/* $XConsortium: util.c,v 1.6 92/03/26 16:42:26 eswu Exp $ */
/* Copyright International Business Machines,Corp. 1991
 * All Rights Reserved
 *
 * License to use, copy, modify, and distribute this software
 * and its documentation for any purpose and without fee is
 * hereby granted, provided that the above copyright notice
 * appear in all copies and that both that copyright notice and
 * this permission notice appear in supporting documentation,
 * and that the name of IBM not be used in advertising or
 * publicity pertaining to distribution of the software without
 * specific, written prior permission.
 *
 * IBM PROVIDES THIS SOFTWARE "AS IS", WITHOUT ANY WARRANTIES
 * OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT
 * LIMITED TO ANY IMPLIED WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, AND NONINFRINGEMENT OF
 * THIRD PARTY RIGHTS.  THE ENTIRE RISK AS TO THE QUALITY AND
 * PERFORMANCE OF THE SOFTWARE, INCLUDING ANY DUTY TO SUPPORT
 * OR MAINTAIN, BELONGS TO THE LICENSEE.  SHOULD ANY PORTION OF
 * THE SOFTWARE PROVE DEFECTIVE, THE LICENSEE (NOT IBM) ASSUMES
 * THE ENTIRE COST OF ALL SERVICING, REPAIR AND CORRECTION.  IN
 * NO EVENT SHALL IBM BE LIABLE FOR ANY SPECIAL, INDIRECT OR
 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
 * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
 * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
 * SOFTWARE.
 */
/* Author: Katherine A. Hitchcock    IBM Almaden Research Laboratory */
 
#include "types.h"
#include <stdio.h>
#include "util.h"
#include "fontmisc.h"

static char *vm_base = NULL;     /* Start of virtual memory area */
       char *vm_next = NULL;     /* Pointer to first free byte */
       int32_t  vm_free = 0;     /* Count of free bytes */
       int32_t  vm_size = 0;     /* Total size of memory */

/*
 * Initialize memory.
 */

boolean vm_init(void)
{
  vm_next = vm_base = (char *) Xalloc(MAX_STRING_LEN);
 
  if (vm_base != NULL) {
    vm_free = MAX_STRING_LEN;
    vm_size = MAX_STRING_LEN;
    tokenMaxP = vm_next_byte() + MAX_STRING_LEN;
    return(TRUE);
  }
  else
    return(FALSE);
}
 
char *vm_alloc(unsigned int bytes)
{
  char *answer;
 
  /* Align returned bytes to 64-bit boundary */
  bytes = (bytes + 7) & ~7;
 
  /* take space from what is left otherwise allocate another CHUNK */
  if (bytes > vm_free)
    if (!vm_init()) return NULL;
  if (bytes <= vm_free) {
    answer = vm_next;
    vm_free -= bytes;
    vm_next += bytes;
    return answer;
  }
  else {
    printf("Trying to allocate %d bytes (%d maximum)\n", bytes, MAX_STRING_LEN);
    return NULL; 
  }
}

/*
 * Format an Integer object
 */
void objFormatInteger(psobj *objP, int value)
{
  if (objP != NULL) {
    objP->type         = OBJ_INTEGER;
    objP->len          = 0;
    objP->data.integer = value;
  }
}
 
/*
 * Format a Real object
 */
void objFormatReal(psobj *objP, float value)
{
  if (objP != NULL) {
    objP->type       = OBJ_REAL;
    objP->len        = 0;
    objP->data.real  = value;
  }
}
 
/*
 * Format a Boolean object
 */
void objFormatBoolean(psobj *objP, boolean value)
{
  if (objP != NULL) {
    objP->type         = OBJ_BOOLEAN;
    objP->len          = 0;
    objP->data.boolean = value;
  }
}
 
/*
 * Format an Encoding object
 */
void objFormatEncoding(psobj *objP, int length, psobj *valueP)
{
  if (objP != NULL) {
    objP->type        = OBJ_ENCODING;
    objP->len         = length;
    objP->data.arrayP = valueP;
  }
}
 
/*
 * Format an Array object
 */
void objFormatArray(psobj *objP, int length, psobj *valueP)
{
  if (objP != NULL) {
    objP->type        = OBJ_ARRAY;
    objP->len         = length;
    objP->data.arrayP = valueP;
  }
}
 
 
/*
 * Format a String object
 */
void objFormatString(psobj *objP, int length, char *valueP)
{
  if (objP != NULL) {
    objP->type         = OBJ_STRING;
    objP->len          = length;
    objP->data.valueP  = valueP;
  }
}
 
/*
 * Format a Name object
 */
void objFormatName(psobj *objP, int length, const char *valueP)
{
  if (objP != NULL) {
    objP->type         = OBJ_NAME;
    objP->len          = length;
    objP->data.nameP   = valueP;
  }
}
 
/*
 * Format a File object
 */
void objFormatFile(psobj *objP, FILE *valueP)
{
  if (objP != NULL) {
    objP->type         = OBJ_FILE;
    objP->len          = 0;
    objP->data.fileP   = valueP;
  }
}