Removal of PLIB/SG from SimGear

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

diff --git a/simgear/misc/sg_path.cxx b/simgear/misc/sg_path.cxx
index eee649f7e8beb0aaafa282a1cded073cd6d627a4..bf0438cc787d93a7363571c24239a4d15959771e 100644 (file)
--- a/simgear/misc/sg_path.cxx
+++ b/simgear/misc/sg_path.cxx
@@ -3,7 +3,7 @@
 //
 // Written by Curtis L. Olson, started April 1999.
 //
-// Copyright (C) 1999  Curtis L. Olson - curt@flightgear.org
+// Copyright (C) 1999  Curtis L. Olson - http://www.flightgear.org/~curt
 //
 // This library is free software; you can redistribute it and/or
 // modify it under the terms of the GNU Library General Public
@@ -15,10 +15,9 @@
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 // Library General Public License for more details.
 //
-// You should have received a copy of the GNU Library General Public
-// License along with this library; if not, write to the
-// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-// Boston, MA  02111-1307, USA.
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 //
 // $Id$
 
@@ -26,8 +25,12 @@
 #include <simgear/compiler.h>
 
 #include <simgear_config.h>
+#include <simgear/debug/logstream.hxx>
 #include <stdio.h>
-
+#include <sys/stat.h>
+#ifdef _WIN32
+#  include <direct.h>
+#endif
 #include "sg_path.hxx"
 
 
@@ -35,24 +38,17 @@
  * define directory path separators
  */
 
-#if defined( macintosh )
-static const char sgDirPathSep = ':';
-static const char sgDirPathSepBad = '/';
-#else
 static const char sgDirPathSep = '/';
 static const char sgDirPathSepBad = '\\';
-#endif
 
-#if defined( WIN32 )
+#ifdef _WIN32
 static const char sgSearchPathSep = ';';
 #else
 static const char sgSearchPathSep = ':';
 #endif
 
 
-// If Unix, replace all ":" with "/".  If MacOS, replace all "/" with
-// ":" it should go without saying that neither of these characters
-// should be used in file or directory names.  In windoze, allow the
+// If Unix, replace all ":" with "/".  In windoze, allow the
 // second character to be a ":" for things like c:\foo\bar
 
 void
@@ -112,6 +108,11 @@ void SGPath::append( const string& p ) {
     fix();
 }
 
+//add a new path component to the existing path string
+void SGPath::add( const string& p ) {
+    append( sgSearchPathSep+p );
+}
+
 
 // concatenate a string to the end of the path without inserting a
 // path separator
@@ -149,30 +150,109 @@ string SGPath::dir() const {
 // get the base part of the path (everything but the extension.)
 string SGPath::base() const {
     int index = path.rfind(".");
-    if (index >= 0) {
+    if ((index >= 0) && (path.find("/", index) == string::npos)) {
        return path.substr(0, index);
     } else {
        return "";
     }
 }
 
-// get the extention (everything after the final ".")
+// get the extension (everything after the final ".")
+// but make sure no "/" follows the "." character (otherwise it
+// is has to be a directory name containing a ".").
 string SGPath::extension() const {
     int index = path.rfind(".");
-    if (index >= 0) {
+    if ((index >= 0)  && (path.find("/", index) == string::npos)) {
        return path.substr(index + 1);
     } else {
        return "";
     }
 }
 
-bool SGPath::exists() const {
-    FILE* fp = fopen( path.c_str(), "r");
-    if (fp == 0) {
-       return false;
+bool SGPath::exists() const
+{
+#ifdef _WIN32
+  struct _stat buf;
+
+  if (_stat(path.c_str(), &buf) < 0) {
+    return false;
+  }
+  
+  return true;
+#else
+  struct stat buf ;
+
+  if (stat(path.c_str(), &buf) < 0) {
+    return false ;
+  }
+  
+  return true;
+#endif
+}
+
+#ifdef _WIN32
+#  define sgMkDir(d,m)       _mkdir(d)
+#else
+#  define sgMkDir(d,m)       mkdir(d,m)
+#endif
+
+
+int SGPath::create_dir( mode_t mode ) {
+    string_list dirlist = sgPathSplit(dir());
+    if ( dirlist.empty() )
+        return -1;
+    string path = dirlist[0];
+    string_list path_elements = sgPathBranchSplit(path);
+    bool absolute = !path.empty() && path[0] == sgDirPathSep;
+
+    unsigned int i = 1;
+    SGPath dir = absolute ? string( 1, sgDirPathSep ) : "";
+    dir.concat( path_elements[0] );
+#ifdef _WIN32
+    if ( dir.str().find(':') != string::npos && path_elements.size() >= 2 ) {
+        dir.append( path_elements[1] );
+        i = 2;
+    }
+#endif
+    struct stat info;
+    int r;
+    for(; ( r = stat( dir.c_str(), &info ) ) == 0 && i < path_elements.size(); i++) {
+        dir.append(path_elements[i]);
+    }
+    if ( r == 0 ) {
+        return 0; // Directory already exists
+    }
+    if ( sgMkDir( dir.c_str(), mode) ) {
+        SG_LOG( SG_IO, SG_ALERT, "Error creating directory: " + dir.str() );
+        return -2;
+    }
+    for(; i < path_elements.size(); i++) {
+        dir.append(path_elements[i]);
+        if ( sgMkDir( dir.c_str(), mode) ) {
+            SG_LOG( SG_IO, SG_ALERT, "Error creating directory: " + dir.str() );
+            return -2;
+        }
+    }
+
+    return 0;
+}
+
+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 );
     }
-    fclose(fp);
-    return true;
+    return path_elements;
 }
 
 
@@ -189,7 +269,8 @@ string_list sgPathSplit( const string &search_path ) {
             result.push_back( tmp.substr(0, index) );
             tmp = tmp.substr( index + 1 );
         } else {
-            result.push_back( tmp );
+            if ( !tmp.empty() )
+                result.push_back( tmp );
             done = true;
         }
     }