From: Alexis Laferrière <alexis.laf@xymus.net>
Date: Wed, 30 Dec 2015 21:26:43 +0000 (-0500)
Subject: lib/android: implement `TextAsset`
X-Git-Tag: v0.8~15^2~4
X-Git-Url: http://nitlanguage.org

lib/android: implement `TextAsset`

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>
---

diff --git a/lib/android/android.nit b/lib/android/android.nit
index f083dd9..b5aa04f 100644
--- a/lib/android/android.nit
+++ b/lib/android/android.nit
@@ -24,6 +24,7 @@ import platform
 import native_app_glue
 import dalvik
 private import log
+private import assets
 
 redef class App
 	redef fun init_window
diff --git a/lib/android/assets.nit b/lib/android/assets.nit
new file mode 100644
index 0000000..84ec235
--- /dev/null
+++ b/lib/android/assets.nit
@@ -0,0 +1,70 @@
+# This file is part of NIT ( http://www.nitlanguage.org ).
+#
+# Licensed 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.
+
+# Implementation of `app::assets`
+#
+# This module is a client of `assets_and_resources` as the latter
+# covers the services of Android.
+module assets
+
+intrude import assets_and_resources
+
+redef class TextAsset
+	redef fun load
+	do
+		jni_env.push_local_frame 8
+
+		var manager = app.asset_manager
+		var stream = manager.open(path)
+		if stream.is_java_null then
+			self.error = new Error("Failed to open asset at '{path}'")
+			jni_env.pop_local_frame
+			self.to_s = ""
+			return ""
+		end
+
+		var text = stream.read_all
+		stream.close
+		if text.is_java_null then
+			self.error = new Error("Failed to read content of asset file at '{path}'")
+			jni_env.pop_local_frame
+			self.to_s = ""
+			return ""
+		end
+
+		var content = text.to_s
+		jni_env.pop_local_frame
+		self.to_s = content
+		return content
+	end
+end
+
+redef class NativeInputStream
+
+	# Read and return all the content of this stream
+	private fun read_all: JavaString in "Java" `{
+		// `available` returns the n of bytes currently available, not the total.
+		// This may cause problems in the future with large asset files.
+		try {
+			int size = self.available();
+			byte[] bytes = new byte[size];
+			self.read(bytes, 0, size);
+
+			return new String(bytes);
+		} catch (java.lang.Exception exception) {
+			exception.printStackTrace();
+			return null;
+		}
+	`}
+end
diff --git a/lib/android/ui/ui.nit b/lib/android/ui/ui.nit
index 656e209..90c513b 100644
--- a/lib/android/ui/ui.nit
+++ b/lib/android/ui/ui.nit
@@ -27,6 +27,7 @@ import nit_activity
 
 import app::ui
 private import data_store
+import assets
 
 redef class Control
 	# The Android element used to implement `self`
diff --git a/lib/java/io.nit b/lib/java/io.nit
index 40d3f02..c13abe0 100644
--- a/lib/java/io.nit
+++ b/lib/java/io.nit
@@ -168,4 +168,15 @@ extern class NativeInputStream in "Java" `{ java.io.InputStream `}
 			e.printStackTrace();
 		}
 	`}
+
+	# HACK for bug #845
+	redef fun new_global_ref import sys, Sys.jni_env `{
+		Sys sys = NativeInputStream_sys(self);
+		JNIEnv *env = Sys_jni_env(sys);
+		return (*env)->NewGlobalRef(env, self);
+	`}
+
+	redef fun pop_from_local_frame_with_env(jni_env) `{
+		return (*jni_env)->PopLocalFrame(jni_env, self);
+	`}
 end