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

/*
 *******************************************************************************
 *   Copyright (C) 1997-2009, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 *******************************************************************************
 *   Date        Name        Description
 *   06/21/00    aliu        Creation.
 *******************************************************************************
 */

#include "unicode/utypes.h"

#if !UCONFIG_NO_TRANSLITERATION

#include "unicode/utrans.h"
#include "unicode/putil.h"
#include "unicode/rep.h"
#include "unicode/translit.h"
#include "unicode/unifilt.h"
#include "unicode/uniset.h"
#include "unicode/ustring.h"
#include "unicode/uenum.h"
#include "uenumimp.h"
#include "cpputils.h"
#include "rbt.h"

// Following macro is to be followed by <return value>';' or just ';'
#define utrans_ENTRY(s) if ((s)==NULL || U_FAILURE(*(s))) return

/********************************************************************
 * Replaceable-UReplaceableCallbacks glue
 ********************************************************************/

/**
 * Make a UReplaceable + UReplaceableCallbacks into a Replaceable object.
 */
U_NAMESPACE_BEGIN
class ReplaceableGlue : public Replaceable {

    UReplaceable *rep;
    UReplaceableCallbacks *func;

public:

    ReplaceableGlue(UReplaceable *replaceable,
                    UReplaceableCallbacks *funcCallback);

    virtual ~ReplaceableGlue();

    virtual void handleReplaceBetween(int32_t start,
                                      int32_t limit,
                                      const UnicodeString& text);

    virtual void extractBetween(int32_t start,
                                int32_t limit,
                                UnicodeString& target) const;

    virtual void copy(int32_t start, int32_t limit, int32_t dest);

    // virtual Replaceable *clone() const { return NULL; } same as default

    /**
     * ICU "poor man's RTTI", returns a UClassID for the actual class.
     *
     * @draft ICU 2.2
     */
    virtual UClassID getDynamicClassID() const;

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

protected:

    virtual int32_t getLength() const;

    virtual UChar getCharAt(int32_t offset) const;

    virtual UChar32 getChar32At(int32_t offset) const;
};

UOBJECT_DEFINE_RTTI_IMPLEMENTATION(ReplaceableGlue)

ReplaceableGlue::ReplaceableGlue(UReplaceable *replaceable,
                                 UReplaceableCallbacks *funcCallback)
  : Replaceable()
{
    this->rep = replaceable;
    this->func = funcCallback;
}

ReplaceableGlue::~ReplaceableGlue() {}

int32_t ReplaceableGlue::getLength() const {
    return (*func->length)(rep);
}

UChar ReplaceableGlue::getCharAt(int32_t offset) const {
    return (*func->charAt)(rep, offset);
}

UChar32 ReplaceableGlue::getChar32At(int32_t offset) const {
    return (*func->char32At)(rep, offset);
}

void ReplaceableGlue::handleReplaceBetween(int32_t start,
                          int32_t limit,
                          const UnicodeString& text) {
    (*func->replace)(rep, start, limit, text.getBuffer(), text.length());
}

void ReplaceableGlue::extractBetween(int32_t start,
                                     int32_t limit,
                                     UnicodeString& target) const {
    (*func->extract)(rep, start, limit, target.getBuffer(limit-start));
    target.releaseBuffer(limit-start);
}

void ReplaceableGlue::copy(int32_t start, int32_t limit, int32_t dest) {
    (*func->copy)(rep, start, limit, dest);
}
U_NAMESPACE_END
/********************************************************************
 * General API
 ********************************************************************/
U_NAMESPACE_USE

U_CAPI UTransliterator* U_EXPORT2
utrans_openU(const UChar *id,
             int32_t idLength,
             UTransDirection dir,
             const UChar *rules,
             int32_t rulesLength,
             UParseError *parseError,
             UErrorCode *status) {
    if(status==NULL || U_FAILURE(*status)) {
        return NULL;
    }
    if (id == NULL) {
        *status = U_ILLEGAL_ARGUMENT_ERROR;
        return NULL;
    }
    UParseError temp;
    
    if(parseError == NULL){
        parseError = &temp;
    }
    
    UnicodeString ID(idLength<0, id, idLength); // r-o alias

    if(rules==NULL){

        Transliterator *trans = NULL;

        trans = Transliterator::createInstance(ID, dir, *parseError, *status);
        
        if(U_FAILURE(*status)){
            return NULL;
        }
        return (UTransliterator*) trans;
    }else{
        UnicodeString ruleStr(rulesLength < 0,
                              rules,
                              rulesLength); // r-o alias

