WS-1518: remove guava from rosette-api

Author: Katsuya-Tomioka

api/pom.xml

@@ -61,11 +61,6 @@
             <artifactId>httpmime</artifactId>
             <version>${http-components-version}</version>
         </dependency>
-        <dependency>
-            <groupId>com.google.guava</groupId>
-            <artifactId>guava</artifactId>
-            <scope>compile</scope>
-        </dependency>
         <dependency>
             <groupId>org.slf4j</groupId>
             <artifactId>slf4j-api</artifactId>

api/src/main/java/com/basistech/rosette/api/HttpRosetteAPI.java

@@ -35,7 +35,6 @@
 import com.fasterxml.jackson.databind.DeserializationFeature;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.fasterxml.jackson.databind.ObjectWriter;
-import com.google.common.io.ByteStreams;
 import org.apache.http.Header;
 import org.apache.http.HttpEntity;
 import org.apache.http.HttpHeaders;
@@ -61,6 +60,7 @@
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
@@ -159,7 +159,19 @@ private static String getVersion() {
      * @throws IOException
      */
     private static byte[] getBytes(InputStream is) throws IOException {
-        return ByteStreams.toByteArray(is);
+        ByteArrayOutputStream out = new ByteArrayOutputStream();
+
+        byte[] buf = new byte[4096];
+        long total = 0;
+
+        while (true) {
+            int r = is.read(buf);
+            if (r == -1) {
+                return out.toByteArray();
+            }
+            out.write(buf, 0, r);
+            total += (long)r;
+        }
     }
 
     private void initClient(String key, List<Header> additionalHeaders) {