From 9289cfdde99971b76f1ec71d3a9f5a0c9a9afc3b Mon Sep 17 00:00:00 2001
From: ehofman <ehofman>
Date: Mon, 19 Dec 2005 10:22:27 +0000
Subject: [PATCH] Frederic Bouvier:

Fix a problem where the directory being created is made relative when in fact
it's absolute. It also tightens things a bit on the Windows side.

Erik:

Make the section that splits up the directory in a lists of parent directories
a standalone function.
---
 simgear/misc/sg_path.cxx | 42 ++++++++++++++++++++++++----------------
 simgear/misc/sg_path.hxx | 11 +++++++++--
 2 files changed, 34 insertions(+), 19 deletions(-)

diff --git a/simgear/misc/sg_path.cxx b/simgear/misc/sg_path.cxx
index a72175ab..cee7df45 100644
--- a/simgear/misc/sg_path.cxx
+++ b/simgear/misc/sg_path.cxx
@@ -197,25 +197,14 @@ bool SGPath::exists() const {
 void SGPath::create_dir( mode_t mode ) {
     string_list dirlist = sgPathSplit(dir());
     string path = dirlist[0];
-    string_list path_elements;
-    string element;
-    while ( path.size() ) {
-        size_t p = path.find( sgDirPathSep );
-        if ( p != string::npos ) {
-            element = path.substr( 0, p );
-            path.erase( 0, p + 1 );
-        } else {
-            element = path;
-            path = "";
-        }
-        if ( element.size() )
-            path_elements.push_back( element );
-    }
+    string_list path_elements = sgPathBranchSplit(path);
+    bool absolute = !path.empty() && path[0] == sgDirPathSep;
 
     int i = 1;
-    SGPath dir = path_elements[0];
-#ifdef WIN32
-    if ( path_elements.size() >= 2 ) {
+    SGPath dir = absolute ? string( 1, sgDirPathSep ) : "";
+    dir.concat( path_elements[0] );
+#ifdef _MSC_VER
+    if ( dir.str().find(':') != string::npos && path_elements.size() >= 2 ) {
         dir.append( path_elements[1] );
         i = 2;
     }
@@ -241,6 +230,25 @@ void SGPath::create_dir( mode_t mode ) {
     }
 }
 
+string_list sgPathBranchSplit( const string &dirpath ) {
+    string_list path_elements;
+    string element, path = dirpath;
+    while ( path.size() ) {
+        size_t p = path.find( sgDirPathSep );
+        if ( p != string::npos ) {
+            element = path.substr( 0, p );
+            path.erase( 0, p + 1 );
+        } else {
+            element = path;
+            path = "";
+        }
+        if ( element.size() )
+            path_elements.push_back( element );
+    }
+    return path_elements;
+}
+
+
 string_list sgPathSplit( const string &search_path ) {
     string tmp = search_path;
     string_list result;
diff --git a/simgear/misc/sg_path.hxx b/simgear/misc/sg_path.hxx
index f843061b..363884d4 100644
--- a/simgear/misc/sg_path.hxx
+++ b/simgear/misc/sg_path.hxx
@@ -120,12 +120,14 @@ public:
      */
     string extension() const;
 
-    /** Get the path string
+    /**
+     * Get the path string
      * @return path string
      */
     string str() const { return path; }
 
-    /** Get the path string
+    /**
+     * Get the path string
      * @return path in "C" string (ptr to char array) form.
      */
     const char* c_str() { return path.c_str(); }
@@ -148,6 +150,11 @@ private:
 };
 
 
+/**
+ * Split a directory string into a list of it's parent directories.
+ */
+string_list sgPathBranchSplit( const string &path );
+
 /**
  * Split a directory search path into a vector of individual paths
  */