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#include <errno.h>
#include <stdarg.h>
#include <stddef.h>
#include <stdlib.h>
#include <errors.h>
#include <pcre2.h>
#include "exitcodes.h"
#include "globals.h"
void
pcre2_bitch_and_die(int ec, const char *fmt, ...)
{
/* If we’ve gotten here, we don’t care about writing efficient code */
ptrdiff_t bufsz = 512;
for (;;) {
char *buf = malloc(bufsz);
if (buf == nullptr)
cerr(EXIT_FATAL, "malloc:");
if (pcre2_get_error_message(ec, buf, bufsz) == PCRE2_ERROR_NOMEMORY) {
free(buf);
bufsz *= 2;
} else {
va_list ap;
va_start(ap, fmt);
vwarn(fmt, ap);
exit(EXIT_FATAL);
}
}
}
int
getenv_posnum(const char *ev, int fallback)
{
const char *s = getenv(ev);
if (s != nullptr && *s != 0) {
const char *endptr;
errno = 0;
long n = strtol(s, (char **)&endptr, 10);
if (errno != 0)
warn("strtol: %s:", s);
else if (*endptr != 0 || n <= 0)
warn("invalid value %s%s%s for %s", lquot, s, rquot, ev);
else
return (int)n;
}
return fallback;
}
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