FM / unicode

/usr/include/unicode

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alphaindex.h	27158	0644	edit dl rm
appendable.h	8739	0644	edit dl rm
basictz.h	10163	0644	edit dl rm
brkiter.h	28478	0644	edit dl rm
bytestream.h	11013	0644	edit dl rm
bytestrie.h	21268	0644	edit dl rm
bytestriebuilder.h	7640	0644	edit dl rm
calendar.h	108424	0644	edit dl rm
caniter.h	7621	0644	edit dl rm
casemap.h	25933	0644	edit dl rm
char16ptr.h	7393	0644	edit dl rm
chariter.h	24638	0644	edit dl rm
choicfmt.h	24544	0644	edit dl rm
coleitr.h	14102	0644	edit dl rm
coll.h	57615	0644	edit dl rm
compactdecimalformat.h	7047	0644	edit dl rm
curramt.h	3869	0644	edit dl rm
currpinf.h	7479	0644	edit dl rm
currunit.h	4112	0644	edit dl rm
datefmt.h	41690	0644	edit dl rm
dbbi.h	1223	0644	edit dl rm
dcfmtsym.h	21101	0644	edit dl rm
decimfmt.h	89676	0644	edit dl rm
docmain.h	7380	0644	edit dl rm
dtfmtsym.h	39126	0644	edit dl rm
dtintrv.h	3935	0644	edit dl rm
dtitvfmt.h	50448	0644	edit dl rm
dtitvinf.h	19072	0644	edit dl rm
dtptngen.h	26692	0644	edit dl rm
dtrule.h	8898	0644	edit dl rm
edits.h	21237	0644	edit dl rm
enumset.h	2130	0644	edit dl rm
errorcode.h	4956	0644	edit dl rm
fieldpos.h	8906	0644	edit dl rm
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fmtable.h	25020	0644	edit dl rm
format.h	12802	0644	edit dl rm
formattedvalue.h	9987	0644	edit dl rm
fpositer.h	3107	0644	edit dl rm
gender.h	3408	0644	edit dl rm
gregocal.h	32642	0644	edit dl rm
icudataver.h	1049	0644	edit dl rm
icuplug.h	12109	0644	edit dl rm
idna.h	13000	0644	edit dl rm
listformatter.h	9004	0644	edit dl rm
localebuilder.h	11350	0644	edit dl rm
localematcher.h	27467	0644	edit dl rm
localpointer.h	19825	0644	edit dl rm
locdspnm.h	7292	0644	edit dl rm
locid.h	48804	0644	edit dl rm
measfmt.h	11690	0644	edit dl rm
measunit.h	107613	0644	edit dl rm
measure.h	4431	0644	edit dl rm
messagepattern.h	34517	0644	edit dl rm
msgfmt.h	45278	0644	edit dl rm
normalizer2.h	34466	0644	edit dl rm
normlzr.h	31690	0644	edit dl rm
nounit.h	2305	0644	edit dl rm
numberformatter.h	94505	0644	edit dl rm
numberrangeformatter.h	25790	0644	edit dl rm
numfmt.h	51034	0644	edit dl rm
numsys.h	7509	0644	edit dl rm
parseerr.h	3155	0644	edit dl rm
parsepos.h	5699	0644	edit dl rm
platform.h	28768	0644	edit dl rm
plurfmt.h	25847	0644	edit dl rm
plurrule.h	21316	0644	edit dl rm
ptypes.h	3577	0644	edit dl rm
putil.h	6471	0644	edit dl rm
rbbi.h	28413	0644	edit dl rm
rbnf.h	50021	0644	edit dl rm
rbtz.h	16210	0644	edit dl rm
regex.h	86385	0644	edit dl rm
region.h	9402	0644	edit dl rm
reldatefmt.h	22751	0644	edit dl rm
rep.h	9599	0644	edit dl rm
resbund.h	18513	0644	edit dl rm
schriter.h	6511	0644	edit dl rm
scientificnumberformatter.h	6589	0644	edit dl rm
search.h	22755	0644	edit dl rm
selfmt.h	14686	0644	edit dl rm
simpleformatter.h	12888	0644	edit dl rm
simpletz.h	46798	0644	edit dl rm
smpdtfmt.h	72778	0644	edit dl rm
sortkey.h	11452	0644	edit dl rm
std_string.h	1076	0644	edit dl rm
strenum.h	10157	0644	edit dl rm
stringoptions.h	5926	0644	edit dl rm
stringpiece.h	10287	0644	edit dl rm
stringtriebuilder.h	15842	0644	edit dl rm
stsearch.h	21926	0644	edit dl rm
