1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/os/textandloc/fontservices/textshaperplugin/IcuSource/common/ucmndata.h	Fri Jun 15 03:10:57 2012 +0200
     1.3 @@ -0,0 +1,109 @@
     1.4 +/*
     1.5 +******************************************************************************
     1.6 +*
     1.7 +*   Copyright (C) 1999-2003, International Business Machines
     1.8 +*   Corporation and others.  All Rights Reserved.
     1.9 +*
    1.10 +******************************************************************************/
    1.11 +
    1.12 +
    1.13 +/*----------------------------------------------------------------------------------
    1.14 + *
    1.15 + *   UCommonData   An abstract interface for dealing with ICU Common Data Files.
    1.16 + *                 ICU Common Data Files are a grouping of a number of individual
    1.17 + *                 data items (resources, converters, tables, anything) into a
    1.18 + *                 single file or dll.  The combined format includes a table of
    1.19 + *                 contents for locating the individual items by name.
    1.20 + *
    1.21 + *                 Two formats for the table of contents are supported, which is
    1.22 + *                 why there is an abstract inteface involved.
    1.23 + *
    1.24 + *                 These functions are part of the ICU internal implementation, and
    1.25 + *                 are not inteded to be used directly by applications.
    1.26 + */
    1.27 +
    1.28 +#ifndef __UCMNDATA_H__
    1.29 +#define __UCMNDATA_H__
    1.30 +
    1.31 +#include "unicode/udata.h"
    1.32 +#include "umapfile.h"
    1.33 +
    1.34 +
    1.35 +#define COMMON_DATA_NAME U_ICUDATA_NAME
    1.36 +
    1.37 +typedef struct  {
    1.38 +    uint16_t    headerSize;
    1.39 +    uint8_t     magic1;
    1.40 +    uint8_t     magic2;
    1.41 +} MappedData;
    1.42 +
    1.43 +
    1.44 +typedef struct  {
    1.45 +    MappedData  dataHeader;
    1.46 +    UDataInfo   info;
    1.47 +} DataHeader;
    1.48 +
    1.49 +typedef struct {
    1.50 +    uint32_t nameOffset;
    1.51 +    uint32_t dataOffset;
    1.52 +} UDataOffsetTOCEntry;
    1.53 +
    1.54 +typedef struct {
    1.55 +    uint32_t count;
    1.56 +    UDataOffsetTOCEntry entry[2];    /* Actual size of array is from count. */
    1.57 +} UDataOffsetTOC;
    1.58 +
    1.59 +/**
    1.60 + * Get the header size from a const DataHeader *udh.
    1.61 + * Handles opposite-endian data.
    1.62 + *
    1.63 + * @internal
    1.64 + */
    1.65 +U_CFUNC uint16_t
    1.66 +udata_getHeaderSize(const DataHeader *udh);
    1.67 +
    1.68 +/**
    1.69 + * Get the UDataInfo.size from a const UDataInfo *info.
    1.70 + * Handles opposite-endian data.
    1.71 + *
    1.72 + * @internal
    1.73 + */
    1.74 +U_CFUNC uint16_t
    1.75 +udata_getInfoSize(const UDataInfo *info);
    1.76 +
    1.77 +/*
    1.78 + *  "Virtual" functions for data lookup.
    1.79 + *  To call one, given a UDataMemory *p, the code looks like this:
    1.80 + *     p->vFuncs.Lookup(p, tocEntryName, pErrorCode);
    1.81 + *          (I sure do wish this was written in C++, not C)
    1.82 + */
    1.83 +
    1.84 +typedef const DataHeader *
    1.85 +(* LookupFn)(const UDataMemory *pData,
    1.86 +             const char *tocEntryName,
    1.87 +             int32_t *pLength,
    1.88 +             UErrorCode *pErrorCode);
    1.89 +
    1.90 +typedef uint32_t
    1.91 +(* NumEntriesFn)(const UDataMemory *pData);
    1.92 +
    1.93 +typedef struct {
    1.94 +    LookupFn      Lookup;
    1.95 +    NumEntriesFn  NumEntries; 
    1.96 +} commonDataFuncs;
    1.97 +
    1.98 +
    1.99 +/*
   1.100 + *  Functions to check whether a UDataMemory refers to memory containing 
   1.101 + *     a recognizable header and table of contents a Common Data Format
   1.102 + *
   1.103 + *     If a valid header and TOC are found,
   1.104 + *         set the CommonDataFuncs function dispatch vector in the UDataMemory
   1.105 + *             to point to the right functions for the TOC type.
   1.106 + *     otherwise
   1.107 + *         set an errorcode.
   1.108 + */
   1.109 +void   udata_checkCommonData(UDataMemory *pData, UErrorCode *pErrorCode);
   1.110 +
   1.111 +
   1.112 +#endif