diff options
Diffstat (limited to 'ncurses-5.9/ncurses/tinfo/lib_termcap.c')
| -rw-r--r-- | ncurses-5.9/ncurses/tinfo/lib_termcap.c | 392 |
1 files changed, 392 insertions, 0 deletions
diff --git a/ncurses-5.9/ncurses/tinfo/lib_termcap.c b/ncurses-5.9/ncurses/tinfo/lib_termcap.c new file mode 100644 index 0000000..21df711 --- /dev/null +++ b/ncurses-5.9/ncurses/tinfo/lib_termcap.c @@ -0,0 +1,392 @@ +/**************************************************************************** + * Copyright (c) 1998-2009,2010 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 * + * and: Juergen Pfeifer * + * * + * 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> + +#ifndef CUR +#define CUR SP_TERMTYPE +#endif + +MODULE_ID("$Id$") + +NCURSES_EXPORT_VAR(char *) UP = 0; +NCURSES_EXPORT_VAR(char *) BC = 0; + +#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) +NCURSES_SP_NAME(tgetent) (NCURSES_SP_DCLx char *bufp, const char *name) +{ + int rc = ERR; + int n; + bool found_cache = FALSE; +#ifdef USE_TERM_DRIVER + TERMINAL *termp = 0; +#endif + + START_TRACE(); + T((T_CALLED("tgetent()"))); + + TINFO_SETUP_TERM(&termp, (NCURSES_CONST char *) name, + STDOUT_FILENO, &rc, TRUE); + +#ifdef USE_TERM_DRIVER + if (termp == 0 || + !((TERMINAL_CONTROL_BLOCK *) termp)->drv->isTerminfo) + return (rc); +#endif + + /* + * 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 != TerminalOf(SP_PARM)) { + TERMINAL *trm = LAST_TRM; + NCURSES_SP_NAME(del_curterm) (NCURSES_SP_ARGx 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 = TerminalOf(SP_PARM); + LAST_SEQ = ++CacheSeq; + + PC = 0; + UP = 0; + BC = 0; + FIX_SGR0 = 0; /* don't free it - application may still use */ + + if (rc == 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(&(TerminalOf(SP_PARM)->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_PARM); + (void) NCURSES_SP_NAME(baudrate) (NCURSES_SP_ARG); /* sets ospeed as a side-effect */ + +/* LINT_PREPRO +#if 0*/ +#include <capdefaults.c> +/* LINT_PREPRO +#endif*/ + + } + returnCode(rc); +} + +#if NCURSES_SP_FUNCS +NCURSES_EXPORT(int) +tgetent(char *bufp, const char *name) +{ + return NCURSES_SP_NAME(tgetent) (CURRENT_SCREEN, bufp, name); +} +#endif + +#if 0 +static bool +same_tcname(const char *a, const char *b) +{ + fprintf(stderr, "compare(%s,%s)\n", a, b); + return !strncmp(a, b, 2); +} +#else +#define same_tcname(a,b) !strncmp(a,b,2) +#endif + +/*************************************************************************** + * + * tgetflag(str) + * + * Look up boolean termcap capability str and return its value (TRUE=1 if + * present, FALSE=0 if not). + * + ***************************************************************************/ + +NCURSES_EXPORT(int) +NCURSES_SP_NAME(tgetflag) (NCURSES_SP_DCLx NCURSES_CONST char *id) +{ + int result = 0; /* Solaris returns zero for missing flag */ + int i, j; + + T((T_CALLED("tgetflag(%p, %s)"), (void *) SP_PARM, id)); + if (HasTInfoTerminal(SP_PARM)) { + TERMTYPE *tp = &(TerminalOf(SP_PARM)->type); + struct name_table_entry const *entry_ptr; + + entry_ptr = _nc_find_type_entry(id, BOOLEAN, TRUE); + if (entry_ptr != 0) { + j = entry_ptr->nte_index; + } +#if NCURSES_XNAMES + else { + j = -1; + for_each_ext_boolean(i, tp) { + const char *capname = ExtBoolname(tp, i, boolcodes); + if (same_tcname(id, capname)) { + j = i; + break; + } + } + } +#endif + if (j >= 0) { + /* note: setupterm forces invalid booleans to false */ + result = tp->Booleans[j]; + } + } + returnCode(result); +} + +#if NCURSES_SP_FUNCS +NCURSES_EXPORT(int) +tgetflag(NCURSES_CONST char *id) +{ + return NCURSES_SP_NAME(tgetflag) (CURRENT_SCREEN, id); +} +#endif + +/*************************************************************************** + * + * tgetnum(str) + * + * Look up numeric termcap capability str and return its value, or -1 if + * not given. + * + ***************************************************************************/ + +NCURSES_EXPORT(int) +NCURSES_SP_NAME(tgetnum) (NCURSES_SP_DCLx NCURSES_CONST char *id) +{ + int result = ABSENT_NUMERIC; + int i, j; + + T((T_CALLED("tgetnum(%p, %s)"), (void *) SP_PARM, id)); + if (HasTInfoTerminal(SP_PARM)) { + TERMTYPE *tp = &(TerminalOf(SP_PARM)->type); + struct name_table_entry const *entry_ptr; + + entry_ptr = _nc_find_type_entry(id, NUMBER, TRUE); + if (entry_ptr != 0) { + j = entry_ptr->nte_index; + } +#if NCURSES_XNAMES + else { + j = -1; + for_each_ext_number(i, tp) { + const char *capname = ExtNumname(tp, i, numcodes); + if (same_tcname(id, capname)) { + j = i; + break; + } + } + } +#endif + if (j >= 0) { + if (VALID_NUMERIC(tp->Numbers[j])) + result = tp->Numbers[j]; + } + } + returnCode(result); +} + +#if NCURSES_SP_FUNCS +NCURSES_EXPORT(int) +tgetnum(NCURSES_CONST char *id) +{ + return NCURSES_SP_NAME(tgetnum) (CURRENT_SCREEN, id); +} +#endif + +/*************************************************************************** + * + * tgetstr(str, area) + * + * Look up string termcap capability str and return a pointer to its value, + * or NULL if not given. + * + ***************************************************************************/ + +NCURSES_EXPORT(char *) +NCURSES_SP_NAME(tgetstr) (NCURSES_SP_DCLx NCURSES_CONST char *id, char **area) +{ + char *result = NULL; + int i, j; + + T((T_CALLED("tgetstr(%s,%p)"), id, (void *) area)); + if (HasTInfoTerminal(SP_PARM)) { + TERMTYPE *tp = &(TerminalOf(SP_PARM)->type); + struct name_table_entry const *entry_ptr; + + entry_ptr = _nc_find_type_entry(id, STRING, TRUE); + if (entry_ptr != 0) { + j = entry_ptr->nte_index; + } +#if NCURSES_XNAMES + else { + j = -1; + for_each_ext_string(i, tp) { + const char *capname = ExtStrname(tp, i, strcodes); + if (same_tcname(id, capname)) { + j = i; + break; + } + } + } +#endif + if (j >= 0) { + result = tp->Strings[j]; + 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; + } + } + } + } + returnPtr(result); +} + +#if NCURSES_SP_FUNCS +NCURSES_EXPORT(char *) +tgetstr(NCURSES_CONST char *id, char **area) +{ + return NCURSES_SP_NAME(tgetstr) (CURRENT_SCREEN, id, area); +} +#endif + +#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 |