116 lines
1.9 KiB
C
116 lines
1.9 KiB
C
/*
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* rl - command-line interface to read a line from the standard input
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* (or another fd) using readline.
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*
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* usage: rl [-p prompt] [-u unit] [-d default]
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*/
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/*
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* Remove the next line if you're compiling this against an installed
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* libreadline.a
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*/
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#define READLINE_LIBRARY
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#if defined (HAVE_CONFIG_H)
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#include <config.h>
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#endif
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#include <stdio.h>
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#include <sys/types.h>
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#include "posixstat.h"
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#include "readline.h"
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#include "history.h"
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extern int optind;
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extern char *optarg;
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extern char *strrchr();
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static char *progname;
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static char *deftext;
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static int
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set_deftext ()
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{
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if (deftext)
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{
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rl_insert_text (deftext);
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deftext = (char *)NULL;
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rl_startup_hook = (Function *)NULL;
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}
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}
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usage()
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{
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fprintf (stderr, "%s: usage: %s [-p prompt] [-u unit] [-d default]\n",
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progname, progname);
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}
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main (argc, argv)
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int argc;
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char **argv;
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{
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char *temp, *prompt;
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struct stat sb;
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int done, opt, fd;
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FILE *ifp;
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progname = strrchr(argv[0], '/');
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if (progname == 0)
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progname = argv[0];
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else
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progname++;
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/* defaults */
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prompt = "readline$ ";
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fd = 0;
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deftext = (char *)0;
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while ((opt = getopt(argc, argv, "p:u:d:")) != EOF)
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{
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switch (opt)
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{
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case 'p':
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prompt = optarg;
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break;
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case 'u':
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fd = atoi(optarg);
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if (fd < 0)
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{
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fprintf (stderr, "%s: bad file descriptor `%s'\n", progname, optarg);
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exit (2);
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}
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break;
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case 'd':
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deftext = optarg;
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break;
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default:
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usage ();
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exit (2);
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}
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}
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if (fd != 0)
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{
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if (fstat (fd, &sb) < 0)
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{
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fprintf (stderr, "%s: %d: bad file descriptor\n", progname, fd);
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exit (1);
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}
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ifp = fdopen (fd, "r");
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rl_instream = ifp;
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}
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if (deftext && *deftext)
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rl_startup_hook = set_deftext;
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temp = readline (prompt);
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/* Test for EOF. */
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if (temp == 0)
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exit (1);
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puts (temp);
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exit (0);
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}
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