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Map ISO 15924 codes to internal IME script codes. 

This way we can support all the languages for which we define a script code.

Bug 19340741.

Change-Id: Ia80eca4cc2511b70f11058f73bd31746948ded19
main
Dan Zivkovic 2015-02-12 11:00:06 -08:00
parent 4084fa5cae
commit 98596e51a1
1 changed files with 34 additions and 33 deletions
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67
java/src/com/android/inputmethod/latin/utils/ScriptUtils.java
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@ -23,9 +23,10 @@ import java.util.TreeMap;
* A class to help with handling different writing scripts. * A class to help with handling different writing scripts.
*/ */
public class ScriptUtils { public class ScriptUtils {
// Used for hardware keyboards // Used for hardware keyboards
public static final int SCRIPT_UNKNOWN = -1; public static final int SCRIPT_UNKNOWN = -1;
// TODO: should we use ISO 15924 identifiers instead?
public static final int SCRIPT_ARABIC = 0; public static final int SCRIPT_ARABIC = 0;
public static final int SCRIPT_ARMENIAN = 1; public static final int SCRIPT_ARMENIAN = 1;
public static final int SCRIPT_BENGALI = 2; public static final int SCRIPT_BENGALI = 2;
@ -44,34 +45,29 @@ public class ScriptUtils {
public static final int SCRIPT_TAMIL = 15; public static final int SCRIPT_TAMIL = 15;
public static final int SCRIPT_TELUGU = 16; public static final int SCRIPT_TELUGU = 16;
public static final int SCRIPT_THAI = 17; public static final int SCRIPT_THAI = 17;
public static final TreeMap<String, Integer> mSpellCheckerLanguageToScript;
private static final TreeMap<String, Integer> mIso15924toImeScriptCode;
static { static {
// List of the supported languages and their associated script. We won't check mIso15924toImeScriptCode = new TreeMap<>();
// words written in another script than the selected script, because we know we mIso15924toImeScriptCode.put("Arab", SCRIPT_ARABIC);
// don't have those in our dictionary so we will underline everything and we mIso15924toImeScriptCode.put("Armn", SCRIPT_ARMENIAN);
// will never have any suggestions, so it makes no sense checking them, and this mIso15924toImeScriptCode.put("Beng", SCRIPT_BENGALI);
// is done in {@link #shouldFilterOut}. Also, the script is used to choose which mIso15924toImeScriptCode.put("Cyrl", SCRIPT_CYRILLIC);
// proximity to pass to the dictionary descent algorithm. mIso15924toImeScriptCode.put("Deva", SCRIPT_DEVANAGARI);
// IMPORTANT: this only contains languages - do not write countries in there. mIso15924toImeScriptCode.put("Geor", SCRIPT_GEORGIAN);
// Only the language is searched from the map. mIso15924toImeScriptCode.put("Grek", SCRIPT_GREEK);
mSpellCheckerLanguageToScript = new TreeMap<>(); mIso15924toImeScriptCode.put("Hebr", SCRIPT_HEBREW);
mSpellCheckerLanguageToScript.put("cs", SCRIPT_LATIN); mIso15924toImeScriptCode.put("Knda", SCRIPT_KANNADA);
mSpellCheckerLanguageToScript.put("da", SCRIPT_LATIN); mIso15924toImeScriptCode.put("Khmr", SCRIPT_KHMER);
mSpellCheckerLanguageToScript.put("de", SCRIPT_LATIN); mIso15924toImeScriptCode.put("Laoo", SCRIPT_LAO);
mSpellCheckerLanguageToScript.put("el", SCRIPT_GREEK); mIso15924toImeScriptCode.put("Latn", SCRIPT_LATIN);
mSpellCheckerLanguageToScript.put("en", SCRIPT_LATIN); mIso15924toImeScriptCode.put("Mlym", SCRIPT_MALAYALAM);
mSpellCheckerLanguageToScript.put("es", SCRIPT_LATIN); mIso15924toImeScriptCode.put("Mymr", SCRIPT_MYANMAR);
mSpellCheckerLanguageToScript.put("fi", SCRIPT_LATIN); mIso15924toImeScriptCode.put("Sinh", SCRIPT_SINHALA);
mSpellCheckerLanguageToScript.put("fr", SCRIPT_LATIN); mIso15924toImeScriptCode.put("Taml", SCRIPT_TAMIL);
mSpellCheckerLanguageToScript.put("hr", SCRIPT_LATIN); mIso15924toImeScriptCode.put("Telu", SCRIPT_TELUGU);
mSpellCheckerLanguageToScript.put("it", SCRIPT_LATIN); mIso15924toImeScriptCode.put("Thai", SCRIPT_THAI);
mSpellCheckerLanguageToScript.put("lt", SCRIPT_LATIN);
mSpellCheckerLanguageToScript.put("lv", SCRIPT_LATIN);
mSpellCheckerLanguageToScript.put("nb", SCRIPT_LATIN);
mSpellCheckerLanguageToScript.put("nl", SCRIPT_LATIN);
mSpellCheckerLanguageToScript.put("pt", SCRIPT_LATIN);
mSpellCheckerLanguageToScript.put("sl", SCRIPT_LATIN);
mSpellCheckerLanguageToScript.put("ru", SCRIPT_CYRILLIC);
} }
/* /*
* Returns whether the code point is a letter that makes sense for the specified * Returns whether the code point is a letter that makes sense for the specified
@ -181,12 +177,17 @@ public class ScriptUtils {
} }
} }
/**
* @param locale spell checker locale
* @return internal Latin IME script code that maps to an ISO 15924 script code
* {@see http://unicode.org/iso15924/iso15924-codes.html}
*/
public static int getScriptFromSpellCheckerLocale(final Locale locale) { public static int getScriptFromSpellCheckerLocale(final Locale locale) {
final Integer script = mSpellCheckerLanguageToScript.get(locale.getLanguage()); String isoScriptCode = locale.getScript();
if (null == script) { Integer imeScriptCode = mIso15924toImeScriptCode.get(isoScriptCode);
throw new RuntimeException("We have been called with an unsupported language: \"" if (imeScriptCode == null) {
+ locale.getLanguage() + "\". Framework bug?"); throw new RuntimeException("Unsupported ISO 15924 code: " + isoScriptCode);
} }
return script; return imeScriptCode;
} }
} }