1 /*****************************************************************************/
2 // Copyright 2006-2007 Adobe Systems Incorporated
3 // All Rights Reserved.
4 //
5 // NOTICE: Adobe permits you to use, modify, and distribute this file in
6 // accordance with the terms of the Adobe license agreement accompanying it.
7 /*****************************************************************************/
8
9 /* $Id: //mondo/dng_sdk_1_4/dng_sdk/source/dng_string.cpp#2 $ */
10 /* $DateTime: 2012/07/31 22:04:34 $ */
11 /* $Change: 840853 $ */
12 /* $Author: tknoll $ */
13
14 /*****************************************************************************/
15
16 #include "dng_string.h"
17
18 #include "dng_assertions.h"
19 #include "dng_exceptions.h"
20 #include "dng_flags.h"
21 #include "dng_mutex.h"
22 #include "dng_utils.h"
23 #include "dng_safe_arithmetic.h"
24
25 #if qMacOS
26 #include <TargetConditionals.h>
27 #if TARGET_OS_IPHONE || TARGET_IPHONE_SIMULATOR
28 #include <MobileCoreServices/MobileCoreServices.h>
29 #else
30 #include <CoreServices/CoreServices.h>
31 #endif // TARGET_OS_IPHONE || TARGET_IPHONE_SIMULATOR
32 #endif // qMacOS
33
34 #if qWinOS
35 #include <windows.h>
36 #endif
37
38 #if qiPhone || qAndroid || qLinux
39 #include <ctype.h> // for isdigit
40 #endif
41
42 /*****************************************************************************/
43
44 const uint32 kREPLACEMENT_CHARACTER = 0x0000FFFD;
45
46 /*****************************************************************************/
47
48 // Returns the length of the zero-terminated string 's'. Throws a dng_exception
49 // if the length of 's' is too large to be represented as a uint32_t.
strlenAsUint32(const char * s)50 static uint32 strlenAsUint32(const char *s)
51 {
52
53 uint32 lengthAsUint32 = 0;
54 ConvertUnsigned(strlen(s), &lengthAsUint32);
55
56 return lengthAsUint32;
57
58 }
59
60 // Checks whether there is enough space left in the buffer pointed to by
61 // 'currentPos' to write at least 'space' elements of type T (to positions
62 // currentPos[0] through currentPos[space - 1]. Throws a dng_exception if there
63 // is not enough space left in the buffer.
64 // 'bufferEnd' should point one element beyond the end of the buffer. For
65 // example, if the buffer is "T buffer[3];", then bufferEnd should point to
66 // T + 3.
67 template <class T>
CheckSpaceLeftInBuffer(const T * currentPos,const T * bufferEnd,size_t space)68 static void CheckSpaceLeftInBuffer(const T *currentPos,
69 const T *bufferEnd,
70 size_t space)
71 {
72
73 if (bufferEnd < currentPos || static_cast<size_t>(bufferEnd - currentPos) < space)
74 {
75 ThrowMemoryFull ("Buffer overrun");
76 }
77
78 }
79
80 /*****************************************************************************/
81
82 // Throws an exception to notify the user of code that has not been security
83 // hardened and prevent execution of that code.
84 //
85 // Though the DNG SDK in general has been security-hardened, this does not apply
86 // to the following Mac-OS- and Windows-specific functions. Calls to
87 // ThrowNotHardened() have been added to these functions to alert callers of
88 // this fact.
89 //
90 // If you're trying to use a function that calls ThrowNotHardened(), you need to
91 // fix the security issues noted in the comment next to the ThrowNotHardened()
92 // call. Once you have fixed these issues, obtain a security review for the
93 // fixes. This may require fuzzing of the modified code on the target platform.
ThrowNotHardened()94 static void ThrowNotHardened()
95 {
96 ThrowProgramError ("This function has not been security-hardened");
97 }
98
99 #if qMacOS
100 #if TARGET_OS_IPHONE || TARGET_IPHONE_SIMULATOR
101
Extract_SystemEncoding(const dng_string & dngString,dng_memory_data & buffer)102 static uint32 Extract_SystemEncoding (const dng_string &dngString,
103 dng_memory_data &buffer)
104 {
105 // TODO: Needs implementation.
106 ThrowProgramError ("Extract_SystemEncoding() not implemented on iOS");
107 return 0;
108 }
109
Assign_SystemEncoding(dng_string & dngString,const char * otherString)110 static void Assign_SystemEncoding (dng_string &dngString,
111 const char *otherString)
112 {
113 // TODO: Needs implementation.
114 ThrowProgramError ("Assign_SystemEncoding() not implemented on iOS");
115
116 }
117
Assign_JIS_X208_1990(dng_string & dngString,const char * otherString)118 static void Assign_JIS_X208_1990 (dng_string &dngString,
119 const char *otherString)
120 {
121 // TODO: Needs implementation.
122 ThrowProgramError ("Assign_JIS_X208_1990() not implemented on iOS");
123 }
124
125 #else
126
Assign_Multibyte(dng_string & dngString,const char * otherString,TextEncoding encoding)127 static void Assign_Multibyte (dng_string &dngString,
128 const char *otherString,
129 TextEncoding encoding)
130 {
131
132 // This function contains security-vulnerable code. Do not use.
133 // The particular vulnerabilities are:
134 // - Casting the result of strlen() to a uint32 may case truncation. (Use
135 // strlenAsUint32() instead.)
136 // - The computation of aBufSize and the subsequent addition of 1 in the
137 // call to the dng_memory_data constructor may wrap around.
138 ThrowNotHardened();
139
140 uint32 aSize = (uint32) strlen (otherString);
141
142 if (aSize > 0)
143 {
144
145 uint32 aBufSize = aSize * 6 + 256;
146
147 dng_memory_data aBuf (aBufSize + 1);
148
149 UnicodeMapping aMapping;
150
151 aMapping.unicodeEncoding = ::CreateTextEncoding (kTextEncodingUnicodeV3_0,
152 kUnicodeNoSubset,
153 kUnicodeUTF8Format);
154
155 aMapping.otherEncoding = encoding;
156 aMapping.mappingVersion = kUnicodeUseLatestMapping;
157
158 TextToUnicodeInfo aInfo = NULL;
159
160 if (::CreateTextToUnicodeInfo (&aMapping, &aInfo) == noErr)
161 {
162
163 ByteCount aInput = 0;
164 ByteCount aOutput = 0;
165
166 ::ConvertFromTextToUnicode (aInfo,
167 aSize,
168 otherString,
169 kUnicodeUseFallbacksMask |
170 kUnicodeLooseMappingsMask,
171 0,
172 NULL,
173 NULL,
174 NULL,
175 aBufSize,
176 &aInput,
177 &aOutput,
178 (UniChar *) aBuf.Buffer ());
179
180 ::DisposeTextToUnicodeInfo (&aInfo);
181
182 if (aOutput > 0 && aOutput <= aBufSize)
183 {
184
185 char *aBufChar = aBuf.Buffer_char ();
186
187 aBufChar [aOutput] = 0;
188
189 dngString.Set (aBufChar);
190
191 return;
192
193 }
194
195 }
196
197 }
198
199 dngString.Clear ();
200
201 }
202
Extract_Multibyte(const dng_string & dngString,dng_memory_data & buffer,TextEncoding encoding)203 static uint32 Extract_Multibyte (const dng_string &dngString,
204 dng_memory_data &buffer,
205 TextEncoding encoding)
206 {
207
208 // This function contains security-vulnerable code. Do not use.
209 // The particular vulnerabilities are:
210 // - The computation of aBufSize may wrap around.
211 // - The computation of the argument to buffer.Allocate() may overflow; the
212 // conversion to uint32 is also problematic.
213 // - The signed-to-unsigned conversion in the return statement "
214 // return (uint32) aOutput;" may be problematic.
