ICU-64260.0.1.tar.gz

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

diff --git a/icuSources/common/uresdata.h b/icuSources/common/uresdata.h
index 92a8667d6f2e8e6540ff8e62111f89b28e852cd5..4e28ddccf63199a4dac23fb14dc73aba509b7f90 100644 (file)
--- a/icuSources/common/uresdata.h
+++ b/icuSources/common/uresdata.h
@@ -1,12 +1,12 @@
+// © 2016 and later: Unicode, Inc. and others.
+// License & terms of use: http://www.unicode.org/copyright.html

 /*
 ******************************************************************************
 /*
 ******************************************************************************

-*                                                                            *
-* Copyright (C) 1999-2003, International Business Machines                   *
-*                Corporation and others. All Rights Reserved.                *
-*                                                                            *
+* Copyright (C) 1999-2016, International Business Machines
+*                Corporation and others. All Rights Reserved.

 ******************************************************************************
 *   file name:  uresdata.h
 ******************************************************************************
 *   file name:  uresdata.h

-*   encoding:   US-ASCII
+*   encoding:   UTF-8

 *   tab size:   8 (not used)
 *   indentation:4
 *
 *   tab size:   8 (not used)
 *   indentation:4
 *


@@ -20,8 +20,41 @@
 
 #include "unicode/utypes.h"
 #include "unicode/udata.h"
 
 #include "unicode/utypes.h"
 #include "unicode/udata.h"

+#include "unicode/ures.h"
+#include "putilimp.h"

 #include "udataswp.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
+
+    /* Resource type 15 is not defined but effectively used by RES_BOGUS=0xffffffff. */
+} UResInternalType;
+

 /*
  * A Resource is a 32-bit value that has 2 bit fields:
  * 31..28   4-bit type, see enum below
 /*
  * A Resource is a 32-bit value that has 2 bit fields:
  * 31..28   4-bit type, see enum below


@@ -30,34 +63,169 @@
 typedef uint32_t Resource;
 
 #define RES_BOGUS 0xffffffff
 typedef uint32_t Resource;
 
 #define RES_BOGUS 0xffffffff

+#define RES_MAX_OFFSET 0x0fffffff

 
 

-#define RES_GET_TYPE(res) ((res)>>28UL)
+#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 */
 #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 */

-#define RES_GET_INT(res) (((int32_t)((res)<<4L))>>4L)
+#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 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 {
 /* indexes[] value names; indexes are generally 32-bit (Resource) indexes */
 enum {

-    URES_INDEX_LENGTH,          /* [0] contains URES_INDEX_TOP==the length of indexes[] */
-    URES_INDEX_STRINGS_TOP,     /* [1] contains the top of the strings, */
-                                /*     same as the bottom of resources, 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 */
+    /**
+     * [0] contains the length of indexes[]
+     * which is at most URES_INDEX_TOP of the latest format version
+     *
+     * 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
+     * formatVersion>=3:
+     *        bits 31..8 poolStringIndexLimit bits 23..0
+     */
+    URES_INDEX_LENGTH,
+    /**
+     * [1] contains the top of the key strings,
+     *     same as the bottom of resources or UTF-16 strings, rounded up
+     */
+    URES_INDEX_KEYS_TOP,
+    /** [2] contains the top of all resources */
+    URES_INDEX_RESOURCES_TOP,
+    /**
+     * [3] contains the top of the bundle,
+     *     in case it were ever different from [2]
+     */
+    URES_INDEX_BUNDLE_TOP,
+    /** [4] max. length of any table */
+    URES_INDEX_MAX_TABLE_LENGTH,
+    /**
+     * [5] attributes bit set, see URES_ATT_* (new in formatVersion 1.2)
+     *
+     * formatVersion>=3:
+     *   bits 31..16 poolStringIndex16Limit
+     *   bits 15..12 poolStringIndexLimit bits 27..24
+     */
+    URES_INDEX_ATTRIBUTES,
+    /**
+     * [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_16BIT_TOP,
+    /** [7] checksum of the pool bundle (new in formatVersion 2.0, ICU 4.4) */
+    URES_INDEX_POOL_CHECKSUM,

     URES_INDEX_TOP
 };
 
     URES_INDEX_TOP
 };
 

