mirrors/cosmopolitan
1
0
Fork 0
mirror of https://github.com/jart/cosmopolitan.git synced 2025-01-31 11:37:35 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions
cosmopolitan/third_party/ncurses/lib_set_term.c
Justine Tunney 0ed7309fdb
Add ncurses 6.4
2023-12-10 07:33:37 -08:00

872 lines
22 KiB
C
Raw Blame History

/****************************************************************************
* Copyright 2018-2021,2022 Thomas E. Dickey *
* Copyright 1998-2016,2017 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 *
* "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 2009 *
****************************************************************************/
/*
** lib_set_term.c
**
** The routine set_term().
**
*/
#define NEW_PAIR_INTERNAL 1
#include "curses.priv.h"
#include "tic.h"
#include "new_pair.h"
#if USE_GPM_SUPPORT
#ifdef HAVE_LIBDL
/* use dynamic loader to avoid linkage dependency */
#include <dlfcn.h>
#endif
#endif
#undef CUR
#define CUR SP_TERMTYPE
MODULE_ID("$Id: lib_set_term.c,v 1.184 2022/12/10 21:34:12 tom Exp $")
#ifdef USE_TERM_DRIVER
#define MaxColors InfoOf(sp).maxcolors
#define NumLabels InfoOf(sp).numlabels
#else
#define MaxColors max_colors
#define NumLabels num_labels
#endif
NCURSES_EXPORT(SCREEN *)
set_term(SCREEN *screenp)
{
SCREEN *oldSP;
SCREEN *newSP;
T((T_CALLED("set_term(%p)"), (void *) screenp));
_nc_lock_global(curses);
oldSP = CURRENT_SCREEN;
_nc_set_screen(screenp);
newSP = screenp;
if (newSP != 0) {
TINFO_SET_CURTERM(newSP, newSP->_term);
#if !USE_REENTRANT
curscr = CurScreen(newSP);
newscr = NewScreen(newSP);
stdscr = StdScreen(newSP);
COLORS = newSP->_color_count;
COLOR_PAIRS = newSP->_pair_count;
#endif
} else {
TINFO_SET_CURTERM(oldSP, 0);
#if !USE_REENTRANT
curscr = 0;
newscr = 0;
stdscr = 0;
COLORS = 0;
COLOR_PAIRS = 0;
#endif
}
_nc_unlock_global(curses);
T((T_RETURN("%p"), (void *) oldSP));
return (oldSP);
}
static void
_nc_free_keytry(TRIES * kt)
{
if (kt != 0) {
_nc_free_keytry(kt->child);
_nc_free_keytry(kt->sibling);
free(kt);
}
}
static bool
delink_screen(SCREEN *sp)
{
SCREEN *last = 0;
SCREEN *temp;
bool result = FALSE;
for (each_screen(temp)) {
if (temp == sp) {
if (last)
last->_next_screen = sp->_next_screen;
else
_nc_screen_chain = sp->_next_screen;
result = TRUE;
break;
}
last = temp;
}
return result;
}
/*
* Free the storage associated with the given SCREEN sp.
*/
NCURSES_EXPORT(void)
delscreen(SCREEN *sp)
{
T((T_CALLED("delscreen(%p)"), (void *) sp));
_nc_lock_global(curses);
if (delink_screen(sp)) {
WINDOWLIST *wl;
bool is_current = (sp == CURRENT_SCREEN);
#ifdef USE_SP_RIPOFF
if (safe_ripoff_sp && safe_ripoff_sp != safe_ripoff_stack) {
ripoff_t *rop;
for (rop = safe_ripoff_stack;
rop != safe_ripoff_sp && (rop - safe_ripoff_stack) < N_RIPS;
rop++) {
if (rop->win) {
(void) delwin(rop->win);
rop->win = 0;
}
}
}
#endif
/* delete all of the windows in this screen */
rescan:
for (each_window(sp, wl)) {
if (_nc_freewin(&(wl->win)) == OK) {
goto rescan;
}
}
if (sp->_slk != 0) {
if (sp->_slk->ent != 0) {
int i;
for (i = 0; i < sp->_slk->labcnt; ++i) {
FreeIfNeeded(sp->_slk->ent[i].ent_text);
FreeIfNeeded(sp->_slk->ent[i].form_text);
}
free(sp->_slk->ent);
}
free(sp->_slk);
sp->_slk = 0;
}
_nc_free_keytry(sp->_keytry);
sp->_keytry = 0;
_nc_free_keytry(sp->_key_ok);
sp->_key_ok = 0;
FreeIfNeeded(sp->_current_attr);
_nc_free_ordered_pairs(sp);
FreeIfNeeded(sp->_color_table);
