1 /*
2 * Copyright (C) 2017 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "common/file-utils.h"
18
19 #include <fcntl.h>
20 #include <stdio.h>
21 #include <sys/stat.h>
22 #include <sys/types.h>
23
24 #include <fstream>
25 #include <memory>
26 #include <string>
27
28 #include "util/base/logging.h"
29
30 namespace libtextclassifier {
31 namespace nlp_core {
32
33 namespace file_utils {
34
GetFileContent(const std::string & filename,std::string * content)35 bool GetFileContent(const std::string &filename, std::string *content) {
36 std::ifstream input_stream(filename, std::ifstream::binary);
37 if (input_stream.fail()) {
38 TC_LOG(INFO) << "Error opening " << filename;
39 return false;
40 }
41
42 content->assign(
43 std::istreambuf_iterator<char>(input_stream),
44 std::istreambuf_iterator<char>());
45
46 if (input_stream.fail()) {
47 TC_LOG(ERROR) << "Error reading " << filename;
48 return false;
49 }
50
51 TC_LOG(INFO) << "Successfully read " << filename;
52 return true;
53 }
54
FileExists(const std::string & filename)55 bool FileExists(const std::string &filename) {
56 struct stat s = {0};
57 if (!stat(filename.c_str(), &s)) {
58 return s.st_mode & S_IFREG;
59 } else {
60 return false;
61 }
62 }
63
DirectoryExists(const std::string & dirpath)64 bool DirectoryExists(const std::string &dirpath) {
65 struct stat s = {0};
66 if (!stat(dirpath.c_str(), &s)) {
67 return s.st_mode & S_IFDIR;
68 } else {
69 return false;
70 }
71 }
72
73 } // namespace file_utils
74
75 } // namespace nlp_core
76 } // namespace libtextclassifier
77