various simple changes to fix cppcheck warnings

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

diff --git a/apt-pkg/aptconfiguration.cc b/apt-pkg/aptconfiguration.cc
index 2fdb837c58087c05c9a5eab0a3f2f02a24eace29..37c8465822d394146f7acdec717803d5a5514617 100644 (file)
--- a/apt-pkg/aptconfiguration.cc
+++ b/apt-pkg/aptconfiguration.cc
@@ -47,6 +47,7 @@ const Configuration::getCompressionTypes(bool const &Cached) {
        _config->CndSet("Acquire::CompressionTypes::gz","gzip");
 
        setDefaultConfigurationForCompressors();
+       std::vector<APT::Configuration::Compressor> const compressors = getCompressors();
 
        // accept non-list order as override setting for config settings on commandline
        std::string const overrideOrder = _config->Find("Acquire::CompressionTypes::Order","");
@@ -60,15 +61,17 @@ const Configuration::getCompressionTypes(bool const &Cached) {
                if ((*o).empty() == true)
                        continue;
                // ignore types we have no method ready to use
-               if (_config->Exists(std::string("Acquire::CompressionTypes::").append(*o)) == false)
+               std::string const method = std::string("Acquire::CompressionTypes::").append(*o);
+               if (_config->Exists(method) == false)
                        continue;
                // ignore types we have no app ready to use
-               std::string const appsetting = std::string("Dir::Bin::").append(*o);
-               if (_config->Exists(appsetting) == true) {
-                       std::string const app = _config->FindFile(appsetting.c_str(), "");
-                       if (app.empty() == false && FileExists(app) == false)
-                               continue;
-               }
+               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())
+                       continue;
                types.push_back(*o);
        }
 
@@ -84,12 +87,12 @@ 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::string const appsetting = std::string("Dir::Bin::").append(Types->Value);
-               if (appsetting.empty() == false && _config->Exists(appsetting) == true) {
-                       std::string const app = _config->FindFile(appsetting.c_str(), "");
-                       if (app.empty() == false && FileExists(app) == false)
-                               continue;
-               }
+               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())
+                       continue;
                types.push_back(Types->Tag);
        }
 
@@ -141,7 +144,7 @@ std::vector<std::string> const Configuration::getLanguages(bool const &All,
        if (D != 0) {
                builtin.push_back("none");
                for (struct dirent *Ent = readdir(D); Ent != 0; Ent = readdir(D)) {
-                       string const name = Ent->d_name;
+                       string const name = SubstVar(Ent->d_name, "%5f", "_");
                        size_t const foundDash = name.rfind("-");
                        size_t const foundUnderscore = name.rfind("_", foundDash);
                        if (foundDash == string::npos || foundUnderscore == string::npos ||
@@ -231,17 +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
@@ -312,6 +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;
@@ -383,8 +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) {
@@ -435,7 +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->CndSet("Dir::Bin::lzma", _config->Find("Dir::Bin::xz"));
+               _config->Clear("Dir::Bin::lzma");
                _config->Set("APT::Compressor::lzma::Binary", "xz");
                if (_config->Exists("APT::Compressor::lzma::CompressArg") == false) {
                        _config->Set("APT::Compressor::lzma::CompressArg::", "--format=lzma");
@@ -474,11 +492,19 @@ const Configuration::getCompressors(bool const Cached) {
 
        setDefaultConfigurationForCompressors();
 
-       compressors.push_back(Compressor(".", "", "", "", "", 1));
+       compressors.push_back(Compressor(".", "", "", NULL, NULL, 1));
        if (_config->Exists("Dir::Bin::gzip") == false || FileExists(_config->FindFile("Dir::Bin::gzip")) == true)
                compressors.push_back(Compressor("gzip",".gz","gzip","-9n","-d",2));
+#ifdef HAVE_ZLIB
+       else
+               compressors.push_back(Compressor("gzip",".gz","false", NULL, NULL, 2));
+#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));
+#ifdef HAVE_BZ2
+       else
+               compressors.push_back(Compressor("bzip2",".bz2","false", NULL, NULL, 3));
+#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)