diff options
Diffstat (limited to 'usr.bin/mandoc/roff.c')
| -rw-r--r-- | usr.bin/mandoc/roff.c | 55 |
1 files changed, 54 insertions, 1 deletions
diff --git a/usr.bin/mandoc/roff.c b/usr.bin/mandoc/roff.c index 35eec08824c..9a8e77a9893 100644 --- a/usr.bin/mandoc/roff.c +++ b/usr.bin/mandoc/roff.c @@ -1,4 +1,4 @@ -/* $OpenBSD: roff.c,v 1.241 2020/01/19 17:59:01 schwarze Exp $ */ +/* $OpenBSD: roff.c,v 1.242 2020/02/27 01:25:58 schwarze Exp $ */ /* * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv> * Copyright (c) 2010-2015, 2017-2020 Ingo Schwarze <schwarze@openbsd.org> @@ -1112,6 +1112,59 @@ roff_node_delete(struct roff_man *man, struct roff_node *n) roff_node_free(n); } +int +roff_node_transparent(struct roff_node *n) +{ + if (n == NULL) + return 0; + if (n->type == ROFFT_COMMENT || n->flags & NODE_NOPRT) + return 1; + switch (n->tok) { + case ROFF_ft: + case ROFF_ll: + case ROFF_mc: + case ROFF_po: + case ROFF_ta: + case MDOC_Db: + case MDOC_Es: + case MDOC_Sm: + case MDOC_Tg: + case MAN_DT: + case MAN_UC: + case MAN_PD: + case MAN_AT: + return 1; + default: + return 0; + } +} + +struct roff_node * +roff_node_child(struct roff_node *n) +{ + for (n = n->child; roff_node_transparent(n); n = n->next) + continue; + return n; +} + +struct roff_node * +roff_node_prev(struct roff_node *n) +{ + do { + n = n->prev; + } while (roff_node_transparent(n)); + return n; +} + +struct roff_node * +roff_node_next(struct roff_node *n) +{ + do { + n = n->next; + } while (roff_node_transparent(n)); + return n; +} + void deroff(char **dest, const struct roff_node *n) { |