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5e9177fd18
This changeset refactors el_bind_key_in_metamap() into two functions, adding el_bind_key(), to provide the ability for the user to bind keys in both the regular and the meta-key maps. Several useful, but previously internal, functions have been made global to facilitate the example code mentioned above. These are likely useful to the user of this library as well: el_print_columns() - Display words in columns across a tty_cols wide screen. el_ring_bell() - Can be used as default key binding function. el_find_word() - Returns a copy of the word at rl_point.
125 lines
3.0 KiB
C
125 lines
3.0 KiB
C
/* Custom CLI command completion.
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*
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* Copyright (c) 1992, 1993 Simmule Turner and Rich Salz. All rights reserved.
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*
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* This software is not subject to any license of the American Telephone
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* and Telegraph Company or of the Regents of the University of California.
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*
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* Permission is granted to anyone to use this software for any purpose on
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* any computer system, and to alter it and redistribute it freely, subject
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* to the following restrictions:
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* 1. The authors are not responsible for the consequences of use of this
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* software, no matter how awful, even if they arise from flaws in it.
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* 2. The origin of this software must not be misrepresented, either by
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* explicit claim or by omission. Since few users ever read sources,
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* credits must appear in the documentation.
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* 3. Altered versions must be plainly marked as such, and must not be
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* misrepresented as being the original software. Since few users
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* ever read sources, credits must appear in the documentation.
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* 4. This notice may not be removed or altered.
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*/
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#include "editline.h"
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#include <string.h>
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#define HISTORY "/tmp/.cli-history"
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static char *list[] = {
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"foo ", "bar ", "bsd ", "cli ", "ls ", "cd ", "malloc ", "tee ", NULL
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};
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/* Attempt to complete the pathname, returning an allocated copy.
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* Fill in *unique if we completed it, or set it to 0 if ambiguous. */
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static char *my_rl_complete(char *token, int *match)
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{
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int i;
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int index = -1;
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int matchlen = 0;
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int count = 0;
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for (i = 0; list[i]; i++)
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{
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int partlen = strlen (token); /* Part of token */
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if (!strncmp (list[i], token, partlen))
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{
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index = i;
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matchlen = partlen;
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count ++;
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}
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}
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if (count == 1)
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{
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*match = 1;
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return strdup (list[index] + matchlen);
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}
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return NULL;
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}
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/* Return all possible completions. */
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static int my_rl_list_possib(char *token, char ***av)
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{
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int i, num, total = 0;
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char **copy;
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for (num = 0; list[num]; num++)
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;
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copy = (char **) malloc (num * sizeof(char *));
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for (i = 0; i < num; i++)
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{
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if (!strncmp (list[i], token, strlen (token)))
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{
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copy[total] = strdup (list[i]);
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total ++;
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}
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}
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*av = copy;
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return total;
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}
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el_status_t list_possible(void)
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{
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char **av;
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char *word;
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int ac;
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word = el_find_word();
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ac = rl_list_possib(word, &av);
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if (word)
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free(word);
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if (ac) {
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el_print_columns(ac, av);
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while (--ac >= 0)
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free(av[ac]);
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free(av);
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return CSmove;
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}
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return el_ring_bell();
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}
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int main(int ac __attribute__ ((unused)), char *av[] __attribute__ ((unused)))
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{
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char *line;
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char *prompt = "cli> ";
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/* Setup callbacks */
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rl_set_complete_func(&my_rl_complete);
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rl_set_list_possib_func(&my_rl_list_possib);
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el_bind_key('?', list_possible);
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read_history(HISTORY);
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while ((line = readline(prompt)) != NULL) {
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printf("\t\t\t|%s|\n", line);
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free(line);
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}
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write_history(HISTORY);
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return 0;
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}
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