215 ThrowNotHardened();
216
217 uint32 aSize = dngString.Length ();
218
219 if (aSize > 0)
220 {
221
222 uint32 aBufSize = (aSize * 2) + 256;
223
224 dng_memory_data tempBuffer (aBufSize);
225
226 UnicodeMapping aMapping;
227
228 aMapping.unicodeEncoding = ::CreateTextEncoding (kTextEncodingUnicodeV3_0,
229 kUnicodeNoSubset,
230 kUnicodeUTF8Format);
231
232 aMapping.otherEncoding = encoding;
233 aMapping.mappingVersion = kUnicodeUseLatestMapping;
234
235 UnicodeToTextInfo aInfo = NULL;
236
237 if (::CreateUnicodeToTextInfo (&aMapping, &aInfo) == noErr)
238 {
239
240 ByteCount aInput = 0;
241 ByteCount aOutput = 0;
242
243 ::ConvertFromUnicodeToText (aInfo,
244 aSize,
245 (const UniChar *) dngString.Get (),
246 kUnicodeUseFallbacksMask |
247 kUnicodeLooseMappingsMask |
248 kUnicodeDefaultDirectionMask,
249 0,
250 NULL,
251 NULL,
252 NULL,
253 aBufSize,
254 &aInput,
255 &aOutput,
256 tempBuffer.Buffer_char ());
257
258 ::DisposeUnicodeToTextInfo (&aInfo);
259
260 if (aOutput > 0)
261 {
262
263 buffer.Allocate ((uint32) (aOutput + 1));
264
265 memcpy (buffer.Buffer (),
266 tempBuffer.Buffer (),
267 aOutput);
268
269 buffer.Buffer_char () [aOutput] = 0;
270
271 return (uint32) aOutput;
272
273 }
274
275 }
276
277 }
278
279 buffer.Allocate (1);
280
281 buffer.Buffer_char () [0] = 0;
282
283 return 0;
284
285 }
286
Assign_SystemEncoding(dng_string & dngString,const char * otherString)287 static void Assign_SystemEncoding (dng_string &dngString,
288 const char *otherString)
289 {
290
291 TextEncoding aEncoding;
292
293 ::UpgradeScriptInfoToTextEncoding (smSystemScript,
294 kTextLanguageDontCare,
295 kTextRegionDontCare,
296 NULL,
297 &aEncoding);
298
299 Assign_Multibyte (dngString,
300 otherString,
301 aEncoding);
302
303 }
304
Extract_SystemEncoding(const dng_string & dngString,dng_memory_data & buffer)305 static uint32 Extract_SystemEncoding (const dng_string &dngString,
306 dng_memory_data &buffer)
307 {
308
309 TextEncoding aEncoding;
310
311 ::UpgradeScriptInfoToTextEncoding (smSystemScript,
312 kTextLanguageDontCare,
313 kTextRegionDontCare,
314 NULL,
315 &aEncoding);
316
317 return Extract_Multibyte (dngString,
318 buffer,
319 aEncoding);
320
321 }
322
Assign_JIS_X208_1990(dng_string & dngString,const char * otherString)323 static void Assign_JIS_X208_1990 (dng_string &dngString,
324 const char *otherString)
325 {
326
327 Assign_Multibyte (dngString,
328 otherString,
329 kTextEncodingJIS_X0208_90);
330
331 }
332
333 #endif // TARGET_OS_IPHONE || TARGET_IPHONE_SIMULATOR
334 #endif // qMacOS
335
336 /*****************************************************************************/
337
338 #if qWinOS
339
Assign_Multibyte(dng_string & dngString,const char * otherString,UINT encoding)340 static void Assign_Multibyte (dng_string &dngString,
341 const char *otherString,
342 UINT encoding)
343 {
344
345 // This function contains security-vulnerable code. Do not use.
346 // The particular vulnerabilities are:
347 // - Converting the return value of strlen() to int may cause overflow.
348 // - The computation of aBufChars and of the argument to the dng_memory_data
349 // constructor may overflow. Additionally, there is an implicit
350 // signed-to-unsigned conversion in the call to the dng_memory_data
351 // constructor.
352 ThrowNotHardened();
353
354 DNG_ASSERT (sizeof (WCHAR) == 2, "WCHAR must be 2 bytes");
355
356 int aSize = (int) strlen (otherString);
357
358 if (aSize > 0)
359 {
360
361 int aBufChars = aSize * 3 + 128;
362
363 dng_memory_data aBuf ((aBufChars + 1) << 1);
364
365 int aResult = ::MultiByteToWideChar (encoding,
366 0,
367 otherString,
368 aSize,
369 (WCHAR *) aBuf.Buffer (),
370 aBufChars);
371
372 if (aResult > 0 && aResult <= aBufChars)
373 {
374
375 uint16 * aUTF16 = aBuf.Buffer_uint16 ();
376
377 aUTF16 [aResult] = 0;
378
379 dngString.Set_UTF16 (aUTF16);
380
381 return;
382
383 }
384
385 }
386
387 dngString.Clear ();
388
389 }
390
Extract_Multibyte(const dng_string & dngString,dng_memory_data & buffer,UINT encoding)391 static uint32 Extract_Multibyte (const dng_string &dngString,
392 dng_memory_data &buffer,
393 UINT encoding)
394 {
395
396 // This function contains security-vulnerable code. Do not use.
397 // The particular vulnerabilities are:
398 // - Converting the return value of dngString.Get_UTF16() may cause
399 // overflow.
400 // - The computation of dBufSize may overflow.
401 // - The calls to the dng_memory_data constructor and to buffer.Allocate()
402 // trigger implicit conversions of int to uint32 that may be problematic.
403 // - The memcpy() call triggers an implicit conversion of aResult to a
404 // size_t, which may be problematic.
405 // - The conversion of aResult to a uint32 in the return statement may be
406 // problematic.
407 ThrowNotHardened();
408
409 DNG_ASSERT (sizeof (WCHAR) == 2, "WCHAR must be 2 bytes");
410
411 dng_memory_data sBuffer;
412
413 int aCount = dngString.Get_UTF16 (sBuffer);
414
415 int dBufSize = aCount * 2 + 256;
416
417 dng_memory_data dBuffer (dBufSize);
418
419 int aResult = ::WideCharToMultiByte (encoding,
420 0,
421 (WCHAR *) sBuffer.Buffer (),
422 aCount,
423 dBuffer.Buffer_char (),
424 dBufSize,
425 NULL,
426 NULL);
427
428 if (aResult < 0)
429 aResult = 0;
430
431 buffer.Allocate (aResult + 1);
432
433 memcpy (buffer.Buffer (),
434 dBuffer.Buffer (),
435 aResult);
436
437 buffer.Buffer_char () [aResult] = 0;
438
439 return (uint32) aResult;
440
441 }
442
Assign_SystemEncoding(dng_string & dngString,const char * otherString)443 static void Assign_SystemEncoding (dng_string &dngString,
444 const char *otherString)
445 {
446
447 Assign_Multibyte (dngString,
448 otherString,
449 ::GetACP ());
450
451 }
452
Extract_SystemEncoding(const dng_string & dngString,dng_memory_data & buffer)453 static uint32 Extract_SystemEncoding (const dng_string &dngString,
454 dng_memory_data &buffer)
455 {
456
457 return Extract_Multibyte (dngString,
458 buffer,
459 ::GetACP ());
460
461 }
462
Assign_JIS_X208_1990(dng_string & dngString,const char * otherString)463 static void Assign_JIS_X208_1990 (dng_string &dngString,
464 const char *otherString)
465 {
466
467 // From MSDN documentation: 20932 = JIS X 0208-1990 & 0121-1990
468
469 const UINT kJIS = 20932;
470
471 Assign_Multibyte (dngString,
472 otherString,
473 kJIS);
474
475 }
476
477 #endif
478
479 /*****************************************************************************/
480
IsASCII(const char * s)481 static bool IsASCII (const char *s)
482 {
483
484 if (!s)
485 {
486
487 return true;
488
489 }
490
491 while (true)
492 {
493
494 uint8 c = (uint8) *(s++);
495
496 if (c == 0)
497 {
498
499 break;
500
501 }
502
503 if (c & 0x80)
504 {
505
506 return false;
507
508 }
509
510 }
511
512 return true;
513
514 }
515
516 /*****************************************************************************/
517
dng_string()518 dng_string::dng_string ()
519
520 : fData ()
521
522 {
523
524 }
525
526 /*****************************************************************************/
527
dng_string(const dng_string & s)528 dng_string::dng_string (const dng_string &s)
529
530 : fData ()
531
532 {
533
534 Set (s.Get ());
535
536 }
537
538 /*****************************************************************************/
539
operator =(const dng_string & s)540 dng_string & dng_string::operator= (const dng_string &s)
541 {
542
543 if (this != &s)
544 {
545
546 Set (s.Get ());
547
548 }
549
550 return *this;
551
552 }
553
554 /*****************************************************************************/
555
~dng_string()556 dng_string::~dng_string ()
557 {
558
559 }
560
561 /*****************************************************************************/
562
Get() const563 const char * dng_string::Get () const
564 {
565
566 if (fData.Buffer ())
567 {
568
569 return fData.Buffer_char ();
570
571 }
572
573 return "";
574
575 }
576
577 /*****************************************************************************/
578
IsASCII() const579 bool dng_string::IsASCII () const
580 {
581
582 return ::IsASCII (Get ());
583
584 }
585
586 /*****************************************************************************/
587
Set(const char * s)588 void dng_string::Set (const char *s)
589 {
590
591 // Measure the new length.