symtable.h	4374	0644	edit dl rm
tblcoll.h	37801	0644	edit dl rm
timezone.h	44858	0644	edit dl rm
tmunit.h	3479	0644	edit dl rm
tmutamt.h	5029	0644	edit dl rm
tmutfmt.h	7602	0644	edit dl rm
translit.h	67397	0644	edit dl rm
tzfmt.h	43961	0644	edit dl rm
tznames.h	17251	0644	edit dl rm
tzrule.h	36450	0644	edit dl rm
tztrans.h	6278	0644	edit dl rm
ubidi.h	91759	0644	edit dl rm
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ubrk.h	25043	0644	edit dl rm
ucal.h	62463	0644	edit dl rm
ucasemap.h	15579	0644	edit dl rm
ucat.h	5478	0644	edit dl rm
uchar.h	148111	0644	edit dl rm
ucharstrie.h	23066	0644	edit dl rm
ucharstriebuilder.h	7645	0644	edit dl rm
uchriter.h	13747	0644	edit dl rm
uclean.h	11468	0644	edit dl rm
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ucnv_cb.h	6738	0644	edit dl rm
ucnv_err.h	21481	0644	edit dl rm
ucol.h	62987	0644	edit dl rm
ucoleitr.h	10056	0644	edit dl rm
uconfig.h	12356	0644	edit dl rm
ucpmap.h	5663	0644	edit dl rm
ucptrie.h	23044	0644	edit dl rm
ucsdet.h	15043	0644	edit dl rm
ucurr.h	17122	0644	edit dl rm
udat.h	63902	0644	edit dl rm
udata.h	16004	0644	edit dl rm
udateintervalformat.h	12218	0644	edit dl rm
udatpg.h	27405	0644	edit dl rm
udisplaycontext.h	6084	0644	edit dl rm
uenum.h	7981	0644	edit dl rm
ufieldpositer.h	4513	0644	edit dl rm
uformattable.h	11233	0644	edit dl rm
uformattedvalue.h	12600	0644	edit dl rm
ugender.h	2106	0644	edit dl rm
uidna.h	34229	0644	edit dl rm
uiter.h	23299	0644	edit dl rm
uldnames.h	10733	0644	edit dl rm
ulistformatter.h	11043	0644	edit dl rm
uloc.h	55936	0644	edit dl rm
ulocdata.h	11572	0644	edit dl rm
umachine.h	16439	0644	edit dl rm
umisc.h	1365	0644	edit dl rm
umsg.h	24832	0644	edit dl rm
umutablecptrie.h	8490	0644	edit dl rm
unifilt.h	4091	0644	edit dl rm
unifunct.h	4151	0644	edit dl rm
unimatch.h	6244	0644	edit dl rm
unirepl.h	3464	0644	edit dl rm
uniset.h	68108	0644	edit dl rm
unistr.h	174627	0644	edit dl rm
unorm.h	21042	0644	edit dl rm
unorm2.h	25269	0644	edit dl rm
unum.h	56269	0644	edit dl rm
unumberformatter.h	31177	0644	edit dl rm
unumberrangeformatter.h	15737	0644	edit dl rm
unumsys.h	7430	0644	edit dl rm
uobject.h	10934	0644	edit dl rm
upluralrules.h	8997	0644	edit dl rm
uregex.h	73719	0644	edit dl rm
uregion.h	10047	0644	edit dl rm
ureldatefmt.h	17448	0644	edit dl rm
urename.h	137853	0644	edit dl rm
urep.h	5507	0644	edit dl rm
ures.h	37418	0644	edit dl rm
uscript.h	28291	0644	edit dl rm
usearch.h	40153	0644	edit dl rm
uset.h	45503	0644	edit dl rm
usetiter.h	9910	0644	edit dl rm
ushape.h	18430	0644	edit dl rm
uspoof.h	67425	0644	edit dl rm
usprep.h	8382	0644	edit dl rm
ustdio.h	39482	0644	edit dl rm
ustream.h	1934	0644	edit dl rm
ustring.h	74096	0644	edit dl rm
ustringtrie.h	3224	0644	edit dl rm
utext.h	59471	0644	edit dl rm
utf.h	8057	0644	edit dl rm
utf8.h	31572	0644	edit dl rm
utf16.h	23910	0644	edit dl rm
utf32.h	763	0644	edit dl rm
utf_old.h	46929	0644	edit dl rm
utmscale.h	14107	0644	edit dl rm
utrace.h	17595	0644	edit dl rm
utrans.h	26157	0644	edit dl rm
utypes.h	31807	0644	edit dl rm
uvernum.h	6839	0644	edit dl rm
uversion.h	6137	0644	edit dl rm
vtzone.h	21303	0644	edit dl rm

