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-rw-r--r--lib/libcurses/setterm.c232
1 files changed, 232 insertions, 0 deletions
diff --git a/lib/libcurses/setterm.c b/lib/libcurses/setterm.c
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+++ b/lib/libcurses/setterm.c
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+/*
+ * Copyright (c) 1981, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)setterm.c 8.7 (Berkeley) 7/27/94";
+#endif /* not lint */
+
+#include <sys/ioctl.h> /* TIOCGWINSZ on old systems. */
+
+#include <stdlib.h>
+#include <string.h>
+#include <termios.h>
+#include <unistd.h>
+
+#include "curses.h"
+
+static void zap __P((void));
+
+static char *sflags[] = {
+ /* am bs da eo hc in mi ms */
+ &AM, &BS, &DA, &EO, &HC, &IN, &MI, &MS,
+ /* nc ns os ul xb xn xt xs xx */
+ &NC, &NS, &OS, &UL, &XB, &XN, &XT, &XS, &XX
+ };
+
+static char *_PC,
+ **sstrs[] = {
+ /* AL bc bt cd ce cl cm cr cs */
+ &AL, &BC, &BT, &CD, &CE, &CL, &CM, &CR, &CS,
+ /* dc DL dm do ed ei k0 k1 k2 */
+ &DC, &DL, &DM, &DO, &ED, &EI, &K0, &K1, &K2,
+ /* k3 k4 k5 k6 k7 k8 k9 ho ic */
+ &K3, &K4, &K5, &K6, &K7, &K8, &K9, &HO, &IC,
+ /* im ip kd ke kh kl kr ks ku */
+ &IM, &IP, &KD, &KE, &KH, &KL, &KR, &KS, &KU,
+ /* ll ma nd nl pc rc sc se SF */
+ &LL, &MA, &ND, &NL, &_PC, &RC, &SC, &SE, &SF,
+ /* so SR ta te ti uc ue up us */
+ &SO, &SR, &TA, &TE, &TI, &UC, &UE, &UP, &US,
+ /* vb vs ve al dl sf sr AL */
+ &VB, &VS, &VE, &al, &dl, &sf, &sr, &AL_PARM,
+ /* DL UP DO LE */
+ &DL_PARM, &UP_PARM, &DOWN_PARM, &LEFT_PARM,
+ /* RI */
+ &RIGHT_PARM,
+ };
+
+static char *aoftspace; /* Address of _tspace for relocation */
+static char tspace[2048]; /* Space for capability strings */
+
+char *ttytype;
+
+int
+setterm(type)
+ register char *type;
+{
+ static char genbuf[1024];
+ static char __ttytype[1024];
+ register int unknown;
+ struct winsize win;
+ char *p;
+
+#ifdef DEBUG
+ __CTRACE("setterm: (\"%s\")\nLINES = %d, COLS = %d\n",
+ type, LINES, COLS);
+#endif
+ if (type[0] == '\0')
+ type = "xx";
+ unknown = 0;
+ if (tgetent(genbuf, type) != 1) {
+ unknown++;
+ strcpy(genbuf, "xx|dumb:");
+ }
+#ifdef DEBUG
+ __CTRACE("setterm: tty = %s\n", type);
+#endif
+
+ /* Try TIOCGWINSZ, and, if it fails, the termcap entry. */
+ if (ioctl(STDERR_FILENO, TIOCGWINSZ, &win) != -1 &&
+ win.ws_row != 0 && win.ws_col != 0) {
+ LINES = win.ws_row;
+ COLS = win.ws_col;
+ } else {
+ LINES = tgetnum("li");
+ COLS = tgetnum("co");
+ }
+
+ /* POSIX 1003.2 requires that the environment override. */
+ if ((p = getenv("LINES")) != NULL)
+ LINES = strtol(p, NULL, 10);
+ if ((p = getenv("COLUMNS")) != NULL)
+ COLS = strtol(p, NULL, 10);
+
+ /*
+ * Want cols > 4, otherwise things will fail.
+ */
+ if (COLS <= 4)
+ return (ERR);
+
+#ifdef DEBUG
+ __CTRACE("setterm: LINES = %d, COLS = %d\n", LINES, COLS);
+#endif
+ aoftspace = tspace;
+ zap(); /* Get terminal description. */
+
+ /* If we can't tab, we can't backtab, either. */
+ if (!GT)
+ BT = NULL;
+
+ /*
+ * Test for cursor motion capbility.
+ *
+ * XXX
+ * This is truly stupid -- tgoto returns "OOPS" if it can't
+ * do cursor motions.
+ */
+ if (tgoto(CM, 0, 0)[0] == 'O') {
+ CA = 0;
+ CM = 0;
+ } else
+ CA = 1;
+
+ PC = _PC ? _PC[0] : 0;
+ aoftspace = tspace;
+ ttytype = longname(genbuf, __ttytype);
+
+ /* If no scrolling commands, no quick change. */
+ __noqch =
+ (CS == NULL || HO == NULL ||
+ SF == NULL && sf == NULL || SR == NULL && sr == NULL) &&
+ (AL == NULL && al == NULL || DL == NULL && dl == NULL);
+
+ return (unknown ? ERR : OK);
+}
+
+/*
+ * zap --
+ * Gets all the terminal flags from the termcap database.
+ */
+static void
+zap()
+{
+ register char *namp, ***sp;
+ register char **fp;
+ char tmp[3];
+#ifdef DEBUG
+ register char *cp;
+#endif
+ tmp[2] = '\0';
+
+ namp = "ambsdaeohcinmimsncnsosulxbxnxtxsxx";
+ fp = sflags;
+ do {
+ *tmp = *namp;
+ *(tmp + 1) = *(namp + 1);
+ *(*fp++) = tgetflag(tmp);
+#ifdef DEBUG
+ __CTRACE("2.2s = %s\n", namp, *fp[-1] ? "TRUE" : "FALSE");
+#endif
+ namp += 2;
+
+ } while (*namp);
+ namp = "ALbcbtcdceclcmcrcsdcDLdmdoedeik0k1k2k3k4k5k6k7k8k9hoicimipkdkekhklkrkskullmandnlpcrcscseSFsoSRtatetiucueupusvbvsvealdlsfsrALDLUPDOLERI";
+ sp = sstrs;
+ do {
+ *tmp = *namp;
+ *(tmp + 1) = *(namp + 1);
+ *(*sp++) = tgetstr(tmp, &aoftspace);
+#ifdef DEBUG
+ __CTRACE("2.2s = %s", namp, *sp[-1] == NULL ? "NULL\n" : "\"");
+ if (*sp[-1] != NULL) {
+ for (cp = *sp[-1]; *cp; cp++)
+ __CTRACE("%s", unctrl(*cp));
+ __CTRACE("\"\n");
+ }
+#endif
+ namp += 2;
+ } while (*namp);
+ if (XS)
+ SO = SE = NULL;
+ else {
+ if (tgetnum("sg") > 0)
+ SO = NULL;
+ if (tgetnum("ug") > 0)
+ US = NULL;
+ if (!SO && US) {
+ SO = US;
+ SE = UE;
+ }
+ }
+}
+
+/*
+ * getcap --
+ * Return a capability from termcap.
+ */
+char *
+getcap(name)
+ char *name;
+{
+ return (tgetstr(name, &aoftspace));
+}
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