| /* |
| ****************************************************************************** |
| * * |
| * Copyright (C) 1999-2012, International Business Machines * |
| * Corporation and others. All Rights Reserved. * |
| * * |
| ****************************************************************************** |
| * file name: uresdata.h |
| * encoding: US-ASCII |
| * tab size: 8 (not used) |
| * indentation:4 |
| * |
| * created on: 1999dec08 |
| * created by: Markus W. Scherer |
| * 06/24/02 weiv Added support for resource sharing |
| */ |
| |
| #ifndef __RESDATA_H__ |
| #define __RESDATA_H__ |
| |
| #include "unicode/utypes.h" |
| #include "unicode/udata.h" |
| #include "unicode/ures.h" |
| #include "putilimp.h" |
| #include "udataswp.h" |
| |
| /** |
| * Numeric constants for internal-only types of resource items. |
| * These must use different numeric values than UResType constants |
| * because they are used together. |
| * Internal types are never returned by ures_getType(). |
| */ |
| typedef enum { |
| /** Include a negative value so that the compiler uses the same int type as for UResType. */ |
| URES_INTERNAL_NONE=-1, |
| |
| /** Resource type constant for tables with 32-bit count, key offsets and values. */ |
| URES_TABLE32=4, |
| |
| /** |
| * Resource type constant for tables with 16-bit count, key offsets and values. |
| * All values are URES_STRING_V2 strings. |
| */ |
| URES_TABLE16=5, |
| |
| /** Resource type constant for 16-bit Unicode strings in formatVersion 2. */ |
| URES_STRING_V2=6, |
| |
| /** |
| * Resource type constant for arrays with 16-bit count and values. |
| * All values are URES_STRING_V2 strings. |
| */ |
| URES_ARRAY16=9 |
| } UResInternalType; |
| |
| /* |
| * A Resource is a 32-bit value that has 2 bit fields: |
| * 31..28 4-bit type, see enum below |
| * 27..0 28-bit four-byte-offset or value according to the type |
| */ |
| typedef uint32_t Resource; |
| |
| #define RES_BOGUS 0xffffffff |
| |
| #define RES_GET_TYPE(res) ((int32_t)((res)>>28UL)) |
| #define RES_GET_OFFSET(res) ((res)&0x0fffffff) |
| #define RES_GET_POINTER(pRoot, res) ((pRoot)+RES_GET_OFFSET(res)) |
| |
| /* get signed and unsigned integer values directly from the Resource handle */ |
| #if U_SIGNED_RIGHT_SHIFT_IS_ARITHMETIC |
| # define RES_GET_INT(res) (((int32_t)((res)<<4L))>>4L) |
| #else |
| # define RES_GET_INT(res) (int32_t)(((res)&0x08000000) ? (res)|0xf0000000 : (res)&0x07ffffff) |
| #endif |
| |
| #define RES_GET_UINT(res) ((res)&0x0fffffff) |
| |
| #define URES_IS_ARRAY(type) ((int32_t)(type)==URES_ARRAY || (int32_t)(type)==URES_ARRAY16) |
| #define URES_IS_TABLE(type) ((int32_t)(type)==URES_TABLE || (int32_t)(type)==URES_TABLE16 || (int32_t)(type)==URES_TABLE32) |
| #define URES_IS_CONTAINER(type) (URES_IS_TABLE(type) || URES_IS_ARRAY(type)) |
| |
| #define URES_MAKE_RESOURCE(type, offset) (((Resource)(type)<<28)|(Resource)(offset)) |
| #define URES_MAKE_EMPTY_RESOURCE(type) ((Resource)(type)<<28) |
| |
| /* indexes[] value names; indexes are generally 32-bit (Resource) indexes */ |
| enum { |
| URES_INDEX_LENGTH, /* [0] contains URES_INDEX_TOP==the length of indexes[]; |
| * formatVersion==1: all bits contain the length of indexes[] |
| * but the length is much less than 0xff; |
| * formatVersion>1: |
| * only bits 7..0 contain the length of indexes[], |
| * bits 31..8 are reserved and set to 0 */ |
| URES_INDEX_KEYS_TOP, /* [1] contains the top of the key strings, */ |
| /* same as the bottom of resources or UTF-16 strings, rounded up */ |
| URES_INDEX_RESOURCES_TOP, /* [2] contains the top of all resources */ |
