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New smartlist function to see if two lists of strings are equal.

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We'll use this to detect changes in CSV options.
This commit is contained in:
Nick Mathewson 2011-05-13 16:18:53 -04:00
parent 5f2a1a7b4f
commit 2253697a04
2 changed files with 21 additions and 0 deletions
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19
src/common/container.c
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@ -215,6 +215,25 @@ smartlist_string_num_isin(const smartlist_t *sl, int num)
return smartlist_string_isin(sl, buf);
}
/** Return true iff the two lists contain the same strings in the same
* order, or if they are both NULL. */
int
smartlist_strings_eq(const smartlist_t *sl1, const smartlist_t *sl2)
{
if (sl1 == NULL)
return sl2 == NULL;
if (sl2 == NULL)
return 0;
if (smartlist_len(sl1) != smartlist_len(sl2))
return 0;
SMARTLIST_FOREACH(sl1, const char *, cp1, {
const char *cp2 = smartlist_get(sl2, cp1_sl_idx);
if (strcmp(cp1, cp2))
return 0;
});
return 1;
}
/** Return true iff <b>sl</b> has some element E such that
* tor_memeq(E,<b>element</b>,DIGEST_LEN)
*/

2
src/common/container.h
View File

@ -42,6 +42,8 @@ int smartlist_string_pos(const smartlist_t *, const char *elt) ATTR_PURE;
int smartlist_string_isin_case(const smartlist_t *sl, const char *element)
ATTR_PURE;
int smartlist_string_num_isin(const smartlist_t *sl, int num) ATTR_PURE;
int smartlist_strings_eq(const smartlist_t *sl1, const smartlist_t *sl2)
ATTR_PURE;
int smartlist_digest_isin(const smartlist_t *sl, const char *element)
ATTR_PURE;
int smartlist_overlap(const smartlist_t *sl1, const smartlist_t *sl2)