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      1 // Copyright (C) 2016 and later: Unicode, Inc. and others.
      2 // License & terms of use: http://www.unicode.org/copyright.html
      3 /*
      4 ******************************************************************************
      5 * Copyright (C) 1999-2016, International Business Machines
      6 *                Corporation and others. All Rights Reserved.
      7 ******************************************************************************
      8 *   file name:  uresdata.h
      9 *   encoding:   US-ASCII
     10 *   tab size:   8 (not used)
     11 *   indentation:4
     12 *
     13 *   created on: 1999dec08
     14 *   created by: Markus W. Scherer
     15 *   06/24/02    weiv        Added support for resource sharing
     16 */
     17 
     18 #ifndef __RESDATA_H__
     19 #define __RESDATA_H__
     20 
     21 #include "unicode/utypes.h"
     22 #include "unicode/udata.h"
     23 #include "unicode/ures.h"
     24 #include "putilimp.h"
     25 #include "udataswp.h"
     26 
     27 /**
     28  * Numeric constants for internal-only types of resource items.
     29  * These must use different numeric values than UResType constants
     30  * because they are used together.
     31  * Internal types are never returned by ures_getType().
     32  */
     33 typedef enum {
     34     /** Include a negative value so that the compiler uses the same int type as for UResType. */
     35     URES_INTERNAL_NONE=-1,
     36 
     37     /** Resource type constant for tables with 32-bit count, key offsets and values. */
     38     URES_TABLE32=4,
     39 
     40     /**
     41      * Resource type constant for tables with 16-bit count, key offsets and values.
     42      * All values are URES_STRING_V2 strings.
     43      */
     44     URES_TABLE16=5,
     45 
     46     /** Resource type constant for 16-bit Unicode strings in formatVersion 2. */
     47     URES_STRING_V2=6,
     48 
     49     /**
     50      * Resource type constant for arrays with 16-bit count and values.
     51      * All values are URES_STRING_V2 strings.
     52      */
     53     URES_ARRAY16=9
     54 
     55     /* Resource type 15 is not defined but effectively used by RES_BOGUS=0xffffffff. */
     56 } UResInternalType;
     57 
     58 /*
     59  * A Resource is a 32-bit value that has 2 bit fields:
     60  * 31..28   4-bit type, see enum below
     61  * 27..0    28-bit four-byte-offset or value according to the type
     62  */
     63 typedef uint32_t Resource;
     64 
     65 #define RES_BOGUS 0xffffffff
     66 #define RES_MAX_OFFSET 0x0fffffff
     67 
     68 #define RES_GET_TYPE(res) ((int32_t)((res)>>28UL))
     69 #define RES_GET_OFFSET(res) ((res)&0x0fffffff)
     70 #define RES_GET_POINTER(pRoot, res) ((pRoot)+RES_GET_OFFSET(res))
     71 
     72 /* get signed and unsigned integer values directly from the Resource handle */
     73 #if U_SIGNED_RIGHT_SHIFT_IS_ARITHMETIC
     74 #   define RES_GET_INT(res) (((int32_t)((res)<<4L))>>4L)
     75 #else
     76 #   define RES_GET_INT(res) (int32_t)(((res)&0x08000000) ? (res)|0xf0000000 : (res)&0x07ffffff)
     77 #endif
     78 
     79 #define RES_GET_UINT(res) ((res)&0x0fffffff)
     80 
     81 #define URES_IS_ARRAY(type) ((int32_t)(type)==URES_ARRAY || (int32_t)(type)==URES_ARRAY16)
     82 #define URES_IS_TABLE(type) ((int32_t)(type)==URES_TABLE || (int32_t)(type)==URES_TABLE16 || (int32_t)(type)==URES_TABLE32)
     83 #define URES_IS_CONTAINER(type) (URES_IS_TABLE(type) || URES_IS_ARRAY(type))
     84 
     85 #define URES_MAKE_RESOURCE(type, offset) (((Resource)(type)<<28)|(Resource)(offset))
     86 #define URES_MAKE_EMPTY_RESOURCE(type) ((Resource)(type)<<28)
     87 
     88 /* indexes[] value names; indexes are generally 32-bit (Resource) indexes */
     89 enum {
     90     /**
     91      * [0] contains the length of indexes[]
     92      * which is at most URES_INDEX_TOP of the latest format version
     93      *
     94      * formatVersion==1: all bits contain the length of indexes[]
