.\"***************************************************************************
-.\" Copyright (c) 1998,2000 Free Software Foundation, Inc. *
+.\" Copyright 2018-2023,2024 Thomas E. Dickey *
+.\" Copyright 1998-2010,2017 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 *
.\" authorization. *
.\"***************************************************************************
.\"
-.\" $Id: curs_inchstr.3x,v 1.8 2000/07/01 20:16:18 tom Exp $
-.TH curs_inchstr 3X ""
+.\" $Id: curs_inchstr.3x,v 1.42 2024/03/16 15:35:01 tom Exp $
+.TH curs_inchstr 3X 2024-03-16 "ncurses @NCURSES_MAJOR@.@NCURSES_MINOR@" "Library calls"
+.ie \n(.g \{\
+.ds `` \(lq
+.ds '' \(rq
+.\}
+.el \{\
+.ie t .ds `` ``
+.el .ds `` ""
+.ie t .ds '' ''
+.el .ds '' ""
+.\}
+.
+.de bP
+.ie n .IP \(bu 4
+.el .IP \(bu 2
+..
.SH NAME
-\fBinchstr\fR,
-\fBinchnstr\fR,
-\fBwinchstr\fR,
-\fBwinchnstr\fR,
-\fBmvinchstr\fR,
-\fBmvinchnstr\fR,
-\fBmvwinchstr\fR,
-\fBmvwinchnstr\fR - get a string of characters (and attributes) from a \fBcurses\fR window
+\fB\%inchstr\fP,
+\fB\%inchnstr\fP,
+\fB\%winchstr\fP,
+\fB\%winchnstr\fP,
+\fB\%mvinchstr\fP,
+\fB\%mvinchnstr\fP,
+\fB\%mvwinchstr\fP,
+\fB\%mvwinchnstr\fP \-
+get a \fIcurses\fR character string from a window
.SH SYNOPSIS
-\fB#include <curses.h>\fR
-
-\fBint inchstr(chtype *chstr);\fR
-.br
-\fBint inchnstr(chtype *chstr, int n);\fR
-.br
-\fBint winchstr(WINDOW *win, chtype *chstr);\fR
-.br
-\fBint winchnstr(WINDOW *win, chtype *chstr, int n);\fR
-.br
-\fBint mvinchstr(int y, int x, chtype *chstr);\fR
-.br
-\fBint mvinchnstr(int y, int x, chtype *chstr, int n);\fR
-.br
-\fBint mvwinchstr(WINDOW *win, int y, int x, chtype *chstr);\fR
-.br
-\fBint mvwinchnstr(WINDOW *win, int y, int x, chtype *chstr, int n);\fR
-.br
+.nf
+\fB#include <curses.h>
+.PP
+\fBint inchstr(chtype *\fIchstr\fP);
+\fBint inchnstr(chtype *\fIchstr\fP, int \fIn\fP);
+\fBint winchstr(WINDOW *\fIwin\fP, chtype *\fIchstr\fP);
+\fBint winchnstr(WINDOW *\fIwin\fP, chtype *\fIchstr\fP, int \fIn\fP);
+.PP
+\fBint mvinchstr(int \fIy\fP, int \fIx\fP, chtype *\fIchstr\fP);
+\fBint mvinchnstr(int \fIy\fP, int \fIx\fP, chtype *\fIchstr\fP, int \fIn\fP);
+\fBint mvwinchstr(WINDOW *\fIwin\fP, int \fIy\fP, int \fIx\fP, chtype *\fIchstr\fP);
+\fBint mvwinchnstr(WINDOW *\fIwin\fP, int \fIy\fP, int \fIx\fP, chtype *\fIchstr\fP, int \fIn\fP);
+.fi
.SH DESCRIPTION
-These routines return a NULL-terminated array of \fBchtype\fR quantities,
+These routines return a NULL-terminated array of \fBchtype\fP quantities,
starting at the current cursor position in the named window and ending at the
-right margin of the window. The four functions with \fIn\fR as
-the last argument, return a leading substring at most \fIn\fR characters long
+right margin of the window.
+.PP
+The four functions with \fIn\fP as the last argument, return
+a leading substring at most \fIn\fP characters long
(exclusive of the trailing (chtype)0).
-Constants defined in \fB<curses.h>\fR can be used with the \fB&\fR (logical
+Transfer stops at the end of the current line, or when \fIn\fP characters have
+been stored at the location referenced by \fIchstr\fP.
+.PP
+Constants defined in \fB<curses.h>\fP can be used with the \fB&\fP (logical
AND) operator to extract the character or the attribute alone from any position
-in the \fIchstr\fR [see \fBcurs_inch\fR(3X)].
+in the \fIchstr\fP [see \fBcurs_inch\fP(3X)].
.SH RETURN VALUE
-All routines return the integer \fBERR\fR upon failure and an integer value
-other than \fBERR\fR upon successful completion (the number of characters
+All routines return the integer \fBERR\fP upon failure and an integer value
+other than \fBERR\fP upon successful completion (the number of characters
retrieved, exclusive of the trailing 0).
+.PP
+X/Open Curses defines no error conditions.
+This implementation returns an error
+.bP
+if the \fIwin\fP parameter is null or
+.bP
+if the \fIchstr\fP parameter is null.
+.PP
+Functions with a \*(``mv\*('' prefix first perform a cursor movement using
+\fBwmove\fP, and return an error if the position is outside the window,
+or if the window pointer is null.
.SH NOTES
-Note that all routines except \fBwinchnstr\fR may be macros. SVr4 does not
-document whether the result string is 0-terminated; it does not document
+All routines except \fBwinchnstr\fP may be macros.
+.PP
+SVr4 does not
+document whether the result string is zero-terminated; it does not document
whether a length limit argument includes any trailing 0; and it does not
document the meaning of the return value.
+.PP
+Reading a line that overflows the array pointed to by
+\fIchstr\fP
+with
+\fBinchstr\fP,
+\fBmvinchstr\fP,
+\fBmvwinchstr\fP
+or
+\fBwinchstr\fP
+causes undefined results.
+Therefore, the use of
+\fBinchnstr\fP,
+\fBmvinchnstr\fP,
+\fBmvwinchnstr\fP, or
+\fBwinchnstr\fP
+is recommended.
.SH PORTABILITY
-These functions are described in the XSI Curses standard, Issue 4. It is no
-more specific than the SVr4 documentation on the trailing 0. It does specify
-that the successful return of the functions is \fBOK\fR.
+These functions are described in the XSI Curses standard, Issue 4.
+It is no
+more specific than the SVr4 documentation on the trailing 0.
+It does specify
+that the successful return of the functions is \fBOK\fP.
.SH SEE ALSO
-\fBcurses\fR(3X), \fBcurs_inch\fR(3X).
-.\"#
-.\"# The following sets edit modes for GNU EMACS
-.\"# Local Variables:
-.\"# mode:nroff
-.\"# fill-column:79
-.\"# End:
+\fB\%curses\fP(3X),
+\fB\%curs_inch\fP(3X),
+\fB\%curs_inwstr\fP(3X),
+\fB\%curs_in_wchstr\fP(3X)
projects / ncurses.git / blobdiff