This file is indexed.

/usr/include/mozjs-52/unicode/search.h is in libmozjs-52-dev 52.3.1-7fakesync1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
// Copyright (C) 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
**********************************************************************
*   Copyright (C) 2001-2011 IBM and others. All rights reserved.
**********************************************************************
*   Date        Name        Description
*  03/22/2000   helena      Creation.
**********************************************************************
*/

#ifndef SEARCH_H
#define SEARCH_H

#include "unicode/utypes.h"

/**
 * \file 
 * \brief C++ API: SearchIterator object.
 */
 
#if !UCONFIG_NO_COLLATION && !UCONFIG_NO_BREAK_ITERATION

#include "unicode/uobject.h"
#include "unicode/unistr.h"
#include "unicode/chariter.h"
#include "unicode/brkiter.h"
#include "unicode/usearch.h"

/**
* @stable ICU 2.0
*/
struct USearch;
/**
* @stable ICU 2.0
*/
typedef struct USearch USearch;

U_NAMESPACE_BEGIN

/**
 *
 * <tt>SearchIterator</tt> is an abstract base class that provides 
 * methods to search for a pattern within a text string. Instances of
 * <tt>SearchIterator</tt> maintain a current position and scans over the 
 * target text, returning the indices the pattern is matched and the length 
 * of each match.
 * <p>
 * <tt>SearchIterator</tt> defines a protocol for text searching. 
 * Subclasses provide concrete implementations of various search algorithms. 
 * For example, <tt>StringSearch</tt> implements language-sensitive pattern 
 * matching based on the comparison rules defined in a 
 * <tt>RuleBasedCollator</tt> object. 
 * <p> 
 * Other options for searching includes using a BreakIterator to restrict 
 * the points at which matches are detected.
 * <p>
 * <tt>SearchIterator</tt> provides an API that is similar to that of
 * other text iteration classes such as <tt>BreakIterator</tt>. Using 
 * this class, it is easy to scan through text looking for all occurances of 
 * a given pattern. The following example uses a <tt>StringSearch</tt> 
 * object to find all instances of "fox" in the target string. Any other 
 * subclass of <tt>SearchIterator</tt> can be used in an identical 
 * manner.
 * <pre><code>
 * UnicodeString target("The quick brown fox jumped over the lazy fox");
 * UnicodeString pattern("fox");
 *
 * SearchIterator *iter  = new StringSearch(pattern, target);
 * UErrorCode      error = U_ZERO_ERROR;
 * for (int pos = iter->first(error); pos != USEARCH_DONE; 
 *                               pos = iter->next(error)) {
 *     printf("Found match at %d pos, length is %d\n", pos, 
 *                                             iter.getMatchLength());
 * }
 * </code></pre>
 *
 * @see StringSearch
 * @see RuleBasedCollator
 */
class U_I18N_API SearchIterator : public UObject {

public:

    // public constructors and destructors -------------------------------

    /** 
    * Copy constructor that creates a SearchIterator instance with the same 
    * behavior, and iterating over the same text. 
    * @param other the SearchIterator instance to be copied.
    * @stable ICU 2.0
    */
    SearchIterator(const SearchIterator &other);

    /**
     * Destructor. Cleans up the search iterator data struct.
     * @stable ICU 2.0
     */
    virtual ~SearchIterator();

    // public get and set methods ----------------------------------------

    /**
     * Sets the index to point to the given position, and clears any state 
     * that's affected.
     * <p>
     * This method takes the argument index and sets the position in the text 
     * string accordingly without checking if the index is pointing to a 
     * valid starting point to begin searching. 
     * @param position within the text to be set. If position is less
     *             than or greater than the text range for searching, 
     *          an U_INDEX_OUTOFBOUNDS_ERROR will be returned
     * @param status for errors if it occurs
     * @stable ICU 2.0
     */
    virtual void setOffset(int32_t position, UErrorCode &status) = 0;

    /**
     * Return the current index in the text being searched.
     * If the iteration has gone past the end of the text
     * (or past the beginning for a backwards search), USEARCH_DONE
     * is returned.
     * @return current index in the text being searched.
     * @stable ICU 2.0
     */
    virtual int32_t getOffset(void) const = 0;

