argList: avoid relative cases ending in '..' - makes for very ugly names

- this stop problems caused by a "-case .." specification

  Previously  args.globalCaseName() + ".Ext"  resulted in silly names
  eg, "...png", or "surface-...stl"

ReleaseNotes-1.6

@@ -147,6 +147,8 @@
       processing command-line options.
     + Export *new* environment variable =FOAM_CASENAME= that contains the
       name part of the =FOAM_CASE= environment variable
+    + Resolve relative cases ending in =..= to avoid potentially bad/ugly
+      case names being used.
 
 *** Misc. improvements
     + Improved consistency and interoperability between =face= and =triFace= classes.

src/OpenFOAM/global/argList/argList.C

@@ -66,14 +66,14 @@ bool Foam::argList::regroupArgv(int& argc, char**& argv)
 
     // note: we also re-write directly into args_
     // and use a second pass to sort out args/options
-    for (int argi=0; argi < argc; argi++)
+    for (int argI = 0; argI < argc; argI++)
     {
-        if (strcmp(argv[argi], "(") == 0)
+        if (strcmp(argv[argI], "(") == 0)
         {
             level++;
             tmpString += "(";
         }
-        else if (strcmp(argv[argi], ")") == 0)
+        else if (strcmp(argv[argI], ")") == 0)
         {
             if (level >= 1)
             {
@@ -87,19 +87,19 @@ bool Foam::argList::regroupArgv(int& argc, char**& argv)
             }
             else
             {
-                args_[nArgs++] = argv[argi];
+                args_[nArgs++] = argv[argI];
             }
         }
         else if (level)
         {
             // quote each string element
             tmpString += "\"";
-            tmpString += argv[argi];
+            tmpString += argv[argI];
             tmpString += "\"";
         }
         else
         {
-            args_[nArgs++] = argv[argi];
+            args_[nArgs++] = argv[argI];
         }
     }
 
@@ -129,12 +129,18 @@ void Foam::argList::getRootCase()
         casePath = iter();
         casePath.clean();
 
-        // handle degenerate form and '-case .' like no -case specified
         if (casePath.empty() || casePath == ".")
         {
+            // handle degenerate form and '-case .' like no -case specified
             casePath = cwd();
             options_.erase("case");
         }
+        else if (casePath[0] != '/' && casePath.name() == "..")
+        {
+            // avoid relative cases ending in '..' - makes for very ugly names
+            casePath = cwd()/casePath;
+            casePath.clean();
+        }
     }
     else
     {
@@ -169,11 +175,11 @@ Foam::argList::argList
 {
     // Check if this run is a parallel run by searching for any parallel option
     // If found call runPar (might filter argv)
-    for (int argi=0; argi<argc; argi++)
+    for (int argI = 0; argI < argc; argI++)
     {
-        if (argv[argi][0] == '-')
+        if (argv[argI][0] == '-')
         {
-            const char *optionName = &argv[argi][1];
+            const char *optionName = &argv[argI][1];
 
             if (validParOptions.found(optionName))
             {
@@ -195,14 +201,14 @@ Foam::argList::argList
     int nArgs = 1;
     string argListString = args_[0];
 
-    for (int argi = 1; argi < args_.size(); argi++)
+    for (int argI = 1; argI < args_.size(); argI++)
     {
         argListString += ' ';
-        argListString += args_[argi];
+        argListString += args_[argI];
 
-        if (args_[argi][0] == '-')
+        if (args_[argI][0] == '-')
         {
-            const char *optionName = &args_[argi][1];
+            const char *optionName = &args_[argI][1];
 
             if
             (
@@ -216,8 +222,8 @@ Foam::argList::argList
                 )
             )
             {
-                argi++;
-                if (argi >= args_.size())
+                argI++;
+                if (argI >= args_.size())
                 {
                     FatalError
                         << "option " << "'-" << optionName << '\''
@@ -226,8 +232,8 @@ Foam::argList::argList
                 }
 
                 argListString += ' ';
-                argListString += args_[argi];
-                options_.insert(optionName, args_[argi]);
+                argListString += args_[argI];
+                options_.insert(optionName, args_[argI]);
             }
             else
             {
@@ -236,9 +242,9 @@ Foam::argList::argList
         }
         else
         {
-            if (nArgs != argi)
+            if (nArgs != argI)
             {
-                args_[nArgs] = args_[argi];
+                args_[nArgs] = args_[argI];
             }
             nArgs++;
         }
@@ -529,21 +535,19 @@ Foam::argList::argList
     // Set the case and case-name as an environment variable
     if (rootPath_[0] == '/')
     {
-        // absolute path
+        // absolute path - use as-is
         setEnv("FOAM_CASE", rootPath_/globalCase_, true);
-    }
-    else if (rootPath_ == ".")
-    {
-        // relative to the current working directory
-        setEnv("FOAM_CASE", cwd()/globalCase_, true);
+        setEnv("FOAM_CASENAME", globalCase_, true);
     }
     else
     {
         // qualify relative path
-        setEnv("FOAM_CASE", cwd()/rootPath_/globalCase_, true);
-    }
-    setEnv("FOAM_CASENAME", globalCase_, true);
+        fileName casePath = cwd()/rootPath_/globalCase_;
+        casePath.clean();
 
+        setEnv("FOAM_CASE", casePath, true);
+        setEnv("FOAM_CASENAME", casePath.name(), true);
+    }
 
     // Switch on signal trapping. We have to wait until after Pstream::init
     // since this sets up its own ones.