1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 /* Copyright (c) 1988 AT&T */
28 /* All Rights Reserved */
29
30 /*
31 * University Copyright- Copyright (c) 1982, 1986, 1988
32 * The Regents of the University of California
33 * All Rights Reserved
34 *
35 * University Acknowledgment- Portions of this document are derived from
36 * software developed by the University of California, Berkeley, and its
37 * contributors.
38 */
39
40 /*LINTLIBRARY*/
41
42 #include <stdio.h>
43 #include <stdlib.h>
44 #include <string.h>
45 #include <sys/types.h>
46 #include "curses_inc.h"
47
48 #ifdef _VR2_COMPAT_CODE
49 extern char _endwin;
50 #endif /* _VR2_COMPAT_CODE */
51
52 /* 1200 is put at the 0th location since 0 is probably a mistake. */
53 static long baud_convert[] = {
54 1200, 50, 75, 110, 134, 150, 200, 300, 600, 1200,
55 1800, 2400, 4800, 9600, 19200, 38400, 57600, 76800,
56 115200, 153600, 230400, 307200, 460800, 921600,
57 1000000, 1152000, 1500000, 2000000, 2500000,
58 3000000, 3500000, 4000000
59 };
60
61 static char isfilter = 0;
62 static int _chk_trm(void);
63 static void _forget(void);
64
65 /*
66 * newscreen sets up a terminal and returns a pointer to the terminal
67 * structure or NULL in case of an error. The parameters are:
68 * type: terminal type
69 * lsize, csize, tabsize: physical sizes
70 * infptr, outfptr: input and output stdio stream file pointers
71 */
72
73 SCREEN *
newscreen(char * type,int lsize,int csize,int tabsize,FILE * outfptr,FILE * infptr)74 newscreen(char *type, int lsize, int csize, int tabsize,
75 FILE *outfptr, FILE *infptr)
76 {
77 int old_lines = LINES, old_cols = COLS, retcode;
78 #ifndef _IOFBF
79 char *sobuf;
80 #endif /* _IOBUF */
81 WINDOW *old_curscr = curscr;
82 SCREEN *old = SP;
83 TERMINAL *old_term = cur_term;
84
85 #ifdef DEBUG
86 if (outf == NULL) {
87 outf = fopen("trace", "w");
88 if (outf == NULL) {
89 perror("trace");
90 exit(-1);
91 }
92 setbuf(outf, (char *)NULL);
93 }
94
95 if (outf)
96 fprintf(outf, "NEWTERM(type=%s, outfptr=%x %d, infptr=%x %d) "
97 "isatty(2) %d, getenv %s\n", type, outfptr,
98 fileno(outfptr), infptr, fileno(infptr), isatty(2),
99 getenv("TERM"));
100 #endif /* DEBUG */
101
102
103 /* read in terminfo file */
104
105 if (setupterm(type, fileno(outfptr), &retcode) != 0)
106 goto err2;
107
108 /* the max length of a multi-byte character */
109 _csmax = (cswidth[0] > cswidth[1]+1 ?
110 (cswidth[0] > cswidth[2]+1 ? cswidth[0] : cswidth[2]+1) :
111 (cswidth[1] > cswidth[2] ? cswidth[1]+1 : cswidth[2]+1));
112 if (_csmax > CSMAX)
113 goto err2;
114 /* the max length of a multi-column character */
115 _scrmax = _curs_scrwidth[0] > _curs_scrwidth[1] ?
116 (_curs_scrwidth[0] > _curs_scrwidth[2] ? _curs_scrwidth[0] :
117 _curs_scrwidth[2]) : (_curs_scrwidth[1] > _curs_scrwidth[2] ?
