icuSources/samples/udata/reader.c

   1 /*
   2  *******************************************************************************
   3  *
   4  *   Copyright (C) 1999-2009, International Business Machines
   5  *   Corporation and others.  All Rights Reserved.
   6  *
   7  *******************************************************************************
   8  *   file name:  reader.c
   9  *   encoding:   US-ASCII
  10  *   tab size:   8 (not used)
  11  *   indentation:4
  12  *
  13  *   created on: 2000sep5
  14  *   created by: Vladimir Weinstein
  15  */
  16
  17 /*******************************************************************************
  18  * Derived from Madhu Katragadda gentest
  19  *******************************************************************************/
  20
  21
  22 #include <string.h>
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #ifdef WIN32
  26 #include <direct.h>
  27 #else
  28 #include <unistd.h>
  29 #endif
  30 #include "unicode/utypes.h"
  31 #include "unicode/putil.h"
  32 #include "unicode/udata.h"
  33
  34 #define DATA_NAME "mypkg_example"
  35 #define DATA_TYPE "dat"
  36
  37 /* UDataInfo cf. udata.h */
  38 static const UDataInfo dataInfo={
  39     sizeof(UDataInfo),
  40     0,
  41
  42     U_IS_BIG_ENDIAN,
  43     U_CHARSET_FAMILY,
  44     sizeof(UChar),
  45     0,
  46
  47     0x4D, 0x79, 0x44, 0x74,     /* dataFormat="MyDt" */
  48     1, 0, 0, 0,                 /* formatVersion */
  49     1, 0, 0, 0                  /* dataVersion */
  50 };
  51
  52 static UBool
  53 isAcceptable(void *context,
  54              const char *type, const char *name,
  55              const UDataInfo *pInfo){
  56
  57     if( pInfo->size>=20 &&
  58         pInfo->isBigEndian==U_IS_BIG_ENDIAN &&
  59         pInfo->charsetFamily==U_CHARSET_FAMILY &&
  60         pInfo->dataFormat[0]==0x4D &&   /* dataFormat="MyDt" */
  61         pInfo->dataFormat[1]==0x79 &&
  62         pInfo->dataFormat[2]==0x44 &&
  63         pInfo->dataFormat[3]==0x74 &&
  64         pInfo->formatVersion[0]==1 &&
  65         pInfo->dataVersion[0]==1   ) {
  66         return TRUE;
  67     } else {
  68         return FALSE;
  69     }
  70
  71
  72 }
  73
  74 extern int
  75 main(int argc, const char *argv[]) {
  76     UDataMemory *result = NULL;
  77     UErrorCode status=U_ZERO_ERROR;
  78
  79     uint16_t intValue = 0;
  80
  81     char *string = NULL;
  82     uint16_t *intPointer = NULL;
  83
  84     const void *dataMemory = NULL;
  85     char curPathBuffer[1024];
  86
  87 #ifdef WIN32
  88     char *currdir = _getcwd(NULL, 0);
  89 #else
  90     char *currdir = getcwd(NULL, 0);
  91 #endif
  92
  93     /* need to put  "current/dir" as path */
  94     strcpy(curPathBuffer, currdir);
  95
  96     result=udata_openChoice(curPathBuffer, DATA_TYPE, DATA_NAME, isAcceptable, NULL, &status);
  97
  98     if(currdir != NULL) {
  99         free(currdir);
 100     }
 101
 102     if(U_FAILURE(status)){
 103         printf("Failed to open data file example.dat in %s with error number %d\n", curPathBuffer, status);
 104         return -1;
 105     }
 106
 107     dataMemory = udata_getMemory(result);
 108
 109     intPointer = (uint16_t *)dataMemory;
 110
 111     printf("Read value %d from data file\n", *intPointer);
 112
 113     string = (char *) (intPointer+1);
 114
 115     printf("Read string %s from data file\n", string);
 116
 117     if(U_SUCCESS(status)){
 118         udata_close(result);
 119     }
 120
 121     return 0;
 122 }
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