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-rw-r--r--rio.c90
1 files changed, 0 insertions, 90 deletions
diff --git a/rio.c b/rio.c
deleted file mode 100644
index a36af2b..0000000
--- a/rio.c
+++ /dev/null
@@ -1,90 +0,0 @@
-#include <err.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <string.h>
-#include <sys/select.h>
-#include <unistd.h>
-
-#define MAXBUF 2048
-
-int
-main()
-{
- char bufin[MAXBUF], bufout[MAXBUF], *bi, *bo;
- fd_set rfds0, rfds1;
- int c, fdin, fdout, flags, i, nin, nout, state;
- struct timeval tv;
-
- if(!(fdin = open("/var/tmp/r.in", O_WRONLY)))
- err(1, "open");
- if(!(fdout = open("/var/tmp/r.out", O_RDONLY)))
- err(1, "open");
-
- dprintf(fdin, "export TERM=tty43 PAGER=cat EDITOR=ed\n");
-
- FD_ZERO(&rfds0);
- FD_ZERO(&rfds1);
-
- tv.tv_sec = 0;
- tv.tv_usec = 1;
-
- for(;;){
- /*
- * User input is read from standard in and copied the
- * input pipe. It is saved in bufin for later use.
- */
- FD_SET(0, &rfds0);
- if(select(0+1, &rfds0, NULL, NULL, &tv) > 0){
- nout = read(0, bufin, MAXBUF);
- bufin[nout] = 0;
- dprintf(fdin, "%s", bufin);
- fflush(stdout);
- }
-
- /*
- * System output is read from the output pipe and copied
- * to standard out for the user to see.
- */
- FD_SET(fdout, &rfds1);
- if(select(fdout+1, &rfds1, NULL, NULL, &tv) > 0){
- nout = read(fdout, bufout, MAXBUF);
- if(!nout) continue;
- bufout[nout] = 0;
-
- /*
- * Bufin and bufout are copied to the temporary
- * pointers bi and bo. Bo is incremented in order
- * to skip any potential repetition of the command
- * given by the user on standard in. (It is assumed
- * that the typed command fits in bufin, i.e. is
- * not larger than MAXBUF.)
- */
- bi = bufin;
- bo = bufout;
- for(;;){
- if(*bo == '\n'){
- bo++;
- break;
- }
- if(*bo == 13){
- bo++;
- continue;
- }
- if(*bi != *bo){
- bo = bufout;
- break;
- }
- bi++; bo++;
- }
-
- /*
- * Bo is printed and bufin is cleared, so as not
- * to perform the skip again, incorrectly.
- */
- printf("%s", bo);
- fflush(stdout);
- bufin[0] = 0;
- }
- }
-
-}