* merged the "apt--install-task" branch

1 files changed, 58 insertions, 1 deletions

diff --git a/cmdline/apt-get.cc b/cmdline/apt-get.cc
index 4dfb3325c..cb0690bdf 100644
--- a/cmdline/apt-get.cc
+++ b/cmdline/apt-get.cc
@@ -1469,6 +1469,51 @@ bool DoUpgrade(CommandLine &CmdL)
    return InstallPackages(Cache,true);
 }
 									/*}}}*/
+// DoInstallTask - Install task from the command line			/*{{{*/
+// ---------------------------------------------------------------------
+/* Install named task */
+bool TryInstallTask(pkgDepCache &Cache, pkgProblemResolver &Fix, 
+		    bool BrokenFix,
+		    unsigned int& ExpectedInst, 
+		    const char *taskname)
+{
+   const char *start, *end;
+   pkgCache::PkgIterator Pkg;
+   char buf[64*1024];
+   regex_t Pattern;
+
+   // get the records
+   pkgRecords Recs(Cache);
+
+   // build regexp for the task
+   char S[300];
+   snprintf(S, sizeof(S), "^Task:.*[^a-z]%s[^a-z].*\n", taskname);
+   regcomp(&Pattern,S, REG_EXTENDED | REG_NOSUB | REG_NEWLINE);
+   
+   bool found = false;
+   bool res = true;
+   for (Pkg = Cache.PkgBegin(); Pkg.end() == false; Pkg++)
+   {
+      pkgCache::VerIterator ver = Cache[Pkg].CandidateVerIter(Cache);
+      if(ver.end())
+	 continue;
+      pkgRecords::Parser &parser = Recs.Lookup(ver.FileList());
+      parser.GetRec(start,end);
+      strncpy(buf, start, end-start);
+      buf[end-start] = 0x0;
+      if (regexec(&Pattern,buf,0,0,0) != 0)
+	 continue;
+      res &= TryToInstall(Pkg,Cache,Fix,false,BrokenFix,ExpectedInst);
+      found = true;
+   }
+   
+   if(!found)
+      _error->Error(_("Couldn't find task %s"),taskname);
+
+   regfree(&Pattern);
+   return res;
+}
+
 // DoInstall - Install packages from the command line			/*{{{*/
 // ---------------------------------------------------------------------
 /* Install named packages */
@@ -1510,6 +1555,18 @@ bool DoInstall(CommandLine &CmdL)
       bool Remove = DefRemove;
       char *VerTag = 0;
       bool VerIsRel = false;
+
+      // this is a task!
+      if (Length >= 1 && S[Length - 1] == '^')
+      {
+	 S[--Length] = 0;
+	 // tasks must always be confirmed
+	 ExpectedInst += 1000;
+	 // see if we can install it
+	 TryInstallTask(Cache, Fix, BrokenFix, ExpectedInst, S);
+	 continue;
+      }
+
       while (Cache->FindPkg(S).end() == true)
       {
 	 // Handle an optional end tag indicating what to do
@@ -1526,7 +1583,7 @@ bool DoInstall(CommandLine &CmdL)
 	    S[--Length] = 0;
 	    continue;
 	 }
-	 
+
 	 char *Slash = strchr(S,'=');
 	 if (Slash != 0)
 	 {