2 /* Copyright (C) 1989-2014 Free Software Foundation, Inc.
3 Written by James Clark (jjc@jclark.com)
5 This file is part of groff.
7 groff is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation, either version 3 of the License, or
10 (at your option) any later version.
12 groff is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
23 enum left_or_right_t { LEFT_DELIM = 01, RIGHT_DELIM = 02 };
25 // Small must be none-zero and must exist in each device.
26 // Small will be put in the roman font, others are assumed to be
27 // on the special font (so no font change will be necessary.)
33 const char *chain_format;
40 "(", LEFT_DELIM|RIGHT_DELIM, "(", "\\[parenleft%s]",
47 ")", LEFT_DELIM|RIGHT_DELIM, ")", "\\[parenright%s]",
54 "[", LEFT_DELIM|RIGHT_DELIM, "[", "\\[bracketleft%s]",
61 "]", LEFT_DELIM|RIGHT_DELIM, "]", "\\[bracketright%s]",
68 "{", LEFT_DELIM|RIGHT_DELIM, "{", "\\[braceleft%s]",
75 "}", LEFT_DELIM|RIGHT_DELIM, "}", "\\[braceright%s]",
82 "|", LEFT_DELIM|RIGHT_DELIM, "|", "\\[bar%s]",
89 "floor", LEFT_DELIM, "\\(lf", "\\[floorleft%s]",
96 "floor", RIGHT_DELIM, "\\(rf", "\\[floorright%s]",
100 "\\[bracketrightbt]",
103 "ceiling", LEFT_DELIM, "\\(lc", "\\[ceilingleft%s]",
110 "ceiling", RIGHT_DELIM, "\\(rc", "\\[ceilingright%s]",
111 "\\[bracketrightex]",
112 "\\[bracketrighttp]",
117 "||", LEFT_DELIM|RIGHT_DELIM, "|", "\\[bar%s]",
124 "<", LEFT_DELIM|RIGHT_DELIM, "\\(la", "\\[angleleft%s]",
131 ">", LEFT_DELIM|RIGHT_DELIM, "\\(ra", "\\[angleright%s]",
138 "uparrow", LEFT_DELIM|RIGHT_DELIM, "\\(ua", "\\[arrowup%s]",
145 "downarrow", LEFT_DELIM|RIGHT_DELIM, "\\(da", "\\[arrowdown%s]",
152 "updownarrow", LEFT_DELIM|RIGHT_DELIM, "\\(va", "\\[arrowupdown%s]",
160 const int DELIM_TABLE_SIZE = int(sizeof(delim_table)/sizeof(delim_table[0]));
162 class delim_box : public box {
168 delim_box(char *, box *, char *);
170 int compute_metrics(int);
172 void check_tabs(int);
176 box *make_delim_box(char *l, box *pp, char *r)
178 if (l != 0 && *l == '\0') {
182 if (r != 0 && *r == '\0') {
186 return new delim_box(l, pp, r);
189 delim_box::delim_box(char *l, box *pp, char *r)
190 : left(l), right(r), p(pp)
194 delim_box::~delim_box()
201 static void build_extensible(const char *ext, const char *top, const char *mid,
205 printf(".nr " DELIM_WIDTH_REG " 0\\w" DELIMITER_CHAR "%s" DELIMITER_CHAR "\n",
207 printf(".nr " EXT_HEIGHT_REG " 0\\n[rst]\n");
208 printf(".nr " EXT_DEPTH_REG " 0-\\n[rsb]\n");
210 printf(".nr " DELIM_WIDTH_REG " 0\\n[" DELIM_WIDTH_REG "]"
211 ">?\\w" DELIMITER_CHAR "%s" DELIMITER_CHAR "\n",
213 printf(".nr " TOP_HEIGHT_REG " 0\\n[rst]\n");
214 printf(".nr " TOP_DEPTH_REG " 0-\\n[rsb]\n");
217 printf(".nr " DELIM_WIDTH_REG " 0\\n[" DELIM_WIDTH_REG "]"
