| 1 | /* latex.c -- LaTeX output
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| 2 | Copyright (c) 1993-2000 Eberhard Mattes
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| 3 |
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| 4 | This file is part of emxdoc.
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| 5 |
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| 6 | emxdoc is free software; you can redistribute it and/or modify it
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| 7 | under the terms of the GNU General Public License as published by
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| 8 | the Free Software Foundation; either version 2, or (at your option)
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| 9 | any later version.
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| 10 |
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| 11 | emxdoc is distributed in the hope that it will be useful,
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| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 14 | GNU General Public License for more details.
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| 15 |
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| 16 | You should have received a copy of the GNU General Public License
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| 17 | along with emxdoc; see the file COPYING. If not, write to
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| 18 | the Free Software Foundation, 59 Temple Place - Suite 330,
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| 19 | Boston, MA 02111-1307, USA. */
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| 20 |
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| 21 |
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| 22 | /* TODO: LaTeX output is work in progress */
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| 23 |
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| 24 | #include <stdio.h>
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| 25 | #include <stdlib.h>
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| 26 | #include <string.h>
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| 27 | #include <ctype.h>
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| 28 | #include "emxdoc.h"
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| 29 | #include "latex.h"
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| 30 |
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| 31 | static const uchar *index_word1;
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| 32 | static int index_flag;
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| 33 |
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| 34 | void latex_output (const uchar *p, int may_break)
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| 35 | {
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| 36 | const uchar *q;
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| 37 |
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| 38 | if (*p == ' ' && output_x >= 60 && may_break)
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| 39 | {
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| 40 | write_nl ();
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| 41 | ++p;
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| 42 | }
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| 43 | while ((q = strpbrk (p, "\\&#$%_^")) != NULL)
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| 44 | {
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| 45 | write_nstring (p, q - p);
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| 46 | switch (*q)
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| 47 | {
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| 48 | case '\\':
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| 49 | /* TODO: Warning if no such character in current font! */
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| 50 | write_string ("\\bs/");
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| 51 | break;
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| 52 | case '&':
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| 53 | write_string ("\\&");
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| 54 | break;
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| 55 | case '#':
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| 56 | write_string ("\\#");
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| 57 | break;
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| 58 | case '$':
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| 59 | write_string ("\\$");
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| 60 | break;
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| 61 | case '%':
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| 62 | write_string ("\\%");
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| 63 | break;
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| 64 | case '_':
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| 65 | /* TODO: Warning if no such character in current font! */
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| 66 | write_string ("\\_");
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| 67 | break;
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| 68 | case '^':
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| 69 | /* TODO: Warning if no such character in current font! */
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| 70 | write_string ("\\^");
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| 71 | break;
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| 72 | default:
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| 73 | abort ();
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| 74 | }
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| 75 | p = q + 1;
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| 76 | }
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| 77 | write_string (p);
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| 78 | }
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| 79 |
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| 80 |
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| 81 | static void latex_elements (enum style style, int alltt)
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| 82 | {
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| 83 | const struct element *ep, *ep2;
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| 84 | enum style style_stack[STYLE_STACK_SIZE];
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| 85 | int style_sp, ignore_spaces;
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| 86 | size_t len;
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| 87 | uchar *p, last;
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| 88 |
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| 89 | if (alltt)
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| 90 | write_line ("\\begin{alltt}");
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| 91 | style_sp = 0;
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| 92 | style_stack[style_sp] = style;
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| 93 | ignore_spaces = FALSE;
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| 94 | for (ep = elements; ep->el != EL_END; ++ep)
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| 95 | switch (ep->el)
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| 96 | {
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| 97 | case EL_WORD:
