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/***************************************************************************
*
* $Header: /usr/local/cvsroot/utils/ytree/termcap.c,v 1.9 1997/08/13 12:24:58 werner Rel $
*
* Termcap Term-I/O
*
***************************************************************************/
#include "ytree.h"
#ifdef TERMCAP
#ifdef __NeXT__
char tcdummy[256], tcbuf[1024];
char *tcdptr = tcdummy;
#else
# define tcbuf NULL
# define tcdummy NULL
#endif /* __NeXT__ */
#undef wgetch
#undef initscr
#undef endwin
typedef struct
{
int key_code;
char *termcap_name;
char *key_sequence;
} SpecialKey;
static SpecialKey special_key[] = {
{ KEY_BTAB, "kB", NULL },
{ KEY_DOWN, "kd", NULL },
{ KEY_UP, "ku", NULL },
{ KEY_LEFT, "kl", NULL },
{ KEY_RIGHT, "kr", NULL },
{ KEY_END, "kH", NULL },
{ KEY_HOME, "kh", NULL },
{ KEY_NPAGE, "kN", NULL },
{ KEY_PPAGE, "kP", NULL },
{ KEY_DC, "kD", NULL },
{ KEY_BACKSPACE, "kb", NULL },
{ KEY_EIC, "kM", NULL },
{ KEY_IC, "kI", NULL },
{ KEY_DL, "kL", NULL },
{ -1, NULL, NULL }
};
static int TermcapMultiByte( WINDOW *win, int ch );
static void SigAlarm( int signo );
static jmp_buf env_alarm;
static char *reverse;
static char *normal;
void TermcapVidattr( int attr )
{
if( normal && reverse )
{
if( attr == 0 ) putp( normal );
else
{
if( attr & A_REVERSE ) putp( reverse );
}
}
}
int TermcapWgetch( WINDOW *win )
{
int ch;
SpecialKey *sk_ptr;
BOOL one_matched = FALSE;
int i;
ch = wgetch( stdscr );
for( i=0, sk_ptr = special_key;
sk_ptr->key_code > 0;
sk_ptr = &special_key[++i]
)
{
/* Ein-Byte Codes ausblenden */
/*---------------------------*/
if( sk_ptr->key_sequence && *(sk_ptr->key_sequence) == ch )
{
/* Erstes Zeichen matched */
/*------------------------*/
if( sk_ptr->key_sequence[1] == '\0' )
{
/* 1 Byte-Code */
/*-------------*/
ch = sk_ptr->key_code;
break;
}
one_matched = TRUE;
}
}
if( one_matched )
{
/* Multi-Byte Code */
/*-----------------*/
ch = TermcapMultiByte( win, ch );
}
return( ch );
}
static int TermcapMultiByte( WINDOW *win, int ch )
{
SpecialKey *sk_ptr;
char buffer[80];
BOOL found;
int i, j;
memset( buffer, 0, sizeof( buffer ) );
*buffer = ch;
if( signal( SIGALRM, SigAlarm ) == SIG_ERR )
{
ERROR_MSG( "signal SIGALRM failed*ABORT" );
exit( 1 );
}
if( setjmp( env_alarm ) )
{
return( ch );
}
alarm( 1 );
for( j=1, found = FALSE; !found && j < sizeof( buffer ); j++ )
{
buffer[j] = wgetch( win );
for( i=0, sk_ptr = special_key;
sk_ptr->key_code > 0;
sk_ptr = &special_key[++i]
)
{
if( sk_ptr->key_sequence && !strcmp( sk_ptr->key_sequence, buffer ) )
{
ch = sk_ptr->key_code;
found = TRUE;
break;
}
}
}
alarm( 0 );
return( ch );
}
static void SigAlarm( int signo )
{
longjmp( env_alarm, 1 );
}
void TermcapInitscr()
{
int i;
initscr();
tgetent( tcbuf, getenv( "TERM" ) );
for( i=0; special_key[i].key_code > 0; i++ )
{
#ifdef __NeXT__
tcdptr = tcdummy;
special_key[i].key_sequence = Strdup(tgetstr( special_key[i].termcap_name, &tcdptr ));
#else
special_key[i].key_sequence = tgetstr( special_key[i].termcap_name, NULL );
#endif
}
#ifdef __NeXT__
reverse = Strdup(tgetstr( "so", &tcdptr ));
normal = Strdup(tgetstr( "se", &tcdptr ));
#else
reverse = tgetstr( "so", tcdummy );
normal = tgetstr( "se", tcdummy );
#endif
}
void TermcapEndwin()
{
nl();
endwin();
putchar( '\n' );
}
#endif /* TERMCAP */
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