implement PDiff patching for compressed files

[apt.git] / apt-pkg / deb / debmetaindex.cc

diff --git a/apt-pkg/deb/debmetaindex.cc b/apt-pkg/deb/debmetaindex.cc
index 78d54b04e0548b9c752cc53d8be7ddeafd646334..00dc1eeec24581925e28d814c7c3cdb7a727f06d 100644 (file)
--- a/apt-pkg/deb/debmetaindex.cc
+++ b/apt-pkg/deb/debmetaindex.cc
@@ -21,6 +21,7 @@
 #include <utility>
 #include <vector>
 #include <algorithm>
+#include <sstream>
 
 #include <sys/stat.h>
 #include <string.h>
@@ -121,19 +122,33 @@ static void GetIndexTargetsFor(char const * const Type, std::string const &URI,
    std::string const Release = (Dist == "/") ? "" : Dist;
    std::string const Site = ::URI::ArchiveOnly(URI);
 
+   std::string DefCompressionTypes;
+   {
+      std::vector<std::string> types = APT::Configuration::getCompressionTypes();
+      if (types.empty() == false)
+      {
+        std::ostringstream os;
+        std::copy(types.begin(), types.end()-1, std::ostream_iterator<std::string>(os, " "));
+        os << *types.rbegin();
+        DefCompressionTypes = os.str();
+      }
+   }
    bool const GzipIndex = _config->FindB("Acquire::GzipIndexes", false);
    for (std::vector<debReleaseIndexPrivate::debSectionEntry>::const_iterator E = entries.begin(); E != entries.end(); ++E)
    {
       for (std::vector<std::string>::const_iterator T = E->Targets.begin(); T != E->Targets.end(); ++T)
       {
-#define APT_T_CONFIG(X) _config->Find(std::string("Acquire::IndexTargets::") + Type  + "::" + *T + "::" + (X))
-        std::string const tplMetaKey = APT_T_CONFIG(flatArchive ? "flatMetaKey" : "MetaKey");
-        std::string const tplShortDesc = APT_T_CONFIG("ShortDescription");
-        std::string const tplLongDesc = "$(SITE) " + APT_T_CONFIG(flatArchive ? "flatDescription" : "Description");
-        bool const IsOptional = _config->FindB(std::string("Acquire::IndexTargets::") + Type + "::" + *T + "::Optional", true);
-        bool const KeepCompressed = _config->FindB(std::string("Acquire::IndexTargets::") + Type + "::" + *T + "::KeepCompressed", GzipIndex);
-        bool const UsePDiffs = _config->FindB(std::string("Acquire::IndexTargets::") + Type + "::" + *T + "::PDiffs", E->UsePDiffs);
-#undef APT_T_CONFIG
+#define APT_T_CONFIG_STR(X, Y) _config->Find(std::string("Acquire::IndexTargets::") + Type  + "::" + *T + "::" + (X), (Y))
+#define APT_T_CONFIG_BOOL(X, Y) _config->FindB(std::string("Acquire::IndexTargets::") + Type  + "::" + *T + "::" + (X), (Y))
+        std::string const tplMetaKey = APT_T_CONFIG_STR(flatArchive ? "flatMetaKey" : "MetaKey", "");
+        std::string const tplShortDesc = APT_T_CONFIG_STR("ShortDescription", "");
+        std::string const tplLongDesc = "$(SITE) " + APT_T_CONFIG_STR(flatArchive ? "flatDescription" : "Description", "");
+        bool const IsOptional = APT_T_CONFIG_BOOL("Optional", true);
+        bool const KeepCompressed = APT_T_CONFIG_BOOL("KeepCompressed", GzipIndex);
+        bool const UsePDiffs = APT_T_CONFIG_BOOL("PDiffs", E->UsePDiffs);
+        std::string const CompressionTypes = APT_T_CONFIG_STR("CompressionTypes", DefCompressionTypes);
+#undef APT_T_CONFIG_BOOL
+#undef APT_T_CONFIG_STR
         if (tplMetaKey.empty())
            continue;
 
@@ -144,7 +159,7 @@ static void GetIndexTargetsFor(char const * const Type, std::string const &URI,
 
            for (std::vector<std::string>::const_iterator A = E->Architectures.begin(); A != E->Architectures.end(); ++A)
            {
-
+              // available in templates
               std::map<std::string, std::string> Options;
               Options.insert(std::make_pair("SITE", Site));
               Options.insert(std::make_pair("RELEASE", Release));
@@ -154,14 +169,6 @@ static void GetIndexTargetsFor(char const * const Type, std::string const &URI,
                  Options.insert(std::make_pair("LANGUAGE", *L));
               if (tplMetaKey.find("$(ARCHITECTURE)") != std::string::npos)
                  Options.insert(std::make_pair("ARCHITECTURE", *A));
-              Options.insert(std::make_pair("BASE_URI", baseURI));
-              Options.insert(std::make_pair("REPO_URI", URI));
-              Options.insert(std::make_pair("TARGET_OF", Type));
-              Options.insert(std::make_pair("CREATED_BY", *T));
-              if (UsePDiffs)
-                 Options.insert(std::make_pair("PDIFFS", "yes"));
-              else
-                 Options.insert(std::make_pair("PDIFFS", "no"));
 
               std::string MetaKey = tplMetaKey;
               std::string ShortDesc = tplShortDesc;
@@ -172,6 +179,18 @@ static void GetIndexTargetsFor(char const * const Type, std::string const &URI,
                  ShortDesc = SubstVar(ShortDesc, std::string("$(") + O->first + ")", O->second);
                  LongDesc = SubstVar(LongDesc, std::string("$(") + O->first + ")", O->second);
               }
+
+              // not available in templates, but in the indextarget
+              Options.insert(std::make_pair("BASE_URI", baseURI));
+              Options.insert(std::make_pair("REPO_URI", URI));
+              Options.insert(std::make_pair("TARGET_OF", Type));
+              Options.insert(std::make_pair("CREATED_BY", *T));
+              if (UsePDiffs)
+                 Options.insert(std::make_pair("PDIFFS", "yes"));
+              else
+                 Options.insert(std::make_pair("PDIFFS", "no"));
+              Options.insert(std::make_pair("COMPRESSIONTYPES", CompressionTypes));
+
               IndexTarget Target(
                     MetaKey,
                     ShortDesc,