1 /*
2 **********************************************************************
3 * Copyright (C) 2000-2015, International Business Machines
4 * Corporation and others. All Rights Reserved.
5 **********************************************************************
6 * file name: ucnvlat1.cpp
7 * encoding: US-ASCII
8 * tab size: 8 (not used)
9 * indentation:4
10 *
11 * created on: 2000feb07
12 * created by: Markus W. Scherer
13 */
14
15 #include "unicode/utypes.h"
16
17 #if !UCONFIG_NO_CONVERSION
18
19 #include "unicode/ucnv.h"
20 #include "unicode/uset.h"
21 #include "unicode/utf8.h"
22 #include "ucnv_bld.h"
23 #include "ucnv_cnv.h"
24
25 /* control optimizations according to the platform */
26 #define LATIN1_UNROLL_FROM_UNICODE 1
27
28 /* ISO 8859-1 --------------------------------------------------------------- */
29
30 /* This is a table-less and callback-less version of ucnv_MBCSSingleToBMPWithOffsets(). */
31 static void
_Latin1ToUnicodeWithOffsets(UConverterToUnicodeArgs * pArgs,UErrorCode * pErrorCode)32 _Latin1ToUnicodeWithOffsets(UConverterToUnicodeArgs *pArgs,
33 UErrorCode *pErrorCode) {
34 const uint8_t *source;
35 UChar *target;
36 int32_t targetCapacity, length;
37 int32_t *offsets;
38
39 int32_t sourceIndex;
40
41 /* set up the local pointers */
42 source=(const uint8_t *)pArgs->source;
43 target=pArgs->target;
44 targetCapacity=(int32_t)(pArgs->targetLimit-pArgs->target);
45 offsets=pArgs->offsets;
46
47 sourceIndex=0;
48
49 /*
50 * since the conversion here is 1:1 UChar:uint8_t, we need only one counter
51 * for the minimum of the sourceLength and targetCapacity
52 */
53 length=(int32_t)((const uint8_t *)pArgs->sourceLimit-source);
54 if(length<=targetCapacity) {
55 targetCapacity=length;
56 } else {
57 /* target will be full */
58 *pErrorCode=U_BUFFER_OVERFLOW_ERROR;
59 length=targetCapacity;
60 }
61
62 if(targetCapacity>=8) {
63 /* This loop is unrolled for speed and improved pipelining. */
64 int32_t count, loops;
65
66 loops=count=targetCapacity>>3;
67 length=targetCapacity&=0x7;
68 do {
69 target[0]=source[0];
70 target[1]=source[1];
71 target[2]=source[2];
72 target[3]=source[3];
73 target[4]=source[4];
74 target[5]=source[5];
75 target[6]=source[6];
76 target[7]=source[7];
77 target+=8;
78 source+=8;
79 } while(--count>0);
80
81 if(offsets!=NULL) {
82 do {
83 offsets[0]=sourceIndex++;
84 offsets[1]=sourceIndex++;
85 offsets[2]=sourceIndex++;
86 offsets[3]=sourceIndex++;
87 offsets[4]=sourceIndex++;
88 offsets[5]=sourceIndex++;
89 offsets[6]=sourceIndex++;
90 offsets[7]=sourceIndex++;
91 offsets+=8;
92 } while(--loops>0);
93 }
94 }
95
96 /* conversion loop */
97 while(targetCapacity>0) {
98 *target++=*source++;
99 --targetCapacity;
100 }
101
102 /* write back the updated pointers */
103 pArgs->source=(const char *)source;
104 pArgs->target=target;
105
