mirror of
https://github.com/freebsd/freebsd-src.git
synced 2024-12-03 23:28:57 +00:00
347 lines
8.0 KiB
C
347 lines
8.0 KiB
C
/*
|
|
* Copyright (c) 1995 - 2001 Kungliga Tekniska Högskolan
|
|
* (Royal Institute of Technology, Stockholm, Sweden).
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* 3. Neither the name of the Institute nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include <config.h>
|
|
RCSID("$Id: sl.c,v 1.29 2001/02/20 01:44:55 assar Exp $");
|
|
#endif
|
|
|
|
#include "sl_locl.h"
|
|
#include <setjmp.h>
|
|
|
|
static size_t
|
|
print_sl (FILE *stream, int mdoc, int longp, SL_cmd *c)
|
|
__attribute__ ((unused));
|
|
|
|
static size_t
|
|
print_sl (FILE *stream, int mdoc, int longp, SL_cmd *c)
|
|
{
|
|
if(mdoc){
|
|
if(longp)
|
|
fprintf(stream, "= Ns");
|
|
fprintf(stream, " Ar ");
|
|
}else
|
|
if (longp)
|
|
putc ('=', stream);
|
|
else
|
|
putc (' ', stream);
|
|
|
|
return 1;
|
|
}
|
|
|
|
static void
|
|
mandoc_template(SL_cmd *cmds,
|
|
const char *extra_string)
|
|
{
|
|
SL_cmd *c, *prev;
|
|
char timestr[64], cmd[64];
|
|
const char *p;
|
|
time_t t;
|
|
|
|
printf(".\\\" Things to fix:\n");
|
|
printf(".\\\" * correct section, and operating system\n");
|
|
printf(".\\\" * remove Op from mandatory flags\n");
|
|
printf(".\\\" * use better macros for arguments (like .Pa for files)\n");
|
|
printf(".\\\"\n");
|
|
t = time(NULL);
|
|
strftime(timestr, sizeof(timestr), "%b %d, %Y", localtime(&t));
|
|
printf(".Dd %s\n", timestr);
|
|
p = strrchr(getprogname(), '/');
|
|
if(p) p++; else p = getprogname();
|
|
strncpy(cmd, p, sizeof(cmd));
|
|
cmd[sizeof(cmd)-1] = '\0';
|
|
strupr(cmd);
|
|
|
|
printf(".Dt %s SECTION\n", cmd);
|
|
printf(".Os OPERATING_SYSTEM\n");
|
|
printf(".Sh NAME\n");
|
|
printf(".Nm %s\n", p);
|
|
printf(".Nd\n");
|
|
printf("in search of a description\n");
|
|
printf(".Sh SYNOPSIS\n");
|
|
printf(".Nm\n");
|
|
for(c = cmds; c->name; ++c) {
|
|
/* if (c->func == NULL)
|
|
continue; */
|
|
printf(".Op Fl %s", c->name);
|
|
/* print_sl(stdout, 1, 0, c);*/
|
|
printf("\n");
|
|
|
|
}
|
|
if (extra_string && *extra_string)
|
|
printf (".Ar %s\n", extra_string);
|
|
printf(".Sh DESCRIPTION\n");
|
|
printf("Supported options:\n");
|
|
printf(".Bl -tag -width Ds\n");
|
|
prev = NULL;
|
|
for(c = cmds; c->name; ++c) {
|
|
if (c->func) {
|
|
if (prev)
|
|
printf ("\n%s\n", prev->usage);
|
|
|
|
printf (".It Fl %s", c->name);
|
|
prev = c;
|
|
} else
|
|
printf (", %s\n", c->name);
|
|
}
|
|
if (prev)
|
|
printf ("\n%s\n", prev->usage);
|
|
|
|
printf(".El\n");
|
|
printf(".\\\".Sh ENVIRONMENT\n");
|
|
printf(".\\\".Sh FILES\n");
|
|
printf(".\\\".Sh EXAMPLES\n");
|
|
printf(".\\\".Sh DIAGNOSTICS\n");
|
|
printf(".\\\".Sh SEE ALSO\n");
|
|
printf(".\\\".Sh STANDARDS\n");
|
|
printf(".\\\".Sh HISTORY\n");
|
|
printf(".\\\".Sh AUTHORS\n");
|
|
printf(".\\\".Sh BUGS\n");
|
|
}
|
|
|
|
static SL_cmd *
|
|
sl_match (SL_cmd *cmds, char *cmd, int exactp)
|
|
{
|
|
SL_cmd *c, *current = NULL, *partial_cmd = NULL;
|
|
int partial_match = 0;
|
|
|
|
for (c = cmds; c->name; ++c) {
|
|
if (c->func)
|
|
current = c;
|
|
if (strcmp (cmd, c->name) == 0)
|
|
return current;
|
|
else if (strncmp (cmd, c->name, strlen(cmd)) == 0 &&
|
|
partial_cmd != current) {
|
|
++partial_match;
|
|
partial_cmd = current;
|
|
}
|
|
}
|
|
if (partial_match == 1 && !exactp)
|
|
return partial_cmd;
|
|
else
|
|
return NULL;
|
|
}
|
|
|
|
void
|
|
sl_help (SL_cmd *cmds, int argc, char **argv)
|
|
{
|
|
SL_cmd *c, *prev_c;
|
|
|
|
if (getenv("SLMANDOC")) {
|
|
mandoc_template(cmds, NULL);
|
|
return;
|
|
}
|
|
|
|
if (argc == 1) {
|
|
prev_c = NULL;
|
|
for (c = cmds; c->name; ++c) {
|
|
if (c->func) {
