1 /*
2 *******************************************************************************
3 *
4 * Copyright (C) 1997-2011, International Business Machines
5 * Corporation and others. All Rights Reserved.
6 *
7 *******************************************************************************
8 * file name: locdispnames.cpp
9 * encoding: US-ASCII
10 * tab size: 8 (not used)
11 * indentation:4
12 *
13 * created on: 2010feb25
14 * created by: Markus W. Scherer
15 *
16 * Code for locale display names, separated out from other .cpp files
17 * that then do not depend on resource bundle code and display name data.
18 */
19
20 #include "unicode/utypes.h"
21 #include "unicode/brkiter.h"
22 #include "unicode/locid.h"
23 #include "unicode/uloc.h"
24 #include "unicode/ures.h"
25 #include "unicode/ustring.h"
26 #include "cmemory.h"
27 #include "cstring.h"
28 #include "putilimp.h"
29 #include "ulocimp.h"
30 #include "uresimp.h"
31 #include "ureslocs.h"
32 #include "ustr_imp.h"
33
34 // C++ API ----------------------------------------------------------------- ***
35
36 U_NAMESPACE_BEGIN
37
38 UnicodeString&
getDisplayLanguage(UnicodeString & dispLang) const39 Locale::getDisplayLanguage(UnicodeString& dispLang) const
40 {
41 return this->getDisplayLanguage(getDefault(), dispLang);
42 }
43
44 /*We cannot make any assumptions on the size of the output display strings
45 * Yet, since we are calling through to a C API, we need to set limits on
46 * buffer size. For all the following getDisplay functions we first attempt
47 * to fill up a stack allocated buffer. If it is to small we heap allocated
48 * the exact buffer we need copy it to the UnicodeString and delete it*/
49
50 UnicodeString&
getDisplayLanguage(const Locale & displayLocale,UnicodeString & result) const51 Locale::getDisplayLanguage(const Locale &displayLocale,
52 UnicodeString &result) const {
53 UChar *buffer;
54 UErrorCode errorCode=U_ZERO_ERROR;
55 int32_t length;
56
57 buffer=result.getBuffer(ULOC_FULLNAME_CAPACITY);
58 if(buffer==0) {
59 result.truncate(0);
60 return result;
61 }
62
63 length=uloc_getDisplayLanguage(fullName, displayLocale.fullName,
64 buffer, result.getCapacity(),
65 &errorCode);
66 result.releaseBuffer(U_SUCCESS(errorCode) ? length : 0);
67
68 if(errorCode==U_BUFFER_OVERFLOW_ERROR) {
69 buffer=result.getBuffer(length);
70 if(buffer==0) {
71 result.truncate(0);
72 return result;
73 }
74 errorCode=U_ZERO_ERROR;
75 length=uloc_getDisplayLanguage(fullName, displayLocale.fullName,
76 buffer, result.getCapacity(),
77 &errorCode);
78 result.releaseBuffer(U_SUCCESS(errorCode) ? length : 0);
79 }
80
81 return result;
82 }
83
84 UnicodeString&
getDisplayScript(UnicodeString & dispScript) const85 Locale::getDisplayScript(UnicodeString& dispScript) const
86 {
87 return this->getDisplayScript(getDefault(), dispScript);
88 }
89
90 UnicodeString&
getDisplayScript(const Locale & displayLocale,UnicodeString & result) const91 Locale::getDisplayScript(const Locale &displayLocale,
92 UnicodeString &result) const {
93 UChar *buffer;
94 UErrorCode errorCode=U_ZERO_ERROR;
95 int32_t length;
96
97 buffer=result.getBuffer(ULOC_FULLNAME_CAPACITY);
98 if(buffer==0) {
99 result.truncate(0);
100 return result;
101 }
102
103 length=uloc_getDisplayScript(fullName, displayLocale.fullName,
104 buffer, result.getCapacity(),
105 &errorCode);
106 result.releaseBuffer(U_SUCCESS(errorCode) ? length : 0);
107
108 if(errorCode==U_BUFFER_OVERFLOW_ERROR) {
109 buffer=result.getBuffer(length);
110 if(buffer==0) {
111 result.truncate(0);
112 return result;
113 }
114 errorCode=U_ZERO_ERROR;
115 length=uloc_getDisplayScript(fullName, displayLocale.fullName,
116 buffer, result.getCapacity(),
117 &errorCode);
118 result.releaseBuffer(U_SUCCESS(errorCode) ? length : 0);