106 /* set offsets */
107 if(offsets!=NULL) {
108 while(length>0) {
109 *offsets++=sourceIndex++;
110 --length;
111 }
112 pArgs->offsets=offsets;
113 }
114 }
115
116 /* This is a table-less and callback-less version of ucnv_MBCSSingleGetNextUChar(). */
117 static UChar32
_Latin1GetNextUChar(UConverterToUnicodeArgs * pArgs,UErrorCode * pErrorCode)118 _Latin1GetNextUChar(UConverterToUnicodeArgs *pArgs,
119 UErrorCode *pErrorCode) {
120 const uint8_t *source=(const uint8_t *)pArgs->source;
121 if(source<(const uint8_t *)pArgs->sourceLimit) {
122 pArgs->source=(const char *)(source+1);
123 return *source;
124 }
125
126 /* no output because of empty input */
127 *pErrorCode=U_INDEX_OUTOFBOUNDS_ERROR;
128 return 0xffff;
129 }
130
131 /* This is a table-less version of ucnv_MBCSSingleFromBMPWithOffsets(). */
132 static void
_Latin1FromUnicodeWithOffsets(UConverterFromUnicodeArgs * pArgs,UErrorCode * pErrorCode)133 _Latin1FromUnicodeWithOffsets(UConverterFromUnicodeArgs *pArgs,
134 UErrorCode *pErrorCode) {
135 UConverter *cnv;
136 const UChar *source, *sourceLimit;
137 uint8_t *target, *oldTarget;
138 int32_t targetCapacity, length;
139 int32_t *offsets;
140
141 UChar32 cp;
142 UChar c, max;
143
144 int32_t sourceIndex;
145
146 /* set up the local pointers */
147 cnv=pArgs->converter;
148 source=pArgs->source;
149 sourceLimit=pArgs->sourceLimit;
150 target=oldTarget=(uint8_t *)pArgs->target;
151 targetCapacity=(int32_t)(pArgs->targetLimit-pArgs->target);
152 offsets=pArgs->offsets;
153
154 if(cnv->sharedData==&_Latin1Data) {
155 max=0xff; /* Latin-1 */
156 } else {
157 max=0x7f; /* US-ASCII */
158 }
159
160 /* get the converter state from UConverter */
161 cp=cnv->fromUChar32;
162
163 /* sourceIndex=-1 if the current character began in the previous buffer */
164 sourceIndex= cp==0 ? 0 : -1;
165
166 /*
167 * since the conversion here is 1:1 UChar:uint8_t, we need only one counter
168 * for the minimum of the sourceLength and targetCapacity
169 */
170 length=(int32_t)(sourceLimit-source);
171 if(length<targetCapacity) {
172 targetCapacity=length;
173 }
174
175 /* conversion loop */
176 if(cp!=0 && targetCapacity>0) {
177 goto getTrail;
178 }
179
180 #if LATIN1_UNROLL_FROM_UNICODE
181 /* unroll the loop with the most common case */
182 if(targetCapacity>=16) {
183 int32_t count, loops;
184 UChar u, oredChars;
185
186 loops=count=targetCapacity>>4;
187 do {
188 oredChars=u=*source++;
189 *target++=(uint8_t)u;
190 oredChars|=u=*source++;
191 *target++=(uint8_t)u;
192 oredChars|=u=*source++;
193 *target++=(uint8_t)u;
194 oredChars|=u=*source++;
195 *target++=(uint8_t)u;
196 oredChars|=u=*source++;
197 *target++=(uint8_t)u;
198 oredChars|=u=*source++;
199 *target++=(uint8_t)u;
200 oredChars|=u=*source++;
201 *target++=(uint8_t)u;
202 oredChars|=u=*source++;
203 *target++=(uint8_t)u;