Edit: /usr/include/unicode/stsearch.h (21926B)

// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
**********************************************************************
*   Copyright (C) 2001-2014 IBM and others. All rights reserved.
**********************************************************************
*   Date        Name        Description
*  03/22/2000   helena      Creation.
**********************************************************************
*/

#ifndef STSEARCH_H
#define STSEARCH_H

#include "unicode/utypes.h"

#if U_SHOW_CPLUSPLUS_API

/**
 * \file 
 * \brief C++ API: Service for searching text based on RuleBasedCollator.
 */
 
#if !UCONFIG_NO_COLLATION && !UCONFIG_NO_BREAK_ITERATION

#include "unicode/tblcoll.h"
#include "unicode/coleitr.h"
#include "unicode/search.h"

U_NAMESPACE_BEGIN

/** 
 *
 * <tt>StringSearch</tt> is a <tt>SearchIterator</tt> that provides
 * language-sensitive text searching based on the comparison rules defined
 * in a {@link RuleBasedCollator} object.
 * StringSearch ensures that language eccentricity can be
 * handled, e.g. for the German collator, characters &szlig; and SS will be matched
 * if case is chosen to be ignored.
 * See the <a href="https://htmlpreview.github.io/?https://github.com/unicode-org/icu-docs/blob/main/design/collation/ICU_collation_design.htm">
 * "ICU Collation Design Document"</a> for more information.
 * 
 * There are 2 match options for selection: 
 * Let S' be the sub-string of a text string S between the offsets start and
 * end [start, end].
 * 
 * A pattern string P matches a text string S at the offsets [start, end]
 * if
 * <pre> 
 * option 1. Some canonical equivalent of P matches some canonical equivalent
 * of S'
 * option 2. P matches S' and if P starts or ends with a combining mark,
 * there exists no non-ignorable combining mark before or after S?
 * in S respectively.
 * </pre>
 * Option 2. will be the default.
 * 
 * This search has APIs similar to that of other text iteration mechanisms 
 * such as the break iterators in <tt>BreakIterator</tt>. Using these 
 * APIs, it is easy to scan through text looking for all occurrences of 
 * a given pattern. This search iterator allows changing of direction by 
 * calling a <tt>reset</tt> followed by a <tt>next</tt> or <tt>previous</tt>.
 * Though a direction change can occur without calling <tt>reset</tt> first,
 * this operation comes with some speed penalty.
 * Match results in the forward direction will match the result matches in
 * the backwards direction in the reverse order
 * 
 * <tt>SearchIterator</tt> provides APIs to specify the starting position
 * within the text string to be searched, e.g. <tt>setOffset</tt>,
 * <tt>preceding</tt> and <tt>following</tt>. Since the
 * starting position will be set as it is specified, please take note that
 * there are some danger points which the search may render incorrect
 * results:
 * <ul>
 * <li> The midst of a substring that requires normalization.
 * <li> If the following match is to be found, the position should not be the
 * second character which requires to be swapped with the preceding
 * character. Vice versa, if the preceding match is to be found,
 * position to search from should not be the first character which
 * requires to be swapped with the next character. E.g certain Thai and
 * Lao characters require swapping.
 * <li> If a following pattern match is to be found, any position within a
 * contracting sequence except the first will fail. Vice versa if a
 * preceding pattern match is to be found, a invalid starting point
 * would be any character within a contracting sequence except the last.
 * </ul>
 * 
 * A <tt>BreakIterator</tt> can be used if only matches at logical breaks are desired.
 * Using a <tt>BreakIterator</tt> will only give you results that exactly matches the
 * boundaries given by the breakiterator. For instance the pattern "e" will
 * not be found in the string "\u00e9" if a character break iterator is used.
 * 
 * Options are provided to handle overlapping matches.
 * E.g. In English, overlapping matches produces the result 0 and 2
 * for the pattern "abab" in the text "ababab", where else mutually
 * exclusive matches only produce the result of 0.
 * 
 * Though collator attributes will be taken into consideration while
 * performing matches, there are no APIs here for setting and getting the
 * attributes. These attributes can be set by getting the collator
 * from <tt>getCollator</tt> and using the APIs in <tt>coll.h</tt>.
 * Lastly to update <tt>StringSearch</tt> to the new collator attributes,
 * <tt>reset</tt> has to be called.
 * 
 * Restriction: 
 * Currently there are no composite characters that consists of a
 * character with combining class > 0 before a character with combining
 * class == 0. However, if such a character exists in the future,
 * <tt>StringSearch</tt> does not guarantee the results for option 1.
 * 
 * Consult the <tt>SearchIterator</tt> documentation for information on
 * and examples of how to use instances of this class to implement text
 * searching.
 * <pre><code>
 * UnicodeString target("The quick brown fox jumps over the lazy dog.");
 * UnicodeString pattern("fox");
 *
 * UErrorCode error = U_ZERO_ERROR;
 * StringSearch iter(pattern, target, Locale::getUS(), NULL, status);
 * 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.getMatchedLength());
 * }
 * </code></pre>
 * 
 * Note, <tt>StringSearch</tt> is not to be subclassed.
 * 
 * @see SearchIterator
 * @see RuleBasedCollator
 * @since ICU 2.0
 */

