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Tag list handling: add two new helpers

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taglist_added() simply figures out the tags that are in the new list but
not in the original list.

taglist_dump() makes debugging things easier.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This commit is contained in:
Dirk Hohndel 2015-05-02 12:16:03 -07:00
parent 5810aedeac
commit e077206bb8
2 changed files with 24 additions and 0 deletions
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22
dive.c
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@ -2645,7 +2645,29 @@ static bool taglist_contains_all(struct tag_entry *subtl, struct tag_entry *supe
subtl = subtl->next;
}
return true;
}
struct tag_entry *taglist_added(struct tag_entry *original_list, struct tag_entry *new_list)
{
struct tag_entry *added_list = NULL;
while (new_list) {
if (!taglist_contains(original_list, new_list->tag->name))
taglist_add_tag(&added_list, new_list->tag->name);
new_list = new_list->next;
}
return added_list;
}
void dump_taglist(const char *intro, struct tag_entry *tl)
{
char *comma = "";
fprintf(stderr, "%s", intro);
while(tl) {
fprintf(stderr, "%s %s", comma, tl->tag->name);
comma = ",";
tl = tl->next;
}
fprintf(stderr, "\n");
}
// if tl1 is both a subset and superset of tl2 they must be the same

2
dive.h
View file

@ -224,6 +224,8 @@ struct tag_entry {
extern struct tag_entry *g_tag_list;
struct divetag *taglist_add_tag(struct tag_entry **tag_list, const char *tag);
struct tag_entry *taglist_added(struct tag_entry *original_list, struct tag_entry *new_list);
void dump_taglist(const char *intro, struct tag_entry *tl);
/*
* Writes all divetags in tag_list to buffer, limited by the buffer's (len)gth.