218 ">?\\w" DELIMITER_CHAR "%s" DELIMITER_CHAR "\n",
220 printf(".nr " MID_HEIGHT_REG " 0\\n[rst]\n");
221 printf(".nr " MID_DEPTH_REG " 0-\\n[rsb]\n");
224 printf(".nr " DELIM_WIDTH_REG " 0\\n[" DELIM_WIDTH_REG "]"
225 ">?\\w" DELIMITER_CHAR "%s" DELIMITER_CHAR "\n",
227 printf(".nr " BOT_HEIGHT_REG " 0\\n[rst]\n");
228 printf(".nr " BOT_DEPTH_REG " 0-\\n[rsb]\n");
230 printf(".nr " TOTAL_HEIGHT_REG " 0");
232 printf("+\\n[" TOP_HEIGHT_REG "]+\\n[" TOP_DEPTH_REG "]");
234 printf("+\\n[" BOT_HEIGHT_REG "]+\\n[" BOT_DEPTH_REG "]");
236 printf("+\\n[" MID_HEIGHT_REG "]+\\n[" MID_DEPTH_REG "]");
238 // determine how many extensible characters we need
239 printf(".nr " TEMP_REG " \\n[" DELTA_REG "]-\\n[" TOTAL_HEIGHT_REG "]");
242 printf(">?0+\\n[" EXT_HEIGHT_REG "]+\\n[" EXT_DEPTH_REG "]-1/(\\n["
243 EXT_HEIGHT_REG "]+\\n[" EXT_DEPTH_REG "])\n");
245 printf(".nr " TOTAL_HEIGHT_REG " +(\\n[" EXT_HEIGHT_REG "]+\\n["
246 EXT_DEPTH_REG "]*\\n[" TEMP_REG "]");
250 printf(".ds " DELIM_STRING " \\Z" DELIMITER_CHAR
251 "\\v'-%dM-(\\n[" TOTAL_HEIGHT_REG "]u/2u)'\n",
254 printf(".as " DELIM_STRING " \\v'\\n[" TOP_HEIGHT_REG "]u'"
255 "\\Z" DELIMITER_CHAR "%s" DELIMITER_CHAR
256 "\\v'\\n[" TOP_DEPTH_REG "]u'\n",
259 // this macro appends $2 copies of $3 to string $1
260 printf(".de " REPEAT_APPEND_STRING_MACRO "\n"
261 ".if \\\\$2 \\{.as \\\\$1 \"\\\\$3\n"
262 "." REPEAT_APPEND_STRING_MACRO " \\\\$1 \\\\$2-1 \"\\\\$3\"\n"
266 printf("." REPEAT_APPEND_STRING_MACRO " " DELIM_STRING " \\n[" TEMP_REG "] "
267 "\\v'\\n[" EXT_HEIGHT_REG "]u'"
268 "\\Z" DELIMITER_CHAR "%s" DELIMITER_CHAR
269 "\\v'\\n[" EXT_DEPTH_REG "]u'\n",
273 printf(".as " DELIM_STRING " \\v'\\n[" MID_HEIGHT_REG "]u'"
274 "\\Z" DELIMITER_CHAR "%s" DELIMITER_CHAR
275 "\\v'\\n[" MID_DEPTH_REG "]u'\n",
277 printf("." REPEAT_APPEND_STRING_MACRO " " DELIM_STRING
278 " \\n[" TEMP_REG "] "
279 "\\v'\\n[" EXT_HEIGHT_REG "]u'"
280 "\\Z" DELIMITER_CHAR "%s" DELIMITER_CHAR
281 "\\v'\\n[" EXT_DEPTH_REG "]u'\n",
285 printf(".as " DELIM_STRING " \\v'\\n[" BOT_HEIGHT_REG "]u'"
286 "\\Z" DELIMITER_CHAR "%s" DELIMITER_CHAR
287 "\\v'\\n[" BOT_DEPTH_REG "]u'\n",
289 printf(".as " DELIM_STRING " " DELIMITER_CHAR "\n");
292 static void define_extensible_string(char *delim, int uid,
293 left_or_right_t left_or_right)
295 printf(".ds " DELIM_STRING "\n");
296 delimiter *d = delim_table;
297 int delim_len = strlen(delim);
299 for (i = 0; i < DELIM_TABLE_SIZE; i++, d++)
300 if (strncmp(delim, d->name, delim_len) == 0
301 && (left_or_right & d->flags) != 0)
303 if (i >= DELIM_TABLE_SIZE) {
304 error("there is no `%1' delimiter", delim);
305 printf(".nr " DELIM_WIDTH_REG " 0\n");
309 printf(".nr " DELIM_WIDTH_REG " 0\\w" DELIMITER_CHAR "\\f[%s]%s\\fP" DELIMITER_CHAR "\n"
