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authorChantry Xavier <shiningxc@gmail.com>2008-05-10 18:47:42 +0200
committerDan McGee <dan@archlinux.org>2008-05-13 15:49:02 -0500
commitf43805d875ad5c672afbbfff48bded2087204773 (patch)
tree6cfc9e8ea40230aa1ec3349361f6f1f1fad63f37 /lib/libalpm/alpm_list.c
parent8248b4bfb1abe175d73e20106a18172da5296836 (diff)
Cleanup usages of alpm_list_find and alpm_list_remove.
* remove obsolete and unused *_cmp helper functions like deppkg_cmp and _alpm_grp_cmp * new alpm_list_remove_str function, used 6 times in handle.c * remove _alpm_prov_cmp / _alpm_db_whatprovides and replace them by a more general alpm_find_pkg_satisfiers with a cleaner implementation. before: alpm_db_whatprovides(db, targ) after: alpm_find_pkg_satisfiers(alpm_db_getpkgcache(db), targ) * remove satisfycmp and replace alpm_list_find + satisfycmp usage by _alpm_find_dep_satisfiers. before : alpm_list_find(_alpm_db_get_pkgcache(db), dep, satisfycmp) after : _alpm_find_dep_satisfiers(_alpm_db_get_pkgcache(db), dep) * remove _alpm_pkgname_pkg_cmp, which was used with alpm_list_remove, and use _alpm_pkg_find + alpm_list_remove with _alpm_pkg_cmp instead. This commit actually get rids of all complicated and asymmetric _cmp functions. I first thought these functions were worth it, be caused it allowed us to reuse list_find and list_remove. But this was at the detriment of the clarity and also the ease of use of these functions, dangerous because of their asymmetricity. Signed-off-by: Chantry Xavier <shiningxc@gmail.com> Signed-off-by: Dan McGee <dan@archlinux.org>
Diffstat (limited to 'lib/libalpm/alpm_list.c')
-rw-r--r--lib/libalpm/alpm_list.c28
1 files changed, 23 insertions, 5 deletions
diff --git a/lib/libalpm/alpm_list.c b/lib/libalpm/alpm_list.c
index ae54e190..87567402 100644
--- a/lib/libalpm/alpm_list.c
+++ b/lib/libalpm/alpm_list.c
@@ -307,7 +307,7 @@ alpm_list_t SYMEXPORT *alpm_list_remove(alpm_list_t *haystack, const void *needl
continue;
}
tmp = i->next;
- if(fn(needle, i->data) == 0) {
+ if(fn(i->data, needle) == 0) {
/* we found a matching item */
if(i == haystack) {
/* Special case: removing the head node which has a back reference to
@@ -351,6 +351,22 @@ alpm_list_t SYMEXPORT *alpm_list_remove(alpm_list_t *haystack, const void *needl
}
/**
+ * @brief Remove a string from a list.
+ *
+ * @param haystack the list to remove the item from
+ * @param needle the data member of the item we're removing
+ * @param data output parameter containing data of the removed item
+ *
+ * @return the resultant list
+ */
+alpm_list_t SYMEXPORT *alpm_list_remove_str(alpm_list_t *haystack,
+ const char *needle, char **data)
+{
+ return(alpm_list_remove(haystack, (const void *)needle,
+ (alpm_list_fn_cmp)strcmp, (void **)data));
+}
+
+/**
* @brief Create a new list without any duplicates.
*
* This does NOT copy data members.
@@ -586,7 +602,7 @@ void SYMEXPORT *alpm_list_find(const alpm_list_t *haystack, const void *needle,
}
/* trivial helper function for alpm_list_find_ptr */
-static int ptrcmp(const void *p, const void *q)
+static int ptr_cmp(const void *p, const void *q)
{
return(p != q);
}
@@ -603,7 +619,7 @@ static int ptrcmp(const void *p, const void *q)
*/
void SYMEXPORT *alpm_list_find_ptr(const alpm_list_t *haystack, const void *needle)
{
- return(alpm_list_find(haystack, needle, ptrcmp));
+ return(alpm_list_find(haystack, needle, ptr_cmp));
}
/**
@@ -614,9 +630,11 @@ void SYMEXPORT *alpm_list_find_ptr(const alpm_list_t *haystack, const void *need
*
* @return `needle` if found, NULL otherwise
*/
-char SYMEXPORT *alpm_list_find_str(const alpm_list_t *haystack, const char *needle)
+char SYMEXPORT *alpm_list_find_str(const alpm_list_t *haystack,
+ const char *needle)
{
- return((char *)alpm_list_find(haystack, (const void*)needle, (alpm_list_fn_cmp)strcmp));
+ return((char *)alpm_list_find(haystack, (const void*)needle,
+ (alpm_list_fn_cmp)strcmp));
}
/**