117 lines
3.4 KiB
C
117 lines
3.4 KiB
C
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/*
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*******************************************************************************
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* *
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* Copyright (C) 1999, International Business Machines Corporation and others. *
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* All Rights Reserved. *
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* *
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*******************************************************************************
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* file name: uresdata.h
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* encoding: US-ASCII
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* tab size: 8 (not used)
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* indentation:4
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*
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* created on: 1999dec08
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* created by: Markus W. Scherer
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*/
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#ifndef __RESDATA_H__
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#define __RESDATA_H__
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#include "utypes.h"
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#include "udata.h"
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/*
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* A Resource is a 32-bit value that has 2 bit fields:
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* 31..28 4-bit type, see enum below
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* 27..0 28-bit four-byte-offset or value according to the type
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*/
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typedef uint32_t Resource;
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#define RES_BOGUS 0xffffffff
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#define RES_GET_TYPE(res) ((res)>>28UL)
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#define RES_GET_OFFSET(res) ((res)&0xfffffff)
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#define RES_GET_POINTER(pRoot, res) ((pRoot)+RES_GET_OFFSET(res))
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/*
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* Resource types:
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* Most resources have their values stored at four-byte offsets from the start
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* of the resource data. These values are at least 4-aligned.
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* Some resource values are stored directly in the offset field of the Resource itself.
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*
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* Type Name Memory layout of values
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* (in parentheses: scalar, non-offset values)
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*
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* 0 Unicode String: int32_t length, UChar[length], (UChar)0, (padding)
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* or (empty string ("") if offset==0)
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*
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* 1 Integer Vector: int32_t length, int32_t[length]
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* 2 Binary: int32_t length, uint8_t[length], (padding)
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* - this value should be 16-aligned -
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*
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* 7 Integer: (28-bit offset is integer value)
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*
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* 14 Array: int32_t count, Resource[count]
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* 15 Table: uint16_t count, uint16_t keyStringOffsets[count], (uint16_t padding), Resource[count]
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*/
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enum {
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RES_STRING,
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RES_INT_VECTOR,
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RES_BINARY,
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RES_INT=7,
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RES_ARRAY=14,
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RES_TABLE
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};
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/*
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* Structure for a single, memory-mapped ResourceBundle.
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*/
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typedef struct {
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UDataMemory *data;
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Resource *pRoot;
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Resource rootRes;
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} ResourceData;
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/*
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* Load a resource bundle file.
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* The ResourceData structure must be allocated externally.
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*/
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U_CFUNC bool_t
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res_load(ResourceData *pResData,
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const char *path, const char *name, UErrorCode *errorCode);
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/*
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* Release a resource bundle file.
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* This does not release the ResourceData structure itself.
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*/
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U_CFUNC void
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res_unload(ResourceData *pResData);
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/*
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* Return a pointer to a zero-terminated, const UChar* string
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* and set its length in *pLength.
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* Returns NULL if not found.
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*/
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U_CFUNC const UChar *
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res_getString(ResourceData *pResData, const char *key, int32_t *pLength);
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/*
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* Get a Resource handle for an array of strings, and get the number of strings.
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* Returns RES_BOGUS if not found.
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*/
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U_CFUNC Resource
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res_getStringArray(ResourceData *pResData, const char *key, int32_t *pCount);
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/*
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* Get a string from a string array.
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* This assumes that arrayRes is a valid handle to an array of strings as returned
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* by res_getStringArray(), and that index is within bounds.
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*/
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U_CFUNC const UChar *
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res_getStringArrayItem(ResourceData *pResData,
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Resource arrayRes, int32_t index, int32_t *pLength);
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#endif
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