git-commit-vandalism/t/helper/test-date.c
Johannes Schindelin efac8ac84b t0006 & t5000: skip "far in the future" test when time_t is too limited
Git's source code refers to timestamps as unsigned long, which is
ill-defined, as there is no guarantee about the number of bits that
data type has.

In preparation of switching to another data type that is large enough
to hold "far in the future" dates, we need to prepare the t0006-date.sh
script for the case where we *still* cannot format those dates if the
system library uses 32-bit time_t.

Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-04-20 22:07:15 -07:00

106 lines
2.3 KiB
C

#include "cache.h"
static const char *usage_msg = "\n"
" test-date relative [time_t]...\n"
" test-date show:<format> [time_t]...\n"
" test-date parse [date]...\n"
" test-date approxidate [date]...\n"
" test-date is64bit\n"
" test-date time_t-is64bit\n";
static void show_relative_dates(const char **argv, struct timeval *now)
{
struct strbuf buf = STRBUF_INIT;
for (; *argv; argv++) {
time_t t = atoi(*argv);
show_date_relative(t, 0, now, &buf);
printf("%s -> %s\n", *argv, buf.buf);
}
strbuf_release(&buf);
}
static void show_dates(const char **argv, const char *format)
{
struct date_mode mode;
parse_date_format(format, &mode);
for (; *argv; argv++) {
char *arg;
time_t t;
int tz;
/*
* Do not use our normal timestamp parsing here, as the point
* is to test the formatting code in isolation.
*/
t = strtol(*argv, &arg, 10);
while (*arg == ' ')
arg++;
tz = atoi(arg);
printf("%s -> %s\n", *argv, show_date(t, tz, &mode));
}
}
static void parse_dates(const char **argv, struct timeval *now)
{
struct strbuf result = STRBUF_INIT;
for (; *argv; argv++) {
unsigned long t;
int tz;
strbuf_reset(&result);
parse_date(*argv, &result);
if (sscanf(result.buf, "%lu %d", &t, &tz) == 2)
printf("%s -> %s\n",
*argv, show_date(t, tz, DATE_MODE(ISO8601)));
else
printf("%s -> bad\n", *argv);
}
strbuf_release(&result);
}
static void parse_approxidate(const char **argv, struct timeval *now)
{
for (; *argv; argv++) {
time_t t;
t = approxidate_relative(*argv, now);
printf("%s -> %s\n", *argv, show_date(t, 0, DATE_MODE(ISO8601)));
}
}
int cmd_main(int argc, const char **argv)
{
struct timeval now;
const char *x;
x = getenv("TEST_DATE_NOW");
if (x) {
now.tv_sec = atoi(x);
now.tv_usec = 0;
}
else
gettimeofday(&now, NULL);
argv++;
if (!*argv)
usage(usage_msg);
if (!strcmp(*argv, "relative"))
show_relative_dates(argv+1, &now);
else if (skip_prefix(*argv, "show:", &x))
show_dates(argv+1, x);
else if (!strcmp(*argv, "parse"))
parse_dates(argv+1, &now);
else if (!strcmp(*argv, "approxidate"))
parse_approxidate(argv+1, &now);
else if (!strcmp(*argv, "is64bit"))
return sizeof(unsigned long) == 8 ? 0 : 1;
else if (!strcmp(*argv, "time_t-is64bit"))
return sizeof(time_t) == 8 ? 0 : 1;
else
usage(usage_msg);
return 0;
}