object_ptr.c

Go to the documentation of this file.

#include "object_ptr.h"


DxfObjectPtr *
dxf_object_ptr_new ()
{
#if DEBUG
        DXF_DEBUG_BEGIN
#endif
        DxfObjectPtr *object_ptr = NULL;
        size_t size;

        size = sizeof (DxfObjectPtr);
        /* avoid malloc of 0 bytes */
        if (size == 0) size = 1;
        if ((object_ptr = malloc (size)) == NULL)
        {
                fprintf (stderr,
                  (_("Error in %s () could not allocate memory for a DxfObjectPtr struct.\n")),
                  __FUNCTION__);
                object_ptr = NULL;
        }
        else
        {
                memset (object_ptr, 0, size);
        }
#if DEBUG
        DXF_DEBUG_END
#endif
        return (object_ptr);
}


DxfObjectPtr *
dxf_object_ptr_init
(
        DxfObjectPtr *object_ptr
)
{
#if DEBUG
        DXF_DEBUG_BEGIN
#endif
        /* Do some basic checks. */
        if (object_ptr == NULL)
        {
                fprintf (stderr,
                  (_("Warning in %s () a NULL pointer was passed.\n")),
                  __FUNCTION__);
                object_ptr = dxf_object_ptr_new ();
        }
        if (object_ptr == NULL)
        {
                fprintf (stderr,
                  (_("Error in %s () could not allocate memory for a DxfObjectPtr struct.\n")),
                  __FUNCTION__);
                return (NULL);
        }
        object_ptr->id_code = 0;
        object_ptr->dictionary_owner_soft = strdup ("");
        object_ptr->dictionary_owner_hard = strdup ("");
        object_ptr->xdata->value = NULL;
        object_ptr->xdata->length = 0;
        object_ptr->xdata->next = NULL;
        object_ptr->next = NULL;
#if DEBUG
        DXF_DEBUG_END
#endif
        return (object_ptr);
}


DxfObjectPtr *
dxf_object_ptr_read
(
        DxfFile *fp,
        DxfObjectPtr *object_ptr
)
{
#if DEBUG
        DXF_DEBUG_BEGIN
#endif
        char *temp_string = NULL;

        /* Do some basic checks. */
        if (fp == NULL)
        {
                fprintf (stderr,
                  (_("Error in %s () a NULL file pointer was passed.\n")),
                  __FUNCTION__);
                /* Clean up. */
                free (temp_string);
                return (NULL);
        }
        if (fp->acad_version_number < AutoCAD_14)
        {
                fprintf (stderr,
                  (_("Warning in %s () illegal DXF version for this entity.\n")),
                  __FUNCTION__);
        }
        if (object_ptr == NULL)
        {
                fprintf (stderr,
                  (_("Warning in %s () a NULL pointer was passed.\n")),
                  __FUNCTION__);
                object_ptr = dxf_object_ptr_new ();
                object_ptr = dxf_object_ptr_init (object_ptr);
        }
        (fp->line_number)++;
        fscanf (fp->fp, "%[^\n]", temp_string);
        while (strcmp (temp_string, "0") != 0)
        {
                if (ferror (fp->fp))
                {
                        fprintf (stderr,
                          (_("Error in %s () while reading from: %s in line: %d.\n")),
                          __FUNCTION__, fp->filename, fp->line_number);
                        /* Clean up. */
                        free (temp_string);
                        fclose (fp->fp);
                        return (NULL);
                }
                if (strcmp (temp_string, "5") == 0)
                {
                        /* Now follows a string containing a sequential
                         * id number. */
                        (fp->line_number)++;
                        fscanf (fp->fp, "%x\n", &object_ptr->id_code);
                }
                else if (strcmp (temp_string, "330") == 0)
                {
                        /* Now follows a string containing Soft-pointer
                         * ID/handle to owner dictionary. */
                        (fp->line_number)++;
                        fscanf (fp->fp, "%s\n", object_ptr->dictionary_owner_soft);
                }
                else if (strcmp (temp_string, "360") == 0)
                {
                        /* Now follows a string containing Hard owner
                         * ID/handle to owner dictionary. */
                        (fp->line_number)++;
                        fscanf (fp->fp, "%s\n", object_ptr->dictionary_owner_hard);
                }
                else if (strcmp (temp_string, "999") == 0)
                {
                        /* Now follows a string containing a comment. */
                        (fp->line_number)++;
                        fscanf (fp->fp, "%s\n", temp_string);
                        fprintf (stdout, (_("DXF comment: %s\n")), temp_string);
                }
                else if (strcmp (temp_string, "1001") == 0)
                {
                        /* Now follows a string containing extended data. */
                        (fp->line_number)++;
                        fscanf (fp->fp, "%s\n", object_ptr->xdata->value);
                        object_ptr->xdata->length = strlen (object_ptr->xdata->value);
                }
                else
                {
                        fprintf (stderr,
                          (_("Warning in %s () unknown string tag found while reading from: %s in line: %d.\n")),
                          __FUNCTION__, fp->filename, fp->line_number);
                }
        }
        /* Clean up. */
        free (temp_string);
#if DEBUG
        DXF_DEBUG_END
#endif
        return (object_ptr);
}