        Transliterator *trans = NULL;
        trans = Transliterator::createFromRules(ID, ruleStr, dir, *parseError, *status); 
        if(U_FAILURE(*status)) { 
            return NULL;
        }

        return (UTransliterator*) trans;
    }
}

U_CAPI UTransliterator* U_EXPORT2
utrans_open(const char* id,
            UTransDirection dir,
            const UChar* rules,         /* may be Null */
            int32_t rulesLength,        /* -1 if null-terminated */ 
            UParseError* parseError,    /* may be Null */
            UErrorCode* status) {
    UnicodeString ID(id, -1, US_INV); // use invariant converter
    return utrans_openU(ID.getBuffer(), ID.length(), dir,
                        rules, rulesLength,
                        parseError, status);
}

U_CAPI UTransliterator* U_EXPORT2
utrans_openInverse(const UTransliterator* trans,
                   UErrorCode* status) {

    utrans_ENTRY(status) NULL;

    UTransliterator* result =
        (UTransliterator*) ((Transliterator*) trans)->createInverse(*status);

    return result;
}

U_CAPI UTransliterator* U_EXPORT2
utrans_clone(const UTransliterator* trans,
             UErrorCode* status) {

    utrans_ENTRY(status) NULL;

    if (trans == NULL) {
        *status = U_ILLEGAL_ARGUMENT_ERROR;
        return NULL;
    }

    Transliterator *t = ((Transliterator*) trans)->clone();
    if (t == NULL) {
        *status = U_MEMORY_ALLOCATION_ERROR;
    }
    return (UTransliterator*) t;
}

U_CAPI void U_EXPORT2
utrans_close(UTransliterator* trans) {
    delete (Transliterator*) trans;
}

U_CAPI const UChar * U_EXPORT2
utrans_getUnicodeID(const UTransliterator *trans,
                    int32_t *resultLength) {
    // Transliterator keeps its ID NUL-terminated
    const UnicodeString &ID=((Transliterator*) trans)->getID();
    if(resultLength!=NULL) {
        *resultLength=ID.length();
    }
    return ID.getBuffer();
}

U_CAPI int32_t U_EXPORT2
utrans_getID(const UTransliterator* trans,
             char* buf,
             int32_t bufCapacity) {
    return ((Transliterator*) trans)->getID().extract(0, 0x7fffffff, buf, bufCapacity, US_INV);
}

U_CAPI void U_EXPORT2
utrans_register(UTransliterator* adoptedTrans,
                UErrorCode* status) {
    utrans_ENTRY(status);
    // status currently ignored; may remove later
    Transliterator::registerInstance((Transliterator*) adoptedTrans);
}

U_CAPI void U_EXPORT2
utrans_unregisterID(const UChar* id, int32_t idLength) {
    UnicodeString ID(idLength<0, id, idLength); // r-o alias
    Transliterator::unregister(ID);
}

U_CAPI void U_EXPORT2
utrans_unregister(const char* id) {
    UnicodeString ID(id, -1, US_INV); // use invariant converter
    Transliterator::unregister(ID);
}

U_CAPI void U_EXPORT2
utrans_setFilter(UTransliterator* trans,
                 const UChar* filterPattern,
                 int32_t filterPatternLen,
                 UErrorCode* status) {

    utrans_ENTRY(status);
    UnicodeFilter* filter = NULL;
    if (filterPattern != NULL && *filterPattern != 0) {
        // Create read only alias of filterPattern:
        UnicodeString pat(filterPatternLen < 0, filterPattern, filterPatternLen);
        filter = new UnicodeSet(pat, *status);
        /* test for NULL */
        if (filter == NULL) {
            *status = U_MEMORY_ALLOCATION_ERROR;
            return;
        }
        if (U_FAILURE(*status)) {
            delete filter;
            filter = NULL;
        }
    }
    ((Transliterator*) trans)->adoptFilter(filter);
}