| URES_INDEX_BUNDLE_TOP, /* [3] contains the top of the bundle, */ |
| /* in case it were ever different from [2] */ |
| URES_INDEX_MAX_TABLE_LENGTH,/* [4] max. length of any table */ |
| URES_INDEX_ATTRIBUTES, /* [5] attributes bit set, see URES_ATT_* (new in formatVersion 1.2) */ |
| URES_INDEX_16BIT_TOP, /* [6] top of the 16-bit units (UTF-16 string v2 UChars, URES_TABLE16, URES_ARRAY16), |
| * rounded up (new in formatVersion 2.0, ICU 4.4) */ |
| URES_INDEX_POOL_CHECKSUM, /* [7] checksum of the pool bundle (new in formatVersion 2.0, ICU 4.4) */ |
| URES_INDEX_TOP |
| }; |
| |
| /* |
| * Nofallback attribute, attribute bit 0 in indexes[URES_INDEX_ATTRIBUTES]. |
| * New in formatVersion 1.2 (ICU 3.6). |
| * |
| * If set, then this resource bundle is a standalone bundle. |
| * If not set, then the bundle participates in locale fallback, eventually |
| * all the way to the root bundle. |
| * If indexes[] is missing or too short, then the attribute cannot be determined |
| * reliably. Dependency checking should ignore such bundles, and loading should |
| * use fallbacks. |
| */ |
| #define URES_ATT_NO_FALLBACK 1 |
| |
| /* |
| * Attributes for bundles that are, or use, a pool bundle. |
| * A pool bundle provides key strings that are shared among several other bundles |
| * to reduce their total size. |
| * New in formatVersion 2 (ICU 4.4). |
| */ |
| #define URES_ATT_IS_POOL_BUNDLE 2 |
| #define URES_ATT_USES_POOL_BUNDLE 4 |
| |
| /* |
| * File format for .res resource bundle files (formatVersion=2, ICU 4.4) |
| * |
| * New in formatVersion 2 compared with 1.3: ------------- |
| * |
| * Three new resource types -- String-v2, Table16 and Array16 -- have their |
| * values stored in a new array of 16-bit units between the table key strings |
| * and the start of the other resources. |
| * |
| * genrb eliminates duplicates among Unicode string-v2 values. |
| * Multiple Unicode strings may use the same offset and string data, |
| * or a short string may point to the suffix of a longer string. ("Suffix sharing") |
| * For example, one string "abc" may be reused for another string "bc" by pointing |
| * to the second character. (Short strings-v2 are NUL-terminated |
| * and not preceded by an explicit length value.) |
| * |
| * It is allowed for all resource types to share values. |
| * The swapper code (ures_swap()) has been modified so that it swaps each item |
| * exactly once. |
| * |
| * A resource bundle may use a special pool bundle. Some or all of the table key strings |
| * of the using-bundle are omitted, and the key string offsets for such key strings refer |
| * to offsets in the pool bundle. |
| * The using-bundle's and the pool-bundle's indexes[URES_INDEX_POOL_CHECKSUM] values |
| * must match. |
| * Two bits in indexes[URES_INDEX_ATTRIBUTES] indicate whether a resource bundle |
| * is or uses a pool bundle. |
| * |
| * Table key strings must be compared in ASCII order, even if they are not |
| * stored in ASCII. |
| * |
| * New in formatVersion 1.3 compared with 1.2: ------------- |
| * |
| * genrb eliminates duplicates among key strings. |
| * Multiple table items may share one key string, or one item may point |
| * to the suffix of another's key string. ("Suffix sharing") |
| * For example, one key "abc" may be reused for another key "bc" by pointing |
| * to the second character. (Key strings are NUL-terminated.) |
| * |
| * ------------- |
| * |
| * An ICU4C resource bundle file (.res) is a binary, memory-mappable file |
| * with nested, hierarchical data structures. |
| * It physically contains the following: |