119 }
120
121 return result;
122 }
123
124 UnicodeString&
getDisplayCountry(UnicodeString & dispCntry) const125 Locale::getDisplayCountry(UnicodeString& dispCntry) const
126 {
127 return this->getDisplayCountry(getDefault(), dispCntry);
128 }
129
130 UnicodeString&
getDisplayCountry(const Locale & displayLocale,UnicodeString & result) const131 Locale::getDisplayCountry(const Locale &displayLocale,
132 UnicodeString &result) const {
133 UChar *buffer;
134 UErrorCode errorCode=U_ZERO_ERROR;
135 int32_t length;
136
137 buffer=result.getBuffer(ULOC_FULLNAME_CAPACITY);
138 if(buffer==0) {
139 result.truncate(0);
140 return result;
141 }
142
143 length=uloc_getDisplayCountry(fullName, displayLocale.fullName,
144 buffer, result.getCapacity(),
145 &errorCode);
146 result.releaseBuffer(U_SUCCESS(errorCode) ? length : 0);
147
148 if(errorCode==U_BUFFER_OVERFLOW_ERROR) {
149 buffer=result.getBuffer(length);
150 if(buffer==0) {
151 result.truncate(0);
152 return result;
153 }
154 errorCode=U_ZERO_ERROR;
155 length=uloc_getDisplayCountry(fullName, displayLocale.fullName,
156 buffer, result.getCapacity(),
157 &errorCode);
158 result.releaseBuffer(U_SUCCESS(errorCode) ? length : 0);
159 }
160
161 return result;
162 }
163
164 UnicodeString&
getDisplayVariant(UnicodeString & dispVar) const165 Locale::getDisplayVariant(UnicodeString& dispVar) const
166 {
167 return this->getDisplayVariant(getDefault(), dispVar);
168 }
169
170 UnicodeString&
getDisplayVariant(const Locale & displayLocale,UnicodeString & result) const171 Locale::getDisplayVariant(const Locale &displayLocale,
172 UnicodeString &result) const {
173 UChar *buffer;
174 UErrorCode errorCode=U_ZERO_ERROR;
175 int32_t length;
176
177 buffer=result.getBuffer(ULOC_FULLNAME_CAPACITY);
178 if(buffer==0) {
179 result.truncate(0);
180 return result;
181 }
182
183 length=uloc_getDisplayVariant(fullName, displayLocale.fullName,
184 buffer, result.getCapacity(),
185 &errorCode);
186 result.releaseBuffer(U_SUCCESS(errorCode) ? length : 0);
187
188 if(errorCode==U_BUFFER_OVERFLOW_ERROR) {
189 buffer=result.getBuffer(length);
190 if(buffer==0) {
191 result.truncate(0);
192 return result;
193 }
194 errorCode=U_ZERO_ERROR;
195 length=uloc_getDisplayVariant(fullName, displayLocale.fullName,
196 buffer, result.getCapacity(),
197 &errorCode);
198 result.releaseBuffer(U_SUCCESS(errorCode) ? length : 0);
199 }
200
201 return result;
202 }
203
204 UnicodeString&
getDisplayName(UnicodeString & name) const205 Locale::getDisplayName( UnicodeString& name ) const
206 {
207 return this->getDisplayName(getDefault(), name);
208 }
209
210 UnicodeString&
getDisplayName(const Locale & displayLocale,UnicodeString & result) const211 Locale::getDisplayName(const Locale &displayLocale,
212 UnicodeString &result) const {
213 UChar *buffer;
214 UErrorCode errorCode=U_ZERO_ERROR;
215 int32_t length;
216
217 buffer=result.getBuffer(ULOC_FULLNAME_CAPACITY);
218 if(buffer==0) {
219 result.truncate(0);
220 return result;
221 }
222
223 length=uloc_getDisplayName(fullName, displayLocale.fullName,
224 buffer, result.getCapacity(),
225 &errorCode);
226 result.releaseBuffer(U_SUCCESS(errorCode) ? length : 0);
227
228 if(errorCode==U_BUFFER_OVERFLOW_ERROR) {
229 buffer=result.getBuffer(length);
230 if(buffer==0) {
231 result.truncate(0);
232 return result;
233 }
234 errorCode=U_ZERO_ERROR;
235 length=uloc_getDisplayName(fullName, displayLocale.fullName,
236 buffer, result.getCapacity(),
237 &errorCode);
238 result.releaseBuffer(U_SUCCESS(errorCode) ? length : 0);
239 }
240
241 return result;
242 }
243
244 #if ! UCONFIG_NO_BREAK_ITERATION
245
246 // -------------------------------------
247 // Gets the objectLocale display name in the default locale language.
