[GR-14416] Use file separators from Truffle filesystem

PullRequest: graalpython/447

Author: timfel

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/Python3Core.java

@@ -599,9 +599,9 @@ private void addBuiltinsTo(PythonObject obj, PythonBuiltins builtinsForObj) {
 
     @TruffleBoundary
     private Source getSource(String basename, String prefix) {
-        String suffix = FILE_SEPARATOR + basename + ".py";
         PythonContext ctxt = getContext();
         Env env = ctxt.getEnv();
+        String suffix = env.getFileNameSeparator() + basename + ".py";
         TruffleFile file = env.getTruffleFile(prefix + suffix);
         try {
             if (file.exists()) {

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/modules/ImpModuleBuiltins.java

@@ -231,7 +231,7 @@ private void ensureCapiWasLoaded() {
             if (!ctxt.capiWasLoaded()) {
                 Env env = ctxt.getEnv();
                 CompilerDirectives.transferToInterpreterAndInvalidate();
-                TruffleFile capiFile = env.getTruffleFile(PythonCore.getCoreHome(env) + PythonCore.FILE_SEPARATOR + "capi.bc");
+                TruffleFile capiFile = env.getTruffleFile(PythonCore.getCoreHome(env) + env.getFileNameSeparator() + "capi.bc");
                 Object capi = null;
                 try {
                     SourceBuilder capiSrcBuilder = Source.newBuilder(LLVM_LANGUAGE, capiFile);

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/modules/SysModuleBuiltins.java

@@ -216,7 +216,7 @@ public void postInitialize(PythonCore core) {
             path[pathIdx++] = getScriptPath(env, args);
         }
         path[pathIdx++] = PythonCore.getStdlibHome(env);
-        path[pathIdx++] = PythonCore.getCoreHome(env) + PythonCore.FILE_SEPARATOR + "modules";
+        path[pathIdx++] = PythonCore.getCoreHome(env) + env.getFileNameSeparator() + "modules";
         PList sysPaths = core.factory().createList(path);
         sys.setAttribute("path", sysPaths);
     }

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/runtime/PythonCore.java

@@ -42,7 +42,6 @@
  * Storage for initialized Python built-in modules and types.
  */
 public interface PythonCore extends ParserErrorCallback {
-    public static final String FILE_SEPARATOR = File.separator;
     public static final String PATH_SEPARATOR = File.pathSeparator;
     static final String PREFIX = "/";
     static final String LIB_PYTHON_3 = "/lib-python/3";