204 oredChars|=u=*source++;
205 *target++=(uint8_t)u;
206 oredChars|=u=*source++;
207 *target++=(uint8_t)u;
208 oredChars|=u=*source++;
209 *target++=(uint8_t)u;
210 oredChars|=u=*source++;
211 *target++=(uint8_t)u;
212 oredChars|=u=*source++;
213 *target++=(uint8_t)u;
214 oredChars|=u=*source++;
215 *target++=(uint8_t)u;
216 oredChars|=u=*source++;
217 *target++=(uint8_t)u;
218 oredChars|=u=*source++;
219 *target++=(uint8_t)u;
220
221 /* were all 16 entries really valid? */
222 if(oredChars>max) {
223 /* no, return to the first of these 16 */
224 source-=16;
225 target-=16;
226 break;
227 }
228 } while(--count>0);
229 count=loops-count;
230 targetCapacity-=16*count;
231
232 if(offsets!=NULL) {
233 oldTarget+=16*count;
234 while(count>0) {
235 *offsets++=sourceIndex++;
236 *offsets++=sourceIndex++;
237 *offsets++=sourceIndex++;
238 *offsets++=sourceIndex++;
239 *offsets++=sourceIndex++;
240 *offsets++=sourceIndex++;
241 *offsets++=sourceIndex++;
242 *offsets++=sourceIndex++;
243 *offsets++=sourceIndex++;
244 *offsets++=sourceIndex++;
245 *offsets++=sourceIndex++;
246 *offsets++=sourceIndex++;
247 *offsets++=sourceIndex++;
248 *offsets++=sourceIndex++;
249 *offsets++=sourceIndex++;
250 *offsets++=sourceIndex++;
251 --count;
252 }
253 }
254 }
255 #endif
256
257 /* conversion loop */
258 c=0;
259 while(targetCapacity>0 && (c=*source++)<=max) {
260 /* convert the Unicode code point */
261 *target++=(uint8_t)c;
262 --targetCapacity;
263 }
264
265 if(c>max) {
266 cp=c;
267 if(!U_IS_SURROGATE(cp)) {
268 /* callback(unassigned) */
269 } else if(U_IS_SURROGATE_LEAD(cp)) {
270 getTrail:
271 if(source<sourceLimit) {
272 /* test the following code unit */
273 UChar trail=*source;
274 if(U16_IS_TRAIL(trail)) {
275 ++source;
276 cp=U16_GET_SUPPLEMENTARY(cp, trail);
277 /* this codepage does not map supplementary code points */
278 /* callback(unassigned) */
279 } else {
280 /* this is an unmatched lead code unit (1st surrogate) */
281 /* callback(illegal) */
282 }
283 } else {
284 /* no more input */
285 cnv->fromUChar32=cp;
286 goto noMoreInput;
287 }
288 } else {
289 /* this is an unmatched trail code unit (2nd surrogate) */
290 /* callback(illegal) */
291 }
292
293 *pErrorCode= U_IS_SURROGATE(cp) ? U_ILLEGAL_CHAR_FOUND : U_INVALID_CHAR_FOUND;
294 cnv->fromUChar32=cp;
295 }
296 noMoreInput:
297
298 /* set offsets since the start */
299 if(offsets!=NULL) {
300 size_t count=target-oldTarget;
301 while(count>0) {
302 *offsets++=sourceIndex++;
303 --count;
304 }
305 }
306
307 if(U_SUCCESS(*pErrorCode) && source<sourceLimit && target>=(uint8_t *)pArgs->targetLimit) {
308 /* target is full */
309 *pErrorCode=U_BUFFER_OVERFLOW_ERROR;
310 }
311
312 /* write back the updated pointers */
313 pArgs->source=source;
314 pArgs->target=(char *)target;
315 pArgs->offsets=offsets;
316 }
317
