From f6b403a753f1c3f87edb8c6306aa959c7b5f0da3 Mon Sep 17 00:00:00 2001
From: Rafael Espindola <rafael.espindola@gmail.com>
Date: Tue, 21 Oct 2014 23:18:51 +0000
Subject: [PATCH] MRI scripts: Add addlib support.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220346 91177308-0d34-0410-b5e6-96231b3b80d8
---
 test/Object/mri-addlib.test | 17 +++++++++++++++++
 tools/llvm-ar/llvm-ar.cpp   | 21 ++++++++++++++++++++-
 2 files changed, 37 insertions(+), 1 deletion(-)
 create mode 100644 test/Object/mri-addlib.test

diff --git a/test/Object/mri-addlib.test b/test/Object/mri-addlib.test
new file mode 100644
index 00000000000..5af09e36907
--- /dev/null
+++ b/test/Object/mri-addlib.test
@@ -0,0 +1,17 @@
+; RUN: echo create %t.a > %t.mri
+; RUN: echo addlib %p/Inputs/GNU.a >> %t.mri
+; RUN: echo addlib %p/Inputs/archive-test.a-gnu-minimal >> %t.mri
+; RUN: echo save >> %t.mri
+; RUN: echo end >> %t.mri
+
+; RUN: llvm-ar -M  < %t.mri
+; RUN: llvm-ar t %t.a | FileCheck %s
+
+; CHECK: evenlen
+; CHECK-NEXT: oddlen
+; CHECK-NEXT: very_long_bytecode_file_name.bc
+; CHECK-NEXT: IsNAN.o
+; CHECK-NEXT: test
+
+; line_iterator is incompatible to CRLF.
+; REQUIRES: shell
diff --git a/tools/llvm-ar/llvm-ar.cpp b/tools/llvm-ar/llvm-ar.cpp
index aff8a04cce5..8411a1dad47 100644
--- a/tools/llvm-ar/llvm-ar.cpp
+++ b/tools/llvm-ar/llvm-ar.cpp
@@ -947,19 +947,22 @@ static int performOperation(ArchiveOperation Operation,
 }
 
 static void runMRIScript() {
-  enum class MRICommand { AddMod, Create, Save, End, Invalid };
+  enum class MRICommand { AddLib, AddMod, Create, Save, End, Invalid };
 
   ErrorOr<std::unique_ptr<MemoryBuffer>> Buf = MemoryBuffer::getSTDIN();
   failIfError(Buf.getError());
   const MemoryBuffer &Ref = *Buf.get();
   bool Saved = false;
   std::vector<NewArchiveIterator> NewMembers;
+  std::vector<std::unique_ptr<MemoryBuffer>> ArchiveBuffers;
+  std::vector<std::unique_ptr<object::Archive>> Archives;
 
   for (line_iterator I(Ref, /*SkipBlanks*/ true, ';'), E; I != E; ++I) {
     StringRef Line = *I;
     StringRef CommandStr, Rest;
     std::tie(CommandStr, Rest) = Line.split(' ');
     auto Command = StringSwitch<MRICommand>(CommandStr.lower())
+                       .Case("addlib", MRICommand::AddLib)
                        .Case("addmod", MRICommand::AddMod)
                        .Case("create", MRICommand::Create)
                        .Case("save", MRICommand::Save)
@@ -967,6 +970,22 @@ static void runMRIScript() {
                        .Default(MRICommand::Invalid);
 
     switch (Command) {
+    case MRICommand::AddLib: {
+      auto BufOrErr = MemoryBuffer::getFile(Rest, -1, false);
+      failIfError(BufOrErr.getError(), "Could not open library");
+      ArchiveBuffers.push_back(std::move(*BufOrErr));
+      auto LibOrErr =
+          object::Archive::create(ArchiveBuffers.back()->getMemBufferRef());
+      failIfError(LibOrErr.getError(), "Could not parse library");
+      Archives.push_back(std::move(*LibOrErr));
+      object::Archive &Lib = *Archives.back();
+      for (auto &Member : Lib.children()) {
+        ErrorOr<StringRef> NameOrErr = Member.getName();
+        failIfError(NameOrErr.getError());
+        addMember(NewMembers, Member, *NameOrErr);
+      }
+      break;
+    }
     case MRICommand::AddMod:
       addMember(NewMembers, Rest, sys::path::filename(Rest));
       break;