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Diffstat (limited to 'src/lib/krb4/fgetst.c')
-rw-r--r-- | src/lib/krb4/fgetst.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/src/lib/krb4/fgetst.c b/src/lib/krb4/fgetst.c new file mode 100644 index 0000000000..b5d8aa5cbb --- /dev/null +++ b/src/lib/krb4/fgetst.c @@ -0,0 +1,35 @@ +/* + * fgetst.c + * + * Copyright 1987, 1988 by the Massachusetts Institute of Technology. + * + * For copying and distribution information, please see the file + * <mit-copyright.h>. + */ + +#include "mit-copyright.h" +#include <stdio.h> + +/* + * fgetst takes a file descriptor, a character pointer, and a count. + * It reads from the file it has either read "count" characters, or + * until it reads a null byte. When finished, what has been read exists + * in "s". If "count" characters were actually read, the last is changed + * to a null, so the returned string is always null-terminated. fgetst + * returns the number of characters read, including the null terminator. + */ + +fgetst(f, s, n) + FILE *f; + register char *s; + int n; +{ + register count = n; + int ch; /* NOT char; otherwise you don't see EOF */ + + while ((ch = getc(f)) != EOF && ch && --count) { + *s++ = ch; + } + *s = '\0'; + return (n - count); +} |