248 UnicodeString& U_EXPORT2
getDisplayName(const Locale & objectLocale,UnicodeString & name)249 BreakIterator::getDisplayName(const Locale& objectLocale,
250 UnicodeString& name)
251 {
252 return objectLocale.getDisplayName(name);
253 }
254
255 // -------------------------------------
256 // Gets the objectLocale display name in the displayLocale language.
257 UnicodeString& U_EXPORT2
getDisplayName(const Locale & objectLocale,const Locale & displayLocale,UnicodeString & name)258 BreakIterator::getDisplayName(const Locale& objectLocale,
259 const Locale& displayLocale,
260 UnicodeString& name)
261 {
262 return objectLocale.getDisplayName(displayLocale, name);
263 }
264
265 #endif
266
267
268 U_NAMESPACE_END
269
270 // C API ------------------------------------------------------------------- ***
271
272 U_NAMESPACE_USE
273
274 /* ### Constants **************************************************/
275
276 /* These strings describe the resources we attempt to load from
277 the locale ResourceBundle data file.*/
278 static const char _kLanguages[] = "Languages";
279 static const char _kScripts[] = "Scripts";
280 static const char _kCountries[] = "Countries";
281 static const char _kVariants[] = "Variants";
282 static const char _kKeys[] = "Keys";
283 static const char _kTypes[] = "Types";
284 static const char _kRootName[] = "root";
285 static const char _kCurrency[] = "currency";
286 static const char _kCurrencies[] = "Currencies";
287 static const char _kLocaleDisplayPattern[] = "localeDisplayPattern";
288 static const char _kPattern[] = "pattern";
289 static const char _kSeparator[] = "separator";
290
291 /* ### Display name **************************************************/
292
293 static int32_t
_getStringOrCopyKey(const char * path,const char * locale,const char * tableKey,const char * subTableKey,const char * itemKey,const char * substitute,UChar * dest,int32_t destCapacity,UErrorCode * pErrorCode)294 _getStringOrCopyKey(const char *path, const char *locale,
295 const char *tableKey,
296 const char* subTableKey,
297 const char *itemKey,
298 const char *substitute,
299 UChar *dest, int32_t destCapacity,
300 UErrorCode *pErrorCode) {
301 const UChar *s = NULL;
302 int32_t length = 0;
303
304 if(itemKey==NULL) {
305 /* top-level item: normal resource bundle access */
306 UResourceBundle *rb;
307
308 rb=ures_open(path, locale, pErrorCode);
309
310 if(U_SUCCESS(*pErrorCode)) {
311 s=ures_getStringByKey(rb, tableKey, &length, pErrorCode);
312 /* see comment about closing rb near "return item;" in _res_getTableStringWithFallback() */
313 ures_close(rb);
314 }
315 } else {
316 /* Language code should not be a number. If it is, set the error code. */
317 if (!uprv_strncmp(tableKey, "Languages", 9) && uprv_strtol(itemKey, NULL, 10)) {
318 *pErrorCode = U_MISSING_RESOURCE_ERROR;
319 } else {
320 /* second-level item, use special fallback */
321 s=uloc_getTableStringWithFallback(path, locale,
322 tableKey,
323 subTableKey,
324 itemKey,
325 &length,
326 pErrorCode);
327 }
328 }
329
330 if(U_SUCCESS(*pErrorCode)) {
331 int32_t copyLength=uprv_min(length, destCapacity);
332 if(copyLength>0 && s != NULL) {
333 u_memcpy(dest, s, copyLength);
334 }
