test-codeset.c

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

#include <i18n.h>
#include <langinfo.h>
#include <libintl.h>

/* return whether byte strings are equal or not.
 * NULL strings are never equal
 */
static int my_streq(const char *va, const char *vb) {
        const char *a = va;
        const char *b = vb;
        int i;
        if ((NULL == a) || (NULL == b)) {
                return 0;
        }
        for (i=0; a[i] != '\0' && b[i] != '\0'; i++) {
                if (a[i] != b[i]) {
                        return 0;
                }
        }
        return 1;
}

#if defined(CODESET_UTF_8)
#define MY_CODESET "UTF-8"
#elif defined(CODESET_LATIN1)
#define MY_CODESET "iso-8859-1"
#elif defined(CODESET_DEFAULT)
#define MY_CODESET "default"
#define bind_textdomain_codeset(domain,codeset) \
        MY_CODESET
#else
#error Define one of the CODESET_* macros!
#endif

typedef struct {
        char *locale;
        char *orig;
        char *latin1;
        char *utf8;
} TestCase;

const TestCase testcases[] = {
        { "de_DE", 
          N_("High saturation"), 
          /* &auml; latin1   oct 333     hex e4    dec 228     */
          "Hohe S\344ttigung", 
          /* &auml; utf-8    oct 303 244 hex c3 a4 dec 195 164 */
          "Hohe S\303\244ttigung" },
        { "fr_FR",
          N_("Not defined"),
          /* &eacute; latin1 oct 351     hex e9    dec 233     */
          "Non d\233fini",
          /* &eacute; utf-8  oct 303 251 hex c3    dec 195     */
          "Non d\303\251fini"
        },
        { "es_ES",
          N_("High saturation"),
          /* &oacute; latin1 oct hex       dec 243 */
          "Alta saturaci\363n",
          /* &oacute; utf-8  oct hex c3 b3 dec */
          "Alta saturaci\303\263n"
        },
        { NULL, NULL, NULL, NULL }
};


static int check(const int i)
{
        const char *oldtextdomain = textdomain(NULL);
        const char *newtextdomain = textdomain(GETTEXT_PACKAGE);
                
        const char *newcodeset = MY_CODESET;
        const char *oldcodeset = bind_textdomain_codeset(GETTEXT_PACKAGE, NULL);
        const char *realcodeset = bind_textdomain_codeset(GETTEXT_PACKAGE, MY_CODESET);
                
        const char *orig   = testcases[i].orig;
        const char *transl = gettext(testcases[i].orig);
        const char *latin1 = testcases[i].latin1;
        const char *utf8   = testcases[i].utf8;
                        
        printf( 
                "Old textdomain:  %s\n"
                "New textdomain:  %s\n",
                oldtextdomain,
                newtextdomain
                );
        
        if (NULL != oldcodeset) {
                printf(
                       "Old codeset:     \"%s\" (locale default)\n",
                       nl_langinfo(CODESET)
                       );
        } else {
                printf(
                       "Old codeset:     \"%s\"\n",
                       oldcodeset
                       );
        }
        
        printf(
               "Wanted codeset:  %s\n"
               "Real codeset:    %s\n",
               newcodeset,
               realcodeset
               );

        printf(
               "Original:   %s\n"
               "Translated: %s\n"
               "iso-8859-1: %s\n"
               "utf-8:      %s\n",
               orig,
               transl,
               latin1,
               utf8
               );

#if defined(CODESET_UTF_8)
        return (my_streq(transl, utf8));
#elif defined(CODESET_LATIN_1)
        return (my_streq(transl, latin1));
#else
        /* make sure my_streq is used once */
        return (my_streq(orig, orig));
#endif
}


static int checks()
{
        int i;
                
        const char *localeenv = getenv("LOCALEDIR");
        const char *localedir = (localeenv!=NULL)?localeenv:LOCALEDIR;
        const char *msgcatdir = bindtextdomain(GETTEXT_PACKAGE, localedir);
        
        /* set locale to env settings */
        const char *oldlocale = setlocale(LC_ALL, NULL);
        const char *newlocale = setlocale(LC_ALL, "");

        if (localeenv != NULL) {
                printf("Msg catalog dir: %s (from environment variable LOCALEDIR\n",
                       msgcatdir);
        } else {
                printf("Msg catalog dir: %s\n", msgcatdir);
        }

        if (newlocale == NULL) {
                printf("Locale not available: \"%s\"\n", newlocale);
                printf("Aborting without error.\n");
                return 1;
        }


        printf( 
                "Old locale:      %s\n"
                "New locale:      %s\n",
                oldlocale,
                newlocale
                );

        for (i=0; testcases[i].locale != NULL; i++) {
                const int localelen = strlen(testcases[i].locale);
                if (strncmp(newlocale, testcases[i].locale, localelen) == 0) {
                        return check(i);
                }
        }

        printf("No test case found for locale: %s\n", newlocale);
        return 1;
}


int main(int argc, char *argv[])
{
        if (argc > 1) {
                if ((argc == 2) && (strcmp("--list", argv[1]) == 0)) {
                        int i;
                        for (i=0; testcases[i].locale != NULL; i++) {
                                printf("%s\n", testcases[i].locale);
                        }
                        return 0;
                } else {
                        int i;
                        fprintf(stderr, "Illegal command line. Aborting.\n");
                        fprintf(stderr, "argc: %03d\n", argc);
                        for (i=0; i<argc; i++) {
                                fprintf(stderr, "%03d \"%s\"\n", i, argv[i]);
                        }
                        return 1;
                }
        } else {
                int ret = checks();
                printf("Test result: %s\n", (ret)?"success":"failure");
                return (ret)?0:1;
        }
        return -1;
}

/*
 * Local Variables:
 * mode:c
 * c-basic-offset: 8
 * End:
 */

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