icuSources/samples/udata/reader.c

   1 /*
   2  *******************************************************************************
   3  *
   4  *   © 2016 and later: Unicode, Inc. and others.
   5  *   License & terms of use: http://www.unicode.org/copyright.html#License
   6  *
   7  *******************************************************************************
   8  *******************************************************************************
   9  *
  10  *   Copyright (C) 1999-2009, International Business Machines
  11  *   Corporation and others.  All Rights Reserved.
  12  *
  13  *******************************************************************************
  14  *   file name:  reader.c
  15  *   encoding:   UTF-8
  16  *   tab size:   8 (not used)
  17  *   indentation:4
  18  *
  19  *   created on: 2000sep5
  20  *   created by: Vladimir Weinstein
  21  */
  22
  23 /*******************************************************************************
  24  * Derived from Madhu Katragadda gentest
  25  *******************************************************************************/
  26
  27
  28 #include <string.h>
  29 #include <stdio.h>
  30 #include <stdlib.h>
  31 #ifdef WIN32
  32 #include <direct.h>
  33 #else
  34 #include <unistd.h>
  35 #endif
  36 #include "unicode/utypes.h"
  37 #include "unicode/putil.h"
  38 #include "unicode/udata.h"
  39
  40 #define DATA_NAME "mypkg_example"
  41 #define DATA_TYPE "dat"
  42
  43 /* UDataInfo cf. udata.h */
  44 static const UDataInfo dataInfo={
  45     sizeof(UDataInfo),
  46     0,
  47
  48     U_IS_BIG_ENDIAN,
  49     U_CHARSET_FAMILY,
  50     sizeof(UChar),
  51     0,
  52
  53     0x4D, 0x79, 0x44, 0x74,     /* dataFormat="MyDt" */
  54     1, 0, 0, 0,                 /* formatVersion */
  55     1, 0, 0, 0                  /* dataVersion */
  56 };
  57
  58 static UBool
  59 isAcceptable(void *context,
  60              const char *type, const char *name,
  61              const UDataInfo *pInfo){
  62
  63     if( pInfo->size>=20 &&
  64         pInfo->isBigEndian==U_IS_BIG_ENDIAN &&
  65         pInfo->charsetFamily==U_CHARSET_FAMILY &&
  66         pInfo->dataFormat[0]==0x4D &&   /* dataFormat="MyDt" */
  67         pInfo->dataFormat[1]==0x79 &&
  68         pInfo->dataFormat[2]==0x44 &&
  69         pInfo->dataFormat[3]==0x74 &&
  70         pInfo->formatVersion[0]==1 &&
  71         pInfo->dataVersion[0]==1   ) {
  72         return TRUE;
  73     } else {
  74         return FALSE;
  75     }
  76
  77
  78 }
  79
  80 extern int
  81 main(int argc, const char *argv[]) {
  82     UDataMemory *result = NULL;
  83     UErrorCode status=U_ZERO_ERROR;
  84
  85     uint16_t intValue = 0;
  86
  87     char *string = NULL;
  88     uint16_t *intPointer = NULL;
  89
  90     const void *dataMemory = NULL;
  91     char curPathBuffer[1024];
  92
  93 #ifdef WIN32
  94     char *currdir = _getcwd(NULL, 0);
  95 #else
  96     char *currdir = getcwd(NULL, 0);
  97 #endif
  98
  99     /* need to put  "current/dir" as path */
 100     strcpy(curPathBuffer, currdir);
 101
 102     result=udata_openChoice(curPathBuffer, DATA_TYPE, DATA_NAME, isAcceptable, NULL, &status);
 103
 104     if(currdir != NULL) {
 105         free(currdir);
 106     }
 107
 108     if(U_FAILURE(status)){
 109         printf("Failed to open data file example.dat in %s with error number %d\n", curPathBuffer, status);
 110         return -1;
 111     }
 112
 113     dataMemory = udata_getMemory(result);
 114
 115     intPointer = (uint16_t *)dataMemory;
 116
 117     printf("Read value %d from data file\n", *intPointer);
 118
 119     string = (char *) (intPointer+1);
 120
 121     printf("Read string %s from data file\n", string);
 122
 123     if(U_SUCCESS(status)){
 124         udata_close(result);
 125     }
 126
 127     return 0;
 128 }
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