/* out_routines.c: Low-level routines for outputting OPL and OVP files.

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 "list_routines.h"
#include "manifests.h"
#include "out_routines.h"
#include "error_routines.h"

/* Character measures */

string character_measures[] =
     { "CHARWD",      "CHARHT",         "CHARDP",        "CHARIC",
       "SECWD",       "SECHT",          "SECDP",         "SECIC",
       "PRIMTOPAXIS", "PRIMTOPAXISBIS", "PRIMBOTAXIS",   "PRIMBOTAXISBIS",
       "PRIMMIDHOR",  "PRIMMIDVERT",    "PRIMBASESLANT", NULL,
       "SECTOPAXIS",  "SECTOPAXISBIS",  "SECBOTAXIS",    "SECBOTAXISBIS",
       "SECMIDHOR",   "SECMIDVERT",     "SECBASESLANT",  NULL};

void
out_character_measure(unsigned measure)
{
    if ((measure < C_MIN) || (measure > C_MAX) ||
        (character_measures[measure]==NULL)) {
	internal_error_1("out_character_measure (measure=%d)", measure);
    }
    out(character_measures[measure]);
}

/* Extensible pieces */

string extensible_pieces[] =
     { "TOP", "MID", "BOT", "REP", NULL };

void
out_extensible_piece(unsigned piece)
{
    if ((piece < E_MIN) || (piece > E_MAX)) {
	internal_error_1("out_extensible_piece (piece=%d)", piece);
    }
    out(extensible_pieces[piece]);
}

/* Ligature commands */

string ligature_commands[] =
     { "LIG", "LIG/", "/LIG", "/LIG/", NULL,
       "LIG/>", "/LIG>", "/LIG/>", NULL, NULL,
       NULL, "/LIG/>>", NULL };

void
out_ligature_command(unsigned command)
{
    if ((command < L_MIN) || (command > L_MAX) ||
        (ligature_commands[command]==NULL)) {
	internal_error_1("out_ligature_command (command=%d)", command);
    }
    out(ligature_commands[command]);
}

/* Xerox faces */

string xerox_faces[] =
    { "MRR", "MIR", "BRR", "BIR", "LRR", "LIR",
      "MRC", "MIC", "BRC", "BIC", "LRC", "LIC",
      "MRE", "MIE", "BRE", "BIE", "LRE", "LIE", NULL };

void
print_xerox_face(int face)
{
    if ((face < F_MIN) || (face > F_MAX)) {
	internal_error_1("print_xerox_face (face=%d)", face);
    }
    out(xerox_faces[face]);
}

/* Named parameters */

string named_parameters[] =
    { NULL,      "SLANT",      "SPACE",  "STRETCH", "SHRINK",    "XHEIGHT",
      "QUAD",    "EXTRASPACE", "NUM1",   "NUM2",    "NUM3",      "DENOM1",
      "DENOM2",  "SUP1",       "SUP2",   "SUP3",    "SUB1",      "SUB2",
      "SUPDROP", "SUBDROP",    "DELIM1", "DELIM2",  "AXISHEIGHT", NULL };

void
out_named_parameter(unsigned parameter)
{
    if ((parameter < P_MIN) || (parameter > P_MAX)) {
	internal_error_1("out_named_parameter (parameter = %d)", parameter);
    }
    out(named_parameters[parameter]);
}

/* Named math parameters */

string named_math_parameters[] =
    { NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
      "DEFAULTRULETHICKNESS", "BIGOPSPACING1",
      "BIGOPSPACING2",        "BIGOPSPACING3",
      "BIGOPSPACING4",        "BIGOPSPACING5", NULL };

void
out_named_math_parameter(unsigned parameter)
{
    if ((parameter < P_MATH_MIN) || (parameter > P_MATH_MAX) ||
        (named_math_parameters[parameter]==NULL)) {
	internal_error_1("out_named_math_parameter (parameter=%d)", parameter);
    }
    out(named_math_parameters[parameter]);
}

/* Typesetting directions */

string type_directions[] =
     { "FONTDIR", "NATURALFONTDIR", NULL };

string actual_directions[] =
     { "TL", "LT", "TR", "RT", "LB", "BL", "BR", "RB", NULL };

void
out_type_direction(unsigned direction)
{
    if ((direction < DIR_MIN) || (direction > DIR_MAX)) {
	internal_error_1("out_type_direction (direction=%d)", direction);
    }
    out(type_directions[direction/8]); out(" ");
    out(actual_directions[direction%8]);
}