118 _curs_scrwidth[1] : _curs_scrwidth[2]);
119 /* true multi-byte/multi-column case */
120 _mbtrue = (_csmax > 1 || _scrmax > 1);
121
122 if ((curs_errno = _chk_trm()) != -1) {
123 (void) strcpy(curs_parm_err, cur_term->_termname);
124 goto err2;
125 }
126
127 /* use calloc because almost everything needs to be zero */
128 if ((SP = (SCREEN *) calloc(1, sizeof (SCREEN))) == NULL)
129 goto err1;
130
131 SP->term_file = outfptr;
132 SP->input_file = infptr;
133
134 /*
135 * The default is echo, for upward compatibility, but we do
136 * all echoing in curses to avoid problems with the tty driver
137 * echoing things during critical sections.
138 */
139
140 SP->fl_echoit = 1;
141
142 /* set some fields for cur_term structure */
143
144 (void) typeahead(fileno(infptr));
145 (void) tinputfd(fileno(infptr));
146
147 /*
148 * We use LINES instead of the SP variable and a local variable because
149 * slk_init and rip_init update the LINES value and application code
150 * may look at the value of LINES in the function called by rip_init.
151 */
152
153 /* LINTED */
154 LINES = SP->lsize = lsize > 0 ? lsize : lines;
155
156 /* force the output to be buffered */
157 #ifdef _IOFBF
158 (void) setvbuf(outfptr, (char *)NULL, _IOFBF, 0);
159 #else /* _IOFBF */
160 if ((sobuf = malloc(BUFSIZ)) == NULL) {
161 curs_errno = CURS_BAD_MALLOC;
162 #ifdef DEBUG
163 strcpy(curs_parm_err, "newscreen");
164 #endif /* DEBUG */
165 }
166 setbuf(outfptr, sobuf);
167 #endif /* _IOFBF */
168
169 #ifdef SYSV
170 SP->baud = baud_convert[_BRS(PROGTTYS)];
171 #else /* SYSV */
172 SP->baud = baud_convert[_BR(PROGTTY)];
173 #endif /* SYSV */
174
175 /* figure out how much each terminal capability costs */
176 _init_costs();
177
178 /* initialize the array of alternate characters */
179 (void) init_acs();
180
181 SP->tcap = cur_term;
182
183 /* set tty settings to something reasonable for us */
184 #ifdef SYSV
185 PROGTTYS.c_lflag &= ~ECHO;
186 PROGTTYS.c_lflag |= ISIG;
187 PROGTTYS.c_oflag &= ~(OCRNL|ONLCR); /* why would anyone set OCRNL? */
188 #else /* SYSV */
189 PROGTTY.sg_flags &= ~(RAW|ECHO|CRMOD);
190 #endif /* SYSV */
191
192 (void) cbreak();
193
194 /* LINTED */
195 COLS = SP->csize = csize > 0 ? csize : columns;
196 if (tabsize == 0)
197 tabsize = (init_tabs == -1) ? 8 : init_tabs;
198 /* LINTED */
199 SP->tsize = (short)tabsize;
200 #ifdef DEBUG
201 if (outf)
202 fprintf(outf, "LINES = %d, COLS = %d\n", LINES, COLS);
203 #endif /* DEBUG */
204
205 if ((curscr = SP->cur_scr = newwin(LINES, COLS, 0, 0)) == NULL)
206 goto err;
207
208 SP->fl_endwin = 2;
209 #ifdef _VR2_COMPAT_CODE
210 _endwin = FALSE;
211 #endif /* _VR2_COMPAT_CODE */
212 curscr->_sync = TRUE;
213
214 /*
215 * This will tell _quick_echo(if it's ever called), whether
216 * _quick_echo should let wrefresh handle everything.
217 */
218
219 if (ceol_standout_glitch || (magic_cookie_glitch >= 0) ||
220 tilde_glitch || (transparent_underline && erase_overstrike)) {
221 curscr->_flags |= _CANT_BE_IMMED;
222 }
223 if (!(SP->virt_scr = newwin(LINES, COLS, 0, 0)))
224 goto err;
225 _virtscr = SP->virt_scr;
226
227 SP->virt_scr->_clear = FALSE;
228
229 /* video mark map for cookie terminals */
230
231 if (ceol_standout_glitch || (magic_cookie_glitch >= 0)) {
232 int i, nc;
233 char **marks;
234
235 if ((marks = (char **)calloc((unsigned)LINES,
236 sizeof (char *))) == NULL)
237 goto err;
238 SP->_mks = marks;
239 nc = (COLS / BITSPERBYTE) + (COLS % BITSPERBYTE ? 1 : 0);
240 if ((*marks = (char *)calloc((unsigned)nc * LINES,
241 sizeof (char))) == NULL)
242 goto err;
243 for (i = LINES - 1; i-- > 0; ++marks)
244 *(marks + 1) = *marks + nc;
245 }
246
247 /* hash tables for lines */
248 if ((SP->cur_hash = (int *)calloc((unsigned)2 * LINES,
249 sizeof (int))) == NULL)
250 goto err;
251 SP->virt_hash = SP->cur_hash + LINES;
252
253 /* adjust the screen size if soft labels and/or ripoffline are used */
254 if (_slk_init)
255 (*_slk_init)();
256 if (_rip_init)
257 (*_rip_init)();
258
259 if ((SP->std_scr = newwin(LINES, COLS, 0, 0)) == NULL) {
260 /* free all the storage allocated above and return NULL */
261 err:
262 delscreen(SP);
263 COLS = old_cols;
264 curscr = old_curscr;
265 LINES = old_lines;
266 err1:
267 SP = old;
268
269 curs_errno = CURS_BAD_MALLOC;
270 #ifdef DEBUG
271 strcpy(curs_parm_err, "newscreen");
272 #endif /* DEBUG */
273
274 err2:
275 cur_term = old_term;
276 return (NULL);
277 }
278 #ifdef DEBUG
279 if (outf)
280 fprintf(outf, "SP %x, stdscr %x, curscr %x\n",
281 SP, SP->std_scr, curscr);
282 #endif /* DEBUG */
283
284 if (((SP->imode = (enter_insert_mode && exit_insert_mode)) != 0) &&
285 ((SP->dmode = (enter_delete_mode && exit_delete_mode)) != 0)) {
286 if (strcmp(enter_insert_mode, enter_delete_mode) == 0)
287 SP->sid_equal = TRUE;
288 if (strcmp(exit_insert_mode, exit_delete_mode) == 0)
289 SP->eid_equal = TRUE;
290 }
291 SP->ichok = (SP->imode || insert_character || parm_ich);
292 SP->dchok = (delete_character || parm_dch);
293
294 stdscr = SP->std_scr;
295 TABSIZE = SP->tsize;
296
297 return (SP);
298 }
299
300 /*
301 * check if terminal have capabilities to do basic cursor movements and
302 * screen clearing
303 */
304 static int
_chk_trm(void)305 _chk_trm(void)
306 {
307 short error_num = -1;
308 #ifdef DEBUG
309 if (outf)
310 fprintf(outf, "chk_trm().\n");
311 #endif /* DEBUG */
312
313 if (generic_type)
314 error_num = CURS_UNKNOWN;
315 else {
316 if (isfilter) {
317 _forget();
318 /* Only need to move left or right on current line */
319 if (!(cursor_left || carriage_return ||
320 column_address || parm_left_cursor)) {
321 goto out_stupid;
322 }
323 } else {
324 if ((hard_copy || over_strike) ||
325 /* some way to move up, down, left */
326 (!(cursor_address) &&
327 (!((cursor_up || cursor_home) && cursor_down &&
328 (cursor_left || carriage_return)))) ||
329 (!clear_screen)) {
330 out_stupid:
331 error_num = CURS_STUPID;
332 }
333 }
334 }
335 return (error_num);
336 }
337
338 int
filter(void)339 filter(void)
340 {
341 isfilter = 1;
342 return (OK);
343 }
344
345 /*
346 * if (for some reason) user assumes that terminal has only one line,
347 * disable all capabilities that deal with non-horizontal cursor movement
348 */
349 static void
_forget(void)350 _forget(void)
351 {
352 row_address = cursor_address = clear_screen = parm_down_cursor =
353 cursor_up = cursor_down = NULL;
354 cursor_home = carriage_return;
355 lines = 1;
356 }
357