Import of readline 4.1

[deliverable/binutils-gdb.git] / readline / examples / rl.c

diff --git a/readline/examples/rl.c b/readline/examples/rl.c
index 17a63434f24f38ba404fc5a015bb05aca85d329e..2d1d17e600d7b658bfbfda6d3c45d7e1d696d456 100644 (file)
--- a/readline/examples/rl.c
+++ b/readline/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. */