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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "base/i18n/rtl.h" | 5 #include "base/i18n/rtl.h" |
6 | 6 |
7 #include "base/files/file_path.h" | 7 #include "base/files/file_path.h" |
8 #include "base/logging.h" | 8 #include "base/logging.h" |
9 #include "base/strings/string_util.h" | 9 #include "base/strings/string_util.h" |
10 #include "base/strings/sys_string_conversions.h" | 10 #include "base/strings/sys_string_conversions.h" |
11 #include "base/strings/utf_string_conversions.h" | 11 #include "base/strings/utf_string_conversions.h" |
12 #include "third_party/icu/source/common/unicode/locid.h" | 12 #include "third_party/icu/source/common/unicode/locid.h" |
13 #include "third_party/icu/source/common/unicode/uchar.h" | 13 #include "third_party/icu/source/common/unicode/uchar.h" |
14 #include "third_party/icu/source/common/unicode/uscript.h" | 14 #include "third_party/icu/source/common/unicode/uscript.h" |
15 #include "third_party/icu/source/i18n/unicode/coll.h" | 15 #include "third_party/icu/source/i18n/unicode/coll.h" |
16 | 16 |
17 namespace { | 17 namespace { |
18 | 18 |
19 // Extract language, country and variant, but ignore keywords. For example, | |
20 // en-US, ca@valencia, ca-ES@valencia. | |
21 std::string GetLocaleString(const icu::Locale& locale) { | |
22 const char* language = locale.getLanguage(); | |
23 const char* country = locale.getCountry(); | |
24 const char* variant = locale.getVariant(); | |
25 | |
26 std::string result = | |
27 (language != NULL && *language != '\0') ? language : "und"; | |
28 | |
29 if (country != NULL && *country != '\0') { | |
30 result += '-'; | |
31 result += country; | |
32 } | |
33 | |
34 if (variant != NULL && *variant != '\0') { | |
35 std::string variant_str(variant); | |
36 base::StringToLowerASCII(&variant_str); | |
37 result += '@' + variant_str; | |
38 } | |
39 | |
40 return result; | |
41 } | |
42 | |
43 // Returns LEFT_TO_RIGHT or RIGHT_TO_LEFT if |character| has strong | 19 // Returns LEFT_TO_RIGHT or RIGHT_TO_LEFT if |character| has strong |
44 // directionality, returns UNKNOWN_DIRECTION if it doesn't. Please refer to | 20 // directionality, returns UNKNOWN_DIRECTION if it doesn't. Please refer to |
45 // http://unicode.org/reports/tr9/ for more information. | 21 // http://unicode.org/reports/tr9/ for more information. |
46 base::i18n::TextDirection GetCharacterDirection(UChar32 character) { | 22 base::i18n::TextDirection GetCharacterDirection(UChar32 character) { |
47 // Now that we have the character, we use ICU in order to query for the | 23 // Now that we have the character, we use ICU in order to query for the |
48 // appropriate Unicode BiDi character type. | 24 // appropriate Unicode BiDi character type. |
49 int32_t property = u_getIntPropertyValue(character, UCHAR_BIDI_CLASS); | 25 int32_t property = u_getIntPropertyValue(character, UCHAR_BIDI_CLASS); |
50 if ((property == U_RIGHT_TO_LEFT) || | 26 if ((property == U_RIGHT_TO_LEFT) || |
51 (property == U_RIGHT_TO_LEFT_ARABIC) || | 27 (property == U_RIGHT_TO_LEFT_ARABIC) || |
52 (property == U_RIGHT_TO_LEFT_EMBEDDING) || | 28 (property == U_RIGHT_TO_LEFT_EMBEDDING) || |
53 (property == U_RIGHT_TO_LEFT_OVERRIDE)) { | 29 (property == U_RIGHT_TO_LEFT_OVERRIDE)) { |
54 return base::i18n::RIGHT_TO_LEFT; | 30 return base::i18n::RIGHT_TO_LEFT; |
55 } else if ((property == U_LEFT_TO_RIGHT) || | 31 } else if ((property == U_LEFT_TO_RIGHT) || |
56 (property == U_LEFT_TO_RIGHT_EMBEDDING) || | 32 (property == U_LEFT_TO_RIGHT_EMBEDDING) || |
57 (property == U_LEFT_TO_RIGHT_OVERRIDE)) { | 33 (property == U_LEFT_TO_RIGHT_OVERRIDE)) { |
58 return base::i18n::LEFT_TO_RIGHT; | 34 return base::i18n::LEFT_TO_RIGHT; |
59 } | 35 } |
60 return base::i18n::UNKNOWN_DIRECTION; | 36 return base::i18n::UNKNOWN_DIRECTION; |
61 } | 37 } |
62 | 38 |
63 } // namespace | 39 } // namespace |
64 | 40 |
65 namespace base { | 41 namespace base { |
66 namespace i18n { | 42 namespace i18n { |
67 | 43 |
68 // Represents the locale-specific ICU text direction. | 44 // Represents the locale-specific ICU text direction. |
69 static TextDirection g_icu_text_direction = UNKNOWN_DIRECTION; | 45 static TextDirection g_icu_text_direction = UNKNOWN_DIRECTION; |
70 | 46 |
71 // Convert the ICU default locale to a string. | |
72 std::string GetConfiguredLocale() { | |
73 return GetLocaleString(icu::Locale::getDefault()); | |
74 } | |
75 | |
76 // Convert the ICU canonicalized locale to a string. | |
77 std::string GetCanonicalLocale(const char* locale) { | |
78 return GetLocaleString(icu::Locale::createCanonical(locale)); | |
79 } | |
80 | |
81 // Convert Chrome locale name to ICU locale name | 47 // Convert Chrome locale name to ICU locale name |
82 std::string ICULocaleName(const std::string& locale_string) { | 48 std::string ICULocaleName(const std::string& locale_string) { |
83 // If not Spanish, just return it. | 49 // If not Spanish, just return it. |
84 if (locale_string.substr(0, 2) != "es") | 50 if (locale_string.substr(0, 2) != "es") |
85 return locale_string; | 51 return locale_string; |
86 // Expand es to es-ES. | 52 // Expand es to es-ES. |
87 if (LowerCaseEqualsASCII(locale_string, "es")) | 53 if (LowerCaseEqualsASCII(locale_string, "es")) |
88 return "es-ES"; | 54 return "es-ES"; |
89 // Map es-419 (Latin American Spanish) to es-FOO depending on the system | 55 // Map es-419 (Latin American Spanish) to es-FOO depending on the system |
90 // locale. If it's es-RR other than es-ES, map to es-RR. Otherwise, map | 56 // locale. If it's es-RR other than es-ES, map to es-RR. Otherwise, map |
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385 begin == kRightToLeftOverride) | 351 begin == kRightToLeftOverride) |
386 ++begin_index; | 352 ++begin_index; |
387 size_t end_index = text.length() - 1; | 353 size_t end_index = text.length() - 1; |
388 if (text[end_index] == kPopDirectionalFormatting) | 354 if (text[end_index] == kPopDirectionalFormatting) |
389 --end_index; | 355 --end_index; |
390 return text.substr(begin_index, end_index - begin_index + 1); | 356 return text.substr(begin_index, end_index - begin_index + 1); |
391 } | 357 } |
392 | 358 |
393 } // namespace i18n | 359 } // namespace i18n |
394 } // namespace base | 360 } // namespace base |
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