318 /* Convert UTF-8 to Latin-1. Adapted from ucnv_SBCSFromUTF8(). */
319 static void
ucnv_Latin1FromUTF8(UConverterFromUnicodeArgs * pFromUArgs,UConverterToUnicodeArgs * pToUArgs,UErrorCode * pErrorCode)320 ucnv_Latin1FromUTF8(UConverterFromUnicodeArgs *pFromUArgs,
321 UConverterToUnicodeArgs *pToUArgs,
322 UErrorCode *pErrorCode) {
323 UConverter *utf8;
324 const uint8_t *source, *sourceLimit;
325 uint8_t *target;
326 int32_t targetCapacity;
327
328 UChar32 c;
329 uint8_t b, t1;
330
331 /* set up the local pointers */
332 utf8=pToUArgs->converter;
333 source=(uint8_t *)pToUArgs->source;
334 sourceLimit=(uint8_t *)pToUArgs->sourceLimit;
335 target=(uint8_t *)pFromUArgs->target;
336 targetCapacity=(int32_t)(pFromUArgs->targetLimit-pFromUArgs->target);
337
338 /* get the converter state from the UTF-8 UConverter */
339 c=(UChar32)utf8->toUnicodeStatus;
340 if(c!=0 && source<sourceLimit) {
341 if(targetCapacity==0) {
342 *pErrorCode=U_BUFFER_OVERFLOW_ERROR;
343 return;
344 } else if(c>=0xc2 && c<=0xc3 && (t1=(uint8_t)(*source-0x80)) <= 0x3f) {
345 ++source;
346 *target++=(uint8_t)(((c&3)<<6)|t1);
347 --targetCapacity;
348
349 utf8->toUnicodeStatus=0;
350 utf8->toULength=0;
351 } else {
352 /* complicated, illegal or unmappable input: fall back to the pivoting implementation */
353 *pErrorCode=U_USING_DEFAULT_WARNING;
354 return;
355 }
356 }
357
358 /*
359 * Make sure that the last byte sequence before sourceLimit is complete
360 * or runs into a lead byte.
361 * In the conversion loop compare source with sourceLimit only once
362 * per multi-byte character.
363 * For Latin-1, adjust sourceLimit only for 1 trail byte because
364 * the conversion loop handles at most 2-byte sequences.
365 */
366 if(source<sourceLimit && U8_IS_LEAD(*(sourceLimit-1))) {
367 --sourceLimit;
368 }
369
370 /* conversion loop */
371 while(source<sourceLimit) {
372 if(targetCapacity>0) {
373 b=*source++;
374 if((int8_t)b>=0) {
375 /* convert ASCII */
376 *target++=(uint8_t)b;
377 --targetCapacity;
378 } else if( /* handle U+0080..U+00FF inline */
379 b>=0xc2 && b<=0xc3 &&
380 (t1=(uint8_t)(*source-0x80)) <= 0x3f
381 ) {
382 ++source;
383 *target++=(uint8_t)(((b&3)<<6)|t1);
384 --targetCapacity;
385 } else {
386 /* complicated, illegal or unmappable input: fall back to the pivoting implementation */
387 pToUArgs->source=(char *)(source-1);
388 pFromUArgs->target=(char *)target;
389 *pErrorCode=U_USING_DEFAULT_WARNING;
390 return;
391 }
392 } else {
393 /* target is full */
394 *pErrorCode=U_BUFFER_OVERFLOW_ERROR;
395 break;
396 }
397 }
398
399 /*
400 * The sourceLimit may have been adjusted before the conversion loop
401 * to stop before a truncated sequence.
402 * If so, then collect the truncated sequence now.
403 * For Latin-1, there is at most exactly one lead byte because of the
404 * smaller sourceLimit adjustment logic.