335 } else {
336 /* no string from a resource bundle: convert the substitute */
337 length=(int32_t)uprv_strlen(substitute);
338 u_charsToUChars(substitute, dest, uprv_min(length, destCapacity));
339 *pErrorCode=U_USING_DEFAULT_WARNING;
340 }
341
342 return u_terminateUChars(dest, destCapacity, length, pErrorCode);
343 }
344
345 typedef int32_t U_CALLCONV UDisplayNameGetter(const char *, char *, int32_t, UErrorCode *);
346
347 static int32_t
_getDisplayNameForComponent(const char * locale,const char * displayLocale,UChar * dest,int32_t destCapacity,UDisplayNameGetter * getter,const char * tag,UErrorCode * pErrorCode)348 _getDisplayNameForComponent(const char *locale,
349 const char *displayLocale,
350 UChar *dest, int32_t destCapacity,
351 UDisplayNameGetter *getter,
352 const char *tag,
353 UErrorCode *pErrorCode) {
354 char localeBuffer[ULOC_FULLNAME_CAPACITY*4];
355 int32_t length;
356 UErrorCode localStatus;
357 const char* root = NULL;
358
359 /* argument checking */
360 if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) {
361 return 0;
362 }
363
364 if(destCapacity<0 || (destCapacity>0 && dest==NULL)) {
365 *pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
366 return 0;
367 }
368
369 localStatus = U_ZERO_ERROR;
370 length=(*getter)(locale, localeBuffer, sizeof(localeBuffer), &localStatus);
371 if(U_FAILURE(localStatus) || localStatus==U_STRING_NOT_TERMINATED_WARNING) {
372 *pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
373 return 0;
374 }
375 if(length==0) {
376 return u_terminateUChars(dest, destCapacity, 0, pErrorCode);
377 }
378
379 root = tag == _kCountries ? U_ICUDATA_REGION : U_ICUDATA_LANG;
380
381 return _getStringOrCopyKey(root, displayLocale,
382 tag, NULL, localeBuffer,
383 localeBuffer,
384 dest, destCapacity,
385 pErrorCode);
386 }
387
388 U_CAPI int32_t U_EXPORT2
uloc_getDisplayLanguage(const char * locale,const char * displayLocale,UChar * dest,int32_t destCapacity,UErrorCode * pErrorCode)389 uloc_getDisplayLanguage(const char *locale,
390 const char *displayLocale,
391 UChar *dest, int32_t destCapacity,
392 UErrorCode *pErrorCode) {
393 return _getDisplayNameForComponent(locale, displayLocale, dest, destCapacity,
394 uloc_getLanguage, _kLanguages, pErrorCode);
395 }
396
397 U_CAPI int32_t U_EXPORT2
uloc_getDisplayScript(const char * locale,const char * displayLocale,UChar * dest,int32_t destCapacity,UErrorCode * pErrorCode)398 uloc_getDisplayScript(const char* locale,
399 const char* displayLocale,
400 UChar *dest, int32_t destCapacity,
401 UErrorCode *pErrorCode)
402 {
403 return _getDisplayNameForComponent(locale, displayLocale, dest, destCapacity,
404 uloc_getScript, _kScripts, pErrorCode);
405 }
406
407 U_CAPI int32_t U_EXPORT2
uloc_getDisplayCountry(const char * locale,const char * displayLocale,UChar * dest,int32_t destCapacity,UErrorCode * pErrorCode)408 uloc_getDisplayCountry(const char *locale,
409 const char *displayLocale,
410 UChar *dest, int32_t destCapacity,
411 UErrorCode *pErrorCode) {
412 return _getDisplayNameForComponent(locale, displayLocale, dest, destCapacity,
413 uloc_getCountry, _kCountries, pErrorCode);
414 }
415
416 /*
417 * TODO separate variant1_variant2_variant3...
