/usr/include/thunderbird/unicode/coleitr.h is in thunderbird-dev 1:52.8.0-1~deb8u1.
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 | // Copyright (C) 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
******************************************************************************
* Copyright (C) 1997-2014, International Business Machines
* Corporation and others. All Rights Reserved.
******************************************************************************
*/
/**
* \file
* \brief C++ API: Collation Element Iterator.
*/
/**
* File coleitr.h
*
* Created by: Helena Shih
*
* Modification History:
*
* Date Name Description
*
* 8/18/97 helena Added internal API documentation.
* 08/03/98 erm Synched with 1.2 version CollationElementIterator.java
* 12/10/99 aliu Ported Thai collation support from Java.
* 01/25/01 swquek Modified into a C++ wrapper calling C APIs (ucoliter.h)
* 02/19/01 swquek Removed CollationElementsIterator() since it is
* private constructor and no calls are made to it
* 2012-2014 markus Rewritten in C++ again.
*/
#ifndef COLEITR_H
#define COLEITR_H
#include "unicode/utypes.h"
#if !UCONFIG_NO_COLLATION
#include "unicode/unistr.h"
#include "unicode/uobject.h"
struct UCollationElements;
struct UHashtable;
U_NAMESPACE_BEGIN
struct CollationData;
class CollationIterator;
class RuleBasedCollator;
class UCollationPCE;
class UVector32;
/**
* The CollationElementIterator class is used as an iterator to walk through
* each character of an international string. Use the iterator to return the
* ordering priority of the positioned character. The ordering priority of a
* character, which we refer to as a key, defines how a character is collated in
* the given collation object.
* For example, consider the following in Slovak and in traditional Spanish collation:
* <pre>
* "ca" -> the first key is key('c') and second key is key('a').
* "cha" -> the first key is key('ch') and second key is key('a').</pre>
* And in German phonebook collation,
* <pre> \htmlonly "æb"-> the first key is key('a'), the second key is key('e'), and
* the third key is key('b'). \endhtmlonly </pre>
* The key of a character, is an integer composed of primary order(short),
* secondary order(char), and tertiary order(char). Java strictly defines the
* size and signedness of its primitive data types. Therefore, the static
* functions primaryOrder(), secondaryOrder(), and tertiaryOrder() return
* int32_t to ensure the correctness of the key value.
* <p>Example of the iterator usage: (without error checking)
* <pre>
* \code
* void CollationElementIterator_Example()
* {
* UnicodeString str = "This is a test";
* UErrorCode success = U_ZERO_ERROR;
* RuleBasedCollator* rbc =
* (RuleBasedCollator*) RuleBasedCollator::createInstance(success);
* CollationElementIterator* c =
* rbc->createCollationElementIterator( str );
* int32_t order = c->next(success);
* c->reset();
* order = c->previous(success);
* delete c;
* delete rbc;
* }
* \endcode
* </pre>
* <p>
* The method next() returns the collation order of the next character based on
* the comparison level of the collator. The method previous() returns the
* collation order of the previous character based on the comparison level of
* the collator. The Collation Element Iterator moves only in one direction
* between calls to reset(), setOffset(), or setText(). That is, next()
* and previous() can not be inter-used. Whenever previous() is to be called after
* next() or vice versa, reset(), setOffset() or setText() has to be called first
* to reset the status, shifting pointers to either the end or the start of
* the string (reset() or setText()), or the specified position (setOffset()).
* Hence at the next call of next() or previous(), the first or last collation order,
* or collation order at the spefcifieid position will be returned. If a change of
* direction is done without one of these calls, the result is undefined.
* <p>
* The result of a forward iterate (next()) and reversed result of the backward
* iterate (previous()) on the same string are equivalent, if collation orders
* with the value 0 are ignored.
* Character based on the comparison level of the collator. A collation order
* consists of primary order, secondary order and tertiary order. The data
* type of the collation order is <strong>int32_t</strong>.
*
* Note, CollationElementIterator should not be subclassed.