592
593 uint32 newLen = (s != NULL ? strlenAsUint32 (s) : 0);
594
595 // If it is a NULL string, then clear the buffer.
596
597 if (newLen == 0)
598 {
599
600 fData.Clear ();
601
602 }
603
604 // Else we need to copy the bytes.
605
606 else
607 {
608
609 uint32 oldLen = Length ();
610
611 // We might be setting this string to a sub-string of itself,
612 // so don't reallocate the data unless the string is getting
613 // longer.
614
615 if (newLen > oldLen)
616 {
617
618 fData.Clear ();
619
620 fData.Allocate (SafeUint32Add (newLen, 1));
621
622 }
623
624 char *d = fData.Buffer_char ();
625
626 for (uint32 k = 0; k <= newLen; k++)
627 {
628
629 d [k] = s [k];
630
631 }
632
633 }
634
635 }
636
637 /*****************************************************************************/
638
Set_ASCII(const char * s)639 void dng_string::Set_ASCII (const char *s)
640 {
641
642 if (::IsASCII (s))
643 {
644
645 Set (s);
646
647 }
648
649 else
650 {
651
652 Set_SystemEncoding (s);
653
654 }
655
656 }
657
658 /*****************************************************************************/
659
Set_UTF8(const char * s)660 void dng_string::Set_UTF8 (const char *s)
661 {
662
663 uint32 len = strlenAsUint32 (s);
664
665 const char *sEnd = s + len;
666
667 // Worst case expansion is 1-byte characters expanding to
668 // replacement character, which requires 3 bytes.
669
670 const uint32 destBufferLength = SafeUint32Add (SafeUint32Mult (len, 3), 1);
671 dng_memory_data buffer (destBufferLength);
672
673 uint8 *d = buffer.Buffer_uint8 ();
674 uint8 * const destEnd = d + destBufferLength;
675
676 while (s < sEnd)
677 {
678
679 uint32 aChar = DecodeUTF8 (s, (uint32) (sEnd - s));
680
681 if (aChar > 0x7FFFFFFF)
682 {
683 aChar = kREPLACEMENT_CHARACTER;
684 }
685
686 #if qDNGValidate
687
688 if (aChar == kREPLACEMENT_CHARACTER)
689 {
690 ReportWarning ("Expected UTF-8 value is not valid UTF-8 (or contains a kREPLACEMENT_CHARACTER)");
691 }
692
693 #endif
694
695 if (aChar < 0x00000080)
696 {
697 CheckSpaceLeftInBuffer (d, destEnd, 1);
698 *(d++) = (uint8) aChar;
699 }
700
701 else if (aChar < 0x00000800)
702 {
703 CheckSpaceLeftInBuffer (d, destEnd, 2);
704 *(d++) = (uint8) ((aChar >> 6) | 0x000000C0);
705 *(d++) = (uint8) ((aChar & 0x0000003F) | 0x00000080);
706 }
707
708 else if (aChar < 0x00010000)
709 {
710 CheckSpaceLeftInBuffer (d, destEnd, 3);
711 *(d++) = (uint8) ( (aChar >> 12) | 0x000000E0);
712 *(d++) = (uint8) (((aChar >> 6) & 0x0000003F) | 0x00000080);
713 *(d++) = (uint8) ( (aChar & 0x0000003F) | 0x00000080);
714 }
715
716 else if (aChar < 0x00200000)
717 {
718 CheckSpaceLeftInBuffer (d, destEnd, 4);
719 *(d++) = (uint8) ( (aChar >> 18) | 0x000000F0);
720 *(d++) = (uint8) (((aChar >> 12) & 0x0000003F) | 0x00000080);
721 *(d++) = (uint8) (((aChar >> 6) & 0x0000003F) | 0x00000080);
722 *(d++) = (uint8) ( (aChar & 0x0000003F) | 0x00000080);
723 }
724
725 else if (aChar < 0x04000000)
726 {
727 CheckSpaceLeftInBuffer (d, destEnd, 5);
728 *(d++) = (uint8) ( (aChar >> 24) | 0x000000F8);
729 *(d++) = (uint8) (((aChar >> 18) & 0x0000003F) | 0x00000080);
730 *(d++) = (uint8) (((aChar >> 12) & 0x0000003F) | 0x00000080);
731 *(d++) = (uint8) (((aChar >> 6) & 0x0000003F) | 0x00000080);
732 *(d++) = (uint8) ( (aChar & 0x0000003F) | 0x00000080);
733 }
734
735 else
736 {
737 CheckSpaceLeftInBuffer (d, destEnd, 6);
738 *(d++) = (uint8) ( (aChar >> 30) | 0x000000FC);
739 *(d++) = (uint8) (((aChar >> 24) & 0x0000003F) | 0x00000080);
740 *(d++) = (uint8) (((aChar >> 18) & 0x0000003F) | 0x00000080);
741 *(d++) = (uint8) (((aChar >> 12) & 0x0000003F) | 0x00000080);
742 *(d++) = (uint8) (((aChar >> 6) & 0x0000003F) | 0x00000080);
743 *(d++) = (uint8) ( (aChar & 0x0000003F) | 0x00000080);
744 }
745
746 }
747
748 CheckSpaceLeftInBuffer (d, destEnd, 1);
749 *d = 0;
750
751 Set (buffer.Buffer_char ());
752
753 }
754
755 /*****************************************************************************/
756
Get_SystemEncoding(dng_memory_data & buffer) const757 uint32 dng_string::Get_SystemEncoding (dng_memory_data &buffer) const
758 {
759
760 if (IsASCII ())
761 {
762
763 uint32 len = Length ();
764
765 const uint32 destBufferLength = SafeUint32Add (len, 1);
766 buffer.Allocate (destBufferLength);
767
768 memcpy (buffer.Buffer (), Get (), destBufferLength);
769
770 return len;
771
772 }
773
774 else
775 {
776
777 #if qMacOS || qWinOS
778
779 return Extract_SystemEncoding (*this, buffer);
780
781 #else
782
783 // Fallback logic to force the string to ASCII.
784
785 dng_string temp (*this);
786
787 temp.ForceASCII ();
788
789 return temp.Get_SystemEncoding (buffer);
790
791 #endif
792
793 }
794
795 }
796
797 /*****************************************************************************/
798
Set_SystemEncoding(const char * s)799 void dng_string::Set_SystemEncoding (const char *s)
800 {
801
802 if (::IsASCII (s))
803 {
804
805 Set (s);
806
807 }
808
809 else
810 {
811
812 #if qMacOS || qWinOS
813
814 Assign_SystemEncoding (*this, s);
815
816 #else
817
818 // Fallback logic that just grabs the ASCII characters and
819 // ignores the non-ASCII characters.