     95      *   but the length is much less than 0xff;
     96      * formatVersion>1:
     97      *   only bits  7..0 contain the length of indexes[],
     98      *        bits 31..8 are reserved and set to 0
     99      * formatVersion>=3:
    100      *        bits 31..8 poolStringIndexLimit bits 23..0
    101      */
    102     URES_INDEX_LENGTH,
    103     /**
    104      * [1] contains the top of the key strings,
    105      *     same as the bottom of resources or UTF-16 strings, rounded up
    106      */
    107     URES_INDEX_KEYS_TOP,
    108     /** [2] contains the top of all resources */
    109     URES_INDEX_RESOURCES_TOP,
    110     /**
    111      * [3] contains the top of the bundle,
    112      *     in case it were ever different from [2]
    113      */
    114     URES_INDEX_BUNDLE_TOP,
    115     /** [4] max. length of any table */
    116     URES_INDEX_MAX_TABLE_LENGTH,
    117     /**
    118      * [5] attributes bit set, see URES_ATT_* (new in formatVersion 1.2)
    119      *
    120      * formatVersion>=3:
    121      *   bits 31..16 poolStringIndex16Limit
    122      *   bits 15..12 poolStringIndexLimit bits 27..24
    123      */
    124     URES_INDEX_ATTRIBUTES,
    125     /**
    126      * [6] top of the 16-bit units (UTF-16 string v2 UChars, URES_TABLE16, URES_ARRAY16),
    127      *     rounded up (new in formatVersion 2.0, ICU 4.4)
    128      */
    129     URES_INDEX_16BIT_TOP,
    130     /** [7] checksum of the pool bundle (new in formatVersion 2.0, ICU 4.4) */
    131     URES_INDEX_POOL_CHECKSUM,
    132     URES_INDEX_TOP
    133 };
    134 
    135 /*
    136  * Nofallback attribute, attribute bit 0 in indexes[URES_INDEX_ATTRIBUTES].
    137  * New in formatVersion 1.2 (ICU 3.6).
    138  *
    139  * If set, then this resource bundle is a standalone bundle.
    140  * If not set, then the bundle participates in locale fallback, eventually
    141  * all the way to the root bundle.
    142  * If indexes[] is missing or too short, then the attribute cannot be determined
    143  * reliably. Dependency checking should ignore such bundles, and loading should
    144  * use fallbacks.
    145  */
    146 #define URES_ATT_NO_FALLBACK 1
    147 
    148 /*
    149  * Attributes for bundles that are, or use, a pool bundle.
    150  * A pool bundle provides key strings that are shared among several other bundles
    151  * to reduce their total size.
    152  * New in formatVersion 2 (ICU 4.4).
    153  */
    154 #define URES_ATT_IS_POOL_BUNDLE 2
    155 #define URES_ATT_USES_POOL_BUNDLE 4
    156 
    157 /*
    158  * File format for .res resource bundle files
    159  *
    160  * ICU 56: New in formatVersion 3 compared with 2: -------------
    161  *
    162  * Resource bundles can optionally use shared string-v2 values
    163  * stored in the pool bundle.
    164  * If so, then the indexes[] contain two new values
    165  * in previously-unused bits of existing indexes[] slots:
    166  * - poolStringIndexLimit:
    167  *     String-v2 offsets (in 32-bit Resource words) below this limit
    168  *     point to pool bundle string-v2 values.
    169  * - poolStringIndex16Limit:
    170  *     Resource16 string-v2 offsets below this limit
    171  *     point to pool bundle string-v2 values.
    172  * Guarantee: poolStringIndex16Limit <= poolStringIndexLimit
    173  *
    174  * The local bundle's poolStringIndexLimit is greater than
    175  * any pool bundle string index used in the local bundle.
    176  * The poolStringIndexLimit should not be greater than
    177  * the maximum possible pool bundle string index.
    178  *
    179  * The maximum possible pool bundle string index is the index to the last non-NUL
    180  * pool string character, due to suffix sharing.
    181  *
    182  * In the pool bundle, there is no structure that lists the strings.
    183  * (The root resource is an empty Table.)
    184  * If the strings need to be enumerated (as genrb --usePoolBundle does),
    185  * then iterate through the pool bundle's 16-bit-units array from the beginning.