int
dxf_object_ptr_write
(
        DxfFile *fp,
        DxfObjectPtr *object_ptr
)
{
#if DEBUG
        DXF_DEBUG_BEGIN
#endif
        char *dxf_entity_name = strdup ("OBJECT_PTR");

        /* Do some basic checks. */
        if (fp == NULL)
        {
                fprintf (stderr,
                  (_("Error in %s () a NULL file pointer was passed.\n")),
                  __FUNCTION__);
                /* Clean up. */
                free (dxf_entity_name);
                return (EXIT_FAILURE);
        }
        if (object_ptr == NULL)
        {
                fprintf (stderr,
                  (_("Error in %s () a NULL pointer was passed.\n")),
                  __FUNCTION__);
                /* Clean up. */
                free (dxf_entity_name);
                return (EXIT_FAILURE);
        }
        if (fp->acad_version_number < AutoCAD_14)
        {
                fprintf (stderr,
                  (_("Warning in %s () illegal DXF version for this %s entity with id-code: %x.\n")),
                  __FUNCTION__, dxf_entity_name, object_ptr->id_code);
        }
        /* Start writing output. */
        fprintf (fp->fp, "  0\n%s\n", dxf_entity_name);
        if (object_ptr->id_code != -1)
        {
                fprintf (fp->fp, "  5\n%x\n", object_ptr->id_code);
        }
        if ((strcmp (object_ptr->dictionary_owner_soft, "") != 0)
          && (fp->acad_version_number >= AutoCAD_14))
        {
                fprintf (fp->fp, "102\n{ACAD_REACTORS\n");
                fprintf (fp->fp, "330\n%s\n", object_ptr->dictionary_owner_soft);
                fprintf (fp->fp, "102\n}\n");
        }
        if ((strcmp (object_ptr->dictionary_owner_hard, "") != 0)
          && (fp->acad_version_number >= AutoCAD_14))
        {
                fprintf (fp->fp, "102\n{ACAD_XDICTIONARY\n");
                fprintf (fp->fp, "360\n%s\n", object_ptr->dictionary_owner_hard);
                fprintf (fp->fp, "102\n}\n");
        }
        while (object_ptr->xdata->value != NULL)
        {
                fprintf (fp->fp, "1001\n%s\n", object_ptr->xdata->value);
        }
        /* Clean up. */
        free (dxf_entity_name);
#if DEBUG
        DXF_DEBUG_END
#endif
        return (EXIT_SUCCESS);
}


int
dxf_object_ptr_free
(
        DxfObjectPtr *object_ptr
)
{
#if DEBUG
        DXF_DEBUG_BEGIN
#endif
        struct DxfChar *iter = NULL;

