131 lines
3.5 KiB
C
131 lines
3.5 KiB
C
/* $Id: eqn_term.c,v 1.9 2017/02/12 14:19:01 schwarze Exp $ */
|
|
/*
|
|
* Copyright (c) 2011 Kristaps Dzonsons <kristaps@bsd.lv>
|
|
* Copyright (c) 2014, 2015, 2017 Ingo Schwarze <schwarze@openbsd.org>
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
* ANY SPECIAL, DIRECT, 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.
|
|
*/
|
|
#include "config.h"
|
|
|
|
#include <sys/types.h>
|
|
|
|
#include <assert.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include "mandoc.h"
|
|
#include "out.h"
|
|
#include "term.h"
|
|
|
|
static const enum termfont fontmap[EQNFONT__MAX] = {
|
|
TERMFONT_NONE, /* EQNFONT_NONE */
|
|
TERMFONT_NONE, /* EQNFONT_ROMAN */
|
|
TERMFONT_BOLD, /* EQNFONT_BOLD */
|
|
TERMFONT_BOLD, /* EQNFONT_FAT */
|
|
TERMFONT_UNDER /* EQNFONT_ITALIC */
|
|
};
|
|
|
|
static void eqn_box(struct termp *, const struct eqn_box *);
|
|
|
|
|
|
void
|
|
term_eqn(struct termp *p, const struct eqn *ep)
|
|
{
|
|
|
|
eqn_box(p, ep->root);
|
|
p->flags &= ~TERMP_NOSPACE;
|
|
}
|
|
|
|
static void
|
|
eqn_box(struct termp *p, const struct eqn_box *bp)
|
|
{
|
|
const struct eqn_box *child;
|
|
|
|
if (bp->type == EQN_LIST ||
|
|
(bp->type == EQN_PILE && (bp->prev || bp->next)) ||
|
|
(bp->parent != NULL && bp->parent->pos == EQNPOS_SQRT)) {
|
|
if (bp->parent->type == EQN_SUBEXPR && bp->prev != NULL)
|
|
p->flags |= TERMP_NOSPACE;
|
|
term_word(p, bp->left != NULL ? bp->left : "(");
|
|
p->flags |= TERMP_NOSPACE;
|
|
}
|
|
if (bp->font != EQNFONT_NONE)
|
|
term_fontpush(p, fontmap[(int)bp->font]);
|
|
|
|
if (bp->text != NULL)
|
|
term_word(p, bp->text);
|
|
|
|
if (bp->pos == EQNPOS_SQRT) {
|
|
term_word(p, "sqrt");
|
|
if (bp->first != NULL) {
|
|
p->flags |= TERMP_NOSPACE;
|
|
eqn_box(p, bp->first);
|
|
}
|
|
} else if (bp->type == EQN_SUBEXPR) {
|
|
child = bp->first;
|
|
eqn_box(p, child);
|
|
p->flags |= TERMP_NOSPACE;
|
|
term_word(p, bp->pos == EQNPOS_OVER ? "/" :
|
|
(bp->pos == EQNPOS_SUP ||
|
|
bp->pos == EQNPOS_TO) ? "^" : "_");
|
|
p->flags |= TERMP_NOSPACE;
|
|
child = child->next;
|
|
if (child != NULL) {
|
|
eqn_box(p, child);
|
|
if (bp->pos == EQNPOS_FROMTO ||
|
|
bp->pos == EQNPOS_SUBSUP) {
|
|
p->flags |= TERMP_NOSPACE;
|
|
term_word(p, "^");
|
|
p->flags |= TERMP_NOSPACE;
|
|
child = child->next;
|
|
if (child != NULL)
|
|
eqn_box(p, child);
|
|
}
|
|
}
|
|
} else {
|
|
child = bp->first;
|
|
if (bp->type == EQN_MATRIX &&
|
|
child != NULL && child->type == EQN_LIST)
|
|
child = child->first;
|
|
while (child != NULL) {
|
|
eqn_box(p,
|
|
bp->type == EQN_PILE &&
|
|
child->type == EQN_LIST &&
|
|
child->args == 1 ?
|
|
child->first : child);
|
|
child = child->next;
|
|
}
|
|
}
|
|
|
|
if (bp->font != EQNFONT_NONE)
|
|
term_fontpop(p);
|
|
if (bp->type == EQN_LIST ||
|
|
(bp->type == EQN_PILE && (bp->prev || bp->next)) ||
|
|
(bp->parent != NULL && bp->parent->pos == EQNPOS_SQRT)) {
|
|
p->flags |= TERMP_NOSPACE;
|
|
term_word(p, bp->right != NULL ? bp->right : ")");
|
|
if (bp->parent->type == EQN_SUBEXPR && bp->next != NULL)
|
|
p->flags |= TERMP_NOSPACE;
|
|
}
|
|
|
|
if (bp->top != NULL) {
|
|
p->flags |= TERMP_NOSPACE;
|
|
term_word(p, bp->top);
|
|
}
|
|
if (bp->bottom != NULL) {
|
|
p->flags |= TERMP_NOSPACE;
|
|
term_word(p, "_");
|
|
}
|
|
}
|