820
821 uint32 len = strlenAsUint32 (s);
822
823 const uint32 destBufferLength = SafeUint32Add (len, 1);
824 dng_memory_data buffer (destBufferLength);
825
826 uint8 *d = buffer.Buffer_uint8 ();
827 uint8 * const destEnd = d + destBufferLength;
828
829 while (*s)
830 {
831
832 uint8 c = (uint8) *(s++);
833
834 if ((c & 0x80) == 0)
835 {
836
837 CheckSpaceLeftInBuffer (d, destEnd, 1);
838 *(d++) = c;
839
840 }
841
842 }
843
844 CheckSpaceLeftInBuffer (d, destEnd, 1);
845 *d = 0;
846
847 Set (buffer.Buffer_char ());
848
849 #endif
850
851 }
852
853 }
854
855 /*****************************************************************************/
856
ValidSystemEncoding() const857 bool dng_string::ValidSystemEncoding () const
858 {
859
860 if (IsASCII ())
861 {
862
863 return true;
864
865 }
866
867 dng_memory_data buffer;
868
869 Get_SystemEncoding (buffer);
870
871 dng_string temp;
872
873 temp.Set_SystemEncoding (buffer.Buffer_char ());
874
875 return (*this == temp);
876
877 }
878
879 /*****************************************************************************/
880
Set_JIS_X208_1990(const char * s)881 void dng_string::Set_JIS_X208_1990 (const char *s)
882 {
883
884 if (::IsASCII (s))
885 {
886
887 Set (s);
888
889 }
890
891 else
892 {
893
894 #if qMacOS || qWinOS
895
896 Assign_JIS_X208_1990 (*this, s);
897
898 #else
899
900 // Fallback to the ASCII extraction logic.
901
902 Set_SystemEncoding (s);
903
904 #endif
905
906 }
907
908 }
909
910 /*****************************************************************************/
911
DecodeUTF8(const char * & s,uint32 maxBytes,bool * isValid)912 uint32 dng_string::DecodeUTF8 (const char *&s,
913 uint32 maxBytes,
914 bool *isValid)
915 {
916
917 static const uint8 gUTF8Bytes [256] =
918 {
919 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
920 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
921 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
922 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
923 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
924 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
925 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,
926 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,4,4,4,4,4,0,0,0,0,0,0,0,0,0,0,0
927 };
928
929 if (isValid)
930 {
931 *isValid = true;
932 }
933
934 const uint8 *nBuf = (const uint8 *) s;
935
936 uint32 aChar = nBuf [0];
937
938 uint32 aSize = gUTF8Bytes [aChar];
939
940 if (aSize > maxBytes)
941 {
942
943 s += maxBytes;
944
945 if (isValid)
946 {
947 *isValid = false;
948 }
949
950 return kREPLACEMENT_CHARACTER;
951
952 }
953
954 s += aSize;
955
956 for (uint32 extra = 1; extra < aSize; extra++)
957 {
958
959 if ((nBuf [extra] & 0xC0) != 0x80)
960 {
961
962 if (isValid)
963 {
964 *isValid = false;
965 }
966
967 return kREPLACEMENT_CHARACTER;
968
969 }
970
971 }
972
973 switch (aSize)
974 {
975
976 case 0:
977 {
978
979 s++; // Don't get stuck in infinite loop
980
981 if (isValid)
982 {
983 *isValid = false;
984 }
985
986 return kREPLACEMENT_CHARACTER;
987
988 }
989
990 case 1:
991 {
992
993 return aChar;
994
995 }
996
997 case 2:
998 {
999
1000 aChar = ((aChar << 6) + nBuf [1]) - (uint32) 0x00003080UL;
1001
1002 break;
1003
1004 }
1005
1006 case 3:
1007 {
1008
1009 aChar = ((((aChar << 6) + nBuf [1])
1010 << 6) + nBuf [2]) - (uint32) 0x000E2080UL;
1011
1012 break;
1013
1014 }
1015
1016 case 4:
1017 {
1018
1019 aChar = ((((((aChar << 6) + nBuf [1])
1020 << 6) + nBuf [2])
1021 << 6) + nBuf [3]) - (uint32) 0x03C82080UL;
1022
1023 break;
1024
1025 }
1026 }
1027
1028 if (aChar < 0x7F || aChar > 0x0010FFFF)
1029 {
1030
1031 if (isValid)
1032 {
1033 *isValid = false;
1034 }
1035
1036 return kREPLACEMENT_CHARACTER;
1037
1038 }
1039
1040 return aChar;
1041
1042 }
1043
1044 /*****************************************************************************/
1045
IsUTF8(const char * s)1046 bool dng_string::IsUTF8 (const char *s)
1047 {
1048
1049 uint32 len = strlenAsUint32 (s);
1050
1051 const char *sEnd = s + len;
1052
1053 while (s < sEnd)
1054 {
1055
1056 bool isValid = true;
1057
1058 (void) DecodeUTF8 (s, (uint32) (sEnd - s), &isValid);
1059
1060 if (!isValid)
1061 {
1062 return false;
1063 }
1064
1065 }
1066
1067 return true;
1068
1069 }
1070
1071 /*****************************************************************************/
1072
Set_UTF8_or_System(const char * s)1073 void dng_string::Set_UTF8_or_System (const char *s)
1074 {
1075
1076 if (::IsASCII (s))
1077 {
1078
1079 Set (s);
1080
1081 }
1082
1083 else if (IsUTF8 (s))
1084 {
1085
1086 Set_UTF8 (s);
1087
1088 }
1089
1090 else
1091 {
1092
1093 Set_SystemEncoding (s);
1094
1095 }
1096
1097 }
1098
1099 /*****************************************************************************/
1100
Get_UTF16(dng_memory_data & buffer) const1101 uint32 dng_string::Get_UTF16 (dng_memory_data &buffer) const
1102 {
1103
1104 uint32 count = 0;
1105
1106 const char *sPtr = Get ();
1107
1108 while (*sPtr)
1109 {
1110
1111 uint32 x = DecodeUTF8 (sPtr);
1112
1113 if (x <= 0x0000FFFF ||
1114 x > 0x0010FFFF)
1115 {
1116
1117 count = SafeUint32Add (count, 1);
1118
1119 }