U_CAPI int32_t U_EXPORT2
utrans_countAvailableIDs(void) {
    return Transliterator::countAvailableIDs();
}

U_CAPI int32_t U_EXPORT2
utrans_getAvailableID(int32_t index,
                      char* buf, // may be NULL
                      int32_t bufCapacity) {
    return Transliterator::getAvailableID(index).extract(0, 0x7fffffff, buf, bufCapacity, US_INV);
}

/* Transliterator UEnumeration ---------------------------------------------- */

typedef struct UTransEnumeration {
    UEnumeration uenum;
    int32_t index, count;
} UTransEnumeration;

U_CDECL_BEGIN
static int32_t U_CALLCONV
utrans_enum_count(UEnumeration *uenum, UErrorCode *pErrorCode) {
    if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) {
        return 0;
    }
    return ((UTransEnumeration *)uenum)->count;
}

static const UChar* U_CALLCONV
utrans_enum_unext(UEnumeration *uenum,
                  int32_t* resultLength,
                  UErrorCode *pErrorCode) {
    if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) {
        return 0;
    }

    UTransEnumeration *ute=(UTransEnumeration *)uenum;
    int32_t index=ute->index;
    if(index<ute->count) {
        const UnicodeString &ID=Transliterator::getAvailableID(index);
        ute->index=index+1;
        if(resultLength!=NULL) {
            *resultLength=ID.length();
        }
        // Transliterator keeps its ID NUL-terminated
        return ID.getBuffer();
    }

    if(resultLength!=NULL) {
        *resultLength=0;
    }
    return NULL;
}

static void U_CALLCONV
utrans_enum_reset(UEnumeration *uenum, UErrorCode *pErrorCode) {
    if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) {
        return;
    }

    UTransEnumeration *ute=(UTransEnumeration *)uenum;
    ute->index=0;
    ute->count=Transliterator::countAvailableIDs();
}

static void U_CALLCONV
utrans_enum_close(UEnumeration *uenum) {
    uprv_free(uenum);
}
U_CDECL_END

static const UEnumeration utransEnumeration={
    NULL,
    NULL,
    utrans_enum_close,
    utrans_enum_count,
    utrans_enum_unext,
    uenum_nextDefault,
    utrans_enum_reset
};

U_CAPI UEnumeration * U_EXPORT2
utrans_openIDs(UErrorCode *pErrorCode) {
    UTransEnumeration *ute;

    if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) {
        return NULL;
    }

    ute=(UTransEnumeration *)uprv_malloc(sizeof(UTransEnumeration));
    if(ute==NULL) {
        *pErrorCode=U_MEMORY_ALLOCATION_ERROR;
        return NULL;
    }

    ute->uenum=utransEnumeration;
    ute->index=0;
    ute->count=Transliterator::countAvailableIDs();
    return (UEnumeration *)ute;
}

/********************************************************************
 * Transliteration API
 ********************************************************************/

U_CAPI void U_EXPORT2
utrans_trans(const UTransliterator* trans,
             UReplaceable* rep,
             UReplaceableCallbacks* repFunc,
             int32_t start,
             int32_t* limit,
             UErrorCode* status) {

    utrans_ENTRY(status);

    if (trans == 0 || rep == 0 || repFunc == 0 || limit == 0) {
        *status = U_ILLEGAL_ARGUMENT_ERROR;
        return;
    }

    ReplaceableGlue r(rep, repFunc);

    *limit = ((Transliterator*) trans)->transliterate(r, start, *limit);
}

U_CAPI void U_EXPORT2
utrans_transIncremental(const UTransliterator* trans,
                        UReplaceable* rep,
                        UReplaceableCallbacks* repFunc,
                        UTransPosition* pos,
                        UErrorCode* status) {

    utrans_ENTRY(status);

    if (trans == 0 || rep == 0 || repFunc == 0 || pos == 0) {
        *status = U_ILLEGAL_ARGUMENT_ERROR;
        return;
    }

    ReplaceableGlue r(rep, repFunc);

