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authorMichael Vogt <michael.vogt@ubuntu.com>2009-08-27 14:16:07 +0200
committerMichael Vogt <michael.vogt@ubuntu.com>2009-08-27 14:16:07 +0200
commitfe58cbc86638e214fa137166a704fbff798c546a (patch)
treefcd445921d800462a2dab16db2951024440d4956 /apt-pkg/aptconfiguration.cc
parentf30eb61fde728f125bf7c673cadc17f43d82a2d0 (diff)
parent8c75bf9e9558d062a5f3d1fe5276aeffba6403a0 (diff)
merged from lp:~donkult/apt/sid
Diffstat (limited to 'apt-pkg/aptconfiguration.cc')
-rw-r--r--apt-pkg/aptconfiguration.cc78
1 files changed, 78 insertions, 0 deletions
diff --git a/apt-pkg/aptconfiguration.cc b/apt-pkg/aptconfiguration.cc
new file mode 100644
index 000000000..1a8e8262f
--- /dev/null
+++ b/apt-pkg/aptconfiguration.cc
@@ -0,0 +1,78 @@
+// -*- 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>
+ /*}}}*/
+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();
+ }
+
+ // 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");
+
+ ::Configuration::Item const *Opts = _config->Tree("Acquire::CompressionTypes");
+ if (Opts != 0)
+ Opts = Opts->Child;
+
+ // at first, move over the options to setup at least the default options
+ bool foundLzma=false, foundBzip2=false, foundGzip=false;
+ for (; Opts != 0; Opts = Opts->Next) {
+ if (Opts->Value == "lzma")
+ foundLzma = true;
+ else if (Opts->Value == "bz2")
+ foundBzip2 = true;
+ else if (Opts->Value == "gz")
+ foundGzip = true;
+ }
+
+ // setup the defaults now
+ if (!foundBzip2)
+ _config->Set("Acquire::CompressionTypes::bz2","bzip2");
+ if (!foundLzma)
+ _config->Set("Acquire::CompressionTypes::lzma","lzma");
+ if (!foundGzip)
+ _config->Set("Acquire::CompressionTypes::gz","gzip");
+
+ // move again over the option tree to finially calculate our result
+ ::Configuration::Item const *Types = _config->Tree("Acquire::CompressionTypes");
+ if (Types != 0)
+ Types = Types->Child;
+
+ for (; Types != 0; Types = Types->Next) {
+ string const appsetting = string("Dir::Bin::").append(Types->Value);
+ // ignore compression types we have no app ready to use
+ 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;
+}
+ /*}}}*/
+}