1120
1121 else
1122 {
1123
1124 count = SafeUint32Add (count, 2);
1125
1126 }
1127
1128 }
1129
1130 const uint32 destBufferLength = SafeUint32Add (count, 1);
1131 buffer.Allocate (destBufferLength, sizeof (uint16));
1132
1133 uint16 *dPtr = buffer.Buffer_uint16 ();
1134 uint16 * const destEnd = dPtr + destBufferLength;
1135
1136 sPtr = Get ();
1137
1138 while (*sPtr)
1139 {
1140
1141 uint32 x = DecodeUTF8 (sPtr);
1142
1143 if (x <= 0x0000FFFF)
1144 {
1145
1146 CheckSpaceLeftInBuffer (dPtr, destEnd, 1);
1147 *(dPtr++) = (uint16) x;
1148
1149 }
1150
1151 else if (x > 0x0010FFFF)
1152 {
1153
1154 CheckSpaceLeftInBuffer (dPtr, destEnd, 1);
1155 *(dPtr++) = (uint16) kREPLACEMENT_CHARACTER;
1156
1157 }
1158
1159 else
1160 {
1161
1162 x -= 0x00010000;
1163
1164 CheckSpaceLeftInBuffer (dPtr, destEnd, 2);
1165 *(dPtr++) = (uint16) ((x >> 10 ) + 0x0000D800);
1166 *(dPtr++) = (uint16) ((x & 0x000003FF) + 0x0000DC00);
1167
1168 }
1169
1170 }
1171
1172 CheckSpaceLeftInBuffer (dPtr, destEnd, 1);
1173 *dPtr = 0;
1174
1175 return count;
1176
1177 }
1178
1179 /*****************************************************************************/
1180
Set_UTF16(const uint16 * s)1181 void dng_string::Set_UTF16 (const uint16 *s)
1182 {
1183
1184 if (!s)
1185 {
1186 Clear ();
1187 return;
1188 }
1189
1190 bool swap = false;
1191
1192 if (s [0] == 0xFFFE) // Swapped byte order marker
1193 {
1194 swap = true;
1195 s++;
1196 }
1197
1198 else if (s [0] == 0xFEFF) // Non-swapped byte order marker
1199 {
1200 s++;
1201 }
1202
1203 uint32 length16 = 0;
1204
1205 while (s [length16] != 0)
1206 {
1207 length16 = SafeUint32Add (length16, 1);
1208 }
1209
1210 const uint16 *sEnd = s + length16;
1211
1212 const uint32 destBufferSize =
1213 SafeUint32Add (SafeUint32Mult (length16, 6), 1);
1214 dng_memory_data buffer (destBufferSize);
1215
1216 uint8 *d = buffer.Buffer_uint8 ();
1217 uint8 * const destEnd = d + destBufferSize;
1218
1219 while (s < sEnd)
1220 {
1221
1222 uint32 aChar = *s++;
1223
1224 if (swap)
1225 {
1226 aChar = ((aChar << 8) | (aChar >> 8)) & 0x0000FFFF;
1227 }
1228
1229 if ((aChar >= 0x0000D800) && (aChar <= 0x0000DBFF) && (s < sEnd))
1230 {
1231
1232 uint32 aLow = *s;
1233
1234 if (swap)
1235 {
1236 aLow = ((aLow << 8) | (aLow >> 8)) & 0x0000FFFF;
1237 }
1238
1239 if ((aLow >= 0x0000DC00) && (aLow <= 0x0000DFFF))
1240 {
1241
1242 aChar = ((aChar - 0x0000D800) << 10) +
1243 (aLow - 0x0000DC00) +
1244 0x00010000;
1245
1246 s++;
1247
1248 }
1249
1250 }
1251
1252 if (aChar > 0x7FFFFFFF)
1253 {
1254 aChar = kREPLACEMENT_CHARACTER;
1255 }
1256
1257 if (aChar < 0x00000080)
1258 {
1259 CheckSpaceLeftInBuffer (d, destEnd, 1);
1260 *(d++) = (uint8) aChar;
1261 }
1262
1263 else if (aChar < 0x00000800)
1264 {
1265 CheckSpaceLeftInBuffer (d, destEnd, 2);
1266 *(d++) = (uint8) ((aChar >> 6) | 0x000000C0);
1267 *(d++) = (uint8) ((aChar & 0x0000003F) | 0x00000080);
1268 }
1269
1270 else if (aChar < 0x00010000)
1271 {
1272 CheckSpaceLeftInBuffer (d, destEnd, 3);
1273 *(d++) = (uint8) ( (aChar >> 12) | 0x000000E0);
1274 *(d++) = (uint8) (((aChar >> 6) & 0x0000003F) | 0x00000080);
1275 *(d++) = (uint8) ( (aChar & 0x0000003F) | 0x00000080);
1276 }
1277
1278 else if (aChar < 0x00200000)
1279 {
1280 CheckSpaceLeftInBuffer (d, destEnd, 4);
1281 *(d++) = (uint8) ( (aChar >> 18) | 0x000000F0);
1282 *(d++) = (uint8) (((aChar >> 12) & 0x0000003F) | 0x00000080);
1283 *(d++) = (uint8) (((aChar >> 6) & 0x0000003F) | 0x00000080);
1284 *(d++) = (uint8) ( (aChar & 0x0000003F) | 0x00000080);
1285 }
1286
1287 else if (aChar < 0x04000000)
1288 {
1289 CheckSpaceLeftInBuffer (d, destEnd, 5);
1290 *(d++) = (uint8) ( (aChar >> 24) | 0x000000F8);
1291 *(d++) = (uint8) (((aChar >> 18) & 0x0000003F) | 0x00000080);
1292 *(d++) = (uint8) (((aChar >> 12) & 0x0000003F) | 0x00000080);
1293 *(d++) = (uint8) (((aChar >> 6) & 0x0000003F) | 0x00000080);
1294 *(d++) = (uint8) ( (aChar & 0x0000003F) | 0x00000080);
1295 }
1296
1297 else
1298 {
1299 CheckSpaceLeftInBuffer (d, destEnd, 6);
1300 *(d++) = (uint8) ( (aChar >> 30) | 0x000000FC);
1301 *(d++) = (uint8) (((aChar >> 24) & 0x0000003F) | 0x00000080);
1302 *(d++) = (uint8) (((aChar >> 18) & 0x0000003F) | 0x00000080);
1303 *(d++) = (uint8) (((aChar >> 12) & 0x0000003F) | 0x00000080);
1304 *(d++) = (uint8) (((aChar >> 6) & 0x0000003F) | 0x00000080);
1305 *(d++) = (uint8) ( (aChar & 0x0000003F) | 0x00000080);
1306 }
1307
1308 }
1309
1310 CheckSpaceLeftInBuffer (d, destEnd, 1);
1311 *d = 0;
1312
1313 Set (buffer.Buffer_char ());
1314
1315 }
1316
1317 /*****************************************************************************/
1318
Clear()1319 void dng_string::Clear ()
1320 {
1321
1322 Set (NULL);
1323
1324 }
1325
1326 /*****************************************************************************/
1327
Truncate(uint32 maxBytes)1328 void dng_string::Truncate (uint32 maxBytes)
1329 {
1330
1331 uint32 len = Length ();
1332
1333 if (len > maxBytes)
1334 {
1335
1336 uint8 *s = fData.Buffer_uint8 ();
1337
1338 // Don't truncate on an extension character. Extensions characters
1339 // in UTF-8 have the 0x80 bit set and the 0x40 bit clear.
