Remove remove_all. A compiler has no need for recursively deleting a directory.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198955 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/Support/FileSystem.h

@@ -341,22 +341,6 @@ inline error_code remove(const Twine &Path) {
   return remove(Path, Existed);
 }
 
-/// @brief Recursively remove all files below \a path, then \a path. Files are
-///        removed as if by POSIX remove().
-///
-/// @param path Input path.
-/// @param num_removed Number of files removed.
-/// @returns errc::success if path has been removed and num_removed has been
-///          successfully set, otherwise a platform specific error_code.
-error_code remove_all(const Twine &path, uint32_t &num_removed);
-
-/// @brief Convenience function for clients that don't need to know how many
-///        files were removed.
-inline error_code remove_all(const Twine &Path) {
-  uint32_t Removed;
-  return remove_all(Path, Removed);
-}
-
 /// @brief Rename \a from to \a to. Files are renamed as if by POSIX rename().
 ///
 /// @param from The path to rename from.

lib/Support/Path.cpp

@@ -983,45 +983,6 @@ error_code identify_magic(const Twine &path, file_magic &result) {
   return error_code::success();
 }
 
-namespace {
-error_code remove_all_r(StringRef path, file_type ft, uint32_t &count) {
-  if (ft == file_type::directory_file) {
-    // This code would be a lot better with exceptions ;/.
-    error_code ec;
-    directory_iterator i(path, ec);
-    if (ec) return ec;
-    for (directory_iterator e; i != e; i.increment(ec)) {
-      if (ec) return ec;
-      file_status st;
-      if (error_code ec = i->status(st)) return ec;
-      if (error_code ec = remove_all_r(i->path(), st.type(), count)) return ec;
-    }
-    bool obviously_this_exists;
-    if (error_code ec = remove(path, obviously_this_exists)) return ec;
-    assert(obviously_this_exists);
-    ++count; // Include the directory itself in the items removed.
-  } else {
-    bool obviously_this_exists;
-    if (error_code ec = remove(path, obviously_this_exists)) return ec;
-    assert(obviously_this_exists);
-    ++count;
-  }
-
-  return error_code::success();
-}
-} // end unnamed namespace
-
-error_code remove_all(const Twine &path, uint32_t &num_removed) {
-  SmallString<128> path_storage;
-  StringRef p = path.toStringRef(path_storage);
-
-  file_status fs;
-  if (error_code ec = status(path, fs))
-    return ec;
-  num_removed = 0;
-  return remove_all_r(p, fs.type(), num_removed);
-}
-
 error_code directory_entry::status(file_status &result) const {
   return fs::status(Path, result);
 }

unittests/Support/FileOutputBufferTest.cpp

@@ -56,6 +56,7 @@ TEST(FileOutputBuffer, Test) {
   uint64_t File1Size;
   ASSERT_NO_ERROR(fs::file_size(Twine(File1), File1Size));
   ASSERT_EQ(File1Size, 8192ULL);
+  ASSERT_NO_ERROR(fs::remove(File1.str()));
 
  	// TEST 2: Verify abort case.
   SmallString<128> File2(TestDirectory);
@@ -71,6 +72,7 @@ TEST(FileOutputBuffer, Test) {
   bool Exists = false;
   ASSERT_NO_ERROR(fs::exists(Twine(File2), Exists));
   EXPECT_FALSE(Exists);
+  ASSERT_NO_ERROR(fs::remove(File2.str()));
 
   // TEST 3: Verify sizing down case.
   SmallString<128> File3(TestDirectory);
@@ -94,6 +96,7 @@ TEST(FileOutputBuffer, Test) {
   uint64_t File3Size;
   ASSERT_NO_ERROR(fs::file_size(Twine(File3), File3Size));
   ASSERT_EQ(File3Size, 5000ULL);
+  ASSERT_NO_ERROR(fs::remove(File3.str()));
 
   // TEST 4: Verify file can be made executable.
   SmallString<128> File4(TestDirectory);
@@ -112,9 +115,9 @@ TEST(FileOutputBuffer, Test) {
   ASSERT_NO_ERROR(fs::status(Twine(File4), Status));
   bool IsExecutable = (Status.permissions() & fs::owner_exe);
   EXPECT_TRUE(IsExecutable);
+  ASSERT_NO_ERROR(fs::remove(File4.str()));
 
   // Clean up.
-  uint32_t RemovedCount;
+  ASSERT_NO_ERROR(fs::remove(TestDirectory.str()));
-  ASSERT_NO_ERROR(fs::remove_all(TestDirectory.str(), RemovedCount));
 }
 } // anonymous namespace

unittests/Support/LockFileManagerTest.cpp

@@ -40,7 +40,8 @@ TEST(LockFileManagerTest, Basic) {
   // Now that the lock is out of scope, the file should be gone.
   EXPECT_FALSE(sys::fs::exists(StringRef(LockedFile)));
 
-  sys::fs::remove_all(StringRef(TmpDir));
+  EC = sys::fs::remove(StringRef(TmpDir));
+  ASSERT_FALSE(EC);
 }
 
 } // end anonymous namespace

unittests/Support/Path.cpp

@@ -225,8 +225,7 @@ protected:
   }
 
   virtual void TearDown() {
-    uint32_t removed;
+    ASSERT_NO_ERROR(fs::remove(TestDirectory.str()));
-    ASSERT_NO_ERROR(fs::remove_all(TestDirectory.str(), removed));
   }
 };
 
@@ -414,6 +413,18 @@ TEST_F(FileSystemTest, DirectoryIteration) {
   ASSERT_LT(a0, aa1);
   ASSERT_LT(a0, ab1);
   ASSERT_LT(z0, za1);
+
+  ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive/a0/aa1"));
+  ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive/a0/ab1"));
+  ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive/a0"));
+  ASSERT_NO_ERROR(
+      fs::remove(Twine(TestDirectory) + "/recursive/dontlookhere/da1"));
+  ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive/dontlookhere"));
+  ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive/pop/p1"));
+  ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive/pop"));
+  ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive/z0/za1"));
+  ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive/z0"));
+  ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive"));
 }
 
 const char archive[] = "!<arch>\x0A";
@@ -479,6 +490,7 @@ TEST_F(FileSystemTest, Magic) {
     ASSERT_NO_ERROR(fs::has_magic(file_pathname.c_str(), magic, res));
     EXPECT_TRUE(res);
     EXPECT_EQ(i->magic, fs::identify_magic(magic));
+    ASSERT_NO_ERROR(fs::remove(Twine(file_pathname)));
   }
 }
 
@@ -509,6 +521,7 @@ TEST_F(FileSystemTest, CarriageReturn) {
     MemoryBuffer::getFile(FilePathname.c_str(), Buf);
     EXPECT_EQ(Buf->getBuffer(), "\n");
   }
+  ASSERT_NO_ERROR(fs::remove(Twine(FilePathname)));
 }
 #endif