GaBuZoMeu/Registry/Utils/SQLite.hs

62 lines
3.1 KiB
Haskell

module Registry.Utils.SQLite where
import Registry.Grammar
import Registry.Types
escape :: String -> String
escape = concatMap fixChar
where
fixChar '\'' = "''"
fixChar c = [c]
maybeToSQLite Nothing = "NULL"
maybeToSQLite (Just s) = "'" ++ s ++ "'"
-- TODO: use "SELECT last_insert_rowid();" is probably cleaner than
-- "SELECT max(oid)"
onedescrToSQLite "language" i s = "INSERT INTO Descriptions (description) " ++
" VALUES ('" ++ (escape s) ++ "');\n" ++
"INSERT INTO Descriptions_languages (description, lang) " ++
" SELECT max(oid), '" ++ i ++ "' FROM Descriptions;\n"
onedescrToSQLite "script" i s = "INSERT INTO Descriptions (description) " ++
" VALUES ('" ++ (escape s) ++ "');\n" ++
"INSERT INTO Descriptions_scripts (description, script) " ++
" SELECT max(oid), '" ++ i ++ "' FROM Descriptions;\n"
onedescrToSQLite "region" i s = "INSERT INTO Descriptions (description) " ++
" VALUES ('" ++ (escape s) ++ "');\n" ++
"INSERT INTO Descriptions_regions (description, region) " ++
" SELECT max(oid), '" ++ i ++ "' FROM Descriptions;\n"
onedescrToSQLite "variant" i s = "INSERT INTO Descriptions (description) " ++
" VALUES ('" ++ (escape s) ++ "');\n" ++
"INSERT INTO Descriptions_variants (description, variant) " ++
" SELECT max(oid), '" ++ i ++ "' FROM Descriptions;\n"
descrToSQLite recordtype a i = concat (map (onedescrToSQLite recordtype i) a)
toSQLite (Lang l) = "INSERT INTO Languages (code, suppressscript, " ++
"preferredvalue, added) " ++
"VALUES (" ++
"'" ++ (lang'subtag l) ++ "', " ++
(maybeToSQLite (lang'script l)) ++ ", " ++
(maybeToSQLite (lang'preferredValue l)) ++ ", " ++
"'" ++ (lang'added l) ++ "');\n" ++
(descrToSQLite "language" (lang'descr l) (lang'subtag l))
toSQLite (Scr s) = "INSERT INTO Scripts (code, added) " ++
"VALUES (" ++
"'" ++ (script'subtag s) ++ "', " ++
"'" ++ (script'added s) ++ "');\n" ++
(descrToSQLite "script" (script'descr s) (script'subtag s))
toSQLite (Reg r) = "INSERT INTO Regions (code, added) " ++
"VALUES (" ++
"'" ++ (region'subtag r) ++ "', " ++
"'" ++ (region'added r) ++ "');\n" ++
(descrToSQLite "region" (region'descr r) (region'subtag r))
toSQLite (Var v) = "INSERT INTO Variants (code, added) " ++
"VALUES (" ++
"'" ++ (variant'subtag v) ++ "', " ++
"'" ++ (variant'added v) ++ "');\n" ++
(descrToSQLite "variant" (variant'descr v) (variant'subtag v))