[apple/icu.git] / icuSources / common / ucnv_bld.h

// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
**********************************************************************
*   Copyright (C) 1999-2015 International Business Machines
*   Corporation and others.  All Rights Reserved.
**********************************************************************
*
*
*  ucnv_bld.h:
*  Contains internal data structure definitions
* Created by Bertrand A. Damiba
*
*   Change history:
*
*   06/29/2000  helena      Major rewrite of the callback APIs.
*/

#ifndef UCNV_BLD_H
#define UCNV_BLD_H

#include "unicode/utypes.h"

#if !UCONFIG_NO_CONVERSION

#include "unicode/ucnv.h"
#include "unicode/ucnv_err.h"
#include "unicode/utf16.h"
#include "ucnv_cnv.h"
#include "ucnvmbcs.h"
#include "ucnv_ext.h"
#include "udataswp.h"

/* size of the overflow buffers in UConverter, enough for escaping callbacks */
#define UCNV_ERROR_BUFFER_LENGTH 32

/* at most 4 bytes per substitution character (part of .cnv file format! see UConverterStaticData) */
#define UCNV_MAX_SUBCHAR_LEN 4

/* at most 8 bytes per character in toUBytes[] (UTF-8 uses up to 6) */
#define UCNV_MAX_CHAR_LEN 8

/* converter options bits */
#define UCNV_OPTION_VERSION     0xf
#define UCNV_OPTION_SWAP_LFNL   0x10

#define UCNV_GET_VERSION(cnv) ((cnv)->options&UCNV_OPTION_VERSION)

U_CDECL_BEGIN /* We must declare the following as 'extern "C"' so that if ucnv
                 itself is compiled under C++, the linkage of the funcptrs will
                 work.
              */

union UConverterTable {
    UConverterMBCSTable mbcs;
};

typedef union UConverterTable UConverterTable;

struct UConverterImpl;
typedef struct UConverterImpl UConverterImpl;

/** values for the unicodeMask */
#define UCNV_HAS_SUPPLEMENTARY 1
#define UCNV_HAS_SURROGATES    2

typedef struct UConverterStaticData {   /* +offset: size */
    uint32_t structSize;                /* +0: 4 Size of this structure */
    
    char name 
      [UCNV_MAX_CONVERTER_NAME_LENGTH]; /* +4: 60  internal name of the converter- invariant chars */

    int32_t codepage;               /* +64: 4 codepage # (now IBM-$codepage) */

    int8_t platform;                /* +68: 1 platform of the converter (only IBM now) */
    int8_t conversionType;          /* +69: 1 conversion type */

    int8_t minBytesPerChar;         /* +70: 1 Minimum # bytes per char in this codepage */
    int8_t maxBytesPerChar;         /* +71: 1 Maximum # bytes output per UChar in this codepage */

    uint8_t subChar[UCNV_MAX_SUBCHAR_LEN]; /* +72: 4  [note:  4 and 8 byte boundary] */
    int8_t subCharLen;              /* +76: 1 */
    
    uint8_t hasToUnicodeFallback;   /* +77: 1 UBool needs to be changed to UBool to be consistent across platform */
    uint8_t hasFromUnicodeFallback; /* +78: 1 */
    uint8_t unicodeMask;            /* +79: 1  bit 0: has supplementary  bit 1: has single surrogates */
    uint8_t subChar1;               /* +80: 1  single-byte substitution character for IBM MBCS (0 if none) */
    uint8_t reserved[19];           /* +81: 19 to round out the structure */
                                    /* total size: 100 */
} UConverterStaticData;

/*
 * Defines the UConverterSharedData struct,
 * the immutable, shared part of UConverter.
 */
struct UConverterSharedData {
    uint32_t structSize;            /* Size of this structure */
    uint32_t referenceCounter;      /* used to count number of clients, unused for static/immutable SharedData */

    const void *dataMemory;         /* from udata_openChoice() - for cleanup */

    const UConverterStaticData *staticData; /* pointer to the static (non changing) data. */

    UBool                sharedDataCached;   /* TRUE:  shared data is in cache, don't destroy on ucnv_close() if 0 ref.  FALSE: shared data isn't in the cache, do attempt to clean it up if the ref is 0 */
    /** If FALSE, then referenceCounter is not used. Must not change after initialization. */
    UBool isReferenceCounted;

    const UConverterImpl *impl;     /* vtable-style struct of mostly function pointers */

    /*initial values of some members of the mutable part of object */
    uint32_t toUnicodeStatus;