    /**
    * Sets the text searching attributes located in the enum 
    * USearchAttribute with values from the enum USearchAttributeValue.
    * USEARCH_DEFAULT can be used for all attributes for resetting.
    * @param attribute text attribute (enum USearchAttribute) to be set
    * @param value text attribute value
    * @param status for errors if it occurs
    * @stable ICU 2.0
    */
    void setAttribute(USearchAttribute       attribute,
                      USearchAttributeValue  value,
                      UErrorCode            &status);

    /**    
    * Gets the text searching attributes
    * @param attribute text attribute (enum USearchAttribute) to be retrieve
    * @return text attribute value
    * @stable ICU 2.0
    */
    USearchAttributeValue getAttribute(USearchAttribute  attribute) const;
    
    /**
    * Returns the index to the match in the text string that was searched.
    * This call returns a valid result only after a successful call to 
    * <tt>first</tt>, <tt>next</tt>, <tt>previous</tt>, or <tt>last</tt>.
    * Just after construction, or after a searching method returns 
    * <tt>USEARCH_DONE</tt>, this method will return <tt>USEARCH_DONE</tt>.
    * <p>
    * Use getMatchedLength to get the matched string length.
    * @return index of a substring within the text string that is being 
    *         searched.
    * @see #first
    * @see #next
    * @see #previous
    * @see #last
    * @stable ICU 2.0
    */
    int32_t getMatchedStart(void) const;

    /**
     * Returns the length of text in the string which matches the search 
     * pattern. This call returns a valid result only after a successful call 
     * to <tt>first</tt>, <tt>next</tt>, <tt>previous</tt>, or <tt>last</tt>.
     * Just after construction, or after a searching method returns 
     * <tt>USEARCH_DONE</tt>, this method will return 0.
     * @return The length of the match in the target text, or 0 if there
     *         is no match currently.
     * @see #first
     * @see #next
     * @see #previous
     * @see #last
     * @stable ICU 2.0
     */
    int32_t getMatchedLength(void) const;
    
    /**
     * Returns the text that was matched by the most recent call to 
     * <tt>first</tt>, <tt>next</tt>, <tt>previous</tt>, or <tt>last</tt>.
     * If the iterator is not pointing at a valid match (e.g. just after 
     * construction or after <tt>USEARCH_DONE</tt> has been returned, 
     * returns an empty string. 
     * @param result stores the matched string or an empty string if a match
     *        is not found.
     * @see #first
     * @see #next
     * @see #previous
     * @see #last
     * @stable ICU 2.0
     */
    void getMatchedText(UnicodeString &result) const;
    
    /**
     * Set the BreakIterator that will be used to restrict the points
     * at which matches are detected. The user is responsible for deleting 
     * the breakiterator.
     * @param breakiter A BreakIterator that will be used to restrict the 
     *                points at which matches are detected. If a match is 
     *                found, but the match's start or end index is not a 
     *                boundary as determined by the <tt>BreakIterator</tt>, 
     *                the match will be rejected and another will be searched 
     *                for. If this parameter is <tt>NULL</tt>, no break
     *                detection is attempted.
     * @param status for errors if it occurs
     * @see BreakIterator
     * @stable ICU 2.0
     */
    void setBreakIterator(BreakIterator *breakiter, UErrorCode &status);
    
    /**
     * Returns the BreakIterator that is used to restrict the points at 
     * which matches are detected.  This will be the same object that was 
     * passed to the constructor or to <tt>setBreakIterator</tt>.
     * Note that <tt>NULL</tt> is a legal value; it means that break
     * detection should not be attempted.
     * @return BreakIterator used to restrict matchings.
     * @see #setBreakIterator
     * @stable ICU 2.0
     */
    const BreakIterator * getBreakIterator(void) const;

    /**
     * Set the string text to be searched. Text iteration will hence begin at 
     * the start of the text string. This method is useful if you want to 
     * re-use an iterator to search for the same pattern within a different 
     * body of text. The user is responsible for deleting the text.
     * @param text string to be searched.
     * @param status for errors. If the text length is 0, 
     *        an U_ILLEGAL_ARGUMENT_ERROR is returned.
     * @stable ICU 2.0
     */
    virtual void setText(const UnicodeString &text, UErrorCode &status);    

