Install ncurses as -lcurses and <curses.h>

Install BSD curses library as -locurses and <ocurses.h>

1 files changed, 118 insertions, 0 deletions

diff --git a/lib/libcurses/lib_twait.c b/lib/libcurses/lib_twait.c
new file mode 100644
index 00000000000..c9dee4e07be
--- /dev/null
+++ b/lib/libcurses/lib_twait.c
@@ -0,0 +1,118 @@
+
+/***************************************************************************
+*                            COPYRIGHT NOTICE                              *
+****************************************************************************
+*                ncurses is copyright (C) 1992-1995                        *
+*                          Zeyd M. Ben-Halim                               *
+*                          zmbenhal@netcom.com                             *
+*                          Eric S. Raymond                                 *
+*                          esr@snark.thyrsus.com                           *
+*                                                                          *
+*        Permission is hereby granted to reproduce and distribute ncurses  *
+*        by any means and for any fee, whether alone or as part of a       *
+*        larger distribution, in source or in binary form, PROVIDED        *
+*        this notice is included with any such distribution, and is not    *
+*        removed from any of its header files. Mention of ncurses in any   *
+*        applications linked with it is highly appreciated.                *
+*                                                                          *
+*        ncurses comes AS IS with no warranty, implied or expressed.       *
+*                                                                          *
+***************************************************************************/
+
+/*
+**	lib_twait.c
+**
+**	The routine _nc_timed_wait().
+**
+*/
+
+#include "curses.priv.h"
+
+#include <sys/types.h>		/* some systems can't live without this */
+#include <string.h>
+
+#if HAVE_SYS_TIME_H && ! SYSTEM_LOOKS_LIKE_SCO
+#include <sys/time.h>
+#endif
+
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#if HAVE_SYS_SELECT_H
+#include <sys/select.h>
+#endif
+
+/*
+ * We want to define GOOD_SELECT if the last argument of select(2) is 
+ * modified to indicate time left.  The code will deal gracefully with
+ * the other case, this is just an optimization to reduce the number
+ * of system calls per input event.
+ *
+ * In general, expect System-V-like UNIXes to have this behavior and BSD-like 
+ * ones to not have it.  Check your manual page.  If it doesn't explicitly
+ * say the last argument is modified, assume it's not.
+ * 
+ * (We'd really like configure to autodetect this, but writing a proper test
+ * turns out to be hard.)
+ */
+#if defined(linux)
+#define GOOD_SELECT
+#endif
+
+#if !HAVE_USLEEP
+int usleep(unsigned int usec)
+{
+struct timeval tval;
+
+	tval.tv_sec = usec / 1000000;
+	tval.tv_usec = usec % 1000000;
+	select(0, NULL, NULL, NULL, &tval);
+
+}
+#endif
+
+int _nc_timed_wait(int fd, int wait, int *timeleft)
+{
+int result;
+struct timeval ntimeout;
+static fd_set set;
+#if !defined(GOOD_SELECT) && HAVE_GETTIMEOFDAY
+struct timeval starttime, returntime;
+
+	 gettimeofday(&starttime, NULL);
+#endif
+
+	 FD_ZERO(&set);
+	 FD_SET(fd, &set);
+
+	 /* the units of wait are milliseconds */
+	 ntimeout.tv_sec = wait / 1000;
+	 ntimeout.tv_usec = (wait % 1000) * 1000;
+
+	 T(("start twait: sec = %ld, usec = %ld", ntimeout.tv_sec, ntimeout.tv_usec));
+
+	 result = select(fd+1, &set, NULL, NULL, &ntimeout);
+
+#if !defined(GOOD_SELECT) && HAVE_GETTIMEOFDAY
+	 gettimeofday(&returntime, NULL);
+	 ntimeout.tv_sec -= (returntime.tv_sec - starttime.tv_sec);
+	 ntimeout.tv_usec -= (returntime.tv_usec - starttime.tv_usec);
+	 if (ntimeout.tv_usec < 0 && ntimeout.tv_sec > 0) {
+		ntimeout.tv_sec--;
+		ntimeout.tv_usec += 1000000;
+	 }
+	 if (ntimeout.tv_sec < 0)
+		ntimeout.tv_sec = ntimeout.tv_usec = 0;
+#endif
+
+	 /* return approximate time left on the ntimeout, in milliseconds */
+	 if (timeleft)
+		*timeleft = (ntimeout.tv_sec * 1000) + (ntimeout.tv_usec / 1000);
+
+	 T(("end twait: returned %d, sec = %ld, usec = %ld (%d msec)",
+		 result, ntimeout.tv_sec, ntimeout.tv_usec, 
+	 	timeleft ? *timeleft : -1));
+
+	 return(result);
+}