From: Sascha Hauer <s.hauer@pengutronix.de>
To: Barebox List <barebox@lists.infradead.org>
Subject: [PATCH 1/3] stringlist: Add adding sort uniq
Date: Fri, 5 Mar 2021 12:03:27 +0100 [thread overview]
Message-ID: <20210305110329.31046-1-s.hauer@pengutronix.de> (raw)
Function to add an entry sorted to a string list only when it doesn't
exist.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
include/stringlist.h | 1 +
lib/stringlist.c | 23 +++++++++++++++++++++++
2 files changed, 24 insertions(+)
diff --git a/include/stringlist.h b/include/stringlist.h
index 5cd452ca5f..dbf159da91 100644
--- a/include/stringlist.h
+++ b/include/stringlist.h
@@ -12,6 +12,7 @@ struct string_list {
int string_list_add(struct string_list *sl, const char *str);
int string_list_add_asprintf(struct string_list *sl, const char *fmt, ...);
int string_list_add_sorted(struct string_list *sl, const char *str);
+int string_list_add_sort_uniq(struct string_list *sl, const char *str);
int string_list_contains(struct string_list *sl, const char *str);
void string_list_print_by_column(struct string_list *sl);
diff --git a/lib/stringlist.c b/lib/stringlist.c
index 8e92c1b207..719fecdaa4 100644
--- a/lib/stringlist.c
+++ b/lib/stringlist.c
@@ -60,6 +60,29 @@ int string_list_add_sorted(struct string_list *sl, const char *str)
return 0;
}
+int string_list_add_sort_uniq(struct string_list *sl, const char *str)
+{
+ struct string_list *new, *entry = sl;
+
+ string_list_for_each_entry(entry, sl) {
+ int cmp = strcmp(entry->str, str);
+
+ if (cmp < 0)
+ continue;
+ if (cmp == 0)
+ return 0;
+
+ break;
+ }
+
+ new = xmalloc(sizeof(*new));
+ new->str = xstrdup(str);
+
+ list_add_tail(&new->list, &entry->list);
+
+ return 0;
+}
+
int string_list_contains(struct string_list *sl, const char *str)
{
struct string_list *entry;
--
2.29.2
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next reply other threads:[~2021-03-05 11:05 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-05 11:03 Sascha Hauer [this message]
2021-03-05 11:03 ` [PATCH 2/3] stringlist: Initialize HEAD str member to NULL Sascha Hauer
2021-03-05 11:03 ` [PATCH 3/3] complete: Use string_list_add_sort_uniq() Sascha Hauer
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