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+// 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 "file.h"
+
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include "fileutil.h"
+#include "log.h"
+#include "parser.h"
+#include "stmt.h"
+
+Makefile::Makefile(const string& filename)
+ : mtime_(0), filename_(filename), exists_(false) {
+ int fd = open(filename.c_str(), O_RDONLY);
+ if (fd < 0) {
+ return;
+ }
+
+ struct stat st;
+ if (fstat(fd, &st) < 0) {
+ PERROR("fstat failed for %s", filename.c_str());
+ }
+
+ size_t len = st.st_size;
+ mtime_ = st.st_mtime;
+ buf_.resize(len);
+ exists_ = true;
+ ssize_t r = HANDLE_EINTR(read(fd, &buf_[0], len));
+ if (r != static_cast<ssize_t>(len)) {
+ if (r < 0)
+ PERROR("read failed for %s", filename.c_str());
+ ERROR("Unexpected read length=%zd expected=%zu", r, len);
+ }
+
+ if (close(fd) < 0) {
+ PERROR("close failed for %s", filename.c_str());
+ }
+
+ Parse(this);
+}
+
+Makefile::~Makefile() {
+ for (Stmt* stmt : stmts_)
+ delete stmt;
+}