418 * by getting each tag's display string and concatenating them with ", "
419 * in between - similar to uloc_getDisplayName()
420 */
421 U_CAPI int32_t U_EXPORT2
uloc_getDisplayVariant(const char * locale,const char * displayLocale,UChar * dest,int32_t destCapacity,UErrorCode * pErrorCode)422 uloc_getDisplayVariant(const char *locale,
423 const char *displayLocale,
424 UChar *dest, int32_t destCapacity,
425 UErrorCode *pErrorCode) {
426 return _getDisplayNameForComponent(locale, displayLocale, dest, destCapacity,
427 uloc_getVariant, _kVariants, pErrorCode);
428 }
429
430 /* Instead of having a separate pass for 'special' patterns, reintegrate the two
431 * so we don't get bitten by preflight bugs again. We can be reasonably efficient
432 * without two separate code paths, this code isn't that performance-critical.
433 *
434 * This code is general enough to deal with patterns that have a prefix or swap the
435 * language and remainder components, since we gave developers enough rope to do such
436 * things if they futz with the pattern data. But since we don't give them a way to
437 * specify a pattern for arbitrary combinations of components, there's not much use in
438 * that. I don't think our data includes such patterns, the only variable I know if is
439 * whether there is a space before the open paren, or not. Oh, and zh uses different
440 * chars than the standard open/close paren (which ja and ko use, btw).
441 */
442 U_CAPI int32_t U_EXPORT2
uloc_getDisplayName(const char * locale,const char * displayLocale,UChar * dest,int32_t destCapacity,UErrorCode * pErrorCode)443 uloc_getDisplayName(const char *locale,
444 const char *displayLocale,
445 UChar *dest, int32_t destCapacity,
446 UErrorCode *pErrorCode)
447 {
448 static const UChar defaultSeparator[3] = { 0x002c, 0x0020, 0x0000 }; /* comma + space */
449 static const int32_t defaultSepLen = 2;
450 static const UChar sub0[4] = { 0x007b, 0x0030, 0x007d , 0x0000 } ; /* {0} */
451 static const UChar sub1[4] = { 0x007b, 0x0031, 0x007d , 0x0000 } ; /* {1} */
452 static const int32_t subLen = 3;
453 static const UChar defaultPattern[10] = {
454 0x007b, 0x0030, 0x007d, 0x0020, 0x0028, 0x007b, 0x0031, 0x007d, 0x0029, 0x0000
455 }; /* {0} ({1}) */
456 static const int32_t defaultPatLen = 9;
457 static const int32_t defaultSub0Pos = 0;
458 static const int32_t defaultSub1Pos = 5;
459
460 int32_t length; /* of formatted result */
461
462 const UChar *separator;
463 int32_t sepLen = 0;
464 const UChar *pattern;
465 int32_t patLen = 0;
466 int32_t sub0Pos, sub1Pos;
467
468 UBool haveLang = TRUE; /* assume true, set false if we find we don't have
469 a lang component in the locale */
470 UBool haveRest = TRUE; /* assume true, set false if we find we don't have
471 any other component in the locale */
472 UBool retry = FALSE; /* set true if we need to retry, see below */
473
474 int32_t langi = 0; /* index of the language substitution (0 or 1), virtually always 0 */
475
476 if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) {
477 return 0;
478 }
479
480 if(destCapacity<0 || (destCapacity>0 && dest==NULL)) {
481 *pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
482 return 0;
483 }
484
485 {
486 UErrorCode status = U_ZERO_ERROR;
487 UResourceBundle* locbundle=ures_open(U_ICUDATA_LANG, displayLocale, &status);
