| 98 |
|
/* check if fseek() useful */ |
| 99 |
|
if (skip_len > skip_thresh && |
| 100 |
|
fseek(fp, (rmin*width + cmin)*elsiz, SEEK_CUR) == 0) { |
| 101 |
+ |
off_t curpos; |
| 102 |
|
buf = (char *)malloc(ncols*elsiz); |
| 103 |
|
if (!buf) |
| 104 |
|
goto memerr; |
| 105 |
+ |
#ifdef NON_POSIX |
| 106 |
|
for (y = nrows; y-- > 0; ) { |
| 107 |
|
if (getbinary(buf, elsiz, ncols, fp) != ncols) |
| 108 |
|
goto readerr; |
| 114 |
|
return(0); |
| 115 |
|
} |
| 116 |
|
} |
| 117 |
< |
free(buf); /* success! */ |
| 118 |
< |
return(1); |
| 117 |
> |
#else |
| 118 |
> |
curpos = ftello(fp); |
| 119 |
> |
for (y = nrows; y-- > 0; curpos += width*elsiz) { |
| 120 |
> |
if (pread(fileno(fp), buf, ncols*elsiz, |
| 121 |
> |
curpos) != ncols*elsiz) |
| 122 |
> |
goto readerr; |
| 123 |
> |
if (putbinary(buf, elsiz, ncols, stdout) != ncols) |
| 124 |
> |
goto writerr; |
| 125 |
> |
} |
| 126 |
> |
#endif |
| 127 |
> |
free(buf); |
| 128 |
> |
if (fflush(stdout) == EOF) |
| 129 |
> |
goto writerr; |
| 130 |
> |
return(1); /* success! */ |
| 131 |
|
} /* else need to read it all... */ |
| 132 |
|
buf = (char *)malloc(width*elsiz); |
| 133 |
|
if (!buf) |
