[apple/icu.git] / icuSources / i18n / anytrans.cpp

/*
*****************************************************************
* Copyright (c) 2002-2014, International Business Machines Corporation
* and others.  All Rights Reserved.
*****************************************************************
* Date        Name        Description
* 06/06/2002  aliu        Creation.
*****************************************************************
*/

#include "unicode/utypes.h"

#if !UCONFIG_NO_TRANSLITERATION

#include "unicode/uobject.h"
#include "unicode/uscript.h"

#include "anytrans.h"
#include "hash.h"
#include "mutex.h"
#include "nultrans.h"
#include "putilimp.h"
#include "tridpars.h"
#include "uinvchar.h"
#include "uvector.h"

//------------------------------------------------------------
// Constants

static const UChar TARGET_SEP = 45; // '-'
static const UChar VARIANT_SEP = 47; // '/'
static const UChar ANY[] = {65,110,121,0}; // "Any"
static const UChar NULL_ID[] = {78,117,108,108,0}; // "Null"
static const UChar LATIN_PIVOT[] = {45,76,97,116,105,110,59,76,97,116,105,110,45,0}; // "-Latin;Latin-"

//------------------------------------------------------------

U_CDECL_BEGIN
/**
 * Deleter function for Transliterator*.
 */
static void U_CALLCONV
_deleteTransliterator(void *obj) {
    delete (icu::Transliterator*) obj;
}
U_CDECL_END

//------------------------------------------------------------

U_NAMESPACE_BEGIN

//------------------------------------------------------------
// ScriptRunIterator

/**
 * Returns a series of ranges corresponding to scripts. They will be
 * of the form:
 *
 * ccccSScSSccccTTcTcccc   - c = common, S = first script, T = second
 * |            |          - first run (start, limit)
 *          |           |  - second run (start, limit)
 *
 * That is, the runs will overlap. The reason for this is so that a
 * transliterator can consider common characters both before and after
 * the scripts.
 */
class ScriptRunIterator : public UMemory {
private:
    const Replaceable& text;
    int32_t textStart;
    int32_t textLimit;

public:
    /**
     * The code of the current run, valid after next() returns.  May
     * be USCRIPT_INVALID_CODE if and only if the entire text is
     * COMMON/INHERITED.
     */
    UScriptCode scriptCode;

    /**
     * The start of the run, inclusive, valid after next() returns.
     */
    int32_t start;

    /**
     * The end of the run, exclusive, valid after next() returns.
     */
    int32_t limit;

    /**
     * Constructs a run iterator over the given text from start
     * (inclusive) to limit (exclusive).
     */
    ScriptRunIterator(const Replaceable& text, int32_t start, int32_t limit);

    /**
     * Returns TRUE if there are any more runs.  TRUE is always
     * returned at least once.  Upon return, the caller should
     * examine scriptCode, start, and limit.
     */
    UBool next();

    /**
     * Adjusts internal indices for a change in the limit index of the
     * given delta.  A positive delta means the limit has increased.
     */
    void adjustLimit(int32_t delta);

private:
    ScriptRunIterator(const ScriptRunIterator &other); // forbid copying of this class
    ScriptRunIterator &operator=(const ScriptRunIterator &other); // forbid copying of this class
};

ScriptRunIterator::ScriptRunIterator(const Replaceable& theText,
                                     int32_t myStart, int32_t myLimit) :
    text(theText)
{
    textStart = myStart;
    textLimit = myLimit;
    limit = myStart;
}

UBool ScriptRunIterator::next() {
    UChar32 ch;
    UScriptCode s;
    UErrorCode ec = U_ZERO_ERROR;

    scriptCode = USCRIPT_INVALID_CODE; // don't know script yet
    start = limit;

    // Are we done?
    if (start == textLimit) {
        return FALSE;
    }

    // Move start back to include adjacent COMMON or INHERITED
    // characters
    while (start > textStart) {
        ch = text.char32At(start - 1); // look back
        s = uscript_getScript(ch, &ec);
        if (s == USCRIPT_COMMON || s == USCRIPT_INHERITED) {
            --start;
        } else {
            break;
        }
    }

