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lua: implement exists/is_installed 

Tests whether given package string is installed
cute-signatures
Natanael Copa 2011-02-19 09:41:15 +00:00
parent c79302d973
commit 9e60a72b92
1 changed files with 33 additions and 0 deletions
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33
src/lua-apk.c
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@ -196,12 +196,45 @@ static int Papk_who_owns(lua_State *L)
return push_package(L, pkg); 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[] = { static const luaL_reg reg_apk_methods[] = {
{"version_validate", Pversion_validate}, {"version_validate", Pversion_validate},
{"version_compare", Pversion_compare}, {"version_compare", Pversion_compare},
{"version_is_less", Pversion_is_less}, {"version_is_less", Pversion_is_less},
{"db_open", Papk_db_open}, {"db_open", Papk_db_open},
{"who_owns", Papk_who_owns}, {"who_owns", Papk_who_owns},
{"exists", Papk_exists},
{"is_installed", Papk_exists},
{NULL, NULL} {NULL, NULL}
}; };