Moved from ports with several enhancements

1 files changed, 113 insertions, 0 deletions

diff --git a/lib/libncurses/curs_kernel.3 b/lib/libncurses/curs_kernel.3
new file mode 100644
index 0000000..24084f6
--- /dev/null
+++ b/lib/libncurses/curs_kernel.3
@@ -0,0 +1,113 @@
+.TH curs_kernel 3X ""
+.SH NAME
+\fBcurs_kernel\fR: \fBdef_prog_mode\fR, \fBdef_shell_mode\fR,
+\fBreset_prog_mode\fR, \fBreset_shell_mode\fR, \fBresetty\fR,
+\fBsavetty\fR, \fBgetsyx\fR, \fBsetsyx\fR, \fBripoffline\fR,
+\fBcurs_set\fR, \fBnapms\fR - low-level \fBncurses\fR routines
+.SH SYNOPSIS
+\fB#include <ncurses.h>\fR
+
+\fBint def_prog_mode(void);\fR
+.br
+\fBint def_shell_mode(void);\fR
+.br
+\fBint reset_prog_mode(void);\fR
+.br
+\fBint reset_shell_mode(void);\fR
+.br
+\fBint resetty(void);\fR
+.br
+\fBint savetty(void);\fR
+.br
+\fBint getsyx(int y, int x);\fR
+.br
+\fBint setsyx(int y, int x);\fR
+.br
+\fBint ripoffline(int line, int (*init)(WINDOW *, int));\fR
+.br
+\fBint curs_set(int visibility);\fR
+.br
+\fBint napms(int ms);\fR
+.br
+.SH DESCRIPTION
+The following routines give low-level access to various \fBncurses\fR
+capabilities.  Theses routines typically are used inside library
+routines.
+
+The \fBdef_prog_mode\fR and \fBdef_shell_mode\fR routines save the
+current terminal modes as the "program" (in \fBncurses\fR) or "shell"
+(not in \fBncurses\fR) state for use by the \fBreset_prog_mode\fR and
+\fBreset_shell_mode\fR routines.  This is done automatically by
+\fBinitscr\fR.
+
+The \fBreset_prog_mode\fR and \fBreset_shell_mode\fR routines restore
+the terminal to "program" (in \fBncurses\fR) or "shell" (out of
+\fBncurses\fR) state.  These are done automatically by \fBendwin\fR
+and, after an \fBendwin\fR, by \fBdoupdate\fR, so they normally are
+not called.
+
+The \fBresetty\fR and \fBsavetty\fR routines save and restore the
+state of the terminal modes.  \fBsavetty\fR saves the current state in
+a buffer and \fBresetty\fR restores the state to what it was at the
+last call to \fBsavetty\fR.
+
+With the \fBgetsyx\fR routine, the current coordinates of the virtual
+screen cursor are returned in \fIy\fR and \fIx\fR.  If \fBleaveok\fR
+is currently \fBTRUE\fR, then \fB-1\fR,\fB-1\fR is returned.  If lines
+have been removed from the top of the screen, using \fBripoffline\fR,
+\fIy\fR and \fIx\fR include these lines; therefore, \fIy\fR and
+\fIx\fR should be used only as arguments for \fBsetsyx\fR.
+
+With the \fBsetsyx\fR routine, the virtual screen cursor is set to
+\fIy\fR, \fIx\fR.  If \fIy\fR and \fIx\fR are both \fB-1\fR, then
+\fBleaveok\fR is set.  The two routines \fBgetsyx\fR and \fBsetsyx\fR
+are designed to be used by a library routine, which manipulates
+\fBncurses\fR windows but does not want to change the current position
+of the program's cursor.  The library routine would call \fBgetsyx\fR
+at the beginning, do its manipulation of its own windows, do a
+\fBwnoutrefresh\fR on its windows, call \fBsetsyx\fR, and then call
+\fBdoupdate\fR.
+
+The \fBripoffline\fR routine provides access to the same facility that
+\fBslk_init\fR [see curs_slk(3X)] uses to reduce the size of the
+screen.  \fBripoffline\fR must be called before \fBinitscr\fR or
+\fBnewterm\fR is called.  If \fIline\fR is positive, a line is removed
+from the top of \fBstdscr\fR; if \fIline\fR is negative, a line is
+removed from the bottom.  When this is done inside \fBinitscr\fR, the
+routine \fBinit\fR (supplied by the user) is called with two
+arguments: a window pointer to the one-line window that has been
+allocated and an integer with the number of columns in the window.
+Inside this initialization routine, the integer variables \fBLINES\fR
+and \fBCOLS\fR (defined in \fB<ncurses.h>\fR) are not guaranteed to be
+accurate and \fBwrefresh\fR or \fBdoupdate\fR must not be called.  It
+is allowable to call \fBwnoutrefresh\fR during the initialization
+routine.
+
+\fBripoffline\fR can be called up to five times before calling \fBinitscr\fR or
+\fBnewterm\fR.
+
+The \fBcurs_set\fR routine sets the cursor state is set to invisible,
+normal, or very visible for \fBvisibility\fR equal to \fB0\fR,
+\fB1\fR, or \fB2\fR respectively.  If the terminal supports the
+\fIvisibility\fR requested, the previous \fIcursor\fR state is
+returned; otherwise, \fBERR\fR is returned.
+
+The \fBnapms\fR routine is used to sleep for \fIms\fR milliseconds.
+.SH RETURN VALUE
+Except for \fBcurs_set\fR, these routines always return \fBOK\fR.
+\fBcurs_set\fR returns the previous cursor state, or \fBERR\fR if the
+requested \fIvisibility\fR is not supported.
+.SH NOTES
+Note that \fBgetsyx\fR is a macro, so \fB&\fR is not necessary before
+the variables \fIy\fR and \fIx\fR.
+.SH BUGS
+The return value of curs_set is currently incorrect.
+.SH SEE ALSO
+\fBncurses\fR(3X), \fBcurs_initscr\fR(3X), \fBcurs_outopts\fR(3X), \fBcurs_refresh\fR(3X),
+\fBcurs_scr_dump\fR(3X), \fBcurs_slk\fR(3X)
+.\"#
+.\"# The following sets edit modes for GNU EMACS
+.\"# Local Variables:
+.\"# mode:nroff
+.\"# fill-column:79
+.\"# End: