commit f8aea99385df8373b6edd6d5dd1d15b7b36b525b
author Xavier Ducrohet <xav@android.com> Thu Feb 02 17:18:18 2012 -0800
committer Xavier Ducrohet <xav@android.com> Mon Feb 06 11:25:28 2012 -0800
tree 0aaaca523a54eff95fd89e4c1a711da9109e5c75
parent 633de7bab9397c4f7591c5514d903305254451b2

Make aapt ignore tools-related data.

This patchset introduces a new standard namespace http://schemas.android.com/tools
which will be used for tools specific XML attributes.
Any attributes using this namespace will not be compiled into the binary XML file.

The namespace node is also not written at all, and its string is not collected
to ensure that there is no impact on the devices.

(cherry picked from commit a5d5e9d906583ebeb590ca200ca9840302a5cd1a)

Change-Id: I62937b8bc34c07ac544930aa8eadd7797e0179d5

tools/aapt/XMLNode.cpp

diff --git a/tools/aapt/XMLNode.cpp b/tools/aapt/XMLNode.cpp
index c0d7427..95a68d1 100644
--- a/tools/aapt/XMLNode.cpp
+++ b/tools/aapt/XMLNode.cpp
@@ -45,6 +45,7 @@
 
 static const String16 RESOURCES_PREFIX(RESOURCES_ROOT_NAMESPACE);
 static const String16 RESOURCES_PRV_PREFIX(RESOURCES_ROOT_PRV_NAMESPACE);
+static const String16 RESOURCES_TOOLS_NAMESPACE("http://schemas.android.com/tools");
 
 String16 getNamespaceResourcePackage(String16 namespaceUri, bool* outIsPublic)
 {
@@ -761,13 +762,16 @@
         SourcePos(mFilename, getStartLineNumber()).error("Child to CDATA node.");
         return UNKNOWN_ERROR;
     }
-    attribute_entry e;
-    e.index = mNextAttributeIndex++;
-    e.ns = ns;
-    e.name = name;
-    e.string = value;
-    mAttributes.add(e);
-    mAttributeOrder.add(e.index, mAttributes.size()-1);
+
+    if (ns != RESOURCES_TOOLS_NAMESPACE) {
+        attribute_entry e;
+        e.index = mNextAttributeIndex++;
+        e.ns = ns;
+        e.name = name;
+        e.string = value;
+        mAttributes.add(e);
+        mAttributeOrder.add(e.index, mAttributes.size()-1);
+    }
     return NO_ERROR;
 }
 
@@ -1215,11 +1219,13 @@
     collect_attr_strings(dest, outResIds, true);
     
     int i;
-    if (mNamespacePrefix.size() > 0) {
-        dest->add(mNamespacePrefix, true);
-    }
-    if (mNamespaceUri.size() > 0) {
-        dest->add(mNamespaceUri, true);
+    if (RESOURCES_TOOLS_NAMESPACE != mNamespaceUri) {
+        if (mNamespacePrefix.size() > 0) {
+            dest->add(mNamespacePrefix, true);
+        }
+        if (mNamespaceUri.size() > 0) {
+            dest->add(mNamespaceUri, true);
+        }
     }
     if (mElementName.size() > 0) {
         dest->add(mElementName, true);
@@ -1338,6 +1344,7 @@
     const void* extData = NULL;
     size_t extSize = 0;
     ResXMLTree_attribute attr;
+    bool writeCurrentNode = true;
 
     const size_t NA = mAttributes.size();
     const size_t NC = mChildren.size();
@@ -1350,7 +1357,7 @@
     const String16 style16("style");
 
     const type type = getType();
-    
+
     memset(&node, 0, sizeof(node));
     memset(&attr, 0, sizeof(attr));
     node.header.headerSize = htods(sizeof(node));
@@ -1395,17 +1402,21 @@
             }
         }
     } else if (type == TYPE_NAMESPACE) {
-        node.header.type = htods(RES_XML_START_NAMESPACE_TYPE);
-        extData = &namespaceExt;
-        extSize = sizeof(namespaceExt);
-        memset(&namespaceExt, 0, sizeof(namespaceExt));
-        if (mNamespacePrefix.size() > 0) {
-            namespaceExt.prefix.index = htodl(strings.offsetForString(mNamespacePrefix));
+        if (mNamespaceUri == RESOURCES_TOOLS_NAMESPACE) {
+            writeCurrentNode = false;
         } else {
-            namespaceExt.prefix.index = htodl((uint32_t)-1);
+            node.header.type = htods(RES_XML_START_NAMESPACE_TYPE);
+            extData = &namespaceExt;
+            extSize = sizeof(namespaceExt);
+            memset(&namespaceExt, 0, sizeof(namespaceExt));
+            if (mNamespacePrefix.size() > 0) {
+                namespaceExt.prefix.index = htodl(strings.offsetForString(mNamespacePrefix));
+            } else {
+                namespaceExt.prefix.index = htodl((uint32_t)-1);
+            }
+            namespaceExt.prefix.index = htodl(strings.offsetForString(mNamespacePrefix));
+            namespaceExt.uri.index = htodl(strings.offsetForString(mNamespaceUri));
         }
-        namespaceExt.prefix.index = htodl(strings.offsetForString(mNamespacePrefix));
-        namespaceExt.uri.index = htodl(strings.offsetForString(mNamespaceUri));
         LOG_ALWAYS_FATAL_IF(NA != 0, "Namespace nodes can't have attributes!");
     } else if (type == TYPE_CDATA) {
         node.header.type = htods(RES_XML_CDATA_TYPE);
@@ -1422,9 +1433,11 @@
 
     node.header.size = htodl(sizeof(node) + extSize + (sizeof(attr)*NA));
 
-    dest->writeData(&node, sizeof(node));
-    if (extSize > 0) {
-        dest->writeData(extData, extSize);
+    if (writeCurrentNode) {
+        dest->writeData(&node, sizeof(node));
+        if (extSize > 0) {
+            dest->writeData(extData, extSize);
+        }
     }
 
     for (i=0; i<NA; i++) {
@@ -1476,12 +1489,14 @@
         dest->writeData(&node, sizeof(node));
         dest->writeData(&endElementExt, sizeof(endElementExt));
     } else if (type == TYPE_NAMESPACE) {
-        node.header.type = htods(RES_XML_END_NAMESPACE_TYPE);
-        node.lineNumber = htodl(getEndLineNumber());
-        node.comment.index = htodl((uint32_t)-1);
-        node.header.size = htodl(sizeof(node)+extSize);
-        dest->writeData(&node, sizeof(node));
-        dest->writeData(extData, extSize);
+        if (writeCurrentNode) {
+            node.header.type = htods(RES_XML_END_NAMESPACE_TYPE);
+            node.lineNumber = htodl(getEndLineNumber());
+            node.comment.index = htodl((uint32_t)-1);
+            node.header.size = htodl(sizeof(node)+extSize);
+            dest->writeData(&node, sizeof(node));
+            dest->writeData(extData, extSize);
+        }
     }
 
     return NO_ERROR;