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| 98 | case EL_PUNCT:
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| 99 | p = ep->wp->str;
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| 100 | if (strcmp (p, ".") == 0 && ep != elements && ep[-1].el == EL_WORD)
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| 101 | {
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| 102 | ep2 = ep + 1;
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| 103 | while (ep2->el == EL_STYLE || ep2->el == EL_ENDSTYLE)
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| 104 | ++ep2;
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| 105 | if (ep2->el == EL_SPACE)
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| 106 | {
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| 107 | len = strlen (ep[-1].wp->str);
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| 108 | if (len != 0)
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| 109 | {
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| 110 | last = ep[-1].wp->str[len-1];
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| 111 | if (isupper (last) && ep2->n == 2)
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| 112 | {
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| 113 | ignore_spaces = TRUE;
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| 114 | write_string ("\\@. ");
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| 115 | }
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| 116 | else if (!isupper (last) && ep2->n == 1)
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| 117 | {
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| 118 | ignore_spaces = TRUE;
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| 119 | write_string (".\\ ");
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| 120 | }
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| 121 | else
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| 122 | write_string (".");
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| 123 | break;
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| 124 | }
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| 125 | }
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| 126 | }
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| 127 | if (strcmp (p, "--") == 0)
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| 128 | p = "---";
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| 129 | if (ep->wp->special != NULL && ep->wp->special->latex != NULL)
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| 130 | write_string (ep->wp->special->latex);
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| 131 | else if (style_sp == 0 || style_stack[style_sp] == STYLE_NORMAL)
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| 132 | format_string (p, (ep->wp->style != STYLE_NORMAL
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| 133 | ? ep->wp->style : style), FALSE);
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| 134 | else
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| 135 | format_string (p, style_stack[style_sp], FALSE);
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| 136 | break;
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| 137 | case EL_SPACE:
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| 138 | if (ignore_spaces)
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| 139 | ignore_spaces = FALSE;
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| 140 | else
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| 141 | format_spaces (ep->n, style_stack[style_sp], FALSE);
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| 142 | break;
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| 143 | case EL_BREAK:
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| 144 | if (alltt)
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| 145 | write_nl ();
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| 146 | else
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| 147 | write_line ("\\break");
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| 148 | break;
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| 149 | case EL_STYLE:
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| 150 | if (style_sp + 1 >= STYLE_STACK_SIZE)
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| 151 | fatal ("%s:%d: Style stack overflow", input_fname, line_no);
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| 152 | style_stack[++style_sp] = ep->n;
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| 153 | break;
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| 154 | case EL_ENDSTYLE:
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| 155 | if (style_sp == 0)
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| 156 | fatal ("%s:%d: Style stack underflow", input_fname, line_no);
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| 157 | --style_sp;
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| 158 | break;
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| 159 | default:
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| 160 | abort ();
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| 161 | }
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| 162 | if (alltt)
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| 163 | write_line ("\\end{alltt}");
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| 164 | }
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| 165 |
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| 166 |
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| 167 | void latex_start_hilite (void)
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| 168 | {
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| 169 | if (hl_stack[hl_sp] & HL_TT)
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| 170 | write_string ("\\texttt{");
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| 171 | else if (hl_stack[hl_sp] & HL_BF)
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| 172 | write_string ("\\textbf{");
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| 173 | else if (hl_stack[hl_sp] & HL_SL)
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| 174 | write_string ("\\textsl{");
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| 175 | else if (hl_stack[hl_sp] & HL_EM)
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| 176 | write_string ("\\emph{");
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| 177 | }
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| 178 |
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| 179 |
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| 180 | void latex_end_hilite (void)
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| 181 | {
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| 182 | write_string ("}");
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| 183 | }
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| 184 |
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| 185 |
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| 186 | void latex_end_env (void)
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| 187 | {
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| 188 | switch (env_stack[env_sp].env)
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| 189 | {
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| 190 | case ENV_DESCRIPTION:
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| 191 | case ENV_LIST:
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| 192 | write_break ();
