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#define _XOPEN_SOURCE /* tell sun we want popen, etc */
#include "libc.h"
#include "types.h"
#include "misc.h"
#include "args.h"
#ifndef __lint
static const char rcsid[] =
"$Id: misc.c,v 1.2 2000/06/05 22:48:19 florea Exp $";
#endif
/* fatal ---------------------------------------------- print message and die */
void fatal(const char *msg)
{
fflush(stdout);
fatalf("%s", msg);
exit(1);
}
/* fatalf --------------------------------- format message, print it, and die */
static void print_argv0(void)
{
if (argv0) {
char *p = strrchr(argv0, '/');
(void)fprintf(stderr, "%s: ", p ? p+1 : argv0);
}
}
void fatalf(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
fflush(stdout);
print_argv0();
(void)vfprintf(stderr, fmt, ap);
(void)fputc('\n', stderr);
va_end(ap);
exit(1);
}
void fatalfr(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
fflush(stdout);
print_argv0();
(void)vfprintf(stderr, fmt, ap);
(void)fprintf(stderr, ": %s\n", strerror(errno));
va_end(ap);
exit(1);
}
int psublast_debug = 0;
void debugf(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
if (psublast_debug) {
fflush(stdout);
print_argv0();
if (vfprintf(stderr, fmt, ap) < 0)
exit(1);
}
va_end(ap);
}
void debugff(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
if (psublast_debug) {
fflush(stdout);
print_argv0();
if (vfprintf(stderr, fmt, ap) < 0)
exit(1);
if (fflush(stderr) != 0)
exit(1);
}
va_end(ap);
}
/* ckopen -------------------------------------- open file; check for success */
FILE *ckopen(const char *name, const char *mode)
{
FILE *fp;
if ((fp = fopen(name, mode)) == NULL)
fatalfr("Cannot open %s.", name);
return fp;
}
/* ckalloc -------------------------------- allocate space; check for success */
void *ckalloc(size_t amount)
{
void *p;
assert((long)amount >= 0);
if (amount == 0)
amount = 1; /* ANSI portability hack */
if ((p = malloc(amount)) == NULL)
fatalf("Ran out of memory trying to allocate %lu.",
(unsigned long)amount);
#if 0
memset(p, 0, amount); /* XXX */
#endif
return p;
}
/* ckallocz -------------------- allocate space; zero fill; check for success */
void *ckallocz(size_t amount)
{
void *p = ckalloc(amount);
memset(p, 0, amount);
return p;
}
void *ckfree(void *p)
{
free(p);
return 0;
}
/* strsame --------------------------- tell whether two strings are identical */
bool same_string(const char *s, const char *t)
{
return (strcmp(s, t) == 0);
}
/* strsave -------------------------- save string s somewhere; return address */
char *copy_string(const char *s)
{
char *p;
p = ckalloc(strlen(s)+1); /* +1 to hold '\0' */
return strcpy(p, s);
}
char *copy_substring(const char *s, int n)
{
char *p = ckalloc((size_t)n+1); /* +1 to hold '\0' */
memcpy(p, s, (size_t)n);
p[n] = 0;
return p;
}
long ckftell(FILE *f)
{
long r = ftell(f);
if (r < 0)
fatalfr("bad ftell: %s");
return r;
}
int ckfseek(FILE *f, long i, int m)
{
int r = fseek(f, i, m);
if (r < 0)
fatalfr("bad fseek: %s");
return r;
}
void *ckrealloc(void * p, size_t size)
{
p = p ? realloc(p, size) : malloc(size);
if (!p)
fatal("ckrealloc failed");
return p;
}
FILE *ckpopen(const char *name, const char *mode)
{
FILE *fp;
if ((fp = popen(name, mode)) == NULL)
fatalfr("Cannot open %s.", name);
return fp;
}
void ckpclose(FILE *fp)
{
int r = pclose(fp);
if (r != 0)
fatalfr("pclose failed (status %d)", r);
}
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