-/* number of bytes at the beginning of the bundle before the strings start */
-enum {
-    URES_STRINGS_BOTTOM=(1+URES_INDEX_TOP)*4
-};
+/*
+ * 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=1.1)
+ * File format for .res resource bundle files
+ *
+ * ICU 56: New in formatVersion 3 compared with 2: -------------
+ *
+ * Resource bundles can optionally use shared string-v2 values
+ * stored in the pool bundle.
+ * If so, then the indexes[] contain two new values
+ * in previously-unused bits of existing indexes[] slots:
+ * - poolStringIndexLimit:
+ *     String-v2 offsets (in 32-bit Resource words) below this limit
+ *     point to pool bundle string-v2 values.
+ * - poolStringIndex16Limit:
+ *     Resource16 string-v2 offsets below this limit
+ *     point to pool bundle string-v2 values.
+ * Guarantee: poolStringIndex16Limit <= poolStringIndexLimit
+ *
+ * The local bundle's poolStringIndexLimit is greater than
+ * any pool bundle string index used in the local bundle.
+ * The poolStringIndexLimit should not be greater than
+ * the maximum possible pool bundle string index.
+ *
+ * The maximum possible pool bundle string index is the index to the last non-NUL
+ * pool string character, due to suffix sharing.
+ *
+ * In the pool bundle, there is no structure that lists the strings.
+ * (The root resource is an empty Table.)
+ * If the strings need to be enumerated (as genrb --usePoolBundle does),
+ * then iterate through the pool bundle's 16-bit-units array from the beginning.
+ * Stop at the end of the array, or when an explicit or implicit string length
+ * would lead beyond the end of the array,
+ * or when an apparent string is not NUL-terminated.
+ * (Future genrb version might terminate the strings with
+ * what looks like a large explicit string length.)
+ *
+ * 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.
  *
  * An ICU4C resource bundle file (.res) is a binary, memory-mappable file
  * with nested, hierarchical data structures.


@@ -67,12 +235,18 @@ enum {
  *                     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
  *                     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
+ *                                   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
  *   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
  *
  *   data; -- data directly and indirectly indexed by the root item;
  *            the structure is determined by walking the tree
  *


@@ -83,8 +257,17 @@ enum {
  * 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.
  *
  * 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.
  * 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.
  *
  * - Integer values are 28-bit values stored in the Resource handle itself;
  *   the interpretation of unsigned vs. signed integers is up to the application.
  *


@@ -94,18 +277,38 @@ enum {
  * To get byte offsets, the offset is multiplied by 4 (or shifted left by 2 bits).
  * All resource item values are 4-aligned.
  *
  * 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
  * The structures (memory layouts) for the values for each item type are listed

- * in the table above.
+ * in the table below.

  *
  * Nested, hierarchical structures: -------------
  *
  *
  * Nested, hierarchical structures: -------------
  *

- * Table items contain key-value pairs where the keys are 16-bit offsets to char * key strings.
- * Key string offsets are also relative to the start of the resource data (of the root handle),
- * i.e., the first string has an offset of 4 (after the 4-byte root handle).
+ * 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.

  *
  *

- * The values of these pairs are Resource handles.
+ * Array items are simple vectors of Resource handles,
+ * or of offsets into the 16-bit-units array, depending on the array type.

  *
  *

- * Array items are simple vectors of Resource handles.
+ * 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): --------------
  *
  *
  * An alias item is special (and new in ICU 2.4): --------------
  *


@@ -124,27 +327,53 @@ enum {
  * 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 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.
+ * Starting with formatVersion 3/ICU 56, if offset<poolStringIndex16Limit
+ * then use the pool bundle's 16-bit-units array,
+ * otherwise subtract that limit and use the local 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)
  * 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)

- *                      - this value should be 32-aligned -
+ *                      - 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)
  * 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)
+ *
+ *                      Starting with formatVersion 3/ICU 56, if offset<poolStringIndexLimit
+ *                      then use the pool bundle's 16-bit-units array,
+ *                      otherwise subtract that limit and use the local 16-bit-units array.
+ *                      (Note different limits for Resource16 vs. Resource.)

  *
  * 7  Integer:          (28-bit offset is integer value)
  * 8  Array:            int32_t count, Resource[count]
  *
  * 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.
  * 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
+ * - 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.
  */
  *                     (no value restrictions, all values 0..ffff allowed!).
  * - Vectors of 32-bit words stored as type Integer Vector.
  */


@@ -152,17 +381,35 @@ enum {
 /*
  * Structure for a single, memory-mapped ResourceBundle.
  */
 /*
  * Structure for a single, memory-mapped ResourceBundle.
  */

-typedef struct {
+typedef struct ResourceData {

     UDataMemory *data;
     UDataMemory *data;

-    Resource *pRoot;
+    const int32_t *pRoot;
+    const uint16_t *p16BitUnits;
+    const char *poolBundleKeys;

     Resource rootRes;
     Resource rootRes;

+    int32_t localKeyLimit;
+    const uint16_t *poolBundleStrings;
+    int32_t poolStringIndexLimit;
+    int32_t poolStringIndex16Limit;
+    UBool noFallback; /* see URES_ATT_NO_FALLBACK */
+    UBool isPoolBundle;
+    UBool usesPoolBundle;
+    UBool useNativeStrcmp;

 } ResourceData;
 
 } 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.
  */
 /*
  * Load a resource bundle file.
  * The ResourceData structure must be allocated externally.
  */

-U_CFUNC UBool
+U_CFUNC void

 res_load(ResourceData *pResData,
          const char *path, const char *name, UErrorCode *errorCode);
 
 res_load(ResourceData *pResData,
          const char *path, const char *name, UErrorCode *errorCode);
 


