Update the code a bit more, add a function to retreive the last error string and...

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

diff --git a/simgear/misc/sg_path.cxx b/simgear/misc/sg_path.cxx
index dc9be8eb627350b7e06b6c5e03bc5255f940d73a..54f7138dbcde9167cb979b3a93a74a769107c340 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
@@ -23,12 +23,33 @@
 // $Id$
 
 
+#include <simgear/compiler.h>
+
 #include <simgear_config.h>
 #include <stdio.h>
 
 #include "sg_path.hxx"
 
 
+/**
+ * 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 ) && !defined(__CYGWIN__)
+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
@@ -44,8 +65,8 @@ SGPath::fix()
            continue;
        }
 #endif
-       if ( path[i] == SG_BAD_PATH_SEP ) {
-           path[i] = SG_PATH_SEP;
+       if ( path[i] == sgDirPathSepBad ) {
+           path[i] = sgDirPathSep;
        }
     }
 }
@@ -83,14 +104,19 @@ void SGPath::append( const string& p ) {
     if ( path.size() == 0 ) {
        path = p;
     } else {
-       if ( p[0] != SG_PATH_SEP ) {
-           path += SG_PATH_SEP;
+       if ( p[0] != sgDirPathSep ) {
+           path += sgDirPathSep;
        }
        path += 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
@@ -106,7 +132,7 @@ void SGPath::concat( const string& p ) {
 
 // Get the file part of the path (everything after the last path sep)
 string SGPath::file() const {
-    int index = path.rfind(SG_PATH_SEP);
+    int index = path.rfind(sgDirPathSep);
     if (index >= 0) {
        return path.substr(index + 1);
     } else {
@@ -117,7 +143,7 @@ string SGPath::file() const {
 
 // get the directory part of the path.
 string SGPath::dir() const {
-    int index = path.rfind(SG_PATH_SEP);
+    int index = path.rfind(sgDirPathSep);
     if (index >= 0) {
        return path.substr(0, index);
     } else {
@@ -128,7 +154,7 @@ 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 "";
@@ -136,9 +162,11 @@ string SGPath::base() const {
 }
 
 // get the extention (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 "";
@@ -153,3 +181,26 @@ bool SGPath::exists() const {
     fclose(fp);
     return true;
 }
+
+
+string_list sgPathSplit( const string &search_path ) {
+    string tmp = search_path;
+    string_list result;
+    result.clear();
+
+    bool done = false;
+
+    while ( !done ) {
+        int index = tmp.find(sgSearchPathSep);
+        if (index >= 0) {
+            result.push_back( tmp.substr(0, index) );
+            tmp = tmp.substr( index + 1 );
+        } else {
+            if ( !tmp.empty() )
+                result.push_back( tmp );
+            done = true;
+        }
+    }
+
+    return result;
+}