    // Move limit ahead to include COMMON, INHERITED, and characters
    // of the current script.
    while (limit < textLimit) {
        ch = text.char32At(limit); // look ahead
        s = uscript_getScript(ch, &ec);
        if (s != USCRIPT_COMMON && s != USCRIPT_INHERITED) {
            if (scriptCode == USCRIPT_INVALID_CODE) {
                scriptCode = s;
            } else if (s != scriptCode) {
                break;
            }
        }
        ++limit;
    }

    // Return TRUE even if the entire text is COMMON / INHERITED, in
    // which case scriptCode will be USCRIPT_INVALID_CODE.
    return TRUE;
}

void ScriptRunIterator::adjustLimit(int32_t delta) {
    limit += delta;
    textLimit += delta;
}

//------------------------------------------------------------
// AnyTransliterator

UOBJECT_DEFINE_RTTI_IMPLEMENTATION(AnyTransliterator)

AnyTransliterator::AnyTransliterator(const UnicodeString& id,
                                     const UnicodeString& theTarget,
                                     const UnicodeString& theVariant,
                                     UScriptCode theTargetScript,
                                     UErrorCode& ec) :
    Transliterator(id, NULL),
    targetScript(theTargetScript)
{
    cache = uhash_open(uhash_hashLong, uhash_compareLong, NULL, &ec);
    if (U_FAILURE(ec)) {
        return;
    }
    uhash_setValueDeleter(cache, _deleteTransliterator);

    target = theTarget;
    if (theVariant.length() > 0) {
        target.append(VARIANT_SEP).append(theVariant);
    }
}

AnyTransliterator::~AnyTransliterator() {
    uhash_close(cache);
}

/**
 * Copy constructor.
 */
AnyTransliterator::AnyTransliterator(const AnyTransliterator& o) :
    Transliterator(o),
    target(o.target),
    targetScript(o.targetScript)
{
    // Don't copy the cache contents
    UErrorCode ec = U_ZERO_ERROR;
    cache = uhash_open(uhash_hashLong, uhash_compareLong, NULL, &ec);
    if (U_FAILURE(ec)) {
        return;
    }
    uhash_setValueDeleter(cache, _deleteTransliterator);
}

/**
 * Transliterator API.
 */
Transliterator* AnyTransliterator::clone() const {
    return new AnyTransliterator(*this);
}

/**
 * Implements {@link Transliterator#handleTransliterate}.
 */
void AnyTransliterator::handleTransliterate(Replaceable& text, UTransPosition& pos,
                                            UBool isIncremental) const {
    int32_t allStart = pos.start;
    int32_t allLimit = pos.limit;

    ScriptRunIterator it(text, pos.contextStart, pos.contextLimit);

    while (it.next()) {
        // Ignore runs in the ante context
        if (it.limit <= allStart) continue;

        // Try to instantiate transliterator from it.scriptCode to
        // our target or target/variant
        Transliterator* t = getTransliterator(it.scriptCode);

        if (t == NULL) {
            // We have no transliterator.  Do nothing, but keep
            // pos.start up to date.
            pos.start = it.limit;
            continue;
        }

        // If the run end is before the transliteration limit, do
        // a non-incremental transliteration.  Otherwise do an
        // incremental one.
        UBool incremental = isIncremental && (it.limit >= allLimit);

        pos.start = uprv_max(allStart, it.start);
        pos.limit = uprv_min(allLimit, it.limit);
        int32_t limit = pos.limit;
        t->filteredTransliterate(text, pos, incremental);
        int32_t delta = pos.limit - limit;
        allLimit += delta;
        it.adjustLimit(delta);

        // We're done if we enter the post context
        if (it.limit >= allLimit) break;
    }

    // Restore limit.  pos.start is fine where the last transliterator
    // left it, or at the end of the last run.
    pos.limit = allLimit;
}

Transliterator* AnyTransliterator::getTransliterator(UScriptCode source) const {

    if (source == targetScript || source == USCRIPT_INVALID_CODE) {
        return NULL;
    }