    ((Transliterator*) trans)->transliterate(r, *pos, *status);
}

U_CAPI void U_EXPORT2
utrans_transUChars(const UTransliterator* trans,
                   UChar* text,
                   int32_t* textLength,
                   int32_t textCapacity,
                   int32_t start,
                   int32_t* limit,
                   UErrorCode* status) {

    utrans_ENTRY(status);

    if (trans == 0 || text == 0 || limit == 0) {
        *status = U_ILLEGAL_ARGUMENT_ERROR;
        return;
    }
 
    int32_t textLen = (textLength == NULL || *textLength < 0)
        ? u_strlen(text) : *textLength;
    // writeable alias: for this ct, len CANNOT be -1 (why?)
    UnicodeString str(text, textLen, textCapacity);

    *limit = ((Transliterator*) trans)->transliterate(str, start, *limit);

    // Copy the string buffer back to text (only if necessary)
    // and fill in *neededCapacity (if neededCapacity != NULL).
    textLen = str.extract(text, textCapacity, *status);
    if(textLength != NULL) {
        *textLength = textLen;
    }
}

U_CAPI void U_EXPORT2
utrans_transIncrementalUChars(const UTransliterator* trans,
                              UChar* text,
                              int32_t* textLength,
                              int32_t textCapacity,
                              UTransPosition* pos,
                              UErrorCode* status) {

    utrans_ENTRY(status);

    if (trans == 0 || text == 0 || pos == 0) {
        *status = U_ILLEGAL_ARGUMENT_ERROR;
        return;
    }

    int32_t textLen = (textLength == NULL || *textLength < 0)
        ? u_strlen(text) : *textLength;
    // writeable alias: for this ct, len CANNOT be -1 (why?)
    UnicodeString str(text, textLen, textCapacity);

    ((Transliterator*) trans)->transliterate(str, *pos, *status);

    // Copy the string buffer back to text (only if necessary)
    // and fill in *neededCapacity (if neededCapacity != NULL).
    textLen = str.extract(text, textCapacity, *status);
    if(textLength != NULL) {
        *textLength = textLen;
    }
}