FreeIfNeeded(sp->_color_pairs);
FreeIfNeeded(sp->_oldnum_list);
FreeIfNeeded(sp->oldhash);
FreeIfNeeded(sp->newhash);
FreeIfNeeded(sp->hashtab);
FreeIfNeeded(sp->_acs_map);
FreeIfNeeded(sp->_screen_acs_map);
NCURSES_SP_NAME(_nc_flush) (NCURSES_SP_ARG);
NCURSES_SP_NAME(del_curterm) (NCURSES_SP_ARGx sp->_term);
FreeIfNeeded(sp->out_buffer);
if (_nc_find_prescr() == sp) {
_nc_forget_prescr();
}
#if USE_GPM_SUPPORT
#ifdef HAVE_LIBDL
if (sp->_dlopen_gpm != 0) {
dlclose(sp->_dlopen_gpm);
sp->_dlopen_gpm = 0;
}
#endif
#endif /* USE_GPM_SUPPORT */
free(sp);
/*
* If this was the current screen, reset everything that the
* application might try to use (except cur_term, which may have
* multiple references in different screens).
*/
if (is_current) {
#if !USE_REENTRANT
curscr = 0;
newscr = 0;
stdscr = 0;
COLORS = 0;
COLOR_PAIRS = 0;
#endif
_nc_set_screen(0);
#if USE_WIDEC_SUPPORT
if (SP == 0) {
FreeIfNeeded(_nc_wacs);
_nc_wacs = 0;
}
#endif
} else {
set_term(CURRENT_SCREEN);
}
}
_nc_unlock_global(curses);
returnVoid;
}
static bool
no_mouse_event(SCREEN *sp GCC_UNUSED)
{
return FALSE;
}
static bool
no_mouse_inline(SCREEN *sp GCC_UNUSED)
{
return FALSE;
}
static bool
no_mouse_parse(SCREEN *sp GCC_UNUSED, int code GCC_UNUSED)
{
return TRUE;
}
static void
no_mouse_resume(SCREEN *sp GCC_UNUSED)
{
}
static void
no_mouse_wrap(SCREEN *sp GCC_UNUSED)
{
}
#if NCURSES_EXT_FUNCS && USE_COLORFGBG
static const char *
extract_fgbg(const char *src, int *result)
{
const char *dst = 0;
char *tmp = 0;
long value = strtol(src, &tmp, 0);
if ((dst = tmp) == 0) {
dst = src;
} else if (value >= 0) {
*result = (int) value;
}
while (*dst != 0 && *dst != ';')
dst++;
if (*dst == ';')
dst++;
return dst;
}
#endif
#define ReturnScreenError() do { _nc_set_screen(0); \
returnCode(ERR); } while (0)
/* OS-independent screen initializations */
NCURSES_EXPORT(int)
NCURSES_SP_NAME(_nc_setupscreen) (
#if NCURSES_SP_FUNCS
SCREEN **spp,
#endif
int slines,
int scolumns,
FILE *output,
int filtered,
int slk_format)
{
#ifndef USE_TERM_DRIVER
static const TTY null_TTY; /* all zeros iff uninitialized */
#endif
char *env;
int bottom_stolen = 0;
SCREEN *sp;
#ifndef USE_TERM_DRIVER
bool support_cookies = USE_XMC_SUPPORT;
#endif
T((T_CALLED("_nc_setupscreen(%d, %d, %p, %d, %d)"),
slines, scolumns, (void *) output, filtered, slk_format));
assert(CURRENT_SCREEN == 0); /* has been reset in newterm() ! */
#if NCURSES_SP_FUNCS
assert(spp != 0);
sp = *spp;
if (!sp) {
sp = _nc_alloc_screen_sp();
T(("_nc_alloc_screen_sp %p", (void *) sp));
*spp = sp;
}
if (sp == NULL) {
ReturnScreenError();
}
if ((sp->_acs_map = typeCalloc(chtype, ACS_LEN)) == NULL) {
ReturnScreenError();
}
if ((sp->_screen_acs_map = typeCalloc(bool, ACS_LEN)) == NULL) {
free(sp->_acs_map);
ReturnScreenError();
}
T(("created SP %p", (void *) sp));
sp->_next_screen = _nc_screen_chain;
_nc_screen_chain = sp;
if ((sp->_current_attr = typeCalloc(NCURSES_CH_T, 1)) == 0) {
ReturnScreenError();
}
#else
if (!_nc_alloc_screen()
|| ((SP->_acs_map = typeCalloc(chtype, ACS_LEN)) == 0)
|| ((SP->_screen_acs_map = typeCalloc(bool, ACS_LEN)) == 0)) {
returnCode(ERR);
}
T(("created SP %p", (void *) SP));
sp = SP; /* fixup so SET_LINES and SET_COLS works */
sp->_next_screen = _nc_screen_chain;
_nc_screen_chain = sp;
if ((sp->_current_attr = typeCalloc(NCURSES_CH_T, 1)) == 0) {
returnCode(ERR);
}
#endif
/*
* We should always check the screensize, just in case.
