1 /*
2  * Copyright (C) 2015 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 #ifndef AAPT_SOURCE_H
18 #define AAPT_SOURCE_H
19 
20 #include <ostream>
21 #include <string>
22 
23 #include "android-base/stringprintf.h"
24 #include "androidfw/StringPiece.h"
25 
26 #include "util/Maybe.h"
27 
28 namespace aapt {
29 
30 // Represents a file on disk. Used for logging and showing errors.
31 struct Source {
32   std::string path;
33   Maybe<size_t> line;
34 
35   Source() = default;
36 
SourceSource37   inline Source(const android::StringPiece& path) : path(path.to_string()) {  // NOLINT(implicit)
38   }
39 
SourceSource40   inline Source(const android::StringPiece& path, size_t line)
41       : path(path.to_string()), line(line) {}
42 
WithLineSource43   inline Source WithLine(size_t line) const {
44     return Source(path, line);
45   }
46 
to_stringSource47   std::string to_string() const {
48     if (line) {
49       return ::android::base::StringPrintf("%s:%zd", path.c_str(), line.value());
50     }
51     return path;
52   }
53 };
54 
55 //
56 // Implementations
57 //
58 
59 inline ::std::ostream& operator<<(::std::ostream& out, const Source& source) {
60   return out << source.to_string();
61 }
62 
63 inline bool operator==(const Source& lhs, const Source& rhs) {
64   return lhs.path == rhs.path && lhs.line == rhs.line;
65 }
66 
67 inline bool operator<(const Source& lhs, const Source& rhs) {
68   int cmp = lhs.path.compare(rhs.path);
69   if (cmp < 0) return true;
70   if (cmp > 0) return false;
71   if (lhs.line) {
72     if (rhs.line) {
73       return lhs.line.value() < rhs.line.value();
74     }
75     return false;
76   }
77   return bool(rhs.line);
78 }
79 
80 }  // namespace aapt
81 
82 #endif  // AAPT_SOURCE_H
83