    186  * Stop at the end of the array, or when an explicit or implicit string length
    187  * would lead beyond the end of the array,
    188  * or when an apparent string is not NUL-terminated.
    189  * (Future genrb version might terminate the strings with
    190  * what looks like a large explicit string length.)
    191  *
    192  * ICU 4.4: New in formatVersion 2 compared with 1.3: -------------
    193  *
    194  * Three new resource types -- String-v2, Table16 and Array16 -- have their
    195  * values stored in a new array of 16-bit units between the table key strings
    196  * and the start of the other resources.
    197  *
    198  * genrb eliminates duplicates among Unicode string-v2 values.
    199  * Multiple Unicode strings may use the same offset and string data,
    200  * or a short string may point to the suffix of a longer string. ("Suffix sharing")
    201  * For example, one string "abc" may be reused for another string "bc" by pointing
    202  * to the second character. (Short strings-v2 are NUL-terminated
    203  * and not preceded by an explicit length value.)
    204  *
    205  * It is allowed for all resource types to share values.
    206  * The swapper code (ures_swap()) has been modified so that it swaps each item
    207  * exactly once.
    208  *
    209  * A resource bundle may use a special pool bundle. Some or all of the table key strings
    210  * of the using-bundle are omitted, and the key string offsets for such key strings refer
    211  * to offsets in the pool bundle.
    212  * The using-bundle's and the pool-bundle's indexes[URES_INDEX_POOL_CHECKSUM] values
    213  * must match.
    214  * Two bits in indexes[URES_INDEX_ATTRIBUTES] indicate whether a resource bundle
    215  * is or uses a pool bundle.
    216  *
    217  * Table key strings must be compared in ASCII order, even if they are not
    218  * stored in ASCII.
    219  *
    220  * New in formatVersion 1.3 compared with 1.2: -------------
    221  *
    222  * genrb eliminates duplicates among key strings.
    223  * Multiple table items may share one key string, or one item may point
    224  * to the suffix of another's key string. ("Suffix sharing")
    225  * For example, one key "abc" may be reused for another key "bc" by pointing
    226  * to the second character. (Key strings are NUL-terminated.)
    227  *
    228  * -------------
    229  *
    230  * An ICU4C resource bundle file (.res) is a binary, memory-mappable file
    231  * with nested, hierarchical data structures.
    232  * It physically contains the following:
    233  *
    234  *   Resource root; -- 32-bit Resource item, root item for this bundle's tree;
    235  *                     currently, the root item must be a table or table32 resource item
    236  *   int32_t indexes[indexes[0]]; -- array of indexes for friendly
    237  *                                   reading and swapping; see URES_INDEX_* above
    238  *                                   new in formatVersion 1.1 (ICU 2.8)
    239  *   char keys[]; -- characters for key strings
    240  *                   (formatVersion 1.0: up to 65k of characters; 1.1: <2G)
    241  *                   (minus the space for root and indexes[]),
    242  *                   which consist of invariant characters (ASCII/EBCDIC) and are NUL-terminated;
    243  *                   padded to multiple of 4 bytes for 4-alignment of the following data
    244  *   uint16_t 16BitUnits[]; -- resources that are stored entirely as sequences of 16-bit units
    245  *                             (new in formatVersion 2/ICU 4.4)
    246  *                             data is indexed by the offset values in 16-bit resource types,
    247  *                             with offset 0 pointing to the beginning of this array;
    248  *                             there is a 0 at offset 0, for empty resources;
    249  *                             padded to multiple of 4 bytes for 4-alignment of the following data
    250  *   data; -- data directly and indirectly indexed by the root item;
    251  *            the structure is determined by walking the tree
    252  *
    253  * Each resource bundle item has a 32-bit Resource handle (see typedef above)
    254  * which contains the item type number in its upper 4 bits (31..28) and either
    255  * an offset or a direct value in its lower 28 bits (27..0).
    256  * The order of items is undefined and only determined by walking the tree.
    257  * Leaves of the tree may be stored first or last or anywhere in between,
    258  * and it is in theory possible to have unreferenced holes in the file.
    259  *
    260  * 16-bit-unit values:
    261  * Starting with formatVersion 2/ICU 4.4, some resources are stored in a special
    262  * array of 16-bit units. Each resource value is a sequence of 16-bit units,
    263  * with no per-resource padding to a 4-byte boundary.
