62 lines
1.5 KiB
C++
62 lines
1.5 KiB
C++
// Copyright 2015 Google Inc. All rights reserved
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// +build ignore
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#include "file.h"
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#include <fcntl.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include "fileutil.h"
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#include "log.h"
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#include "parser.h"
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#include "stmt.h"
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Makefile::Makefile(const string& filename)
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: mtime_(0), filename_(filename), exists_(false) {
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int fd = open(filename.c_str(), O_RDONLY);
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if (fd < 0) {
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return;
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}
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struct stat st;
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if (fstat(fd, &st) < 0) {
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PERROR("fstat failed for %s", filename.c_str());
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}
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size_t len = st.st_size;
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mtime_ = st.st_mtime;
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buf_.resize(len);
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exists_ = true;
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ssize_t r = HANDLE_EINTR(read(fd, &buf_[0], len));
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if (r != static_cast<ssize_t>(len)) {
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if (r < 0)
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PERROR("read failed for %s", filename.c_str());
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ERROR("Unexpected read length=%zd expected=%zu", r, len);
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}
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if (close(fd) < 0) {
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PERROR("close failed for %s", filename.c_str());
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}
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Parse(this);
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}
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Makefile::~Makefile() {
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for (Stmt* stmt : stmts_)
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delete stmt;
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}
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