/* * Copyright (C) 2017 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include #include #include #include #include #include #include #include namespace android { static std::string buildFileName(const std::string& locale) { constexpr char SYSTEM_HYPHENATOR_PREFIX[] = "/system/usr/hyphen-data/hyph-"; constexpr char SYSTEM_HYPHENATOR_SUFFIX[] = ".hyb"; std::string lowerLocale; lowerLocale.reserve(locale.size()); std::transform(locale.begin(), locale.end(), std::back_inserter(lowerLocale), ::tolower); return SYSTEM_HYPHENATOR_PREFIX + lowerLocale + SYSTEM_HYPHENATOR_SUFFIX; } static const uint8_t* mmapPatternFile(const std::string& locale) { const std::string hyFilePath = buildFileName(locale); const int fd = open(hyFilePath.c_str(), O_RDONLY | O_CLOEXEC); if (fd == -1) { return nullptr; // Open failed. } struct stat st = {}; if (fstat(fd, &st) == -1) { // Unlikely to happen. close(fd); return nullptr; } void* ptr = mmap(nullptr, st.st_size, PROT_READ, MAP_SHARED, fd, 0 /* offset */); close(fd); if (ptr == MAP_FAILED) { return nullptr; } return reinterpret_cast(ptr); } static void addHyphenatorWithoutPatternFile(const std::string& locale, int minPrefix, int minSuffix) { minikin::addHyphenator(locale, minikin::Hyphenator::loadBinary( nullptr, minPrefix, minSuffix, locale)); } static void addHyphenator(const std::string& locale, int minPrefix, int minSuffix) { const uint8_t* ptr = mmapPatternFile(locale); if (ptr == nullptr) { ALOGE("Unable to find pattern file or unable to map it for %s", locale.c_str()); return; } minikin::addHyphenator(locale, minikin::Hyphenator::loadBinary( ptr, minPrefix, minSuffix, locale)); } static void addHyphenatorAlias(const std::string& from, const std::string& to) { minikin::addHyphenatorAlias(from, to); } static void init() { // TODO: Confirm that these are the best values. Various sources suggest (1, 1), but that // appears too small. constexpr int INDIC_MIN_PREFIX = 2; constexpr int INDIC_MIN_SUFFIX = 2; addHyphenator("af", 1, 1); // Afrikaans addHyphenator("am", 1, 1); // Amharic addHyphenator("as", INDIC_MIN_PREFIX, INDIC_MIN_SUFFIX); // Assamese addHyphenator("be", 2, 2); // Belarusian addHyphenator("bg", 2, 2); // Bulgarian addHyphenator("bn", INDIC_MIN_PREFIX, INDIC_MIN_SUFFIX); // Bengali addHyphenator("cs", 2, 2); // Czech addHyphenator("cu", 1, 2); // Church Slavonic addHyphenator("cy", 2, 3); // Welsh addHyphenator("da", 2, 2); // Danish addHyphenator("de-1901", 2, 2); // German 1901 orthography addHyphenator("de-1996", 2, 2); // German 1996 orthography addHyphenator("de-CH-1901", 2, 2); // Swiss High German 1901 orthography addHyphenator("el", 1, 1); // Greek addHyphenator("en-GB", 2, 3); // British English addHyphenator("en-US", 2, 3); // American English addHyphenator("es", 2, 2); // Spanish addHyphenator("et", 2, 3); // Estonian addHyphenator("eu", 2, 2); // Basque addHyphenator("fr", 2, 3); // French addHyphenator("ga", 2, 3); // Irish addHyphenator("gl", 2, 2); // Galician addHyphenator("gu", INDIC_MIN_PREFIX, INDIC_MIN_SUFFIX); // Gujarati addHyphenator("hi", INDIC_MIN_PREFIX, INDIC_MIN_SUFFIX); // Hindi addHyphenator("hr", 2, 2); // Croatian addHyphenator("hu", 2, 2); // Hungarian // texhyphen sources say Armenian may be (1, 2); but that it needs confirmation. // Going with a more conservative value of (2, 2) for now. addHyphenator("hy", 2, 2); // Armenian addHyphenator("it", 2, 2); // Italian addHyphenator("ka", 1, 2); // Georgian addHyphenator("kn", INDIC_MIN_PREFIX, INDIC_MIN_SUFFIX); // Kannada addHyphenator("la", 2, 2); // Latin addHyphenator("lt", 2, 2); // Lithuanian addHyphenator("lv", 2, 2); // Latvian addHyphenator("ml", INDIC_MIN_PREFIX, INDIC_MIN_SUFFIX); // Malayalam