nut-debian/tools/nut-scanner/nutscan-device.c

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2011-09-29 21:14:46 +03:00
/* device.c: manipulation of a container describing a NUT device
*
* Copyright (C) 2011 - Frederic Bohe <fredericbohe@eaton.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "nutscan-device.h"
#include <stdlib.h>
#include <string.h>
nutscan_device_t * nutscan_new_device()
{
nutscan_device_t * device;
device = malloc(sizeof(nutscan_device_t));
if( device==NULL) {
return NULL;
}
memset(device,0,sizeof(nutscan_device_t));
return device;
}
static void deep_free_device(nutscan_device_t * device)
{
nutscan_options_t * current;
nutscan_options_t * old;
if(device==NULL) {
return;
}
if(device->driver) {
free(device->driver);
}
if(device->port) {
free(device->port);
}
current = &device->opt;
if(current->option != NULL) {
free(current->option);
}
if(current->value != NULL) {
free(current->value);
}
current = current->next;
while (current != NULL) {
if(current->option != NULL) {
free(current->option);
}
if(current->value != NULL) {
free(current->value);
}
old = current;
current = current->next;
free(old);
};
if(device->prev) {
device->prev->next = device->next;
}
if(device->next) {
device->next->prev = device->prev;
}
free(device);
}
void nutscan_free_device(nutscan_device_t * device)
{
if(device==NULL) {
return;
}
while(device->prev != NULL) {
deep_free_device(device->prev);
}
while(device->next != NULL) {
deep_free_device(device->next);
}
free(device);
}
void nutscan_add_option_to_device(nutscan_device_t * device,char * option, char * value)
{
nutscan_options_t * opt;
opt = &(device->opt);
/* search for last entry */
if( opt->option != NULL ) {
while( opt->next != NULL ) {
opt = opt->next;
}
opt->next = malloc(sizeof(nutscan_options_t));
opt = opt->next;
memset(opt,0,sizeof(nutscan_options_t));
}
if( option != NULL ) {
opt->option = strdup(option);
}
else {
opt->option = NULL;
}
if( value != NULL ) {
opt->value = strdup(value);
}
else {
opt->value = NULL;
}
}
nutscan_device_t * nutscan_add_device_to_device(nutscan_device_t * first, nutscan_device_t * second)
{
nutscan_device_t * dev1=NULL;
nutscan_device_t * dev2=NULL;
/* Get end of first device */
if( first != NULL) {
dev1 = first;
while(dev1->next != NULL) {
dev1 = dev1->next;
}
}
else {
if( second == NULL ) {
return NULL;
}
/* return end of second */
dev2 = second;
while(dev2->next != NULL) {
dev2 = dev2->next;
}
return dev2;
}
/* Get start of second */
if( second != NULL ) {
dev2 = second;
while(dev2->prev != NULL) {
dev2 = dev2->prev;
}
}
else {
/* return end of first */
dev1 = first;
while(dev1->next != NULL) {
dev1 = dev1->next;
}
return dev1;
}
/* join both */
dev1->next = dev2;
dev2->prev = dev1;
/* return end of both */
while(dev2->next != NULL) {
dev2 = dev2->next;
}
return dev2;
}