1 /* $Id: eqn_term.c,v 1.8 2015/01/01 15:36:08 schwarze Exp $ */ 2 /* 3 * Copyright (c) 2011 Kristaps Dzonsons <kristaps@bsd.lv> 4 * Copyright (c) 2014, 2015 Ingo Schwarze <schwarze@openbsd.org> 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" 19 20 #include <sys/types.h> 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 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 39 static void eqn_box(struct termp *, const struct eqn_box *); 40 41 42 void 43 term_eqn(struct termp *p, const struct eqn *ep) 44 { 45 46 eqn_box(p, ep->root); 47 p->flags &= ~TERMP_NOSPACE; 48 } 49 50 static void 51 eqn_box(struct termp *p, const struct eqn_box *bp) 52 { 53 const struct eqn_box *child; 54 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) 64 term_fontpush(p, fontmap[(int)bp->font]); 65 66 if (bp->text != NULL) 67 term_word(p, bp->text); 68 69 if (bp->pos == EQNPOS_SQRT) { 70 term_word(p, "sqrt"); 71 p->flags |= TERMP_NOSPACE; 72 eqn_box(p, bp->first); 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; 82 if (child != NULL) { 83 eqn_box(p, child); 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 } 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 } 107 108 if (bp->font != EQNFONT_NONE) 109 term_fontpop(p); 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 } 127 } 128