diff options
Diffstat (limited to 'examples/rl.c')
| -rw-r--r-- | examples/rl.c | 39 |
1 files changed, 26 insertions, 13 deletions
diff --git a/examples/rl.c b/examples/rl.c index 17a6343..2d1d17e 100644 --- a/examples/rl.c +++ b/examples/rl.c @@ -2,15 +2,9 @@ * rl - command-line interface to read a line from the standard input * (or another fd) using readline. * - * usage: rl [-p prompt] [-u unit] [-d default] + * usage: rl [-p prompt] [-u unit] [-d default] [-n nchars] */ -/* - * Remove the next line if you're compiling this against an installed - * libreadline.a - */ -#define READLINE_LIBRARY - #if defined (HAVE_CONFIG_H) # include <config.h> #endif @@ -18,8 +12,14 @@ #include <stdio.h> #include <sys/types.h> #include "posixstat.h" -#include "readline.h" -#include "history.h" + +#if defined (READLINE_LIBRARY) +# include "readline.h" +# include "history.h" +#else +# include <readline/readline.h> +# include <readline/history.h> +#endif extern int optind; extern char *optarg; @@ -40,22 +40,24 @@ set_deftext () deftext = (char *)NULL; rl_startup_hook = (Function *)NULL; } + return 0; } static void usage() { - fprintf (stderr, "%s: usage: %s [-p prompt] [-u unit] [-d default]\n", + fprintf (stderr, "%s: usage: %s [-p prompt] [-u unit] [-d default] [-n nchars]\n", progname, progname); } +int main (argc, argv) int argc; char **argv; { char *temp, *prompt; struct stat sb; - int opt, fd; + int opt, fd, nch; FILE *ifp; progname = strrchr(argv[0], '/'); @@ -66,10 +68,10 @@ main (argc, argv) /* defaults */ prompt = "readline$ "; - fd = 0; + fd = nch = 0; deftext = (char *)0; - while ((opt = getopt(argc, argv, "p:u:d:")) != EOF) + while ((opt = getopt(argc, argv, "p:u:d:n:")) != EOF) { switch (opt) { @@ -87,6 +89,14 @@ main (argc, argv) case 'd': deftext = optarg; break; + case 'n': + nch = atoi(optarg); + if (nch < 0) + { + fprintf (stderr, "%s: bad value for -n: `%s'\n", progname, optarg); + exit (2); + } + break; default: usage (); exit (2); @@ -107,6 +117,9 @@ main (argc, argv) if (deftext && *deftext) rl_startup_hook = set_deftext; + if (nch > 0) + rl_num_chars_to_read = nch; + temp = readline (prompt); /* Test for EOF. */ |