mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-16 10:20:30 +00:00
377 lines
9.5 KiB
C
377 lines
9.5 KiB
C
/*
|
|
* Copyright (c) 1997, 1998 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. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by Kungliga Tekniska
|
|
* Högskolan and its contributors.
|
|
*
|
|
* 4. 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.
|
|
*/
|
|
|
|
#if 0
|
|
RCSID("$Id: getarg.c,v 1.25 1998/11/22 09:45:05 assar Exp $");
|
|
#endif
|
|
|
|
#include <sys/ttycom.h>
|
|
#include <time.h>
|
|
#include <stdio.h>
|
|
#include "getarg.h"
|
|
|
|
#define ISFLAG(X) ((X).type == arg_flag || (X).type == arg_negative_flag)
|
|
|
|
static size_t
|
|
print_arg (char *string, size_t len, int mdoc, int longp, struct getargs *arg)
|
|
{
|
|
const char *s;
|
|
|
|
*string = '\0';
|
|
|
|
if (ISFLAG(*arg))
|
|
return 0;
|
|
|
|
if(mdoc){
|
|
if(longp)
|
|
strncat(string, "= Ns", len);
|
|
strncat(string, " Ar ", len);
|
|
}else
|
|
if (longp)
|
|
strncat (string, "=", len);
|
|
else
|
|
strncat (string, " ", len);
|
|
|
|
if (arg->arg_help)
|
|
s = arg->arg_help;
|
|
else if (arg->type == arg_integer)
|
|
s = "number";
|
|
else if (arg->type == arg_string)
|
|
s = "string";
|
|
else
|
|
s = "<undefined>";
|
|
|
|
strncat(string, s, len);
|
|
return 1 + strlen(s);
|
|
}
|
|
|
|
static int
|
|
check_column(FILE *f, int col, int len, int columns)
|
|
{
|
|
if(col + len > columns) {
|
|
fprintf(f, "\n");
|
|
col = fprintf(f, " ");
|
|
}
|
|
return col;
|
|
}
|
|
|
|
void
|
|
arg_printusage (struct getargs *args,
|
|
size_t num_args,
|
|
const char *progname,
|
|
const char *extra_string)
|
|
{
|
|
int i;
|
|
size_t max_len = 0;
|
|
char buf[128];
|
|
int col = 0, columns;
|
|
struct winsize ws;
|
|
|
|
columns = 80;
|
|
col = 0;
|
|
col += fprintf (stderr, "Usage: %s", progname);
|
|
for (i = 0; i < num_args; ++i) {
|
|
size_t len = 0;
|
|
|
|
if (args[i].long_name) {
|
|
buf[0] = '\0';
|
|
strncat(buf, "[--", sizeof(buf));
|
|
len += 2;
|
|
if(args[i].type == arg_negative_flag) {
|
|
strncat(buf, "no-", sizeof(buf));
|
|
len += 3;
|
|
}
|
|
strncat(buf, args[i].long_name, sizeof(buf));
|
|
len += strlen(args[i].long_name);
|
|
len += print_arg(buf + strlen(buf), sizeof(buf) - strlen(buf),
|
|
0, 1, &args[i]);
|
|
strncat(buf, "]", sizeof(buf));
|
|
if(args[i].type == arg_strings)
|
|
strncat(buf, "...", sizeof(buf));
|
|
col = check_column(stderr, col, strlen(buf) + 1, columns);
|
|
col += fprintf(stderr, " %s", buf);
|
|
}
|
|
if (args[i].short_name) {
|
|
snprintf(buf, sizeof(buf), "[-%c", args[i].short_name);
|
|
len += 2;
|
|
len += print_arg(buf + strlen(buf), sizeof(buf) - strlen(buf),
|
|
0, 0, &args[i]);
|
|
strncat(buf, "]", sizeof(buf));
|
|
if(args[i].type == arg_strings)
|
|
strncat(buf, "...", sizeof(buf));
|
|
col = check_column(stderr, col, strlen(buf) + 1, columns);
