/* Return pointer to copy of filename in the command buffer */
static const char * get_filename( const char ** const ibufpp )
{
static char * buf = 0;
static int bufsz = 0;
int size, n;
*ibufpp = skip_blanks( *ibufpp );
if( **ibufpp != '\n' )
{
if( !get_extended_line( ibufpp, &size, true ) ) return 0;
if( **ibufpp == '!' )
{
++*ibufpp;
return get_shell_command( ibufpp );
}
else if( size > path_max( 0 ) )
{ set_error_msg( "Filename too long" ); return 0; }
}
else if( !traditional() && !def_filename[0] )
{ set_error_msg( "No current filename" ); return 0; }
if( !resize_buffer( &buf, &bufsz, path_max( 0 ) + 1 ) ) return 0;
for( n = 0; **ibufpp != '\n'; ++n, ++*ibufpp ) buf[n] = **ibufpp;
buf[n] = 0;
while( **ibufpp == '\n' ) ++*ibufpp; /* skip newline */
return ( may_access_filename( buf ) ? buf : 0 );
}
static void sighup_handler( int signum )
{
if( signum ) {} /* keep compiler happy */
if( mutex ) sighup_pending = true;
else
{
const char hb[] = "ed.hup";
sighup_pending = false;
if( last_addr() && modified() &&
write_file( hb, "w", 1, last_addr() ) < 0 )
{
char * const s = getenv( "HOME" );
const int len = ( s ? strlen( s ) : 0 );
const int need_slash = ( ( !len || s[len-1] != '/' ) ? 1 : 0 );
char * const hup = ( ( len + need_slash + (int)sizeof hb < path_max( 0 ) ) ?
(char *) malloc( len + need_slash + sizeof hb ) : 0 );
if( len && hup ) /* hup filename */
{
memcpy( hup, s, len );
if( need_slash ) hup[len] = '/';
memcpy( hup + len + need_slash, hb, sizeof hb );
if( write_file( hup, "w", 1, last_addr() ) >= 0 ) exit( 0 );
}
exit( 1 ); /* hup file write failed */
}
exit( 0 );
}
}
