From a1ad4a812a87642ad259ff4478159e8cc8194680 Mon Sep 17 00:00:00 2001
From: Adam Lesinski <adamlesinski@google.com>
Date: Mon, 8 Jun 2015 11:41:09 -0700
Subject: AAPT2: Proguard rules generation added.

Change-Id: Ifbe79516cd9a1ade471e211a259301c63b62ac67
---
 tools/aapt2/Util.cpp | 45 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)

(limited to 'tools/aapt2/Util.cpp')

diff --git a/tools/aapt2/Util.cpp b/tools/aapt2/Util.cpp
index 7adaf1e..03ecd1a 100644
--- a/tools/aapt2/Util.cpp
+++ b/tools/aapt2/Util.cpp
@@ -102,6 +102,51 @@ StringPiece16::const_iterator findNonAlphaNumericAndNotInSet(const StringPiece16
     return endIter;
 }
 
+bool isJavaClassName(const StringPiece16& str) {
+    size_t pieces = 0;
+    for (const StringPiece16& piece : tokenize(str, u'.')) {
+        pieces++;
+        if (piece.empty()) {
+            return false;
+        }
+
+        // Can't have starting or trailing $ character.
+        if (piece.data()[0] == u'$' || piece.data()[piece.size() - 1] == u'$') {
+            return false;
+        }
+
+        if (findNonAlphaNumericAndNotInSet(piece, u"$_") != piece.end()) {
+            return false;
+        }
+    }
+    return pieces >= 2;
+}
+
+Maybe<std::u16string> getFullyQualifiedClassName(const StringPiece16& package,
+                                                 const StringPiece16& className) {
+    if (className.empty()) {
+        return {};
+    }
+
+    if (util::isJavaClassName(className)) {
+        return className.toString();
+    }
+
+    if (package.empty()) {
+        return {};
+    }
+
+    std::u16string result(package.data(), package.size());
+    if (className.data()[0] != u'.') {
+        result += u'.';
+    }
+    result.append(className.data(), className.size());
+    if (!isJavaClassName(result)) {
+        return {};
+    }
+    return result;
+}
+
 static Maybe<char16_t> parseUnicodeCodepoint(const char16_t** start, const char16_t* end) {
     char16_t code = 0;
     for (size_t i = 0; i < 4 && *start != end; i++, (*start)++) {
-- 
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