math: Move lerp function into SGMisc.

[simgear.git] / simgear / misc / sg_dir.cxx

diff --git a/simgear/misc/sg_dir.cxx b/simgear/misc/sg_dir.cxx
index 95f9949d9893e55800f69c706c27a5d9cb5caef2..1514c9501a38497cd7a1080e078fc5ea2110753b 100644 (file)
--- a/simgear/misc/sg_dir.cxx
+++ b/simgear/misc/sg_dir.cxx
@@ -47,22 +47,37 @@ using std::string;
 namespace simgear
 {
 
-Dir::Dir()
+Dir::Dir() :
+    _removeOnDestroy(false)
 {
 }
 
 Dir::Dir(const SGPath& path) :
-  _path(path)
+  _path(path),
+  _removeOnDestroy(false)
 {
     _path.set_cached(false); // disable caching, so create/remove work
 }
 
 Dir::Dir(const Dir& rel, const SGPath& relPath) :
-  _path(rel.file(relPath.str()))
+  _path(rel.file(relPath.str())),
+  _removeOnDestroy(false)
 {
     _path.set_cached(false); // disable caching, so create/remove work
 }
 
+Dir::~Dir()
+{
+    if (_removeOnDestroy) {
+        remove(true);
+    }
+}
+
+void Dir::setRemoveOnDestroy()
+{
+    _removeOnDestroy = true;
+}
+
 Dir Dir::current()
 {
 #ifdef _WIN32
@@ -79,7 +94,7 @@ Dir Dir::tempDir(const std::string& templ)
 {
 #ifdef HAVE_MKDTEMP
     char buf[1024];
-    char* tempPath = ::getenv("TMPDIR");
+    const char* tempPath = ::getenv("TMPDIR");
     if (!tempPath) {
         tempPath = "/tmp/";
     }
@@ -250,7 +265,7 @@ bool Dir::create(mode_t mode)
     
 // recursively create parent directories
     Dir pr(parent());
-    if (!pr.exists()) {
+    if (!pr.path().isNull() && !pr.exists()) {
         bool ok = pr.create(mode);
         if (!ok) {
             return false;