]>
git.saurik.com Git - apple/icu.git/blob - icuSources/samples/ufortune/ufortune.c
c1c203a983defd512ff7545a67cdcb3e9eea72a4
1 /*************************************************************************
3 * © 2016 and later: Unicode, Inc. and others.
4 * License & terms of use: http://www.unicode.org/copyright.html#License
6 **************************************************************************
7 **************************************************************************
9 * Copyright (C) 2001-2006, International Business Machines
10 * Corporation and others. All Rights Reserved.
12 **************************************************************************
14 * ufortune - An ICU resources sample program
17 * Defining resources for use by an application
18 * Compiling and packaging them into a dll
19 * Referencing the resource-containing dll from application code
20 * Loading resource data using ICU's API
22 * Created Nov. 7, 2001 by Andy Heninger
24 * ufortune is a variant of the Unix "fortune" command, with
25 * ICU resources that contain the fortune-cookie sayings.
26 * Using resources allows fortunes in different languages to
27 * be selected based on locale.
35 #include "unicode/udata.h" /* ICU API for data handling. */
36 #include "unicode/ures.h" /* ICU API for resource loading */
37 #include "unicode/ustdio.h" /* ICU API for reading & writing Unicode data */
38 /* to files, possibly including character */
39 /* set conversions. */
40 #include "unicode/ustring.h"
42 #ifndef UFORTUNE_NOSETAPPDATA
44 * Resource Data Reference. The data is packaged as a dll (or .so or
45 * whatever, depending on the platform) that exports a data
46 * symbol. The application (that's us) references that symbol,
47 * here, and will pass the data address to ICU, which will then
48 * be able to fetch resources from the data.
50 extern const void U_IMPORT
*fortune_resources_dat
;
53 void u_write(const UChar
*what
, int len
);
57 * main() This one function is all of the application code.
59 int main(int argc
, char **argv
)
61 UBool displayUsage
= FALSE
; /* Set true if command line err or help */
62 /* option was requested. */
63 UBool verbose
= FALSE
; /* Set true if -v command line option. */
64 char *optionError
= NULL
; /* If command line contains an unrecognized */
65 /* option, this will point to it. */
66 char *locale
=NULL
; /* Locale name. Null for system default, */
67 /* otherwise set from command line. */
68 const char * programName
= argv
[0]; /* Program invocation name. */
71 UFILE
*u_stdout
; /* Unicode stdout file. */
72 UErrorCode err
= U_ZERO_ERROR
; /* Error return, used for most ICU */
75 UResourceBundle
*myResources
; /* ICU Resource "handles" */
76 UResourceBundle
*fortunes_r
;
78 int32_t numFortunes
; /* Number of fortune strings available. */
81 const UChar
*resString
; /* Points to strings fetched from Resources. */
85 /* Process command line options.
86 * -l locale specify a locale
87 * -v verbose mode. Display extra messages.
88 * -? or --help display a usage line
90 for (i
=1; i
<argc
; i
++) {
91 if (strcmp(argv
[i
], "-l") ==0) {
97 if (strcmp(argv
[i
], "-v") == 0) {
100 if (strcmp(argv
[i
], "-?") == 0 ||
101 strcmp(argv
[i
], "--help") == 0) {
104 optionError
= argv
[i
];
109 /* ICU's icuio package provides a convenient way to write Unicode
110 * data to stdout. The string data that we get from resources
111 * will be UChar * strings, which icuio can handle nicely.
113 u_stdout
= u_finit(stdout
, NULL
/*locale*/, NULL
/*codepage */);
115 u_fprintf(u_stdout
, "%s: checking output via icuio.\n", programName
);
118 #ifndef UFORTUNE_NOSETAPPDATA
119 /* Tell ICU where our resource data is located in memory.
120 * The data lives in the Fortune_Resources dll, and we just
121 * pass the address of an exported symbol from that library
124 udata_setAppData("fortune_resources", &fortune_resources_dat
, &err
);
125 if (U_FAILURE(err
)) {
126 fprintf(stderr
, "%s: udata_setAppData failed with error \"%s\"\n", programName
, u_errorName(err
));
131 /* Open our resources.
133 myResources
= ures_open("fortune_resources", locale
, &err
);
134 if (U_FAILURE(err
)) {
135 fprintf(stderr
, "%s: ures_open failed with error \"%s\"\n", programName
, u_errorName(err
));
139 u_fprintf(u_stdout
, "status from ures_open(\"fortune_resources\", %s) is %s\n",
140 locale
? locale
: " ", u_errorName(err
));
144 * Display any command line option usage errors and/or the
145 * usage help message. These messages come from our resource bundle.
147 if (optionError
!= NULL
) {
148 const UChar
*msg
= ures_getStringByKey(myResources
, "optionMessage", &len
, &err
);
149 if (U_FAILURE(err
)) {
150 fprintf(stderr
, "%s: ures_getStringByKey(\"optionMessage\") failed, %s\n",
151 programName
, u_errorName(err
));
154 u_file_write(msg
, len
, u_stdout
); /* msg is UChar *, from resource */
155 u_fprintf(u_stdout
, " %s\n", optionError
); /* optionError is char *, from argv */
162 usage
= ures_getStringByKey(myResources
, "usage", &len
, &err
);
163 if (U_FAILURE(err
)) {
164 fprintf(stderr
, "%s: ures_getStringByKey(\"usage\") failed, %s\n", programName
, u_errorName(err
));
167 u_file_write(usage
, len
, u_stdout
);
168 if (optionError
!= NULL
) {returnValue
= -1;}
173 * Open the "fortunes" resources from within the already open resources
175 fortunes_r
= ures_getByKey(myResources
, "fortunes", NULL
, &err
);
176 if (U_FAILURE(err
)) {
177 fprintf(stderr
, "%s: ures_getByKey(\"fortunes\") failed, %s\n", programName
, u_errorName(err
));
183 * Pick up and display a random fortune
186 numFortunes
= ures_countArrayItems(myResources
, "fortunes", &err
);
187 if (U_FAILURE(err
)) {
188 fprintf(stderr
, "%s: ures_countArrayItems(\"fortunes\") failed, %s\n", programName
, u_errorName(err
));
191 if (numFortunes
<= 0) {
192 fprintf(stderr
, "%s: no fortunes found.\n", programName
);
196 i
= (int)time(NULL
) % numFortunes
; /* Use time to pick a somewhat-random fortune. */
197 resString
= ures_getStringByIndex(fortunes_r
, i
, &len
, &err
);
198 if (U_FAILURE(err
)) {
199 fprintf(stderr
, "%s: ures_getStringByIndex(%d) failed, %s\n", programName
, i
, u_errorName(err
));
203 u_file_write(resString
, len
, u_stdout
); /* Write out the message */
204 u_fputc(0x0a, u_stdout
); /* and a trailing newline */