        /* Do some basic checks. */
        if (object_ptr == NULL)
        {
                fprintf (stderr,
                  (_("Error in %s () a NULL pointer was passed.\n")),
                  __FUNCTION__);
                return (EXIT_FAILURE);
        }
        if (object_ptr->next != NULL)
        {
                fprintf (stderr,
                  (_("Error in %s () pointer to next was not NULL.\n")),
                  __FUNCTION__);
                return (EXIT_FAILURE);
        }
        free (object_ptr->dictionary_owner_soft);
        free (object_ptr->dictionary_owner_hard);
        while (object_ptr->xdata->value != NULL)
        {
                iter = (struct DxfChar *) object_ptr->xdata->next;
                free (object_ptr->xdata->value);
                free (object_ptr->xdata);
                if (iter != NULL)
                {
                        object_ptr->xdata = (DxfChar *) iter;
                }
        }
        free (object_ptr);
        free (iter);
        object_ptr = NULL;
        iter = NULL;
#if DEBUG
        DXF_DEBUG_END
#endif
        return (EXIT_SUCCESS);
}


void
dxf_object_ptr_free_chain
(
        DxfObjectPtr *objectptrs
)
{
#ifdef DEBUG
        DXF_DEBUG_BEGIN
#endif
        if (objectptrs == NULL)
        {
                fprintf (stderr,
                  (_("Warning in %s () a NULL pointer was passed.\n")),
                  __FUNCTION__);
        }
        while (objectptrs != NULL)
        {
                struct DxfObjectPtr *iter = objectptrs->next;
                dxf_object_ptr_free (objectptrs);
                objectptrs = (DxfObjectPtr *) iter;
        }
#if DEBUG
        DXF_DEBUG_END
#endif
}


int
dxf_object_ptr_get_id_code
(
        DxfObjectPtr *object_ptr
)
{
#if DEBUG
        DXF_DEBUG_BEGIN
#endif
        /* Do some basic checks. */
        if (object_ptr == NULL)
        {
                fprintf (stderr,
                  (_("Error in %s () a NULL pointer was passed.\n")),
                  __FUNCTION__);
                return (EXIT_FAILURE);
        }
        if (object_ptr->id_code < 0)
        {
                fprintf (stderr,
                  (_("Error in %s () a negative value was found.\n")),
                  __FUNCTION__);
                return (EXIT_FAILURE);
        }
#if DEBUG
        DXF_DEBUG_END
#endif
        return (object_ptr->id_code);
}


DxfObjectPtr *
dxf_object_ptr_set_id_code
(
        DxfObjectPtr *object_ptr,
        int id_code
)
{
#if DEBUG
        DXF_DEBUG_BEGIN
#endif
        /* Do some basic checks. */
        if (object_ptr == NULL)
        {
                fprintf (stderr,
                  (_("Error in %s () a NULL pointer was passed.\n")),
                  __FUNCTION__);
                return (NULL);
        }
        if (id_code < 0)
        {
                fprintf (stderr,
                  (_("Error in %s () a negative value was passed.\n")),
                  __FUNCTION__);
                return (NULL);
        }
        object_ptr->id_code = id_code;
#if DEBUG
        DXF_DEBUG_END
#endif
        return (object_ptr);
}


char *
dxf_object_ptr_get_dictionary_owner_soft
(
        DxfObjectPtr *object_ptr
)
{
#if DEBUG
        DXF_DEBUG_BEGIN
#endif
        /* Do some basic checks. */
        if (object_ptr == NULL)
        {
                fprintf (stderr,
                  (_("Error in %s () a NULL pointer was passed.\n")),
                  __FUNCTION__);
                return (NULL);
        }
        if (object_ptr->dictionary_owner_soft ==  NULL)
        {
                fprintf (stderr,
                  (_("Error in %s () a NULL pointer was found.\n")),
                  __FUNCTION__);
                return (NULL);
        }
#if DEBUG
        DXF_DEBUG_END
#endif
        return (strdup (object_ptr->dictionary_owner_soft));
}


DxfObjectPtr *
dxf_object_ptr_set_dictionary_owner_soft
(
        DxfObjectPtr *object_ptr,
        char *dictionary_owner_soft
)
{
#if DEBUG
        DXF_DEBUG_BEGIN
#endif
        /* Do some basic checks. */
        if (object_ptr == NULL)
        {
                fprintf (stderr,
                  (_("Error in %s () a NULL pointer was passed.\n")),
                  __FUNCTION__);
                return (NULL);
        }
        if (dictionary_owner_soft == NULL)
        {
                fprintf (stderr,
                  (_("Error in %s () a NULL pointer was passed.\n")),
                  __FUNCTION__);
                return (NULL);
        }
        object_ptr->dictionary_owner_soft = strdup (dictionary_owner_soft);
#if DEBUG
        DXF_DEBUG_END
#endif
        return (object_ptr);
}


