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1 | // © 2016 and later: Unicode, Inc. and others. | |
2 | // License & terms of use: http://www.unicode.org/copyright.html | |
3 | /* | |
4 | ******************************************************************************* | |
5 | * | |
6 | * Copyright (C) 2013-2016, International Business Machines | |
7 | * Corporation and others. All Rights Reserved. | |
8 | * | |
9 | ******************************************************************************* | |
10 | * file name: listformatter.cpp | |
11 | * encoding: UTF-8 | |
12 | * tab size: 8 (not used) | |
13 | * indentation:4 | |
14 | * | |
15 | * created on: 2012aug27 | |
16 | * created by: Umesh P. Nair | |
17 | */ | |
18 | ||
19 | #include "unicode/listformatter.h" | |
20 | #include "unicode/simpleformatter.h" | |
21 | #include "mutex.h" | |
22 | #include "hash.h" | |
23 | #include "cstring.h" | |
24 | #include "ulocimp.h" | |
25 | #include "charstr.h" | |
26 | #include "ucln_cmn.h" | |
27 | #include "uresimp.h" | |
28 | #include "resource.h" | |
29 | ||
30 | U_NAMESPACE_BEGIN | |
31 | ||
32 | struct ListFormatInternal : public UMemory { | |
33 | SimpleFormatter twoPattern; | |
34 | SimpleFormatter startPattern; | |
35 | SimpleFormatter middlePattern; | |
36 | SimpleFormatter endPattern; | |
37 | ||
38 | ListFormatInternal( | |
39 | const UnicodeString& two, | |
40 | const UnicodeString& start, | |
41 | const UnicodeString& middle, | |
42 | const UnicodeString& end, | |
43 | UErrorCode &errorCode) : | |
44 | twoPattern(two, 2, 2, errorCode), | |
45 | startPattern(start, 2, 2, errorCode), | |
46 | middlePattern(middle, 2, 2, errorCode), | |
47 | endPattern(end, 2, 2, errorCode) {} | |
48 | ||
49 | ListFormatInternal(const ListFormatData &data, UErrorCode &errorCode) : | |
50 | twoPattern(data.twoPattern, errorCode), | |
51 | startPattern(data.startPattern, errorCode), | |
52 | middlePattern(data.middlePattern, errorCode), | |
53 | endPattern(data.endPattern, errorCode) { } | |
54 | ||
55 | ListFormatInternal(const ListFormatInternal &other) : | |
56 | twoPattern(other.twoPattern), | |
57 | startPattern(other.startPattern), | |
58 | middlePattern(other.middlePattern), | |
59 | endPattern(other.endPattern) { } | |
60 | }; | |
61 | ||
62 | ||
63 | ||
64 | static Hashtable* listPatternHash = NULL; | |
65 | static UMutex listFormatterMutex = U_MUTEX_INITIALIZER; | |
66 | static const char STANDARD_STYLE[] = "standard"; | |
67 | ||
68 | U_CDECL_BEGIN | |
69 | static UBool U_CALLCONV uprv_listformatter_cleanup() { | |
70 | delete listPatternHash; | |
71 | listPatternHash = NULL; | |
72 | return TRUE; | |
73 | } | |
74 | ||
75 | static void U_CALLCONV | |
76 | uprv_deleteListFormatInternal(void *obj) { | |
77 | delete static_cast<ListFormatInternal *>(obj); | |
78 | } | |
79 | ||
80 | U_CDECL_END | |
81 | ||
82 | ListFormatter::ListFormatter(const ListFormatter& other) : | |
83 | owned(other.owned), data(other.data) { | |
84 | if (other.owned != NULL) { | |
85 | owned = new ListFormatInternal(*other.owned); | |
86 | data = owned; | |
87 | } | |
88 | } | |
89 | ||
90 | ListFormatter& ListFormatter::operator=(const ListFormatter& other) { | |
91 | if (this == &other) { | |
92 | return *this; | |
93 | } | |
94 | delete owned; | |
95 | if (other.owned) { | |
96 | owned = new ListFormatInternal(*other.owned); | |
97 | data = owned; | |
98 | } else { | |
99 | owned = NULL; | |
100 | data = other.data; | |
101 | } | |
102 | return *this; | |
103 | } | |
104 | ||
105 | void ListFormatter::initializeHash(UErrorCode& errorCode) { | |
106 | if (U_FAILURE(errorCode)) { | |
107 | return; | |
108 | } | |
109 | ||
110 | listPatternHash = new Hashtable(); | |
111 | if (listPatternHash == NULL) { | |
