128 lines
3.5 KiB
C
128 lines
3.5 KiB
C
/* $Id: eqn_term.c,v 1.8 2015/01/01 15:36:08 schwarze Exp $ */
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/*
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* Copyright (c) 2011 Kristaps Dzonsons <kristaps@bsd.lv>
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* Copyright (c) 2014, 2015 Ingo Schwarze <schwarze@openbsd.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include "config.h"
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#include <sys/types.h>
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#include <assert.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "mandoc.h"
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#include "out.h"
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#include "term.h"
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static const enum termfont fontmap[EQNFONT__MAX] = {
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TERMFONT_NONE, /* EQNFONT_NONE */
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TERMFONT_NONE, /* EQNFONT_ROMAN */
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TERMFONT_BOLD, /* EQNFONT_BOLD */
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TERMFONT_BOLD, /* EQNFONT_FAT */
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TERMFONT_UNDER /* EQNFONT_ITALIC */
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};
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static void eqn_box(struct termp *, const struct eqn_box *);
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void
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term_eqn(struct termp *p, const struct eqn *ep)
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{
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eqn_box(p, ep->root);
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p->flags &= ~TERMP_NOSPACE;
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}
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static void
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eqn_box(struct termp *p, const struct eqn_box *bp)
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{
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const struct eqn_box *child;
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if (bp->type == EQN_LIST ||
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(bp->type == EQN_PILE && (bp->prev || bp->next)) ||
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(bp->parent != NULL && bp->parent->pos == EQNPOS_SQRT)) {
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if (bp->parent->type == EQN_SUBEXPR && bp->prev != NULL)
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p->flags |= TERMP_NOSPACE;
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term_word(p, bp->left != NULL ? bp->left : "(");
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p->flags |= TERMP_NOSPACE;
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}
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if (bp->font != EQNFONT_NONE)
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term_fontpush(p, fontmap[(int)bp->font]);
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if (bp->text != NULL)
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term_word(p, bp->text);
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if (bp->pos == EQNPOS_SQRT) {
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term_word(p, "sqrt");
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p->flags |= TERMP_NOSPACE;
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eqn_box(p, bp->first);
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} else if (bp->type == EQN_SUBEXPR) {
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child = bp->first;
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eqn_box(p, child);
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p->flags |= TERMP_NOSPACE;
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term_word(p, bp->pos == EQNPOS_OVER ? "/" :
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(bp->pos == EQNPOS_SUP ||
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bp->pos == EQNPOS_TO) ? "^" : "_");
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p->flags |= TERMP_NOSPACE;
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child = child->next;
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if (child != NULL) {
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eqn_box(p, child);
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if (bp->pos == EQNPOS_FROMTO ||
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bp->pos == EQNPOS_SUBSUP) {
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p->flags |= TERMP_NOSPACE;
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term_word(p, "^");
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p->flags |= TERMP_NOSPACE;
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child = child->next;
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if (child != NULL)
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eqn_box(p, child);
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}
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}
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} else {
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child = bp->first;
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if (bp->type == EQN_MATRIX && child->type == EQN_LIST)
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child = child->first;
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while (child != NULL) {
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eqn_box(p,
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bp->type == EQN_PILE &&
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child->type == EQN_LIST &&
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child->args == 1 ?
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child->first : child);
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child = child->next;
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}
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}
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if (bp->font != EQNFONT_NONE)
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term_fontpop(p);
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if (bp->type == EQN_LIST ||
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(bp->type == EQN_PILE && (bp->prev || bp->next)) ||
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(bp->parent != NULL && bp->parent->pos == EQNPOS_SQRT)) {
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p->flags |= TERMP_NOSPACE;
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term_word(p, bp->right != NULL ? bp->right : ")");
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if (bp->parent->type == EQN_SUBEXPR && bp->next != NULL)
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p->flags |= TERMP_NOSPACE;
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}
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if (bp->top != NULL) {
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p->flags |= TERMP_NOSPACE;
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term_word(p, bp->top);
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}
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if (bp->bottom != NULL) {
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p->flags |= TERMP_NOSPACE;
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term_word(p, "_");
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}
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}
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