.end(), [&app](APT::Configuration::Compressor const &c) {
+                               return c.Name == app;
+                       }) == compressors.end())
                        continue;
                types.push_back(*o);
        }
@@ -87,11 +113,9 @@ const Configuration::getCompressionTypes(bool const &Cached) {
                if (std::find(types.begin(),types.end(),Types->Tag) != types.end())
                        continue;
                // ignore types we have no app ready to use
-               std::vector<APT::Configuration::Compressor>::const_iterator c = compressors.begin();
-               for (; c != compressors.end(); ++c)
-                       if (c->Name == Types->Value)
-                               break;
-               if (c == compressors.end())
+               if (std::find_if(compressors.begin(), compressors.end(), [&Types](APT::Configuration::Compressor const &c) {
+                               return c.Name == Types->Value;
+                       }) == compressors.end())
                        continue;
                types.push_back(Types->Tag);
        }
@@ -193,7 +217,7 @@ std::vector<std::string> const Configuration::getLanguages(bool const &All,
        // get the environment language codes: LC_MESSAGES (and later LANGUAGE)
        // we extract both, a long and a short code and then we will
        // check if we actually need both (rare) or if the short is enough
-       string const envMsg = string(Locale == 0 ? std::setlocale(LC_MESSAGES, NULL) : *Locale);
+       string const envMsg = string(Locale == 0 ? ::setlocale(LC_MESSAGES, NULL) : *Locale);
        size_t const lenShort = (envMsg.find('_') != string::npos) ? envMsg.find('_') : 2;
        size_t const lenLong = (envMsg.find_first_of(".@") != string::npos) ? envMsg.find_first_of(".@") : (lenShort + 3);
 
@@ -402,35 +426,6 @@ bool Configuration::checkArchitecture(std::string const &Arch) {
        return (std::find(archs.begin(), archs.end(), Arch) != archs.end());
 }
                                                                        /*}}}*/
-// setDefaultConfigurationForCompressors                               /*{{{*/
-void Configuration::setDefaultConfigurationForCompressors() {
-       // Set default application paths to check for optional compression types
-       _config->CndSet("Dir::Bin::bzip2", "/bin/bzip2");
-       _config->CndSet("Dir::Bin::xz", "/usr/bin/xz");
-       if (FileExists(_config->FindFile("Dir::Bin::xz")) == true) {
-               _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");
-                       _config->Set("APT::Compressor::lzma::CompressArg::", "-9");
-               }
-               if (_config->Exists("APT::Compressor::lzma::UncompressArg") == false) {
-                       _config->Set("APT::Compressor::lzma::UncompressArg::", "--format=lzma");
-                       _config->Set("APT::Compressor::lzma::UncompressArg::", "-d");
-               }
-       } else {
-               _config->CndSet("Dir::Bin::lzma", "/usr/bin/lzma");
-               if (_config->Exists("APT::Compressor::lzma::CompressArg") == false) {
-                       _config->Set("APT::Compressor::lzma::CompressArg::", "--suffix=");
-                       _config->Set("APT::Compressor::lzma::CompressArg::", "-9");
-               }
-               if (_config->Exists("APT::Compressor::lzma::UncompressArg") == false) {
-                       _config->Set("APT::Compressor::lzma::UncompressArg::", "--suffix=");
-                       _config->Set("APT::Compressor::lzma::UncompressArg::", "-d");
-               }
-       }
-}
-                                                                       /*}}}*/
 // getCompressors - Return Vector of usealbe compressors               /*{{{*/
 // ---------------------------------------------------------------------
 /* return a vector of compressors used by apt-ftparchive in the
@@ -453,22 +448,30 @@ const Configuration::getCompressors(bool const Cached) {
 #ifdef HAVE_ZLIB
        else
                compressors.push_back(Compressor("gzip",".gz","false", NULL, NULL, 2));
+#endif
+       if (_config->Exists("Dir::Bin::xz") == false || FileExists(_config->FindFile("Dir::Bin::xz")) == true)
+               compressors.push_back(Compressor("xz",".xz","xz","-6","-d",3));
+#ifdef HAVE_LZMA
+       else
+               compressors.push_back(Compressor("xz",".xz","false", NULL, NULL, 3));
 #endif
        if (_config->Exists("Dir::Bin::bzip2") == false || FileExists(_config->FindFile("Dir::Bin::bzip2")) == true)
-               compressors.push_back(Compressor("bzip2",".bz2","bzip2","-9","-d",3));
+               compressors.push_back(Compressor("bzip2",".bz2","bzip2","-9","-d",4));
 #ifdef HAVE_BZ2
        else
-               compressors.push_back(Compressor("bzip2",".bz2","false", NULL, NULL, 3));
+               compressors.push_back(Compressor("bzip2",".bz2","false", NULL, NULL, 4));
 #endif
-       if (_config->Exists("Dir::Bin::xz") == false || FileExists(_config->FindFile("Dir::Bin::xz")) == true)
-               compressors.push_back(Compressor("xz",".xz","xz","-6","-d",4));
        if (_config->Exists("Dir::Bin::lzma") == false || FileExists(_config->FindFile("Dir::Bin::lzma")) == true)
                compressors.push_back(Compressor("lzma",".lzma","lzma","-9","-d",5));
+#ifdef HAVE_LZMA
+       else
+               compressors.push_back(Compressor("lzma",".lzma","false", NULL, NULL, 5));
+#endif
 
        std::vector<std::string> const comp = _config->FindVector("APT::Compressor");
        for (std::vector<std::string>::const_iterator c = comp.begin();
             c != comp.end(); ++c) {
-               if (*c == "." || *c == "gzip" || *c == "bzip2" || *c == "lzma" || *c == "xz")
+               if (c->empty() || *c == "." || *c == "gzip" || *c == "bzip2" || *c == "lzma" || *c == "xz")
                        continue;
                compressors.push_back(Compressor(c->c_str(), std::string(".").append(*c).c_str(), c->c_str(), "-9", "-d", 100));
        }
@@ -532,7 +535,7 @@ std::string const Configuration::getBuildProfilesString() {
                return "";
        std::vector<std::string>::const_iterator p = profiles.begin();
        std::string list = *p;
-       for (; p != profiles.end(); ++p)
+       for (++p; p != profiles.end(); ++p)
           list.append(",").append(*p);
        return list;
 }