    /**
     * Set the string text to be searched. Text iteration will hence begin at 
     * the start of the text string. This method is useful if you want to 
     * re-use an iterator to search for the same pattern within a different 
     * body of text.
     * <p>
     * Note: No parsing of the text within the <tt>CharacterIterator</tt> 
     * will be done during searching for this version. The block of text 
     * in <tt>CharacterIterator</tt> will be used as it is.
     * The user is responsible for deleting the text.
     * @param text string iterator to be searched.
     * @param status for errors if any. If the text length is 0 then an 
     *        U_ILLEGAL_ARGUMENT_ERROR is returned.
     * @stable ICU 2.0
     */
    virtual void setText(CharacterIterator &text, UErrorCode &status);
    
    /**
     * Return the string text to be searched.
     * @return text string to be searched.
     * @stable ICU 2.0
     */
    const UnicodeString & getText(void) const;

    // operator overloading ----------------------------------------------

    /**
     * Equality operator. 
     * @param that SearchIterator instance to be compared.
     * @return TRUE if both BreakIterators are of the same class, have the 
     *         same behavior, terates over the same text and have the same
     *         attributes. FALSE otherwise.
     * @stable ICU 2.0
     */
    virtual UBool operator==(const SearchIterator &that) const;

    /**
     * Not-equal operator. 
     * @param that SearchIterator instance to be compared.
     * @return FALSE if operator== returns TRUE, and vice versa.
     * @stable ICU 2.0
     */
    UBool operator!=(const SearchIterator &that) const;

    // public methods ----------------------------------------------------

    /**
     * Returns a copy of SearchIterator with the same behavior, and 
     * iterating over the same text, as this one. Note that all data will be
     * replicated, except for the text string to be searched.
     * @return cloned object
     * @stable ICU 2.0
     */
    virtual SearchIterator* safeClone(void) const = 0;

    /**
     * Returns the first index at which the string text matches the search 
     * pattern. The iterator is adjusted so that its current index (as 
     * returned by <tt>getOffset</tt>) is the match position if one 
     * was found.
     * If a match is not found, <tt>USEARCH_DONE</tt> will be returned and
     * the iterator will be adjusted to the index USEARCH_DONE
     * @param  status for errors if it occurs
     * @return The character index of the first match, or 
     *         <tt>USEARCH_DONE</tt> if there are no matches.
     * @see #getOffset
     * @stable ICU 2.0
     */
    int32_t first(UErrorCode &status);

    /**
     * Returns the first index equal or greater than <tt>position</tt> at which the 
     * string text matches the search pattern. The iterator is adjusted so 
     * that its current index (as returned by <tt>getOffset</tt>) is the 
     * match position if one was found.
     * If a match is not found, <tt>USEARCH_DONE</tt> will be returned and the
     * iterator will be adjusted to the index <tt>USEARCH_DONE</tt>.
     * @param  position where search if to start from. If position is less
     *             than or greater than the text range for searching, 
     *          an U_INDEX_OUTOFBOUNDS_ERROR will be returned
     * @param  status for errors if it occurs
     * @return The character index of the first match following 
     *         <tt>position</tt>, or <tt>USEARCH_DONE</tt> if there are no 
     *         matches.
     * @see #getOffset
     * @stable ICU 2.0
     */
    int32_t following(int32_t position, UErrorCode &status);
    
    /**
     * Returns the last index in the target text at which it matches the 
     * search pattern. The iterator is adjusted so that its current index 
     * (as returned by <tt>getOffset</tt>) is the match position if one was 
     * found.
     * If a match is not found, <tt>USEARCH_DONE</tt> will be returned and
     * the iterator will be adjusted to the index USEARCH_DONE.
     * @param  status for errors if it occurs
     * @return The index of the first match, or <tt>USEARCH_DONE</tt> if 
     *         there are no matches.
     * @see #getOffset
     * @stable ICU 2.0
     */
    int32_t last(UErrorCode &status);

