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Diffstat (limited to 'ncurses-5.3/man/curs_termcap.3x')
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1 files changed, 158 insertions, 0 deletions
diff --git a/ncurses-5.3/man/curs_termcap.3x b/ncurses-5.3/man/curs_termcap.3x new file mode 100644 index 0000000..0f3b13b --- /dev/null +++ b/ncurses-5.3/man/curs_termcap.3x @@ -0,0 +1,158 @@ +.\"*************************************************************************** +.\" Copyright (c) 1998-2001,2002 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. * +.\"*************************************************************************** +.\" +.\" $Id$ +.TH curs_termcap 3X "" +.ds n 5 +.SH NAME +\fBtgetent\fR, +\fBtgetflag\fR, +\fBtgetnum\fR, +\fBtgetstr\fR, +\fBtgoto\fR, +\fBtputs\fR - direct \fBcurses\fR interface to the terminfo capability database +.SH SYNOPSIS +\fB#include <curses.h>\fR +.br +\fB#include <term.h>\fR +.br +\fBextern char PC;\fR +\fBextern char * UP;\fR +\fBextern char * BC;\fR +\fBextern @NCURSES_OSPEED@ ospeed;\fR +.br +\fBint tgetent(char *bp, const char *name);\fR +.br +\fBint tgetflag(char *id);\fR +.br +\fBint tgetnum(char *id);\fR +.br +\fBchar *tgetstr(char *id, char **area);\fR +.br +\fBchar *tgoto(const char *cap, int col, int row);\fR +.br +\fBint tputs(const char *str, int affcnt, int (*putc)(int));\fR +.br +.SH DESCRIPTION +These routines are included as a conversion aid for programs that use +the \fItermcap\fR library. Their parameters are the same and the +routines are emulated using the \fIterminfo\fR database. Thus, they +can only be used to query the capabilities of entries for which a +terminfo entry has been compiled. + +The \fBtgetent\fR routine loads the entry for \fIname\fR. +It returns 1 on success, 0 if there is no such entry, and -1 if the +terminfo database could not be found. +The emulation ignores the buffer pointer \fIbp\fR. + +The \fBtgetflag\fR routine gets the boolean entry for \fIid\fR, +or zero if it is not available. + +The \fBtgetnum\fR routine gets the numeric entry for \fIid\fR, +or -1 if it is not available. + +The \fBtgetstr\fR routine returns the string entry for \fIid\fR, +or zero if it is not available. +Use \fBtputs\fR to output the returned string. +The return value will also be copied to the buffer pointed to by \fIarea\fR, +and the \fIarea\fR value will be updated to point past the null ending +this value. + +Only the first two characters of the \fBid\fR parameter of +\fBtgetflag\fR, +\fBtgetnum\fR and +\fBtgetstr\fR are compared in lookups. + +The \fBtgoto\fR routine instantiates the parameters into the given capability. +The output from this routine is to be passed to \fBtputs\fR. + +The \fBtputs\fR routine is described on the \fBcurs_terminfo\fR(3X) manual +page. It can retrieve capabilities by either termcap or terminfo name. + +The variables +\fBPC\fR, +\fBUP\fR and +\fBBC\fR +are set by \fBtgetent\fR to the terminfo entry's data for +\fBpad_char\fR, +\fBcursor_up\fR and +\fBbackspace_if_not_bs\fR, +respectively. +\fBUP\fR is not used by ncurses. +\fBPC\fR is used in the \fBtdelay_output\fR function. +\fBBC\fR is used in the \fBtgoto\fR emulation. +The variable \fBospeed\fR is set by ncurses in a system-specific coding +to reflect the terminal speed. + +.SH RETURN VALUE +Except where explicitly noted, +routines that return an integer return \fBERR\fR upon failure and \fBOK\fR +(SVr4 only specifies "an integer value other than \fBERR\fR") upon successful +completion. + +Routines that return pointers return \fBNULL\fR on error. +.SH BUGS +If you call \fBtgetstr\fR to fetch \fBca\fR or any other parameterized string, +be aware that it will be returned in terminfo notation, not the older and +not-quite-compatible termcap notation. This won't cause problems if all +you do with it is call \fBtgoto\fR or \fBtparm\fR, which both expand +terminfo-style strings as terminfo. +(The \fBtgoto\fR function, if configured to support termcap, will check +if the string is indeed terminfo-style by looking for "%p" parameters or +"$<..>" delays, and invoke a termcap-style parser if the string does not +appear to be terminfo). + +Because terminfo conventions for representing padding in string capabilities +differ from termcap's, \fBtputs("50");\fR will put out a literal "50" rather +than busy-waiting for 50 milliseconds. Cope with it. +.SH PORTABILITY +The XSI Curses standard, Issue 4 describes these functions. However, they +are marked TO BE WITHDRAWN and may be removed in future versions. + +Neither the XSI Curses standard nor the SVr4 man pages documented the return +values of \fBtgetent\fR correctly, though all three were in fact returned ever +since SVr1. +In particular, an omission in the XSI Curses documentation has been +misinterpreted to mean that \fBtgetent\fR returns \fBOK\fR or \fBERR\fR. +Because the purpose of these functions is to provide compatibility with +the \fItermcap\fR library, that is a defect in XCurses, Issue 4, Version 2 +rather than in ncurses. + +External variables are provided for support of certain termcap applications. +However, termcap applications' use of those variables is poorly documented, +e.g., not distinguishing between input and output. +In particular, some applications are reported to declare and/or +modify \fBospeed\fR. +.SH SEE ALSO +\fBcurses\fR(3X), \fBterminfo\fR(\*n), \fBputc\fR(3S). +.\"# +.\"# The following sets edit modes for GNU EMACS +.\"# Local Variables: +.\"# mode:nroff +.\"# fill-column:79 +.\"# End: |