    /*
     * Shared data structures currently come in two flavors:
     * - readonly for built-in algorithmic converters
     * - allocated for MBCS, with a pointer to an allocated UConverterTable
     *   which always has a UConverterMBCSTable
     *
     * To eliminate one allocation, I am making the UConverterMBCSTable
     * a member of the shared data.
     *
     * markus 2003-nov-07
     */
    UConverterMBCSTable mbcs;
};

/** UConverterSharedData initializer for static, non-reference-counted converters. */
#define UCNV_IMMUTABLE_SHARED_DATA_INITIALIZER(pStaticData, pImpl) \
    { \
        sizeof(UConverterSharedData), ~((uint32_t)0), \
        NULL, pStaticData, FALSE, FALSE, pImpl, \
        0, UCNV_MBCS_TABLE_INITIALIZER \
    }

/* Defines a UConverter, the lightweight mutable part the user sees */

struct UConverter {
    /*
     * Error function pointer called when conversion issues
     * occur during a ucnv_fromUnicode call
     */
    void (U_EXPORT2 *fromUCharErrorBehaviour) (const void *context,
                                     UConverterFromUnicodeArgs *args,
                                     const UChar *codeUnits,
                                     int32_t length,
                                     UChar32 codePoint,
                                     UConverterCallbackReason reason,
                                     UErrorCode *);
    /*
     * Error function pointer called when conversion issues
     * occur during a ucnv_toUnicode call
     */
    void (U_EXPORT2 *fromCharErrorBehaviour) (const void *context,
                                    UConverterToUnicodeArgs *args,
                                    const char *codeUnits,
                                    int32_t length,
                                    UConverterCallbackReason reason,
                                    UErrorCode *);

    /*
     * Pointer to additional data that depends on the converter type.
     * Used by ISO 2022, SCSU, GB 18030 converters, possibly more.
     */
    void *extraInfo;

    const void *fromUContext;
    const void *toUContext;

    /*
     * Pointer to charset bytes for substitution string if subCharLen>0,
     * or pointer to Unicode string (UChar *) if subCharLen<0.
     * subCharLen==0 is equivalent to using a skip callback.
     * If the pointer is !=subUChars then it is allocated with
     * UCNV_ERROR_BUFFER_LENGTH * U_SIZEOF_UCHAR bytes.
     * The subUChars field is declared as UChar[] not uint8_t[] to
     * guarantee alignment for UChars.
     */
    uint8_t *subChars;

    UConverterSharedData *sharedData;   /* Pointer to the shared immutable part of the converter object */

    uint32_t options; /* options flags from UConverterOpen, may contain additional bits */

    UBool sharedDataIsCached;  /* TRUE:  shared data is in cache, don't destroy on ucnv_close() if 0 ref.  FALSE: shared data isn't in the cache, do attempt to clean it up if the ref is 0 */
    UBool isCopyLocal;  /* TRUE if UConverter is not owned and not released in ucnv_close() (stack-allocated, safeClone(), etc.) */
    UBool isExtraLocal; /* TRUE if extraInfo is not owned and not released in ucnv_close() (stack-allocated, safeClone(), etc.) */

    UBool  useFallback;
    int8_t toULength;                   /* number of bytes in toUBytes */
    uint8_t toUBytes[UCNV_MAX_CHAR_LEN-1];/* more "toU status"; keeps the bytes of the current character */
    uint32_t toUnicodeStatus;           /* Used to internalize stream status information */
    int32_t mode;
    uint32_t fromUnicodeStatus;

    /*
     * More fromUnicode() status. Serves 3 purposes:
     * - keeps a lead surrogate between buffers (similar to toUBytes[])
     * - keeps a lead surrogate at the end of the stream,
     *   which the framework handles as truncated input
     * - if the fromUnicode() implementation returns to the framework
     *   (ucnv.c ucnv_fromUnicode()), then the framework calls the callback
     *   for this code point
     */
    UChar32 fromUChar32;

