Re-invent page aligning libraries in APK file.

build/android/rezip/rezip.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // rezip is a tool which is used to modify zip files. It reads in a
 // zip file and outputs a new zip file after applying various
 // transforms. The tool is used in the Android Chromium build process
 // to modify an APK file (which are zip files). The main application
 // of this is to modify the APK so that the shared library is no
 // longer compressed. Ironically, this saves both transmission and
@@ skipping 472 matching lines @@
     LOG(ERROR) << " <action> is 'inflatealign', 'dropdescriptors' or 'rename'";
     LOG(ERROR) << " 'inflatealign'";
     LOG(ERROR) << "   inflate and page aligns files of the form "
         "lib/*/crazy.lib*.so";
     LOG(ERROR) << " 'dropdescriptors':";
     LOG(ERROR) << "   remove zip data descriptors from the zip file";
     LOG(ERROR) << " 'rename':";
     LOG(ERROR) << "   renames files of the form lib/*/lib*.so to "
         "lib/*/crazy.lib*.so. Note libchromium_android_linker.so is "
         "not renamed as the crazy linker can not load itself.";
+    LOG(ERROR) << " 'renameinflate':";
+    LOG(ERROR) << "   combines rename and inflate steps in a single pass.";
     exit(1);
   }
 
   const char* action = argv[1];
   const char* in_zip_filename = argv[2];
   const char* out_zip_filename = argv[3];
 
   InflatePredicateFun inflate_predicate_fun = NULL;
   AlignFun align_fun = NULL;
   RenameFun rename_fun = NULL;
   bool check_page_align = false;
+  // Note although only "renameinflate" is used in the build process, the
+  // other steps are used in the LGPL compliance process.
   if (strcmp("inflatealign", action) == 0) {
     inflate_predicate_fun = &IsCrazyLibraryFilename;
     align_fun = &PageAlignCrazyLibrary;
     check_page_align = true;
   } else if (strcmp("rename", action) == 0) {
     rename_fun = &RenameLibraryForCrazyLinker;
+  } else if (strcmp("renameinflate", action) == 0) {
+    rename_fun = &RenameLibraryForCrazyLinker;
+    inflate_predicate_fun = &IsLibraryFilename;
   } else if (strcmp("dropdescriptors", action) == 0) {
     // Minizip does not know about data descriptors, so the default
     // copying action will drop the descriptors. This should be fine
     // as data descriptors are redundant information.
     // Note we need to explicitly drop the descriptors before trying to
     // do alignment otherwise we will miscalculate the position because
     // we don't know about the data descriptors.
   } else {
     LOG(ERROR) << "Usage: <action> should be 'inflatealign', "
                   "'dropdescriptors' or 'rename'";
     exit(1);
   }
 
   if (!Rezip(in_zip_filename,
              out_zip_filename,
              align_fun,
              rename_fun,
              inflate_predicate_fun)) {
     exit(1);
   }
   if (check_page_align && !CheckPageAlignAndOnlyOneLibrary(out_zip_filename)) {
     exit(1);
   }
   return 0;
 }