#endif /* #if !UCONFIG_NO_TRANSLITERATION */
Commit	Line	Data
b75a7d8f	1	/*
374ca955	2	*******************************************************************************
729e4ab9	3	* Copyright (C) 1997-2009, International Business Machines
374ca955 A	4	* Corporation and others. All Rights Reserved.
	5	*******************************************************************************
	6	* Date Name Description
	7	* 06/21/00 aliu Creation.
	8	*******************************************************************************
	9	*/
b75a7d8f A	10
	11	#include "unicode/utypes.h"
	12
	13	#if !UCONFIG_NO_TRANSLITERATION
	14
	15	#include "unicode/utrans.h"
	16	#include "unicode/putil.h"
	17	#include "unicode/rep.h"
	18	#include "unicode/translit.h"
	19	#include "unicode/unifilt.h"
	20	#include "unicode/uniset.h"
	21	#include "unicode/ustring.h"
374ca955 A	22	#include "unicode/uenum.h"
374ca955 A	23	#include "uenumimp.h"
b75a7d8f A	24	#include "cpputils.h"
	25	#include "rbt.h"
	26
	27	// Following macro is to be followed by <return value>';' or just ';'
	28	#define utrans_ENTRY(s) if ((s)==NULL \|\| U_FAILURE(*(s))) return
	29
	30	/********************************************************************
	31	* Replaceable-UReplaceableCallbacks glue
	32	********************************************************************/
	33
	34	/**
	35	* Make a UReplaceable + UReplaceableCallbacks into a Replaceable object.
	36	*/
	37	U_NAMESPACE_BEGIN
	38	class ReplaceableGlue : public Replaceable {
	39
	40	UReplaceable *rep;
	41	UReplaceableCallbacks *func;
	42
b75a7d8f A	43	public:
	44
	45	ReplaceableGlue(UReplaceable *replaceable,
	46	UReplaceableCallbacks *funcCallback);
	47
	48	virtual ~ReplaceableGlue();
	49
	50	virtual void handleReplaceBetween(int32_t start,
	51	int32_t limit,
	52	const UnicodeString& text);
	53
	54	virtual void extractBetween(int32_t start,
	55	int32_t limit,
	56	UnicodeString& target) const;
	57
	58	virtual void copy(int32_t start, int32_t limit, int32_t dest);
	59
	60	// virtual Replaceable *clone() const { return NULL; } same as default
	61
	62	/**
	63	* ICU "poor man's RTTI", returns a UClassID for the actual class.
	64	*
	65	* @draft ICU 2.2
	66	*/
73c04bcf	67	virtual UClassID getDynamicClassID() const;
b75a7d8f A	68
	69	/**
	70	* ICU "poor man's RTTI", returns a UClassID for this class.
	71	*
	72	* @draft ICU 2.2
	73	*/
73c04bcf	74	static UClassID U_EXPORT2 getStaticClassID();
b75a7d8f A	75
	76	protected:
	77
	78	virtual int32_t getLength() const;
	79
	80	virtual UChar getCharAt(int32_t offset) const;
	81
	82	virtual UChar32 getChar32At(int32_t offset) const;
	83	};
	84
374ca955	85	UOBJECT_DEFINE_RTTI_IMPLEMENTATION(ReplaceableGlue)
b75a7d8f A	86
	87	ReplaceableGlue::ReplaceableGlue(UReplaceable *replaceable,
	88	UReplaceableCallbacks *funcCallback)
	89	: Replaceable()
	90	{
	91	this->rep = replaceable;
	92	this->func = funcCallback;
	93	}
	94
	95	ReplaceableGlue::~ReplaceableGlue() {}
	96
	97	int32_t ReplaceableGlue::getLength() const {
	98	return (*func->length)(rep);
	99	}
	100
	101	UChar ReplaceableGlue::getCharAt(int32_t offset) const {
	102	return (*func->charAt)(rep, offset);
	103	}
	104
	105	UChar32 ReplaceableGlue::getChar32At(int32_t offset) const {
	106	return (*func->char32At)(rep, offset);
	107	}
	108
	109	void ReplaceableGlue::handleReplaceBetween(int32_t start,
	110	int32_t limit,
	111	const UnicodeString& text) {
	112	(*func->replace)(rep, start, limit, text.getBuffer(), text.length());
	113	}
	114
	115	void ReplaceableGlue::extractBetween(int32_t start,
	116	int32_t limit,
	117	UnicodeString& target) const {
