add PyUnicode_DecodeLatin1 and PyUnicode_EncodeFSDefault apis

Author: timfel

graalpython/com.oracle.graal.python.cext/src/unicodeobject.c

@@ -227,6 +227,11 @@ PyObject* PyUnicode_FromString(const char* o) {
     return to_sulong(polyglot_from_string(o, SRC_CS));
 }
 
+UPCALL_ID(PyUnicode_EncodeFSDefault);
+PyObject* PyUnicode_EncodeFSDefault(PyObject* o) {
+    return UPCALL_CEXT_O(_jls_PyUnicode_EncodeFSDefault, native_to_java(o));
+}
+
 PyObject* PyUnicode_DecodeFSDefault(const char* o) {
     // TODO: this implementation does not honor Py_FileSystemDefaultEncoding and Py_FileSystemDefaultEncodeErrors
     return to_sulong(polyglot_from_string(o, "utf-8"));
@@ -584,6 +589,10 @@ PyObject * PyUnicode_DecodeASCII(const char *s, Py_ssize_t size, const char *err
 	return PyUnicode_Decode(s, size, "ascii", errors);
 }
 
+PyObject * PyUnicode_DecodeLatin(const char *s, Py_ssize_t size, const char *errors) {
+	return PyUnicode_Decode(s, size, "latin1", errors);
+}
+
 UPCALL_ID(PyUnicode_Tailmatch);
 Py_ssize_t PyUnicode_Tailmatch(PyObject *str, PyObject *substr, Py_ssize_t start, Py_ssize_t end, int direction) {
 	return UPCALL_CEXT_L(_jls_PyUnicode_Tailmatch, native_to_java(str), native_to_java(substr), start, end, direction);

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/modules/cext/PythonCextUnicodeBuiltins.java

@@ -68,11 +68,13 @@
 import com.oracle.graal.python.builtins.objects.PNone;
 import com.oracle.graal.python.builtins.objects.bytes.BytesBuiltins;
 import com.oracle.graal.python.builtins.objects.bytes.BytesBuiltins.DecodeNode;
+import com.oracle.graal.python.builtins.objects.bytes.PBytes;
 import com.oracle.graal.python.builtins.objects.bytes.PBytesLike;
 import com.oracle.graal.python.builtins.objects.cext.capi.CExtNodes;
 import com.oracle.graal.python.builtins.objects.cext.capi.CExtNodes.PRaiseNativeNode;
 import com.oracle.graal.python.builtins.objects.cext.capi.CExtNodes.ToNewRefNode;
 import com.oracle.graal.python.builtins.objects.cext.capi.CExtNodes.TransformExceptionToNativeNode;
+import com.oracle.graal.python.builtins.objects.cext.common.CExtCommonNodes.EncodeNativeStringNode;
 import com.oracle.graal.python.builtins.objects.cext.common.CExtCommonNodes.GetByteArrayNode;
 import com.oracle.graal.python.builtins.objects.ints.PInt;
 import com.oracle.graal.python.builtins.objects.memoryview.PMemoryView;
@@ -109,6 +111,7 @@
 import com.oracle.graal.python.util.OverflowException;
 import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;
 import com.oracle.truffle.api.dsl.Cached;
+import com.oracle.truffle.api.dsl.Cached.Shared;
 import com.oracle.truffle.api.dsl.GenerateNodeFactory;
 import com.oracle.truffle.api.dsl.NodeFactory;
 import com.oracle.truffle.api.dsl.Specialization;
@@ -815,4 +818,23 @@ Object doDecode(VirtualFrame frame, PMemoryView mv, String encoding, String erro
             }
         }
     }
+
+    @Builtin(name = "PyUnicode_EncodeFSDefault", minNumOfPositionalArgs = 1)
+    @GenerateNodeFactory
+    abstract static class PyUnicodeEncodeFSDefaultNode extends PythonBuiltinNode {
+        @Specialization
+        PBytes fromObject(String s,
+                        @Shared("encode") @Cached EncodeNativeStringNode encode) {
+            byte[] array = encode.execute(StandardCharsets.UTF_8, s, "replace");
+            return factory().createBytes(array);
+        }
+
+        @Specialization
+        PBytes fromObject(Object s,
+                        @Cached CastToJavaStringNode castStr,
+                        @Shared("encode") @Cached EncodeNativeStringNode encode) {
+            byte[] array = encode.execute(StandardCharsets.UTF_8, castStr.execute(s), "replace");
+            return factory().createBytes(array);
+        }
+    }
 }