    /*
     * value for ucnv_getMaxCharSize()
     *
     * usually simply copied from the static data, but ucnvmbcs.c modifies
     * the value depending on the converter type and options
     */
    int8_t maxBytesPerUChar;

    int8_t subCharLen;                  /* length of the codepage specific character sequence */
    int8_t invalidCharLength;
    int8_t charErrorBufferLength;       /* number of valid bytes in charErrorBuffer */

    int8_t invalidUCharLength;
    int8_t UCharErrorBufferLength;      /* number of valid UChars in charErrorBuffer */

    uint8_t subChar1;                                   /* single-byte substitution character if different from subChar */
    UBool useSubChar1;
    char invalidCharBuffer[UCNV_MAX_CHAR_LEN];          /* bytes from last error/callback situation */
    uint8_t charErrorBuffer[UCNV_ERROR_BUFFER_LENGTH];  /* codepage output from Error functions */
    UChar subUChars[UCNV_MAX_SUBCHAR_LEN/U_SIZEOF_UCHAR]; /* see subChars documentation */

    UChar invalidUCharBuffer[U16_MAX_LENGTH];           /* UChars from last error/callback situation */
    UChar UCharErrorBuffer[UCNV_ERROR_BUFFER_LENGTH];   /* unicode output from Error functions */

    /* fields for conversion extension */

    /* store previous UChars/chars to continue partial matches */
    UChar32 preFromUFirstCP;                /* >=0: partial match */
    UChar preFromU[UCNV_EXT_MAX_UCHARS];
    char preToU[UCNV_EXT_MAX_BYTES];
    int8_t preFromULength, preToULength;    /* negative: replay */
    int8_t preToUFirstLength;               /* length of first character */

    /* new fields for ICU 4.0 */
    UConverterCallbackReason toUCallbackReason; /* (*fromCharErrorBehaviour) reason, set when error is detected */
};

U_CDECL_END /* end of UConverter */

#define CONVERTER_FILE_EXTENSION ".cnv"


/**
 * Return the number of all converter names.
 * @param pErrorCode The error code
 * @return the number of all converter names
 */
U_CFUNC uint16_t
ucnv_bld_countAvailableConverters(UErrorCode *pErrorCode);

/**
 * Return the (n)th converter name in mixed case, or NULL
 * if there is none (typically, if the data cannot be loaded).
 * 0<=index<ucnv_io_countAvailableConverters().
 * @param n The number specifies which converter name to get
 * @param pErrorCode The error code
 * @return the (n)th converter name in mixed case, or NULL if there is none.
 */
U_CFUNC const char *
ucnv_bld_getAvailableConverter(uint16_t n, UErrorCode *pErrorCode);

/**
 * Load a non-algorithmic converter.
 * If pkg==NULL, then this function must be called inside umtx_lock(&cnvCacheMutex).
 */
U_CAPI UConverterSharedData *
ucnv_load(UConverterLoadArgs *pArgs, UErrorCode *err);

/**
 * Unload a non-algorithmic converter.
 * It must be sharedData->isReferenceCounted
 * and this function must be called inside umtx_lock(&cnvCacheMutex).
 */
U_CAPI void
ucnv_unload(UConverterSharedData *sharedData);

/**
 * Swap ICU .cnv conversion tables. See udataswp.h.
 * @internal
 */
U_CAPI int32_t U_EXPORT2
ucnv_swap(const UDataSwapper *ds,
          const void *inData, int32_t length, void *outData,
          UErrorCode *pErrorCode);