    Transliterator* t = NULL;
    {
        Mutex m(NULL);
        t = (Transliterator*) uhash_iget(cache, (int32_t) source);
    }
    if (t == NULL) {
        UErrorCode ec = U_ZERO_ERROR;
        UnicodeString sourceName(uscript_getName(source), -1, US_INV);
        UnicodeString id(sourceName);
        id.append(TARGET_SEP).append(target);

        t = Transliterator::createInstance(id, UTRANS_FORWARD, ec);
        if (U_FAILURE(ec) || t == NULL) {
            delete t;

            // Try to pivot around Latin, our most common script
            id = sourceName;
            id.append(LATIN_PIVOT, -1).append(target);
            t = Transliterator::createInstance(id, UTRANS_FORWARD, ec);
            if (U_FAILURE(ec) || t == NULL) {
                delete t;
                t = NULL;
            }
        }

        if (t != NULL) {
            Transliterator *rt = NULL;
            {
                Mutex m(NULL);
                rt = static_cast<Transliterator *> (uhash_iget(cache, (int32_t) source));
                if (rt == NULL) {
                    // Common case, no race to cache this new transliterator.
                    uhash_iput(cache, (int32_t) source, t, &ec);
                } else {
                    // Race case, some other thread beat us to caching this transliterator.
                    Transliterator *temp = rt;
                    rt = t;    // Our newly created transliterator that lost the race & now needs deleting.
                    t  = temp; // The transliterator from the cache that we will return.
                }
            }
            delete rt;    // will be non-null only in case of races.
        }
    }
    return t;
}

/**
 * Return the script code for a given name, or -1 if not found.
 */
static UScriptCode scriptNameToCode(const UnicodeString& name) {
    char buf[128];
    UScriptCode code;
    UErrorCode ec = U_ZERO_ERROR;
    int32_t nameLen = name.length();
    UBool isInvariant = uprv_isInvariantUString(name.getBuffer(), nameLen);

    if (isInvariant) {
        name.extract(0, nameLen, buf, (int32_t)sizeof(buf), US_INV);
        buf[127] = 0;   // Make sure that we NULL terminate the string.
    }
    if (!isInvariant || uscript_getCode(buf, &code, 1, &ec) != 1 || U_FAILURE(ec))
    {
        code = USCRIPT_INVALID_CODE;
    }
    return code;
}

/**
 * Registers standard transliterators with the system.  Called by
 * Transliterator during initialization.  Scan all current targets and
 * register those that are scripts T as Any-T/V.
 */
void AnyTransliterator::registerIDs() {

    UErrorCode ec = U_ZERO_ERROR;
    Hashtable seen(TRUE, ec);

    int32_t sourceCount = Transliterator::_countAvailableSources();
    for (int32_t s=0; s<sourceCount; ++s) {
        UnicodeString source;
        Transliterator::_getAvailableSource(s, source);

        // Ignore the "Any" source
        if (source.caseCompare(ANY, 3, 0 /*U_FOLD_CASE_DEFAULT*/) == 0) continue;

        int32_t targetCount = Transliterator::_countAvailableTargets(source);
        for (int32_t t=0; t<targetCount; ++t) {
            UnicodeString target;
            Transliterator::_getAvailableTarget(t, source, target);

            // Only process each target once
            if (seen.geti(target) != 0) continue;
            ec = U_ZERO_ERROR;
            seen.puti(target, 1, ec);

            // Get the script code for the target.  If not a script, ignore.
            UScriptCode targetScript = scriptNameToCode(target);
            if (targetScript == USCRIPT_INVALID_CODE) continue;

            int32_t variantCount = Transliterator::_countAvailableVariants(source, target);
            // assert(variantCount >= 1);
            for (int32_t v=0; v<variantCount; ++v) {
                UnicodeString variant;
                Transliterator::_getAvailableVariant(v, source, target, variant);

                UnicodeString id;
                TransliteratorIDParser::STVtoID(UnicodeString(TRUE, ANY, 3), target, variant, id);
                ec = U_ZERO_ERROR;
                AnyTransliterator* t = new AnyTransliterator(id, target, variant,
                                                             targetScript, ec);
                if (U_FAILURE(ec)) {
                    delete t;
                } else {
                    Transliterator::_registerInstance(t);
                    Transliterator::_registerSpecialInverse(target, UnicodeString(TRUE, NULL_ID, 4), FALSE);
                }
            }
        }
    }
}

