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28 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29
30 // Simple word patterns matcher which will be used in composer objects
31 // for auto swtiching input mode.
32
33 #include "composer/internal/mode_switching_handler.h"
34
35 #include <cctype>
36 #include <string>
37
38 #include "base/logging.h"
39 #include "base/singleton.h"
40
41 namespace mozc {
42 namespace composer {
43
ModeSwitchingHandler()44 ModeSwitchingHandler::ModeSwitchingHandler() {
45 // Default patterns are fixed right now.
46 // AddRule(key, display_mode, input_mode);
47 AddRule("google", PREFERRED_ALPHANUMERIC, REVERT_TO_PREVIOUS_MODE);
48 AddRule("Google", PREFERRED_ALPHANUMERIC, REVERT_TO_PREVIOUS_MODE);
49 AddRule("Chrome", PREFERRED_ALPHANUMERIC, REVERT_TO_PREVIOUS_MODE);
50 AddRule("chrome", PREFERRED_ALPHANUMERIC, REVERT_TO_PREVIOUS_MODE);
51 AddRule("Android", PREFERRED_ALPHANUMERIC, REVERT_TO_PREVIOUS_MODE);
52 AddRule("android", PREFERRED_ALPHANUMERIC, REVERT_TO_PREVIOUS_MODE);
53 AddRule("http", HALF_ALPHANUMERIC, HALF_ALPHANUMERIC);
54 AddRule("www.", HALF_ALPHANUMERIC, HALF_ALPHANUMERIC);
55 AddRule("\\\\", HALF_ALPHANUMERIC, HALF_ALPHANUMERIC);
56 }
57
~ModeSwitchingHandler()58 ModeSwitchingHandler::~ModeSwitchingHandler() {}
59
GetModeSwitchingRule(const string & key,ModeSwitching * display_mode,ModeSwitching * input_mode) const60 bool ModeSwitchingHandler::GetModeSwitchingRule(
61 const string &key,
62 ModeSwitching *display_mode,
63 ModeSwitching *input_mode) const {
64 if (display_mode == nullptr || input_mode == nullptr) {
65 LOG(ERROR) << "display_mode/input_mode is nullptr.";
66 return false;
67 }
68
69 auto it = patterns_.find(key);
70 if (it != patterns_.end()) {
71 *display_mode = it->second.first;
72 *input_mode = it->second.second;
73 return true;
74 }
75
76 if (IsDriveLetter(key)) {
77 *display_mode = HALF_ALPHANUMERIC;
78 *input_mode = HALF_ALPHANUMERIC;
79 return true;
80 }
81
82 *display_mode = NO_CHANGE;
83 *input_mode = NO_CHANGE;
84 return false;
85 }
86
IsDriveLetter(const string & key)87 bool ModeSwitchingHandler::IsDriveLetter(const string &key) {
88 return key.size() == 3 &&
89 isalpha(key[0]) && key[1] == ':' && key[2] == '\\';
90 }
91
AddRule(const string & key,const ModeSwitching display_mode,const ModeSwitching input_mode)92 void ModeSwitchingHandler::AddRule(const string &key,
93 const ModeSwitching display_mode,
94 const ModeSwitching input_mode) {
95 patterns_.emplace(key, std::make_pair(display_mode, input_mode));
96 }
97
GetModeSwitchingHandler()98 ModeSwitchingHandler *ModeSwitchingHandler::GetModeSwitchingHandler() {
99 return Singleton<ModeSwitchingHandler>::get();
100 }
101
102 } // namespace composer
103 } // namespace mozc
104