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| 193 | write_line ("\\end{description}");
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| 194 | break;
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| 195 | case ENV_ENUMERATE:
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| 196 | write_break ();
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| 197 | write_line ("\\end{enumerate}");
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| 198 | break;
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| 199 | case ENV_ITEMIZE:
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| 200 | write_break ();
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| 201 | write_line ("\\end{itemize}");
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| 202 | break;
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| 203 | case ENV_TYPEWRITER:
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| 204 | case ENV_INDENT:
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| 205 | write_break ();
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| 206 | write_line ("\\end{quote}");
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| 207 | break;
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| 208 | default:
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| 209 | abort ();
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| 210 | }
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| 211 | }
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| 212 |
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| 213 |
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| 214 | void latex_heading1 (void)
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| 215 | {
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| 216 | write_nl ();
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| 217 | }
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| 218 |
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| 219 |
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| 220 | void latex_heading2 (const uchar *s)
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| 221 | {
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| 222 | if (para_flag)
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| 223 | write_nl ();
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| 224 | switch (tg_level)
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| 225 | {
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| 226 | case 0:
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| 227 | latex_output (s, FALSE);
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| 228 | write_line ("\\break");
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| 229 | break;
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| 230 | case 1:
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| 231 | write_string ("\\section{");
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| 232 | latex_output (s, FALSE);
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| 233 | write_line ("}");
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| 234 | break;
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| 235 | case 2:
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| 236 | write_string ("\\subsection{");
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| 237 | latex_output (s, FALSE);
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| 238 | write_line ("}");
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| 239 | break;
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| 240 | case 3:
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| 241 | write_string ("\\subsubsection{");
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| 242 | latex_output (s, FALSE);
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| 243 | write_line ("}");
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| 244 | break;
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| 245 | default:
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| 246 | fatal ("Sorry, LaTeX supports only 3 levels of headings");
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| 247 | }
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| 248 | write_nl ();
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| 249 | }
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| 250 |
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| 251 |
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| 252 | void latex_description (void)
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| 253 | {
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| 254 | write_break ();
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| 255 | write_line ("\\begin{description}");
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| 256 | write_nl ();
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| 257 | }
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| 258 |
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| 259 |
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| 260 | void latex_enumerate (void)
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| 261 | {
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| 262 | write_break ();
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| 263 | write_line ("\\begin{enumerate}");
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| 264 | write_nl ();
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| 265 | }
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| 266 |
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| 267 |
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| 268 | void latex_itemize (void)
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| 269 | {
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| 270 | write_break ();
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| 271 | write_line ("\\begin{itemize}");
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| 272 | write_nl ();
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| 273 | }
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| 274 |
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| 275 |
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| 276 | void latex_indent (void)
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| 277 | {
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| 278 | write_break ();
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| 279 | write_line ("\\begin{quote}");
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| 280 | }
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| 281 |
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| 282 |
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| 283 | void latex_list (void)
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| 284 | {
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| 285 | write_break ();
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| 286 | write_line ("\\begin{description}");
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| 287 | }
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| 288 |
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| 289 |
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| 290 | void latex_verbatim_start (enum tag tag_end)
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| 291 | {
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| 292 | write_break ();
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| 293 | switch (tag_end)
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| 294 | {