*/
_nc_set_screen(sp);
sp->_term = cur_term;
#ifdef USE_TERM_DRIVER
TCBOf(sp)->csp = sp;
_nc_get_screensize(sp, sp->_term, &slines, &scolumns);
#else
_nc_get_screensize(sp, &slines, &scolumns);
#endif
SET_LINES(slines);
SET_COLS(scolumns);
T((T_CREATE("screen %s %dx%d"),
NCURSES_SP_NAME(termname) (NCURSES_SP_ARG), slines, scolumns));
sp->_filtered = filtered;
/* implement filter mode */
if (filtered) {
slines = 1;
SET_LINES(slines);
#ifdef USE_TERM_DRIVER
CallDriver(sp, td_setfilter);
#else
/* *INDENT-EQLS* */
clear_screen = ABSENT_STRING;
cursor_address = ABSENT_STRING;
cursor_down = ABSENT_STRING;
cursor_up = ABSENT_STRING;
parm_down_cursor = ABSENT_STRING;
parm_up_cursor = ABSENT_STRING;
row_address = ABSENT_STRING;
cursor_home = carriage_return;
if (back_color_erase)
clr_eos = ABSENT_STRING;
#endif
T(("filter screensize %dx%d", slines, scolumns));
}
#ifdef __DJGPP__
T(("setting output mode to binary"));
fflush(output);
setmode(output, O_BINARY);
#endif
#if defined(EXP_WIN32_DRIVER)
T(("setting output mode to binary"));
fflush(output);
_setmode(fileno(output), _O_BINARY);
#endif
sp->_lines = (NCURSES_SIZE_T) slines;
sp->_lines_avail = (NCURSES_SIZE_T) slines;
sp->_columns = (NCURSES_SIZE_T) scolumns;
fflush(output);
sp->_ofd = output ? fileno(output) : -1;
sp->_ofp = output;
#if defined(EXP_WIN32_DRIVER)
if (output)
_setmode(fileno(output), _O_BINARY);
#endif
sp->out_limit = (size_t) ((2 + slines) * (6 + scolumns));
if ((sp->out_buffer = malloc(sp->out_limit)) == 0)
sp->out_limit = 0;
sp->out_inuse = 0;
SP_PRE_INIT(sp);
SetNoPadding(sp);
#if NCURSES_EXT_FUNCS
sp->_default_color = FALSE;
sp->_has_sgr_39_49 = FALSE;
/*
* Set our assumption of the terminal's default foreground and background
* colors. The curs_color man-page states that we can assume that the
* background is black. The origin of this assumption appears to be
* terminals that displayed colored text, but no colored backgrounds, e.g.,
* the first colored terminals around 1980. More recent ones with better
* technology can display not only colored backgrounds, but all
* combinations. So a terminal might be something other than "white" on
* black (green/black looks monochrome too), but black on white or even
* on ivory.
*
* White-on-black is the simplest thing to use for monochrome. Almost
* all applications that use color paint both text and background, so
* the distinction is moot. But a few do not - which is why we leave this
* configurable (a better solution is to use assume_default_colors() for
* the rare applications that do require that sort of appearance, since
* is appears that more users expect to be able to make a white-on-black
* or black-on-white display under control of the application than not).
