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/*
* Description.
*
* Copyright (C) 1999-2010, Broadcom Corporation
*
* Unless you and Broadcom execute a separate written software license
* agreement governing use of this software, this software is licensed to you
* under the terms of the GNU General Public License version 2 (the "GPL"),
* available at http://www.broadcom.com/licenses/GPLv2.php, with the
* following added to such license:
*
* As a special exception, the copyright holders of this software give you
* permission to link this software with independent modules, and to copy and
* distribute the resulting executable under terms of your choice, provided that
* you also meet, for each linked independent module, the terms and conditions of
* the license of that module. An independent module is a module which is not
* derived from this software. The special exception does not apply to any
* modifications of the software.
*
* Notwithstanding the above, under no circumstances may you combine this
* software in any way with any other Broadcom software provided under a license
* other than the GPL, without Broadcom's express prior written consent.
* $Id: miniopt.c,v 1.1.6.4 2009/09/25 00:32:01 Exp $
*/
/* ---- Include Files ---------------------------------------------------- */
#include <typedefs.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "miniopt.h"
/* ---- Public Variables ------------------------------------------------- */
/* ---- Private Constants and Types -------------------------------------- */
/* ---- Private Variables ------------------------------------------------ */
/* ---- Private Function Prototypes -------------------------------------- */
/* ---- Functions -------------------------------------------------------- */
/* ----------------------------------------------------------------------- */
void
miniopt_init(miniopt_t *t, const char* name, const char* flags, bool longflags)
{
static const char *null_flags = "";
memset(t, 0, sizeof(miniopt_t));
t->name = name;
if (flags == NULL)
t->flags = null_flags;
else
t->flags = flags;
t->longflags = longflags;
}
/* ----------------------------------------------------------------------- */
int
miniopt(miniopt_t *t, char **argv)
{
int keylen;
char *p, *eq, *valstr, *endptr = NULL;
int err = 0;
t->consumed = 0;
t->positional = FALSE;
memset(t->key, 0, MINIOPT_MAXKEY);
t->opt = '\0';
t->valstr = NULL;
t->good_int = FALSE;
valstr = NULL;
if (*argv == NULL) {
err = -1;
goto exit;
}
p = *argv++;
t->consumed++;
if (!t->opt_end && !strcmp(p, "--")) {
t->opt_end = TRUE;
if (*argv == NULL) {
err = -1;
goto exit;
}
p = *argv++;
t->consumed++;
}
if (t->opt_end) {
t->positional = TRUE;
valstr = p;
}
else if (!strncmp(p, "--", 2)) {
eq = strchr(p, '=');
if (eq == NULL && !t->longflags) {
fprintf(stderr,
"%s: missing \" = \" in long param \"%s\"\n", t->name, p);
err = 1;
goto exit;
}
keylen = eq ? (eq - (p + 2)) : (int)strlen(p) - 2;
if (keylen > 63) keylen = 63;
memcpy(t->key, p + 2, keylen);
if (eq) {
valstr = eq + 1;
if (*valstr == '\0') {
fprintf(stderr,
"%s: missing value after \" = \" in long param \"%s\"\n",
t->name, p);
err = 1;
goto exit;
}
}
}
else if (!strncmp(p, "-", 1)) {
t->opt = p[1];
if (strlen(p) > 2) {
fprintf(stderr,
"%s: only single char options, error on param \"%s\"\n",
t->name, p);
err = 1;
goto exit;
}
if (strchr(t->flags, t->opt)) {
/* this is a flag option, no value expected */
valstr = NULL;
} else {
if (*argv == NULL) {
fprintf(stderr,
"%s: missing value parameter after \"%s\"\n", t->name, p);
err = 1;
goto exit;
}
valstr = *argv;
argv++;
t->consumed++;
}
} else {
t->positional = TRUE;
valstr = p;
}
/* parse valstr as int just in case */
if (valstr) {
t->uval = (uint)strtoul(valstr, &endptr, 0);
t->val = (int)t->uval;
t->good_int = (*endptr == '\0');
}
t->valstr = valstr;
exit:
if (err == 1)
t->opt = '?';
return err;
}
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