mirror of
https://github.com/GnoConsortium/gno.git
synced 2024-10-03 20:55:15 +00:00
49 lines
1019 B
C
49 lines
1019 B
C
/*
|
|
* This test attaches a FILE stream to each of the descriptors STDIN_FILENO
|
|
* and STDOUT_FILENO, then reads from the former and writes to the latter
|
|
* in binary mode until EOF is reached.
|
|
*
|
|
* Devin Reade, 1997.
|
|
*
|
|
* $Id: fdopen2.c,v 1.2 1997/09/21 16:36:18 gdr Exp $
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
|
|
#define BUFFERSIZE 1024
|
|
|
|
char buffer[BUFFERSIZE];
|
|
|
|
int
|
|
main(int argc, char **argv) {
|
|
FILE *fp1, *fp2;
|
|
int fd1 = STDIN_FILENO;
|
|
int fd2 = STDOUT_FILENO;
|
|
|
|
fprintf(stderr,"starting\n");
|
|
if ((fp1 = fdopen(fd1, "rb")) == NULL) {
|
|
perror("failed to do fdopen on stdin");
|
|
exit(1);
|
|
}
|
|
if ((fp2 = fdopen(fd2, "wb")) == NULL) {
|
|
perror("failed to do fdopen on stdout");
|
|
exit(1);
|
|
}
|
|
while (fgets(buffer, BUFFERSIZE, fp1) != NULL) {
|
|
if (fputs(buffer, fp2) == EOF) {
|
|
perror("fputs failed for stdout");
|
|
exit(1);
|
|
}
|
|
}
|
|
if (ferror(fp1)) {
|
|
perror("error while reading from stdin");
|
|
exit(1);
|
|
}
|
|
fclose(fp1);
|
|
fclose(fp2);
|
|
fprintf(stderr,"done\n");
|
|
return 0;
|
|
}
|