* @see Collator
* @see RuleBasedCollator
* @version 1.8 Jan 16 2001
*/
class U_I18N_API CollationElementIterator U_FINAL : public UObject {
public:
// CollationElementIterator public data member ------------------------------
enum {
/**
* NULLORDER indicates that an error has occured while processing
* @stable ICU 2.0
*/
NULLORDER = (int32_t)0xffffffff
};
// CollationElementIterator public constructor/destructor -------------------
/**
* Copy constructor.
*
* @param other the object to be copied from
* @stable ICU 2.0
*/
CollationElementIterator(const CollationElementIterator& other);
/**
* Destructor
* @stable ICU 2.0
*/
virtual ~CollationElementIterator();
// CollationElementIterator public methods ----------------------------------
/**
* Returns true if "other" is the same as "this"
*
* @param other the object to be compared
* @return true if "other" is the same as "this"
* @stable ICU 2.0
*/
UBool operator==(const CollationElementIterator& other) const;
/**
* Returns true if "other" is not the same as "this".
*
* @param other the object to be compared
* @return true if "other" is not the same as "this"
* @stable ICU 2.0
*/
UBool operator!=(const CollationElementIterator& other) const;
/**
* Resets the cursor to the beginning of the string.
* @stable ICU 2.0
*/
void reset(void);
/**
* Gets the ordering priority of the next character in the string.
* @param status the error code status.
* @return the next character's ordering. otherwise returns NULLORDER if an
* error has occured or if the end of string has been reached
* @stable ICU 2.0
*/
int32_t next(UErrorCode& status);
/**
* Get the ordering priority of the previous collation element in the string.
* @param status the error code status.
* @return the previous element's ordering. otherwise returns NULLORDER if an
* error has occured or if the start of string has been reached
* @stable ICU 2.0
*/
int32_t previous(UErrorCode& status);
/**
* Gets the primary order of a collation order.
* @param order the collation order
* @return the primary order of a collation order.
* @stable ICU 2.0
*/
static inline int32_t primaryOrder(int32_t order);
/**
* Gets the secondary order of a collation order.
* @param order the collation order
* @return the secondary order of a collation order.
* @stable ICU 2.0
*/
static inline int32_t secondaryOrder(int32_t order);
/**
* Gets the tertiary order of a collation order.
* @param order the collation order
* @return the tertiary order of a collation order.
* @stable ICU 2.0
*/
static inline int32_t tertiaryOrder(int32_t order);
/**
* Return the maximum length of any expansion sequences that end with the
* specified comparison order.
* @param order a collation order returned by previous or next.
* @return maximum size of the expansion sequences ending with the collation
* element or 1 if collation element does not occur at the end of any
* expansion sequence
* @stable ICU 2.0
*/
int32_t getMaxExpansion(int32_t order) const;
/**
* Gets the comparison order in the desired strength. Ignore the other
* differences.
* @param order The order value
* @stable ICU 2.0
*/
int32_t strengthOrder(int32_t order) const;
/**
* Sets the source string.
* @param str the source string.
* @param status the error code status.
* @stable ICU 2.0
*/
void setText(const UnicodeString& str, UErrorCode& status);
/**
* Sets the source string.
* @param str the source character iterator.
* @param status the error code status.
* @stable ICU 2.0
*/
void setText(CharacterIterator& str, UErrorCode& status);
/**
* Checks if a comparison order is ignorable.
* @param order the collation order.
* @return TRUE if a character is ignorable, FALSE otherwise.
* @stable ICU 2.0
*/
static inline UBool isIgnorable(int32_t order);
/**
* Gets the offset of the currently processed character in the source string.
* @return the offset of the character.
* @stable ICU 2.0
*/
int32_t getOffset(void) const;
/**
* Sets the offset of the currently processed character in the source string.
* @param newOffset the new offset.
* @param status the error code status.
* @return the offset of the character.
* @stable ICU 2.0
*/
void setOffset(int32_t newOffset, UErrorCode& status);
/**
* ICU "poor man's RTTI", returns a UClassID for the actual class.
