icuSources/samples/udata/writer.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) 1999-2006, International Business Machines
  11 *   Corporation and others.  All Rights Reserved.
  12 *
  13 *******************************************************************************
  14 *   file name:  writer.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  * A program to write simple binary data readable by udata - example for
  25  * ICU workshop
  26  ******************************************************************************/
  27
  28
  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/udata.h"
  38
  39 /* this is private - available only through toolutil */
  40 #include "unewdata.h"
  41
  42 #define DATA_NAME "mypkg_example"
  43 #define DATA_TYPE "dat"
  44
  45 /* UDataInfo cf. udata.h */
  46 static const UDataInfo dataInfo={
  47     sizeof(UDataInfo),
  48     0,
  49
  50     U_IS_BIG_ENDIAN,
  51     U_CHARSET_FAMILY,
  52     sizeof(UChar),
  53     0,
  54
  55     0x4D, 0x79, 0x44, 0x74,     /* dataFormat="MyDt" */
  56     1, 0, 0, 0,                 /* formatVersion */
  57     1, 0, 0, 0                  /* dataVersion */
  58 };
  59
  60
  61 /* Excersise: add writing out other data types */
  62 /* see icu/source/tools/toolutil/unewdata.h    */
  63 /* for other possibilities                     */
  64
  65 extern int
  66 main(int argc, const char *argv[]) {
  67     UNewDataMemory *pData;
  68     UErrorCode errorCode=U_ZERO_ERROR;
  69     char stringValue[]={'E', 'X', 'A', 'M', 'P', 'L', 'E', '\0'};
  70     uint16_t intValue=2000;
  71
  72     long dataLength;
  73     uint32_t size;
  74 #ifdef WIN32
  75     char *currdir = _getcwd(NULL, 0);
  76 #else
  77     char *currdir = getcwd(NULL, 0);
  78 #endif
  79
  80     pData=udata_create(currdir, DATA_TYPE, DATA_NAME, &dataInfo,
  81                        U_COPYRIGHT_STRING, &errorCode);
  82
  83     if(currdir != NULL) {
  84         free(currdir);
  85     }
  86
  87
  88     if(U_FAILURE(errorCode)) {
  89         fprintf(stderr, "Error: unable to create data memory, error %d\n", errorCode);
  90         exit(errorCode);
  91     }
  92
  93     /* write the data to the file */
  94     /* a 16 bit value  and a String*/
  95     printf("Writing uint16_t value of %d\n", intValue);
  96     udata_write16(pData, intValue);
  97     printf("Writing string value of %s\n", stringValue);
  98     udata_writeString(pData, stringValue, sizeof(stringValue));
  99
 100     /* finish up */
 101     dataLength=udata_finish(pData, &errorCode);
 102     if(U_FAILURE(errorCode)) {
 103         fprintf(stderr, "Error: error %d writing the output file\n", errorCode);
 104         exit(errorCode);
 105     }
 106     size=sizeof(stringValue) + sizeof(intValue);
 107
 108
 109     if(dataLength!=(long)size) {
 110         fprintf(stderr, "Error: data length %ld != calculated size %lu\n", dataLength, size);
 111         exit(U_INTERNAL_PROGRAM_ERROR);
 112     }
 113     return 0;
 114 }
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