1 // Copyright 2013 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #include "ui/base/ime/chromeos/extension_ime_util.h"
7 #include "base/strings/string_util.h"
13 const char kExtensionIMEPrefix
[] = "_ext_ime_";
14 const int kExtensionIMEPrefixLength
=
15 sizeof(kExtensionIMEPrefix
) / sizeof(kExtensionIMEPrefix
[0]) - 1;
16 const char kComponentExtensionIMEPrefix
[] = "_comp_ime_";
17 const int kComponentExtensionIMEPrefixLength
=
18 sizeof(kComponentExtensionIMEPrefix
) /
19 sizeof(kComponentExtensionIMEPrefix
[0]) - 1;
20 const int kExtensionIdLength
= 32;
24 namespace extension_ime_util
{
26 std::string
GetInputMethodID(const std::string
& extension_id
,
27 const std::string
& engine_id
) {
28 DCHECK(!extension_id
.empty());
29 DCHECK(!engine_id
.empty());
30 return kExtensionIMEPrefix
+ extension_id
+ engine_id
;
33 std::string
GetComponentInputMethodID(const std::string
& extension_id
,
34 const std::string
& engine_id
) {
35 DCHECK(!extension_id
.empty());
36 DCHECK(!engine_id
.empty());
37 return kComponentExtensionIMEPrefix
+ extension_id
+ engine_id
;
40 std::string
GetExtensionIDFromInputMethodID(
41 const std::string
& input_method_id
) {
42 if (IsExtensionIME(input_method_id
)) {
43 return input_method_id
.substr(kExtensionIMEPrefixLength
,
46 if (IsComponentExtensionIME(input_method_id
)) {
47 return input_method_id
.substr(kComponentExtensionIMEPrefixLength
,
53 std::string
GetComponentIDByInputMethodID(const std::string
& input_method_id
) {
54 if (IsComponentExtensionIME(input_method_id
))
55 return input_method_id
.substr(kComponentExtensionIMEPrefixLength
+
57 if (IsExtensionIME(input_method_id
))
58 return input_method_id
.substr(kExtensionIMEPrefixLength
+
60 return input_method_id
;
63 std::string
GetInputMethodIDByEngineID(const std::string
& engine_id
) {
64 if (StartsWithASCII(engine_id
, kComponentExtensionIMEPrefix
, true) ||
65 StartsWithASCII(engine_id
, kExtensionIMEPrefix
, true)) {
68 if (StartsWithASCII(engine_id
, "xkb:", true))
69 return GetComponentInputMethodID(kXkbExtensionId
, engine_id
);
70 if (StartsWithASCII(engine_id
, "vkd_", true))
71 return GetComponentInputMethodID(kM17nExtensionId
, engine_id
);
72 if (StartsWithASCII(engine_id
, "nacl_mozc_", true))
73 return GetComponentInputMethodID(kMozcExtensionId
, engine_id
);
74 if (StartsWithASCII(engine_id
, "hangul_", true))
75 return GetComponentInputMethodID(kHangulExtensionId
, engine_id
);
77 if (StartsWithASCII(engine_id
, "zh-", true) &&
78 engine_id
.find("pinyin") != std::string::npos
) {
79 return GetComponentInputMethodID(kChinesePinyinExtensionId
, engine_id
);
81 if (StartsWithASCII(engine_id
, "zh-", true) &&
82 engine_id
.find("zhuyin") != std::string::npos
) {
83 return GetComponentInputMethodID(kChineseZhuyinExtensionId
, engine_id
);
85 if (StartsWithASCII(engine_id
, "zh-", true) &&
86 engine_id
.find("cangjie") != std::string::npos
) {
87 return GetComponentInputMethodID(kChineseCangjieExtensionId
, engine_id
);
89 if (engine_id
.find("-t-i0-") != std::string::npos
)
90 return GetComponentInputMethodID(kT13nExtensionId
, engine_id
);
95 bool IsExtensionIME(const std::string
& input_method_id
) {
96 return StartsWithASCII(input_method_id
,
98 true /* Case sensitive */) &&
99 input_method_id
.size() > kExtensionIMEPrefixLength
+
103 bool IsComponentExtensionIME(const std::string
& input_method_id
) {
104 return StartsWithASCII(input_method_id
,
105 kComponentExtensionIMEPrefix
,
106 true /* Case sensitive */) &&
107 input_method_id
.size() > kComponentExtensionIMEPrefixLength
+
111 bool IsMemberOfExtension(const std::string
& input_method_id
,
112 const std::string
& extension_id
) {
113 return StartsWithASCII(input_method_id
,
114 kExtensionIMEPrefix
+ extension_id
,
115 true /* Case sensitive */);
118 bool IsKeyboardLayoutExtension(const std::string
& input_method_id
) {
119 if (IsComponentExtensionIME(input_method_id
))
120 return StartsWithASCII(GetComponentIDByInputMethodID(input_method_id
),
125 std::string
MaybeGetLegacyXkbId(const std::string
& input_method_id
) {
126 if (IsKeyboardLayoutExtension(input_method_id
))
127 return GetComponentIDByInputMethodID(input_method_id
);
128 return input_method_id
;
131 } // namespace extension_ime_util
132 } // namespace chromeos