From a73c7781bda66b6a179b39429a22f600593cde77 Mon Sep 17 00:00:00 2001
From: Reid Kleckner <reid@kleckner.net>
Date: Thu, 18 Jul 2013 16:52:05 +0000
Subject: [Support] Beef up and expose the response file parsing in llvm::cl

The plan is to use it for clang and lld.

Major behavior changes:
- We can now parse UTF-16 files that have a byte order mark.
- PR16209: Don't drop backslashes on the floor if they don't escape
  anything.

The actual parsing loop was based on code from Clang's driver.cpp,
although it's been rewritten to track its state with control flow rather
than state variables.

Reviewers: hans

Differential Revision: http://llvm-reviews.chandlerc.com/D1170

llvm-svn: 186587
---
 llvm/unittests/Support/CommandLineTest.cpp | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

(limited to 'llvm/unittests/Support/CommandLineTest.cpp')

diff --git a/llvm/unittests/Support/CommandLineTest.cpp b/llvm/unittests/Support/CommandLineTest.cpp
index cd235d2..7a1c382 100644
--- a/llvm/unittests/Support/CommandLineTest.cpp
+++ b/llvm/unittests/Support/CommandLineTest.cpp
@@ -7,6 +7,7 @@
 //
 //===----------------------------------------------------------------------===//
 
+#include "llvm/ADT/STLExtras.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Config/config.h"
 #include "gtest/gtest.h"
@@ -118,4 +119,27 @@ TEST(CommandLineTest, UseOptionCategory) {
                                                   "Category.";
 }
 
+class StrDupSaver : public cl::StringSaver {
+  const char *SaveString(const char *Str) LLVM_OVERRIDE {
+    return strdup(Str);
+  }
+};
+
+TEST(CommandLineTest, TokenizeGNUCommandLine) {
+  const char *Input = "foo\\ bar \"foo bar\" \'foo bar\' 'foo\\\\bar' "
+                      "foo\"bar\"baz C:\\src\\foo.cpp \"C:\\src\\foo.cpp\"";
+  const char *const Output[] = { "foo bar", "foo bar", "foo bar", "foo\\bar",
+                                 "foobarbaz", "C:\\src\\foo.cpp",
+                                 "C:\\src\\foo.cpp" };
+  SmallVector<const char *, 0> Actual;
+  StrDupSaver Saver;
+  cl::TokenizeGNUCommandLine(Input, Saver, Actual);
+  EXPECT_EQ(array_lengthof(Output), Actual.size());
+  for (unsigned I = 0, E = Actual.size(); I != E; ++I) {
+    if (I < array_lengthof(Output))
+      EXPECT_STREQ(Output[I], Actual[I]);
+    free(const_cast<char *>(Actual[I]));
+  }
+}
+
 }  // anonymous namespace
-- 
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