class U_I18N_API StringSearch U_FINAL : public SearchIterator
{
public:

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

/**
 * Creating a <tt>StringSearch</tt> instance using the argument locale 
 * language rule set. A collator will be created in the process, which 
 * will be owned by this instance and will be deleted during 
 * destruction
 * @param pattern The text for which this object will search.
 * @param text The text in which to search for the pattern.
 * @param locale A locale which defines the language-sensitive 
 * comparison rules used to determine whether text in the 
 * pattern and target matches. 
 * @param breakiter A <tt>BreakIterator</tt> object used to constrain 
 * the matches that are found. Matches whose start and end 
 * indices in the target text are not boundaries as 
 * determined by the <tt>BreakIterator</tt> are 
 * ignored. If this behavior is not desired, 
 * <tt>NULL</tt> can be passed in instead.
 * @param status for errors if any. If pattern or text is NULL, or if
 * either the length of pattern or text is 0 then an 
 * U_ILLEGAL_ARGUMENT_ERROR is returned.
 * @stable ICU 2.0
 */
 StringSearch(const UnicodeString &pattern, const UnicodeString &text,
 const Locale &locale, 
 BreakIterator *breakiter,
 UErrorCode &status);

/**
 * Creating a <tt>StringSearch</tt> instance using the argument collator 
 * language rule set. Note, user retains the ownership of this collator, 
 * it does not get destroyed during this instance's destruction.
 * @param pattern The text for which this object will search.
 * @param text The text in which to search for the pattern.
 * @param coll A <tt>RuleBasedCollator</tt> object which defines 
 * the language-sensitive comparison rules used to 
 * determine whether text in the pattern and target 
 * matches. User is responsible for the clearing of this
 * object.
 * @param breakiter A <tt>BreakIterator</tt> object used to constrain 
 * the matches that are found. Matches whose start and end 
 * indices in the target text are not boundaries as 
 * determined by the <tt>BreakIterator</tt> are 
 * ignored. If this behavior is not desired, 
 * <tt>NULL</tt> can be passed in instead.
 * @param status for errors if any. If either the length of pattern or 
 * text is 0 then an U_ILLEGAL_ARGUMENT_ERROR is returned.
 * @stable ICU 2.0
 */
 StringSearch(const UnicodeString &pattern, 
 const UnicodeString &text,
 RuleBasedCollator *coll, 
 BreakIterator *breakiter,
 UErrorCode &status);

