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/*
* Generate an fragment to be inserted at the bottom of HTML pages.
* The timestamp follows RFC 3339.
* We use UTC.
*/
#include <stdio.h>
#include <time.h>
#include <string.h>
#include <errno.h>
#include <limits.h>
#include <stdlib.h>
#include "dawk.h"
int main(int argc, char **argv)
{
time_t now;
char buf[64];
char const *version = "unknown";
char *source_date_epoch;
unsigned long long epoch;
char *endptr;
source_date_epoch = getenv("SOURCE_DATE_EPOCH");
if (source_date_epoch) {
errno = 0;
epoch = strtoull(source_date_epoch, &endptr, 10);
if ((errno == ERANGE && (epoch == ULLONG_MAX || epoch == 0))
|| (errno != 0 && epoch == 0)) {
fprintf(stderr, "Environment variable $SOURCE_DATE_EPOCH: strtoull: %s\n", strerror(errno));
exit(EXIT_FAILURE);
}
if (endptr == source_date_epoch) {
fprintf(stderr, "Environment variable $SOURCE_DATE_EPOCH: No digits were found: %s\n", endptr);
exit(EXIT_FAILURE);
}
if (*endptr != '\0') {
fprintf(stderr, "Environment variable $SOURCE_DATE_EPOCH: Trailing garbage: %s\n", endptr);
exit(EXIT_FAILURE);
}
if (epoch > ULONG_MAX) {
fprintf(stderr, "Environment variable $SOURCE_DATE_EPOCH: value must be smaller than or equal to %lu but was found to be: %llu \n", ULONG_MAX, epoch);
exit(EXIT_FAILURE);
}
now = epoch;
} else {
now = time(NULL);
}
strftime(buf, sizeof(buf), "%Y-%m-%d %H:%M:%S UTC", gmtime(&now));
if (argc > 1) {
dstr line;
d_open_input(argv[1]);
while (d_getline(line)) {
if (d_match(line, "#define ALLEGRO_VERSION_STR *\"([^\"]*)\"")) {
version = d_submatch(1);
break;
}
}
d_close_input();
}
printf("<p class=\"timestamp\">\n");
printf("Allegro version %s\n", version);
printf(" - Last updated: %s\n", buf);
printf("</p>\n");
return 0;
}
/* vim: set sts=3 sw=3 et: */
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