-
/*
* gans.c -- get an answer from the user
*
- * $Id$
- *
* 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.
int
gans (char *prompt, struct swit *ansp)
{
- register int i;
- register char *cp;
- register struct swit *ap;
- char ansbuf[BUFSIZ];
+ register int i;
+ register char *cp;
+ register struct swit *ap;
+ char ansbuf[BUFSIZ];
- for (;;) {
- printf ("%s", prompt);
- fflush (stdout);
- cp = ansbuf;
- while ((i = getchar ()) != '\n') {
- if (i == EOF)
- return 0;
- if (cp < &ansbuf[sizeof ansbuf - 1]) {
+ for (;;) {
+ printf ("%s", prompt);
+ fflush (stdout);
+ cp = ansbuf;
+ while ((i = getchar ()) != '\n') {
+ if (i == EOF)
+ return 0;
+ if (cp < &ansbuf[sizeof ansbuf - 1]) {
#ifdef LOCALE
- i = (isalpha(i) && isupper(i)) ? tolower(i) : i;
+ i = (isalpha(i) && isupper(i)) ? tolower(i) : i;
#else
- if (i >= 'A' && i <= 'Z')
- i += 'a' - 'A';
+ if (i >= 'A' && i <= 'Z')
+ i += 'a' - 'A';
#endif
- *cp++ = i;
- }
- }
- *cp = '\0';
- if (ansbuf[0] == '?' || cp == ansbuf) {
- printf ("Options are:\n");
- for (ap = ansp; ap->sw; ap++)
- printf (" %s\n", ap->sw);
- continue;
- }
- if ((i = smatch (ansbuf, ansp)) < 0) {
- printf ("%s: %s.\n", ansbuf, i == -1 ? "unknown" : "ambiguous");
- continue;
+ *cp++ = i;
+ }
+ }
+ *cp = '\0';
+ if (ansbuf[0] == '?' || cp == ansbuf) {
+ printf ("Options are:\n");
+ for (ap = ansp; ap->sw; ap++)
+ printf (" %s\n", ap->sw);
+ continue;
+ }
+ if ((i = smatch (ansbuf, ansp)) < 0) {
+ printf ("%s: %s.\n", ansbuf, i == -1 ? "unknown" : "ambiguous");
+ continue;
+ }
+ return i;
}
- return i;
- }
}