test: original import for varint

Pierre-Alexandre Meyer · Pierre-Alexandre Meyer · commit f422039a90b6 · 2011-07-20T12:19:29.000-07:00
Signed-off-by: Pierre-Alexandre Meyer &lt;pierre@ning.com&gt;
diff --git a/c/src/smile_decode.c b/c/src/smile_decode.c
@@ -24,18 +24,7 @@
 #include <string.h>
 
 #include "smile_decode.h"
-
-static long parse(u8 **msg) {
-    long x = 0;
-    while(!(**msg & 0x80)) {
-        x <<= 7;
-        x |= **msg;
-        (*msg)++;
-    }
-    x |= **msg;
-    (*msg)++;
-    return x;
-}
+#include "smile_utils.h"
 
 void smile_decode_key(u8** orig_data, struct content_handler* handler)
 {
diff --git a/c/src/smile_utils.c b/c/src/smile_utils.c
@@ -0,0 +1,38 @@
+/*
+ * Copyright 2011 Pierre-Alexandre Meyer
+ *
+ * Pierre-Alexandre Meyer licenses this file to you under the Apache License,
+ * version 2.0 (the "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at:
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ */
+
+#include "smile_utils.h"
+
+long varint_decode(u8 **msg)
+{
+    // TODO - it doesn't work yet
+    return 0L;
+}
+
+long varint_decode_buffer(u8* input)
+{
+    u8* msg = input;
+    long x = 0;
+    while(!(*msg & 0x80)) {
+        x <<= 7;
+        x |= *msg;
+        msg++;
+    }
+    // last byte only has 6 payload bits
+    x <<= 6;
+    x |= (*msg & 0x3F);
+    return x;
+}
diff --git a/c/src/smile_utils.h b/c/src/smile_utils.h
@@ -0,0 +1,9 @@
+#ifndef _SMILE_UTILS_H_
+#define _SMILE_UTILS_H_
+
+#include "api.h"
+
+long varint_decode(u8**);
+long varint_decode_buffer(u8*);
+
+#endif
diff --git a/c/test/test_varint.c b/c/test/test_varint.c
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2011 Pierre-Alexandre Meyer
+ *
+ * Pierre-Alexandre Meyer licenses this file to you under the Apache License,
+ * version 2.0 (the "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at:
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ */
+
+#include <errno.h>
+#include <stdio.h>
+
+#include "../src/api.h"
+#include "../src/smile_utils.h"
+
+static int pass = 0;
+
+#define ASSERT_EQUAL(expected, actual) \
+    if (expected != actual) { \
+        fprintf (stderr, "Test failure: expected %d, got %d\n", expected, actual); \
+        exit(1); \
+    } else { \
+        pass++; \
+    }
+
+void test_varint()
+{
+    u8 buf[2];
+    buf[0] = 0x02;
+    buf[1] = 0xAC;
+
+    // Standard example, see
+    // http://code.google.com/apis/protocolbuffers/docs/encoding.html#varints
+    ASSERT_EQUAL(300, varint_decode_buffer(buf));
+}
+
+int main()
+{
+    test_varint();
+
+    printf("Tests passed: %d assertions run.\n", pass);
+    exit(0);
+}