|
|
if(prev_c)
|
|
printf ("\n\t%s%s", prev_c->usage ? prev_c->usage : "",
|
|
prev_c->usage ? "\n" : "");
|
|
prev_c = c;
|
|
printf ("%s", c->name);
|
|
} else
|
|
printf (", %s", c->name);
|
|
}
|
|
if(prev_c)
|
|
printf ("\n\t%s%s", prev_c->usage ? prev_c->usage : "",
|
|
prev_c->usage ? "\n" : "");
|
|
} else {
|
|
c = sl_match (cmds, argv[1], 0);
|
|
if (c == NULL)
|
|
printf ("No such command: %s. "
|
|
"Try \"help\" for a list of all commands\n",
|
|
argv[1]);
|
|
else {
|
|
printf ("%s\t%s\n", c->name, c->usage);
|
|
if(c->help && *c->help)
|
|
printf ("%s\n", c->help);
|
|
if((++c)->name && c->func == NULL) {
|
|
printf ("Synonyms:");
|
|
while (c->name && c->func == NULL)
|
|
printf ("\t%s", (c++)->name);
|
|
printf ("\n");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifdef HAVE_READLINE
|
|
|
|
char *readline(char *prompt);
|
|
void add_history(char *p);
|
|
|
|
#else
|
|
|
|
static char *
|
|
readline(char *prompt)
|
|
{
|
|
char buf[BUFSIZ];
|
|
printf ("%s", prompt);
|
|
fflush (stdout);
|
|
if(fgets(buf, sizeof(buf), stdin) == NULL)
|
|
return NULL;
|
|
if (buf[strlen(buf) - 1] == '\n')
|
|
buf[strlen(buf) - 1] = '\0';
|
|
return strdup(buf);
|
|
}
|
|
|
|
static void
|
|
add_history(char *p)
|
|
{
|
|
}
|
|
|
|
#endif
|
|
|
|
int
|
|
sl_command(SL_cmd *cmds, int argc, char **argv)
|
|
{
|
|
SL_cmd *c;
|
|
c = sl_match (cmds, argv[0], 0);
|
|
if (c == NULL)
|
|
return -1;
|
|
return (*c->func)(argc, argv);
|
|
}
|
|
|
|
struct sl_data {
|
|
int max_count;
|
|
char **ptr;
|
|
};
|
|
|
|
int
|
|
sl_make_argv(char *line, int *ret_argc, char ***ret_argv)
|
|
{
|
|
char *foo = NULL;
|
|
char *p;
|
|
int argc, nargv;
|
|
char **argv;
|
|
|
|
nargv = 10;
|
|
argv = malloc(nargv * sizeof(*argv));
|
|
if(argv == NULL)
|
|
return ENOMEM;
|
|
argc = 0;
|
|
|
|
for(p = strtok_r (line, " \t", &foo);
|
|
p;
|
|
p = strtok_r (NULL, " \t", &foo)) {
|
|
if(argc == nargv - 1) {
|
|
char **tmp;
|
|
nargv *= 2;
|
|
tmp = realloc (argv, nargv * sizeof(*argv));
|
|
if (tmp == NULL) {
|
|
free(argv);
|
|
return ENOMEM;
|
|
}
|
|
argv = tmp;
|
|
}
|
|
argv[argc++] = p;
|
|
}
|
|
argv[argc] = NULL;
|
|
*ret_argc = argc;
|
|
*ret_argv = argv;
|
|
return 0;
|
|
}
|
|
|
|
static jmp_buf sl_jmp;
|
|
|
|
static void sl_sigint(int sig)
|
|
{
|
|
longjmp(sl_jmp, 1);
|
|
}
|
|
|
|
static char *sl_readline(const char *prompt)
|
|
{
|
|
char *s;
|
|
void (*old)(int);
|
|
old = signal(SIGINT, sl_sigint);
|
|
if(setjmp(sl_jmp))
|
|
printf("\n");
|
|
s = readline((char*)prompt);
|
|
signal(SIGINT, old);
|
|
return s;
|
|
}
|
|
|
|
/* return values: 0 on success, -1 on fatal error, or return value of command */
|
|
int
|
|
sl_command_loop(SL_cmd *cmds, const char *prompt, void **data)
|
|
{
|
|
int ret = 0;
|
|
char *buf;
|
|
int argc;
|
|
char **argv;
|
|
|
|
ret = 0;
|
|
buf = sl_readline(prompt);
|
|
if(buf == NULL)
|
|
return 1;
|
|
|
|
if(*buf)
|
|
add_history(buf);
|
|
ret = sl_make_argv(buf, &argc, &argv);
|
|
if(ret) {
|
|
fprintf(stderr, "sl_loop: out of memory\n");
|
|
free(buf);
|
|
return -1;
|
|
}
|
|
if (argc >= 1) {
|
|
ret = sl_command(cmds, argc, argv);
|
|
if(ret == -1) {
|
|
printf ("Unrecognized command: %s\n", argv[0]);
|
|
ret = 0;
|
|
}
|
|
}
|
|
free(buf);
|
|
free(argv);
|
|
return ret;
|
|
}
|
|
|
|
int
|
|
sl_loop(SL_cmd *cmds, const char *prompt)
|
|
{
|
|
void *data = NULL;
|
|
int ret;
|
|
while((ret = sl_command_loop(cmds, prompt, &data)) == 0)
|
|
;
|
|
return ret;
|
|
}
|
|
|
|
void
|
|
sl_apropos (SL_cmd *cmd, const char *topic)
|
|
{
|
|
for (; cmd->name != NULL; ++cmd)
|
|
if (cmd->usage != NULL && strstr(cmd->usage, topic) != NULL)
|
|
printf ("%-20s%s\n", cmd->name, cmd->usage);
|
|
}
|