zdump.c (46c599340f187db577b9212ab18022f3c7380c68) zdump.c (a979394afeb5c20fc58c5f5b005d51eb8f92f666)
1/* Dump time zone data in a textual format. */
2
3/*
4** This file is in the public domain, so clarified as of
5** 2009-05-17 by Arthur David Olson.
6*/
7
8#include "version.h"

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84 ? (((time_t) 1 << atime_shift) - 1 + ((time_t) 1 << atime_shift))
85 : -1);
86static size_t longest;
87static char const *progname;
88static bool warned;
89static bool errout;
90
91static char const *abbr(struct tm const *);
1/* Dump time zone data in a textual format. */
2
3/*
4** This file is in the public domain, so clarified as of
5** 2009-05-17 by Arthur David Olson.
6*/
7
8#include "version.h"

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84 ? (((time_t) 1 << atime_shift) - 1 + ((time_t) 1 << atime_shift))
85 : -1);
86static size_t longest;
87static char const *progname;
88static bool warned;
89static bool errout;
90
91static char const *abbr(struct tm const *);
92ATTRIBUTE_REPRODUCIBLE static intmax_t delta(struct tm *, struct tm *);
92static intmax_t delta(struct tm *, struct tm *);
93static void dumptime(struct tm const *);
94static time_t hunt(timezone_t, time_t, time_t, bool);
95static void show(timezone_t, char *, time_t, bool);
96static void showextrema(timezone_t, char *, time_t, struct tm *, time_t);
97static void showtrans(char const *, struct tm const *, time_t, char const *,
98 char const *);
99static const char *tformat(void);
93static void dumptime(struct tm const *);
94static time_t hunt(timezone_t, time_t, time_t, bool);
95static void show(timezone_t, char *, time_t, bool);
96static void showextrema(timezone_t, char *, time_t, struct tm *, time_t);
97static void showtrans(char const *, struct tm const *, time_t, char const *,
98 char const *);
99static const char *tformat(void);
100ATTRIBUTE_REPRODUCIBLE static time_t yeartot(intmax_t);
100ATTRIBUTE_PURE_114833 static time_t yeartot(intmax_t);
101
102/* Is C an ASCII digit? */
103static bool
104is_digit(char c)
105{
106 return '0' <= c && c <= '9';
107}
108

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129size_overflow(void)
130{
131 fprintf(stderr, _("%s: size overflow\n"), progname);
132 exit(EXIT_FAILURE);
133}
134
135/* Return A + B, exiting if the result would overflow either ptrdiff_t
136 or size_t. A and B are both nonnegative. */
101
102/* Is C an ASCII digit? */
103static bool
104is_digit(char c)
105{
106 return '0' <= c && c <= '9';
107}
108

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129size_overflow(void)
130{
131 fprintf(stderr, _("%s: size overflow\n"), progname);
132 exit(EXIT_FAILURE);
133}
134
135/* Return A + B, exiting if the result would overflow either ptrdiff_t
136 or size_t. A and B are both nonnegative. */
137ATTRIBUTE_REPRODUCIBLE static ptrdiff_t
137ATTRIBUTE_PURE_114833 static ptrdiff_t
138sumsize(ptrdiff_t a, ptrdiff_t b)
139{
140#ifdef ckd_add
141 ptrdiff_t sum;
142 if (!ckd_add(&sum, a, b) && sum <= INDEX_MAX)
143 return sum;
144#else
145 if (a <= INDEX_MAX && b <= INDEX_MAX - a)

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157 size_t len = strlen(str);
158 if (len < INDEX_MAX)
159 return len + 1;
160 size_overflow();
161}
162
163/* Return a pointer to a newly allocated buffer of size SIZE, exiting
164 on failure. SIZE should be positive. */
138sumsize(ptrdiff_t a, ptrdiff_t b)
139{
140#ifdef ckd_add
141 ptrdiff_t sum;
142 if (!ckd_add(&sum, a, b) && sum <= INDEX_MAX)
143 return sum;
144#else
145 if (a <= INDEX_MAX && b <= INDEX_MAX - a)

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157 size_t len = strlen(str);
158 if (len < INDEX_MAX)
159 return len + 1;
160 size_overflow();
161}
162
163/* Return a pointer to a newly allocated buffer of size SIZE, exiting
164 on failure. SIZE should be positive. */
165ATTRIBUTE_MALLOC static void *
165static void *
166xmalloc(ptrdiff_t size)
167{
168 void *p = malloc(size);
169 if (!p) {
170 fprintf(stderr, _("%s: Memory exhausted\n"), progname);
171 exit(EXIT_FAILURE);
172 }
173 return p;

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929}
930
931#if HAVE_SNPRINTF
932# define my_snprintf snprintf
933#else
934# include <stdarg.h>
935
936/* A substitute for snprintf that is good enough for zdump. */
166xmalloc(ptrdiff_t size)
167{
168 void *p = malloc(size);
169 if (!p) {
170 fprintf(stderr, _("%s: Memory exhausted\n"), progname);
171 exit(EXIT_FAILURE);
172 }
173 return p;

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929}
930
931#if HAVE_SNPRINTF
932# define my_snprintf snprintf
933#else
934# include <stdarg.h>
935
936/* A substitute for snprintf that is good enough for zdump. */
937ATTRIBUTE_FORMAT((printf, 3, 4)) static int
937static int
938my_snprintf(char *s, size_t size, char const *format, ...)
939{
940 int n;
941 va_list args;
942 char const *arg;
943 size_t arglen, slen;
944 char buf[1024];
945 va_start(args, format);

--- 324 unchanged lines hidden --- 		938my_snprintf(char *s, size_t size, char const *format, ...)
939{
940 int n;
941 va_list args;
942 char const *arg;
943 size_t arglen, slen;
944 char buf[1024];
945 va_start(args, format);

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