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| 295 | case TAG_ENDHEADERS:
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| 296 | write_nl ();
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| 297 | write_line ("\\subsubsection*{Headers}");
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| 298 | break;
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| 299 | case TAG_ENDSAMPLECODE:
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| 300 | write_nl ();
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| 301 | write_line ("\\subsubsection*{Example}");
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| 302 | break;
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| 303 | case TAG_ENDEXAMPLE:
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| 304 | write_line ("\\begin{quote}");
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| 305 | break;
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| 306 | default:
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| 307 | break;
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| 308 | }
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| 309 | write_break ();
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| 310 | write_line ("\\begin{verbatim}");
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| 311 | }
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| 312 |
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| 313 |
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| 314 | void latex_verbatim_end (enum tag tag_end)
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| 315 | {
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| 316 | write_line ("\\end{verbatim}");
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| 317 | switch (tag_end)
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| 318 | {
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| 319 | case TAG_ENDEXAMPLE:
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| 320 | write_line ("\\end{quote}");
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| 321 | break;
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| 322 | default:
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| 323 | break;
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| 324 | }
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| 325 | }
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| 326 |
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| 327 |
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| 328 | void latex_description_item (const uchar *s)
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| 329 | {
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| 330 | write_break ();
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| 331 | write_string ("\\item[");
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| 332 | make_elements (s);
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| 333 | latex_elements (STYLE_NORMAL, FALSE);
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| 334 | write_line ("]");
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| 335 | }
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| 336 |
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| 337 |
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| 338 | void latex_enumerate_item (void)
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| 339 | {
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| 340 | write_break ();
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| 341 | write_line ("\\item");
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| 342 | }
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| 343 |
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| 344 |
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| 345 | void latex_itemize_item (void)
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| 346 | {
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| 347 | write_break ();
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| 348 | write_line ("\\item");
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| 349 | }
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| 350 |
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| 351 |
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| 352 | void latex_list_item (const uchar *s)
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| 353 | {
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| 354 | write_break ();
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| 355 | write_string ("\\item[");
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| 356 | make_elements (s);
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| 357 | latex_elements (STYLE_NORMAL, FALSE);
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| 358 | write_line ("]");
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| 359 | }
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| 360 |
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| 361 |
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| 362 | void latex_copy (void)
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| 363 | {
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| 364 | if (para_flag)
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| 365 | {
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| 366 | write_break ();
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| 367 | write_nl ();
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| 368 | }
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| 369 | switch (env_stack[env_sp].env)
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| 370 | {
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| 371 | case ENV_TYPEWRITER:
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| 372 | latex_elements (STYLE_NORMAL, TRUE);
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| 373 | break;
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| 374 | default:
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| 375 | latex_elements (STYLE_NORMAL, FALSE);
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| 376 | break;
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| 377 | }
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| 378 | }
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| 379 |
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| 380 | void latex_prototype_start (void)
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| 381 | {
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| 382 | write_break ();
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| 383 | write_fmt ("\\subsubsection*{Prototype%s}", function_count == 1 ? "" : "s");
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| 384 | write_nl ();
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| 385 | }
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| 386 |
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| 387 | void latex_prototype_end (uchar *compat)
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| 388 | {
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| 389 | latex_elements (STYLE_NORMAL, TRUE);
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| 390 | if (compat[0] != 0)
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| 391 | {
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| 392 | write_break ();
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| 393 | write_line ("\\subsubsection*{Compatibility}");
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| 394 | format_string (compat, STYLE_NORMAL, TRUE);
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| 395 | compat[0] = 0;