405 */
406 if(U_SUCCESS(*pErrorCode) && source<(sourceLimit=(uint8_t *)pToUArgs->sourceLimit)) {
407 utf8->toUnicodeStatus=utf8->toUBytes[0]=b=*source++;
408 utf8->toULength=1;
409 utf8->mode=U8_COUNT_TRAIL_BYTES(b)+1;
410 }
411
412 /* write back the updated pointers */
413 pToUArgs->source=(char *)source;
414 pFromUArgs->target=(char *)target;
415 }
416
417 static void
_Latin1GetUnicodeSet(const UConverter * cnv,const USetAdder * sa,UConverterUnicodeSet which,UErrorCode * pErrorCode)418 _Latin1GetUnicodeSet(const UConverter *cnv,
419 const USetAdder *sa,
420 UConverterUnicodeSet which,
421 UErrorCode *pErrorCode) {
422 sa->addRange(sa->set, 0, 0xff);
423 }
424
425 static const UConverterImpl _Latin1Impl={
426 UCNV_LATIN_1,
427
428 NULL,
429 NULL,
430
431 NULL,
432 NULL,
433 NULL,
434
435 _Latin1ToUnicodeWithOffsets,
436 _Latin1ToUnicodeWithOffsets,
437 _Latin1FromUnicodeWithOffsets,
438 _Latin1FromUnicodeWithOffsets,
439 _Latin1GetNextUChar,
440
441 NULL,
442 NULL,
443 NULL,
444 NULL,
445 _Latin1GetUnicodeSet,
446
447 NULL,
448 ucnv_Latin1FromUTF8
449 };
450
451 static const UConverterStaticData _Latin1StaticData={
452 sizeof(UConverterStaticData),
453 "ISO-8859-1",
454 819, UCNV_IBM, UCNV_LATIN_1, 1, 1,
455 { 0x1a, 0, 0, 0 }, 1, FALSE, FALSE,
456 0,
457 0,
458 { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } /* reserved */
459 };
460
461 const UConverterSharedData _Latin1Data=
462 UCNV_IMMUTABLE_SHARED_DATA_INITIALIZER(&_Latin1StaticData, &_Latin1Impl);
463
464 /* US-ASCII ----------------------------------------------------------------- */
465
466 /* This is a table-less version of ucnv_MBCSSingleToBMPWithOffsets(). */
467 static void
_ASCIIToUnicodeWithOffsets(UConverterToUnicodeArgs * pArgs,UErrorCode * pErrorCode)468 _ASCIIToUnicodeWithOffsets(UConverterToUnicodeArgs *pArgs,
469 UErrorCode *pErrorCode) {
470 const uint8_t *source, *sourceLimit;
471 UChar *target, *oldTarget;
472 int32_t targetCapacity, length;
473 int32_t *offsets;
474
475 int32_t sourceIndex;
476
477 uint8_t c;
478
479 /* set up the local pointers */
480 source=(const uint8_t *)pArgs->source;
481 sourceLimit=(const uint8_t *)pArgs->sourceLimit;
482 target=oldTarget=pArgs->target;
483 targetCapacity=(int32_t)(pArgs->targetLimit-pArgs->target);
484 offsets=pArgs->offsets;
485
486 /* sourceIndex=-1 if the current character began in the previous buffer */
487 sourceIndex=0;
488
489 /*
490 * since the conversion here is 1:1 UChar:uint8_t, we need only one counter
491 * for the minimum of the sourceLength and targetCapacity
492 */
493 length=(int32_t)(sourceLimit-source);
494 if(length<targetCapacity) {
495 targetCapacity=length;
496 }
497
498 if(targetCapacity>=8) {
499 /* This loop is unrolled for speed and improved pipelining. */
500 int32_t count, loops;
501 UChar oredChars;
502
503 loops=count=targetCapacity>>3;
504 do {
505 oredChars=target[0]=source[0];
506 oredChars|=target[1]=source[1];
507 oredChars|=target[2]=source[2];
508 oredChars|=target[3]=source[3];
509 oredChars|=target[4]=source[4];
510 oredChars|=target[5]=source[5];