    264  * 16-bit container types (Table16 and Array16) contain Resource16 values
    265  * which are offsets to String-v2 resources in the same 16-bit-units array.
    266  *
    267  * Direct values:
    268  * - Empty Unicode strings have an offset value of 0 in the Resource handle itself.
    269  * - Starting with formatVersion 2/ICU 4.4, an offset value of 0 for
    270  *   _any_ resource type indicates an empty value.
    271  * - Integer values are 28-bit values stored in the Resource handle itself;
    272  *   the interpretation of unsigned vs. signed integers is up to the application.
    273  *
    274  * All other types and values use 28-bit offsets to point to the item's data.
    275  * The offset is an index to the first 32-bit word of the value, relative to the
    276  * start of the resource data (i.e., the root item handle is at offset 0).
    277  * To get byte offsets, the offset is multiplied by 4 (or shifted left by 2 bits).
    278  * All resource item values are 4-aligned.
    279  *
    280  * New in formatVersion 2/ICU 4.4: Some types use offsets into the 16-bit-units array,
    281  * indexing 16-bit units in that array.
    282  *
    283  * The structures (memory layouts) for the values for each item type are listed
    284  * in the table below.
    285  *
    286  * Nested, hierarchical structures: -------------
    287  *
    288  * Table items contain key-value pairs where the keys are offsets to char * key strings.
    289  * The values of these pairs are either Resource handles or
    290  * offsets into the 16-bit-units array, depending on the table type.
    291  *
    292  * Array items are simple vectors of Resource handles,
    293  * or of offsets into the 16-bit-units array, depending on the array type.
    294  *
    295  * Table key string offsets: -------
    296  *
    297  * Key string offsets are relative to the start of the resource data (of the root handle),
    298  * i.e., the first string has an offset of 4+sizeof(indexes).
    299  * (After the 4-byte root handle and after the indexes array.)
    300  *
    301  * If the resource bundle uses a pool bundle, then some key strings are stored
    302  * in the pool bundle rather than in the local bundle itself.
    303  * - In a Table or Table16, the 16-bit key string offset is local if it is
    304  *   less than indexes[URES_INDEX_KEYS_TOP]<<2.
    305  *   Otherwise, subtract indexes[URES_INDEX_KEYS_TOP]<<2 to get the offset into
    306  *   the pool bundle key strings.
    307  * - In a Table32, the 32-bit key string offset is local if it is non-negative.
    308  *   Otherwise, reset bit 31 to get the pool key string offset.
    309  *
    310  * Unlike the local offset, the pool key offset is relative to
    311  * the start of the key strings, not to the start of the bundle.
    312  *
    313  * An alias item is special (and new in ICU 2.4): --------------
    314  *
    315  * Its memory layout is just like for a UnicodeString, but at runtime it resolves to
    316  * another resource bundle's item according to the path in the string.
    317  * This is used to share items across bundles that are in different lookup/fallback
    318  * chains (e.g., large collation data among zh_TW and zh_HK).
    319  * This saves space (for large items) and maintenance effort (less duplication of data).
    320  *
    321  * --------------------------------------------------------------------------
    322  *
    323  * Resource types:
    324  *
    325  * Most resources have their values stored at four-byte offsets from the start
    326  * of the resource data. These values are at least 4-aligned.
    327  * Some resource values are stored directly in the offset field of the Resource itself.
    328  * See UResType in unicode/ures.h for enumeration constants for Resource types.
    329  *
    330  * Some resources have their values stored as sequences of 16-bit units,
    331  * at 2-byte offsets from the start of a contiguous 16-bit-unit array between
    332  * the table key strings and the other resources. (new in formatVersion 2/ICU 4.4)
    333  * At offset 0 of that array is a 16-bit zero value for empty 16-bit resources.
    334  *
    335  * Resource16 values in Table16 and Array16 are 16-bit offsets to String-v2
    336  * resources, with the offsets relative to the start of the 16-bit-units array.
    337  * Starting with formatVersion 3/ICU 56, if offset<poolStringIndex16Limit
    338  * then use the pool bundle's 16-bit-units array,
    339  * otherwise subtract that limit and use the local 16-bit-units array.