488 UResourceBundle* dspbundle=ures_getByKeyWithFallback(locbundle, _kLocaleDisplayPattern,
489 NULL, &status);
490
491 separator=ures_getStringByKeyWithFallback(dspbundle, _kSeparator, &sepLen, &status);
492 pattern=ures_getStringByKeyWithFallback(dspbundle, _kPattern, &patLen, &status);
493
494 ures_close(dspbundle);
495 ures_close(locbundle);
496 }
497
498 /* If we couldn't find any data, then use the defaults */
499 if(sepLen == 0) {
500 separator = defaultSeparator;
501 sepLen = defaultSepLen;
502 }
503
504 if(patLen==0 || (patLen==defaultPatLen && !u_strncmp(pattern, defaultPattern, patLen))) {
505 pattern=defaultPattern;
506 patLen=defaultPatLen;
507 sub0Pos=defaultSub0Pos;
508 sub1Pos=defaultSub1Pos;
509 } else { /* non-default pattern */
510 UChar *p0=u_strstr(pattern, sub0);
511 UChar *p1=u_strstr(pattern, sub1);
512 if (p0==NULL || p1==NULL) {
513 *pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
514 return 0;
515 }
516 sub0Pos=p0-pattern;
517 sub1Pos=p1-pattern;
518 if (sub1Pos < sub0Pos) { /* a very odd pattern */
519 int32_t t=sub0Pos; sub0Pos=sub1Pos; sub1Pos=t;
520 langi=1;
521 }
522 }
523
524 /* We loop here because there is one case in which after the first pass we could need to
525 * reextract the data. If there's initial padding before the first element, we put in
526 * the padding and then write that element. If it turns out there's no second element,
527 * we didn't need the padding. If we do need the data (no preflight), and the first element
528 * would have fit but for the padding, we need to reextract. In this case (only) we
529 * adjust the parameters so padding is not added, and repeat.
530 */
531 do {
532 UChar* p=dest;
533 int32_t patPos=0; /* position in the pattern, used for non-substitution portions */
534 int32_t langLen=0; /* length of language substitution */
535 int32_t langPos=0; /* position in output of language substitution */
536 int32_t restLen=0; /* length of 'everything else' substitution */
537 int32_t restPos=0; /* position in output of 'everything else' substitution */
538 UEnumeration* kenum = NULL; /* keyword enumeration */
539
540 /* prefix of pattern, extremely likely to be empty */
541 if(sub0Pos) {
542 if(destCapacity >= sub0Pos) {
543 while (patPos < sub0Pos) {
544 *p++ = pattern[patPos++];
545 }
546 } else {
547 patPos=sub0Pos;
548 }
549 length=sub0Pos;
550 } else {
551 length=0;
552 }
553
554 for(int32_t subi=0,resti=0;subi<2;) { /* iterate through patterns 0 and 1*/
555 UBool subdone = FALSE; /* set true when ready to move to next substitution */
556
557 /* prep p and cap for calls to get display components, pin cap to 0 since
558 they complain if cap is negative */
559 int32_t cap=destCapacity-length;
560 if (cap <= 0) {
561 cap=0;
562 } else {
563 p=dest+length;
564 }
565
566 if (subi == langi) { /* {0}*/
567 if(haveLang) {
568 langPos=length;
569 langLen=uloc_getDisplayLanguage(locale, displayLocale, p, cap, pErrorCode);
570 length+=langLen;
571 haveLang=langLen>0;
572 }
573 subdone=TRUE;
574 } else { /* {1} */
575 if(!haveRest) {
576 subdone=TRUE;
577 } else {
578 int32_t len; /* length of component (plus other stuff) we just fetched */
579 switch(resti++) {
580 case 0:
581 restPos=length;
582 len=uloc_getDisplayScript(locale, displayLocale, p, cap, pErrorCode);
583 break;
584 case 1:
585 len=uloc_getDisplayCountry(locale, displayLocale, p, cap, pErrorCode);
