2 * Copyright (c) 1995, 1996, 1997, 1998 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * 3. Neither the name of the Institute nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 RCSID("$Id: sl.c,v 1.25 1999/12/02 16:58:55 joda Exp $");
42 sl_match (SL_cmd *cmds, char *cmd, int exactp)
44 SL_cmd *c, *current = NULL, *partial_cmd = NULL;
45 int partial_match = 0;
47 for (c = cmds; c->name; ++c) {
50 if (strcmp (cmd, c->name) == 0)
52 else if (strncmp (cmd, c->name, strlen(cmd)) == 0 &&
53 partial_cmd != current) {
55 partial_cmd = current;
58 if (partial_match == 1 && !exactp)
65 sl_help (SL_cmd *cmds, int argc, char **argv)
71 for (c = cmds; c->name; ++c) {
74 printf ("\n\t%s%s", prev_c->usage ? prev_c->usage : "",
75 prev_c->usage ? "\n" : "");
77 printf ("%s", c->name);
79 printf (", %s", c->name);
82 printf ("\n\t%s%s", prev_c->usage ? prev_c->usage : "",
83 prev_c->usage ? "\n" : "");
85 c = sl_match (cmds, argv[1], 0);
87 printf ("No such command: %s. "
88 "Try \"help\" for a list of all commands\n",
91 printf ("%s\t%s\n", c->name, c->usage);
92 if(c->help && *c->help)
93 printf ("%s\n", c->help);
94 if((++c)->name && c->func == NULL) {
96 while (c->name && c->func == NULL)
97 printf ("\t%s", (c++)->name);
106 char *readline(char *prompt);
107 void add_history(char *p);
112 readline(char *prompt)
115 printf ("%s", prompt);
117 if(fgets(buf, sizeof(buf), stdin) == NULL)
119 if (buf[strlen(buf) - 1] == '\n')
120 buf[strlen(buf) - 1] = '\0';
132 sl_command(SL_cmd *cmds, int argc, char **argv)
135 c = sl_match (cmds, argv[0], 0);
138 return (*c->func)(argc, argv);
147 sl_make_argv(char *line, int *ret_argc, char ***ret_argv)
155 argv = malloc(nargv * sizeof(*argv));
160 for(p = strtok_r (line, " \t", &foo);
162 p = strtok_r (NULL, " \t", &foo)) {
163 if(argc == nargv - 1) {
166 tmp = realloc (argv, nargv * sizeof(*argv));
181 /* return values: 0 on success, -1 on fatal error, or return value of command */
183 sl_command_loop(SL_cmd *cmds, char *prompt, void **data)
191 buf = readline(prompt);
197 ret = sl_make_argv(buf, &argc, &argv);
199 fprintf(stderr, "sl_loop: out of memory\n");
204 ret = sl_command(cmds, argc, argv);
206 printf ("Unrecognized command: %s\n", argv[0]);
216 sl_loop(SL_cmd *cmds, char *prompt)
220 while((ret = sl_command_loop(cmds, prompt, &data)) == 0)