| /* |
| ******************************************************************************* |
| * |
| * Copyright (C) 1997-2010, International Business Machines |
| * Corporation and others. All Rights Reserved. |
| * |
| ******************************************************************************* |
| * file name: loclikely.cpp |
| * encoding: US-ASCII |
| * tab size: 8 (not used) |
| * indentation:4 |
| * |
| * created on: 2010feb25 |
| * created by: Markus W. Scherer |
| * |
| * Code for miscellaneous locale-related resource bundle data access, |
| * separated out from other .cpp files |
| * that then do not depend on resource bundle code and this data. |
| */ |
| |
| #include "unicode/utypes.h" |
| #include "unicode/putil.h" |
| #include "unicode/uloc.h" |
| #include "unicode/ures.h" |
| #include "cstring.h" |
| #include "ulocimp.h" |
| #include "uresimp.h" |
| |
| /* |
| * Lookup a resource bundle table item with fallback on the table level. |
| * Regular resource bundle lookups perform fallback to parent locale bundles |
| * and eventually the root bundle, but only for top-level items. |
| * This function takes the name of a top-level table and of an item in that table |
| * and performs a lookup of both, falling back until a bundle contains a table |
| * with this item. |
| * |
| * Note: Only the opening of entire bundles falls back through the default locale |
| * before root. Once a bundle is open, item lookups do not go through the |
| * default locale because that would result in a mix of languages that is |
| * unpredictable to the programmer and most likely useless. |
| */ |
| U_CAPI const UChar * U_EXPORT2 |
| uloc_getTableStringWithFallback(const char *path, const char *locale, |
| const char *tableKey, const char *subTableKey, |
| const char *itemKey, |
| int32_t *pLength, |
| UErrorCode *pErrorCode) |
| { |
| /* char localeBuffer[ULOC_FULLNAME_CAPACITY*4];*/ |
| UResourceBundle *rb=NULL, table, subTable; |
| const UChar *item=NULL; |
| UErrorCode errorCode; |
| char explicitFallbackName[ULOC_FULLNAME_CAPACITY] = {0}; |
| |
| /* |
| * open the bundle for the current locale |
| * this falls back through the locale's chain to root |
| */ |
| errorCode=U_ZERO_ERROR; |
| rb=ures_open(path, locale, &errorCode); |
| |
| if(U_FAILURE(errorCode)) { |
| /* total failure, not even root could be opened */ |
| *pErrorCode=errorCode; |
| return NULL; |
| } else if(errorCode==U_USING_DEFAULT_WARNING || |
| (errorCode==U_USING_FALLBACK_WARNING && *pErrorCode!=U_USING_DEFAULT_WARNING) |
| ) { |
| /* set the "strongest" error code (success->fallback->default->failure) */ |
| *pErrorCode=errorCode; |
| } |
| |
| for(;;){ |
| ures_initStackObject(&table); |
| ures_initStackObject(&subTable); |
| ures_getByKeyWithFallback(rb, tableKey, &table, &errorCode); |
| |
| if (subTableKey != NULL) { |
| /* |
| ures_getByKeyWithFallback(&table,subTableKey, &subTable, &errorCode); |
| item = ures_getStringByKeyWithFallback(&subTable, itemKey, pLength, &errorCode); |
| if(U_FAILURE(errorCode)){ |
| *pErrorCode = errorCode; |
| } |
| |
| break;*/ |
| |
| ures_getByKeyWithFallback(&table,subTableKey, &table, &errorCode); |
| } |
| if(U_SUCCESS(errorCode)){ |
| item = ures_getStringByKeyWithFallback(&table, itemKey, pLength, &errorCode); |
| if(U_FAILURE(errorCode)){ |
| const char* replacement = NULL; |
| *pErrorCode = errorCode; /*save the errorCode*/ |