/**
 * Creating a <tt>StringSearch</tt> instance using the argument locale 
 * language rule set. A collator will be created in the process, which 
 * will be owned by this instance and will be deleted during 
 * destruction
 * 
 * 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 pattern The text for which this object will search.
 * @param text The text iterator in which to search for the pattern.
 * @param locale A locale which defines the language-sensitive 
 * comparison rules used to determine whether text in the 
 * pattern and target matches. User is responsible for 
 * the clearing of this object.
 * @param breakiter A <tt>BreakIterator</tt> object used to constrain 
 * the matches that are found. Matches whose start and end 
 * indices in the target text are not boundaries as 
 * determined by the <tt>BreakIterator</tt> are 
 * ignored. If this behavior is not desired, 
 * <tt>NULL</tt> can be passed in instead.
 * @param status for errors if any. If either the length of pattern or 
 * text is 0 then an U_ILLEGAL_ARGUMENT_ERROR is returned.
 * @stable ICU 2.0
 */
 StringSearch(const UnicodeString &pattern, CharacterIterator &text,
 const Locale &locale, 
 BreakIterator *breakiter,
 UErrorCode &status);

/**
 * Creating a <tt>StringSearch</tt> instance using the argument collator 
 * language rule set. Note, user retains the ownership of this collator, 
 * it does not get destroyed during this instance's destruction.
 * 
 * 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 pattern The text for which this object will search.
 * @param text The text in which to search for the pattern.
 * @param coll A <tt>RuleBasedCollator</tt> object which defines 
 * the language-sensitive comparison rules used to 
 * determine whether text in the pattern and target 
 * matches. User is responsible for the clearing of this
 * object.
 * @param breakiter A <tt>BreakIterator</tt> object used to constrain 
 * the matches that are found. Matches whose start and end 
 * indices in the target text are not boundaries as 
 * determined by the <tt>BreakIterator</tt> are 
 * ignored. If this behavior is not desired, 
 * <tt>NULL</tt> can be passed in instead.
 * @param status for errors if any. If either the length of pattern or 
 * text is 0 then an U_ILLEGAL_ARGUMENT_ERROR is returned.
 * @stable ICU 2.0
 */
 StringSearch(const UnicodeString &pattern, CharacterIterator &text,
 RuleBasedCollator *coll, 
 BreakIterator *breakiter,
 UErrorCode &status);

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

/**
    * Destructor. Cleans up the search iterator data struct.
    * If a collator is created in the constructor, it will be destroyed here.
    * @stable ICU 2.0
    */
    virtual ~StringSearch(void);

/**
     * Clone this object.
     * Clones can be used concurrently in multiple threads.
     * If an error occurs, then NULL is returned.
     * The caller must delete the clone.
     *
     * @return a clone of this object
     *
     * @see getDynamicClassID
     * @stable ICU 2.8
     */
    StringSearch *clone() const;

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

/**
     * 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
     */
    StringSearch & operator=(const StringSearch &that);

/**
     * Equality operator. 
     * @param that instance to be compared.
     * @return true if both instances have the same attributes, 
     *         breakiterators, collators and iterate over the same text 
     *         while looking for the same pattern.
     * @stable ICU 2.0
     */
    virtual bool operator==(const SearchIterator &that) const override;

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

/**
 * Sets the index to point to the given position, and clears any state 
 * that's affected.
 * 
 * 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) override;

/**
     * 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 override;

/**
 * Set the target 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.
 * @param text text string 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(const UnicodeString &text, UErrorCode &status) override;
 
 /**
 * Set the target 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.
 * 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 text string 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) override;

/**
 * Gets the collator used for the language rules.
 * 
 * Caller may modify but must not delete the <tt>RuleBasedCollator</tt>!
 * Modifications to this collator will affect the original collator passed in to 
 * the <tt>StringSearch></tt> constructor or to setCollator, if any.
 * @return collator used for string search
 * @stable ICU 2.0
 */
 RuleBasedCollator * getCollator() const;
 