	118	(*func->extract)(rep, start, limit, target.getBuffer(limit-start));
	119	target.releaseBuffer(limit-start);
	120	}
	121
	122	void ReplaceableGlue::copy(int32_t start, int32_t limit, int32_t dest) {
	123	(*func->copy)(rep, start, limit, dest);
	124	}
	125	U_NAMESPACE_END
	126	/********************************************************************
	127	* General API
	128	********************************************************************/
	129	U_NAMESPACE_USE
b75a7d8f	130
374ca955 A	131	U_CAPI UTransliterator* U_EXPORT2
	132	utrans_openU(const UChar *id,
	133	int32_t idLength,
	134	UTransDirection dir,
	135	const UChar *rules,
	136	int32_t rulesLength,
	137	UParseError *parseError,
	138	UErrorCode *status) {
	139	if(status==NULL \|\| U_FAILURE(*status)) {
b75a7d8f A	140	return NULL;
b75a7d8f A	141	}
b75a7d8f A	142	if (id == NULL) {
	143	*status = U_ILLEGAL_ARGUMENT_ERROR;
	144	return NULL;
	145	}
	146	UParseError temp;
	147
	148	if(parseError == NULL){
	149	parseError = &temp;
	150	}
	151
374ca955	152	UnicodeString ID(idLength<0, id, idLength); // r-o alias
b75a7d8f A	153
	154	if(rules==NULL){
	155
	156	Transliterator *trans = NULL;
	157
	158	trans = Transliterator::createInstance(ID, dir, parseError, status);
	159
	160	if(U_FAILURE(*status)){
	161	return NULL;
	162	}
	163	return (UTransliterator*) trans;
	164	}else{
	165	UnicodeString ruleStr(rulesLength < 0,
	166	rules,
	167	rulesLength); // r-o alias
	168
729e4ab9 A	169	Transliterator *trans = NULL;
	170	trans = Transliterator::createFromRules(ID, ruleStr, dir, parseError, status);
	171	if(U_FAILURE(*status)) {
	172	return NULL;
b75a7d8f	173	}
729e4ab9	174
b75a7d8f A	175	return (UTransliterator*) trans;
	176	}
	177	}
	178
374ca955 A	179	U_CAPI UTransliterator* U_EXPORT2
	180	utrans_open(const char* id,
	181	UTransDirection dir,
	182	const UChar* rules, /* may be Null */
	183	int32_t rulesLength, /* -1 if null-terminated */
	184	UParseError* parseError, /* may be Null */
	185	UErrorCode* status) {
73c04bcf	186	UnicodeString ID(id, -1, US_INV); // use invariant converter
374ca955 A	187	return utrans_openU(ID.getBuffer(), ID.length(), dir,
	188	rules, rulesLength,
	189	parseError, status);
	190	}
	191
b75a7d8f A	192	U_CAPI UTransliterator* U_EXPORT2
	193	utrans_openInverse(const UTransliterator* trans,
	194	UErrorCode* status) {
	195
	196	utrans_ENTRY(status) NULL;
	197
	198	UTransliterator* result =
	199	(UTransliterator) ((Transliterator) trans)->createInverse(*status);
	200
	201	return result;
	202	}
	203
	204	U_CAPI UTransliterator* U_EXPORT2
	205	utrans_clone(const UTransliterator* trans,
	206	UErrorCode* status) {
	207
	208	utrans_ENTRY(status) NULL;
	209
	210	if (trans == NULL) {
	211	*status = U_ILLEGAL_ARGUMENT_ERROR;
	212	return NULL;
	213	}
	214
	215	Transliterator t = ((Transliterator) trans)->clone();
	216	if (t == NULL) {
	217	*status = U_MEMORY_ALLOCATION_ERROR;
	218	}
	219	return (UTransliterator*) t;
	220	}
	221
	222	U_CAPI void U_EXPORT2
	223	utrans_close(UTransliterator* trans) {
	224	delete (Transliterator*) trans;
	225	}
	226
374ca955 A	227	U_CAPI const UChar * U_EXPORT2
	228	utrans_getUnicodeID(const UTransliterator *trans,
	229	int32_t *resultLength) {
	230	// Transliterator keeps its ID NUL-terminated
	231	const UnicodeString &ID=((Transliterator*) trans)->getID();
	232	if(resultLength!=NULL) {
	233	*resultLength=ID.length();
	234	}
	235	return ID.getBuffer();
	236	}
	237
b75a7d8f A	238	U_CAPI int32_t U_EXPORT2
	239	utrans_getID(const UTransliterator* trans,
	240	char* buf,
	241	int32_t bufCapacity) {
73c04bcf	242	return ((Transliterator*) trans)->getID().extract(0, 0x7fffffff, buf, bufCapacity, US_INV);