    340  *
    341  * Type Name            Memory layout of values
    342  *                      (in parentheses: scalar, non-offset values)
    343  *
    344  * 0  Unicode String:   int32_t length, UChar[length], (UChar)0, (padding)
    345  *                  or  (empty string ("") if offset==0)
    346  * 1  Binary:           int32_t length, uint8_t[length], (padding)
    347  *                      - the start of the bytes is 16-aligned -
    348  * 2  Table:            uint16_t count, uint16_t keyStringOffsets[count], (uint16_t padding), Resource[count]
    349  * 3  Alias:            (physically same value layout as string, new in ICU 2.4)
    350  * 4  Table32:          int32_t count, int32_t keyStringOffsets[count], Resource[count]
    351  *                      (new in formatVersion 1.1/ICU 2.8)
    352  * 5  Table16:          uint16_t count, uint16_t keyStringOffsets[count], Resource16[count]
    353  *                      (stored in the 16-bit-units array; new in formatVersion 2/ICU 4.4)
    354  * 6  Unicode String-v2:UChar[length], (UChar)0; length determined by the first UChar:
    355  *                      - if first is not a trail surrogate, then the length is implicit
    356  *                        and u_strlen() needs to be called
    357  *                      - if first<0xdfef then length=first&0x3ff (and skip first)
    358  *                      - if first<0xdfff then length=((first-0xdfef)<<16) | second UChar
    359  *                      - if first==0xdfff then length=((second UChar)<<16) | third UChar
    360  *                      (stored in the 16-bit-units array; new in formatVersion 2/ICU 4.4)
    361  *
    362  *                      Starting with formatVersion 3/ICU 56, if offset<poolStringIndexLimit
    363  *                      then use the pool bundle's 16-bit-units array,
    364  *                      otherwise subtract that limit and use the local 16-bit-units array.
    365  *                      (Note different limits for Resource16 vs. Resource.)
    366  *
    367  * 7  Integer:          (28-bit offset is integer value)
    368  * 8  Array:            int32_t count, Resource[count]
    369  * 9  Array16:          uint16_t count, Resource16[count]
    370  *                      (stored in the 16-bit-units array; new in formatVersion 2/ICU 4.4)
    371  * 14 Integer Vector:   int32_t length, int32_t[length]
    372  * 15 Reserved:         This value denotes special purpose resources and is for internal use.
    373  *
    374  * Note that there are 3 types with data vector values:
    375  * - Vectors of 8-bit bytes stored as type Binary.
    376  * - Vectors of 16-bit words stored as type Unicode String or Unicode String-v2
    377  *                     (no value restrictions, all values 0..ffff allowed!).
    378  * - Vectors of 32-bit words stored as type Integer Vector.
    379  */
    380 
    381 /*
    382  * Structure for a single, memory-mapped ResourceBundle.
    383  */
    384 typedef struct ResourceData {
    385     UDataMemory *data;
    386     const int32_t *pRoot;
    387     const uint16_t *p16BitUnits;
    388     const char *poolBundleKeys;
    389     Resource rootRes;
    390     int32_t localKeyLimit;
    391     const uint16_t *poolBundleStrings;
    392     int32_t poolStringIndexLimit;
    393     int32_t poolStringIndex16Limit;
    394     UBool noFallback; /* see URES_ATT_NO_FALLBACK */
    395     UBool isPoolBundle;
    396     UBool usesPoolBundle;
    397     UBool useNativeStrcmp;
    398 } ResourceData;
    399 
    400 /*
    401  * Read a resource bundle from memory.
    402  */
    403 U_INTERNAL void U_EXPORT2
    404 res_read(ResourceData *pResData,
    405          const UDataInfo *pInfo, const void *inBytes, int32_t length,
    406          UErrorCode *errorCode);
    407 
    408 /*
    409  * Load a resource bundle file.
    410  * The ResourceData structure must be allocated externally.
    411  */
    412 U_CFUNC void
    413 res_load(ResourceData *pResData,
    414          const char *path, const char *name, UErrorCode *errorCode);
    415 
    416 /*
    417  * Release a resource bundle file.
    418  * This does not release the ResourceData structure itself.
    419  */
    420 U_CFUNC void
    421 res_unload(ResourceData *pResData);
    422 
    423 U_INTERNAL UResType U_EXPORT2
    424 res_getPublicType(Resource res);
    425 
    426 /*
    427  * Return a pointer to a zero-terminated, const UChar* string
    428  * and set its length in *pLength.
