SupportHelpers.cpp

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#include "llvm/Testing/Support/SupportHelpers.h"
 
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/Twine.h"
#include "llvm/Support/Error.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/Path.h"
 
#include "gtest/gtest.h"
 
using namespace llvm;
using namespace llvm::unittest;
 
static std::pair<bool, SmallString<128>> findSrcDirMap(StringRef Argv0) {
  SmallString<128> BaseDir = llvm::sys::path::parent_path(Argv0);
 
  llvm::sys::fs::make_absolute(BaseDir);
 
  SmallString<128> PathInSameDir = BaseDir;
  llvm::sys::path::append(PathInSameDir, "llvm.srcdir.txt");
 
  if (llvm::sys::fs::is_regular_file(PathInSameDir))
    return std::make_pair(true, std::move(PathInSameDir));
 
  SmallString<128> PathInParentDir = llvm::sys::path::parent_path(BaseDir);
 
  llvm::sys::path::append(PathInParentDir, "llvm.srcdir.txt");
  if (llvm::sys::fs::is_regular_file(PathInParentDir))
    return std::make_pair(true, std::move(PathInParentDir));
 
  return std::pair<bool, SmallString<128>>(false, {});
}
 
SmallString<128> llvm::unittest::getInputFileDirectory(const char *Argv0) {
  bool Found = false;
  SmallString<128> InputFilePath;
  std::tie(Found, InputFilePath) = findSrcDirMap(Argv0);
 
  EXPECT_TRUE(Found) << "Unit test source directory file does not exist.";
 
  auto File = MemoryBuffer::getFile(InputFilePath, /*IsText=*/true);
 
  EXPECT_TRUE(static_cast<bool>(File))
      << "Could not open unit test source directory file.";
 
  InputFilePath.clear();
  InputFilePath.append((*File)->getBuffer().trim());
  llvm::sys::path::append(InputFilePath, "Inputs");
  llvm::sys::path::native(InputFilePath);
  return InputFilePath;
}