1 // Copyright 2015 Google Inc. All rights reserved
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14
15 // +build ignore
16
17 #include "file.h"
18
19 #include <fcntl.h>
20 #include <sys/stat.h>
21 #include <sys/types.h>
22 #include <unistd.h>
23
24 #include "fileutil.h"
25 #include "log.h"
26 #include "parser.h"
27 #include "stmt.h"
28
Makefile(const string & filename)29 Makefile::Makefile(const string& filename)
30 : mtime_(0), filename_(filename), exists_(false) {
31 int fd = open(filename.c_str(), O_RDONLY);
32 if (fd < 0) {
33 return;
34 }
35
36 struct stat st;
37 if (fstat(fd, &st) < 0) {
38 PERROR("fstat failed for %s", filename.c_str());
39 }
40
41 size_t len = st.st_size;
42 mtime_ = st.st_mtime;
43 buf_.resize(len);
44 exists_ = true;
45 ssize_t r = HANDLE_EINTR(read(fd, &buf_[0], len));
46 if (r != static_cast<ssize_t>(len)) {
47 if (r < 0)
48 PERROR("read failed for %s", filename.c_str());
49 ERROR("Unexpected read length=%zd expected=%zu", r, len);
50 }
51
52 if (close(fd) < 0) {
53 PERROR("close failed for %s", filename.c_str());
54 }
55
56 Parse(this);
57 }
58
~Makefile()59 Makefile::~Makefile() {
60 for (Stmt* stmt : stmts_)
61 delete stmt;
62 }
63