    429  * Returns NULL if not found.
    430  */
    431 U_INTERNAL const UChar * U_EXPORT2
    432 res_getString(const ResourceData *pResData, Resource res, int32_t *pLength);
    433 
    434 U_INTERNAL const UChar * U_EXPORT2
    435 res_getAlias(const ResourceData *pResData, Resource res, int32_t *pLength);
    436 
    437 U_INTERNAL const uint8_t * U_EXPORT2
    438 res_getBinary(const ResourceData *pResData, Resource res, int32_t *pLength);
    439 
    440 U_INTERNAL const int32_t * U_EXPORT2
    441 res_getIntVector(const ResourceData *pResData, Resource res, int32_t *pLength);
    442 
    443 U_INTERNAL Resource U_EXPORT2
    444 res_getResource(const ResourceData *pResData, const char *key);
    445 
    446 U_INTERNAL int32_t U_EXPORT2
    447 res_countArrayItems(const ResourceData *pResData, Resource res);
    448 
    449 U_INTERNAL Resource U_EXPORT2
    450 res_getArrayItem(const ResourceData *pResData, Resource array, int32_t indexS);
    451 
    452 U_INTERNAL Resource U_EXPORT2
    453 res_getTableItemByIndex(const ResourceData *pResData, Resource table, int32_t indexS, const char ** key);
    454 
    455 U_INTERNAL Resource U_EXPORT2
    456 res_getTableItemByKey(const ResourceData *pResData, Resource table, int32_t *indexS, const char* * key);
    457 
    458 /**
    459  * Iterates over the path and stops when a scalar resource is found.
    460  * Follows aliases.
    461  * Modifies the contents of *path (replacing separators with NULs),
    462  * and also moves *path forward while it finds items.
    463  *
    464  * @param path input: "CollationElements/Sequence" or "zoneStrings/3/2" etc.;
    465  *             output: points to the part that has not yet been processed
    466  */
    467 U_CFUNC Resource res_findResource(const ResourceData *pResData, Resource r,
    468                                   char** path, const char** key);
    469 
    470 #ifdef __cplusplus
    471 
    472 #include "resource.h"
    473 
    474 U_NAMESPACE_BEGIN
    475 
    476 class ResourceDataValue : public ResourceValue {
    477 public:
    478     ResourceDataValue() : pResData(NULL), res(URES_NONE) {}
    479     virtual ~ResourceDataValue();
    480 
    481     void setData(const ResourceData *data) { pResData = data; }
    482     void setResource(Resource r) { res = r; }
    483 
    484     virtual UResType getType() const;
    485     virtual const UChar *getString(int32_t &length, UErrorCode &errorCode) const;
    486     virtual const UChar *getAliasString(int32_t &length, UErrorCode &errorCode) const;
    487     virtual int32_t getInt(UErrorCode &errorCode) const;
    488     virtual uint32_t getUInt(UErrorCode &errorCode) const;
    489     virtual const int32_t *getIntVector(int32_t &length, UErrorCode &errorCode) const;
    490     virtual const uint8_t *getBinary(int32_t &length, UErrorCode &errorCode) const;
    491     virtual ResourceArray getArray(UErrorCode &errorCode) const;
    492     virtual ResourceTable getTable(UErrorCode &errorCode) const;
    493     virtual UBool isNoInheritanceMarker() const;
    494     virtual int32_t getStringArray(UnicodeString *dest, int32_t capacity,
    495                                    UErrorCode &errorCode) const;
    496     virtual int32_t getStringArrayOrStringAsArray(UnicodeString *dest, int32_t capacity,
    497                                                   UErrorCode &errorCode) const;
    498     virtual UnicodeString getStringOrFirstOfArray(UErrorCode &errorCode) const;
    499 
    500     const ResourceData *pResData;
    501 
    502 private:
    503     Resource res;
    504 };
    505 
    506 U_NAMESPACE_END
    507 
    508 #endif  /* __cplusplus */
    509 
    510 /**
    511  * Swap an ICU resource bundle. See udataswp.h.
    512  * @internal
    513  */
    514 U_CAPI int32_t U_EXPORT2
    515 ures_swap(const UDataSwapper *ds,
    516           const void *inData, int32_t length, void *outData,
    517           UErrorCode *pErrorCode);
    518 
    519 #endif
    520