159 lines
3.0 KiB
C
159 lines
3.0 KiB
C
|
|
/* This work is copyrighted. See COPYRIGHT.OLD & COPYRIGHT.NEW for *
|
|
* details. If they are missing then this copy is in violation of *
|
|
* the copyright conditions. */
|
|
|
|
/*
|
|
** lib_newterm.c
|
|
**
|
|
** The newterm() function.
|
|
**
|
|
*/
|
|
|
|
#include <stdlib.h>
|
|
#include "curses.priv.h"
|
|
#include <nterm.h>
|
|
#ifdef SVR4_ACTION
|
|
#define _POSIX_SOURCE
|
|
#endif
|
|
#include <signal.h>
|
|
|
|
#ifdef MYTINFO
|
|
int LINES, COLS;
|
|
#endif
|
|
|
|
static void cleanup(int sig)
|
|
{
|
|
|
|
if (sig == SIGSEGV)
|
|
fprintf(stderr, "Got a segmentation violation signal, cleaning up and exiting\n");
|
|
endwin();
|
|
exit(1);
|
|
}
|
|
|
|
WINDOW *stdscr, *curscr, *newscr;
|
|
SCREEN *SP;
|
|
|
|
struct ripoff_t
|
|
{
|
|
int line;
|
|
int (*hook)();
|
|
}
|
|
rippedoff[5], *rsp = rippedoff;
|
|
|
|
SCREEN * newterm(char *term, FILE *ofp, FILE *ifp)
|
|
{
|
|
sigaction_t act;
|
|
int errret;
|
|
int stolen, topstolen;
|
|
extern char _ncurses_copyright[];
|
|
char *use_it = _ncurses_copyright;
|
|
|
|
use_it = use_it; /* shut up compiler */
|
|
#ifdef TRACE
|
|
_init_trace();
|
|
T(("newterm(%s,%x,%x) called", term, ofp, ifp));
|
|
#endif
|
|
|
|
#ifdef MYTINFO
|
|
if (setupterm(term, fileno(ofp), &errret) != OK)
|
|
return NULL;
|
|
COLS = columns;
|
|
LINES = lines;
|
|
#else
|
|
if (setupterm(term, fileno(ofp), &errret) != 1)
|
|
return NULL;
|
|
#endif
|
|
|
|
if ((SP = (SCREEN *) malloc(sizeof *SP)) == NULL)
|
|
return NULL;
|
|
|
|
if (ofp == stdout && ifp == stdin) {
|
|
SP->_ofp = stdout;
|
|
SP->_ifp = stdin;
|
|
} else {
|
|
SP->_ofp = ofp;
|
|
SP->_ifp = ofp;
|
|
}
|
|
SP->_term = cur_term;
|
|
SP->_cursrow = -1;
|
|
SP->_curscol = -1;
|
|
SP->_keytry = UNINITIALISED;
|
|
SP->_nl = TRUE;
|
|
SP->_raw = FALSE;
|
|
SP->_cbreak = FALSE;
|
|
SP->_echo = TRUE;
|
|
SP->_nlmapping = TRUE;
|
|
SP->_fifohead = -1;
|
|
SP->_fifotail = 0;
|
|
SP->_fifopeek = 0;
|
|
|
|
if (enter_ca_mode)
|
|
putp(enter_ca_mode);
|
|
|
|
init_acs();
|
|
|
|
T(("creating newscr"));
|
|
if ((newscr = newwin(lines, columns, 0, 0)) == (WINDOW *)NULL)
|
|
return(NULL);
|
|
|
|
T(("creating curscr"));
|
|
if ((curscr = newwin(lines, columns, 0, 0)) == (WINDOW *)NULL)
|
|
return(NULL);
|
|
|
|
SP->_newscr = newscr;
|
|
SP->_curscr = curscr;
|
|
|
|
newscr->_clear = TRUE;
|
|
curscr->_clear = FALSE;
|
|
|
|
stolen = topstolen = 0;
|
|
for (rsp = rippedoff; rsp->line; rsp++)
|
|
{
|
|
if (rsp->hook)
|
|
if (rsp->line < 0)
|
|
rsp->hook(newwin(1,COLS, LINES-1,0), COLS);
|
|
else
|
|
rsp->hook(newwin(1,COLS, topstolen++,0), COLS);
|
|
--LINES;
|
|
stolen++;
|
|
}
|
|
|
|
act.sa_handler = tstp;
|
|
sigemptyset(&act.sa_mask);
|
|
act.sa_flags = 0;
|
|
sigaction(SIGTSTP, &act, NULL);
|
|
act.sa_handler = cleanup;
|
|
sigemptyset(&act.sa_mask);
|
|
act.sa_flags = 0;
|
|
sigaction(SIGINT, &act, NULL);
|
|
sigaction(SIGTERM, &act, NULL);
|
|
#if 0
|
|
sigaction(SIGSEGV, &act, NULL);
|
|
#endif
|
|
if (stdscr == NULL)
|
|
if ((stdscr = newwin(lines - stolen, columns, topstolen, 0)) == NULL)
|
|
return(NULL);
|
|
|
|
T(("newterm returns %x", SP));
|
|
|
|
return(SP);
|
|
}
|
|
|
|
int
|
|
ripoffline(int line, int (*init)(WINDOW *, int))
|
|
{
|
|
if (line == 0)
|
|
return(OK);
|
|
|
|
if (rsp >= rippedoff + sizeof(rippedoff)/sizeof(rippedoff[0]))
|
|
return(ERR);
|
|
|
|
rsp->line = line;
|
|
rsp->hook = init;
|
|
rsp++;
|
|
|
|
return(OK);
|
|
}
|
|
|