310 ".ds " DELIM_STRING " \\Z" DELIMITER_CHAR
311 "\\v'\\n[rsb]u+\\n[rst]u/2u-%dM'\\f[%s]%s\\fP" DELIMITER_CHAR "\n"
312 ".nr " TOTAL_HEIGHT_REG " \\n[rst]-\\n[rsb]\n"
313 ".if \\n[" TOTAL_HEIGHT_REG "]<\\n[" DELTA_REG "] "
315 current_roman_font, d->small, axis_height,
316 current_roman_font, d->small);
319 sprintf(buf, d->chain_format, "\\\\n[" INDEX_REG "]");
320 printf(".nr " INDEX_REG " 0\n"
321 ".de " TEMP_MACRO "\n"
323 ".nr " DELIM_WIDTH_REG " 0\\w" DELIMITER_CHAR "%s" DELIMITER_CHAR "\n"
324 ".ds " DELIM_STRING " \\Z" DELIMITER_CHAR
325 "\\v'\\\\n[rsb]u+\\\\n[rst]u/2u-%dM'%s" DELIMITER_CHAR "\n"
326 ".nr " TOTAL_HEIGHT_REG " \\\\n[rst]-\\\\n[rsb]\n"
327 ".if \\\\n[" TOTAL_HEIGHT_REG "]<\\n[" DELTA_REG "] "
328 "\\{.nr " INDEX_REG " +1\n"
331 ".el .nr " INDEX_REG " 0-1\n"
334 buf, buf, axis_height, buf);
336 printf(".if \\n[" INDEX_REG "]<0 \\{.if c%s \\{\\\n", d->ext);
337 build_extensible(d->ext, d->top, d->mid, d->bot);
341 printf(".as " DELIM_STRING " \\h'\\n[" DELIM_WIDTH_REG "]u'\n");
342 printf(".nr " WIDTH_FORMAT " +\\n[" DELIM_WIDTH_REG "]\n", uid);
343 printf(".nr " HEIGHT_FORMAT " \\n[" HEIGHT_FORMAT "]"
344 ">?(\\n[" TOTAL_HEIGHT_REG "]/2+%dM)\n",
345 uid, uid, axis_height);
346 printf(".nr " DEPTH_FORMAT " \\n[" DEPTH_FORMAT "]"
347 ">?(\\n[" TOTAL_HEIGHT_REG "]/2-%dM)\n",
348 uid, uid, axis_height);
351 int delim_box::compute_metrics(int style)
353 int r = p->compute_metrics(style);
354 printf(".nr " WIDTH_FORMAT " 0\\n[" WIDTH_FORMAT "]\n", uid, p->uid);
355 printf(".nr " HEIGHT_FORMAT " \\n[" HEIGHT_FORMAT "]\n", uid, p->uid);
356 printf(".nr " DEPTH_FORMAT " \\n[" DEPTH_FORMAT "]\n", uid, p->uid);
357 printf(".nr " DELTA_REG " \\n[" HEIGHT_FORMAT "]-%dM"
358 ">?(\\n[" DEPTH_FORMAT "]+%dM)\n",
359 p->uid, axis_height, p->uid, axis_height);
360 printf(".nr " DELTA_REG " 0\\n[" DELTA_REG "]*%d/500"
361 ">?(\\n[" DELTA_REG "]*2-%dM)\n",
362 delimiter_factor, delimiter_shortfall);
364 define_extensible_string(left, uid, LEFT_DELIM);
365 printf(".rn " DELIM_STRING " " LEFT_DELIM_STRING_FORMAT "\n",
368 printf(".nr " MARK_REG " +\\n[" DELIM_WIDTH_REG "]\n");
371 define_extensible_string(right, uid, RIGHT_DELIM);
372 printf(".rn " DELIM_STRING " " RIGHT_DELIM_STRING_FORMAT "\n",
378 void delim_box::output()
380 if (output_format == troff) {
382 printf("\\*[" LEFT_DELIM_STRING_FORMAT "]", uid);
385 printf("\\*[" RIGHT_DELIM_STRING_FORMAT "]", uid);
387 else if (output_format == mathml) {
388 printf("<mrow><mo>%s</mo>", left);
390 printf("<mo>%s</mo></mrow>", right);
394 void delim_box::check_tabs(int level)
396 p->check_tabs(level);
399 void delim_box::debug_print()
401 fprintf(stderr, "left \"%s\" { ", left ? left : "");
403 fprintf(stderr, " }");
405 fprintf(stderr, " right \"%s\"", right);