    /**
     * Returns the first index less than <tt>position</tt> at which the string 
     * text matches the search pattern. The iterator is adjusted so that its 
     * current index (as returned by <tt>getOffset</tt>) is the match 
     * position if one was found. If a match is not found, 
     * <tt>USEARCH_DONE</tt> will be returned and the iterator will be 
     * adjusted to the index USEARCH_DONE
     * <p>
     * When <tt>USEARCH_OVERLAP</tt> option is off, the last index of the
     * result match is always less than <tt>position</tt>.
     * When <tt>USERARCH_OVERLAP</tt> is on, the result match may span across
     * <tt>position</tt>.
     *
     * @param  position where search is to start from. If position is less
     *             than or greater than the text range for searching, 
     *          an U_INDEX_OUTOFBOUNDS_ERROR will be returned
     * @param  status for errors if it occurs
     * @return The character index of the first match preceding 
     *         <tt>position</tt>, or <tt>USEARCH_DONE</tt> if there are 
     *         no matches.
     * @see #getOffset
     * @stable ICU 2.0
     */
    int32_t preceding(int32_t position, UErrorCode &status);

    /**
     * Returns the index of the next point at which the text matches the
     * search pattern, starting from the current position
     * The iterator is adjusted so that its current index (as returned by 
     * <tt>getOffset</tt>) is the match position if one was found.
     * If a match is not found, <tt>USEARCH_DONE</tt> will be returned and
     * the iterator will be adjusted to a position after the end of the text 
     * string.
     * @param  status for errors if it occurs
     * @return The index of the next match after the current position,
     *          or <tt>USEARCH_DONE</tt> if there are no more matches.
     * @see #getOffset
     * @stable ICU 2.0
     */
     int32_t next(UErrorCode &status);

    /**
     * Returns the index of the previous point at which the string text 
     * matches the search pattern, starting at the current position.
     * The iterator is adjusted so that its current index (as returned by 
     * <tt>getOffset</tt>) is the match position if one was found.
     * If a match is not found, <tt>USEARCH_DONE</tt> will be returned and
     * the iterator will be adjusted to the index USEARCH_DONE
     * @param  status for errors if it occurs
     * @return The index of the previous match before the current position,
     *          or <tt>USEARCH_DONE</tt> if there are no more matches.
     * @see #getOffset
     * @stable ICU 2.0
     */
    int32_t previous(UErrorCode &status);

    /** 
    * Resets the iteration.
    * Search will begin at the start of the text string if a forward 
    * iteration is initiated before a backwards iteration. Otherwise if a 
    * backwards iteration is initiated before a forwards iteration, the 
    * search will begin at the end of the text string.    
    * @stable ICU 2.0
    */
    virtual void reset();

protected:
    // protected data members ---------------------------------------------

    /**
    * C search data struct
    * @stable ICU 2.0
    */
    USearch *m_search_;

    /**
    * Break iterator.
    * Currently the C++ breakiterator does not have getRules etc to reproduce
    * another in C. Hence we keep the original around and do the verification
    * at the end of the match. The user is responsible for deleting this
    * break iterator.
    * @stable ICU 2.0
    */
    BreakIterator *m_breakiterator_;
    
    /**
    * Unicode string version of the search text
    * @stable ICU 2.0
    */
    UnicodeString  m_text_;

    // protected constructors and destructors -----------------------------

    /**
    * Default constructor.
    * Initializes data to the default values.
    * @stable ICU 2.0
    */
    SearchIterator();

    /**
     * Constructor for use by subclasses.
     * @param text The target text to be searched.
     * @param breakiter A {@link BreakIterator} that is used to restrict the 
     *                points at which matches are detected. If 
     *                <tt>handleNext</tt> or <tt>handlePrev</tt> finds a 
     *                match, but the match's start or end index is not a 
     *                boundary as determined by the <tt>BreakIterator</tt>, 
     *                the match is rejected and <tt>handleNext</tt> or 
     *                <tt>handlePrev</tt> is called again. If this parameter 
     *                is <tt>NULL</tt>, no break detection is attempted.  
     * @see #handleNext
     * @see #handlePrev
     * @stable ICU 2.0
     */
    SearchIterator(const UnicodeString &text, 
                         BreakIterator *breakiter = NULL);

