ncurses-4.2-980718

1 files changed, 382 insertions, 0 deletions

diff --git a/lib/libcurses/lib_setup.c b/lib/libcurses/lib_setup.c
new file mode 100644
index 00000000000..b382ddb57c9
--- /dev/null
+++ b/lib/libcurses/lib_setup.c
@@ -0,0 +1,382 @@
+/*	$OpenBSD: lib_setup.c,v 1.1 1998/07/23 21:19:24 millert Exp $	*/
+
+/****************************************************************************
+ * Copyright (c) 1998 Free Software Foundation, Inc.                        *
+ *                                                                          *
+ * Permission is hereby granted, free of charge, to any person obtaining a  *
+ * copy of this software and associated documentation files (the            *
+ * "Software"), to deal in the Software without restriction, including      *
+ * without limitation the rights to use, copy, modify, merge, publish,      *
+ * distribute, distribute with modifications, sublicense, and/or sell       *
+ * copies of the Software, and to permit persons to whom the Software is    *
+ * furnished to do so, subject to the following conditions:                 *
+ *                                                                          *
+ * The above copyright notice and this permission notice shall be included  *
+ * in all copies or substantial portions of the Software.                   *
+ *                                                                          *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
+ * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
+ * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
+ *                                                                          *
+ * Except as contained in this notice, the name(s) of the above copyright   *
+ * holders shall not be used in advertising or otherwise to promote the     *
+ * sale, use or other dealings in this Software without prior written       *
+ * authorization.                                                           *
+ ****************************************************************************/
+
+/****************************************************************************
+ *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
+ *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
+ ****************************************************************************/
+
+
+/*
+ * Terminal setup routines common to termcap and terminfo:
+ *
+ *		use_env(bool)
+ *		setupterm(char *, int, int *)
+ */
+
+#include <curses.priv.h>
+#include <tic.h>	/* for MAX_NAME_SIZE */
+
+#if defined(SVR4_TERMIO) && !defined(_POSIX_SOURCE)
+#define _POSIX_SOURCE
+#endif
+
+#include <term.h>	/* lines, columns, cur_term */
+
+MODULE_ID("$From: lib_setup.c,v 1.38 1998/04/04 19:08:22 juergen Exp $")
+
+/****************************************************************************
+ *
+ * Terminal size computation
+ *
+ ****************************************************************************/
+
+#if HAVE_SIZECHANGE
+# if !defined(sun) || !HAVE_TERMIOS_H
+#  if HAVE_SYS_IOCTL_H
+#   include <sys/ioctl.h>
+#  endif
+# endif
+#endif
+
+#if NEED_PTEM_H
+ /* On SCO, they neglected to define struct winsize in termios.h -- it's only
+  * in termio.h and ptem.h (the former conflicts with other definitions).
+  */
+# include <sys/stream.h>
+# include <sys/ptem.h>
+#endif
+
+/*
+ * SCO defines TIOCGSIZE and the corresponding struct.  Other systems (SunOS,
+ * Solaris, IRIX) define TIOCGWINSZ and struct winsize.