| * |
| * Resource root; -- 32-bit Resource item, root item for this bundle's tree; |
| * currently, the root item must be a table or table32 resource item |
| * int32_t indexes[indexes[0]]; -- array of indexes for friendly |
| * reading and swapping; see URES_INDEX_* above |
| * new in formatVersion 1.1 (ICU 2.8) |
| * char keys[]; -- characters for key strings |
| * (formatVersion 1.0: up to 65k of characters; 1.1: <2G) |
| * (minus the space for root and indexes[]), |
| * which consist of invariant characters (ASCII/EBCDIC) and are NUL-terminated; |
| * padded to multiple of 4 bytes for 4-alignment of the following data |
| * uint16_t 16BitUnits[]; -- resources that are stored entirely as sequences of 16-bit units |
| * (new in formatVersion 2/ICU 4.4) |
| * data is indexed by the offset values in 16-bit resource types, |
| * with offset 0 pointing to the beginning of this array; |
| * there is a 0 at offset 0, for empty resources; |
| * padded to multiple of 4 bytes for 4-alignment of the following data |
| * data; -- data directly and indirectly indexed by the root item; |
| * the structure is determined by walking the tree |
| * |
| * Each resource bundle item has a 32-bit Resource handle (see typedef above) |
| * which contains the item type number in its upper 4 bits (31..28) and either |
| * an offset or a direct value in its lower 28 bits (27..0). |
| * The order of items is undefined and only determined by walking the tree. |
| * Leaves of the tree may be stored first or last or anywhere in between, |
| * and it is in theory possible to have unreferenced holes in the file. |
| * |
| * 16-bit-unit values: |
| * Starting with formatVersion 2/ICU 4.4, some resources are stored in a special |
| * array of 16-bit units. Each resource value is a sequence of 16-bit units, |
| * with no per-resource padding to a 4-byte boundary. |
| * 16-bit container types (Table16 and Array16) contain Resource16 values |
| * which are offsets to String-v2 resources in the same 16-bit-units array. |
| * |
| * Direct values: |
| * - Empty Unicode strings have an offset value of 0 in the Resource handle itself. |
| * - Starting with formatVersion 2/ICU 4.4, an offset value of 0 for |
| * _any_ resource type indicates an empty value. |
| * - Integer values are 28-bit values stored in the Resource handle itself; |
| * the interpretation of unsigned vs. signed integers is up to the application. |
| * |
| * All other types and values use 28-bit offsets to point to the item's data. |
| * The offset is an index to the first 32-bit word of the value, relative to the |
| * start of the resource data (i.e., the root item handle is at offset 0). |
| * To get byte offsets, the offset is multiplied by 4 (or shifted left by 2 bits). |
| * All resource item values are 4-aligned. |
| * |
| * New in formatVersion 2/ICU 4.4: Some types use offsets into the 16-bit-units array, |
| * indexing 16-bit units in that array. |
| * |
| * The structures (memory layouts) for the values for each item type are listed |
| * in the table below. |
| * |
| * Nested, hierarchical structures: ------------- |
| * |
| * Table items contain key-value pairs where the keys are offsets to char * key strings. |
| * The values of these pairs are either Resource handles or |
| * offsets into the 16-bit-units array, depending on the table type. |
| * |
| * Array items are simple vectors of Resource handles, |
| * or of offsets into the 16-bit-units array, depending on the array type. |
| * |
| * Table key string offsets: ------- |
| * |
