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/* 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 "terminfo.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;
SP->_endwin = FALSE;
SP->_checkfd = fileno(ifp);
typeahead(fileno(ifp));
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 = newwin(lines - stolen, columns, topstolen, 0)) == NULL)
return(NULL);
SP->_stdscr = stdscr;
def_shell_mode();
def_prog_mode();
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);
}
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