1/* $Id: eqn_term.c,v 1.8 2015/01/01 15:36:08 schwarze Exp $ */
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1/* $Id: eqn_term.c,v 1.13 2017/07/08 14:51:04 schwarze Exp $ */ |
2/* 3 * Copyright (c) 2011 Kristaps Dzonsons <kristaps@bsd.lv>
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4 * Copyright (c) 2014, 2015 Ingo Schwarze
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4 * Copyright (c) 2014, 2015, 2017 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 31static 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 39static void eqn_box(struct termp *, const struct eqn_box *); 40 41 42void
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43term_eqn(struct termp *p, const struct eqn *ep)
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43term_eqn(struct termp *p, const struct eqn_box *bp) |
44{ 45
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46 eqn_box(p, ep->root);
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46 eqn_box(p, bp); |
47 p->flags &= ~TERMP_NOSPACE; 48} 49 50static void 51eqn_box(struct termp *p, const struct eqn_box *bp) 52{ 53 const struct eqn_box *child;
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54 int delim; |
55
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55 if (bp->type == EQN_LIST ||
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56 /* Delimiters around this box? */ 57 58 if ((bp->type == EQN_LIST && bp->expectargs > 1) || |
59 (bp->type == EQN_PILE && (bp->prev || bp->next)) ||
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57 (bp->parent != NULL && bp->parent->pos == EQNPOS_SQRT)) {
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60 (bp->parent != NULL && (bp->parent->pos == EQNPOS_SQRT || 61 /* Diacritic followed by ^ or _. */ 62 ((bp->top != NULL || bp->bottom != NULL) && 63 bp->parent->type == EQN_SUBEXPR && 64 bp->parent->pos != EQNPOS_OVER && bp->next != NULL) || 65 /* Nested over, sub, sup, from, to. */ 66 (bp->type == EQN_SUBEXPR && bp->pos != EQNPOS_SQRT && 67 ((bp->parent->type == EQN_LIST && bp->expectargs == 1) || 68 (bp->parent->type == EQN_SUBEXPR && 69 bp->pos != EQNPOS_SQRT)))))) { |
70 if (bp->parent->type == EQN_SUBEXPR && bp->prev != NULL) 71 p->flags |= TERMP_NOSPACE; 72 term_word(p, bp->left != NULL ? bp->left : "("); 73 p->flags |= TERMP_NOSPACE;
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62 }
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74 delim = 1; 75 } else 76 delim = 0; 77 78 /* Handle Fonts and text. */ 79 |
80 if (bp->font != EQNFONT_NONE) 81 term_fontpush(p, fontmap[(int)bp->font]); 82 83 if (bp->text != NULL) 84 term_word(p, bp->text); 85
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86 /* Special box types. */ 87 |
88 if (bp->pos == EQNPOS_SQRT) { 89 term_word(p, "sqrt");
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71 p->flags |= TERMP_NOSPACE;
72 eqn_box(p, bp->first);
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90 if (bp->first != NULL) { 91 p->flags |= TERMP_NOSPACE; 92 eqn_box(p, bp->first); 93 } |
94 } else if (bp->type == EQN_SUBEXPR) { 95 child = bp->first; 96 eqn_box(p, child); 97 p->flags |= TERMP_NOSPACE; 98 term_word(p, bp->pos == EQNPOS_OVER ? "/" : 99 (bp->pos == EQNPOS_SUP || 100 bp->pos == EQNPOS_TO) ? "^" : "_"); 101 p->flags |= TERMP_NOSPACE; 102 child = child->next; 103 if (child != NULL) { 104 eqn_box(p, child); 105 if (bp->pos == EQNPOS_FROMTO || 106 bp->pos == EQNPOS_SUBSUP) { 107 p->flags |= TERMP_NOSPACE; 108 term_word(p, "^"); 109 p->flags |= TERMP_NOSPACE; 110 child = child->next; 111 if (child != NULL) 112 eqn_box(p, child); 113 } 114 } 115 } else { 116 child = bp->first;
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96 if (bp->type == EQN_MATRIX && child->type == EQN_LIST)
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117 if (bp->type == EQN_MATRIX && 118 child != NULL && 119 child->type == EQN_LIST && 120 child->expectargs > 1) |
121 child = child->first; 122 while (child != NULL) { 123 eqn_box(p, 124 bp->type == EQN_PILE && 125 child->type == EQN_LIST &&
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126 child->expectargs > 1 && |
127 child->args == 1 ? 128 child->first : child); 129 child = child->next; 130 } 131 } 132
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133 /* Handle Fonts and diacritics. */ 134 |
135 if (bp->font != EQNFONT_NONE) 136 term_fontpop(p);
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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
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137 if (bp->top != NULL) { 138 p->flags |= TERMP_NOSPACE; 139 term_word(p, bp->top); 140 } 141 if (bp->bottom != NULL) { 142 p->flags |= TERMP_NOSPACE; 143 term_word(p, "_"); 144 }
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145 146 /* Right delimiter after this box? */ 147 148 if (delim) { 149 p->flags |= TERMP_NOSPACE; 150 term_word(p, bp->right != NULL ? bp->right : ")"); 151 if (bp->parent->type == EQN_SUBEXPR && bp->next != NULL) 152 p->flags |= TERMP_NOSPACE; 153 } |
154}
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