summaryrefslogtreecommitdiff
path: root/Build/source/libs/icu/icu-4.6/samples/date/date.c
blob: 1312a9ccb156ee70b6b54e4212a9d51a671d22c5 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
/*
**********************************************************************
*   Copyright (C) 1998-2008, International Business Machines
*   Corporation and others.  All Rights Reserved.
**********************************************************************
*
* File date.c
*
* Modification History:
*
*   Date        Name        Description
*   06/11/99    stephen     Creation.
*   06/16/99    stephen     Modified to use uprint.
*******************************************************************************
*/

#include <stdlib.h>
#include <stdio.h>
#include <string.h>

#include "unicode/utypes.h"
#include "unicode/ustring.h"
#include "unicode/uclean.h"

#include "unicode/ucnv.h"
#include "unicode/udat.h"
#include "unicode/ucal.h"

#include "uprint.h"

int main(int argc, char **argv);

#if UCONFIG_NO_FORMATTING

int main(int argc, char **argv)
{
  printf("%s: Sorry, UCONFIG_NO_FORMATTING was turned on (see uconfig.h). No formatting can be done. \n", argv[0]);
  return 0;
}
#else


/* Protos */
static void usage(void);
static void version(void);
static void date(const UChar *tz, UDateFormatStyle style, char *format, UErrorCode *status);


/* The version of date */
#define DATE_VERSION "1.0"

/* "GMT" */
static const UChar GMT_ID [] = { 0x0047, 0x004d, 0x0054, 0x0000 };


int
main(int argc,
     char **argv)
{
  int printUsage = 0;
  int printVersion = 0;
  int optind = 1;
  char *arg;
  const UChar *tz = 0;
  UDateFormatStyle style = UDAT_DEFAULT;
  UErrorCode status = U_ZERO_ERROR;
  char *format = NULL;


  /* parse the options */
  for(optind = 1; optind < argc; ++optind) {
    arg = argv[optind];
    
    /* version info */
    if(strcmp(arg, "-v") == 0 || strcmp(arg, "--version") == 0) {
      printVersion = 1;
    }
    /* usage info */
    else if(strcmp(arg, "-h") == 0 || strcmp(arg, "--help") == 0) {
      printUsage = 1;
    }
    /* display date in gmt */
    else if(strcmp(arg, "-u") == 0 || strcmp(arg, "--gmt") == 0) {
      tz = GMT_ID;
    }
    /* display date in gmt */
    else if(strcmp(arg, "-f") == 0 || strcmp(arg, "--full") == 0) {
      style = UDAT_FULL;
    }
    /* display date in long format */
    else if(strcmp(arg, "-l") == 0 || strcmp(arg, "--long") == 0) {
      style = UDAT_LONG;
    }
    /* display date in medium format */
    else if(strcmp(arg, "-m") == 0 || strcmp(arg, "--medium") == 0) {
      style = UDAT_MEDIUM;
    }
    /* display date in short format */
    else if(strcmp(arg, "-s") == 0 || strcmp(arg, "--short") == 0) {
      style = UDAT_SHORT;
    }
    else if(strcmp(arg, "-F") == 0 || strcmp(arg, "--format") == 0) {
      if ( optind + 1 < argc ) { 
         optind++;
         format = argv[optind];
      }
    }
    /* POSIX.1 says all arguments after -- are not options */
    else if(strcmp(arg, "--") == 0) {
      /* skip the -- */
      ++optind;
      break;
    }
    /* unrecognized option */
    else if(strncmp(arg, "-", strlen("-")) == 0) {
      printf("icudate: invalid option -- %s\n", arg+1);
      printUsage = 1;
    }
    /* done with options, display date */
    else {
      break;
    }
  }

  /* print usage info */
  if(printUsage) {
    usage();
    return 0;
  }

  /* print version info */
  if(printVersion) {
    version();
    return 0;
  }

  /* print the date */
  date(tz, style, format, &status);

  u_cleanup();
  return (U_FAILURE(status) ? 1 : 0);
}

/* Usage information */
static void
usage()
{  
  puts("Usage: icudate [OPTIONS]");
  puts("Options:");
  puts("  -h, --help        Print this message and exit.");
  puts("  -v, --version     Print the version number of date and exit.");
  puts("  -u, --gmt         Display the date in Greenwich Mean Time.");
  puts("  -f, --full        Use full display format.");
  puts("  -l, --long        Use long display format.");
  puts("  -m, --medium      Use medium display format.");
  puts("  -s, --short       Use short display format.");
}

/* Version information */
static void
version()
{
  UErrorCode status = U_ZERO_ERROR;
  const char *tzVer;
  int len = 256;
  UChar tzName[256];
  printf("icudate version %s, created by Stephen F. Booth.\n", 
	 DATE_VERSION);
  puts(U_COPYRIGHT_STRING);
  tzVer = ucal_getTZDataVersion(&status);
  if(U_FAILURE(status)) {  
      tzVer = u_errorName(status);  
  }
  printf("\n");
  printf("ICU Version:               %s\n", U_ICU_VERSION);
  printf("ICU Data (major+min):      %s\n", U_ICUDATA_NAME);
  printf("Default Locale:            %s\n", uloc_getDefault());
  printf("Time Zone Data Version:    %s\n", tzVer);
  printf("Default Time Zone:         ");
  status = U_ZERO_ERROR;
  u_init(&status);
  len = ucal_getDefaultTimeZone(tzName, len, &status);
  if(U_FAILURE(status)) {
    printf(" ** Error getting default zone: %s\n", u_errorName(status));
  }
  uprint(tzName, stdout, &status);
  printf("\n\n");
}

/* Format the date */
static void
date(const UChar *tz,
     UDateFormatStyle style,
     char *format,
     UErrorCode *status)
{
  UChar *s = 0;
  int32_t len = 0;
  UDateFormat *fmt;
  UChar uFormat[100];

  fmt = udat_open(style, style, 0, tz, -1,NULL,0, status);
  if ( format != NULL ) {
     u_charsToUChars(format,uFormat,strlen(format)),
     udat_applyPattern(fmt,FALSE,uFormat,strlen(format));
  }
  len = udat_format(fmt, ucal_getNow(), 0, len, 0, status);
  if(*status == U_BUFFER_OVERFLOW_ERROR) {
    *status = U_ZERO_ERROR;
    s = (UChar*) malloc(sizeof(UChar) * (len+1));
    if(s == 0) goto finish;
    udat_format(fmt, ucal_getNow(), s, len + 1, 0, status);
    if(U_FAILURE(*status)) goto finish;
  }

  /* print the date string */
  uprint(s, stdout, status);

  /* print a trailing newline */
  printf("\n");

 finish:
  udat_close(fmt);
  free(s);
}
#endif