From f43805d875ad5c672afbbfff48bded2087204773 Mon Sep 17 00:00:00 2001 From: Chantry Xavier Date: Sat, 10 May 2008 18:47:42 +0200 Subject: 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 Signed-off-by: Dan McGee --- lib/libalpm/alpm_list.c | 28 +++++++++++++++++++++++----- 1 file changed, 23 insertions(+), 5 deletions(-) (limited to 'lib/libalpm/alpm_list.c') 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 @@ -350,6 +350,22 @@ alpm_list_t SYMEXPORT *alpm_list_remove(alpm_list_t *haystack, const void *needl return(haystack); } +/** + * @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. * @@ -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)); } /** -- cgit v1.2.3-24-g4f1b