1340
1341 while (maxBytes > 0 && ((s [maxBytes]) & 0xC0) == 0x80)
1342 {
1343
1344 maxBytes--;
1345
1346 }
1347
1348 s [maxBytes] = 0;
1349
1350 }
1351
1352 }
1353
1354 /*****************************************************************************/
1355
TrimTrailingBlanks()1356 bool dng_string::TrimTrailingBlanks ()
1357 {
1358
1359 bool didTrim = false;
1360
1361 if (fData.Buffer ())
1362 {
1363
1364 char *s = fData.Buffer_char ();
1365
1366 uint32 len = strlenAsUint32 (s);
1367
1368 while (len > 0 && s [len - 1] == ' ')
1369 {
1370 len--;
1371 didTrim = true;
1372 }
1373
1374 s [len] = 0;
1375
1376 }
1377
1378 return didTrim;
1379
1380 }
1381
1382 /*****************************************************************************/
1383
TrimLeadingBlanks()1384 bool dng_string::TrimLeadingBlanks ()
1385 {
1386
1387 bool didTrim = false;
1388
1389 const char *s = Get ();
1390
1391 while (*s == ' ')
1392 {
1393 s++;
1394 didTrim = true;
1395 }
1396
1397 if (didTrim)
1398 {
1399 Set (s);
1400 }
1401
1402 return didTrim;
1403
1404 }
1405
1406 /*****************************************************************************/
1407
IsEmpty() const1408 bool dng_string::IsEmpty () const
1409 {
1410
1411 const char *s = Get ();
1412
1413 return *s == 0;
1414
1415 }
1416
1417 /*****************************************************************************/
1418
Length() const1419 uint32 dng_string::Length () const
1420 {
1421
1422 const char *s = Get ();
1423
1424 return strlenAsUint32 (s);
1425
1426 }
1427
1428 /*****************************************************************************/
1429
operator ==(const dng_string & s) const1430 bool dng_string::operator== (const dng_string &s) const
1431 {
1432
1433 const char *s1 = Get ();
1434 const char *s2 = s.Get ();
1435
1436 return strcmp (s1, s2) == 0;
1437
1438 }
1439
1440 /*****************************************************************************/
1441
Matches(const char * t,const char * s,bool case_sensitive)1442 bool dng_string::Matches (const char *t,
1443 const char *s,
1444 bool case_sensitive)
1445 {
1446
1447 while (*s != 0)
1448 {
1449
1450 char c1 = *(s++);
1451 char c2 = *(t++);
1452
1453 if (!case_sensitive)
1454 {
1455 c1 = ForceUppercase (c1);
1456 c2 = ForceUppercase (c2);
1457 }
1458
1459 if (c1 != c2)
1460 {
1461 return false;
1462 }
1463
1464 }
1465
1466 return (*t == 0);
1467
1468 }
1469
1470 /*****************************************************************************/
1471
Matches(const char * s,bool case_sensitive) const1472 bool dng_string::Matches (const char *s,
1473 bool case_sensitive) const
1474 {
1475
1476 return dng_string::Matches (Get (), s, case_sensitive);
1477
1478 }
1479
1480 /*****************************************************************************/
1481
StartsWith(const char * s,bool case_sensitive) const1482 bool dng_string::StartsWith (const char *s,
1483 bool case_sensitive) const
1484 {
1485
1486 const char *t = Get ();
1487
1488 while (*s != 0)
1489 {
1490
1491 char c1 = *(s++);
1492 char c2 = *(t++);
1493
1494 if (!case_sensitive)
1495 {
1496 c1 = ForceUppercase (c1);
1497 c2 = ForceUppercase (c2);
1498 }
1499
1500 if (c1 != c2)
1501 {
1502 return false;
1503 }
1504
1505 }
1506
1507 return true;
1508
1509 }
1510
1511 /*****************************************************************************/
1512
EndsWith(const char * s,bool case_sensitive) const1513 bool dng_string::EndsWith (const char *s,
1514 bool case_sensitive) const
1515 {
1516
1517 uint32 len1 = Length ();
1518
1519 uint32 len2 = strlenAsUint32 (s);
1520
1521 if (len1 < len2)
1522 {
1523 return false;
1524 }
1525
1526 const char *t = Get () + (len1 - len2);
1527
1528 while (*s != 0)
1529 {
1530
1531 char c1 = *(s++);
1532 char c2 = *(t++);
1533
1534 if (!case_sensitive)
1535 {
1536 c1 = ForceUppercase (c1);
1537 c2 = ForceUppercase (c2);
1538 }
1539
1540 if (c1 != c2)
1541 {
1542 return false;
1543 }
1544
1545 }
1546
1547 return true;
1548
1549 }
1550
1551 /*****************************************************************************/
1552
Contains(const char * s,bool case_sensitive,int32 * match_offset) const1553 bool dng_string::Contains (const char *s,
1554 bool case_sensitive,
1555 int32 *match_offset) const
1556 {
1557
1558 if (match_offset)
1559 {
1560 *match_offset = -1;
1561 }
1562
1563 uint32 len1 = Length ();
1564
1565 uint32 len2 = strlenAsUint32 (s);
1566
1567 if (len1 < len2)
1568 {
1569 return false;
1570 }
1571
1572 uint32 offsets = len1 - len2;
1573
1574 for (uint32 offset = 0; offset <= offsets; offset++)
1575 {
1576
1577 const char *ss = s;
1578 const char *tt = Get () + offset;
1579
1580 while (*ss != 0)
1581 {
1582
1583 char c1 = *(ss++);
1584 char c2 = *(tt++);
1585
1586 if (!case_sensitive)
1587 {
1588 c1 = ForceUppercase (c1);
1589 c2 = ForceUppercase (c2);
1590 }
1591
1592 if (c1 != c2)
1593 {
1594 goto tryNextOffset;
1595 }
1596
1597 }
1598
1599 if (match_offset)
1600 {
1601 *match_offset = offset;
1602 }
1603
1604 return true;
1605
1606 tryNextOffset: ;
1607
1608 }
1609
1610 return false;
1611
1612 }
1613
1614 /*****************************************************************************/
1615
Replace(const char * old_string,const char * new_string,bool case_sensitive)1616 bool dng_string::Replace (const char *old_string,
1617 const char *new_string,
1618 bool case_sensitive)
1619 {
1620
1621 int32 match_offset = -1;
1622
1623 if (Contains (old_string,
1624 case_sensitive,
1625 &match_offset))
1626 {
1627
1628 uint32 len1 = Length ();
1629
1630 uint32 len2 = strlenAsUint32 (old_string);
1631 uint32 len3 = strlenAsUint32 (new_string);
1632
1633 if (len2 == len3)
1634 {
1635
1636 strncpy (fData.Buffer_char () + match_offset,
1637 new_string,
1638 len3);
1639
1640 }
1641
1642 else if (len2 > len3)
1643 {
1644
1645 strncpy (fData.Buffer_char () + match_offset,
1646 new_string,
1647 len3);
1648
1649 const char *s = fData.Buffer_char () + match_offset + len2;
1650 char *d = fData.Buffer_char () + match_offset + len3;
1651
1652 uint32 extra = len1 - match_offset - len2 + 1; // + 1 for NULL termination
1653
1654 for (uint32 j = 0; j < extra; j++)
1655 {
1656 *(d++) = *(s++);
1657 }
1658
1659 }
1660
1661 else
1662 {
1663
1664 // "len1 - len2" cannot wrap around because we know that if this
1665 // string contains old_string, len1 >= len2 must hold.
