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FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //usr/src/contrib/ncurses/ncurses/tinfo/lib_termcap.c |
/****************************************************************************
* Copyright (c) 1998-2007,2008 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> *
* and: Thomas E. Dickey 1996-on *
* *
* some of the code in here was contributed by: *
* Magnus Bengtsson, d6mbeng@dtek.chalmers.se (Nov'93) *
* (but it has changed a lot) *
****************************************************************************/
/* $FreeBSD: release/9.1.0/contrib/ncurses/ncurses/tinfo/lib_termcap.c 184989 2008-11-15 09:23:48Z rafan $ */
#define __INTERNAL_CAPS_VISIBLE
#include <curses.priv.h>
#include <termcap.h>
#include <tic.h>
#include <ctype.h>
#include <term_entry.h>
MODULE_ID("$Id: lib_termcap.c,v 1.63 2008/08/16 19:22:55 tom Exp $")
NCURSES_EXPORT_VAR(char *) UP = 0;
NCURSES_EXPORT_VAR(char *) BC = 0;
#ifdef FREEBSD_NATIVE
extern char _nc_termcap[]; /* buffer to copy out */
#endif
#define MyCache _nc_globals.tgetent_cache
#define CacheInx _nc_globals.tgetent_index
#define CacheSeq _nc_globals.tgetent_sequence
#define FIX_SGR0 MyCache[CacheInx].fix_sgr0
#define LAST_TRM MyCache[CacheInx].last_term
#define LAST_BUF MyCache[CacheInx].last_bufp
#define LAST_USE MyCache[CacheInx].last_used
#define LAST_SEQ MyCache[CacheInx].sequence
/***************************************************************************
*
* tgetent(bufp, term)
*
* In termcap, this function reads in the entry for terminal `term' into the
* buffer pointed to by bufp. It must be called before any of the functions
* below are called.
* In this terminfo emulation, tgetent() simply calls setupterm() (which
* does a bit more than tgetent() in termcap does), and returns its return
* value (1 if successful, 0 if no terminal with the given name could be
* found, or -1 if no terminal descriptions have been installed on the
* system). The bufp argument is ignored.
*
***************************************************************************/
NCURSES_EXPORT(int)
tgetent(char *bufp, const char *name)
{
int errcode;
int n;
bool found_cache = FALSE;
START_TRACE();
T((T_CALLED("tgetent()")));
_nc_setupterm((NCURSES_CONST char *) name, STDOUT_FILENO, &errcode, TRUE);
/*
* In general we cannot tell if the fixed sgr0 is still used by the
* caller, but if tgetent() is called with the same buffer, that is
* good enough, since the previous data would be invalidated by the
* current call.
*
* bufp may be a null pointer, e.g., GNU termcap. That allocates data,
* which is good until the next tgetent() call. The conventional termcap
* is inconvenient because of the fixed buffer size, but because it uses
* caller-supplied buffers, can have multiple terminal descriptions in
* use at a given time.
*/
for (n = 0; n < TGETENT_MAX; ++n) {
bool same_result = (MyCache[n].last_used && MyCache[n].last_bufp == bufp);
if (same_result) {
CacheInx = n;
if (FIX_SGR0 != 0) {
FreeAndNull(FIX_SGR0);
}
/*
* Also free the terminfo data that we loaded (much bigger leak).