511 oredChars|=target[6]=source[6];
512 oredChars|=target[7]=source[7];
513
514 /* were all 16 entries really valid? */
515 if(oredChars>0x7f) {
516 /* no, return to the first of these 16 */
517 break;
518 }
519 source+=8;
520 target+=8;
521 } while(--count>0);
522 count=loops-count;
523 targetCapacity-=count*8;
524
525 if(offsets!=NULL) {
526 oldTarget+=count*8;
527 while(count>0) {
528 offsets[0]=sourceIndex++;
529 offsets[1]=sourceIndex++;
530 offsets[2]=sourceIndex++;
531 offsets[3]=sourceIndex++;
532 offsets[4]=sourceIndex++;
533 offsets[5]=sourceIndex++;
534 offsets[6]=sourceIndex++;
535 offsets[7]=sourceIndex++;
536 offsets+=8;
537 --count;
538 }
539 }
540 }
541
542 /* conversion loop */
543 c=0;
544 while(targetCapacity>0 && (c=*source++)<=0x7f) {
545 *target++=c;
546 --targetCapacity;
547 }
548
549 if(c>0x7f) {
550 /* callback(illegal); copy the current bytes to toUBytes[] */
551 UConverter *cnv=pArgs->converter;
552 cnv->toUBytes[0]=c;
553 cnv->toULength=1;
554 *pErrorCode=U_ILLEGAL_CHAR_FOUND;
555 } else if(source<sourceLimit && target>=pArgs->targetLimit) {
556 /* target is full */
557 *pErrorCode=U_BUFFER_OVERFLOW_ERROR;
558 }
559
560 /* set offsets since the start */
561 if(offsets!=NULL) {
562 size_t count=target-oldTarget;
563 while(count>0) {
564 *offsets++=sourceIndex++;
565 --count;
566 }
567 }
568
569 /* write back the updated pointers */
570 pArgs->source=(const char *)source;
571 pArgs->target=target;
572 pArgs->offsets=offsets;
573 }
574
575 /* This is a table-less version of ucnv_MBCSSingleGetNextUChar(). */
576 static UChar32
_ASCIIGetNextUChar(UConverterToUnicodeArgs * pArgs,UErrorCode * pErrorCode)577 _ASCIIGetNextUChar(UConverterToUnicodeArgs *pArgs,
578 UErrorCode *pErrorCode) {
579 const uint8_t *source;
580 uint8_t b;
581
582 source=(const uint8_t *)pArgs->source;
583 if(source<(const uint8_t *)pArgs->sourceLimit) {
584 b=*source++;
585 pArgs->source=(const char *)source;
586 if(b<=0x7f) {
587 return b;
588 } else {
589 UConverter *cnv=pArgs->converter;
590 cnv->toUBytes[0]=b;
591 cnv->toULength=1;
592 *pErrorCode=U_ILLEGAL_CHAR_FOUND;
593 return 0xffff;
594 }
595 }
596
597 /* no output because of empty input */
598 *pErrorCode=U_INDEX_OUTOFBOUNDS_ERROR;
599 return 0xffff;
600 }
601
602 /* "Convert" UTF-8 to US-ASCII: Validate and copy. */
603 static void
ucnv_ASCIIFromUTF8(UConverterFromUnicodeArgs * pFromUArgs,UConverterToUnicodeArgs * pToUArgs,UErrorCode * pErrorCode)604 ucnv_ASCIIFromUTF8(UConverterFromUnicodeArgs *pFromUArgs,
605 UConverterToUnicodeArgs *pToUArgs,
606 UErrorCode *pErrorCode) {
607 const uint8_t *source, *sourceLimit;
608 uint8_t *target;
609 int32_t targetCapacity, length;
610
611 uint8_t c;
612
613 if(pToUArgs->converter->toUnicodeStatus!=0) {
614 /* no handling of partial UTF-8 characters here, fall back to pivoting */
615 *pErrorCode=U_USING_DEFAULT_WARNING;
616 return;
617 }
618
619 /* set up the local pointers */
620 source=(const uint8_t *)pToUArgs->source;
621 sourceLimit=(const uint8_t *)pToUArgs->sourceLimit;
622 target=(uint8_t *)pFromUArgs->target;