| errorCode = U_ZERO_ERROR; |
| /* may be a deprecated code */ |
| if(uprv_strcmp(tableKey, "Countries")==0){ |
| replacement = uloc_getCurrentCountryID(itemKey); |
| }else if(uprv_strcmp(tableKey, "Languages")==0){ |
| replacement = uloc_getCurrentLanguageID(itemKey); |
| } |
| /*pointer comparison is ok since uloc_getCurrentCountryID & uloc_getCurrentLanguageID return the key itself is replacement is not found*/ |
| if(replacement!=NULL && itemKey != replacement){ |
| item = ures_getStringByKeyWithFallback(&table, replacement, pLength, &errorCode); |
| if(U_SUCCESS(errorCode)){ |
| *pErrorCode = errorCode; |
| break; |
| } |
| } |
| }else{ |
| break; |
| } |
| } |
| |
| if(U_FAILURE(errorCode)){ |
| |
| /* still can't figure out ?.. try the fallback mechanism */ |
| int32_t len = 0; |
| const UChar* fallbackLocale = NULL; |
| *pErrorCode = errorCode; |
| errorCode = U_ZERO_ERROR; |
| |
| fallbackLocale = ures_getStringByKeyWithFallback(&table, "Fallback", &len, &errorCode); |
| if(U_FAILURE(errorCode)){ |
| *pErrorCode = errorCode; |
| break; |
| } |
| |
| u_UCharsToChars(fallbackLocale, explicitFallbackName, len); |
| |
| /* guard against recursive fallback */ |
| if(uprv_strcmp(explicitFallbackName, locale)==0){ |
| *pErrorCode = U_INTERNAL_PROGRAM_ERROR; |
| break; |
| } |
| ures_close(rb); |
| rb = ures_open(path, explicitFallbackName, &errorCode); |
| if(U_FAILURE(errorCode)){ |
| *pErrorCode = errorCode; |
| break; |
| } |
| /* succeeded in opening the fallback bundle .. continue and try to fetch the item */ |
| }else{ |
| break; |
| } |
| } |
| /* done with the locale string - ready to close table and rb */ |
| ures_close(&subTable); |
| ures_close(&table); |
| ures_close(rb); |
| return item; |
| } |
| |
| static ULayoutType |
| _uloc_getOrientationHelper(const char* localeId, |
| const char* key, |
| UErrorCode *status) |
| { |
| ULayoutType result = ULOC_LAYOUT_UNKNOWN; |
| |
| if (!U_FAILURE(*status)) { |
| int32_t length = 0; |
| char localeBuffer[ULOC_FULLNAME_CAPACITY]; |
| |
| uloc_canonicalize(localeId, localeBuffer, sizeof(localeBuffer), status); |
| |
| if (!U_FAILURE(*status)) { |
| const UChar* const value = |
| uloc_getTableStringWithFallback( |
| NULL, |
| localeBuffer, |
| "layout", |
| NULL, |
| key, |
| &length, |
| status); |
| |
| if (!U_FAILURE(*status) && length != 0) { |
| switch(value[0]) |
| { |
| case 0x0062: /* 'b' */ |
| result = ULOC_LAYOUT_BTT; |
| break; |
| case 0x006C: /* 'l' */ |
| result = ULOC_LAYOUT_LTR; |
| break; |
| case 0x0072: /* 'r' */ |
| result = ULOC_LAYOUT_RTL; |
| break; |
| case 0x0074: /* 't' */ |
| result = ULOC_LAYOUT_TTB; |
| break; |
| default: |
| *status = U_INTERNAL_PROGRAM_ERROR; |
| break; |
| } |
| } |
| } |
| } |
| |
| return result; |
| } |
| |
| U_DRAFT ULayoutType U_EXPORT2 |
| uloc_getCharacterOrientation(const char* localeId, |
| UErrorCode *status) |
| { |
| return _uloc_getOrientationHelper(localeId, "characters", status); |
| } |
| |
| /** |
| * Get the layout line orientation for the specified locale. |
| * |
| * @param localeID locale name |
| * @param status Error status |
| * @return an enum indicating the layout orientation for lines. |
| * @stable ICU 4.0 |
| */ |
| U_DRAFT ULayoutType U_EXPORT2 |
| uloc_getLineOrientation(const char* localeId, |
| UErrorCode *status) |
| { |
| return _uloc_getOrientationHelper(localeId, "lines", status); |
| } |
