87 lines
2.1 KiB
C
87 lines
2.1 KiB
C
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/*
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* Copyright (c) 2007 Vreixo Formoso
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*
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* This file is part of the libisofs project; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation. See COPYING file for details.
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*/
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#include "libisofs.h"
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#include "image.h"
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#include "error.h"
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#include "node.h"
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#include <stdlib.h>
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#include <string.h>
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/**
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* Create a new image, empty.
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*
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* The image will be owned by you and should be unref() when no more needed.
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*
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* @param name
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* Name of the image. This will be used as volset_id and volume_id.
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* @param image
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* Location where the image pointer will be stored.
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* @return
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* 1 sucess, < 0 error
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*/
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int iso_image_new(const char *name, IsoImage **image)
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{
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int res;
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IsoImage *img;
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if (image == NULL) {
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return ISO_NULL_POINTER;
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}
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img = calloc(1, sizeof(IsoImage));
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if (img == NULL) {
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return ISO_MEM_ERROR;
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}
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/* fill image fields */
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res = iso_node_new_root(&img->root);
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if (res < 0) {
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free(img);
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return res;
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}
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img->refcount = 1;
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if (name != NULL) {
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img->volset_id = strdup(name);
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img->volume_id = strdup(name);
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}
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*image = img;
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return ISO_SUCCESS;
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}
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/**
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* Increments the reference counting of the given image.
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*/
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void iso_image_ref(IsoImage *image)
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{
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++image->refcount;
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}
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/**
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* Decrements the reference couting of the given image.
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* If it reaches 0, the image is free, together with its tree nodes (whether
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* their refcount reach 0 too, of course).
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*/
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void iso_image_unref(IsoImage *image)
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{
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if (--image->refcount == 0) {
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/* we need to free the image */
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iso_node_unref((IsoNode*)image->root);
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free(image->volset_id);
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free(image->volume_id);
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free(image->publisher_id);
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free(image->data_preparer_id);
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free(image->system_id);
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free(image->application_id);
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free(image->copyright_file_id);
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free(image->abstract_file_id);
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free(image->biblio_file_id);
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}
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}
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