+ */
+#ifdef TIOCGSIZE
+# define IOCTL_WINSIZE TIOCGSIZE
+# define STRUCT_WINSIZE struct ttysize
+# define WINSIZE_ROWS(n) (int)n.ts_lines
+# define WINSIZE_COLS(n) (int)n.ts_cols
+#else
+# ifdef TIOCGWINSZ
+#  define IOCTL_WINSIZE TIOCGWINSZ
+#  define STRUCT_WINSIZE struct winsize
+#  define WINSIZE_ROWS(n) (int)n.ws_row
+#  define WINSIZE_COLS(n) (int)n.ws_col
+# endif
+#endif
+
+extern TERMINAL *cur_term;
+
+static int _use_env = TRUE;
+
+static void do_prototype(void);
+
+void use_env(bool f)
+{
+	_use_env = f;
+}
+
+int LINES, COLS, TABSIZE;
+
+static void _nc_get_screensize(int *linep, int *colp)
+/* Obtain lines/columns values from the environment and/or terminfo entry */
+{
+char	*rows, *cols, *p;
+long	l;
+
+	/* figure out the size of the screen */
+	T(("screen size: terminfo lines = %d columns = %d", lines, columns));
+
+	if (!_use_env)
+	{
+	    *linep = (int)lines;
+	    *colp  = (int)columns;
+	}
+	else	/* usually want to query LINES and COLUMNS from environment */
+	{
+	    *linep = *colp = 0;
+
+	    /* first, look for environment variables */
+	    if ((rows = getenv("LINES")) != 0) {
+		l = strtol(rows, &p, 10);
+		if (p != rows && *p == '\0' && l != LONG_MIN && l <= INT_MAX)
+		    *linep = (int)l;
+	    }
+	    if ((cols = getenv("COLUMNS")) != 0) {
+		l = strtol(cols, &p, 10);
+		if (p != cols && *p == '\0' && l != LONG_MIN && l <= INT_MAX)
+		    *colp = (int)l;
+	    }
+	    T(("screen size: environment LINES = %d COLUMNS = %d",*linep,*colp));
+
+#if HAVE_SIZECHANGE
+	    /* if that didn't work, maybe we can try asking the OS */
+	    if (*linep <= 0 || *colp <= 0)
+	    {
+		if (isatty(cur_term->Filedes))
+		{
+		    STRUCT_WINSIZE size;
+
+		    errno = 0;
+		    do {
+			if (ioctl(cur_term->Filedes, IOCTL_WINSIZE, &size) < 0
+				&& errno != EINTR)
+			    goto failure;
+		    } while
+			(errno == EINTR);
+
+		    *linep = WINSIZE_ROWS(size);
+		    *colp  = WINSIZE_COLS(size);
+		}
+		/* FALLTHRU */
+	    failure:;
+	    }
+#endif /* HAVE_SIZECHANGE */
+
+	    /* if we can't get dynamic info about the size, use static */
+	    if (*linep <= 0 || *colp <= 0)
+		if (lines > 0 && columns > 0)
+		{
+		    *linep = (int)lines;
+		    *colp  = (int)columns;
+		}
+
+	    /* the ultimate fallback, assume fixed 24x80 size */
+	    if (*linep <= 0 || *colp <= 0)
+	    {
+		*linep = 24;
+		*colp  = 80;
+	    }
+
+	    /*
+	     * Put the derived values back in the screen-size caps, so
+	     * tigetnum() and tgetnum() will do the right thing.
+	     */
+	    lines   = (short)(*linep);
+	    columns = (short)(*colp);
+	}
+
+	T(("screen size is %dx%d", *linep, *colp));
+
+#ifdef init_tabs
+	if (init_tabs != -1)
+		TABSIZE = (int)init_tabs;
+	else
+#endif /* init_tabs */
+		TABSIZE = 8;
+	T(("TABSIZE = %d", TABSIZE));
+
+}
+
+#if USE_SIZECHANGE
+void _nc_update_screensize(void)
+{
+	int my_lines, my_cols;
+
+	_nc_get_screensize(&my_lines, &my_cols);
+	if (SP != 0 && SP->_resize != 0)
+		SP->_resize(my_lines, my_cols);
+}
+#endif
+
+/****************************************************************************
+ *
+ * Terminal setup
+ *
+ ****************************************************************************/
+
+#define ret_error(code, fmt, arg)	if (errret) {\
+					    *errret = code;\
+					    returnCode(ERR);\
+					} else {\
+					    fprintf(stderr, fmt, arg);\
+					    exit(EXIT_FAILURE);\
+					}
+
+#define ret_error0(code, msg)		if (errret) {\
+					    *errret = code;\
+					    returnCode(ERR);\
+					} else {\
+					    fprintf(stderr, msg);\
+					    exit(EXIT_FAILURE);\
+					}
+
+#if USE_DATABASE
+static int grab_entry(const char *const tn, TERMTYPE *const tp)
+/* return 1 if entry found, 0 if not found, -1 if database not accessible */
+{
+	char	filename[PATH_MAX];
+	int	status;
+	int	_nc_read_bsd_terminfo_entry(const char *, TERMTYPE *); /* XXX */
+
+#ifdef __OpenBSD__
+	if ((status = _nc_read_bsd_terminfo_entry(tn, tp)) == 1)
+	    return(1);
+#endif /* __OpenBSD__ */
+
+	if ((status = _nc_read_entry(tn, filename, tp)) == 1)
+	    return(1);
+
+#ifndef PURE_TERMINFO
+	/*
+	 * Try falling back on the termcap file.  Note: allowing this call
+	 * links the entire terminfo/termcap compiler into the startup code.