| * Key string offsets are relative to the start of the resource data (of the root handle), |
| * i.e., the first string has an offset of 4+sizeof(indexes). |
| * (After the 4-byte root handle and after the indexes array.) |
| * |
| * If the resource bundle uses a pool bundle, then some key strings are stored |
| * in the pool bundle rather than in the local bundle itself. |
| * - In a Table or Table16, the 16-bit key string offset is local if it is |
| * less than indexes[URES_INDEX_KEYS_TOP]<<2. |
| * Otherwise, subtract indexes[URES_INDEX_KEYS_TOP]<<2 to get the offset into |
| * the pool bundle key strings. |
| * - In a Table32, the 32-bit key string offset is local if it is non-negative. |
| * Otherwise, reset bit 31 to get the pool key string offset. |
| * |
| * Unlike the local offset, the pool key offset is relative to |
| * the start of the key strings, not to the start of the bundle. |
| * |
| * An alias item is special (and new in ICU 2.4): -------------- |
| * |
| * Its memory layout is just like for a UnicodeString, but at runtime it resolves to |
| * another resource bundle's item according to the path in the string. |
| * This is used to share items across bundles that are in different lookup/fallback |
| * chains (e.g., large collation data among zh_TW and zh_HK). |
| * This saves space (for large items) and maintenance effort (less duplication of data). |
| * |
| * -------------------------------------------------------------------------- |
| * |
| * Resource types: |
| * |
| * Most resources have their values stored at four-byte offsets from the start |
| * of the resource data. These values are at least 4-aligned. |
| * Some resource values are stored directly in the offset field of the Resource itself. |
| * See UResType in unicode/ures.h for enumeration constants for Resource types. |
| * |
| * Some resources have their values stored as sequences of 16-bit units, |
| * at 2-byte offsets from the start of a contiguous 16-bit-unit array between |
| * the table key strings and the other resources. (new in formatVersion 2/ICU 4.4) |
| * At offset 0 of that array is a 16-bit zero value for empty 16-bit resources. |
| * Resource16 values in Table16 and Array16 are 16-bit offsets to String-v2 |
| * resources, with the offsets relative to the start of the 16-bit-units array. |
| * |
| * Type Name Memory layout of values |
| * (in parentheses: scalar, non-offset values) |
| * |
| * 0 Unicode String: int32_t length, UChar[length], (UChar)0, (padding) |
| * or (empty string ("") if offset==0) |
| * 1 Binary: int32_t length, uint8_t[length], (padding) |
| * - the start of the bytes is 16-aligned - |
| * 2 Table: uint16_t count, uint16_t keyStringOffsets[count], (uint16_t padding), Resource[count] |
| * 3 Alias: (physically same value layout as string, new in ICU 2.4) |
| * 4 Table32: int32_t count, int32_t keyStringOffsets[count], Resource[count] |
| * (new in formatVersion 1.1/ICU 2.8) |
| * 5 Table16: uint16_t count, uint16_t keyStringOffsets[count], Resource16[count] |
| * (stored in the 16-bit-units array; new in formatVersion 2/ICU 4.4) |
| * 6 Unicode String-v2:UChar[length], (UChar)0; length determined by the first UChar: |
| * - if first is not a trail surrogate, then the length is implicit |
| * and u_strlen() needs to be called |
| * - if first<0xdfef then length=first&0x3ff (and skip first) |
| * - if first<0xdfff then length=((first-0xdfef)<<16) | second UChar |
| * - if first==0xdfff then length=((second UChar)<<16) | third UChar |
| * (stored in the 16-bit-units array; new in formatVersion 2/ICU 4.4) |