*/
#ifdef USE_ASSUMED_COLOR
sp->_default_fg = COLOR_WHITE;
sp->_default_bg = COLOR_BLACK;
#else
sp->_default_fg = COLOR_DEFAULT;
sp->_default_bg = COLOR_DEFAULT;
#endif
/*
* Allow those assumed/default color assumptions to be overridden at
* runtime:
*/
if ((env = getenv("NCURSES_ASSUMED_COLORS")) != 0) {
int fg, bg;
char sep1, sep2;
int count = sscanf(env, "%d%c%d%c", &fg, &sep1, &bg, &sep2);
if (count >= 1) {
sp->_default_fg = ((fg >= 0 && fg < MaxColors) ? fg : COLOR_DEFAULT);
if (count >= 3) {
sp->_default_bg = ((bg >= 0 && bg < MaxColors) ? bg : COLOR_DEFAULT);
}
TR(TRACE_CHARPUT | TRACE_MOVE,
("from environment assumed fg=%d, bg=%d",
sp->_default_fg,
sp->_default_bg));
}
}
#if USE_COLORFGBG
/*
* If rxvt's $COLORFGBG variable is set, use it to specify the assumed
* default colors. Note that rxvt (mis)uses bold colors, equating a bold
* color to that value plus 8. We'll only use the non-bold color for now -
* decide later if it is worth having default attributes as well.
*/
if (getenv("COLORFGBG") != 0) {
const char *p = getenv("COLORFGBG");
TR(TRACE_CHARPUT | TRACE_MOVE, ("decoding COLORFGBG %s", p));
p = extract_fgbg(p, &(sp->_default_fg));
p = extract_fgbg(p, &(sp->_default_bg));
if (*p) /* assume rxvt was compiled with xpm support */
extract_fgbg(p, &(sp->_default_bg));
TR(TRACE_CHARPUT | TRACE_MOVE, ("decoded fg=%d, bg=%d",
sp->_default_fg, sp->_default_bg));
if (sp->_default_fg >= MaxColors) {
if (set_a_foreground != ABSENT_STRING
&& !strcmp(set_a_foreground, "\033[3%p1%dm")) {
set_a_foreground = strdup("\033[3%?%p1%{8}%>%t9%e%p1%d%;m");
} else {
sp->_default_fg %= MaxColors;
}
}
if (sp->_default_bg >= MaxColors) {
if (set_a_background != ABSENT_STRING
&& !strcmp(set_a_background, "\033[4%p1%dm")) {
set_a_background = strdup("\033[4%?%p1%{8}%>%t9%e%p1%d%;m");
} else {
sp->_default_bg %= MaxColors;
}
}
}
#endif
#endif /* NCURSES_EXT_FUNCS */
sp->_maxclick = DEFAULT_MAXCLICK;
sp->_mouse_event = no_mouse_event;
sp->_mouse_inline = no_mouse_inline;
sp->_mouse_parse = no_mouse_parse;
sp->_mouse_resume = no_mouse_resume;
sp->_mouse_wrap = no_mouse_wrap;
sp->_mouse_fd = -1;
/*
* If we've no magic cookie support, we suppress attributes that xmc would
* affect, i.e., the attributes that affect the rendition of a space.
*/
sp->_ok_attributes = NCURSES_SP_NAME(termattrs) (NCURSES_SP_ARG);
if (NCURSES_SP_NAME(has_colors) (NCURSES_SP_ARG)) {
sp->_ok_attributes |= A_COLOR;
}
#ifdef USE_TERM_DRIVER
_nc_cookie_init(sp);
#else
#if USE_XMC_SUPPORT
/*
* If we have no magic-cookie support compiled-in, or if it is suppressed
* in the environment, reset the support-flag.
*/
if (magic_cookie_glitch >= 0) {
if (getenv("NCURSES_NO_MAGIC_COOKIE") != 0) {
support_cookies = FALSE;
}
}
#endif
if (!support_cookies && magic_cookie_glitch >= 0) {
T(("will disable attributes to work w/o magic cookies"));
}
if (magic_cookie_glitch > 0) { /* tvi, wyse */
sp->_xmc_triggers = sp->_ok_attributes & XMC_CONFLICT;
#if 0
/*
* We "should" treat colors as an attribute. The wyse350 (and its
* clones) appear to be the only ones that have both colors and magic
* cookies.
*/
if (has_colors()) {
sp->_xmc_triggers |= A_COLOR;
}
#endif
sp->_xmc_suppress = sp->_xmc_triggers & (chtype) ~(A_BOLD);
T(("magic cookie attributes %s", _traceattr(sp->_xmc_suppress)));
/*
* Supporting line-drawing may be possible. But make the regular
* video attributes work first.
