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stringlist-functions: add sorted insert 

Add sorted insert in stringlist functions.
Also added function to checked if string is already
in string list.

Signed-off-by: Alexander Aring <a.aring@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Alexander Aring 2011-12-21 09:07:55 +01:00 committed by Sascha Hauer
parent 56ddc233e4
commit 049100fe37
2 changed files with 36 additions and 0 deletions
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2
include/stringlist.h
View File

@ -9,6 +9,8 @@ struct string_list {
};
int string_list_add(struct string_list *sl, char *str);
int string_list_add_sorted(struct string_list *sl, char *str);
int string_list_contains(struct string_list *sl, char *str);
void string_list_print_by_column(struct string_list *sl);
static inline void string_list_init(struct string_list *sl)

34
lib/stringlist.c
View File

@ -3,6 +3,15 @@
#include <malloc.h>
#include <stringlist.h>
static int string_list_compare(struct list_head *a, struct list_head *b)
{
char *astr, *bstr;
astr = (char *)list_entry(a, struct string_list, list)->str;
bstr = (char *)list_entry(b, struct string_list, list)->str;
return strcmp(astr, bstr);
}
int string_list_add(struct string_list *sl, char *str)
{
struct string_list *new;
@ -16,6 +25,31 @@ int string_list_add(struct string_list *sl, char *str)
return 0;
}
int string_list_add_sorted(struct string_list *sl, char *str)
{
struct string_list *new;
new = xmalloc(sizeof(struct string_list) + strlen(str) + 1);
strcpy(new->str, str);
list_add_sort(&new->list, &sl->list, string_list_compare);
return 0;
}
int string_list_contains(struct string_list *sl, char *str)
{
struct string_list *entry;
list_for_each_entry(entry, &sl->list, list) {
if (!strcmp(str, entry->str))
return 1;
}
return 0;
}
void string_list_print_by_column(struct string_list *sl)
{
int len = 0, num, i;