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+// -*- mode: cpp; mode: fold -*-
+// Description /*{{{*/
+/** \class APT::Configuration
+ * \brief Provide access methods to various configuration settings
+ *
+ * This class and their methods providing a layer around the usual access
+ * methods with _config to ensure that settings are correct and to be able
+ * to set defaults without the need to recheck it in every method again.
+ */
+ /*}}}*/
+#ifndef APT_CONFIGURATION_H
+#define APT_CONFIGURATION_H
+// Include Files /*{{{*/
+#include <apt-pkg/macros.h>
+#include <limits>
+#include <string>
+#include <vector>
+ /*}}}*/
+namespace APT {
+namespace Configuration { /*{{{*/
+ /** \brief Returns a vector of usable Compression Types
+ *
+ * Files can be compressed in various ways to decrease the size of the
+ * download. Therefore the Acquiremethods support a few compression types
+ * and some archives provide also a few different types. This option
+ * group exists to give the user the choice to prefer one type over the
+ * other (some compression types are very resource intensive - great if you
+ * have a limited download, bad if you have a really lowpowered hardware.)
+ *
+ * This method ensures that the defaults are set and checks at runtime
+ * if the type can be used. E.g. the current default is to prefer bzip2
+ * over lzma and gz - if the bzip2 binary is not available it has not much
+ * sense in downloading the bz2 file, therefore we will not return bz2 as
+ * a usable compression type. The availability is checked with the settings
+ * in the Dir::Bin group.
+ *
+ * \param Cached saves the result so we need to calculated it only once
+ * this parameter should only be used for testing purposes.
+ *
+ * \return a vector of the compression types in the preferred usage order
+ */
+ APT_PUBLIC std::vector<std::string> const getCompressionTypes(bool const &Cached = true);
+
+ /** \brief Returns a vector of Language Codes
+ *
+ * Languages can be defined with their two or five chars long code.
+ * This methods handles the various ways to set the preferred codes,
+ * honors the environment and ensures that the codes are not listed twice.
+ *
+ * The special word "environment" will be replaced with the long and the short
+ * code of the local settings and it will be insured that this will not add
+ * duplicates. So in an german local the setting "environment, de_DE, en, de"
+ * will result in "de_DE, de, en".
+ *
+ * Another special word is "none" which separates the preferred from all codes
+ * in this setting. So setting and method can be used to get codes the user want
+ * to see or to get all language codes APT (should) have Translations available.
+ *
+ * \param All return all codes or only codes for languages we want to use
+ * \param Cached saves the result so we need to calculated it only once
+ * this parameter should only be used for testing purposes.
+ * \param Locale don't get the locale from the system but use this one instead
+ * this parameter should only be used for testing purposes.
+ *
+ * \return a vector of (all) Language Codes in the preferred usage order
+ */
+ APT_PUBLIC std::vector<std::string> const getLanguages(bool const &All = false,
+ bool const &Cached = true, char const ** const Locale = 0);
+
+ /** \brief Are we interested in the given Language?
+ *
+ * \param Lang is the language we want to check
+ * \param All defines if we check against all codes or only against used codes
+ * \return true if we are interested, false otherwise
+ */
+ APT_PUBLIC bool checkLanguage(std::string Lang, bool const All = false);
+
+ /** \brief Returns a vector of Architectures we support
+ *
+ * \param Cached saves the result so we need to calculated it only once
+ * this parameter should only be used for testing purposes.
+ *
+ * \return a vector of Architectures in preferred order
+ */
+ APT_PUBLIC std::vector<std::string> const getArchitectures(bool const &Cached = true);
+
+ /** \brief Are we interested in the given Architecture?
+ *
+ * \param Arch we want to check
+ * \return true if we are interested, false otherwise
+ */
+ APT_PUBLIC bool checkArchitecture(std::string const &Arch);
+
+ /** \brief Representation of supported compressors */
+ struct APT_PUBLIC Compressor {
+ std::string Name;
+ std::string Extension;
+ std::string Binary;
+ std::vector<std::string> CompressArgs;
+ std::vector<std::string> UncompressArgs;
+ unsigned short Cost;
+
+ Compressor(char const *name, char const *extension, char const *binary,
+ char const *compressArg, char const *uncompressArg,
+ unsigned short const cost);
+ Compressor() : Cost(std::numeric_limits<unsigned short>::max()) {};
+ };
+
+ /** \brief Return a vector of Compressors supported for data.tar's
+ *
+ * \param Cached saves the result so we need to calculated it only once
+ * this parameter should only be used for testing purposes.
+ *
+ * \return a vector of Compressors
+ */
+ APT_PUBLIC std::vector<Compressor> const getCompressors(bool const Cached = true);
+
+ /** \brief Return a vector of extensions supported for data.tar's */
+ APT_PUBLIC std::vector<std::string> const getCompressorExtensions();
+
+ /** \return Return a vector of enabled build profile specifications */
+ APT_PUBLIC std::vector<std::string> const getBuildProfiles();
+ /** \return Return a comma-separated list of enabled build profile specifications */
+ APT_PUBLIC std::string const getBuildProfilesString();
+
+ std::string const getMachineID();
+
+#ifdef APT_COMPILING_APT
+ /** \return Whether we are running in a chroot */
+ APT_PUBLIC bool isChroot();
+ /** \return Check usr is merged or produce error. */
+ APT_PUBLIC bool checkUsrMerged();
+#endif
+ /*}}}*/
+}
+ /*}}}*/
+}
+#endif