Add support for building split APKs

Build multiple APKs, each containing a disjoint subset
of configurations. These can then be loaded into the device
AssetManager and should operate as if they were never split.

Use the idea of building multiple sets of files, where each
set represents an APK. An ApkBuilder can place files
in a set based on its configuration, but you can actually
add directly to a set, in the case of the resources.arsc and
generated AndroidManifest.xml for splits.

Change-Id: Ic65d3f0ac1bbd290185695b9971d425c85ab1de3

1 files changed, 64 insertions, 0 deletions

diff --git a/tools/aapt/AaptUtil.cpp b/tools/aapt/AaptUtil.cpp
new file mode 100644
index 000000000000..293e144b71fe
--- /dev/null
+++ b/tools/aapt/AaptUtil.cpp
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * 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.
+ */
+
+#include "AaptUtil.h"
+
+using android::Vector;
+using android::String8;
+
+namespace AaptUtil {
+
+Vector<String8> split(const String8& str, const char sep) {
+    Vector<String8> parts;
+    const char* p = str.string();
+    const char* q;
+
+    while (true) {
+        q = strchr(p, sep);
+        if (q == NULL) {
+            parts.add(String8(p, strlen(p)));
+            return parts;
+        }
+
+        parts.add(String8(p, q-p));
+        p = q + 1;
+    }
+    return parts;
+}
+
+Vector<String8> splitAndLowerCase(const String8& str, const char sep) {
+    Vector<String8> parts;
+    const char* p = str.string();
+    const char* q;
+
+    while (true) {
+        q = strchr(p, sep);
+        if (q == NULL) {
+            String8 val(p, strlen(p));
+            val.toLower();
+            parts.add(val);
+            return parts;
+        }
+
+        String8 val(p, q-p);
+        val.toLower();
+        parts.add(val);
+        p = q + 1;
+    }
+    return parts;
+}
+
+} // namespace AaptUtil