1666 dng_memory_data tempBuffer (
1667 SafeUint32Add (SafeUint32Add (len1 - len2, len3), 1));
1668
1669 if (match_offset)
1670 {
1671
1672 strncpy (tempBuffer.Buffer_char (),
1673 fData .Buffer_char (),
1674 match_offset);
1675
1676 }
1677
1678 if (len3)
1679 {
1680
1681 strncpy (tempBuffer.Buffer_char () + match_offset,
1682 new_string,
1683 len3);
1684
1685 }
1686
1687 uint32 extra = len1 - match_offset - len2 + 1; // + 1 for NULL termination
1688
1689 strncpy (tempBuffer.Buffer_char () + match_offset + len3,
1690 fData .Buffer_char () + match_offset + len2,
1691 extra);
1692
1693 Set (tempBuffer.Buffer_char ());
1694
1695 }
1696
1697 return true;
1698
1699 }
1700
1701 return false;
1702
1703 }
1704
1705 /*****************************************************************************/
1706
TrimLeading(const char * s,bool case_sensitive)1707 bool dng_string::TrimLeading (const char *s,
1708 bool case_sensitive)
1709 {
1710
1711 if (StartsWith (s, case_sensitive))
1712 {
1713
1714 Set (Get () + strlenAsUint32 (s));
1715
1716 return true;
1717
1718 }
1719
1720 return false;
1721
1722 }
1723
1724 /*****************************************************************************/
1725
Append(const char * s)1726 void dng_string::Append (const char *s)
1727 {
1728
1729 uint32 len2 = strlenAsUint32 (s);
1730
1731 if (len2)
1732 {
1733
1734 uint32 len1 = Length ();
1735
1736 dng_memory_data temp (SafeUint32Add (SafeUint32Add (len1, len2), 1));
1737
1738 char *buffer = temp.Buffer_char ();
1739
1740 if (len1)
1741 {
1742 memcpy (buffer, Get (), len1);
1743 }
1744
1745 memcpy (buffer + len1, s, len2 + 1);
1746
1747 Set (buffer);
1748
1749 }
1750
1751 }
1752
1753 /*****************************************************************************/
1754
SetUppercase()1755 void dng_string::SetUppercase ()
1756 {
1757
1758 if (fData.Buffer ())
1759 {
1760
1761 uint32 len = Length ();
1762
1763 char *dPtr = fData.Buffer_char ();
1764
1765 for (uint32 j = 0; j < len; j++)
1766 {
1767
1768 char c = dPtr [j];
1769
1770 if (c >= 'a' && c <= 'z')
1771 {
1772
1773 dPtr [j] = c - 'a' + 'A';
1774
1775 }
1776
1777 }
1778
1779 }
1780
1781 }
1782
1783 /*****************************************************************************/
1784
SetLowercase()1785 void dng_string::SetLowercase ()
1786 {
1787
1788 if (fData.Buffer ())
1789 {
1790
1791 uint32 len = Length ();
1792
1793 char *dPtr = fData.Buffer_char ();
1794
1795 for (uint32 j = 0; j < len; j++)
1796 {
1797
1798 char c = dPtr [j];
1799
1800 if (c >= 'A' && c <= 'Z')
1801 {
1802
1803 dPtr [j] = c - 'A' + 'a';
1804
1805 }
1806
1807 }
1808
1809 }
1810
1811 }
1812
1813 /*****************************************************************************/
1814
SetLineEndings(char ending)1815 void dng_string::SetLineEndings (char ending)
1816 {
1817
1818 if (fData.Buffer ())
1819 {
1820
1821 const char *sPtr = fData.Buffer_char ();
1822 char *dPtr = fData.Buffer_char ();
1823
1824 while (*sPtr)
1825 {
1826
1827 char c = *(sPtr++);
1828
1829 char nc = sPtr [0];
1830
1831 if ((c == '\r' && nc == '\n') ||
1832 (c == '\n' && nc == '\r'))
1833 {
1834
1835 sPtr++;
1836
1837 if (ending)
1838 {
1839 *(dPtr++) = ending;
1840 }
1841
1842 }
1843
1844 else if (c == '\n' ||
1845 c == '\r')
1846 {
1847
1848 if (ending)
1849 {
1850 *(dPtr++) = ending;
1851 }
1852
1853 }
1854
1855 else
1856 {
1857
1858 *(dPtr++) = c;
1859
1860 }
1861
1862 }
1863
1864 *dPtr = 0;
1865
1866 }
1867
1868 }
1869
1870 /*****************************************************************************/
1871
StripLowASCII()1872 void dng_string::StripLowASCII ()
1873 {
1874
1875 if (fData.Buffer ())
1876 {
1877
1878 const char *sPtr = fData.Buffer_char ();
1879 char *dPtr = fData.Buffer_char ();
1880
1881 while (*sPtr)
1882 {
1883
1884 char c = *(sPtr++);
1885
1886 if (c == '\r' || c == '\n' || (uint8) c >= ' ')
1887 {
1888
1889 *(dPtr++) = c;
1890
1891 }
1892
1893 }
1894
1895 *dPtr = 0;
1896
1897 }
1898
1899 }
1900
1901 /*****************************************************************************/
1902
NormalizeAsCommaSeparatedNumbers()1903 void dng_string::NormalizeAsCommaSeparatedNumbers ()
1904 {
1905
1906 if (fData.Buffer ())
1907 {
1908
1909 const char *sPtr = fData.Buffer_char ();
1910 char *dPtr = fData.Buffer_char ();
1911
1912 bool commaInserted = false;
1913
1914 while (*sPtr)
1915 {
1916
1917 uint32 c = DecodeUTF8 (sPtr);
1918
1919 // Support number formats such as "3", "+3.0", "-3.1416", "314.16e-2",
1920 // "0.31416E1", but no hex/octal number representations.
1921
1922 if (isdigit ((int) c) || c == '.' || c == '-' || c == '+' || c == 'e' || c == 'E')
1923 {
1924
1925 *(dPtr++) = (char) c;
1926
1927 if (commaInserted)
1928 {
1929
1930 commaInserted = false;
1931
1932 }
1933
1934 }
1935
1936 else if (!commaInserted)
1937 {
1938
1939 *(dPtr++) = ',';
1940
1941 commaInserted = true;
1942
1943 }
1944
1945 }
1946
1947 *dPtr = 0;
1948
1949 }
1950
1951 }
1952
1953 /******************************************************************************/
1954
1955 // Unicode to low-ASCII strings table.
1956
1957 struct UnicodeToLowASCIIEntry
1958 {
1959 uint32 unicode;
1960 const char *ascii;
1961 };
1962
1963 static const UnicodeToLowASCIIEntry kUnicodeToLowASCII [] =
1964 {
1965 { 0x00A0, " " },
1966 { 0x00A1, "!" },
1967 { 0x00A9, "(C)" },
1968 { 0x00AA, "a" },
1969 { 0x00AB, "<<" },
1970 { 0x00AC, "!" },
1971 { 0x00AE, "(R)" },
1972 { 0x00B0, "dg" },
1973 { 0x00B1, "+-" },
1974 { 0x00B7, "." },
1975 { 0x00BA, "o" },
1976 { 0x00BB, ">>" },
1977 { 0x00BF, "?" },
1978 { 0x00C0, "A" },
1979 { 0x00C1, "A" },
1980 { 0x00C2, "A" },
1981 { 0x00C3, "A" },
1982 { 0x00C4, "A" },
1983 { 0x00C5, "A" },
1984 { 0x00C6, "AE" },
1985 { 0x00C7, "C" },
1986 { 0x00C8, "E" },
1987 { 0x00C9, "E" },
1988 { 0x00CA, "E" },
1989 { 0x00CB, "E" },
1990 { 0x00CC, "I" },
1991 { 0x00CD, "I" },
1992 { 0x00CE, "I" },
1993 { 0x00CF, "I" },
1994 { 0x00D1, "N" },
1995 { 0x00D2, "O" },
1996 { 0x00D3, "O" },
1997 { 0x00D4, "O" },
1998 { 0x00D5, "O" },
1999 { 0x00D6, "O" },
2000 { 0x00D8, "O" },
2001 { 0x00D9, "U" },
2002 { 0x00DA, "U" },
2003 { 0x00DB, "U" },
2004 { 0x00DC, "U" },
2005 { 0x00DD, "Y" },
2006 { 0x00E0, "a" },
2007 { 0x00E1, "a" },
2008 { 0x00E2, "a" },
2009 { 0x00E3, "a" },
2010 { 0x00E4, "a" },
2011 { 0x00E5, "a" },
2012 { 0x00E6, "ae" },
2013 { 0x00E7, "c" },
2014 { 0x00E8, "e" },