b75a7d8f A	243	}
	244
	245	U_CAPI void U_EXPORT2
	246	utrans_register(UTransliterator* adoptedTrans,
	247	UErrorCode* status) {
	248	utrans_ENTRY(status);
	249	// status currently ignored; may remove later
	250	Transliterator::registerInstance((Transliterator*) adoptedTrans);
	251	}
	252
374ca955 A	253	U_CAPI void U_EXPORT2
	254	utrans_unregisterID(const UChar* id, int32_t idLength) {
	255	UnicodeString ID(idLength<0, id, idLength); // r-o alias
	256	Transliterator::unregister(ID);
	257	}
	258
b75a7d8f A	259	U_CAPI void U_EXPORT2
b75a7d8f A	260	utrans_unregister(const char* id) {
73c04bcf	261	UnicodeString ID(id, -1, US_INV); // use invariant converter
b75a7d8f A	262	Transliterator::unregister(ID);
	263	}
	264
	265	U_CAPI void U_EXPORT2
	266	utrans_setFilter(UTransliterator* trans,
	267	const UChar* filterPattern,
	268	int32_t filterPatternLen,
	269	UErrorCode* status) {
	270
	271	utrans_ENTRY(status);
	272	UnicodeFilter* filter = NULL;
	273	if (filterPattern != NULL && *filterPattern != 0) {
	274	// Create read only alias of filterPattern:
	275	UnicodeString pat(filterPatternLen < 0, filterPattern, filterPatternLen);
	276	filter = new UnicodeSet(pat, *status);
	277	/* test for NULL */
	278	if (filter == NULL) {
	279	*status = U_MEMORY_ALLOCATION_ERROR;
	280	return;
	281	}
	282	if (U_FAILURE(*status)) {
	283	delete filter;
	284	filter = NULL;
	285	}
	286	}
	287	((Transliterator*) trans)->adoptFilter(filter);
	288	}
	289
	290	U_CAPI int32_t U_EXPORT2
	291	utrans_countAvailableIDs(void) {
	292	return Transliterator::countAvailableIDs();
	293	}
	294
	295	U_CAPI int32_t U_EXPORT2
	296	utrans_getAvailableID(int32_t index,
	297	char* buf, // may be NULL
	298	int32_t bufCapacity) {
73c04bcf	299	return Transliterator::getAvailableID(index).extract(0, 0x7fffffff, buf, bufCapacity, US_INV);
b75a7d8f A	300	}
b75a7d8f A	301
374ca955 A	302	/* Transliterator UEnumeration ---------------------------------------------- */
	303
	304	typedef struct UTransEnumeration {
	305	UEnumeration uenum;
	306	int32_t index, count;
	307	} UTransEnumeration;
	308
	309	U_CDECL_BEGIN
	310	static int32_t U_CALLCONV
	311	utrans_enum_count(UEnumeration uenum, UErrorCode pErrorCode) {
	312	if(pErrorCode==NULL \|\| U_FAILURE(*pErrorCode)) {
	313	return 0;
	314	}
	315	return ((UTransEnumeration *)uenum)->count;
	316	}
	317
	318	static const UChar* U_CALLCONV
	319	utrans_enum_unext(UEnumeration *uenum,
	320	int32_t* resultLength,
	321	UErrorCode *pErrorCode) {
	322	if(pErrorCode==NULL \|\| U_FAILURE(*pErrorCode)) {
	323	return 0;
	324	}
	325
	326	UTransEnumeration ute=(UTransEnumeration )uenum;
	327	int32_t index=ute->index;
	328	if(index<ute->count) {
	329	const UnicodeString &ID=Transliterator::getAvailableID(index);
	330	ute->index=index+1;
	331	if(resultLength!=NULL) {
	332	*resultLength=ID.length();
	333	}
	334	// Transliterator keeps its ID NUL-terminated
	335	return ID.getBuffer();
	336	}
	337
	338	if(resultLength!=NULL) {
	339	*resultLength=0;
	340	}
	341	return NULL;
	342	}
	343
	344	static void U_CALLCONV
	345	utrans_enum_reset(UEnumeration uenum, UErrorCode pErrorCode) {
	346	if(pErrorCode==NULL \|\| U_FAILURE(*pErrorCode)) {
	347	return;
	348	}
	349
	350	UTransEnumeration ute=(UTransEnumeration )uenum;
	351	ute->index=0;
	352	ute->count=Transliterator::countAvailableIDs();
	353	}
	354
	355	static void U_CALLCONV
	356	utrans_enum_close(UEnumeration *uenum) {
	357	uprv_free(uenum);
	358	}
	359	U_CDECL_END
	360
	361	static const UEnumeration utransEnumeration={
	362	NULL,
	363	NULL,
	364	utrans_enum_close,
	365	utrans_enum_count,
366	utrans_enum_unext,