@@ -173,38 +420,92 @@ res_load(ResourceData *pResData,
 U_CFUNC void
 res_unload(ResourceData *pResData);
 
 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.
  */
 /*
  * Return a pointer to a zero-terminated, const UChar* string
  * and set its length in *pLength.
  * Returns NULL if not found.
  */

-U_CFUNC const UChar *
-res_getString(const ResourceData *pResData, const Resource res, int32_t *pLength);
+U_INTERNAL const UChar * U_EXPORT2
+res_getString(const ResourceData *pResData, Resource res, int32_t *pLength);

 
 

-U_CFUNC const UChar *
-res_getAlias(const ResourceData *pResData, const Resource res, int32_t *pLength);
+U_INTERNAL const UChar * U_EXPORT2
+res_getAlias(const ResourceData *pResData, Resource res, int32_t *pLength);

 
 

-U_CFUNC const uint8_t *
-res_getBinary(const ResourceData *pResData, const Resource res, int32_t *pLength);
+U_INTERNAL const uint8_t * U_EXPORT2
+res_getBinary(const ResourceData *pResData, Resource res, int32_t *pLength);

 
 

-U_CFUNC const int32_t *
-res_getIntVector(const ResourceData *pResData, const Resource res, int32_t *pLength);
+U_INTERNAL const int32_t * U_EXPORT2
+res_getIntVector(const ResourceData *pResData, Resource res, int32_t *pLength);

 
 

-U_CFUNC Resource
+U_INTERNAL Resource U_EXPORT2

 res_getResource(const ResourceData *pResData, const char *key);
 
 res_getResource(const ResourceData *pResData, const char *key);
 

-U_CFUNC int32_t
-res_countArrayItems(const ResourceData *pResData, const Resource res);
+U_INTERNAL int32_t U_EXPORT2
+res_countArrayItems(const ResourceData *pResData, Resource res);

 
 

-U_CFUNC Resource res_getArrayItem(const ResourceData *pResData, Resource array, const int32_t indexS);
-U_CFUNC Resource res_getTableItemByIndex(const ResourceData *pResData, Resource table, int32_t indexS, const char ** key);
-U_CFUNC Resource res_getTableItemByKey(const ResourceData *pResData, Resource table, int32_t *indexS, const char* * key);
+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);
+
+/**
+ * Iterates over the path and stops when a scalar resource is found.
+ * Follows aliases.

  * Modifies the contents of *path (replacing separators with NULs),
  * and also moves *path forward while it finds items.
  * Modifies the contents of *path (replacing separators with NULs),
  * and also moves *path forward while it finds items.

+ *
+ * @param path input: "CollationElements/Sequence" or "zoneStrings/3/2" etc.;
+ *             output: points to the part that has not yet been processed

  */
  */

-U_CFUNC Resource res_findResource(const ResourceData *pResData, Resource r, char** path, const char** key);
+U_CFUNC Resource res_findResource(const ResourceData *pResData, Resource r,
+                                  char** path, const char** key);
+
+#ifdef __cplusplus
+
+#include "resource.h"
+
+U_NAMESPACE_BEGIN
+
+class ResourceDataValue : public ResourceValue {
+public:
+    ResourceDataValue() : pResData(NULL), res(static_cast<Resource>(URES_NONE)) {}
+    virtual ~ResourceDataValue();
+
+    void setData(const ResourceData *data) { pResData = data; }
+    void setResource(Resource r) { res = r; }
+
+    virtual UResType getType() const;
+    virtual const UChar *getString(int32_t &length, UErrorCode &errorCode) const;
+    virtual const UChar *getAliasString(int32_t &length, UErrorCode &errorCode) const;
+    virtual int32_t getInt(UErrorCode &errorCode) const;
+    virtual uint32_t getUInt(UErrorCode &errorCode) const;
+    virtual const int32_t *getIntVector(int32_t &length, UErrorCode &errorCode) const;
+    virtual const uint8_t *getBinary(int32_t &length, UErrorCode &errorCode) const;
+    virtual ResourceArray getArray(UErrorCode &errorCode) const;
+    virtual ResourceTable getTable(UErrorCode &errorCode) const;
+    virtual UBool isNoInheritanceMarker() const;
+    virtual int32_t getStringArray(UnicodeString *dest, int32_t capacity,
+                                   UErrorCode &errorCode) const;
+    virtual int32_t getStringArrayOrStringAsArray(UnicodeString *dest, int32_t capacity,
+                                                  UErrorCode &errorCode) const;
+    virtual UnicodeString getStringOrFirstOfArray(UErrorCode &errorCode) const;
+
+    const ResourceData *pResData;
+
+private:
+    Resource res;
+};
+
+U_NAMESPACE_END
+
+#endif  /* __cplusplus */

 
 /**
  * Swap an ICU resource bundle. See udataswp.h.
 
 /**
  * Swap an ICU resource bundle. See udataswp.h.