2015 { 0x00E9, "e" },
2016 { 0x00EA, "e" },
2017 { 0x00EB, "e" },
2018 { 0x00EC, "i" },
2019 { 0x00ED, "i" },
2020 { 0x00EE, "i" },
2021 { 0x00EF, "i" },
2022 { 0x00F1, "n" },
2023 { 0x00F2, "o" },
2024 { 0x00F3, "o" },
2025 { 0x00F4, "o" },
2026 { 0x00F5, "o" },
2027 { 0x00F6, "o" },
2028 { 0x00F7, "/" },
2029 { 0x00F8, "o" },
2030 { 0x00F9, "u" },
2031 { 0x00FA, "u" },
2032 { 0x00FB, "u" },
2033 { 0x00FC, "u" },
2034 { 0x00FD, "y" },
2035 { 0x00FF, "y" },
2036 { 0x0131, "i" },
2037 { 0x0152, "OE" },
2038 { 0x0153, "oe" },
2039 { 0x0178, "Y" },
2040 { 0x2013, "-" },
2041 { 0x2014, "-" },
2042 { 0x2018, "'" },
2043 { 0x2019, "'" },
2044 { 0x201A, "," },
2045 { 0x201C, "\"" },
2046 { 0x201D, "\"" },
2047 { 0x201E, ",," },
2048 { 0x2022, "." },
2049 { 0x2026, "..." },
2050 { 0x2039, "<" },
2051 { 0x203A, ">" },
2052 { 0x2044, "/" },
2053 { 0x2122, "TM" },
2054 { 0x2206, "d" },
2055 { 0x2211, "S" },
2056 { 0x2260, "!=" },
2057 { 0x2264, "<=" },
2058 { 0x2265, ">=" },
2059 { 0x2318, "#" },
2060 { 0xFB01, "fi" },
2061 { 0xFB02, "fl" }
2062 };
2063
2064 /******************************************************************************/
2065
ForceASCII()2066 void dng_string::ForceASCII ()
2067 {
2068
2069 if (!IsASCII ())
2070 {
2071
2072 uint32 tempBufferSize =
2073 SafeUint32Add (SafeUint32Mult(Length(), 3), 1);
2074 dng_memory_data tempBuffer (tempBufferSize);
2075
2076 char *dPtr = tempBuffer.Buffer_char ();
2077 char * const destEnd = dPtr + tempBufferSize;
2078
2079 const char *sPtr = Get ();
2080
2081 while (*sPtr)
2082 {
2083
2084 uint32 x = DecodeUTF8 (sPtr);
2085
2086 if (x <= 0x007F)
2087 {
2088
2089 CheckSpaceLeftInBuffer (dPtr, destEnd, 1);
2090 *(dPtr++) = (char) x;
2091
2092 }
2093
2094 else
2095 {
2096
2097 const char *ascii = NULL;
2098
2099 const uint32 kTableEntrys = sizeof (kUnicodeToLowASCII ) /
2100 sizeof (kUnicodeToLowASCII [0]);
2101
2102 for (uint32 entry = 0; entry < kTableEntrys; entry++)
2103 {
2104
2105 if (kUnicodeToLowASCII [entry] . unicode == x)
2106 {
2107
2108 ascii = kUnicodeToLowASCII [entry] . ascii;
2109
2110 break;
2111
2112 }
2113
2114 }
2115
2116 if (ascii)
2117 {
2118
2119 while (*ascii)
2120 {
2121
2122 CheckSpaceLeftInBuffer (dPtr, destEnd, 1);
2123 *(dPtr++) = *(ascii++);
2124
2125 }
2126
2127 }
2128
2129 else
2130 {
2131
2132 CheckSpaceLeftInBuffer (dPtr, destEnd, 1);
2133 *(dPtr++) ='?';
2134
2135 }
2136
2137 }
2138
2139 }
2140
2141 CheckSpaceLeftInBuffer (dPtr, destEnd, 1);
2142 *dPtr = 0;
2143
2144 Set (tempBuffer.Buffer_char ());
2145
2146 }
2147
2148 }
2149
2150 /******************************************************************************/
2151
2152 static dng_mutex gProtectUCCalls ("gProtectUCCalls");
2153
2154 /******************************************************************************/
2155
Compare(const dng_string & s) const2156 int32 dng_string::Compare (const dng_string &s) const
2157 {
2158
2159 #if qMacOS
2160 #if TARGET_OS_IPHONE || TARGET_IPHONE_SIMULATOR
2161
2162 // TODO: Needs implementation.
2163 ThrowProgramError ("Compare() not implemented on iOS");
2164 return 0;
2165
2166 #else
2167
2168 {
2169
2170 dng_memory_data aStrA;
2171 dng_memory_data aStrB;
2172
2173 uint32 aLenA = this->Get_UTF16 (aStrA);
2174 uint32 aLenB = s .Get_UTF16 (aStrB);
2175
2176 if (aLenA > 0)
2177 {
2178
2179 if (aLenB > 0)
2180 {
2181
2182 // For some Mac OS versions anyway, UCCompareTextDefault is not
2183 // thread safe.
2184
2185 dng_lock_mutex lockMutex (&gProtectUCCalls);
2186
2187 UCCollateOptions aOptions = kUCCollateStandardOptions |
2188 kUCCollatePunctuationSignificantMask;
2189
2190 SInt32 aOrder = -1;
2191
2192 Boolean aEqual = false;
2193
2194 OSStatus searchStatus = ::UCCompareTextDefault (aOptions,
2195 aStrA.Buffer_uint16 (),
2196 aLenA,
2197 aStrB.Buffer_uint16 (),
2198 aLenB,
2199 &aEqual,
2200 &aOrder);
2201
2202 if (searchStatus == noErr)
2203 {
2204
2205 if (aEqual || (aOrder == 0))
2206 {
2207 return 0;
2208 }
2209
2210 else
2211 {
2212 return (aOrder > 0) ? 1 : -1;
2213 }
2214
2215 }
2216
2217 else
2218 {
2219
2220 DNG_REPORT ("UCCompareTextDefault failed");
2221
2222 return -1;
2223
2224 }
2225
2226 }
2227
2228 else
2229 {
2230 return 1;
2231 }
2232
2233 }
2234
2235 else
2236 {
2237
2238 if (aLenB > 0)
2239 {
2240 return -1;
2241 }
2242
2243 else
2244 {
2245 return 0;
2246 }
2247
2248 }
2249
2250 }
2251
2252 #endif // TARGET_OS_IPHONE || TARGET_IPHONE_SIMULATOR
2253
2254 #elif qWinOS
2255
2256 {
2257
2258 dng_memory_data aStrA;
2259 dng_memory_data aStrB;
2260
2261 uint32 aLenA = this->Get_UTF16 (aStrA);
2262 uint32 aLenB = s .Get_UTF16 (aStrB);
2263
2264 if (aLenA > 0)
2265 {
2266
2267 if (aLenB > 0)
2268 {
2269
2270 LCID locale = LOCALE_SYSTEM_DEFAULT;
2271
2272 DWORD aFlags = NORM_IGNOREWIDTH;
2273
2274 int aOrder = ::CompareStringW (locale,
2275 aFlags,
2276 (const WCHAR *) aStrA.Buffer_uint16 (),
2277 aLenA,
2278 (const WCHAR *) aStrB.Buffer_uint16 (),
2279 aLenB);
2280
2281 if (aOrder == CSTR_EQUAL)
2282 {
2283 return 0;
2284 }
2285
2286 else if (aOrder == CSTR_GREATER_THAN)
2287 {
2288 return 1;
2289 }
2290
2291 else
2292 {
2293 return -1;
2294 }
2295
2296 }
2297
2298 else
2299 {
2300 return 1;
2301 }
2302
2303 }
2304
2305 else
2306 {
2307
2308 if (aLenB > 0)
2309 {
2310 return -1;
2311 }
2312 else
2313 {
2314 return 0;
2315 }
2316
2317 }
2318
2319 }
2320
2321 #else
2322
2323 // Fallback to a pure Unicode sort order.
2324
2325 {
2326
2327 for (uint32 pass = 0; pass < 2; pass++)
2328 {
2329
2330 const char *aPtr = Get ();
2331 const char *bPtr = s.Get ();
2332
2333 while (*aPtr || *bPtr)
2334 {
2335
2336 if (!bPtr)
2337 {
2338 return 1;
2339 }
2340
2341 else if (!aPtr)
2342 {
2343 return -1;
2344 }
2345
2346 uint32 a = DecodeUTF8 (aPtr);
2347 uint32 b = DecodeUTF8 (bPtr);
2348
2349 // Ignore case on first compare pass.
2350
2351 if (pass == 0)
2352 {
2353
2354 if (a >= (uint32) 'a' && a <= (uint32) 'z')
2355 {
2356 a = a - (uint32) 'a' + (uint32) 'A';
2357 }
2358
2359 if (b >= (uint32) 'a' && b <= (uint32) 'z')
2360 {
2361 b = b - (uint32) 'a' + (uint32) 'A';
2362 }
2363
2364 }
2365
2366 if (b > a)
2367 {
2368 return 1;
2369 }
2370
2371 else if (a < b)
2372 {
2373 return -1;
2374 }
2375
2376 }
2377
2378 }
2379
2380 }
2381
2382 #endif
2383
2384 return 0;
2385
2386 }
2387
2388 /*****************************************************************************/
2389