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Annotation of src/usr.bin/tput/tput.c, Revision 1.2

1.2     ! deraadt     1: /*     $OpenBSD: tput.c,v 1.8 1995/08/31 22:11:37 jtc Exp $    */
1.1       deraadt     2: /*     $NetBSD: tput.c,v 1.8 1995/08/31 22:11:37 jtc Exp $     */
                      3:
                      4: /*-
                      5:  * Copyright (c) 1980, 1988, 1993
                      6:  *     The Regents of the University of California.  All rights reserved.
                      7:  *
                      8:  * Redistribution and use in source and binary forms, with or without
                      9:  * modification, are permitted provided that the following conditions
                     10:  * are met:
                     11:  * 1. Redistributions of source code must retain the above copyright
                     12:  *    notice, this list of conditions and the following disclaimer.
                     13:  * 2. Redistributions in binary form must reproduce the above copyright
                     14:  *    notice, this list of conditions and the following disclaimer in the
                     15:  *    documentation and/or other materials provided with the distribution.
                     16:  * 3. All advertising materials mentioning features or use of this software
                     17:  *    must display the following acknowledgement:
                     18:  *     This product includes software developed by the University of
                     19:  *     California, Berkeley and its contributors.
                     20:  * 4. Neither the name of the University nor the names of its contributors
                     21:  *    may be used to endorse or promote products derived from this software
                     22:  *    without specific prior written permission.
                     23:  *
                     24:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     25:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     26:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     27:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     28:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     29:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     30:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     31:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     32:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     33:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     34:  * SUCH DAMAGE.
                     35:  */
                     36:
                     37: #ifndef lint
                     38: static char copyright[] =
                     39: "@(#) Copyright (c) 1980, 1988, 1993\n\
                     40:        The Regents of the University of California.  All rights reserved.\n";
                     41: #endif /* not lint */
                     42:
                     43: #ifndef lint
                     44: #if 0
                     45: static char sccsid[] = "@(#)tput.c     8.3 (Berkeley) 4/28/95";
                     46: #endif
1.2     ! deraadt    47: static char rcsid[] = "$OpenBSD: tput.c,v 1.8 1995/08/31 22:11:37 jtc Exp $";
1.1       deraadt    48: #endif /* not lint */
                     49:
                     50: #include <termios.h>
                     51:
                     52: #include <err.h>
                     53: #include <curses.h>
                     54: #include <stdio.h>
                     55: #include <stdlib.h>
                     56: #include <unistd.h>
                     57:
                     58: static void   prlongname __P((char *));
                     59: static void   setospeed __P((void));
                     60: static void   outc __P((int));
                     61: static void   usage __P((void));
                     62: static char **process __P((char *, char *, char **));
                     63:
                     64: int
                     65: main(argc, argv)
                     66:        int argc;
                     67:        char **argv;
                     68: {
                     69:        extern char *optarg;
                     70:        extern int optind;
                     71:        int ch, exitval, n;
                     72:        char *cptr, *p, *term, buf[1024], tbuf[1024];
                     73:
                     74:        term = NULL;
                     75:        while ((ch = getopt(argc, argv, "T:")) != EOF)
                     76:                switch(ch) {
                     77:                case 'T':
                     78:                        term = optarg;
                     79:                        break;
                     80:                case '?':
                     81:                default:
                     82:                        usage();
                     83:                }
                     84:        argc -= optind;
                     85:        argv += optind;
                     86:
                     87:        if (!term && !(term = getenv("TERM")))
                     88: errx(2, "no terminal type specified and no TERM environmental variable.");
                     89:        if (tgetent(tbuf, term) != 1)
                     90:                err(2, "tgetent failure");
                     91:        setospeed();
                     92:        for (exitval = 0; (p = *argv) != NULL; ++argv) {
                     93:                switch (*p) {
                     94:                case 'c':
                     95:                        if (!strcmp(p, "clear"))
                     96:                                p = "cl";
                     97:                        break;
                     98:                case 'i':
                     99:                        if (!strcmp(p, "init"))
                    100:                                p = "is";
                    101:                        break;
                    102:                case 'l':
                    103:                        if (!strcmp(p, "longname")) {
                    104:                                prlongname(tbuf);
                    105:                                continue;
                    106:                        }
                    107:                        break;
                    108:                case 'r':
                    109:                        if (!strcmp(p, "reset"))
                    110:                                p = "rs";
                    111:                        break;
