[C++] Add io.h and io.cc

1 files changed, 43 insertions, 0 deletions

diff --git a/io.cc b/io.cc
new file mode 100644
index 0000000..e8cc507
--- /dev/null
+++ b/io.cc
@@ -0,0 +1,43 @@
+// Copyright 2015 Google Inc. All rights reserved
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// +build ignore
+
+#include "io.h"
+
+#include "log.h"
+
+void DumpInt(FILE* fp, int v) {
+  size_t r = fwrite(&v, sizeof(v), 1, fp);
+  CHECK(r == 1);
+}
+
+void DumpString(FILE* fp, StringPiece s) {
+  DumpInt(fp, s.size());
+  size_t r = fwrite(s.data(), 1, s.size(), fp);
+  CHECK(r == s.size());
+}
+
+int LoadInt(FILE* fp) {
+  int v;
+  size_t r = fread(&v, sizeof(v), 1, fp);
+  CHECK(r == 1);
+  return v;
+}
+
+void LoadString(FILE* fp, string* s) {
+  s->resize(LoadInt(fp));
+  size_t r = fread(&(*s)[0], 1, s->size(), fp);
+  CHECK(r == s->size());
+}