+	 * It's preferable to build a real terminfo database and use that.
+	 */
+	status = _nc_read_termcap_entry(tn, tp);
+#endif /* PURE_TERMINFO */
+
+	return(status);
+}
+#endif
+
+char ttytype[NAMESIZE];
+
+/*
+ *	setupterm(termname, Filedes, errret)
+ *
+ *	Find and read the appropriate object file for the terminal
+ *	Make cur_term point to the structure.
+ *
+ */
+
+int setupterm(const char *tname, int Filedes, int *errret)
+{
+struct term	*term_ptr;
+int status;
+
+	T((T_CALLED("setupterm(\"%s\",%d,%p)"), tname, Filedes, errret));
+
+	if (tname == 0) {
+		tname = getenv("TERM");
+		if (tname == 0 || *tname == '\0') {
+			ret_error0(-1, "TERM environment variable not set.\n");
+                }
+	}
+	if (strlen(tname) > MAX_NAME_SIZE) {
+		ret_error(-1, "TERM environment must be <= %d characters.\n",
+		    MAX_NAME_SIZE);
+	}
+
+	T(("your terminal name is %s", tname));
+
+	term_ptr = typeCalloc(TERMINAL, 1);
+
+	if (term_ptr == 0) {
+		ret_error0(-1, "Not enough memory to create terminal structure.\n") ;
+        }
+#if USE_DATABASE
+	status = grab_entry(tname, &term_ptr->type);
+#else
+	status = 0;
+#endif
+
+	/* try fallback list if entry on disk */
+	if (status != 1)
+	{
+	    const TERMTYPE	*fallback = _nc_fallback(tname);
+
+	    if (fallback)
+	    {
+		memcpy(&term_ptr->type, fallback, sizeof(TERMTYPE));
+		status = 1;
+	    }
+	}
+
+	if (status == -1)
+	{
+		ret_error0(-1, "terminals database is inaccessible\n");
+	}
+	else if (status == 0)
+	{
+		ret_error(0, "'%s': unknown terminal type.\n", tname);
+	}
+
+	set_curterm(term_ptr);
+
+	if (command_character  &&  getenv("CC"))
+		do_prototype();
+
+	strlcpy(ttytype, cur_term->type.term_names, NAMESIZE);
+
+	/*
+	 * Allow output redirection.  This is what SVr3 does.
+	 * If stdout is directed to a file, screen updates go
+	 * to standard error.
+	 */
+	if (Filedes == STDOUT_FILENO && !isatty(Filedes))
+	    Filedes = STDERR_FILENO;
+	cur_term->Filedes = Filedes;
+
+	_nc_get_screensize(&LINES, &COLS);
+
+	if (errret)
+		*errret = 1;
+
+	T((T_CREATE("screen %s %dx%d"), tname, LINES, COLS));
+
+	if (generic_type) {
+		ret_error(0, "'%s': I need something more specific.\n", tname);
+	}
+	if (hard_copy) {
+		ret_error(1, "'%s': I can't handle hardcopy terminals.\n", tname);
+	}
+	returnCode(OK);
+}
+
+/*
+**	do_prototype()
+**
+**	Take the real command character out of the CC environment variable
+**	and substitute it in for the prototype given in 'command_character'.
+**
+*/
+
+static void
+do_prototype(void)
+{
+int	i, j;
+char	CC;
+char	proto;
+char    *tmp;
+
+	tmp = getenv("CC");
+	CC = *tmp;
+	proto = *command_character;
+
+	for (i=0; i < STRCOUNT; i++) {
+		j = 0;
+		while (cur_term->type.Strings[i][j]) {
+			if (cur_term->type.Strings[i][j] == proto)
+				cur_term->type.Strings[i][j] = CC;
+			j++;
+		}
+	}
+}