Sha256: d0e5189c43f218bd3a4101807fdb4d78e3119d928257fa508829552e641f83ed
Contents?: true
Size: 1.95 KB
Versions: 6
Compression:
Stored size: 1.95 KB
Contents
wax.cache = {}
setmetatable(wax.cache, wax.cache)
-- Returns contents of cache keys
-- key: string # value for cache
-- maxAge: number (optional) # max age of file in seconds
function wax.cache.get(key, maxAge)
local path = wax.cache.pathFor(key)
if not wax.filesystem.isFile(path) then return nil end
if maxAge then
local fileAge = os.time() - wax.filesystem.attributes(path).modifiedAt
if fileAge > maxAge then
return nil
end
end
local success, result = pcall(function()
return NSKeyedUnarchiver:unarchiveObjectWithFile(path)
end)
if not success then -- Bad cache
puts("Error: Couldn't read cache with key %s", key)
wax.cache.clear(key)
return nil
else
return result
end
end
-- Creates a cache for the key with contents
-- key: string # value for the cache
-- contents: object # whatever is NSKeyedArchive compatible
function wax.cache.set(key, contents)
local path = wax.cache.pathFor(key)
if not contents then -- delete the value from the cache
wax.cache.clear(key)
else
local success = NSKeyedArchiver:archiveRootObject_toFile(contents, path)
if not success then puts("Couldn't archive cache '%s' to '%s'", key, path) end
end
end
function wax.cache.age(key)
local path = wax.cache.pathFor(key)
-- If there is no file, just send them back a really big age. Cleaner than
-- dealing with nils
if not wax.filesystem.isFile(path) then return wax.time.days(1000) end
local fileAge = os.time() - wax.filesystem.attributes(path).modifiedAt
return fileAge
end
-- Removes specific keys from cache
function wax.cache.clear(...)
for i, key in ipairs({...}) do
local path = wax.cache.pathFor(key)
wax.filesystem.delete(path)
end
end
-- Removes entire cache dir
function wax.cache.clearAll()
wax.filesystem.delete(NSCacheDirectory)
wax.filesystem.createDir(NSCacheDirectory)
end
function wax.cache.pathFor(key)
return NSCacheDirectory .. "/" .. wax.base64.encode(key)
end
Version data entries
6 entries across 6 versions & 1 rubygems