addHyphenator("mn-Cyrl", 2, 2); // Mongolian in Cyrillic script addHyphenator("mr", INDIC_MIN_PREFIX, INDIC_MIN_SUFFIX); // Marathi addHyphenator("nb", 2, 2); // Norwegian Bokmål addHyphenator("nl", 2, 2); // Dutch addHyphenator("nn", 2, 2); // Norwegian Nynorsk addHyphenator("or", INDIC_MIN_PREFIX, INDIC_MIN_SUFFIX); // Oriya addHyphenator("pa", INDIC_MIN_PREFIX, INDIC_MIN_SUFFIX); // Punjabi addHyphenator("pl", 2, 2); // Polish addHyphenator("pt", 2, 3); // Portuguese addHyphenator("ru", 2, 2); // Russian addHyphenator("sk", 2, 2); // Slovak addHyphenator("sl", 2, 2); // Slovenian addHyphenator("sq", 2, 2); // Albanian addHyphenator("sv", 1, 2); // Swedish addHyphenator("ta", INDIC_MIN_PREFIX, INDIC_MIN_SUFFIX); // Tamil addHyphenator("te", INDIC_MIN_PREFIX, INDIC_MIN_SUFFIX); // Telugu addHyphenator("tk", 2, 2); // Turkmen addHyphenator("uk", 2, 2); // Ukrainian addHyphenator("und-Ethi", 1, 1); // Any language in Ethiopic script // Following two hyphenators do not have pattern files but there is some special logic based on // language. addHyphenatorWithoutPatternFile("ca", 2, 2); // Catalan // English locales that fall back to en-US. The data is from CLDR. It's all English locales, // minus the locales whose parent is en-001 (from supplementalData.xml, under ). // TODO: Figure out how to get this from ICU. addHyphenatorAlias("en-AS", "en-US"); // English (American Samoa) addHyphenatorAlias("en-GU", "en-US"); // English (Guam) addHyphenatorAlias("en-MH", "en-US"); // English (Marshall Islands) addHyphenatorAlias("en-MP", "en-US"); // English (Northern Mariana Islands) addHyphenatorAlias("en-PR", "en-US"); // English (Puerto Rico) addHyphenatorAlias("en-UM", "en-US"); // English (United States Minor Outlying Islands) addHyphenatorAlias("en-VI", "en-US"); // English (Virgin Islands) // All English locales other than those falling back to en-US are mapped to en-GB. addHyphenatorAlias("en", "en-GB"); // For German, we're assuming the 1996 (and later) orthography by default. addHyphenatorAlias("de", "de-1996"); // Liechtenstein uses the Swiss hyphenation rules for the 1901 orthography. addHyphenatorAlias("de-LI-1901", "de-CH-1901"); // Norwegian is very probably Norwegian Bokmål. addHyphenatorAlias("no", "nb"); // Use mn-Cyrl. According to CLDR's likelySubtags.xml, mn is most likely to be mn-Cyrl. addHyphenatorAlias("mn", "mn-Cyrl"); // Mongolian // Fall back to Ethiopic script for languages likely to be written in Ethiopic. // Data is from CLDR's likelySubtags.xml. // TODO: Convert this to a mechanism using ICU4J's ULocale#addLikelySubtags(). addHyphenatorAlias("am", "und-Ethi"); // Amharic addHyphenatorAlias("byn", "und-Ethi"); // Blin addHyphenatorAlias("gez", "und-Ethi"); // Geʻez addHyphenatorAlias("ti", "und-Ethi"); // Tigrinya addHyphenatorAlias("wal", "und-Ethi"); // Wolaytta // Use Hindi as a fallback hyphenator for all languages written in Devanagari, etc. This makes // sense because our Indic patterns are not really linguistic, but script-based. addHyphenatorAlias("und-Beng", "bn"); // Bengali addHyphenatorAlias("und-Deva", "hi"); // Devanagari -> Hindi addHyphenatorAlias("und-Gujr", "gu"); // Gujarati addHyphenatorAlias("und-Guru", "pa"); // Gurmukhi -> Punjabi addHyphenatorAlias("und-Knda", "kn"); // Kannada addHyphenatorAlias("und-Mlym", "ml"); // Malayalam addHyphenatorAlias("und-Orya", "or"); // Oriya addHyphenatorAlias("und-Taml", "ta"); // Tamil addHyphenatorAlias("und-Telu", "te"); // Telugu } static const JNINativeMethod gMethods[] = { {"nInit", "()V", (void*) init}, }; int register_android_text_Hyphenator(JNIEnv* env) { return RegisterMethodsOrDie(env, "android/text/Hyphenator", gMethods, NELEM(gMethods)); } } // namespace android