112 | errorCode = U_MEMORY_ALLOCATION_ERROR; | |
113 | return; | |
114 | } | |
115 | ||
116 | listPatternHash->setValueDeleter(uprv_deleteListFormatInternal); | |
117 | ucln_common_registerCleanup(UCLN_COMMON_LIST_FORMATTER, uprv_listformatter_cleanup); | |
118 | ||
119 | } | |
120 | ||
121 | const ListFormatInternal* ListFormatter::getListFormatInternal( | |
122 | const Locale& locale, const char *style, UErrorCode& errorCode) { | |
123 | if (U_FAILURE(errorCode)) { | |
124 | return NULL; | |
125 | } | |
126 | CharString keyBuffer(locale.getName(), errorCode); | |
127 | keyBuffer.append(':', errorCode).append(style, errorCode); | |
128 | UnicodeString key(keyBuffer.data(), -1, US_INV); | |
129 | ListFormatInternal* result = NULL; | |
130 | { | |
131 | Mutex m(&listFormatterMutex); | |
132 | if (listPatternHash == NULL) { | |
133 | initializeHash(errorCode); | |
134 | if (U_FAILURE(errorCode)) { | |
135 | return NULL; | |
136 | } | |
137 | } | |
138 | result = static_cast<ListFormatInternal*>(listPatternHash->get(key)); | |
139 | } | |
140 | if (result != NULL) { | |
141 | return result; | |
142 | } | |
143 | result = loadListFormatInternal(locale, style, errorCode); | |
144 | if (U_FAILURE(errorCode)) { | |
145 | return NULL; | |
146 | } | |
147 | ||
148 | { | |
149 | Mutex m(&listFormatterMutex); | |
150 | ListFormatInternal* temp = static_cast<ListFormatInternal*>(listPatternHash->get(key)); | |
151 | if (temp != NULL) { | |
152 | delete result; | |
153 | result = temp; | |
154 | } else { | |
155 | listPatternHash->put(key, result, errorCode); | |
156 | if (U_FAILURE(errorCode)) { | |
157 | return NULL; | |
158 | } | |
159 | } | |
160 | } | |
161 | return result; | |
162 | } | |
163 | ||
164 | static const UChar solidus = 0x2F; | |
165 | static const UChar aliasPrefix[] = { 0x6C,0x69,0x73,0x74,0x50,0x61,0x74,0x74,0x65,0x72,0x6E,0x2F }; // "listPattern/" | |
166 | enum { | |
167 | kAliasPrefixLen = UPRV_LENGTHOF(aliasPrefix), | |
168 | kStyleLenMax = 24 // longest currently is 14 | |
169 | }; | |
170 | ||
171 | struct ListFormatter::ListPatternsSink : public ResourceSink { | |
172 | UnicodeString two, start, middle, end; | |
173 | #if ((U_PLATFORM == U_PF_AIX) || (U_PLATFORM == U_PF_OS390)) && (U_CPLUSPLUS_VERSION < 11) | |
174 | char aliasedStyle[kStyleLenMax+1]; | |
175 | ListPatternsSink() { | |
176 | uprv_memset(aliasedStyle, 0, kStyleLenMax+1); | |
177 | } | |
178 | #else | |
179 | char aliasedStyle[kStyleLenMax+1] = {0}; | |
180 | ||
181 | ListPatternsSink() {} | |
182 | #endif | |
183 | virtual ~ListPatternsSink(); | |
184 | ||
185 | void setAliasedStyle(UnicodeString alias) { | |
186 | int32_t startIndex = alias.indexOf(aliasPrefix, kAliasPrefixLen, 0); | |
187 | if (startIndex < 0) { | |
188 | return; | |
189 | } | |
190 | startIndex += kAliasPrefixLen; | |
191 | int32_t endIndex = alias.indexOf(solidus, startIndex); | |
192 | if (endIndex < 0) { | |
193 | endIndex = alias.length(); | |
194 | } | |
195 | alias.extract(startIndex, endIndex-startIndex, aliasedStyle, kStyleLenMax+1, US_INV); | |
196 | aliasedStyle[kStyleLenMax] = 0; | |
197 | } | |
198 | ||
199 | void handleValueForPattern(ResourceValue &value, UnicodeString &pattern, UErrorCode &errorCode) { | |
200 | if (pattern.isEmpty()) { | |
201 | if (value.getType() == URES_ALIAS) { | |
202 | if (aliasedStyle[0] == 0) { | |
203 | setAliasedStyle(value.getAliasUnicodeString(errorCode)); | |
204 | } | |
205 | } else { | |
206 | pattern = value.getUnicodeString(errorCode); | |
207 | } | |
208 | } | |
209 | } | |
210 | ||
211 | virtual void put(const char *key, ResourceValue &value, UBool /*noFallback*/, | |
212 | UErrorCode &errorCode) { | |
213 | aliasedStyle[0] = 0; | |