    /**
     * Constructor for use by subclasses.
     * <p>
     * Note: No parsing of the text within the <tt>CharacterIterator</tt> 
     * will be done during searching for this version. The block of text 
     * in <tt>CharacterIterator</tt> will be used as it is.
     * @param text The target text to be searched.
     * @param breakiter A {@link BreakIterator} that is used to restrict the 
     *                points at which matches are detected. If 
     *                <tt>handleNext</tt> or <tt>handlePrev</tt> finds a 
     *                match, but the match's start or end index is not a 
     *                boundary as determined by the <tt>BreakIterator</tt>, 
     *                the match is rejected and <tt>handleNext</tt> or 
     *                <tt>handlePrev</tt> is called again. If this parameter 
     *                is <tt>NULL</tt>, no break detection is attempted.
     * @see #handleNext
     * @see #handlePrev
     * @stable ICU 2.0
     */
    SearchIterator(CharacterIterator &text, BreakIterator *breakiter = NULL);

    // protected methods --------------------------------------------------

    /**
     * Assignment operator. Sets this iterator to have the same behavior,
     * and iterate over the same text, as the one passed in.
     * @param that instance to be copied.
     * @stable ICU 2.0
     */
    SearchIterator & operator=(const SearchIterator &that);

    /**
     * Abstract method which subclasses override to provide the mechanism
     * for finding the next match in the target text. This allows different
     * subclasses to provide different search algorithms.
     * <p>
     * If a match is found, the implementation should return the index at
     * which the match starts and should call 
     * <tt>setMatchLength</tt> with the number of characters 
     * in the target text that make up the match. If no match is found, the 
     * method should return USEARCH_DONE.
     * <p>
     * @param position The index in the target text at which the search 
     *                 should start.
     * @param status for error codes if it occurs.
     * @return index at which the match starts, else if match is not found 
     *         USEARCH_DONE is returned
     * @see #setMatchLength
     * @stable ICU 2.0
     */
    virtual int32_t handleNext(int32_t position, UErrorCode &status) 
                                                                         = 0;

    /**
     * Abstract method which subclasses override to provide the mechanism for
     * finding the previous match in the target text. This allows different
     * subclasses to provide different search algorithms.
     * <p>
     * If a match is found, the implementation should return the index at
     * which the match starts and should call 
     * <tt>setMatchLength</tt> with the number of characters 
     * in the target text that make up the match. If no match is found, the 
     * method should return USEARCH_DONE.
     * <p>
     * @param position The index in the target text at which the search 
     *                 should start.
     * @param status for error codes if it occurs.
     * @return index at which the match starts, else if match is not found 
     *         USEARCH_DONE is returned
     * @see #setMatchLength
     * @stable ICU 2.0
     */
     virtual int32_t handlePrev(int32_t position, UErrorCode &status) 
                                                                         = 0;

    /**
     * Sets the length of the currently matched string in the text string to
     * be searched.
     * Subclasses' <tt>handleNext</tt> and <tt>handlePrev</tt>
     * methods should call this when they find a match in the target text.
     * @param length length of the matched text.
     * @see #handleNext
     * @see #handlePrev
     * @stable ICU 2.0
     */
    virtual void setMatchLength(int32_t length);

    /**
     * Sets the offset of the currently matched string in the text string to
     * be searched.
     * Subclasses' <tt>handleNext</tt> and <tt>handlePrev</tt>
     * methods should call this when they find a match in the target text.
     * @param position start offset of the matched text.
     * @see #handleNext
     * @see #handlePrev
     * @stable ICU 2.0
     */
    virtual void setMatchStart(int32_t position);

    /**
    * sets match not found 
    * @stable ICU 2.0
    */
    void setMatchNotFound();
};

inline UBool SearchIterator::operator!=(const SearchIterator &that) const
{
   return !operator==(that); 
}
U_NAMESPACE_END

#endif /* #if !UCONFIG_NO_COLLATION */

#endif