bin/sh/input.c

76  * The parsefile structure pointed to by the global variable parsefile
80 struct parsefile {
81 	struct parsefile *prev;	/* preceding file on stack */
94 int parsenleft;			/* copy of parsefile->nleft */
95 static int parselleft;		/* copy of parsefile->lleft */
96 const char *parsenextc;		/* copy of parsefile->nextc */
98 static struct parsefile basepf = {	/* top level input file */
102 static struct parsefile *parsefile = &basepf;	/* current input file */
163 	parsenextc = parsefile->buf;
167 	if (parsefile->fd == 0 && el) {
181 			memcpy(parsefile->buf, rl_cp, nr);
190 		nr = read(parsefile->fd, parsefile->buf, BUFSIZ);
196                         if (parsefile->fd == 0 && errno == EWOULDBLOCK) {
229 	while (parsefile->strpush) {
235 		if (parsenleft == -1 && parsefile->strpush->ap != NULL)
241 	if (parsenleft == EOF_NLEFT || parsefile->buf == NULL)
254 	q = p = parsefile->buf + (parsenextc - parsefile->buf);
287 	if (parsefile->fd == 0 && hist &&
317 	if (parsefile->strpush)
319 	if (parsenleft == EOF_NLEFT || parsefile->buf == NULL)
337  * Push a string back onto the input at this current parsefile level.
347 	if (parsefile->strpush) {
349 		sp->prev = parsefile->strpush;
350 		parsefile->strpush = sp;
352 		sp = parsefile->strpush = &(parsefile->basestrpush);
367 	struct strpush *sp = parsefile->strpush;
380 	parsefile->strpush = sp->prev;
381 	if (sp != &(parsefile->basestrpush))
422 		parsefile->buf = ckmalloc(BUFSIZ + 1);
424 	if (parsefile->fd > 0)
425 		close(parsefile->fd);
426 	parsefile->fd = fd;
427 	if (parsefile->buf == NULL)
428 		parsefile->buf = ckmalloc(BUFSIZ + 1);
446 	parsefile->buf = NULL;
461 	struct parsefile *pf;
463 	parsefile->nleft = parsenleft;
464 	parsefile->lleft = parselleft;
465 	parsefile->nextc = parsenextc;
466 	parsefile->linno = plinno;
467 	pf = (struct parsefile *)ckmalloc(sizeof (struct parsefile));
468 	pf->prev = parsefile;
472 	parsefile = pf;
479 	struct parsefile *pf = parsefile;
488 	parsefile = pf->prev;
490 	parsenleft = parsefile->nleft;
491 	parselleft = parsefile->lleft;
492 	parsenextc = parsefile->nextc;
493 	plinno = parsefile->linno;
502 struct parsefile *
505 	return parsefile;
516 popfilesupto(struct parsefile *file)
518 	while (parsefile != file && parsefile != &basepf)
520 	if (parsefile != file)
531 	while (parsefile != &basepf)
546 	if (parsefile->fd > 0) {
547 		close(parsefile->fd);
548 		parsefile->fd = 0;