214 | if (value.getType() == URES_ALIAS) { | |
215 | setAliasedStyle(value.getAliasUnicodeString(errorCode)); | |
216 | return; | |
217 | } | |
218 | ResourceTable listPatterns = value.getTable(errorCode); | |
219 | for (int i = 0; U_SUCCESS(errorCode) && listPatterns.getKeyAndValue(i, key, value); ++i) { | |
220 | if (uprv_strcmp(key, "2") == 0) { | |
221 | handleValueForPattern(value, two, errorCode); | |
222 | } else if (uprv_strcmp(key, "end") == 0) { | |
223 | handleValueForPattern(value, end, errorCode); | |
224 | } else if (uprv_strcmp(key, "middle") == 0) { | |
225 | handleValueForPattern(value, middle, errorCode); | |
226 | } else if (uprv_strcmp(key, "start") == 0) { | |
227 | handleValueForPattern(value, start, errorCode); | |
228 | } | |
229 | } | |
230 | } | |
231 | }; | |
232 | ||
233 | // Virtual destructors must be defined out of line. | |
234 | ListFormatter::ListPatternsSink::~ListPatternsSink() {} | |
235 | ||
236 | ListFormatInternal* ListFormatter::loadListFormatInternal( | |
237 | const Locale& locale, const char * style, UErrorCode& errorCode) { | |
238 | UResourceBundle* rb = ures_open(NULL, locale.getName(), &errorCode); | |
239 | rb = ures_getByKeyWithFallback(rb, "listPattern", rb, &errorCode); | |
240 | if (U_FAILURE(errorCode)) { | |
241 | ures_close(rb); | |
242 | return NULL; | |
243 | } | |
244 | ListFormatter::ListPatternsSink sink; | |
245 | char currentStyle[kStyleLenMax+1]; | |
246 | uprv_strncpy(currentStyle, style, kStyleLenMax); | |
247 | currentStyle[kStyleLenMax] = 0; | |
248 | ||
249 | for (;;) { | |
250 | ures_getAllItemsWithFallback(rb, currentStyle, sink, errorCode); | |
251 | if (U_FAILURE(errorCode) || sink.aliasedStyle[0] == 0 || uprv_strcmp(currentStyle, sink.aliasedStyle) == 0) { | |
252 | break; | |
253 | } | |
254 | uprv_strcpy(currentStyle, sink.aliasedStyle); | |
255 | } | |
256 | ures_close(rb); | |
257 | if (U_FAILURE(errorCode)) { | |
258 | return NULL; | |
259 | } | |
260 | if (sink.two.isEmpty() || sink.start.isEmpty() || sink.middle.isEmpty() || sink.end.isEmpty()) { | |
261 | errorCode = U_MISSING_RESOURCE_ERROR; | |
262 | return NULL; | |
263 | } | |
264 | ListFormatInternal* result = new ListFormatInternal(sink.two, sink.start, sink.middle, sink.end, errorCode); | |
265 | if (result == NULL) { | |
266 | errorCode = U_MEMORY_ALLOCATION_ERROR; | |
267 | return NULL; | |
268 | } | |
269 | if (U_FAILURE(errorCode)) { | |
270 | delete result; | |
271 | return NULL; | |
272 | } | |
273 | return result; | |
274 | } | |
275 | ||
276 | ListFormatter* ListFormatter::createInstance(UErrorCode& errorCode) { | |
277 | Locale locale; // The default locale. | |
278 | return createInstance(locale, errorCode); | |
279 | } | |
280 | ||
281 | ListFormatter* ListFormatter::createInstance(const Locale& locale, UErrorCode& errorCode) { | |
282 | return createInstance(locale, STANDARD_STYLE, errorCode); | |
283 | } | |
284 | ||
285 | ListFormatter* ListFormatter::createInstance(const Locale& locale, const char *style, UErrorCode& errorCode) { | |
286 | Locale tempLocale = locale; | |
287 | const ListFormatInternal* listFormatInternal = getListFormatInternal(tempLocale, style, errorCode); | |
288 | if (U_FAILURE(errorCode)) { | |
289 | return NULL; | |
290 | } | |
291 | ListFormatter* p = new ListFormatter(listFormatInternal); | |
292 | if (p == NULL) { | |
293 | errorCode = U_MEMORY_ALLOCATION_ERROR; | |
294 | return NULL; | |
295 | } | |
296 | return p; | |
297 | } | |
298 | ||
299 | ListFormatter::ListFormatter(const ListFormatData& listFormatData, UErrorCode &errorCode) { | |
300 | owned = new ListFormatInternal(listFormatData, errorCode); | |
301 | data = owned; | |
302 | } | |
303 | ||