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| 396 | }
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| 397 | write_line ("\\subsubsection*{Description}");
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| 398 |
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| 399 | }
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| 400 |
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| 401 | void latex_see_also_start (void)
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| 402 | {
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| 403 | write_break ();
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| 404 | write_line ("\\subsubsection*{See also}");
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| 405 | }
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| 406 |
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| 407 | void latex_see_also_word (const uchar *word, const uchar *s)
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| 408 | {
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| 409 | latex_output (word, FALSE);
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| 410 | if (*s != 0)
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| 411 | write_string (", ");
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| 412 | }
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| 413 |
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| 414 | void latex_libref_section (const uchar *s)
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| 415 | {
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| 416 | write_break ();
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| 417 | write_fmt ("\\subsubsection*{%s}", s);
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| 418 | write_nl ();
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| 419 | }
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| 420 |
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| 421 | void latex_sample_file (const uchar *s)
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| 422 | {
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| 423 | latex_libref_section ("Example");
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| 424 | format_string ("See ", STYLE_NORMAL, FALSE);
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| 425 | format_string (s, STYLE_TTY, FALSE);
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| 426 | para_flag = TRUE;
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| 427 | }
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| 428 |
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| 429 | void latex_function_start (const struct toc *tp)
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| 430 | {
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| 431 | write_break ();
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| 432 | write_string ("\\subsection{");
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| 433 | latex_output (tp->title, TRUE);
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| 434 | write_line ("}");
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| 435 | }
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| 436 |
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| 437 | void latex_function_function (const uchar *s)
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| 438 | {
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| 439 | if (index_word1 != NULL)
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| 440 | latex_index (s, 2);
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| 441 | }
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| 442 |
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| 443 | void latex_start (void)
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| 444 | {
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| 445 | write_line ("\\documentclass{article}");
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| 446 | write_line ("\\usepackage{emxdoc}");
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| 447 | write_line ("\\usepackage{alltt}");
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| 448 | if (output_encoding == ENC_CP850)
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| 449 | write_line ("\\usepackage[cp850]{inputenc}");
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| 450 | else if (output_encoding == ENC_ISO8859_1)
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| 451 | write_line ("\\usepackage[latin1]{inputenc}");
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| 452 | write_line ("\\usepackage[T1]{fontenc}");
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| 453 | if (index_flag)
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| 454 | write_line ("\\usepackage{makeidx}");
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| 455 | if (title != NULL)
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| 456 | {
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| 457 | write_string ("\\title{");
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| 458 | format_string (title, STYLE_NORMAL, FALSE);
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| 459 | write_line ("}");
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| 460 | write_line ("\\author{}");
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| 461 | }
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| 462 | if (index_flag)
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| 463 | write_line ("\\makeindex");
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| 464 | write_line ("\\begin{document}");
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| 465 | if (title != NULL)
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| 466 | write_line ("\\maketitle");
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|---|
| 467 | write_line ("\\tableofcontents");
|
|---|
| 468 | write_line ("\\newpage");
|
|---|
| 469 | }
|
|---|
| 470 |
|
|---|
| 471 |
|
|---|
| 472 | void latex_end (void)
|
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| 473 | {
|
|---|
| 474 | if (out)
|
|---|
| 475 | {
|
|---|
| 476 | write_nl ();
|
|---|
| 477 | if (index_flag)
|
|---|
| 478 | write_line ("\\printindex");
|
|---|
| 479 | write_line ("\\end{document}");
|
|---|
| 480 | }
|
|---|
| 481 | }
|
|---|
| 482 |
|
|---|
| 483 | void latex_index (const uchar *s, int level)
|
|---|
| 484 | {
|
|---|
| 485 | switch (level)
|
|---|
| 486 | {
|
|---|
| 487 | case 0:
|
|---|
| 488 | index_flag = TRUE;
|
|---|
| 489 | if (out)
|
|---|
| 490 | {
|
|---|
| 491 | write_string ("\\index{");
|
|---|
| 492 | latex_output (s, FALSE);
|
|---|
| 493 | write_string ("}");
|
|---|
| 494 | }
|
|---|
| 495 | break;
|
|---|
| 496 | case 1:
|
|---|
| 497 | if (*s == 0)
|
|---|
| 498 | index_word1 = NULL;
|
|---|
| 499 | else
|
|---|
| 500 | {
|
|---|
| 501 | struct word *wp = word_add (s);
|
|---|
| 502 | index_word1 = wp->str;
|
|---|
| 503 | }
|
|---|
| 504 | break;
|
|---|
| 505 | case 2:
|
|---|
| 506 | if (index_word1 == NULL)
|
|---|
| 507 | fatal ("%s:%d: %ci2 without %ci1", input_fname, line_no,
|
|---|
| 508 | escape, escape);
|
|---|
| 509 | index_flag = TRUE;
|
|---|
| 510 | if (out)
|
|---|
| 511 | {
|
|---|
| 512 | write_string ("\\index{");
|
|---|
| 513 | latex_output (index_word1, FALSE);
|
|---|
| 514 | write_string ("!");
|
|---|
| 515 | latex_output (s, FALSE);
|
|---|
| 516 | write_string ("}");
|
|---|
| 517 | }
|
|---|
| 518 | break;
|
|---|
| 519 | default:
|
|---|
| 520 | abort ();
|
|---|
| 521 | }
|
|---|
| 522 | }
|
|---|