586 break;
587 case 2:
588 len=uloc_getDisplayVariant(locale, displayLocale, p, cap, pErrorCode);
589 break;
590 case 3:
591 kenum = uloc_openKeywords(locale, pErrorCode);
592 /* fall through */
593 default: {
594 const char* kw=uenum_next(kenum, &len, pErrorCode);
595 if (kw == NULL) {
596 uenum_close(kenum);
597 len=0; /* mark that we didn't add a component */
598 subdone=TRUE;
599 } else {
600 /* incorporating this behavior into the loop made it even more complex,
601 so just special case it here */
602 len = uloc_getDisplayKeyword(kw, displayLocale, p, cap, pErrorCode);
603 if(len) {
604 if(len < cap) {
605 p[len]=0x3d; /* '=', assume we'll need it */
606 }
607 len+=1;
608
609 /* adjust for call to get keyword */
610 cap-=len;
611 if(cap <= 0) {
612 cap=0;
613 } else {
614 p+=len;
615 }
616 }
617 /* reset for call below */
618 if(*pErrorCode == U_BUFFER_OVERFLOW_ERROR) {
619 *pErrorCode=U_ZERO_ERROR;
620 }
621 int32_t vlen = uloc_getDisplayKeywordValue(locale, kw, displayLocale,
622 p, cap, pErrorCode);
623 if(len) {
624 if(vlen==0) {
625 --len; /* remove unneeded '=' */
626 }
627 /* restore cap and p to what they were at start */
628 cap=destCapacity-length;
629 if(cap <= 0) {
630 cap=0;
631 } else {
632 p=dest+length;
633 }
634 }
635 len+=vlen; /* total we added for key + '=' + value */
636 }
637 } break;
638 } /* end switch */
639
640 if (len>0) {
641 /* we addeed a component, so add separator and write it if there's room. */
642 if(len+sepLen<=cap) {
643 p+=len;
644 for(int32_t i=0;i<sepLen;++i) {
645 *p++=separator[i];
646 }
647 }
648 length+=len+sepLen;
649 } else if(subdone) {
650 /* remove separator if we added it */
651 if (length!=restPos) {
652 length-=sepLen;
653 }
654 restLen=length-restPos;
655 haveRest=restLen>0;
656 }
657 }
658 }
659
660 if(*pErrorCode == U_BUFFER_OVERFLOW_ERROR) {
661 *pErrorCode=U_ZERO_ERROR;
662 }
663
664 if(subdone) {
665 if(haveLang && haveRest) {
666 /* append internal portion of pattern, the first time,
667 or last portion of pattern the second time */
668 int32_t padLen;
669 patPos+=subLen;
670 padLen=(subi==0 ? sub1Pos : patLen)-patPos;
671 if(length+padLen < destCapacity) {
672 p=dest+length;
673 for(int32_t i=0;i<padLen;++i) {
674 *p++=pattern[patPos++];
675 }
676 } else {
677 patPos+=padLen;
678 }
679 length+=padLen;
680 } else if(subi==0) {
681 /* don't have first component, reset for second component */
682 sub0Pos=0;
683 length=0;
684 } else if(length>0) {
685 /* true length is the length of just the component we got. */
686 length=haveLang?langLen:restLen;
687 if(dest && sub0Pos!=0) {
688 if (sub0Pos+length<=destCapacity) {
689 /* first component not at start of result,
690 but we have full component in buffer. */
691 u_memmove(dest, dest+(haveLang?langPos:restPos), length);
692 } else {
693 /* would have fit, but didn't because of pattern prefix. */
694 sub0Pos=0; /* stops initial padding (and a second retry,
695 so we won't end up here again) */
696 retry=TRUE;
697 }
698 }
699 }
700
701 ++subi; /* move on to next substitution */
702 }
703 }
704 } while(retry);
705
706 return u_terminateUChars(dest, destCapacity, length, pErrorCode);
707 }
708
709 U_CAPI int32_t U_EXPORT2
uloc_getDisplayKeyword(const char * keyword,const char * displayLocale,UChar * dest,int32_t destCapacity,UErrorCode * status)710 uloc_getDisplayKeyword(const char* keyword,