304 | ListFormatter::ListFormatter(const ListFormatInternal* listFormatterInternal) : owned(NULL), data(listFormatterInternal) { | |
305 | } | |
306 | ||
307 | ListFormatter::~ListFormatter() { | |
308 | delete owned; | |
309 | } | |
310 | ||
311 | /** | |
312 | * Joins first and second using the pattern pat. | |
313 | * On entry offset is an offset into first or -1 if offset unspecified. | |
314 | * On exit offset is offset of second in result if recordOffset was set | |
315 | * Otherwise if it was >=0 it is set to point into result where it used | |
316 | * to point into first. On exit, result is the join of first and second | |
317 | * according to pat. Any previous value of result gets replaced. | |
318 | */ | |
319 | static void joinStringsAndReplace( | |
320 | const SimpleFormatter& pat, | |
321 | const UnicodeString& first, | |
322 | const UnicodeString& second, | |
323 | UnicodeString &result, | |
324 | UBool recordOffset, | |
325 | int32_t &offset, | |
326 | UErrorCode& errorCode) { | |
327 | if (U_FAILURE(errorCode)) { | |
328 | return; | |
329 | } | |
330 | const UnicodeString *params[2] = {&first, &second}; | |
331 | int32_t offsets[2]; | |
332 | pat.formatAndReplace( | |
333 | params, | |
334 | UPRV_LENGTHOF(params), | |
335 | result, | |
336 | offsets, | |
337 | UPRV_LENGTHOF(offsets), | |
338 | errorCode); | |
339 | if (U_FAILURE(errorCode)) { | |
340 | return; | |
341 | } | |
342 | if (offsets[0] == -1 || offsets[1] == -1) { | |
343 | errorCode = U_INVALID_FORMAT_ERROR; | |
344 | return; | |
345 | } | |
346 | if (recordOffset) { | |
347 | offset = offsets[1]; | |
348 | } else if (offset >= 0) { | |
349 | offset += offsets[0]; | |
350 | } | |
351 | } | |
352 | ||
353 | UnicodeString& ListFormatter::format( | |
354 | const UnicodeString items[], | |
355 | int32_t nItems, | |
356 | UnicodeString& appendTo, | |
357 | UErrorCode& errorCode) const { | |
358 | int32_t offset; | |
359 | return format(items, nItems, appendTo, -1, offset, errorCode); | |
360 | } | |
361 | ||
362 | UnicodeString& ListFormatter::format( | |
363 | const UnicodeString items[], | |
364 | int32_t nItems, | |
365 | UnicodeString& appendTo, | |
366 | int32_t index, | |
367 | int32_t &offset, | |
368 | UErrorCode& errorCode) const { | |
369 | offset = -1; | |
370 | if (U_FAILURE(errorCode)) { | |
371 | return appendTo; | |
372 | } | |
373 | if (data == NULL) { | |
374 | errorCode = U_INVALID_STATE_ERROR; | |
375 | return appendTo; | |
376 | } | |
377 | ||
378 | if (nItems <= 0) { | |
379 | return appendTo; | |
380 | } | |
381 | if (nItems == 1) { | |
382 | if (index == 0) { | |
383 | offset = appendTo.length(); | |
384 | } | |
385 | appendTo.append(items[0]); | |
386 | return appendTo; | |
387 | } | |
388 | UnicodeString result(items[0]); | |
389 | if (index == 0) { | |
390 | offset = 0; | |
391 | } | |
392 | joinStringsAndReplace( | |
393 | nItems == 2 ? data->twoPattern : data->startPattern, | |
394 | result, | |
395 | items[1], | |
396 | result, | |
397 | index == 1, | |
398 | offset, | |
399 | errorCode); | |
400 | if (nItems > 2) { | |
401 | for (int32_t i = 2; i < nItems - 1; ++i) { | |
402 | joinStringsAndReplace( | |
403 | data->middlePattern, | |
404 | result, | |
405 | items[i], | |
406 | result, | |
407 | index == i, | |
408 | offset, | |
409 | errorCode); | |
410 | } | |
411 | joinStringsAndReplace( | |
412 | data->endPattern, | |
413 | result, | |
414 | items[nItems - 1], | |
415 | result, | |
416 | index == nItems - 1, | |
417 | offset, | |
418 | errorCode); | |
419 | } | |
420 | if (U_SUCCESS(errorCode)) { | |
421 | if (offset >= 0) { | |
422 | offset += appendTo.length(); | |
423 | } | |
424 | appendTo += result; | |
425 | } | |
426 | return appendTo; | |
427 | } | |
428 | ||
429 | U_NAMESPACE_END |