|
|
col += fprintf(stderr, " %s", buf);
|
|
}
|
|
if (args[i].long_name && args[i].short_name)
|
|
len += 2; /* ", " */
|
|
max_len = max(max_len, len);
|
|
}
|
|
if (extra_string) {
|
|
col = check_column(stderr, col, strlen(extra_string) + 1, columns);
|
|
fprintf (stderr, " %s\n", extra_string);
|
|
} else
|
|
fprintf (stderr, "\n");
|
|
for (i = 0; i < num_args; ++i) {
|
|
if (args[i].help) {
|
|
size_t count = 0;
|
|
|
|
if (args[i].short_name) {
|
|
count += fprintf (stderr, "-%c", args[i].short_name);
|
|
print_arg (buf, sizeof(buf), 0, 0, &args[i]);
|
|
count += fprintf(stderr, "%s", buf);
|
|
}
|
|
if (args[i].short_name && args[i].long_name)
|
|
count += fprintf (stderr, ", ");
|
|
if (args[i].long_name) {
|
|
count += fprintf (stderr, "--");
|
|
if (args[i].type == arg_negative_flag)
|
|
count += fprintf (stderr, "no-");
|
|
count += fprintf (stderr, "%s", args[i].long_name);
|
|
print_arg (buf, sizeof(buf), 0, 1, &args[i]);
|
|
count += fprintf(stderr, "%s", buf);
|
|
}
|
|
while(count++ <= max_len)
|
|
putc (' ', stderr);
|
|
fprintf (stderr, "%s\n", args[i].help);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
add_string(getarg_strings *s, char *value)
|
|
{
|
|
s->strings = realloc(s->strings, (s->num_strings + 1) * sizeof(*s->strings));
|
|
s->strings[s->num_strings] = value;
|
|
s->num_strings++;
|
|
}
|
|
|
|
static int
|
|
arg_match_long(struct getargs *args, size_t num_args,
|
|
char *argv)
|
|
{
|
|
int i;
|
|
char *optarg = NULL;
|
|
int negate = 0;
|
|
int partial_match = 0;
|
|
struct getargs *partial = NULL;
|
|
struct getargs *current = NULL;
|
|
int argv_len;
|
|
char *p;
|
|
|
|
argv_len = strlen(argv);
|
|
p = strchr (argv, '=');
|
|
if (p != NULL)
|
|
argv_len = p - argv;
|
|
|
|
for (i = 0; i < num_args; ++i) {
|
|
if(args[i].long_name) {
|
|
int len = strlen(args[i].long_name);
|
|
char *p = argv;
|
|
int p_len = argv_len;
|
|
negate = 0;
|
|
|
|
for (;;) {
|
|
if (strncmp (args[i].long_name, p, p_len) == 0) {
|
|
if(p_len == len)
|
|
current = &args[i];
|
|
else {
|
|
++partial_match;
|
|
partial = &args[i];
|
|
}
|
|
optarg = p + p_len;
|
|
} else if (ISFLAG(args[i]) && strncmp (p, "no-", 3) == 0) {
|
|
negate = !negate;
|
|
p += 3;
|
|
p_len -= 3;
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
if (current)
|
|
break;
|
|
}
|
|
}
|
|
if (current == NULL) {
|
|
if (partial_match == 1)
|
|
current = partial;
|
|
else
|
|
return ARG_ERR_NO_MATCH;
|
|
}
|
|
|
|
if(*optarg == '\0' && !ISFLAG(*current))
|
|
return ARG_ERR_NO_MATCH;
|
|
switch(current->type){
|
|
case arg_integer:
|
|
{
|
|
int tmp;
|
|
if(sscanf(optarg + 1, "%d", &tmp) != 1)
|
|
return ARG_ERR_BAD_ARG;
|
|
*(int*)current->value = tmp;
|
|
return 0;
|
|
}
|
|
case arg_string:
|
|
{
|
|
*(char**)current->value = optarg + 1;
|
|
return 0;
|
|
}
|
|
case arg_strings:
|
|
{
|
|
