diff options
author | Michael Vogt <michael.vogt@ubuntu.com> | 2009-09-23 17:26:43 +0200 |
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committer | Michael Vogt <michael.vogt@ubuntu.com> | 2009-09-23 17:26:43 +0200 |
commit | f98233c1b1e93ef1bb595bfc6e59c74d9e05eb6a (patch) | |
tree | 82d6aa3ff7c2c2e6d073ff39f09e52aa7407562d /apt-pkg/aptconfiguration.cc | |
parent | a69a3a044be84f72508fb468cdf13d9e5f724dd4 (diff) | |
parent | f7d6459db697c6dbba8e5d787a817e7721bfb577 (diff) |
merged from debian
Diffstat (limited to 'apt-pkg/aptconfiguration.cc')
-rw-r--r-- | apt-pkg/aptconfiguration.cc | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/apt-pkg/aptconfiguration.cc b/apt-pkg/aptconfiguration.cc new file mode 100644 index 000000000..45ae9bed5 --- /dev/null +++ b/apt-pkg/aptconfiguration.cc @@ -0,0 +1,90 @@ +// -*- mode: cpp; mode: fold -*- +// Description /*{{{*/ +/* ###################################################################### + + Provide access methods to various configuration settings, + setup defaults and returns validate settings. + + ##################################################################### */ + /*}}}*/ +// Include Files /*{{{*/ +#include <apt-pkg/fileutl.h> +#include <apt-pkg/aptconfiguration.h> +#include <apt-pkg/configuration.h> + +#include <vector> +#include <string> +#include <algorithm> + /*}}}*/ +namespace APT { +// getCompressionTypes - Return Vector of usbale compressiontypes /*{{{*/ +// --------------------------------------------------------------------- +/* return a vector of compression types in the prefered order. */ +std::vector<std::string> +const Configuration::getCompressionTypes(bool const &Cached) { + static std::vector<std::string> types; + if (types.empty() == false) { + if (Cached == true) + return types; + else + types.clear(); + } + + // setup the defaults for the compressiontypes => method mapping + _config->CndSet("Acquire::CompressionTypes::bz2","bzip2"); + _config->CndSet("Acquire::CompressionTypes::lzma","lzma"); + _config->CndSet("Acquire::CompressionTypes::gz","gzip"); + + // Set default application paths to check for optional compression types + _config->CndSet("Dir::Bin::lzma", "/usr/bin/lzma"); + _config->CndSet("Dir::Bin::bzip2", "/bin/bzip2"); + + // accept non-list order as override setting for config settings on commandline + std::string const overrideOrder = _config->Find("Acquire::CompressionTypes::Order",""); + if (overrideOrder.empty() == false) + types.push_back(overrideOrder); + + // load the order setting into our vector + std::vector<std::string> const order = _config->FindVector("Acquire::CompressionTypes::Order"); + for (std::vector<std::string>::const_iterator o = order.begin(); + o != order.end(); o++) { + if ((*o).empty() == true) + continue; + // ignore types we have no method ready to use + if (_config->Exists(string("Acquire::CompressionTypes::").append(*o)) == false) + continue; + // ignore types we have no app ready to use + string const appsetting = 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; + } + types.push_back(*o); + } + + // move again over the option tree to add all missing compression types + ::Configuration::Item const *Types = _config->Tree("Acquire::CompressionTypes"); + if (Types != 0) + Types = Types->Child; + + for (; Types != 0; Types = Types->Next) { + if (Types->Tag == "Order" || Types->Tag.empty() == true) + continue; + // ignore types we already have in the vector + if (std::find(types.begin(),types.end(),Types->Tag) != types.end()) + continue; + // ignore types we have no app ready to use + string const appsetting = 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; + } + types.push_back(Types->Tag); + } + + return types; +} + /*}}}*/ +} |