#endif

#endif /* _UCNV_BLD */
Commit	Line	Data
f3c0d7a5 A	1	// © 2016 and later: Unicode, Inc. and others.
f3c0d7a5 A	2	// License & terms of use: http://www.unicode.org/copyright.html
b75a7d8f A	3	/*
b75a7d8f A	4	**********************************************************************
2ca993e8	5	* Copyright (C) 1999-2015 International Business Machines
b75a7d8f A	6	* Corporation and others. All Rights Reserved.
	7	**********************************************************************
	8	*
	9	*
	10	* ucnv_bld.h:
	11	* Contains internal data structure definitions
	12	* Created by Bertrand A. Damiba
	13	*
	14	* Change history:
	15	*
	16	* 06/29/2000 helena Major rewrite of the callback APIs.
	17	*/
	18
	19	#ifndef UCNV_BLD_H
	20	#define UCNV_BLD_H
	21
	22	#include "unicode/utypes.h"
374ca955 A	23
	24	#if !UCONFIG_NO_CONVERSION
	25
b75a7d8f A	26	#include "unicode/ucnv.h"
b75a7d8f A	27	#include "unicode/ucnv_err.h"
4388f060	28	#include "unicode/utf16.h"
374ca955 A	29	#include "ucnv_cnv.h"
	30	#include "ucnvmbcs.h"
	31	#include "ucnv_ext.h"
	32	#include "udataswp.h"
b75a7d8f A	33
	34	/* size of the overflow buffers in UConverter, enough for escaping callbacks */
	35	#define UCNV_ERROR_BUFFER_LENGTH 32
	36
374ca955	37	/* at most 4 bytes per substitution character (part of .cnv file format! see UConverterStaticData) */
b75a7d8f A	38	#define UCNV_MAX_SUBCHAR_LEN 4
b75a7d8f A	39
374ca955 A	40	/* at most 8 bytes per character in toUBytes[] (UTF-8 uses up to 6) */
	41	#define UCNV_MAX_CHAR_LEN 8
	42
b75a7d8f A	43	/* converter options bits */
	44	#define UCNV_OPTION_VERSION 0xf
	45	#define UCNV_OPTION_SWAP_LFNL 0x10
	46
729e4ab9	47	#define UCNV_GET_VERSION(cnv) ((cnv)->options&UCNV_OPTION_VERSION)
b75a7d8f A	48
	49	U_CDECL_BEGIN /* We must declare the following as 'extern "C"' so that if ucnv
	50	itself is compiled under C++, the linkage of the funcptrs will
	51	work.
	52	*/
	53
374ca955 A	54	union UConverterTable {
	55	UConverterMBCSTable mbcs;
	56	};
	57
b75a7d8f A	58	typedef union UConverterTable UConverterTable;
	59
	60	struct UConverterImpl;
	61	typedef struct UConverterImpl UConverterImpl;
	62
	63	/** values for the unicodeMask */
	64	#define UCNV_HAS_SUPPLEMENTARY 1
	65	#define UCNV_HAS_SURROGATES 2
	66
	67	typedef struct UConverterStaticData { /* +offset: size */
	68	uint32_t structSize; /* +0: 4 Size of this structure */
	69
	70	char name
	71	[UCNV_MAX_CONVERTER_NAME_LENGTH]; /* +4: 60 internal name of the converter- invariant chars */
	72
	73	int32_t codepage; /* +64: 4 codepage # (now IBM-$codepage) */
	74
	75	int8_t platform; /* +68: 1 platform of the converter (only IBM now) */
	76	int8_t conversionType; /* +69: 1 conversion type */
	77
	78	int8_t minBytesPerChar; /* +70: 1 Minimum # bytes per char in this codepage */
374ca955	79	int8_t maxBytesPerChar; /* +71: 1 Maximum # bytes output per UChar in this codepage */
b75a7d8f A	80
	81	uint8_t subChar[UCNV_MAX_SUBCHAR_LEN]; /* +72: 4 [note: 4 and 8 byte boundary] */
	82	int8_t subCharLen; /* +76: 1 */
	83
	84	uint8_t hasToUnicodeFallback; /* +77: 1 UBool needs to be changed to UBool to be consistent across platform */
	85	uint8_t hasFromUnicodeFallback; /* +78: 1 */
	86	uint8_t unicodeMask; /* +79: 1 bit 0: has supplementary bit 1: has single surrogates */
	87	uint8_t subChar1; /* +80: 1 single-byte substitution character for IBM MBCS (0 if none) */
	88	uint8_t reserved[19]; /* +81: 19 to round out the structure */
	89	/* total size: 100 */
	90	} UConverterStaticData;
	91
	92	/*
	93	* Defines the UConverterSharedData struct,
	94	* the immutable, shared part of UConverter.
	95	*/
	96	struct UConverterSharedData {
	97	uint32_t structSize; /* Size of this structure */
2ca993e8	98	uint32_t referenceCounter; /* used to count number of clients, unused for static/immutable SharedData */
b75a7d8f A	99
b75a7d8f A	100	const void dataMemory; / from udata_openChoice() - for cleanup */
b75a7d8f A	101
	102	const UConverterStaticData staticData; / pointer to the static (non changing) data. */
