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authorNatanael Copa <ncopa@alpinelinux.org>2011-02-19 09:41:15 +0000
committerNatanael Copa <ncopa@alpinelinux.org>2011-09-15 17:13:08 +0000
commit9e60a72b92c34d0bd6ce3791da68a37cccfe999b (patch)
tree60a1d89f405fa951a62ad72a550e149cea5090bc /src
parentc79302d9732087dd13e8b1a9a4edb9ed13e78ce7 (diff)
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lua: implement exists/is_installed
Tests whether given package string is installed
Diffstat (limited to 'src')
-rw-r--r--src/lua-apk.c33
1 files changed, 33 insertions, 0 deletions
diff --git a/src/lua-apk.c b/src/lua-apk.c
index 31987a6..8bd9a7b 100644
--- a/src/lua-apk.c
+++ b/src/lua-apk.c
@@ -196,12 +196,45 @@ static int Papk_who_owns(lua_State *L)
return push_package(L, pkg);
}
+static int Papk_exists(lua_State *L)
+{
+ struct apk_database *db = checkdb(L, 1);
+ const char *depstr = luaL_checkstring(L, 2);
+ struct apk_dependency dep;
+ struct apk_name *name;
+ struct apk_package *pkg;
+ int i, r;
+
+ r = apk_dep_from_blob(&dep, db, APK_BLOB_STR(depstr));
+ if (r != 0)
+ goto ret_nil;
+
+ name = dep.name;
+ for (i = 0; i < name->pkgs->num; i++) {
+ pkg = name->pkgs->item[i];
+ if (pkg->ipkg != NULL)
+ break;
+ }
+ if (i >= name->pkgs->num)
+ goto ret_nil;
+
+ if (!apk_dep_is_satisfied(&dep, pkg))
+ goto ret_nil;
+
+ return push_package(L, pkg);
+ret_nil:
+ lua_pushnil(L);
+ return 1;
+}
+
static const luaL_reg reg_apk_methods[] = {
{"version_validate", Pversion_validate},
{"version_compare", Pversion_compare},
{"version_is_less", Pversion_is_less},
{"db_open", Papk_db_open},
{"who_owns", Papk_who_owns},
+ {"exists", Papk_exists},
+ {"is_installed", Papk_exists},
{NULL, NULL}
};