*/
acs_chars = ABSENT_STRING;
ena_acs = ABSENT_STRING;
enter_alt_charset_mode = ABSENT_STRING;
exit_alt_charset_mode = ABSENT_STRING;
#if USE_XMC_SUPPORT
/*
* To keep the cookie support simple, suppress all of the optimization
* hooks except for clear_screen and the cursor addressing.
*/
if (support_cookies) {
clr_eol = ABSENT_STRING;
clr_eos = ABSENT_STRING;
set_attributes = ABSENT_STRING;
}
#endif
} else if (magic_cookie_glitch == 0) { /* hpterm */
}
/*
* If magic cookies are not supported, cancel the strings that set
* video attributes.
*/
if (!support_cookies && magic_cookie_glitch >= 0) {
magic_cookie_glitch = ABSENT_NUMERIC;
set_attributes = ABSENT_STRING;
enter_blink_mode = ABSENT_STRING;
enter_bold_mode = ABSENT_STRING;
enter_dim_mode = ABSENT_STRING;
enter_reverse_mode = ABSENT_STRING;
enter_standout_mode = ABSENT_STRING;
enter_underline_mode = ABSENT_STRING;
}
/* initialize normal acs before wide, since we use mapping in the latter */
#if !USE_WIDEC_SUPPORT
if (_nc_unicode_locale() && _nc_locale_breaks_acs(sp->_term)) {
acs_chars = NULL;
ena_acs = NULL;
enter_alt_charset_mode = NULL;
exit_alt_charset_mode = NULL;
set_attributes = NULL;
}
#endif
#endif
NCURSES_SP_NAME(_nc_init_acs) (NCURSES_SP_ARG);
#if USE_WIDEC_SUPPORT
sp->_screen_unicode = _nc_unicode_locale();
if (_nc_wacs == 0) {
_nc_init_wacs();
}
if (_nc_wacs == 0) {
ReturnScreenError();
}
sp->_screen_acs_fix = (sp->_screen_unicode
&& _nc_locale_breaks_acs(sp->_term));
#endif
env = _nc_get_locale();
sp->_legacy_coding = ((env == 0)
|| !strcmp(env, "C")
|| !strcmp(env, "POSIX"));
T(("legacy-coding %d", sp->_legacy_coding));
sp->_nc_sp_idcok = TRUE;
sp->_nc_sp_idlok = FALSE;
sp->oldhash = 0;
sp->newhash = 0;
T(("creating newscr"));
NewScreen(sp) = NCURSES_SP_NAME(newwin) (NCURSES_SP_ARGx slines, scolumns,
0, 0);
if (NewScreen(sp) == 0) {
ReturnScreenError();
}
T(("creating curscr"));
CurScreen(sp) = NCURSES_SP_NAME(newwin) (NCURSES_SP_ARGx slines, scolumns,
0, 0);
if (CurScreen(sp) == 0) {
ReturnScreenError();
}
#if !USE_REENTRANT
newscr = NewScreen(sp);
curscr = CurScreen(sp);
#endif
#if USE_SIZECHANGE
sp->_resize = NCURSES_SP_NAME(resizeterm);
sp->_ungetch = safe_ungetch;
#endif
NewScreen(sp)->_clear = TRUE;
CurScreen(sp)->_clear = FALSE;
/*
* Get the current tty-modes. setupterm() may already have done this,
* unless we use the term-driver.
*/
#ifndef USE_TERM_DRIVER
if (cur_term != 0 &&
!memcmp(&cur_term->Ottyb, &null_TTY, sizeof(TTY)))
#endif
{
NCURSES_SP_NAME(def_shell_mode) (NCURSES_SP_ARG);
NCURSES_SP_NAME(def_prog_mode) (NCURSES_SP_ARG);
}
if (safe_ripoff_sp && safe_ripoff_sp != safe_ripoff_stack) {
ripoff_t *rop;
for (rop = safe_ripoff_stack;
rop != safe_ripoff_sp && (rop - safe_ripoff_stack) < N_RIPS;
rop++) {
/* If we must simulate soft labels, grab off the line to be used.
