ICU-461.12.tar.gz

[apple/icu.git] / icuSources / tools / tzcode / zdump.c

diff --git a/icuSources/tools/tzcode/zdump.c b/icuSources/tools/tzcode/zdump.c
index c7199acb8725cc2a08d33c11acae1f2826186f85..b27480dd8894568f6c5a951edd245cab2d75641d 100644 (file)
--- a/icuSources/tools/tzcode/zdump.c
+++ b/icuSources/tools/tzcode/zdump.c
@@ -1,4 +1,4 @@
-static char    elsieid[] = "@(#)zdump.c        8.3";
+static char    elsieid[] = "@(#)zdump.c        8.8";
 
 /*
 ** This code has been made independent of the rest of the time
@@ -104,6 +104,9 @@ static char elsieid[] = "@(#)zdump.c        8.3";
 #define SECSPERNYEAR   (SECSPERDAY * DAYSPERNYEAR)
 #define SECSPERLYEAR   (SECSPERNYEAR + SECSPERDAY)
 
+#ifndef HAVE_GETTEXT
+#define HAVE_GETTEXT 0
+#endif
 #if HAVE_GETTEXT
 #include "locale.h"    /* for setlocale */
 #include "libintl.h"
@@ -145,13 +148,9 @@ static char        elsieid[] = "@(#)zdump.c        8.3";
 #define TZ_DOMAIN "tz"
 #endif /* !defined TZ_DOMAIN */
 
-#ifndef P
-#define P(x)   x
-#endif /* !defined P */
-
 extern char ** environ;
-extern int     getopt P((int argc, char * const argv[],
-                       const char * options));
+extern int     getopt(int argc, char * const argv[],
+                       const char * options);
 extern char *  optarg;
 extern int     optind;
 extern char *  tzname[2];
@@ -162,26 +161,26 @@ static size_t     longest;
 static char *  progname;
 static int     warned;
 
-static char *  abbr P((struct tm * tmp));
-static void    abbrok P((const char * abbrp, const char * zone));
-static long    delta P((struct tm * newp, struct tm * oldp));
-static void    dumptime P((const struct tm * tmp));
-static time_t  hunt P((char * name, time_t lot, time_t hit));
-static void    setabsolutes P((void));
-static void    show P((char * zone, time_t t, int v));
-static const char *    tformat P((void));
-static time_t  yeartot P((long y));
+static char *  abbr(struct tm * tmp);
+static void    abbrok(const char * abbrp, const char * zone);
+static long    delta(struct tm * newp, struct tm * oldp);
+static void    dumptime(const struct tm * tmp);
+static time_t  hunt(char * name, time_t lot, time_t    hit);
+static void    setabsolutes(void);
+static void    show(char * zone, time_t t, int v);
+static const char *    tformat(void);
+static time_t  yeartot(long y);
 #ifdef ICU
 typedef struct listentry {
        char *          name;
        struct listentry *      next;
 } listentry;
 
-static time_t  huntICU P((char * name, time_t lot, time_t      hit, FILE *fp));
-static void    dumptimeICU P((FILE * fp, time_t t));
-static void    showICU P((FILE * fp, char * zone, time_t t1, time_t t2));
-static int     getall P((struct listentry ** namelist));
-static void getzones P((char * basedir, char * subdir, struct listentry ** last, int * count));
+static time_t  huntICU(char * name, time_t lot, time_t hit, FILE *fp);
+static void    dumptimeICU(FILE * fp, time_t t);
+static void    showICU(FILE * fp, char * zone, time_t t1, time_t t2);
+static int     getall(struct listentry ** namelist);
+static void getzones(char * basedir, char * subdir, struct listentry ** last, int * count);
 #endif
 
 #ifndef TYPECHECK
@@ -259,6 +258,17 @@ const char * const zone;
        warned = TRUE;
 }
 
+static void
+usage(const char *progname, FILE *stream, int status)
+{
+       (void) fprintf(stream,
+_("%s: usage is %s [ --version ] [ --help ] [ -v ] [ -c [loyear,]hiyear ] zonename ...\n\
+\n\
+Report bugs to tz@elsie.nci.nih.gov.\n"),
+                      progname, progname);
+       exit(status);
+}
+
 int
 main(argc, argv)
 int    argc;
@@ -303,6 +313,8 @@ char *      argv[];
                if (strcmp(argv[i], "--version") == 0) {
                        (void) printf("%s\n", elsieid);
                        exit(EXIT_SUCCESS);
+               } else if (strcmp(argv[i], "--help") == 0) {
+                       usage(progname, stdout, EXIT_SUCCESS);
                }
        vflag = 0;
        cutarg = NULL;
@@ -359,10 +371,7 @@ char *     argv[];
                else    cutarg = optarg;
        if ((c != EOF && c != -1) ||
                (optind == argc - 1 && strcmp(argv[optind], "=") == 0)) {
-                       (void) fprintf(stderr,
-_("%s: usage is %s [ --version ] [ -v ] [ -c [loyear,]hiyear ] zonename ...\n"),
-                               progname, progname);
-                       exit(EXIT_FAILURE);
+                       usage(progname, stderr, EXIT_FAILURE);
        }
 #endif
        if (vflag) {
@@ -498,13 +507,9 @@ _("%s: usage is %s [ --version ] [ -v ] [ -c [loyear,]hiyear ] zonename ...\n"),
                        (void) strncpy(buf, abbr(&tm), (sizeof buf) - 1);
                }
                for ( ; ; ) {
-                       if (t >= cuthitime)
+                       if (t >= cuthitime || t >= cuthitime - SECSPERHOUR * 12)
                                break;
                        newt = t + SECSPERHOUR * 12;
-                       if (newt >= cuthitime)
-                               break;
-                       if (newt <= t)
-                               break;
                        newtmp = localtime(&newt);
                        if (newtmp != NULL)
                                newtm = *newtmp;
@@ -588,7 +593,7 @@ _("%s: usage is %s [ --version ] [ -v ] [ -c [loyear,]hiyear ] zonename ...\n"),
 }
 
 static void
-setabsolutes()
+setabsolutes(void)
 {
        if (0.5 == (time_t) 0.5) {
                /*
@@ -617,7 +622,7 @@ _("%s: use of -v on system with floating time_t other than float or double\n"),
                        t = t1;
                        t1 = 2 * t1 + 1;
                }
-                 
+
                absolute_max_time = t;
                t = -t;
                absolute_min_time = t - 1;
@@ -786,7 +791,7 @@ struct tm * tmp;
 */
 
 static const char *
-tformat()
+tformat(void)
 {
        if (0.5 == (time_t) 0.5) {      /* floating */
                if (sizeof (time_t) > sizeof (double))