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 ANDROIDFW_LOCALE_VALUE_H
18 #define ANDROIDFW_LOCALE_VALUE_H
19
20 #include <string>
21 #include <vector>
22
23 #include "androidfw/ResourceTypes.h"
24 #include "androidfw/StringPiece.h"
25
26 namespace android {
27
28 /**
29 * A convenience class to build and parse locales.
30 */
31 struct LocaleValue {
32 char language[4];
33 char region[4];
34 char script[4];
35 char variant[8];
36
37 inline LocaleValue();
38
39 /**
40 * Initialize this LocaleValue from a config string.
41 */
42 bool InitFromFilterString(const android::StringPiece& config);
43
44 // Initializes this LocaleValue from a BCP-47 locale tag.
45 bool InitFromBcp47Tag(const android::StringPiece& bcp47tag);
46
47 /**
48 * Initialize this LocaleValue from parts of a vector.
49 */
50 ssize_t InitFromParts(std::vector<std::string>::iterator iter,
51 std::vector<std::string>::iterator end);
52
53 /**
54 * Initialize this LocaleValue from a ResTable_config.
55 */
56 void InitFromResTable(const android::ResTable_config& config);
57
58 /**
59 * Set the locale in a ResTable_config from this LocaleValue.
60 */
61 void WriteTo(android::ResTable_config* out) const;
62
63 inline int compare(const LocaleValue& other) const;
64
65 inline bool operator<(const LocaleValue& o) const;
66 inline bool operator<=(const LocaleValue& o) const;
67 inline bool operator==(const LocaleValue& o) const;
68 inline bool operator!=(const LocaleValue& o) const;
69 inline bool operator>=(const LocaleValue& o) const;
70 inline bool operator>(const LocaleValue& o) const;
71
72 private:
73 bool InitFromBcp47TagImpl(const android::StringPiece& bcp47tag, const char separator);
74
75 void set_language(const char* language);
76 void set_region(const char* language);
77 void set_script(const char* script);
78 void set_variant(const char* variant);
79 };
80
81 //
82 // Implementation
83 //
84
LocaleValue()85 LocaleValue::LocaleValue() { memset(this, 0, sizeof(LocaleValue)); }
86
compare(const LocaleValue & other)87 int LocaleValue::compare(const LocaleValue& other) const {
88 return memcmp(this, &other, sizeof(LocaleValue));
89 }
90
91 bool LocaleValue::operator<(const LocaleValue& o) const {
92 return compare(o) < 0;
93 }
94
95 bool LocaleValue::operator<=(const LocaleValue& o) const {
96 return compare(o) <= 0;
97 }
98
99 bool LocaleValue::operator==(const LocaleValue& o) const {
100 return compare(o) == 0;
101 }
102
103 bool LocaleValue::operator!=(const LocaleValue& o) const {
104 return compare(o) != 0;
105 }
106
107 bool LocaleValue::operator>=(const LocaleValue& o) const {
108 return compare(o) >= 0;
109 }
110
111 bool LocaleValue::operator>(const LocaleValue& o) const {
112 return compare(o) > 0;
113 }
114
115 } // namespace android
116
117 #endif // ANDROIDFW_LOCALE_VALUE_H
118