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git/test-date.c
Jeff King c33ddc2e33 date: use strbufs in date-formatting functions
Many of the date functions write into fixed-size buffers.
This is a minor pain, as we have to take special
precautions, and frequently end up copying the result into a
strbuf or heap-allocated buffer anyway (for which we
sometimes use strcpy!).

Let's instead teach parse_date, datestamp, etc to write to a
strbuf. The obvious downside is that we might need to
perform a heap allocation where we otherwise would not need
to. However, it turns out that the only two new allocations
required are:

  1. In test-date.c, where we don't care about efficiency.

  2. In determine_author_info, which is not performance
     critical (and where the use of a strbuf will help later
     refactoring).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-08-27 10:32:56 -07:00

73 lines
1.5 KiB
C

#include "cache.h"
static const char *usage_msg = "\n"
" test-date show [time_t]...\n"
" test-date parse [date]...\n"
" test-date approxidate [date]...\n";
static void show_dates(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 parse_dates(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_ISO8601));
else
printf("%s -> bad\n", *argv);
}
strbuf_release(&result);
}
static void parse_approxidate(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_ISO8601));
}
}
int main(int argc, 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, "show"))
show_dates(argv+1, &now);
else if (!strcmp(*argv, "parse"))
parse_dates(argv+1, &now);
else if (!strcmp(*argv, "approxidate"))
parse_approxidate(argv+1, &now);
else
usage(usage_msg);
return 0;
}