/* extra_routines.c: Tables for glues, rules, penalties, etc.

This file is part of the Omega project, which
is based on the web2c distribution of TeX.

Copyright (C) 2000 John Plaice and Yannis Haralambous

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.

This library 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
Library General Public License for more details.

You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */

#include "cpascal.h"
#include "manifests.h"
#include "list_routines.h"
#include "extra_routines.h"
#include "header_routines.h"

#define MAX_EXTRA_TABLES 16
#define MAX_TABLE_ENTRIES 256

unsigned *ivalue_tables[MAX_EXTRA_TABLES];
unsigned *penalty_tables[MAX_EXTRA_TABLES];
fix      *fvalue_tables[MAX_EXTRA_TABLES];
fix      *mvalue_tables[MAX_EXTRA_TABLES];
rule     *rule_tables[MAX_EXTRA_TABLES];
glue     *glue_tables[MAX_EXTRA_TABLES];

unsigned max_ivalue_entry[MAX_EXTRA_TABLES];
unsigned max_penalty_entry[MAX_EXTRA_TABLES];
unsigned max_fvalue_entry[MAX_EXTRA_TABLES];
unsigned max_mvalue_entry[MAX_EXTRA_TABLES];
unsigned max_rule_entry[MAX_EXTRA_TABLES];
unsigned max_glue_entry[MAX_EXTRA_TABLES];

unsigned no_ivalue_tables = 0;
unsigned no_penalty_tables = 0;
unsigned no_fvalue_tables = 0;
unsigned no_mvalue_tables = 0;
unsigned no_rule_tables = 0;
unsigned no_glue_tables = 0;

unsigned *cur_ivalue_table;
unsigned *cur_penalty_table;
fix      *cur_mvalue_table;
fix      *cur_fvalue_table;
rule     *cur_rule_table;
glue     *cur_glue_table;

unsigned cur_ivalue_table_index;
unsigned cur_penalty_table_index;
unsigned cur_mvalue_table_index;
unsigned cur_fvalue_table_index;
unsigned cur_rule_table_index;
unsigned cur_glue_table_index;

unsigned *cur_ivalue_entry;
unsigned *cur_penalty_entry;
fix      *cur_mvalue_entry;
fix      *cur_fvalue_entry;
rule     *cur_rule_entry;
glue     *cur_glue_entry;

unsigned nki=0;
unsigned nwi=0;
unsigned nkp=0;
unsigned nwp=0;
unsigned nkm=0;
unsigned nwm=0;
unsigned nkf=0;
unsigned nwf=0;
unsigned nkr=0;
unsigned nwr=0;
unsigned nkg=0;
unsigned nwg=0;

void
compute_ofm_extra_stuff(void)
{
    unsigned i=0;

    if (ofm_level >= OFM_LEVEL1) {
        nki = no_ivalue_tables;
        nkp = no_penalty_tables;
        nkm = no_mvalue_tables;
        nkf = no_fvalue_tables;
        nkr = no_rule_tables;
        nkg = no_glue_tables;
        for (i=0; i<nki; i++) {
            nwi += max_ivalue_entry[i];
        }
        for (i=0; i<nkp; i++) {
            nwp += max_penalty_entry[i];
        }
        for (i=0; i<nkm; i++) {
            nwm += max_mvalue_entry[i];
        }
        for (i=0; i<nkf; i++) {
            nwf += max_fvalue_entry[i];
        }
        for (i=0; i<nkr; i++) {
            nwr += 3 * max_rule_entry[i];
        }
        for (i=0; i<nkg; i++) {
            nwg += 4 * max_glue_entry[i];
        }
    }
}

void
output_ofm_extra_stuff(void)
{
    if (ofm_level >= OFM_LEVEL1) {
        fatal_error_0("OFM level 1 not currently supported");
    }
}

void
init_all_tables(void)
{
     unsigned i=0;

     for (i=0; i<MAX_EXTRA_TABLES; i++) {
         ivalue_tables[i] = NULL;
         penalty_tables[i] = NULL;
         fvalue_tables[i] = NULL;
         mvalue_tables[i] = NULL;
         rule_tables[i] = NULL;
         glue_tables[i] = NULL;
     }
}

void
init_font_ivalue(unsigned tab)
{
     unsigned j;

     if (tab>=MAX_EXTRA_TABLES)
         internal_error_1("init_font_ivalue (tab=%d)", tab);
     if (ivalue_tables[tab] != NULL) {
         warning_1("IVALUE table (D %d) previously defined; "
                   "old value ignored", tab);
         cur_ivalue_table = ivalue_tables[tab];
         for (j=0; j<MAX_TABLE_ENTRIES; j++) {
              cur_ivalue_table[j] = 0;
         }
     } else {
         no_ivalue_tables++;
         ivalue_tables[tab] =
             (unsigned *) xmalloc(MAX_TABLE_ENTRIES*sizeof(unsigned));
         cur_ivalue_table = ivalue_tables[tab];
     }
     max_ivalue_entry[tab] = 0;
}