                    112:                }
                    113:                cptr = buf;
                    114:                if (tgetstr(p, &cptr))
                    115:                        argv = process(p, buf, argv);
                    116:                else if ((n = tgetnum(p)) != -1)
                    117:                        (void)printf("%d\n", n);
                    118:                else
                    119:                        exitval = !tgetflag(p);
                    120:
                    121:                if (argv == NULL)
                    122:                        break;
                    123:        }
                    124:        exit(argv ? exitval : 2);
                    125: }
                    126:
                    127: static void
                    128: prlongname(buf)
                    129:        char *buf;
                    130: {
                    131:        int savech;
                    132:        char *p, *savep;
                    133:
                    134:        for (p = buf; *p && *p != ':'; ++p)
                    135:                continue;
                    136:        savech = *(savep = p);
                    137:        for (*p = '\0'; p >= buf && *p != '|'; --p)
                    138:                continue;
                    139:        (void)printf("%s\n", p + 1);
                    140:        *savep = savech;
                    141: }
                    142:
                    143: static char **
                    144: process(cap, str, argv)
                    145:        char *cap, *str, **argv;
                    146: {
                    147:        static char errfew[] =
                    148:            "not enough arguments (%d) for capability `%s'";
                    149:        static char errmany[] =
                    150:            "too many arguments (%d) for capability `%s'";
                    151:        static char erresc[] =
                    152:            "unknown %% escape `%c' for capability `%s'";
                    153:        char *cp;
                    154:        int arg_need, arg_rows, arg_cols;
                    155:
                    156:        /* Count how many values we need for this capability. */
                    157:        for (cp = str, arg_need = 0; *cp != '\0'; cp++)
                    158:                if (*cp == '%')
                    159:                            switch (*++cp) {
                    160:                            case 'd':
                    161:                            case '2':
                    162:                            case '3':
                    163:                            case '.':
                    164:                            case '+':
                    165:                                    arg_need++;
                    166:                                    break;
                    167:                            case '%':
                    168:                            case '>':
                    169:                            case 'i':
                    170:                            case 'r':
                    171:                            case 'n':
                    172:                            case 'B':
                    173:                            case 'D':
                    174:                                    break;
                    175:                            default:
                    176:                                /*
                    177:                                 * hpux has lot's of them, but we complain
                    178:                                 */
                    179:                                 errx(2, erresc, *cp, cap);
                    180:                            }
                    181:
                    182:        /* And print them. */
                    183:        switch (arg_need) {
                    184:        case 0:
                    185:                (void)tputs(str, 1, outc);
                    186:                break;
                    187:        case 1:
                    188:                arg_cols = 0;
                    189:
                    190:                if (*++argv == NULL || *argv[0] == '\0')
                    191:                        errx(2, errfew, 1, cap);
                    192:                arg_rows = atoi(*argv);
                    193:
                    194:                (void)tputs(tgoto(str, arg_cols, arg_rows), 1, outc);
                    195:                break;
                    196:        case 2:
                    197:                if (*++argv == NULL || *argv[0] == '\0')
                    198:                        errx(2, errfew, 2, cap);
                    199:                arg_rows = atoi(*argv);
                    200:
                    201:                if (*++argv == NULL || *argv[0] == '\0')
                    202:                        errx(2, errfew, 2, cap);
                    203:                arg_cols = atoi(*argv);
                    204:
                    205:                (void) tputs(tgoto(str, arg_cols, arg_rows), arg_rows, outc);
                    206:                break;
                    207:
                    208:        default:
                    209:                errx(2, errmany, arg_need, cap);
                    210:        }
                    211:        return (argv);
                    212: }
                    213:
                    214: static void
                    215: setospeed()
                    216: {
                    217: #undef ospeed
                    218:        extern short ospeed;
                    219:        struct termios t;
                    220:
                    221:        if (tcgetattr(STDOUT_FILENO, &t) != -1)
                    222:                ospeed = 0;
                    223:        else
                    224:                ospeed = cfgetospeed(&t);
                    225: }
                    226:
                    227: static void
                    228: outc(c)
                    229:        int c;
                    230: {
                    231:        (void)putchar(c);
                    232: }
                    233:
                    234: static void
                    235: usage()
                    236: {
                    237:        (void)fprintf(stderr, "usage: tput [-T term] attribute ...\n");
                    238:        exit(1);
                    239: }