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Annotation of mandoc/eqn_term.c, Revision 1.8

1.8     ! schwarze    1: /*     $Id: eqn_term.c,v 1.7 2014/10/12 14:49:39 schwarze Exp $ */
1.1       kristaps    2: /*
                      3:  * Copyright (c) 2011 Kristaps Dzonsons <kristaps@bsd.lv>
1.8     ! schwarze    4:  * Copyright (c) 2014, 2015 Ingo Schwarze <schwarze@openbsd.org>
1.1       kristaps    5:  *
                      6:  * Permission to use, copy, modify, and distribute this software for any
                      7:  * purpose with or without fee is hereby granted, provided that the above
                      8:  * copyright notice and this permission notice appear in all copies.
                      9:  *
                     10:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
                     11:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
                     12:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
                     13:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
                     14:  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
                     15:  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
                     16:  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
                     17:  */
                     18: #include "config.h"
1.6       schwarze   19:
                     20: #include <sys/types.h>
1.1       kristaps   21:
                     22: #include <assert.h>
                     23: #include <stdio.h>
                     24: #include <stdlib.h>
                     25: #include <string.h>
                     26:
                     27: #include "mandoc.h"
                     28: #include "out.h"
                     29: #include "term.h"
                     30:
1.4       kristaps   31: static const enum termfont fontmap[EQNFONT__MAX] = {
                     32:        TERMFONT_NONE, /* EQNFONT_NONE */
                     33:        TERMFONT_NONE, /* EQNFONT_ROMAN */
                     34:        TERMFONT_BOLD, /* EQNFONT_BOLD */
                     35:        TERMFONT_BOLD, /* EQNFONT_FAT */
                     36:        TERMFONT_UNDER /* EQNFONT_ITALIC */
                     37: };
                     38:
1.3       kristaps   39: static void    eqn_box(struct termp *, const struct eqn_box *);
1.1       kristaps   40:
1.5       schwarze   41:
1.1       kristaps   42: void
                     43: term_eqn(struct termp *p, const struct eqn *ep)
                     44: {
                     45:
                     46:        eqn_box(p, ep->root);
1.7       schwarze   47:        p->flags &= ~TERMP_NOSPACE;
1.1       kristaps   48: }
                     49:
                     50: static void
                     51: eqn_box(struct termp *p, const struct eqn_box *bp)
                     52: {
1.7       schwarze   53:        const struct eqn_box *child;
1.1       kristaps   54:
1.7       schwarze   55:        if (bp->type == EQN_LIST ||
                     56:            (bp->type == EQN_PILE && (bp->prev || bp->next)) ||
                     57:            (bp->parent != NULL && bp->parent->pos == EQNPOS_SQRT)) {
                     58:                if (bp->parent->type == EQN_SUBEXPR && bp->prev != NULL)
                     59:                        p->flags |= TERMP_NOSPACE;
                     60:                term_word(p, bp->left != NULL ? bp->left : "(");
                     61:                p->flags |= TERMP_NOSPACE;
                     62:        }
                     63:        if (bp->font != EQNFONT_NONE)
1.4       kristaps   64:                term_fontpush(p, fontmap[(int)bp->font]);
                     65:
1.7       schwarze   66:        if (bp->text != NULL)
1.4       kristaps   67:                term_word(p, bp->text);
1.1       kristaps   68:
1.7       schwarze   69:        if (bp->pos == EQNPOS_SQRT) {
                     70:                term_word(p, "sqrt");
                     71:                p->flags |= TERMP_NOSPACE;
1.1       kristaps   72:                eqn_box(p, bp->first);
1.7       schwarze   73:        } else if (bp->type == EQN_SUBEXPR) {
                     74:                child = bp->first;
                     75:                eqn_box(p, child);
                     76:                p->flags |= TERMP_NOSPACE;
                     77:                term_word(p, bp->pos == EQNPOS_OVER ? "/" :
                     78:                    (bp->pos == EQNPOS_SUP ||
                     79:                     bp->pos == EQNPOS_TO) ? "^" : "_");
                     80:                p->flags |= TERMP_NOSPACE;
                     81:                child = child->next;
1.8     ! schwarze   82:                if (child != NULL) {
1.7       schwarze   83:                        eqn_box(p, child);
1.8     ! schwarze   84:                        if (bp->pos == EQNPOS_FROMTO ||
        !            85:                            bp->pos == EQNPOS_SUBSUP) {
        !            86:                                p->flags |= TERMP_NOSPACE;
        !            87:                                term_word(p, "^");
        !            88:                                p->flags |= TERMP_NOSPACE;
        !            89:                                child = child->next;
        !            90:                                if (child != NULL)
        !            91:                                        eqn_box(p, child);
        !            92:                        }
1.7       schwarze   93:                }
                     94:        } else {
                     95:                child = bp->first;
                     96:                if (bp->type == EQN_MATRIX && child->type == EQN_LIST)
                     97:                        child = child->first;
                     98:                while (child != NULL) {
                     99:                        eqn_box(p,
                    100:                            bp->type == EQN_PILE &&
                    101:                            child->type == EQN_LIST &&
                    102:                            child->args == 1 ?
                    103:                            child->first : child);
                    104:                        child = child->next;
                    105:                }
                    106:        }
1.1       kristaps  107:
1.7       schwarze  108:        if (bp->font != EQNFONT_NONE)
1.4       kristaps  109:                term_fontpop(p);
1.7       schwarze  110:        if (bp->type == EQN_LIST ||
                    111:            (bp->type == EQN_PILE && (bp->prev || bp->next)) ||
                    112:            (bp->parent != NULL && bp->parent->pos == EQNPOS_SQRT)) {
                    113:                p->flags |= TERMP_NOSPACE;
                    114:                term_word(p, bp->right != NULL ? bp->right : ")");
                    115:                if (bp->parent->type == EQN_SUBEXPR && bp->next != NULL)
                    116:                        p->flags |= TERMP_NOSPACE;
                    117:        }
                    118:
                    119:        if (bp->top != NULL) {
                    120:                p->flags |= TERMP_NOSPACE;
                    121:                term_word(p, bp->top);
                    122:        }
                    123:        if (bp->bottom != NULL) {
                    124:                p->flags |= TERMP_NOSPACE;
                    125:                term_word(p, "_");
                    126:        }
1.1       kristaps  127: }