1 // Copyright (C) 2016 and later: Unicode, Inc. and others.
2 // License & terms of use: http://www.unicode.org/copyright.html
4 *******************************************************************************
6 * Copyright (C) 1997-2012, International Business Machines
7 * Corporation and others. All Rights Reserved.
9 *******************************************************************************
10 * file name: loclikely.cpp
12 * tab size: 8 (not used)
15 * created on: 2010feb25
16 * created by: Markus W. Scherer
18 * Code for miscellaneous locale-related resource bundle data access,
19 * separated out from other .cpp files
20 * that then do not depend on resource bundle code and this data.
23 #include "unicode/utypes.h"
24 #include "unicode/putil.h"
25 #include "unicode/uloc.h"
26 #include "unicode/ures.h"
32 * Lookup a resource bundle table item with fallback on the table level.
33 * Regular resource bundle lookups perform fallback to parent locale bundles
34 * and eventually the root bundle, but only for top-level items.
35 * This function takes the name of a top-level table and of an item in that table
36 * and performs a lookup of both, falling back until a bundle contains a table
39 * Note: Only the opening of entire bundles falls back through the default locale
40 * before root. Once a bundle is open, item lookups do not go through the
41 * default locale because that would result in a mix of languages that is
42 * unpredictable to the programmer and most likely useless.
44 U_CAPI const UChar * U_EXPORT2
45 uloc_getTableStringWithFallback(const char *path, const char *locale,
46 const char *tableKey, const char *subTableKey,
49 UErrorCode *pErrorCode)
51 /* char localeBuffer[ULOC_FULLNAME_CAPACITY*4];*/
52 UResourceBundle *rb=NULL, table, subTable;
53 const UChar *item=NULL;
55 char explicitFallbackName[ULOC_FULLNAME_CAPACITY] = {0};
58 * open the bundle for the current locale
59 * this falls back through the locale's chain to root
61 errorCode=U_ZERO_ERROR;
62 rb=ures_open(path, locale, &errorCode);
64 if(U_FAILURE(errorCode)) {
65 /* total failure, not even root could be opened */
66 *pErrorCode=errorCode;
68 } else if(errorCode==U_USING_DEFAULT_WARNING ||
69 (errorCode==U_USING_FALLBACK_WARNING && *pErrorCode!=U_USING_DEFAULT_WARNING)
71 /* set the "strongest" error code (success->fallback->default->failure) */
72 *pErrorCode=errorCode;
76 ures_initStackObject(&table);
77 ures_initStackObject(&subTable);
78 ures_getByKeyWithFallback(rb, tableKey, &table, &errorCode);
80 if (subTableKey != NULL) {
82 ures_getByKeyWithFallback(&table,subTableKey, &subTable, &errorCode);
83 item = ures_getStringByKeyWithFallback(&subTable, itemKey, pLength, &errorCode);
84 if(U_FAILURE(errorCode)){
85 *pErrorCode = errorCode;
90 ures_getByKeyWithFallback(&table,subTableKey, &table, &errorCode);
92 if(U_SUCCESS(errorCode)){
93 item = ures_getStringByKeyWithFallback(&table, itemKey, pLength, &errorCode);
94 if(U_FAILURE(errorCode)){
95 const char* replacement = NULL;
96 *pErrorCode = errorCode; /*save the errorCode*/
97 errorCode = U_ZERO_ERROR;
98 /* may be a deprecated code */
99 if(uprv_strcmp(tableKey, "Countries")==0){
100 replacement = uloc_getCurrentCountryID(itemKey);
101 }else if(uprv_strcmp(tableKey, "Languages")==0){
102 replacement = uloc_getCurrentLanguageID(itemKey);
104 /*pointer comparison is ok since uloc_getCurrentCountryID & uloc_getCurrentLanguageID return the key itself is replacement is not found*/
105 if(replacement!=NULL && itemKey != replacement){
106 item = ures_getStringByKeyWithFallback(&table, replacement, pLength, &errorCode);
107 if(U_SUCCESS(errorCode)){
108 *pErrorCode = errorCode;
117 if(U_FAILURE(errorCode)){
119 /* still can't figure out ?.. try the fallback mechanism */
121 const UChar* fallbackLocale = NULL;
122 *pErrorCode = errorCode;
123 errorCode = U_ZERO_ERROR;
125 fallbackLocale = ures_getStringByKeyWithFallback(&table, "Fallback", &len, &errorCode);
126 if(U_FAILURE(errorCode)){
127 *pErrorCode = errorCode;
131 u_UCharsToChars(fallbackLocale, explicitFallbackName, len);
133 /* guard against recursive fallback */
134 if(uprv_strcmp(explicitFallbackName, locale)==0){
135 *pErrorCode = U_INTERNAL_PROGRAM_ERROR;
139 rb = ures_open(path, explicitFallbackName, &errorCode);
140 if(U_FAILURE(errorCode)){
141 *pErrorCode = errorCode;
144 /* succeeded in opening the fallback bundle .. continue and try to fetch the item */
149 /* done with the locale string - ready to close table and rb */
150 ures_close(&subTable);
157 _uloc_getOrientationHelper(const char* localeId,
161 ULayoutType result = ULOC_LAYOUT_UNKNOWN;
163 if (!U_FAILURE(*status)) {
165 char localeBuffer[ULOC_FULLNAME_CAPACITY];
167 uloc_canonicalize(localeId, localeBuffer, sizeof(localeBuffer), status);
169 if (!U_FAILURE(*status)) {
170 const UChar* const value =
171 uloc_getTableStringWithFallback(
180 if (!U_FAILURE(*status) && length != 0) {
183 case 0x0062: /* 'b' */
184 result = ULOC_LAYOUT_BTT;
186 case 0x006C: /* 'l' */
187 result = ULOC_LAYOUT_LTR;
189 case 0x0072: /* 'r' */
190 result = ULOC_LAYOUT_RTL;
192 case 0x0074: /* 't' */
193 result = ULOC_LAYOUT_TTB;
196 *status = U_INTERNAL_PROGRAM_ERROR;
206 U_CAPI ULayoutType U_EXPORT2
207 uloc_getCharacterOrientation(const char* localeId,
210 return _uloc_getOrientationHelper(localeId, "characters", status);
214 * Get the layout line orientation for the specified locale.
216 * @param localeID locale name
217 * @param status Error status
218 * @return an enum indicating the layout orientation for lines.
220 U_CAPI ULayoutType U_EXPORT2
221 uloc_getLineOrientation(const char* localeId,
224 return _uloc_getOrientationHelper(localeId, "lines", status);