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 "log.h"
25 #include "parser.h"
26 #include "stmt.h"
27
Makefile(const string & filename)28 Makefile::Makefile(const string& filename)
29 : mtime_(0), filename_(filename), exists_(false) {
30 int fd = open(filename.c_str(), O_RDONLY);
31 if (fd < 0) {
32 return;
33 }
34
35 struct stat st;
36 if (fstat(fd, &st) < 0) {
37 PERROR("fstat failed for %s", filename.c_str());
38 }
39
40 size_t len = st.st_size;
41 mtime_ = st.st_mtime;
42 buf_.resize(len);
43 exists_ = true;
44 ssize_t r = read(fd, &buf_[0], len);
45 if (r != static_cast<ssize_t>(len)) {
46 if (r < 0)
47 PERROR("read failed for %s", filename.c_str());
48 ERROR("Unexpected read length=%zd expected=%zu", r, len);
49 }
50
51 if (close(fd) < 0) {
52 PERROR("close failed for %s", filename.c_str());
53 }
54
55 Parse(this);
56 }
57
~Makefile()58 Makefile::~Makefile() {
59 for (Stmt* stmt : stmts_)
60 delete stmt;
61 }
62