add_string((getarg_strings*)current->value, optarg + 1);
|
|
return 0;
|
|
}
|
|
case arg_flag:
|
|
case arg_negative_flag:
|
|
{
|
|
int *flag = current->value;
|
|
if(*optarg == '\0' ||
|
|
strcmp(optarg + 1, "yes") == 0 ||
|
|
strcmp(optarg + 1, "true") == 0){
|
|
*flag = !negate;
|
|
return 0;
|
|
} else if (*optarg && strcmp(optarg + 1, "maybe") == 0) {
|
|
*flag = rand() & 1;
|
|
} else {
|
|
*flag = negate;
|
|
return 0;
|
|
}
|
|
return ARG_ERR_BAD_ARG;
|
|
}
|
|
default:
|
|
abort ();
|
|
}
|
|
}
|
|
|
|
int
|
|
getarg(struct getargs *args, size_t num_args,
|
|
int argc, char **argv, int *optind)
|
|
{
|
|
int i, j, k;
|
|
int ret = 0;
|
|
|
|
srand (time(NULL));
|
|
(*optind)++;
|
|
for(i = *optind; i < argc; i++) {
|
|
if(argv[i][0] != '-')
|
|
break;
|
|
if(argv[i][1] == '-'){
|
|
if(argv[i][2] == 0){
|
|
i++;
|
|
break;
|
|
}
|
|
ret = arg_match_long (args, num_args, argv[i] + 2);
|
|
if(ret)
|
|
return ret;
|
|
}else{
|
|
for(j = 1; argv[i][j]; j++) {
|
|
for(k = 0; k < num_args; k++) {
|
|
char *optarg;
|
|
if(args[k].short_name == 0)
|
|
continue;
|
|
if(argv[i][j] == args[k].short_name){
|
|
if(args[k].type == arg_flag){
|
|
*(int*)args[k].value = 1;
|
|
break;
|
|
}
|
|
if(args[k].type == arg_negative_flag){
|
|
*(int*)args[k].value = 0;
|
|
break;
|
|
}
|
|
if(argv[i][j + 1])
|
|
optarg = &argv[i][j + 1];
|
|
else{
|
|
i++;
|
|
optarg = argv[i];
|
|
}
|
|
if(optarg == NULL)
|
|
return ARG_ERR_NO_ARG;
|
|
if(args[k].type == arg_integer){
|
|
int tmp;
|
|
if(sscanf(optarg, "%d", &tmp) != 1)
|
|
return ARG_ERR_BAD_ARG;
|
|
*(int*)args[k].value = tmp;
|
|
goto out;
|
|
}else if(args[k].type == arg_string){
|
|
*(char**)args[k].value = optarg;
|
|
goto out;
|
|
}else if(args[k].type == arg_strings){
|
|
add_string((getarg_strings*)args[k].value, optarg);
|
|
goto out;
|
|
}
|
|
return ARG_ERR_BAD_ARG;
|
|
}
|
|
|
|
}
|
|
if (k == num_args)
|
|
return ARG_ERR_NO_MATCH;
|
|
}
|
|
out:;
|
|
}
|
|
}
|
|
*optind = i;
|
|
return 0;
|
|
}
|
|
|
|
#if TEST
|
|
int foo_flag = 2;
|
|
int flag1 = 0;
|
|
int flag2 = 0;
|
|
int bar_int;
|
|
char *baz_string;
|
|
|
|
struct getargs args[] = {
|
|
{ NULL, '1', arg_flag, &flag1, "one", NULL },
|
|
{ NULL, '2', arg_flag, &flag2, "two", NULL },
|
|
{ "foo", 'f', arg_negative_flag, &foo_flag, "foo", NULL },
|
|
{ "bar", 'b', arg_integer, &bar_int, "bar", "seconds"},
|
|
{ "baz", 'x', arg_string, &baz_string, "baz", "name" },
|
|
};
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
int optind = 0;
|
|
while(getarg(args, 5, argc, argv, &optind))
|
|
printf("Bad arg: %s\n", argv[optind]);
|
|
printf("flag1 = %d\n", flag1);
|
|
printf("flag2 = %d\n", flag2);
|
|
printf("foo_flag = %d\n", foo_flag);
|
|
printf("bar_int = %d\n", bar_int);
|
|
printf("baz_flag = %s\n", baz_string);
|
|
arg_printusage (args, 5, argv[0], "nothing here");
|
|
}
|
|
#endif
|