merge Goswin Brederlow "support download of index files for different archs"

patch which includes the following big changes:
- Declare the unused [vendor] field in sources.list as option field,
  e.g. deb [arch=amd64,i386 lang=en_GB have=fun] http://example.org
- When fetching index files download them for all APT::Architectures
  (overrideable with the options field above)
- Allow all architectures of APT::Architectures to be in the Cache
- Add the architecture to status and progress informations
- Add b= (Binary architecture) to policy

This commit doesn't incude the "pin-hack" as the Group structure will take
care of this (and does it already to some extend).

1 files changed, 13 insertions, 21 deletions

diff --git a/apt-pkg/cdrom.cc b/apt-pkg/cdrom.cc
index 72d8e4d41..271bca409 100644
--- a/apt-pkg/cdrom.cc
+++ b/apt-pkg/cdrom.cc
@@ -6,6 +6,8 @@
 #include<apt-pkg/cdromutl.h>
 #include<apt-pkg/strutl.h>
 #include<apt-pkg/cdrom.h>
+#include<apt-pkg/aptconfiguration.h>
+
 #include<sstream>
 #include<fstream>
 #include<config.h>
@@ -216,33 +218,23 @@ int pkgCdrom::Score(string Path)
 /* Here we drop everything that is not this machines arch */
 bool pkgCdrom::DropBinaryArch(vector<string> &List)
 {
-   char S[300];
-   snprintf(S,sizeof(S),"/binary-%s/",
-	    _config->Find("Apt::Architecture").c_str());
-   
+
    for (unsigned int I = 0; I < List.size(); I++)
    {
       const char *Str = List[I].c_str();
-      
-      const char *Res;
-      if ((Res = strstr(Str,"/binary-")) == 0)
+      const char *Start, *End;
+      if ((Start = strstr(Str,"/binary-")) == 0)
 	 continue;
 
-      // Weird, remove it.
-      if (strlen(Res) < strlen(S))
-      {
-	 List.erase(List.begin() + I);
-	 I--;
-	 continue;
-      }
-	  
-      // See if it is our arch
-      if (stringcmp(Res,Res + strlen(S),S) == 0)
-	 continue;
-      
-      // Erase it
+      // Between Start and End is the architecture
+      Start += 8;
+      if ((End = strstr(Start,"/")) != 0 && Start != End &&
+          APT::Configuration::checkArchitecture(string(Start, --End)) == true)
+	 continue; // okay, architecture is accepted
+
+      // not accepted -> Erase it
       List.erase(List.begin() + I);
-      I--;
+      --I; // the next entry is at the same index after the erase
    }
    
    return true;