/* Kinds of accents */

string accent_kinds[] =
     { NULL, "TOPACCENT", "MIDACCENT", "BOTACCENT", NULL };

void
out_accent_kind(unsigned kind)
{
    if ((kind < ACC_TOP) || (kind > ACC_BOT)) {
	internal_error_1("out_accent_kind (kind=%d)", kind);
    }
    out(accent_kinds[kind]);
}

/* Move directions */

string move_directions[] =
     { "MOVERIGHT", "MOVELEFT", "MOVEUP", "MOVEDOWN", NULL };

void
out_move_direction(unsigned direction)
{
    if ((direction < M_MIN) || (direction > M_MAX)) {
	internal_error_1("out_move_direction (direction=%d)", direction);
    }
    out(move_directions[direction]);
}

/* Rule measures */

string rule_measures[] =
     { "RULEWD", "RULEHT", "RULEDP", NULL };

void
out_rule_measure(unsigned measure)
{
    if ((measure < RULE_MIN) || (measure > RULE_MAX)) {
	internal_error_1("out_rule_measure (measure=%d)", measure);
    }
    out(rule_measures[measure]);
}

/* Glue shrink or stretch */

string glue_shrink_stretch[] =
     { "GLUESHRINK", "GLUESTRETCH", NULL };

void
out_shrink_stretch(unsigned shrink_stretch)
{
    if ((shrink_stretch < GLUE_MIN) || (shrink_stretch > GLUE_MAX)) {
	internal_error_1("out_shrink_stretch (shrink_stretch=%d)",
                         shrink_stretch);
    }
    out(glue_shrink_stretch[shrink_stretch]);
}

/* Glue orders */

string glue_orders[] =
     { "UNIT", "FI", "FIL", "FILL", "FILLL", NULL };

void
out_glue_order(unsigned order)
{
    if ((order < O_MIN) || (order > O_MAX)) {
	internal_error_1("out_glue_order (order=%d)", order);
    }
    out(glue_orders[order]);
}

/* Glue kinds */

string glue_kinds[] =
     { "NORMAL", "ALEADERS", "CLEADERS", "ALEADERS", "XLEADERS", NULL };

void
out_glue_kind(unsigned kind)
{
    if ((kind < K_MIN) || (kind > K_MAX)) {
	internal_error_1("out_glue_kind (kind=%d)", kind);
    }
    out(glue_kinds[kind]);
}

unsigned parenthesis_level=0;
unsigned digits[12];

/* Basic routines used by everyone */

void
out_ln(void)
{
    unsigned i;
    out("\n");
    for (i = 0; i < parenthesis_level; i++) out("   ");
}

void
left(void)
{
    parenthesis_level++; out("(");
}

void
right(void)
{
    if (parenthesis_level==0) internal_error_0("right");
    parenthesis_level--; out(")"); out_ln();
}

void
out_char(unsigned val)
{
	out_int(val, 16);
}

void
out_int(unsigned val, unsigned base)
{
	register unsigned j=0, acc=val;
	if (val < 0) internal_error_1("out_int (val=%d)", val);
	if (base==16)      out("H ");
	else if (base==10) out("D ");
	else if (base==8)  out("O ");
	else internal_error_1("out_int (base=%d)", base);
	do {
		digits[j] = acc % base;
		j++;
		acc = acc / base;
	} while (acc > 0);
	out_digits(j);
}

void
out_fix(fix fval)
{
	register int a = (fval & 0xfff00000) >> 20, f = fval & 0xfffff, j=0;
	register int delta;

	out("R ");
	if (a>0x7ff) {
		out("-"); a = 0x1000 - a;
		if (f>0) {
			f = 0x100000 - f; a--;
		}
	}
	do {
		digits[j] = a % 10;
		j++;
		a = a / 10;
	} while (a > 0);
	out_digits(j);
	out(".");
	f = 10*f + 5; delta = 10;
	do {
		if (delta>0x100000) f = f + 0x80000 - (delta / 2);
		fprintf(stdout, "%c", (f / 0x100000) + '0');
		f = 10 * (f % 0x100000); delta = delta*10;
	} while (f>delta);
}

void
out_digits(unsigned counter)
{
	register unsigned j=counter, c;
	while (j>0) {
		c = digits[--j];
		if (c<10) fprintf(stdout, "%c", c+'0');
		else fprintf(stdout, "%c", c+'A'-10);
	}
}

void
out(string sval)
{
	fprintf(stdout, sval);
}