U_NAMESPACE_END

#endif /* #if !UCONFIG_NO_TRANSLITERATION */

//eof
Commit	Line	Data
b75a7d8f A	1	/*
b75a7d8f A	2	*****************************************************************
57a6839d	3	* Copyright (c) 2002-2014, International Business Machines Corporation
b75a7d8f A	4	* and others. All Rights Reserved.
	5	*****************************************************************
	6	* Date Name Description
	7	* 06/06/2002 aliu Creation.
	8	*****************************************************************
	9	*/
	10
	11	#include "unicode/utypes.h"
	12
	13	#if !UCONFIG_NO_TRANSLITERATION
	14
	15	#include "unicode/uobject.h"
	16	#include "unicode/uscript.h"
57a6839d	17
b75a7d8f	18	#include "anytrans.h"
b75a7d8f	19	#include "hash.h"
57a6839d A	20	#include "mutex.h"
57a6839d A	21	#include "nultrans.h"
374ca955	22	#include "putilimp.h"
57a6839d	23	#include "tridpars.h"
73c04bcf	24	#include "uinvchar.h"
57a6839d	25	#include "uvector.h"
b75a7d8f A	26
	27	//------------------------------------------------------------
	28	// Constants
	29
	30	static const UChar TARGET_SEP = 45; // '-'
	31	static const UChar VARIANT_SEP = 47; // '/'
	32	static const UChar ANY[] = {65,110,121,0}; // "Any"
	33	static const UChar NULL_ID[] = {78,117,108,108,0}; // "Null"
	34	static const UChar LATIN_PIVOT[] = {45,76,97,116,105,110,59,76,97,116,105,110,45,0}; // "-Latin;Latin-"
	35
	36	//------------------------------------------------------------
	37
	38	U_CDECL_BEGIN
	39	/**
	40	* Deleter function for Transliterator*.
	41	*/
	42	static void U_CALLCONV
	43	_deleteTransliterator(void *obj) {
57a6839d	44	delete (icu::Transliterator*) obj;
b75a7d8f A	45	}
	46	U_CDECL_END
	47
	48	//------------------------------------------------------------
	49
	50	U_NAMESPACE_BEGIN
	51
	52	//------------------------------------------------------------
	53	// ScriptRunIterator
	54
	55	/**
	56	* Returns a series of ranges corresponding to scripts. They will be
	57	* of the form:
	58	*
	59	* ccccSScSSccccTTcTcccc - c = common, S = first script, T = second
	60	* \| \| - first run (start, limit)
	61	* \| \| - second run (start, limit)
	62	*
	63	* That is, the runs will overlap. The reason for this is so that a
	64	* transliterator can consider common characters both before and after
	65	* the scripts.
	66	*/
	67	class ScriptRunIterator : public UMemory {
	68	private:
	69	const Replaceable& text;
	70	int32_t textStart;
	71	int32_t textLimit;
	72
	73	public:
	74	/**
	75	* The code of the current run, valid after next() returns. May
	76	* be USCRIPT_INVALID_CODE if and only if the entire text is
	77	* COMMON/INHERITED.
	78	*/
	79	UScriptCode scriptCode;
	80
	81	/**
	82	* The start of the run, inclusive, valid after next() returns.
	83	*/
	84	int32_t start;
	85
	86	/**
	87	* The end of the run, exclusive, valid after next() returns.
	88	*/
	89	int32_t limit;
57a6839d	90
b75a7d8f A	91	/**
	92	* Constructs a run iterator over the given text from start
	93	* (inclusive) to limit (exclusive).
	94	*/
	95	ScriptRunIterator(const Replaceable& text, int32_t start, int32_t limit);
	96
	97	/**
	98	* Returns TRUE if there are any more runs. TRUE is always
	99	* returned at least once. Upon return, the caller should
	100	* examine scriptCode, start, and limit.