void
init_font_penalty(unsigned tab)
{
     unsigned j;

     if (tab>=MAX_EXTRA_TABLES)
         internal_error_1("init_font_penalty (tab=%d)", tab);
     if (penalty_tables[tab] != NULL) {
         warning_1("IVALUE table (D %d) previously defined; "
                   "old value ignored", tab);
         cur_penalty_table = ivalue_tables[tab];
         for (j=0; j<MAX_TABLE_ENTRIES; j++) {
              cur_penalty_table[j] = 0;
         }
     } else {
         no_penalty_tables++;
         penalty_tables[tab] =
             (unsigned *) xmalloc(MAX_TABLE_ENTRIES*sizeof(unsigned));
         cur_penalty_table = ivalue_tables[tab];
     }
     max_penalty_entry[tab] = 0;
}

void
init_font_mvalue(unsigned tab)
{
     unsigned j;

     if (tab>=MAX_EXTRA_TABLES)
         internal_error_1("init_font_mvalue (tab=%d)", tab);
     if (mvalue_tables[tab] != NULL) {
         warning_1("MVALUE table (D %d) previously defined; "
                   "old value ignored", tab);
         cur_mvalue_table = mvalue_tables[tab];
         for (j=0; j<MAX_TABLE_ENTRIES; j++) {
              cur_mvalue_table[j] = 0;
         }
     } else {
         no_mvalue_tables++;
         mvalue_tables[tab] =
             (unsigned *) xmalloc(MAX_TABLE_ENTRIES*sizeof(unsigned));
         cur_mvalue_table = mvalue_tables[tab];
     }
     max_mvalue_entry[tab] = 0;
}

void
init_font_fvalue(unsigned tab)
{
     unsigned j;

     if (tab>=MAX_EXTRA_TABLES)
         internal_error_1("init_font_fvalue (tab=%d)", tab);
     if (fvalue_tables[tab] != NULL) {
         warning_1("FVALUE table (D %d) previously defined; "
                   "old value ignored", tab);
         cur_fvalue_table = fvalue_tables[tab];
         for (j=0; j<MAX_TABLE_ENTRIES; j++) {
              cur_fvalue_table[j] = 0;
         }
     } else {
         no_fvalue_tables++;
         fvalue_tables[tab] =
             (unsigned *) xmalloc(MAX_TABLE_ENTRIES*sizeof(unsigned));
         cur_fvalue_table = fvalue_tables[tab];
     }
     max_fvalue_entry[tab] = 0;
}

void
init_font_rule(unsigned tab)
{
     unsigned j;

     if (tab>=MAX_EXTRA_TABLES)
         internal_error_1("init_font_rule (tab=%d)", tab);
     if (rule_tables[tab] != NULL) {
         warning_1("RULE table (D %d) previously defined; "
                   "old value ignored", tab);
         cur_rule_table = rule_tables[tab];
         for (j=0; j<MAX_TABLE_ENTRIES; j++) {
              cur_rule_table[j].rule_wd = 0;
              cur_rule_table[j].rule_dp = 0;
              cur_rule_table[j].rule_ht = 0;
         }
     } else {
         no_rule_tables++;
         rule_tables[tab] =
             (rule *) xmalloc(MAX_TABLE_ENTRIES*sizeof(rule));
         cur_rule_table = rule_tables[tab];
     }
     max_rule_entry[tab] = 0;
}

void
init_font_glue(unsigned tab)
{
     unsigned j;

     if (tab>=MAX_EXTRA_TABLES)
         internal_error_1("init_font_glue (tab=%d)", tab);
     if (glue_tables[tab] != NULL) {
         warning_1("GLUE table (D %d) previously defined; "
                   "old value ignored", tab);
         cur_glue_table = glue_tables[tab];
         for (j=0; j<MAX_TABLE_ENTRIES; j++) {
              cur_glue_table[j].glue_width = 0;
              cur_glue_table[j].glue_stretch = 0;
              cur_glue_table[j].glue_shrink = 0;
              cur_glue_table[j].glue_stretch_order = 0;
              cur_glue_table[j].glue_shrink_order = 0;
              cur_glue_table[j].glue_type = 0;
              cur_glue_table[j].glue_arg_type = GLUEARG_NONE;
              cur_glue_table[j].glue_arg1 = 0;
              cur_glue_table[j].glue_arg2 = 0;
         }
     } else {
         no_glue_tables++;
         glue_tables[tab] =
             (glue *) xmalloc(MAX_TABLE_ENTRIES*sizeof(glue));
         cur_glue_table = glue_tables[tab];
     }
     max_glue_entry[tab] = 0;
}


void
init_font_ivalue_entry(unsigned index)
{
     if (index>=MAX_TABLE_ENTRIES)
         internal_error_1("init_font_ivalue_entry (index=%d)", index);
     cur_ivalue_entry = &cur_ivalue_table[index];
     if (max_ivalue_entry[cur_ivalue_table_index]<index)
         max_ivalue_entry[cur_ivalue_table_index] = index;
}

void
init_font_penalty_entry(unsigned index)
{
     if (index>=MAX_TABLE_ENTRIES)
         internal_error_1("init_font_penalty_entry (index=%d)", index);
     cur_penalty_entry = &cur_penalty_table[index];
     if (max_penalty_entry[cur_penalty_table_index]<index)
         max_penalty_entry[cur_penalty_table_index] = index;
}

void
init_font_mvalue_entry(unsigned index)
{
     if (index>=MAX_TABLE_ENTRIES)
         internal_error_1("init_font_mvalue_entry (index=%d)", index);
     cur_mvalue_entry = &cur_mvalue_table[index];
     if (max_mvalue_entry[cur_mvalue_table_index]<index)
         max_mvalue_entry[cur_mvalue_table_index] = index;
}

void
init_font_fvalue_entry(unsigned index)
{
     if (index>=MAX_TABLE_ENTRIES)
         internal_error_1("init_font_fvalue_entry (index=%d)", index);
     cur_fvalue_entry = &cur_fvalue_table[index];
     if (max_fvalue_entry[cur_fvalue_table_index]<index)
         max_fvalue_entry[cur_fvalue_table_index] = index;
}

void
init_font_rule_entry(unsigned index)
{
     if (index>=MAX_TABLE_ENTRIES)
         internal_error_1("init_font_rule_entry (index=%d)", index);
     cur_rule_entry = &cur_rule_table[index];
     if (max_rule_entry[cur_rule_table_index]<index)
         max_rule_entry[cur_rule_table_index] = index;
}

void
init_font_glue_entry(unsigned index)
{
     if (index>=MAX_TABLE_ENTRIES)
         internal_error_1("init_font_glue_entry (index=%d)", index);
     cur_glue_entry = &cur_glue_table[index];
     if (max_glue_entry[cur_glue_table_index]<index)
         max_glue_entry[cur_glue_table_index] = index;
}


void
set_font_ivalue_definition(unsigned val)
{
     *cur_ivalue_entry = val;
}

void
set_font_penalty_definition(unsigned val)
{
     *cur_penalty_entry = val;
}

void
set_font_mvalue_definition(fix fval)
{
     *cur_mvalue_entry = fval;
}

void
set_font_fvalue_definition(fix fval)
{
     *cur_fvalue_entry = fval;
}

void
set_font_rule_measure(unsigned measure, fix fval)
{
     switch (measure) {
         case RULE_WD: {
             cur_rule_entry->rule_wd = fval; break;
         }
         case RULE_HT: {
             cur_rule_entry->rule_ht = fval; break;
         }
         case RULE_DP: {
             cur_rule_entry->rule_dp = fval; break;
         }
         default: {
             internal_error_1("set_font_rule_measure (measure=%d)", measure);
         }
     }
}


void
set_font_glue_width(fix width)
{
     cur_glue_entry->glue_width = width;
}

void
set_font_glue_shrink_stretch(unsigned shrink_stretch,
                             fix width, unsigned order)
{
     switch (shrink_stretch) {
         case GLUE_SHRINK: {
             cur_glue_entry->glue_shrink = width; break;
             cur_glue_entry->glue_shrink_order = order; break;
         }
         case GLUE_STRETCH: {
             cur_glue_entry->glue_stretch_order = order; break;
         }
         default: {
             internal_error_1("set_font_rule_measure (shrink_stretch=%d)",
                              shrink_stretch);
         }
     }
}

void
set_font_glue_type(unsigned type)
{
     cur_glue_entry->glue_type = type;
}

void
set_font_glue_character(unsigned c)
{
    cur_glue_entry->glue_arg_type = GLUEARG_CHAR;
    cur_glue_entry->glue_arg1 = c;
}

void
set_font_glue_rule(unsigned rule_table, unsigned rule_index)
{
    cur_glue_entry->glue_arg_type = GLUEARG_RULE;
    cur_glue_entry->glue_arg1 = rule_table;
    cur_glue_entry->glue_arg2 = rule_index;
}

void
set_character_ivalue(unsigned table, unsigned index)
{
    fatal_error_0("CHARIVALUE not currently supported");
}

void
set_character_penalty(unsigned table, unsigned index)
{
    fatal_error_0("CHARPENALTY not currently supported");
}

void
set_character_mvalue(unsigned table, unsigned index)
{
    fatal_error_0("CHARMVALUE not currently supported");
}

void
set_character_fvalue(unsigned table, unsigned index)
{
    fatal_error_0("CHARFVALUE not currently supported");
}

void
set_character_rule(unsigned table, unsigned index)
{
    fatal_error_0("CHARRULE not currently supported");
}

void
set_character_glue(unsigned table, unsigned index)
{
    fatal_error_0("CHARGLUE not currently supported");
}