*/
if (LAST_TRM != 0 && LAST_TRM != cur_term) {
TERMINAL *trm = LAST_TRM;
del_curterm(LAST_TRM);
for (CacheInx = 0; CacheInx < TGETENT_MAX; ++CacheInx)
if (LAST_TRM == trm)
LAST_TRM = 0;
CacheInx = n;
}
found_cache = TRUE;
break;
}
}
if (!found_cache) {
int best = 0;
for (CacheInx = 0; CacheInx < TGETENT_MAX; ++CacheInx) {
if (LAST_SEQ < MyCache[best].sequence) {
best = CacheInx;
}
}
CacheInx = best;
}
LAST_TRM = cur_term;
LAST_SEQ = ++CacheSeq;
PC = 0;
UP = 0;
BC = 0;
FIX_SGR0 = 0; /* don't free it - application may still use */
if (errcode == 1) {
if (cursor_left)
if ((backspaces_with_bs = (char) !strcmp(cursor_left, "\b")) == 0)
backspace_if_not_bs = cursor_left;
/* we're required to export these */
if (pad_char != NULL)
PC = pad_char[0];
if (cursor_up != NULL)
UP = cursor_up;
if (backspace_if_not_bs != NULL)
BC = backspace_if_not_bs;
if ((FIX_SGR0 = _nc_trim_sgr0(&(cur_term->type))) != 0) {
if (!strcmp(FIX_SGR0, exit_attribute_mode)) {
if (FIX_SGR0 != exit_attribute_mode) {
free(FIX_SGR0);
}
FIX_SGR0 = 0;
}
}
LAST_BUF = bufp;
LAST_USE = TRUE;
SetNoPadding(SP);
(void) baudrate(); /* sets ospeed as a side-effect */
/* LINT_PREPRO
#if 0*/
#include <capdefaults.c>
/* LINT_PREPRO
#endif*/
}
#ifdef FREEBSD_NATIVE
/*
* This is a REALLY UGLY hack. Basically, if we originate with
* a termcap source, try and copy it out.
*/
if (bufp && _nc_termcap[0])
strncpy(bufp, _nc_termcap, 1024);
#endif
returnCode(errcode);
}
/***************************************************************************
*
* tgetflag(str)
*
* Look up boolean termcap capability str and return its value (TRUE=1 if
* present, FALSE=0 if not).
*
***************************************************************************/
NCURSES_EXPORT(int)
tgetflag(NCURSES_CONST char *id)
{
unsigned i;
T((T_CALLED("tgetflag(%s)"), id));
if (cur_term != 0) {
TERMTYPE *tp = &(cur_term->type);
for_each_boolean(i, tp) {
const char *capname = ExtBoolname(tp, i, boolcodes);
if (!strncmp(id, capname, 2)) {
/* setupterm forces invalid booleans to false */
returnCode(tp->Booleans[i]);
}
}
}
returnCode(0); /* Solaris does this */
}
/***************************************************************************
*
* tgetnum(str)
*
* Look up numeric termcap capability str and return its value, or -1 if
* not given.
*
***************************************************************************/
NCURSES_EXPORT(int)
tgetnum(NCURSES_CONST char *id)
{
unsigned i;
T((T_CALLED("tgetnum(%s)"), id));
if (cur_term != 0) {
TERMTYPE *tp = &(cur_term->type);
for_each_number(i, tp) {
const char *capname = ExtNumname(tp, i, numcodes);
if (!strncmp(id, capname, 2)) {
if (!VALID_NUMERIC(tp->Numbers[i]))
returnCode(ABSENT_NUMERIC);
returnCode(tp->Numbers[i]);
}
}
}
returnCode(ABSENT_NUMERIC);
}
/***************************************************************************
*
* tgetstr(str, area)
*
* Look up string termcap capability str and return a pointer to its value,
* or NULL if not given.
*
***************************************************************************/
NCURSES_EXPORT(char *)
tgetstr(NCURSES_CONST char *id, char **area)
{
unsigned i;
char *result = NULL;
T((T_CALLED("tgetstr(%s,%p)"), id, area));
if (cur_term != 0) {
TERMTYPE *tp = &(cur_term->type);
for_each_string(i, tp) {
const char *capname = ExtStrname(tp, i, strcodes);
if (!strncmp(id, capname, 2)) {
result = tp->Strings[i];
TR(TRACE_DATABASE, ("found match : %s", _nc_visbuf(result)));
/* setupterm forces canceled strings to null */
if (VALID_STRING(result)) {
if (result == exit_attribute_mode
&& FIX_SGR0 != 0) {
result = FIX_SGR0;
TR(TRACE_DATABASE, ("altered to : %s", _nc_visbuf(result)));
}
if (area != 0
&& *area != 0) {
(void) strcpy(*area, result);
result = *area;
*area += strlen(*area) + 1;
}
}
break;
}
}
}
returnPtr(result);
}
#if NO_LEAKS
NCURSES_EXPORT(void)
_nc_tgetent_leaks(void)
{
for (CacheInx = 0; CacheInx < TGETENT_MAX; ++CacheInx) {
FreeIfNeeded(FIX_SGR0);
if (LAST_TRM != 0)
del_curterm(LAST_TRM);
}
}
#endif