	101	*/
	102	UBool next();
	103
	104	/**
	105	* Adjusts internal indices for a change in the limit index of the
	106	* given delta. A positive delta means the limit has increased.
	107	*/
	108	void adjustLimit(int32_t delta);
	109
	110	private:
	111	ScriptRunIterator(const ScriptRunIterator &other); // forbid copying of this class
	112	ScriptRunIterator &operator=(const ScriptRunIterator &other); // forbid copying of this class
	113	};
	114
	115	ScriptRunIterator::ScriptRunIterator(const Replaceable& theText,
	116	int32_t myStart, int32_t myLimit) :
	117	text(theText)
	118	{
	119	textStart = myStart;
	120	textLimit = myLimit;
	121	limit = myStart;
	122	}
	123
	124	UBool ScriptRunIterator::next() {
	125	UChar32 ch;
	126	UScriptCode s;
	127	UErrorCode ec = U_ZERO_ERROR;
	128
	129	scriptCode = USCRIPT_INVALID_CODE; // don't know script yet
	130	start = limit;
	131
	132	// Are we done?
	133	if (start == textLimit) {
	134	return FALSE;
	135	}
	136
	137	// Move start back to include adjacent COMMON or INHERITED
	138	// characters
	139	while (start > textStart) {
	140	ch = text.char32At(start - 1); // look back
	141	s = uscript_getScript(ch, &ec);
	142	if (s == USCRIPT_COMMON \|\| s == USCRIPT_INHERITED) {
	143	--start;
	144	} else {
	145	break;
	146	}
	147	}
	148
	149	// Move limit ahead to include COMMON, INHERITED, and characters
	150	// of the current script.
	151	while (limit < textLimit) {
	152	ch = text.char32At(limit); // look ahead
	153	s = uscript_getScript(ch, &ec);
	154	if (s != USCRIPT_COMMON && s != USCRIPT_INHERITED) {
155	if (scriptCode == USCRIPT_INVALID_CODE) {
156	scriptCode = s;
157	} else if (s != scriptCode) {
158	break;
159	}
160	}
161	++limit;
162	}
163
164	// Return TRUE even if the entire text is COMMON / INHERITED, in
165	// which case scriptCode will be USCRIPT_INVALID_CODE.
166	return TRUE;
167	}
168
169	void ScriptRunIterator::adjustLimit(int32_t delta) {
170	limit += delta;
171	textLimit += delta;
172	}
173
174	//------------------------------------------------------------
175	// AnyTransliterator
176
374ca955	177	UOBJECT_DEFINE_RTTI_IMPLEMENTATION(AnyTransliterator)
b75a7d8f A	178
	179	AnyTransliterator::AnyTransliterator(const UnicodeString& id,
	180	const UnicodeString& theTarget,
	181	const UnicodeString& theVariant,
	182	UScriptCode theTargetScript,
	183	UErrorCode& ec) :
	184	Transliterator(id, NULL),
57a6839d	185	targetScript(theTargetScript)
b75a7d8f	186	{
73c04bcf	187	cache = uhash_open(uhash_hashLong, uhash_compareLong, NULL, &ec);
46f4442e A	188	if (U_FAILURE(ec)) {
	189	return;
	190	}
b75a7d8f A	191	uhash_setValueDeleter(cache, _deleteTransliterator);
	192
	193	target = theTarget;
	194	if (theVariant.length() > 0) {
	195	target.append(VARIANT_SEP).append(theVariant);
	196	}
	197	}
	198
	199	AnyTransliterator::~AnyTransliterator() {
	200	uhash_close(cache);
	201	}
	202
	203	/**
	204	* Copy constructor.
	205	*/
	206	AnyTransliterator::AnyTransliterator(const AnyTransliterator& o) :
	207	Transliterator(o),
	208	target(o.target),
	209	targetScript(o.targetScript)
	210	{
	211	// Don't copy the cache contents
	212	UErrorCode ec = U_ZERO_ERROR;
73c04bcf	213	cache = uhash_open(uhash_hashLong, uhash_compareLong, NULL, &ec);
46f4442e A	214	if (U_FAILURE(ec)) {
	215	return;