char *
dxf_object_ptr_get_dictionary_owner_hard
(
        DxfObjectPtr *object_ptr
)
{
#if DEBUG
        DXF_DEBUG_BEGIN
#endif
        /* Do some basic checks. */
        if (object_ptr == NULL)
        {
                fprintf (stderr,
                  (_("Error in %s () a NULL pointer was passed.\n")),
                  __FUNCTION__);
                return (NULL);
        }
        if (object_ptr->dictionary_owner_hard ==  NULL)
        {
                fprintf (stderr,
                  (_("Error in %s () a NULL pointer was found.\n")),
                  __FUNCTION__);
                return (NULL);
        }
#if DEBUG
        DXF_DEBUG_END
#endif
        return (strdup (object_ptr->dictionary_owner_hard));
}


DxfObjectPtr *
dxf_object_ptr_set_dictionary_owner_hard
(
        DxfObjectPtr *object_ptr,
        char *dictionary_owner_hard
)
{
#if DEBUG
        DXF_DEBUG_BEGIN
#endif
        /* Do some basic checks. */
        if (object_ptr == NULL)
        {
                fprintf (stderr,
                  (_("Error in %s () a NULL pointer was passed.\n")),
                  __FUNCTION__);
                return (NULL);
        }
        if (dictionary_owner_hard == NULL)
        {
                fprintf (stderr,
                  (_("Error in %s () a NULL pointer was passed.\n")),
                  __FUNCTION__);
                return (NULL);
        }
        object_ptr->dictionary_owner_hard = strdup (dictionary_owner_hard);
#if DEBUG
        DXF_DEBUG_END
#endif
        return (object_ptr);
}


DxfObjectPtr *
dxf_object_ptr_get_next
(
        DxfObjectPtr *object_ptr
)
{
#if DEBUG
        DXF_DEBUG_BEGIN
#endif
        /* Do some basic checks. */
        if (object_ptr == NULL)
        {
                fprintf (stderr,
                  (_("Error in %s () a NULL pointer was passed.\n")),
                  __FUNCTION__);
                return (NULL);
        }
        if (object_ptr->next == NULL)
        {
                fprintf (stderr,
                  (_("Error in %s () a NULL pointer was found.\n")),
                  __FUNCTION__);
                return (NULL);
        }
#if DEBUG
        DXF_DEBUG_END
#endif
        return ((DxfObjectPtr *) object_ptr->next);
}


DxfObjectPtr *
dxf_object_ptr_set_next
(
        DxfObjectPtr *object_ptr,
        DxfObjectPtr *next
)
{
#if DEBUG
        DXF_DEBUG_BEGIN
#endif
        /* Do some basic checks. */
        if (object_ptr == NULL)
        {
                fprintf (stderr,
                  (_("Error in %s () a NULL pointer was passed.\n")),
                  __FUNCTION__);
                return (NULL);
        }
        if (next == NULL)
        {
                fprintf (stderr,
                  (_("Error in %s () a NULL pointer was passed.\n")),
                  __FUNCTION__);
                return (NULL);
        }
        object_ptr->next = (struct DxfObjectPtr *) next;
#if DEBUG
        DXF_DEBUG_END
#endif
        return (object_ptr);
}


DxfObjectPtr *
dxf_object_ptr_get_last
(
        DxfObjectPtr *object_ptr
)
{
#if DEBUG
        DXF_DEBUG_BEGIN
#endif
        /* Do some basic checks. */
        if (object_ptr == NULL)
        {
                fprintf (stderr,
                  (_("Error in %s () a NULL pointer was passed.\n")),
                  __FUNCTION__);
                return (NULL);
        }
        if (object_ptr->next == NULL)
        {
                fprintf (stderr,
                  (_("Warning in %s () a NULL pointer was found.\n")),
                  __FUNCTION__);
                return ((DxfObjectPtr *) object_ptr);
        }
        DxfObjectPtr *iter = (DxfObjectPtr *) object_ptr->next;
        while (iter->next != NULL)
        {
                iter = (DxfObjectPtr *) iter->next;
        }
#if DEBUG
        DXF_DEBUG_END
#endif
        return ((DxfObjectPtr *) iter);
}


/* EOF*/