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1 // Copyright 2011 the V8 project authors. All rights reserved. | |
2 // Redistribution and use in source and binary forms, with or without | |
3 // modification, are permitted provided that the following conditions are | |
4 // met: | |
5 // | |
6 // * Redistributions of source code must retain the above copyright | |
7 // notice, this list of conditions and the following disclaimer. | |
8 // * Redistributions in binary form must reproduce the above | |
9 // copyright notice, this list of conditions and the following | |
10 // disclaimer in the documentation and/or other materials provided | |
11 // with the distribution. | |
12 // * Neither the name of Google Inc. nor the names of its | |
13 // contributors may be used to endorse or promote products derived | |
14 // from this software without specific prior written permission. | |
15 // | |
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
27 | |
28 #include "src/extensions/experimental/i18n-locale.h" | |
29 | |
30 #include "src/extensions/experimental/i18n-utils.h" | |
31 #include "src/extensions/experimental/language-matcher.h" | |
32 #include "unicode/locid.h" | |
33 #include "unicode/uloc.h" | |
34 | |
35 namespace v8 { | |
36 namespace internal { | |
37 | |
38 const char* const I18NLocale::kLocaleID = "localeID"; | |
39 const char* const I18NLocale::kRegionID = "regionID"; | |
40 const char* const I18NLocale::kICULocaleID = "icuLocaleID"; | |
41 | |
42 v8::Handle<v8::Value> I18NLocale::JSLocale(const v8::Arguments& args) { | |
43 v8::HandleScope handle_scope; | |
44 | |
45 if (args.Length() != 1 || !args[0]->IsObject()) { | |
46 return v8::Undefined(); | |
47 } | |
48 | |
49 v8::Local<v8::Object> settings = args[0]->ToObject(); | |
50 | |
51 // Get best match for locale. | |
52 v8::TryCatch try_catch; | |
53 v8::Handle<v8::Value> locale_id = settings->Get(v8::String::New(kLocaleID)); | |
54 if (try_catch.HasCaught()) { | |
55 return v8::Undefined(); | |
56 } | |
57 | |
58 LocaleIDMatch result; | |
59 if (locale_id->IsArray()) { | |
60 LanguageMatcher::GetBestMatchForPriorityList( | |
61 v8::Handle<v8::Array>::Cast(locale_id), &result); | |
62 } else if (locale_id->IsString()) { | |
63 LanguageMatcher::GetBestMatchForString(locale_id->ToString(), &result); | |
64 } else { | |
65 LanguageMatcher::GetBestMatchForString(v8::String::New(""), &result); | |
66 } | |
67 | |
68 // Get best match for region. | |
69 char region_id[ULOC_COUNTRY_CAPACITY]; | |
70 I18NUtils::StrNCopy(region_id, ULOC_COUNTRY_CAPACITY, ""); | |
71 | |
72 v8::Handle<v8::Value> region = settings->Get(v8::String::New(kRegionID)); | |
73 if (try_catch.HasCaught()) { | |
74 return v8::Undefined(); | |
75 } | |
76 | |
77 if (!GetBestMatchForRegionID(result.icu_id, region, region_id)) { | |
78 // Set region id to empty string because region couldn't be inferred. | |
79 I18NUtils::StrNCopy(region_id, ULOC_COUNTRY_CAPACITY, ""); | |
80 } | |
81 | |
82 // Build JavaScript object that contains bcp and icu locale ID and region ID. | |
83 v8::Handle<v8::Object> locale = v8::Object::New(); | |
84 locale->Set(v8::String::New(kLocaleID), v8::String::New(result.bcp47_id)); | |
85 locale->Set(v8::String::New(kICULocaleID), v8::String::New(result.icu_id)); | |
86 locale->Set(v8::String::New(kRegionID), v8::String::New(region_id)); | |
87 | |
88 return handle_scope.Close(locale); | |
89 } | |
90 | |
91 bool I18NLocale::GetBestMatchForRegionID( | |
92 const char* locale_id, v8::Handle<v8::Value> region_id, char* result) { | |
93 if (region_id->IsString() && region_id->ToString()->Length() != 0) { | |
94 icu::Locale user_locale( | |
95 icu::Locale("und", *v8::String::Utf8Value(region_id->ToString()))); | |
96 I18NUtils::StrNCopy( | |
97 result, ULOC_COUNTRY_CAPACITY, user_locale.getCountry()); | |
98 return true; | |
99 } | |
100 // Maximize locale_id to infer the region (e.g. expand "de" to "de-Latn-DE" | |
101 // and grab "DE" from the result). | |
102 UErrorCode status = U_ZERO_ERROR; | |
103 char maximized_locale[ULOC_FULLNAME_CAPACITY]; | |
104 uloc_addLikelySubtags( | |
105 locale_id, maximized_locale, ULOC_FULLNAME_CAPACITY, &status); | |
106 uloc_getCountry(maximized_locale, result, ULOC_COUNTRY_CAPACITY, &status); | |
107 | |
108 return !U_FAILURE(status); | |
109 } | |
110 | |
111 } } // namespace v8::internal | |
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