367	uenum_nextDefault,
368	utrans_enum_reset
369	};
370
371	U_CAPI UEnumeration * U_EXPORT2
372	utrans_openIDs(UErrorCode *pErrorCode) {
373	UTransEnumeration *ute;
374
375	if(pErrorCode==NULL \|\| U_FAILURE(*pErrorCode)) {
376	return NULL;
377	}
378
379	ute=(UTransEnumeration *)uprv_malloc(sizeof(UTransEnumeration));
380	if(ute==NULL) {
381	*pErrorCode=U_MEMORY_ALLOCATION_ERROR;
382	return NULL;
383	}
384
385	ute->uenum=utransEnumeration;
386	ute->index=0;
387	ute->count=Transliterator::countAvailableIDs();
388	return (UEnumeration *)ute;
389	}
390
b75a7d8f A	391	/********************************************************************
	392	* Transliteration API
	393	********************************************************************/
	394
	395	U_CAPI void U_EXPORT2
	396	utrans_trans(const UTransliterator* trans,
	397	UReplaceable* rep,
	398	UReplaceableCallbacks* repFunc,
	399	int32_t start,
	400	int32_t* limit,
	401	UErrorCode* status) {
	402
	403	utrans_ENTRY(status);
	404
	405	if (trans == 0 \|\| rep == 0 \|\| repFunc == 0 \|\| limit == 0) {
	406	*status = U_ILLEGAL_ARGUMENT_ERROR;
	407	return;
	408	}
	409
	410	ReplaceableGlue r(rep, repFunc);
	411
	412	limit = ((Transliterator) trans)->transliterate(r, start, *limit);
	413	}
	414
	415	U_CAPI void U_EXPORT2
	416	utrans_transIncremental(const UTransliterator* trans,
	417	UReplaceable* rep,
	418	UReplaceableCallbacks* repFunc,
	419	UTransPosition* pos,
	420	UErrorCode* status) {
	421
	422	utrans_ENTRY(status);
	423
	424	if (trans == 0 \|\| rep == 0 \|\| repFunc == 0 \|\| pos == 0) {
	425	*status = U_ILLEGAL_ARGUMENT_ERROR;
	426	return;
	427	}
	428
	429	ReplaceableGlue r(rep, repFunc);
	430
	431	((Transliterator) trans)->transliterate(r, pos, *status);
	432	}
	433
	434	U_CAPI void U_EXPORT2
	435	utrans_transUChars(const UTransliterator* trans,
	436	UChar* text,
	437	int32_t* textLength,
	438	int32_t textCapacity,
	439	int32_t start,
	440	int32_t* limit,
	441	UErrorCode* status) {
	442
	443	utrans_ENTRY(status);
	444
	445	if (trans == 0 \|\| text == 0 \|\| limit == 0) {
	446	*status = U_ILLEGAL_ARGUMENT_ERROR;
	447	return;
	448	}
	449
	450	int32_t textLen = (textLength == NULL \|\| *textLength < 0)
	451	? u_strlen(text) : *textLength;
	452	// writeable alias: for this ct, len CANNOT be -1 (why?)
	453	UnicodeString str(text, textLen, textCapacity);
	454
455	limit = ((Transliterator) trans)->transliterate(str, start, *limit);
456
457	// Copy the string buffer back to text (only if necessary)
458	// and fill in *neededCapacity (if neededCapacity != NULL).
459	textLen = str.extract(text, textCapacity, *status);
460	if(textLength != NULL) {
461	*textLength = textLen;
462	}
463	}
464
465	U_CAPI void U_EXPORT2
466	utrans_transIncrementalUChars(const UTransliterator* trans,
467	UChar* text,
468	int32_t* textLength,
469	int32_t textCapacity,
470	UTransPosition* pos,
471	UErrorCode* status) {
472
473	utrans_ENTRY(status);
474
475	if (trans == 0 \|\| text == 0 \|\| pos == 0) {
476	*status = U_ILLEGAL_ARGUMENT_ERROR;
477	return;
478	}
479
480	int32_t textLen = (textLength == NULL \|\| *textLength < 0)
481	? u_strlen(text) : *textLength;
482	// writeable alias: for this ct, len CANNOT be -1 (why?)
483	UnicodeString str(text, textLen, textCapacity);
484
485	((Transliterator) trans)->transliterate(str, pos, *status);
486
487	// Copy the string buffer back to text (only if necessary)
488	// and fill in *neededCapacity (if neededCapacity != NULL).
489	textLen = str.extract(text, textCapacity, *status);
490	if(textLength != NULL) {
491	*textLength = textLen;
492	}
493	}
494
495	#endif /* #if !UCONFIG_NO_TRANSLITERATION */