Stamp platform version code into app Apks

The versionCode of theframework resources that an app is built against
gets stamped inside an app's AndroidManifest.xml in the <manifest>
tag as "platformBuildVersionCode" and "platformBuildVersionName"
attributes.

Bug:17207635
Change-Id: Id573c3dffcbca38eec9c0eb3e89f4a547e3361d3

1 files changed, 184 insertions, 0 deletions

diff --git a/tools/aapt/AaptXml.cpp b/tools/aapt/AaptXml.cpp
new file mode 100644
index 000000000000..708e4054e63a
--- /dev/null
+++ b/tools/aapt/AaptXml.cpp
@@ -0,0 +1,184 @@
+/*
+ * 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 <androidfw/ResourceTypes.h>
+#include <utils/String8.h>
+
+#include "AaptXml.h"
+
+using namespace android;
+
+namespace AaptXml {
+
+static String8 getStringAttributeAtIndex(const ResXMLTree& tree, ssize_t attrIndex,
+        String8* outError) {
+    Res_value value;
+    if (tree.getAttributeValue(attrIndex, &value) < 0) {
+        if (outError != NULL) {
+            *outError = "could not find attribute at index";
+        }
+        return String8();
+    }
+
+    if (value.dataType != Res_value::TYPE_STRING) {
+        if (outError != NULL) {
+            *outError = "attribute is not a string value";
+        }
+        return String8();
+    }
+
+    size_t len;
+    const uint16_t* str = tree.getAttributeStringValue(attrIndex, &len);
+    return str ? String8(str, len) : String8();
+}
+
+static int32_t getIntegerAttributeAtIndex(const ResXMLTree& tree, ssize_t attrIndex,
+    int32_t defValue, String8* outError) {
+    Res_value value;
+    if (tree.getAttributeValue(attrIndex, &value) < 0) {
+        if (outError != NULL) {
+            *outError = "could not find attribute at index";
+        }
+        return defValue;
+    }
+
+    if (value.dataType < Res_value::TYPE_FIRST_INT
+            || value.dataType > Res_value::TYPE_LAST_INT) {
+        if (outError != NULL) {
+            *outError = "attribute is not an integer value";
+        }
+        return defValue;
+    }
+    return value.data;
+}
+
+
+ssize_t indexOfAttribute(const ResXMLTree& tree, uint32_t attrRes) {
+    size_t attrCount = tree.getAttributeCount();
+    for (size_t i = 0; i < attrCount; i++) {
+        if (tree.getAttributeNameResID(i) == attrRes) {
+            return (ssize_t)i;
+        }
+    }
+    return -1;
+}
+
+String8 getAttribute(const ResXMLTree& tree, const char* ns,
+        const char* attr, String8* outError) {
+    ssize_t idx = tree.indexOfAttribute(ns, attr);
+    if (idx < 0) {
+        return String8();
+    }
+    return getStringAttributeAtIndex(tree, idx, outError);
+}
+
+String8 getAttribute(const ResXMLTree& tree, uint32_t attrRes, String8* outError) {
+    ssize_t idx = indexOfAttribute(tree, attrRes);
+    if (idx < 0) {
+        return String8();
+    }
+    return getStringAttributeAtIndex(tree, idx, outError);
+}
+
+String8 getResolvedAttribute(const ResTable& resTable, const ResXMLTree& tree,
+        uint32_t attrRes, String8* outError) {
+    ssize_t idx = indexOfAttribute(tree, attrRes);
+    if (idx < 0) {
+        return String8();
+    }
+    Res_value value;
+    if (tree.getAttributeValue(idx, &value) != NO_ERROR) {
+        if (value.dataType == Res_value::TYPE_STRING) {
+            size_t len;
+            const uint16_t* str = tree.getAttributeStringValue(idx, &len);
+            return str ? String8(str, len) : String8();
+        }
+        resTable.resolveReference(&value, 0);
+        if (value.dataType != Res_value::TYPE_STRING) {
+            if (outError != NULL) {
+                *outError = "attribute is not a string value";
+            }
+            return String8();
+        }
+    }
+    size_t len;
+    const Res_value* value2 = &value;
+    const char16_t* str = resTable.valueToString(value2, 0, NULL, &len);
+    return str ? String8(str, len) : String8();
+}
+
+int32_t getIntegerAttribute(const ResXMLTree& tree, const char* ns,
+        const char* attr, int32_t defValue, String8* outError) {
+    ssize_t idx = tree.indexOfAttribute(ns, attr);
+    if (idx < 0) {
+        return defValue;
+    }
+    return getIntegerAttributeAtIndex(tree, idx, defValue, outError);
+}
+
+int32_t getIntegerAttribute(const ResXMLTree& tree, uint32_t attrRes, int32_t defValue,
+        String8* outError) {
+    ssize_t idx = indexOfAttribute(tree, attrRes);
+    if (idx < 0) {
+        return defValue;
+    }
+    return getIntegerAttributeAtIndex(tree, idx, defValue, outError);
+}
+
+int32_t getResolvedIntegerAttribute(const ResTable& resTable, const ResXMLTree& tree,
+        uint32_t attrRes, int32_t defValue, String8* outError) {
+    ssize_t idx = indexOfAttribute(tree, attrRes);
+    if (idx < 0) {
+        return defValue;
+    }
+    Res_value value;
+    if (tree.getAttributeValue(idx, &value) != NO_ERROR) {
+        if (value.dataType == Res_value::TYPE_REFERENCE) {
+            resTable.resolveReference(&value, 0);
+        }
+        if (value.dataType < Res_value::TYPE_FIRST_INT
+                || value.dataType > Res_value::TYPE_LAST_INT) {
+            if (outError != NULL) {
+                *outError = "attribute is not an integer value";
+            }
+            return defValue;
+        }
+    }
+    return value.data;
+}
+
+void getResolvedResourceAttribute(const ResTable& resTable, const ResXMLTree& tree,
+        uint32_t attrRes, Res_value* outValue, String8* outError) {
+    ssize_t idx = indexOfAttribute(tree, attrRes);
+    if (idx < 0) {
+        if (outError != NULL) {
+            *outError = "attribute could not be found";
+        }
+        return;
+    }
+    if (tree.getAttributeValue(idx, outValue) != NO_ERROR) {
+        if (outValue->dataType == Res_value::TYPE_REFERENCE) {
+            resTable.resolveReference(outValue, 0);
+        }
+        // The attribute was found and was resolved if need be.
+        return;
+    }
+    if (outError != NULL) {
+        *outError = "error getting resolved resource attribute";
+    }
+}
+
+} // namespace AaptXml