	103
	104	UBool sharedDataCached; /* TRUE: shared data is in cache, don't destroy on ucnv_close() if 0 ref. FALSE: shared data isn't in the cache, do attempt to clean it up if the ref is 0 */
2ca993e8 A	105	/** If FALSE, then referenceCounter is not used. Must not change after initialization. */
2ca993e8 A	106	UBool isReferenceCounted;
b75a7d8f A	107
	108	const UConverterImpl impl; / vtable-style struct of mostly function pointers */
	109
	110	/initial values of some members of the mutable part of object /
	111	uint32_t toUnicodeStatus;
b75a7d8f	112
374ca955 A	113	/*
	114	* Shared data structures currently come in two flavors:
	115	* - readonly for built-in algorithmic converters
	116	* - allocated for MBCS, with a pointer to an allocated UConverterTable
	117	* which always has a UConverterMBCSTable
	118	*
	119	* To eliminate one allocation, I am making the UConverterMBCSTable
2ca993e8	120	* a member of the shared data.
374ca955 A	121	*
	122	* markus 2003-nov-07
	123	*/
	124	UConverterMBCSTable mbcs;
	125	};
b75a7d8f	126
2ca993e8 A	127	/** UConverterSharedData initializer for static, non-reference-counted converters. */
	128	#define UCNV_IMMUTABLE_SHARED_DATA_INITIALIZER(pStaticData, pImpl) \
	129	{ \
	130	sizeof(UConverterSharedData), ~((uint32_t)0), \
	131	NULL, pStaticData, FALSE, FALSE, pImpl, \
	132	0, UCNV_MBCS_TABLE_INITIALIZER \
	133	}
	134
b75a7d8f A	135	/* Defines a UConverter, the lightweight mutable part the user sees */
	136
	137	struct UConverter {
	138	/*
	139	* Error function pointer called when conversion issues
	140	* occur during a ucnv_fromUnicode call
	141	*/
	142	void (U_EXPORT2 fromUCharErrorBehaviour) (const void context,
	143	UConverterFromUnicodeArgs *args,
	144	const UChar *codeUnits,
	145	int32_t length,
	146	UChar32 codePoint,
	147	UConverterCallbackReason reason,
	148	UErrorCode *);
	149	/*
	150	* Error function pointer called when conversion issues
374ca955	151	* occur during a ucnv_toUnicode call
b75a7d8f A	152	*/
	153	void (U_EXPORT2 fromCharErrorBehaviour) (const void context,
	154	UConverterToUnicodeArgs *args,
	155	const char *codeUnits,
	156	int32_t length,
	157	UConverterCallbackReason reason,
	158	UErrorCode *);
	159
	160	/*
	161	* Pointer to additional data that depends on the converter type.
	162	* Used by ISO 2022, SCSU, GB 18030 converters, possibly more.
	163	*/
	164	void *extraInfo;
	165
	166	const void *fromUContext;
	167	const void *toUContext;
	168
73c04bcf A	169	/*
	170	* Pointer to charset bytes for substitution string if subCharLen>0,
	171	* or pointer to Unicode string (UChar *) if subCharLen<0.
	172	* subCharLen==0 is equivalent to using a skip callback.
	173	* If the pointer is !=subUChars then it is allocated with
	174	* UCNV_ERROR_BUFFER_LENGTH * U_SIZEOF_UCHAR bytes.
	175	* The subUChars field is declared as UChar[] not uint8_t[] to
	176	* guarantee alignment for UChars.
	177	*/
	178	uint8_t *subChars;
	179
b75a7d8f A	180	UConverterSharedData sharedData; / Pointer to the shared immutable part of the converter object */
	181
	182	uint32_t options; /* options flags from UConverterOpen, may contain additional bits */
	183
	184	UBool sharedDataIsCached; /* TRUE: shared data is in cache, don't destroy on ucnv_close() if 0 ref. FALSE: shared data isn't in the cache, do attempt to clean it up if the ref is 0 */
	185	UBool isCopyLocal; /* TRUE if UConverter is not owned and not released in ucnv_close() (stack-allocated, safeClone(), etc.) */
	186	UBool isExtraLocal; /* TRUE if extraInfo is not owned and not released in ucnv_close() (stack-allocated, safeClone(), etc.) */
	187
	188	UBool useFallback;
	189	int8_t toULength; /* number of bytes in toUBytes */
374ca955	190	uint8_t toUBytes[UCNV_MAX_CHAR_LEN-1];/* more "toU status"; keeps the bytes of the current character */
b75a7d8f A	191	uint32_t toUnicodeStatus; /* Used to internalize stream status information */
	192	int32_t mode;
	193	uint32_t fromUnicodeStatus;
374ca955 A	194
	195	/*
	196	* More fromUnicode() status. Serves 3 purposes:
