/****************************************************************************
- * Copyright (c) 1998 Free Software Foundation, Inc. *
+ * Copyright (c) 1998-2006,2007 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 *
/****************************************************************************
* 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) *
****************************************************************************/
+#define __INTERNAL_CAPS_VISIBLE
#include <curses.priv.h>
#include <termcap.h>
#include <tic.h>
+#include <ctype.h>
-#define __INTERNAL_CAPS_VISIBLE
#include <term_entry.h>
-MODULE_ID("$Id: lib_termcap.c,v 1.29 1999/09/05 01:06:43 tom Exp $")
+MODULE_ID("$Id: lib_termcap.c,v 1.61 2007/06/02 19:36:03 tom Exp $")
+
+NCURSES_EXPORT_VAR(char *) UP = 0;
+NCURSES_EXPORT_VAR(char *) BC = 0;
-/*
- some of the code in here was contributed by:
- Magnus Bengtsson, d6mbeng@dtek.chalmers.se
-*/
+#define MyCache _nc_globals.tgetent_cache
+#define CacheInx _nc_globals.tgetent_index
+#define CacheSeq _nc_globals.tgetent_sequence
-char *UP;
-char *BC;
+#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
/***************************************************************************
*
*
***************************************************************************/
-int tgetent(char *bufp GCC_UNUSED, const char *name)
+NCURSES_EXPORT(int)
+tgetent(char *bufp, const char *name)
{
-int errcode;
+ 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;
- T((T_CALLED("tgetent()")));
+ PC = 0;
+ UP = 0;
+ BC = 0;
+ FIX_SGR0 = 0; /* don't free it - application may still use */
- setupterm((NCURSES_CONST char *)name, STDOUT_FILENO, &errcode);
+ if (errcode == 1) {
- if (errcode == 1) {
+ if (cursor_left)
+ if ((backspaces_with_bs = !strcmp(cursor_left, "\b")) == 0)
+ backspace_if_not_bs = cursor_left;
- if (cursor_left)
- if ((backspaces_with_bs = !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;
- /* 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;
- (void) baudrate(); /* sets ospeed as a side-effect */
+ (void) baudrate(); /* sets ospeed as a side-effect */
/* LINT_PREPRO
#if 0*/
/* LINT_PREPRO
#endif*/
- }
- returnCode(errcode);
+ }
+ returnCode(errcode);
}
/***************************************************************************
*
***************************************************************************/
-int tgetflag(NCURSES_CONST char *id)
+NCURSES_EXPORT(int)
+tgetflag(NCURSES_CONST char *id)
{
-int 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]);
- }
+ 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 */
+ }
+ returnCode(0); /* Solaris does this */
}
/***************************************************************************
*
***************************************************************************/
-int tgetnum(NCURSES_CONST char *id)
+NCURSES_EXPORT(int)
+tgetnum(NCURSES_CONST char *id)
{
-int 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]))
- return -1;
- returnCode(tp->Numbers[i]);
- }
+ 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(ERR);
+ }
+ returnCode(ABSENT_NUMERIC);
}
/***************************************************************************
*
***************************************************************************/
-char *tgetstr(NCURSES_CONST char *id, char **area)
+NCURSES_EXPORT(char *)
+tgetstr(NCURSES_CONST char *id, char **area)
{
-int i;
-
- 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);
- T(("trying %s", capname));
- if (!strncmp(id, capname, 2)) {
- T(("found match : %s", _nc_visbuf(tp->Strings[i])));
- /* setupterm forces cancelled strings to null */
+ 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
- && VALID_STRING(tp->Strings[i])) {
- (void) strcpy(*area, tp->Strings[i]);
+ && *area != 0) {
+ (void) strcpy(*area, result);
+ result = *area;
*area += strlen(*area) + 1;
}
- returnPtr(tp->Strings[i]);
}
+ break;
}
}
- returnPtr(NULL);
+ }
+ returnPtr(result);
}
-/*
- * char *
- * tgoto(string, x, y)
- *
- * Retained solely for upward compatibility. Note the intentional
- * reversing of the last two arguments.
- *
- */
-
-char *tgoto(const char *string, int x, int y)
+#if NO_LEAKS
+NCURSES_EXPORT(void)
+_nc_tgetent_leaks(void)
{
- T((T_CALLED("tgoto(%s,%d,%d)"), string, x, y));
- returnPtr(tparm((NCURSES_CONST char *)string, y, x));
+ for (CacheInx = 0; CacheInx < TGETENT_MAX; ++CacheInx) {
+ FreeIfNeeded(FIX_SGR0);
+ if (LAST_TRM != 0)
+ del_curterm(LAST_TRM);
+ }
}
+#endif
projects / ncurses.git / blobdiff