623 targetCapacity=(int32_t)(pFromUArgs->targetLimit-pFromUArgs->target);
624
625 /*
626 * since the conversion here is 1:1 uint8_t:uint8_t, we need only one counter
627 * for the minimum of the sourceLength and targetCapacity
628 */
629 length=(int32_t)(sourceLimit-source);
630 if(length<targetCapacity) {
631 targetCapacity=length;
632 }
633
634 /* unroll the loop with the most common case */
635 if(targetCapacity>=16) {
636 int32_t count, loops;
637 uint8_t oredChars;
638
639 loops=count=targetCapacity>>4;
640 do {
641 oredChars=*target++=*source++;
642 oredChars|=*target++=*source++;
643 oredChars|=*target++=*source++;
644 oredChars|=*target++=*source++;
645 oredChars|=*target++=*source++;
646 oredChars|=*target++=*source++;
647 oredChars|=*target++=*source++;
648 oredChars|=*target++=*source++;
649 oredChars|=*target++=*source++;
650 oredChars|=*target++=*source++;
651 oredChars|=*target++=*source++;
652 oredChars|=*target++=*source++;
653 oredChars|=*target++=*source++;
654 oredChars|=*target++=*source++;
655 oredChars|=*target++=*source++;
656 oredChars|=*target++=*source++;
657
658 /* were all 16 entries really valid? */
659 if(oredChars>0x7f) {
660 /* no, return to the first of these 16 */
661 source-=16;
662 target-=16;
663 break;
664 }
665 } while(--count>0);
666 count=loops-count;
667 targetCapacity-=16*count;
668 }
669
670 /* conversion loop */
671 c=0;
672 while(targetCapacity>0 && (c=*source)<=0x7f) {
673 ++source;
674 *target++=c;
675 --targetCapacity;
676 }
677
678 if(c>0x7f) {
679 /* non-ASCII character, handle in standard converter */
680 *pErrorCode=U_USING_DEFAULT_WARNING;
681 } else if(source<sourceLimit && target>=(const uint8_t *)pFromUArgs->targetLimit) {
682 /* target is full */
683 *pErrorCode=U_BUFFER_OVERFLOW_ERROR;
684 }
685
686 /* write back the updated pointers */
687 pToUArgs->source=(const char *)source;
688 pFromUArgs->target=(char *)target;
689 }
690
691 static void
_ASCIIGetUnicodeSet(const UConverter * cnv,const USetAdder * sa,UConverterUnicodeSet which,UErrorCode * pErrorCode)692 _ASCIIGetUnicodeSet(const UConverter *cnv,
693 const USetAdder *sa,
694 UConverterUnicodeSet which,
695 UErrorCode *pErrorCode) {
696 sa->addRange(sa->set, 0, 0x7f);
697 }
698
699 static const UConverterImpl _ASCIIImpl={
700 UCNV_US_ASCII,
701
702 NULL,
703 NULL,
704
705 NULL,
706 NULL,
707 NULL,
708
709 _ASCIIToUnicodeWithOffsets,
710 _ASCIIToUnicodeWithOffsets,
711 _Latin1FromUnicodeWithOffsets,
712 _Latin1FromUnicodeWithOffsets,
713 _ASCIIGetNextUChar,
714
715 NULL,
716 NULL,
717 NULL,
718 NULL,
719 _ASCIIGetUnicodeSet,
720
721 NULL,
722 ucnv_ASCIIFromUTF8
723 };
724
725 static const UConverterStaticData _ASCIIStaticData={
726 sizeof(UConverterStaticData),
727 "US-ASCII",
728 367, UCNV_IBM, UCNV_US_ASCII, 1, 1,
729 { 0x1a, 0, 0, 0 }, 1, FALSE, FALSE,
730 0,
731 0,
732 { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } /* reserved */
733 };
734
735 const UConverterSharedData _ASCIIData=
736 UCNV_IMMUTABLE_SHARED_DATA_INITIALIZER(&_ASCIIStaticData, &_ASCIIImpl);
737
738 #endif
739