	197	* - keeps a lead surrogate between buffers (similar to toUBytes[])
	198	* - keeps a lead surrogate at the end of the stream,
	199	* which the framework handles as truncated input
	200	* - if the fromUnicode() implementation returns to the framework
	201	* (ucnv.c ucnv_fromUnicode()), then the framework calls the callback
	202	* for this code point
	203	*/
	204	UChar32 fromUChar32;
	205
	206	/*
	207	* value for ucnv_getMaxCharSize()
	208	*
	209	* usually simply copied from the static data, but ucnvmbcs.c modifies
	210	* the value depending on the converter type and options
	211	*/
	212	int8_t maxBytesPerUChar;
b75a7d8f A	213
	214	int8_t subCharLen; /* length of the codepage specific character sequence */
	215	int8_t invalidCharLength;
	216	int8_t charErrorBufferLength; /* number of valid bytes in charErrorBuffer */
	217
	218	int8_t invalidUCharLength;
	219	int8_t UCharErrorBufferLength; /* number of valid UChars in charErrorBuffer */
	220
	221	uint8_t subChar1; /* single-byte substitution character if different from subChar */
374ca955	222	UBool useSubChar1;
374ca955	223	char invalidCharBuffer[UCNV_MAX_CHAR_LEN]; /* bytes from last error/callback situation */
b75a7d8f	224	uint8_t charErrorBuffer[UCNV_ERROR_BUFFER_LENGTH]; /* codepage output from Error functions */
73c04bcf	225	UChar subUChars[UCNV_MAX_SUBCHAR_LEN/U_SIZEOF_UCHAR]; /* see subChars documentation */
b75a7d8f	226
374ca955	227	UChar invalidUCharBuffer[U16_MAX_LENGTH]; /* UChars from last error/callback situation */
b75a7d8f A	228	UChar UCharErrorBuffer[UCNV_ERROR_BUFFER_LENGTH]; /* unicode output from Error functions */
b75a7d8f A	229
374ca955 A	230	/* fields for conversion extension */
	231
	232	/* store previous UChars/chars to continue partial matches */
	233	UChar32 preFromUFirstCP; /* >=0: partial match */
	234	UChar preFromU[UCNV_EXT_MAX_UCHARS];
	235	char preToU[UCNV_EXT_MAX_BYTES];
	236	int8_t preFromULength, preToULength; /* negative: replay */
	237	int8_t preToUFirstLength; /* length of first character */
46f4442e A	238
	239	/* new fields for ICU 4.0 */
	240	UConverterCallbackReason toUCallbackReason; /* (fromCharErrorBehaviour) reason, set when error is detected /
b75a7d8f A	241	};
	242
	243	U_CDECL_END /* end of UConverter */
	244
374ca955 A	245	#define CONVERTER_FILE_EXTENSION ".cnv"
374ca955 A	246
73c04bcf A	247
	248	/**
	249	* Return the number of all converter names.
	250	* @param pErrorCode The error code
	251	* @return the number of all converter names
	252	*/
	253	U_CFUNC uint16_t
	254	ucnv_bld_countAvailableConverters(UErrorCode *pErrorCode);
	255
	256	/**
	257	* Return the (n)th converter name in mixed case, or NULL
	258	* if there is none (typically, if the data cannot be loaded).
	259	* 0<=index<ucnv_io_countAvailableConverters().
	260	* @param n The number specifies which converter name to get
	261	* @param pErrorCode The error code
	262	* @return the (n)th converter name in mixed case, or NULL if there is none.
	263	*/
	264	U_CFUNC const char *
	265	ucnv_bld_getAvailableConverter(uint16_t n, UErrorCode *pErrorCode);
	266
374ca955 A	267	/**
	268	* Load a non-algorithmic converter.
	269	* If pkg==NULL, then this function must be called inside umtx_lock(&cnvCacheMutex).
	270	*/
4388f060	271	U_CAPI UConverterSharedData *
374ca955 A	272	ucnv_load(UConverterLoadArgs pArgs, UErrorCode err);
	273
	274	/**
	275	* Unload a non-algorithmic converter.
2ca993e8	276	* It must be sharedData->isReferenceCounted
374ca955 A	277	* and this function must be called inside umtx_lock(&cnvCacheMutex).
374ca955 A	278	*/
4388f060	279	U_CAPI void
374ca955	280	ucnv_unload(UConverterSharedData *sharedData);
b75a7d8f	281
374ca955 A	282	/**
	283	* Swap ICU .cnv conversion tables. See udataswp.h.
	284	* @internal
	285	*/
	286	U_CAPI int32_t U_EXPORT2
	287	ucnv_swap(const UDataSwapper *ds,
	288	const void inData, int32_t length, void outData,
	289	UErrorCode *pErrorCode);
b75a7d8f	290
374ca955	291	#endif
b75a7d8f A	292
b75a7d8f A	293	#endif /* _UCNV_BLD */