| 94 |
|
|
| 95 |
|
double pixvalue(); |
| 96 |
|
|
| 97 |
+ |
#ifdef NIX |
| 98 |
+ |
#define file_exists(f) (access(f,F_OK)==0) |
| 99 |
+ |
#else |
| 100 |
+ |
#include <sys/types.h> |
| 101 |
+ |
#include <sys/stat.h> |
| 102 |
+ |
int |
| 103 |
+ |
file_exists(fname) /* ordinary file exists? */ |
| 104 |
+ |
char *fname; |
| 105 |
+ |
{ |
| 106 |
+ |
struct stat sbuf; |
| 107 |
+ |
if (stat(fname, &sbuf) < 0) return(0); |
| 108 |
+ |
return((sbuf.st_mode & S_IFREG) != 0); |
| 109 |
+ |
} |
| 110 |
+ |
#endif |
| 111 |
|
|
| 112 |
+ |
|
| 113 |
|
quit(code) /* quit program */ |
| 114 |
|
int code; |
| 115 |
|
{ |
| 220 |
|
pctdone = 0.0; |
| 221 |
|
if (pout != NULL) { |
| 222 |
|
sprintf(fbuf, pout, seq); |
| 223 |
< |
if (prvr == NULL && access(fbuf, F_OK) == 0) |
| 223 |
> |
if (file_exists(fbuf)) { |
| 224 |
> |
if (prvr != NULL || !strcmp(fbuf, pout)) { |
| 225 |
> |
sprintf(errmsg, |
| 226 |
> |
"output file \"%s\" exists", |
| 227 |
> |
fbuf); |
| 228 |
> |
error(USER, errmsg); |
| 229 |
> |
} |
| 230 |
|
continue; /* don't clobber */ |
| 231 |
+ |
} |
| 232 |
|
if (freopen(fbuf, "w", stdout) == NULL) { |
| 233 |
|
sprintf(errmsg, |
| 234 |
|
"cannot open output file \"%s\"", fbuf); |