	216	}
b75a7d8f A	217	uhash_setValueDeleter(cache, _deleteTransliterator);
	218	}
	219
	220	/**
	221	* Transliterator API.
	222	*/
	223	Transliterator* AnyTransliterator::clone() const {
	224	return new AnyTransliterator(*this);
	225	}
	226
	227	/**
	228	* Implements {@link Transliterator#handleTransliterate}.
	229	*/
	230	void AnyTransliterator::handleTransliterate(Replaceable& text, UTransPosition& pos,
	231	UBool isIncremental) const {
	232	int32_t allStart = pos.start;
	233	int32_t allLimit = pos.limit;
	234
	235	ScriptRunIterator it(text, pos.contextStart, pos.contextLimit);
	236
	237	while (it.next()) {
	238	// Ignore runs in the ante context
	239	if (it.limit <= allStart) continue;
	240
	241	// Try to instantiate transliterator from it.scriptCode to
	242	// our target or target/variant
	243	Transliterator* t = getTransliterator(it.scriptCode);
57a6839d	244
b75a7d8f A	245	if (t == NULL) {
	246	// We have no transliterator. Do nothing, but keep
	247	// pos.start up to date.
	248	pos.start = it.limit;
	249	continue;
	250	}
	251
	252	// If the run end is before the transliteration limit, do
	253	// a non-incremental transliteration. Otherwise do an
	254	// incremental one.
	255	UBool incremental = isIncremental && (it.limit >= allLimit);
57a6839d	256
b75a7d8f A	257	pos.start = uprv_max(allStart, it.start);
	258	pos.limit = uprv_min(allLimit, it.limit);
	259	int32_t limit = pos.limit;
	260	t->filteredTransliterate(text, pos, incremental);
	261	int32_t delta = pos.limit - limit;
	262	allLimit += delta;
	263	it.adjustLimit(delta);
	264
	265	// We're done if we enter the post context
	266	if (it.limit >= allLimit) break;
	267	}
	268
	269	// Restore limit. pos.start is fine where the last transliterator
	270	// left it, or at the end of the last run.
	271	pos.limit = allLimit;
	272	}
	273
	274	Transliterator* AnyTransliterator::getTransliterator(UScriptCode source) const {
	275
	276	if (source == targetScript \|\| source == USCRIPT_INVALID_CODE) {
	277	return NULL;
	278	}
	279
57a6839d A	280	Transliterator* t = NULL;
	281	{
	282	Mutex m(NULL);
	283	t = (Transliterator*) uhash_iget(cache, (int32_t) source);
	284	}
b75a7d8f A	285	if (t == NULL) {
b75a7d8f A	286	UErrorCode ec = U_ZERO_ERROR;
73c04bcf	287	UnicodeString sourceName(uscript_getName(source), -1, US_INV);
b75a7d8f A	288	UnicodeString id(sourceName);
b75a7d8f A	289	id.append(TARGET_SEP).append(target);
57a6839d	290
b75a7d8f A	291	t = Transliterator::createInstance(id, UTRANS_FORWARD, ec);
	292	if (U_FAILURE(ec) \|\| t == NULL) {
	293	delete t;
57a6839d	294
b75a7d8f A	295	// Try to pivot around Latin, our most common script
b75a7d8f A	296	id = sourceName;
4388f060	297	id.append(LATIN_PIVOT, -1).append(target);
b75a7d8f A	298	t = Transliterator::createInstance(id, UTRANS_FORWARD, ec);
	299	if (U_FAILURE(ec) \|\| t == NULL) {
	300	delete t;
	301	t = NULL;
	302	}
	303	}
	304
	305	if (t != NULL) {
57a6839d A	306	Transliterator *rt = NULL;
	307	{
	308	Mutex m(NULL);
	309	rt = static_cast<Transliterator *> (uhash_iget(cache, (int32_t) source));
	310	if (rt == NULL) {
	311	// Common case, no race to cache this new transliterator.
	312	uhash_iput(cache, (int32_t) source, t, &ec);
	313	} else {
	314	// Race case, some other thread beat us to caching this transliterator.
