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#include <errno.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "cerr.h"
#define SGR_BOLD "\33[1m"
#define SGR_DONE "\33[0m"
static bool color;
static const char *progname;
void
cerrinit(const char *s)
{
const char *p = strrchr(s, '/');
progname = p ? p + 1 : s;
if (isatty(STDOUT_FILENO)) {
const char *ev = getenv("NO_COLOR");
if (!ev || !*ev)
color = true;
}
}
void
die(const char *fmt, ...)
{
va_list ap;
int e = errno;
va_start(ap, fmt);
fprintf(stderr, "%s%s:%s ", color ? SGR_BOLD : "", progname,
color ? SGR_DONE : "");
vfprintf(stderr, fmt, ap);
fprintf(stderr, ": %s\n", strerror(e));
va_end(ap);
exit(EXIT_FAILURE);
}
void
diex(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
fprintf(stderr, "%s%s:%s ", color ? SGR_BOLD : "", progname,
color ? SGR_DONE : "");
vfprintf(stderr, fmt, ap);
fputc('\n', stderr);
va_end(ap);
exit(EXIT_FAILURE);
}
void
die_with_off(const char *file, size_t off, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
fprintf(stderr, "%s%s:%s:%zu:%s ", color ? SGR_BOLD : "", progname, file,
off, color ? SGR_DONE : "");
vfprintf(stderr, fmt, ap);
fputc('\n', stderr);
va_end(ap);
exit(EXIT_FAILURE);
}
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