 /**
 * Sets the collator used for the language rules. User retains the 
 * ownership of this collator, thus the responsibility of deletion lies 
 * with the user. The iterator's position will not be changed by this method.
 * @param coll collator 
 * @param status for errors if any
 * @stable ICU 2.0
 */
 void setCollator(RuleBasedCollator *coll, UErrorCode &status);
 
 /**
 * Sets the pattern used for matching.
 * The iterator's position will not be changed by this method.
 * @param pattern search pattern to be found
 * @param status for errors if any. If the pattern length is 0 then an 
 * U_ILLEGAL_ARGUMENT_ERROR is returned.
 * @stable ICU 2.0
 */
 void setPattern(const UnicodeString &pattern, UErrorCode &status);
 
 /**
 * Gets the search pattern.
 * @return pattern used for matching
 * @stable ICU 2.0
 */
 const UnicodeString & getPattern() const;

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

/** 
     * Reset 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() override;

/**
     * Returns a copy of StringSearch with the same behavior, and 
     * iterating over the same text, as this one. Note that all data will be
     * replicated, except for the user-specified collator and the
     * breakiterator.
     * @return cloned object
     * @stable ICU 2.0
     */
    virtual StringSearch * safeClone() const override;
    
    /**
     * ICU "poor man's RTTI", returns a UClassID for the actual class.
     *
     * @stable ICU 2.2
     */
    virtual UClassID getDynamicClassID() const override;

/**
     * ICU "poor man's RTTI", returns a UClassID for this class.
     *
     * @stable ICU 2.2
     */
    static UClassID U_EXPORT2 getStaticClassID();

protected:

// protected method -------------------------------------------------

/**
 * Search forward for matching text, starting at a given location.
 * Clients should not call this method directly; instead they should 
 * call {@link SearchIterator#next }.
 * 
 * If a match is found, this method returns the index at which the match
 * starts and calls {@link SearchIterator#setMatchLength } with the number 
 * of characters in the target text that make up the match. If no match 
 * is found, the method returns <tt>USEARCH_DONE</tt>.
 * 
 * The <tt>StringSearch</tt> is adjusted so that its current index 
 * (as returned by {@link #getOffset }) is the match position if one was 
 * found.
 * If a match is not found, <tt>USEARCH_DONE</tt> will be returned and
 * the <tt>StringSearch</tt> will be adjusted to the index USEARCH_DONE.
 * @param position The index in the target text at which the search 
 * starts
 * @param status for errors if any occurs
 * @return The index at which the matched text in the target starts, or 
 * USEARCH_DONE if no match was found.
 * @stable ICU 2.0
 */
 virtual int32_t handleNext(int32_t position, UErrorCode &status) override;

/**
 * Search backward for matching text, starting at a given location.
 * Clients should not call this method directly; instead they should call
 * <tt>SearchIterator.previous()</tt>, which this method overrides.
 * 
 * If a match is found, this method returns the index at which the match
 * starts and calls {@link SearchIterator#setMatchLength } with the number 
 * of characters in the target text that make up the match. If no match 
 * is found, the method returns <tt>USEARCH_DONE</tt>.
 * 
 * The <tt>StringSearch</tt> is adjusted so that its current index 
 * (as returned by {@link #getOffset }) is the match position if one was 
 * found.
 * If a match is not found, <tt>USEARCH_DONE</tt> will be returned and
 * the <tt>StringSearch</tt> will be adjusted to the index USEARCH_DONE.
 * @param position The index in the target text at which the search 
 * starts.
 * @param status for errors if any occurs
 * @return The index at which the matched text in the target starts, or 
 * USEARCH_DONE if no match was found.
 * @stable ICU 2.0
 */
 virtual int32_t handlePrev(int32_t position, UErrorCode &status) override;
 
private :
 StringSearch(); // default constructor not implemented

// private data members ----------------------------------------------

/**
    * Pattern text
    * @stable ICU 2.0
    */
    UnicodeString      m_pattern_;
    /**
    * String search struct data
    * @stable ICU 2.0
    */
    UStringSearch     *m_strsrch_;

};

U_NAMESPACE_END

#endif /* #if !UCONFIG_NO_COLLATION */

#endif /* U_SHOW_CPLUSPLUS_API */

#endif

cmd: