xref: /freebsd/contrib/ncurses/progs/tput.c (revision aa0a1e58) 
1 /****************************************************************************
2  * Copyright (c) 1998-2007,2008 Free Software Foundation, Inc.              *
3  *                                                                          *
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5  * copy of this software and associated documentation files (the            *
6  * "Software"), to deal in the Software without restriction, including      *
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9  * copies of the Software, and to permit persons to whom the Software is    *
10  * furnished to do so, subject to the following conditions:                 *
11  *                                                                          *
12  * The above copyright notice and this permission notice shall be included  *
13  * in all copies or substantial portions of the Software.                   *
14  *                                                                          *
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16  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
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21  * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
22  *                                                                          *
23  * Except as contained in this notice, the name(s) of the above copyright   *
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28 
29 /****************************************************************************
30  *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
31  *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
32  ****************************************************************************/
33 
34 /*
35  * tput.c -- shellscript access to terminal capabilities
36  *
37  * by Eric S. Raymond <esr@snark.thyrsus.com>, portions based on code from
38  * Ross Ridge's mytinfo package.
39  */
40 
41 #define USE_LIBTINFO
42 #include <progs.priv.h>
43 
44 #if !PURE_TERMINFO
45 #include <dump_entry.h>
46 #include <termsort.c>
47 #endif
48 #include <transform.h>
49 
50 MODULE_ID("$Id: tput.c,v 1.42 2008/07/13 11:05:12 tom Exp $")
51 
52 #define PUTS(s)		fputs(s, stdout)
53 #define PUTCHAR(c)	putchar(c)
54 #define FLUSH		fflush(stdout)
55 
56 typedef enum {
57     Numbers = 0
58     ,Num_Str
59     ,Num_Str_Str
60 } TParams;
61 
62 static char *prg_name;
63 static bool is_init = FALSE;
64 static bool is_reset = FALSE;
65 
66 static void
67 quit(int status, const char *fmt,...)
68 {
69     va_list argp;
70 
71     va_start(argp, fmt);
72     fprintf(stderr, "%s: ", prg_name);
73     vfprintf(stderr, fmt, argp);
74     fprintf(stderr, "\n");
75     va_end(argp);
76     ExitProgram(status);
77 }
78 
79 static void
80 usage(void)
81 {
82     fprintf(stderr, "usage: %s [-V] [-S] [-T term] capname\n", prg_name);
83     ExitProgram(EXIT_FAILURE);
84 }
85 
86 static void
87 check_aliases(const char *name)
88 {
89     is_init = (strcmp(name, PROG_INIT) == 0);
90     is_reset = (strcmp(name, PROG_RESET) == 0);
91 }
92 
93 /*
94  * Lookup the type of call we should make to tparm().  This ignores the actual
95  * terminfo capability (bad, because it is not extensible), but makes this
96  * code portable to platforms where sizeof(int) != sizeof(char *).
97  *
98  * FIXME: If we want extensibility, analyze the capability string as we do
99  * in tparm() to decide how to parse the varargs list.
100  */
101 static TParams
102 tparm_type(const char *name)
103 {
104 #define TD(code, longname, ti, tc) {code,longname},{code,ti},{code,tc}
105     TParams result = Numbers;
106     /* *INDENT-OFF* */
107     static const struct {
108 	TParams code;
109 	const char *name;
110     } table[] = {
111 	TD(Num_Str,	"pkey_key",	"pfkey",	"pk"),
112 	TD(Num_Str,	"pkey_local",	"pfloc",	"pl"),
113 	TD(Num_Str,	"pkey_xmit",	"pfx",		"px"),
114 	TD(Num_Str,	"plab_norm",	"pln",		"pn"),
115 	TD(Num_Str_Str, "pkey_plab",	"pfxl",		"xl"),
116     };
117     /* *INDENT-ON* */
118 
119     unsigned n;
120     for (n = 0; n < SIZEOF(table); n++) {
121 	if (!strcmp(name, table[n].name)) {
122 	    result = table[n].code;
123 	    break;
124 	}
125     }
126     return result;
127 }
128 
129 static int
130 exit_code(int token, int value)
131 {
132     int result = 99;
133 
134     switch (token) {
135     case BOOLEAN:
136 	result = !value;	/* TRUE=0, FALSE=1 */
137 	break;
138     case NUMBER:
139 	result = 0;		/* always zero */
140 	break;
141     case STRING:
142 	result = value;		/* 0=normal, 1=missing */
143 	break;
144     }
145     return result;
146 }
147 
148 static int
149 tput(int argc, char *argv[])
150 {
151     NCURSES_CONST char *name;
152     char *s;
153     int i, j, c;
154     int status;
155     FILE *f;
156 
157     if ((name = argv[0]) == 0)
158 	name = "";
159     check_aliases(name);
160     if (is_reset || is_init) {
161 	if (init_prog != 0) {
162 	    system(init_prog);
163 	}
164 	FLUSH;
165 
166 	if (is_reset && reset_1string != 0) {
167 	    PUTS(reset_1string);
168 	} else if (init_1string != 0) {
169 	    PUTS(init_1string);
170 	}
171 	FLUSH;
172 
173 	if (is_reset && reset_2string != 0) {
174 	    PUTS(reset_2string);
175 	} else if (init_2string != 0) {
176 	    PUTS(init_2string);
177 	}
178 	FLUSH;
179 
180 #ifdef set_lr_margin
181 	if (set_lr_margin != 0) {
182 	    PUTS(TPARM_2(set_lr_margin, 0, columns - 1));
183 	} else
184 #endif
185 #ifdef set_left_margin_parm
186 	    if (set_left_margin_parm != 0
187 		&& set_right_margin_parm != 0) {
188 	    PUTS(TPARM_1(set_left_margin_parm, 0));
189 	    PUTS(TPARM_1(set_right_margin_parm, columns - 1));
190 	} else
191 #endif
192 	    if (clear_margins != 0
193 		&& set_left_margin != 0
194 		&& set_right_margin != 0) {
195 	    PUTS(clear_margins);
196 	    if (carriage_return != 0) {
197 		PUTS(carriage_return);
198 	    } else {
199 		PUTCHAR('\r');
200 	    }
201 	    PUTS(set_left_margin);
202 	    if (parm_right_cursor) {
203 		PUTS(TPARM_1(parm_right_cursor, columns - 1));
204 	    } else {
205 		for (i = 0; i < columns - 1; i++) {
206 		    PUTCHAR(' ');
207 		}
208 	    }
209 	    PUTS(set_right_margin);
210 	    if (carriage_return != 0) {
211 		PUTS(carriage_return);
212 	    } else {
213 		PUTCHAR('\r');
214 	    }
215 	}
216 	FLUSH;
217 
218 	if (init_tabs != 8) {
219 	    if (clear_all_tabs != 0 && set_tab != 0) {
220 		for (i = 0; i < columns - 1; i += 8) {
221 		    if (parm_right_cursor) {
222 			PUTS(TPARM_1(parm_right_cursor, 8));
223 		    } else {
224 			for (j = 0; j < 8; j++)
225 			    PUTCHAR(' ');
226 		    }
227 		    PUTS(set_tab);
228 		}
229 		FLUSH;
230 	    }
231 	}
232 
233 	if (is_reset && reset_file != 0) {
234 	    f = fopen(reset_file, "r");
235 	    if (f == 0) {
236 		quit(4 + errno, "Can't open reset_file: '%s'", reset_file);
237 	    }
238 	    while ((c = fgetc(f)) != EOF) {
239 		PUTCHAR(c);
240 	    }
241 	    fclose(f);
242 	} else if (init_file != 0) {
243 	    f = fopen(init_file, "r");
244 	    if (f == 0) {
245 		quit(4 + errno, "Can't open init_file: '%s'", init_file);
246 	    }
247 	    while ((c = fgetc(f)) != EOF) {
248 		PUTCHAR(c);
249 	    }
250 	    fclose(f);
251 	}
252 	FLUSH;
253 
254 	if (is_reset && reset_3string != 0) {
255 	    PUTS(reset_3string);
256 	} else if (init_3string != 0) {
257 	    PUTS(init_3string);
258 	}
259 	FLUSH;
260 	return 0;
261     }
262 
263     if (strcmp(name, "longname") == 0) {
264 	PUTS(longname());
265 	return 0;
266     }
267 #if !PURE_TERMINFO
268     {
269 	const struct name_table_entry *np;
270 
271 	if ((np = _nc_find_entry(name, _nc_get_hash_table(1))) != 0)
272 	    switch (np->nte_type) {
273 	    case BOOLEAN:
274 		if (bool_from_termcap[np->nte_index])
275 		    name = boolnames[np->nte_index];
276 		break;
277 
278 	    case NUMBER:
279 		if (num_from_termcap[np->nte_index])
280 		    name = numnames[np->nte_index];
281 		break;
282 
283 	    case STRING:
284 		if (str_from_termcap[np->nte_index])
285 		    name = strnames[np->nte_index];
286 		break;
287 	    }
288     }
289 #endif
290 
291     if ((status = tigetflag(name)) != -1) {
292 	return exit_code(BOOLEAN, status);
293     } else if ((status = tigetnum(name)) != CANCELLED_NUMERIC) {
294 	(void) printf("%d\n", status);
295 	return exit_code(NUMBER, 0);
296     } else if ((s = tigetstr(name)) == CANCELLED_STRING) {
297 	quit(4, "unknown terminfo capability '%s'", name);
298     } else if (s != ABSENT_STRING) {
299 	if (argc > 1) {
300 	    int k;
301 	    int popcount;
302 	    long numbers[1 + NUM_PARM];
303 	    char *strings[1 + NUM_PARM];
304 	    char *p_is_s[NUM_PARM];
305 
306 	    /* Nasty hack time. The tparm function needs to see numeric
307 	     * parameters as numbers, not as pointers to their string
308 	     * representations
309 	     */
310 
311 	    for (k = 1; k < argc; k++) {
312 		char *tmp = 0;
313 		strings[k] = argv[k];
314 		numbers[k] = strtol(argv[k], &tmp, 0);
315 		if (tmp == 0 || *tmp != 0)
316 		    numbers[k] = 0;
317 	    }
318 	    for (k = argc; k <= NUM_PARM; k++) {
319 		numbers[k] = 0;
320 		strings[k] = 0;
321 	    }
322 
323 	    switch (tparm_type(name)) {
324 	    case Num_Str:
325 		s = TPARM_2(s, numbers[1], strings[2]);
326 		break;
327 	    case Num_Str_Str:
328 		s = TPARM_3(s, numbers[1], strings[2], strings[3]);
329 		break;
330 	    case Numbers:
331 	    default:
332 		(void) _nc_tparm_analyze(s, p_is_s, &popcount);
333 #define myParam(n) (p_is_s[n - 1] != 0 ? ((long) strings[n]) : numbers[n])
334 		s = TPARM_9(s,
335 			    myParam(1),
336 			    myParam(2),
337 			    myParam(3),
338 			    myParam(4),
339 			    myParam(5),
340 			    myParam(6),
341 			    myParam(7),
342 			    myParam(8),
343 			    myParam(9));
344 		break;
345 	    }
346 	}
347 
348 	/* use putp() in order to perform padding */
349 	putp(s);
350 	return exit_code(STRING, 0);
351     }
352     return exit_code(STRING, 1);
353 }
354 
355 int
356 main(int argc, char **argv)
357 {
358     char *term;
359     int errret;
360     bool cmdline = TRUE;
361     int c;
362     char buf[BUFSIZ];
363     int result = 0;
364 
365     check_aliases(prg_name = _nc_rootname(argv[0]));
366 
367     term = getenv("TERM");
368 
369     while ((c = getopt(argc, argv, "ST:V")) != -1) {
370 	switch (c) {
371 	case 'S':
372 	    cmdline = FALSE;
373 	    break;
374 	case 'T':
375 	    use_env(FALSE);
376 	    term = optarg;
377 	    break;
378 	case 'V':
379 	    puts(curses_version());
380 	    ExitProgram(EXIT_SUCCESS);
381 	default:
382 	    usage();
383 	    /* NOTREACHED */
384 	}
385     }
386 
387     /*
388      * Modify the argument list to omit the options we processed.
389      */
390     if (is_reset || is_init) {
391 	if (optind-- < argc) {
392 	    argc -= optind;
393 	    argv += optind;
394 	}
395 	argv[0] = prg_name;
396     } else {
397 	argc -= optind;
398 	argv += optind;
399     }
400 
401     if (term == 0 || *term == '\0')
402 	quit(2, "No value for $TERM and no -T specified");
403 
404     if (setupterm(term, STDOUT_FILENO, &errret) != OK && errret <= 0)
405 	quit(3, "unknown terminal \"%s\"", term);
406 
407     if (cmdline) {
408 	if ((argc <= 0) && !is_reset && !is_init)
409 	    usage();
410 	ExitProgram(tput(argc, argv));
411     }
412 
413     while (fgets(buf, sizeof(buf), stdin) != 0) {
414 	char *argvec[16];	/* command, 9 parms, null, & slop */
415 	int argnum = 0;
416 	char *cp;
417 
418 	/* crack the argument list into a dope vector */
419 	for (cp = buf; *cp; cp++) {
420 	    if (isspace(UChar(*cp))) {
421 		*cp = '\0';
422 	    } else if (cp == buf || cp[-1] == 0) {
423 		argvec[argnum++] = cp;
424 		if (argnum >= (int) SIZEOF(argvec) - 1)
425 		    break;
426 	    }
427 	}
428 	argvec[argnum] = 0;
429 
430 	if (argnum != 0
431 	    && tput(argnum, argvec) != 0) {
432 	    if (result == 0)
433 		result = 4;	/* will return value >4 */
434 	    ++result;
435 	}
436     }
437 
438     ExitProgram(result);
439 }
440