lib/Testing/Support/SupportHelpers.cpp

   1
   2 #include "llvm/Testing/Support/SupportHelpers.h"
   3
   4 #include "llvm/ADT/SmallString.h"
   5 #include "llvm/ADT/Twine.h"
   6 #include "llvm/Support/Error.h"
   7 #include "llvm/Support/FileSystem.h"
   8 #include "llvm/Support/MemoryBuffer.h"
   9 #include "llvm/Support/Path.h"
  10
  11 #include "gtest/gtest.h"
  12
  13 using namespace llvm;
  14 using namespace llvm::unittest;
  15
  16 static std::pair<bool, SmallString<128>> findSrcDirMap(StringRef Argv0) {
  17   SmallString<128> BaseDir = llvm::sys::path::parent_path(Argv0);
  18
  19   llvm::sys::fs::make_absolute(BaseDir);
  20
  21   SmallString<128> PathInSameDir = BaseDir;
  22   llvm::sys::path::append(PathInSameDir, "llvm.srcdir.txt");
  23
  24   if (llvm::sys::fs::is_regular_file(PathInSameDir))
  25     return std::make_pair(true, std::move(PathInSameDir));
  26
  27   SmallString<128> PathInParentDir = llvm::sys::path::parent_path(BaseDir);
  28
  29   llvm::sys::path::append(PathInParentDir, "llvm.srcdir.txt");
  30   if (llvm::sys::fs::is_regular_file(PathInParentDir))
  31     return std::make_pair(true, std::move(PathInParentDir));
  32
  33   return std::pair<bool, SmallString<128>>(false, {});
  34 }
  35
  36 SmallString<128> llvm::unittest::getInputFileDirectory(const char *Argv0) {
  37   bool Found = false;
  38   SmallString<128> InputFilePath;
  39   std::tie(Found, InputFilePath) = findSrcDirMap(Argv0);
  40
  41   EXPECT_TRUE(Found) << "Unit test source directory file does not exist.";
  42
  43   auto File = MemoryBuffer::getFile(InputFilePath);
  44
  45   EXPECT_TRUE(static_cast<bool>(File))
  46       << "Could not open unit test source directory file.";
  47
  48   InputFilePath.clear();
  49   InputFilePath.append((*File)->getBuffer().trim());
  50   llvm::sys::path::append(InputFilePath, "Inputs");
  51   llvm::sys::path::native(InputFilePath);
  52   return InputFilePath;
  53 }