711 const char* displayLocale,
712 UChar* dest,
713 int32_t destCapacity,
714 UErrorCode* status){
715
716 /* argument checking */
717 if(status==NULL || U_FAILURE(*status)) {
718 return 0;
719 }
720
721 if(destCapacity<0 || (destCapacity>0 && dest==NULL)) {
722 *status=U_ILLEGAL_ARGUMENT_ERROR;
723 return 0;
724 }
725
726
727 /* pass itemKey=NULL to look for a top-level item */
728 return _getStringOrCopyKey(U_ICUDATA_LANG, displayLocale,
729 _kKeys, NULL,
730 keyword,
731 keyword,
732 dest, destCapacity,
733 status);
734
735 }
736
737
738 #define UCURRENCY_DISPLAY_NAME_INDEX 1
739
740 U_CAPI int32_t U_EXPORT2
uloc_getDisplayKeywordValue(const char * locale,const char * keyword,const char * displayLocale,UChar * dest,int32_t destCapacity,UErrorCode * status)741 uloc_getDisplayKeywordValue( const char* locale,
742 const char* keyword,
743 const char* displayLocale,
744 UChar* dest,
745 int32_t destCapacity,
746 UErrorCode* status){
747
748
749 char keywordValue[ULOC_FULLNAME_CAPACITY*4];
750 int32_t capacity = ULOC_FULLNAME_CAPACITY*4;
751 int32_t keywordValueLen =0;
752
753 /* argument checking */
754 if(status==NULL || U_FAILURE(*status)) {
755 return 0;
756 }
757
758 if(destCapacity<0 || (destCapacity>0 && dest==NULL)) {
759 *status=U_ILLEGAL_ARGUMENT_ERROR;
760 return 0;
761 }
762
763 /* get the keyword value */
764 keywordValue[0]=0;
765 keywordValueLen = uloc_getKeywordValue(locale, keyword, keywordValue, capacity, status);
766
767 /*
768 * if the keyword is equal to currency .. then to get the display name
769 * we need to do the fallback ourselves
770 */
771 if(uprv_stricmp(keyword, _kCurrency)==0){
772
773 int32_t dispNameLen = 0;
774 const UChar *dispName = NULL;
775
776 UResourceBundle *bundle = ures_open(U_ICUDATA_CURR, displayLocale, status);
777 UResourceBundle *currencies = ures_getByKey(bundle, _kCurrencies, NULL, status);
778 UResourceBundle *currency = ures_getByKeyWithFallback(currencies, keywordValue, NULL, status);
779
780 dispName = ures_getStringByIndex(currency, UCURRENCY_DISPLAY_NAME_INDEX, &dispNameLen, status);
781
782 /*close the bundles */
783 ures_close(currency);
784 ures_close(currencies);
785 ures_close(bundle);
786
787 if(U_FAILURE(*status)){
788 if(*status == U_MISSING_RESOURCE_ERROR){
789 /* we just want to write the value over if nothing is available */
790 *status = U_USING_DEFAULT_WARNING;
791 }else{
792 return 0;
793 }
794 }
795
796 /* now copy the dispName over if not NULL */
797 if(dispName != NULL){
798 if(dispNameLen <= destCapacity){
799 uprv_memcpy(dest, dispName, dispNameLen * U_SIZEOF_UCHAR);
800 return u_terminateUChars(dest, destCapacity, dispNameLen, status);
801 }else{
802 *status = U_BUFFER_OVERFLOW_ERROR;
803 return dispNameLen;
804 }
805 }else{
806 /* we have not found the display name for the value .. just copy over */
807 if(keywordValueLen <= destCapacity){
808 u_charsToUChars(keywordValue, dest, keywordValueLen);
809 return u_terminateUChars(dest, destCapacity, keywordValueLen, status);
810 }else{
811 *status = U_BUFFER_OVERFLOW_ERROR;
812 return keywordValueLen;
813 }
814 }
815
816
817 }else{
818
819 return _getStringOrCopyKey(U_ICUDATA_LANG, displayLocale,
820 _kTypes, keyword,
821 keywordValue,
822 keywordValue,
823 dest, destCapacity,
824 status);
825 }
826 }
827