We assume that we must simulate, if it is none of the standard
formats (4-4 or 3-2-3) for which there may be some hardware
support. */
if (rop->hook == _nc_slk_initialize) {
if (!TerminalOf(sp)) {
continue;
}
if (!(NumLabels <= 0 || !SLK_STDFMT(slk_format))) {
continue;
}
}
if (rop->hook) {
int count;
WINDOW *w;
count = (rop->line < 0) ? -rop->line : rop->line;
T(("ripping off %i lines at %s", count,
((rop->line < 0)
? "bottom"
: "top")));
w = NCURSES_SP_NAME(newwin) (NCURSES_SP_ARGx
count, scolumns,
((rop->line < 0)
? sp->_lines_avail - count
: 0),
0);
if (w) {
rop->win = w;
rop->hook(w, scolumns);
} else {
ReturnScreenError();
}
if (rop->line < 0) {
bottom_stolen += count;
} else {
sp->_topstolen = (NCURSES_SIZE_T) (sp->_topstolen + count);
}
sp->_lines_avail = (NCURSES_SIZE_T) (sp->_lines_avail - count);
}
}
/* reset the stack */
safe_ripoff_sp = safe_ripoff_stack;
}
T(("creating stdscr"));
(void) bottom_stolen;
assert((sp->_lines_avail + sp->_topstolen + bottom_stolen) == slines);
if ((StdScreen(sp) = NCURSES_SP_NAME(newwin) (NCURSES_SP_ARGx
sp->_lines_avail,
scolumns, 0, 0)) == 0) {
ReturnScreenError();
}
SET_LINES(sp->_lines_avail);
#if !USE_REENTRANT
stdscr = StdScreen(sp);
#endif
sp->_prescreen = FALSE;
returnCode(OK);
}
#if NCURSES_SP_FUNCS
NCURSES_EXPORT(int)
_nc_setupscreen(int slines GCC_UNUSED,
int scolumns GCC_UNUSED,
FILE *output,
int filtered,
int slk_format)
{
SCREEN *sp = 0;
int rc = NCURSES_SP_NAME(_nc_setupscreen) (&sp,
slines,
scolumns,
output,
filtered,
slk_format);
if (rc != OK)
_nc_set_screen(0);
return rc;
}
#endif
/*
* The internal implementation interprets line as the number of lines to rip
* off from the top or bottom.
*/
NCURSES_EXPORT(int)
NCURSES_SP_NAME(_nc_ripoffline) (NCURSES_SP_DCLx
int line,
int (*init) (WINDOW *, int))
{
int code = ERR;
TR_FUNC_BFR(1);
START_TRACE();
T((T_CALLED("ripoffline(%p,%d,%s)"),
(void *) SP_PARM, line,
TR_FUNC_ARG(0, init)));
#if NCURSES_SP_FUNCS
if (SP_PARM != 0 && SP_PARM->_prescreen)
#endif
{
if (line == 0) {
code = OK;
} else {
if (safe_ripoff_sp == 0) {
safe_ripoff_sp = safe_ripoff_stack;
}
if (safe_ripoff_sp < safe_ripoff_stack + N_RIPS) {
safe_ripoff_sp->line = line;
safe_ripoff_sp->hook = init;
(safe_ripoff_sp)++;
T(("ripped-off %d:%d chunks",
(int) (safe_ripoff_sp - safe_ripoff_stack), N_RIPS));
code = OK;
}
}
}
returnCode(code);
}
#if NCURSES_SP_FUNCS
NCURSES_EXPORT(int)
_nc_ripoffline(int line, int (*init) (WINDOW *, int))
{
int rc;
_nc_init_pthreads();
_nc_lock_global(prescreen);
START_TRACE();
rc = NCURSES_SP_NAME(_nc_ripoffline) (CURRENT_SCREEN_PRE, line, init);
_nc_unlock_global(prescreen);
return rc;
}
#endif
NCURSES_EXPORT(int)
NCURSES_SP_NAME(ripoffline) (NCURSES_SP_DCLx
int line,
int (*init) (WINDOW *, int))
{
START_TRACE();
return NCURSES_SP_NAME(_nc_ripoffline) (NCURSES_SP_ARGx
(line < 0) ? -1 : 1,
init);
}
#if NCURSES_SP_FUNCS
NCURSES_EXPORT(int)
ripoffline(int line, int (*init) (WINDOW *, int))
{
int rc;
_nc_init_pthreads();
_nc_lock_global(prescreen);
START_TRACE();
rc = NCURSES_SP_NAME(ripoffline) (CURRENT_SCREEN_PRE, line, init);
_nc_unlock_global(prescreen);
return rc;
}
#endif
Reference in a new issue View git blame Copy permalink