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/* param_routines.c: Data structures for parameter lists.
This file is part of Omega,
which is based on the web2c distribution of TeX,
Copyright (c) 1994--2001 John Plaice and Yannis Haralambous
Omega 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.
Omega 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 Omega; if not, write to the Free Software Foundation, Inc.,
59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
*/
#include "cpascal.h"
#include "list_routines.h"
#include "manifests.h"
#include "header_routines.h"
#include "param_routines.h"
#include "print_routines.h"
#include "out_routines.h"
#include "error_routines.h"
#include "out_ofm.h"
#define PARAM_MIN 1
av_list param_list = NULL;
int param_max = PARAM_MIN-1;
int param_started = FALSE;
unsigned np=0;
void
init_parameters(void)
{
if (param_started==TRUE)
warning_0("FONTDIMEN previously defined; all old parameters ignored");
if (param_list!=NULL) {
av_list L1 = param_list, L2;
while (L1 != NULL) {
L2 = L1->ptr;
free(L1);
L1 = L2;
}
}
param_list = NULL;
param_max = PARAM_MIN-1;
np=param_max;
param_started = TRUE;
}
void
set_param_word(int index, int val)
{
av_list L1, L2;
if (index < PARAM_MIN) {
warning_0("PARAMETER index must be at least 1; ignored");
return;
}
L1 = param_list;
if (L1 == NULL) {
param_list = av_list1(index, val);
param_max = index;
np=param_max;
} else {
L2 = L1->ptr;
while ((L2 != NULL) && (lattr(L2) <= index)) {
L1 = L2;
L2 = L2->ptr;
}
if (index < lattr(L1)) {
param_list = av_list1(index, val);
param_list->ptr = L1;
} else if (index == lattr(L1)) {
warning_1("PARAMETER index (%d) previously defined; "
"old value ignored", index);
lval(L1) = val;
} else {
if (L2==NULL) {param_max=index; np=param_max;}
L2 = av_list1(index, val);
L2->ptr = L1->ptr;
L1->ptr = L2;
}
}
}
void
retrieve_parameters(unsigned char *table)
{
int value;
unsigned i;
unsigned np_prime = np;
param_list = NULL;
for (i=1; i<=np_prime; i++) {
value = ((table[4*i] & 0xff) << 24) |
((table[4*i+1] & 0xff) << 16) |
((table[4*i+2] & 0xff) << 8) |
(table[4*i+3] & 0xff);
if ((i<=7) | (value != 0)) {
set_param_word(i, value);
}
}
np = np_prime;
}
void
print_parameters(void)
{
av_list L = param_list;
print_font_dimension();
while (L != NULL) {
print_parameter(lattr(L), lval(L));
L = L->ptr;
}
right();
}
void
output_ofm_parameter(void)
{
unsigned i=1, j;
av_list L = param_list;
while(L != NULL) {
j=lattr(L);
while (i<j) {
output_ofm_one_parameter(i, 0);
i++;
}
output_ofm_one_parameter(i, lval(L));
L = L->ptr; i++;
}
}
void
output_ofm_one_parameter(unsigned i, fix param)
{
if (i==P_SLANT) out_ofm_4(param);
else out_ofm_scaled(param);
}
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