*
* @stable ICU 2.2
*/
virtual UClassID getDynamicClassID() const;
/**
* ICU "poor man's RTTI", returns a UClassID for this class.
*
* @stable ICU 2.2
*/
static UClassID U_EXPORT2 getStaticClassID();
#ifndef U_HIDE_INTERNAL_API
/** @internal */
static inline CollationElementIterator *fromUCollationElements(UCollationElements *uc) {
return reinterpret_cast<CollationElementIterator *>(uc);
}
/** @internal */
static inline const CollationElementIterator *fromUCollationElements(const UCollationElements *uc) {
return reinterpret_cast<const CollationElementIterator *>(uc);
}
/** @internal */
inline UCollationElements *toUCollationElements() {
return reinterpret_cast<UCollationElements *>(this);
}
/** @internal */
inline const UCollationElements *toUCollationElements() const {
return reinterpret_cast<const UCollationElements *>(this);
}
#endif // U_HIDE_INTERNAL_API
private:
friend class RuleBasedCollator;
friend class UCollationPCE;
/**
* CollationElementIterator constructor. This takes the source string and the
* collation object. The cursor will walk thru the source string based on the
* predefined collation rules. If the source string is empty, NULLORDER will
* be returned on the calls to next().
* @param sourceText the source string.
* @param order the collation object.
* @param status the error code status.
*/
CollationElementIterator(const UnicodeString& sourceText,
const RuleBasedCollator* order, UErrorCode& status);
// Note: The constructors should take settings & tailoring, not a collator,
// to avoid circular dependencies.
// However, for operator==() we would need to be able to compare tailoring data for equality
// without making CollationData or CollationTailoring depend on TailoredSet.
// (See the implementation of RuleBasedCollator::operator==().)
// That might require creating an intermediate class that would be used
// by both CollationElementIterator and RuleBasedCollator
// but only contain the part of RBC== related to data and rules.
/**
* CollationElementIterator constructor. This takes the source string and the
* collation object. The cursor will walk thru the source string based on the
* predefined collation rules. If the source string is empty, NULLORDER will
* be returned on the calls to next().
* @param sourceText the source string.
* @param order the collation object.
* @param status the error code status.
*/
CollationElementIterator(const CharacterIterator& sourceText,
const RuleBasedCollator* order, UErrorCode& status);
/**
* Assignment operator
*
* @param other the object to be copied
*/
const CollationElementIterator&
operator=(const CollationElementIterator& other);
CollationElementIterator(); // default constructor not implemented
/** Normalizes dir_=1 (just after setOffset()) to dir_=0 (just after reset()). */
inline int8_t normalizeDir() const { return dir_ == 1 ? 0 : dir_; }
static UHashtable *computeMaxExpansions(const CollationData *data, UErrorCode &errorCode);
static int32_t getMaxExpansion(const UHashtable *maxExpansions, int32_t order);
// CollationElementIterator private data members ----------------------------
CollationIterator *iter_; // owned
const RuleBasedCollator *rbc_; // aliased
uint32_t otherHalf_;
/**
* <0: backwards; 0: just after reset() (previous() begins from end);
* 1: just after setOffset(); >1: forward
*/
int8_t dir_;
/**
* Stores offsets from expansions and from unsafe-backwards iteration,
* so that getOffset() returns intermediate offsets for the CEs
* that are consistent with forward iteration.
*/
UVector32 *offsets_;
UnicodeString string_;
};
// CollationElementIterator inline method definitions --------------------------
inline int32_t CollationElementIterator::primaryOrder(int32_t order)
{
return (order >> 16) & 0xffff;
}
inline int32_t CollationElementIterator::secondaryOrder(int32_t order)
{
return (order >> 8) & 0xff;
}
inline int32_t CollationElementIterator::tertiaryOrder(int32_t order)
{
return order & 0xff;
}
inline UBool CollationElementIterator::isIgnorable(int32_t order)
{
return (order & 0xffff0000) == 0;
}
U_NAMESPACE_END
#endif /* #if !UCONFIG_NO_COLLATION */
#endif
|