| * 7 Integer: (28-bit offset is integer value) |
| * 8 Array: int32_t count, Resource[count] |
| * 9 Array16: uint16_t count, Resource16[count] |
| * (stored in the 16-bit-units array; new in formatVersion 2/ICU 4.4) |
| * 14 Integer Vector: int32_t length, int32_t[length] |
| * 15 Reserved: This value denotes special purpose resources and is for internal use. |
| * |
| * Note that there are 3 types with data vector values: |
| * - Vectors of 8-bit bytes stored as type Binary. |
| * - Vectors of 16-bit words stored as type Unicode String or Unicode String-v2 |
| * (no value restrictions, all values 0..ffff allowed!). |
| * - Vectors of 32-bit words stored as type Integer Vector. |
| */ |
| |
| /* |
| * Structure for a single, memory-mapped ResourceBundle. |
| */ |
| typedef struct { |
| UDataMemory *data; |
| const int32_t *pRoot; |
| const uint16_t *p16BitUnits; |
| const char *poolBundleKeys; |
| Resource rootRes; |
| int32_t localKeyLimit; |
| UBool noFallback; /* see URES_ATT_NO_FALLBACK */ |
| UBool isPoolBundle; |
| UBool usesPoolBundle; |
| UBool useNativeStrcmp; |
| } ResourceData; |
| |
| /* |
| * Read a resource bundle from memory. |
| */ |
| U_INTERNAL void U_EXPORT2 |
| res_read(ResourceData *pResData, |
| const UDataInfo *pInfo, const void *inBytes, int32_t length, |
| UErrorCode *errorCode); |
| |
| /* |
| * Load a resource bundle file. |
| * The ResourceData structure must be allocated externally. |
| */ |
| U_CFUNC void |
| res_load(ResourceData *pResData, |
| const char *path, const char *name, UErrorCode *errorCode); |
| |
| /* |
| * Release a resource bundle file. |
| * This does not release the ResourceData structure itself. |
| */ |
| U_CFUNC void |
| res_unload(ResourceData *pResData); |
| |
| U_INTERNAL UResType U_EXPORT2 |
| res_getPublicType(Resource res); |
| |
| /* |
| * Return a pointer to a zero-terminated, const UChar* string |
| * and set its length in *pLength. |
| * Returns NULL if not found. |
| */ |
| U_INTERNAL const UChar * U_EXPORT2 |
| res_getString(const ResourceData *pResData, Resource res, int32_t *pLength); |
| |
| U_INTERNAL const UChar * U_EXPORT2 |
| res_getAlias(const ResourceData *pResData, Resource res, int32_t *pLength); |
| |
| U_INTERNAL const uint8_t * U_EXPORT2 |
| res_getBinary(const ResourceData *pResData, Resource res, int32_t *pLength); |
| |
| U_INTERNAL const int32_t * U_EXPORT2 |
| res_getIntVector(const ResourceData *pResData, Resource res, int32_t *pLength); |
| |
| U_INTERNAL Resource U_EXPORT2 |
| res_getResource(const ResourceData *pResData, const char *key); |
| |
| U_INTERNAL int32_t U_EXPORT2 |
| res_countArrayItems(const ResourceData *pResData, Resource res); |
| |
| U_INTERNAL Resource U_EXPORT2 |
| res_getArrayItem(const ResourceData *pResData, Resource array, int32_t indexS); |
| |
| U_INTERNAL Resource U_EXPORT2 |
| res_getTableItemByIndex(const ResourceData *pResData, Resource table, int32_t indexS, const char ** key); |
| |
| U_INTERNAL Resource U_EXPORT2 |
| res_getTableItemByKey(const ResourceData *pResData, Resource table, int32_t *indexS, const char* * key); |
| |
| /* |
| * Modifies the contents of *path (replacing separators with NULs), |
| * and also moves *path forward while it finds items. |
| */ |
| U_CFUNC Resource res_findResource(const ResourceData *pResData, Resource r, char** path, const char** key); |
| |
| /** |
| * Swap an ICU resource bundle. See udataswp.h. |
| * @internal |
| */ |
| U_CAPI int32_t U_EXPORT2 |
| ures_swap(const UDataSwapper *ds, |
| const void *inData, int32_t length, void *outData, |
| UErrorCode *pErrorCode); |
| |
| #endif |