	315	Transliterator *temp = rt;
	316	rt = t; // Our newly created transliterator that lost the race & now needs deleting.
	317	t = temp; // The transliterator from the cache that we will return.
	318	}
	319	}
	320	delete rt; // will be non-null only in case of races.
b75a7d8f A	321	}
b75a7d8f A	322	}
b75a7d8f A	323	return t;
	324	}
	325
	326	/**
	327	* Return the script code for a given name, or -1 if not found.
	328	*/
73c04bcf	329	static UScriptCode scriptNameToCode(const UnicodeString& name) {
b75a7d8f A	330	char buf[128];
	331	UScriptCode code;
	332	UErrorCode ec = U_ZERO_ERROR;
73c04bcf A	333	int32_t nameLen = name.length();
73c04bcf A	334	UBool isInvariant = uprv_isInvariantUString(name.getBuffer(), nameLen);
57a6839d	335
73c04bcf A	336	if (isInvariant) {
	337	name.extract(0, nameLen, buf, (int32_t)sizeof(buf), US_INV);
	338	buf[127] = 0; // Make sure that we NULL terminate the string.
	339	}
	340	if (!isInvariant \|\| uscript_getCode(buf, &code, 1, &ec) != 1 \|\| U_FAILURE(ec))
	341	{
b75a7d8f A	342	code = USCRIPT_INVALID_CODE;
	343	}
	344	return code;
	345	}
	346
	347	/**
	348	* Registers standard transliterators with the system. Called by
	349	* Transliterator during initialization. Scan all current targets and
	350	* register those that are scripts T as Any-T/V.
	351	*/
	352	void AnyTransliterator::registerIDs() {
	353
374ca955 A	354	UErrorCode ec = U_ZERO_ERROR;
374ca955 A	355	Hashtable seen(TRUE, ec);
b75a7d8f A	356
	357	int32_t sourceCount = Transliterator::_countAvailableSources();
	358	for (int32_t s=0; s<sourceCount; ++s) {
	359	UnicodeString source;
	360	Transliterator::_getAvailableSource(s, source);
	361
	362	// Ignore the "Any" source
4388f060	363	if (source.caseCompare(ANY, 3, 0 /U_FOLD_CASE_DEFAULT/) == 0) continue;
b75a7d8f A	364
	365	int32_t targetCount = Transliterator::_countAvailableTargets(source);
	366	for (int32_t t=0; t<targetCount; ++t) {
	367	UnicodeString target;
	368	Transliterator::_getAvailableTarget(t, source, target);
	369
	370	// Only process each target once
	371	if (seen.geti(target) != 0) continue;
	372	ec = U_ZERO_ERROR;
	373	seen.puti(target, 1, ec);
57a6839d	374
b75a7d8f A	375	// Get the script code for the target. If not a script, ignore.
	376	UScriptCode targetScript = scriptNameToCode(target);
	377	if (targetScript == USCRIPT_INVALID_CODE) continue;
	378
	379	int32_t variantCount = Transliterator::_countAvailableVariants(source, target);
	380	// assert(variantCount >= 1);
	381	for (int32_t v=0; v<variantCount; ++v) {
	382	UnicodeString variant;
	383	Transliterator::_getAvailableVariant(v, source, target, variant);
57a6839d	384
b75a7d8f	385	UnicodeString id;
4388f060	386	TransliteratorIDParser::STVtoID(UnicodeString(TRUE, ANY, 3), target, variant, id);
b75a7d8f A	387	ec = U_ZERO_ERROR;
	388	AnyTransliterator* t = new AnyTransliterator(id, target, variant,
	389	targetScript, ec);
	390	if (U_FAILURE(ec)) {
	391	delete t;
	392	} else {
	393	Transliterator::_registerInstance(t);
4388f060	394	Transliterator::_registerSpecialInverse(target, UnicodeString(TRUE, NULL_ID, 4), FALSE);
b75a7d8f A	395	}
	396	}
	397	}
	398	}
	399	}
	400
	401	U_NAMESPACE_END
	402
	403	#endif /* #if !UCONFIG_NO_TRANSLITERATION */
	404
	405	//eof