Path.cpp - Android社区 - https://www.androidos.net.cn/

//===- llvm/unittest/Support/Path.cpp - Path tests ------------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

#include "llvm/Support/Path.h"
#include "llvm/Support/Errc.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/raw_ostream.h"
#include "gtest/gtest.h"

#ifdef LLVM_ON_WIN32
#include <Windows.h>
#include <winerror.h>
#endif

using namespace llvm;
using namespace llvm::sys;

#define ASSERT_NO_ERROR(x)                                                     \
  if (std::error_code ASSERT_NO_ERROR_ec = x) {                                \
    SmallString<128> MessageStorage;                                           \
    raw_svector_ostream Message(MessageStorage);                               \
    Message << #x ": did not return errc::success.\n"                          \
            << "error number: " << ASSERT_NO_ERROR_ec.value() << "\n"          \
            << "error message: " << ASSERT_NO_ERROR_ec.message() << "\n";      \
    GTEST_FATAL_FAILURE_(MessageStorage.c_str());                              \
  } else {                                                                     \
  }

namespace {

TEST(is_separator, Works) {
  EXPECT_TRUE(path::is_separator('/'));
  EXPECT_FALSE(path::is_separator('\0'));
  EXPECT_FALSE(path::is_separator('-'));
  EXPECT_FALSE(path::is_separator(' '));

#ifdef LLVM_ON_WIN32
  EXPECT_TRUE(path::is_separator('\\'));
#else
  EXPECT_FALSE(path::is_separator('\\'));
#endif
}

TEST(Support, Path) {
  SmallVector<StringRef, 40> paths;
  paths.push_back("");
  paths.push_back(".");
  paths.push_back("..");
  paths.push_back("foo");
  paths.push_back("/");
  paths.push_back("/foo");
  paths.push_back("foo/");
  paths.push_back("/foo/");
  paths.push_back("foo/bar");
  paths.push_back("/foo/bar");
  paths.push_back("//net");
  paths.push_back("//net/foo");
  paths.push_back("///foo///");
  paths.push_back("///foo///bar");
  paths.push_back("/.");
  paths.push_back("./");
  paths.push_back("/..");
  paths.push_back("../");
  paths.push_back("foo/.");
  paths.push_back("foo/..");
  paths.push_back("foo/./");
  paths.push_back("foo/./bar");
  paths.push_back("foo/..");
  paths.push_back("foo/../");
  paths.push_back("foo/../bar");
  paths.push_back("c:");
  paths.push_back("c:/");
  paths.push_back("c:foo");
  paths.push_back("c:/foo");
  paths.push_back("c:foo/");
  paths.push_back("c:/foo/");
  paths.push_back("c:/foo/bar");
  paths.push_back("prn:");
  paths.push_back("c:\\");
  paths.push_back("c:foo");
  paths.push_back("c:\\foo");
  paths.push_back("c:foo\\");
  paths.push_back("c:\\foo\\");
  paths.push_back("c:\\foo/");
  paths.push_back("c:/foo\\bar");

SmallVector<StringRef, 5> ComponentStack;
  for (SmallVector<StringRef, 40>::const_iterator i = paths.begin(),
                                                  e = paths.end();
                                                  i != e;
                                                  ++i) {
    for (sys::path::const_iterator ci = sys::path::begin(*i),
                                   ce = sys::path::end(*i);
                                   ci != ce;
                                   ++ci) {
      ASSERT_FALSE(ci->empty());
      ComponentStack.push_back(*ci);
    }

for (sys::path::reverse_iterator ci = sys::path::rbegin(*i),
                                     ce = sys::path::rend(*i);
                                     ci != ce;
                                     ++ci) {
      ASSERT_TRUE(*ci == ComponentStack.back());
      ComponentStack.pop_back();
    }
    ASSERT_TRUE(ComponentStack.empty());

path::has_root_path(*i);
    path::root_path(*i);
    path::has_root_name(*i);
    path::root_name(*i);
    path::has_root_directory(*i);
    path::root_directory(*i);
    path::has_parent_path(*i);
    path::parent_path(*i);
    path::has_filename(*i);
    path::filename(*i);
    path::has_stem(*i);
    path::stem(*i);
    path::has_extension(*i);
    path::extension(*i);
    path::is_absolute(*i);
    path::is_relative(*i);

SmallString<128> temp_store;
    temp_store = *i;
    ASSERT_NO_ERROR(fs::make_absolute(temp_store));
    temp_store = *i;
    path::remove_filename(temp_store);

temp_store = *i;
    path::replace_extension(temp_store, "ext");
    StringRef filename(temp_store.begin(), temp_store.size()), stem, ext;
    stem = path::stem(filename);
    ext  = path::extension(filename);
    EXPECT_EQ(*sys::path::rbegin(filename), (stem + ext).str());

path::native(*i, temp_store);
  }
}

TEST(Support, RelativePathIterator) {
  SmallString<64> Path(StringRef("c/d/e/foo.txt"));
  typedef SmallVector<StringRef, 4> PathComponents;
  PathComponents ExpectedPathComponents;
  PathComponents ActualPathComponents;

StringRef(Path).split(ExpectedPathComponents, "/");

for (path::const_iterator I = path::begin(Path), E = path::end(Path); I != E;
       ++I) {
    ActualPathComponents.push_back(*I);
  }