-
/*
- * getans.c -- get an answer from the user and return a string array
- *
- * $Id$
- *
- * This code is Copyright (c) 2002, by the authors of nmh. See the
- * COPYRIGHT file in the root directory of the nmh distribution for
- * complete copyright information.
- */
+** getans.c -- get an answer from the user and return a string array
+**
+** This code is Copyright (c) 2002, by the authors of nmh. See the
+** COPYRIGHT file in the root directory of the nmh distribution for
+** complete copyright information.
+*/
#include <h/mh.h>
#include <h/signals.h>
#include <setjmp.h>
#include <signal.h>
+#include <unistd.h>
static char ansbuf[BUFSIZ];
static jmp_buf sigenv;
/*
- * static prototypes
- */
-static RETSIGTYPE intrser (int);
+** static prototypes
+*/
+static void intrser(int);
char **
-getans (char *prompt, struct swit *ansp)
+getans(char *prompt, struct swit *ansp)
{
- int i;
- SIGNAL_HANDLER istat = NULL;
- char *cp, **cpp;
-
- if (!(setjmp (sigenv))) {
- istat = SIGNAL (SIGINT, intrser);
- } else {
- SIGNAL (SIGINT, istat);
- return NULL;
- }
+ int i;
+ SIGNAL_HANDLER istat = NULL;
+ char *cp, **cpp;
- for (;;) {
- printf ("%s", prompt);
- fflush (stdout);
- cp = ansbuf;
- while ((i = getchar ()) != '\n') {
- if (i == EOF)
- longjmp (sigenv, 1);
- if (cp < &ansbuf[sizeof ansbuf - 1])
- *cp++ = i;
+ if (!(setjmp(sigenv))) {
+ istat = SIGNAL(SIGINT, intrser);
+ } else {
+ SIGNAL(SIGINT, istat);
+ return NULL;
}
- *cp = '\0';
- if (ansbuf[0] == '?' || cp == ansbuf) {
- printf ("Options are:\n");
- print_sw (ALL, ansp, "");
- continue;
- }
- cpp = brkstring (ansbuf, " ", NULL);
- switch (smatch (*cpp, ansp)) {
- case AMBIGSW:
- ambigsw (*cpp, ansp);
- continue;
- case UNKWNSW:
- printf (" -%s unknown. Hit <CR> for help.\n", *cpp);
- continue;
- default:
- SIGNAL (SIGINT, istat);
- return cpp;
+
+ for (;;) {
+ printf("%s", prompt);
+ fflush(stdout);
+ cp = ansbuf;
+ while ((i = getchar()) != '\n') {
+ if (i == EOF)
+ longjmp(sigenv, 1);
+ if (cp < &ansbuf[sizeof ansbuf - 1])
+ *cp++ = i;
+ }
+ *cp = '\0';
+ if (ansbuf[0] == '?' || cp == ansbuf) {
+ printf("Options are:\n");
+ print_sw(ALL, ansp, "", stdout);
+ continue;
+ }
+ cpp = brkstring(ansbuf, " ", NULL);
+ switch (smatch(*cpp, ansp)) {
+ case AMBIGSW:
+ ambigsw(*cpp, ansp);
+ continue;
+ case UNKWNSW:
+ printf(" -%s unknown. Hit <CR> for help.\n", *cpp);
+ continue;
+ default:
+ SIGNAL(SIGINT, istat);
+ return cpp;
+ }
}
- }
}
-static RETSIGTYPE
-intrser (int i)
+static void
+intrser(int i)
{
- /*
- * should this be siglongjmp?
- */
- longjmp (sigenv, 1);
+ /*
+ ** should this be siglongjmp?
+ */
+ close(STDIN_FILENO);
}