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257 | with Ada.Wide_Wide_Text_IO;
with Ada.Directories;
with AAA.Strings;
with AAA.Directories;
with CLIC.Config.Load;
with Simple_Logging;
with TOML;
package body CLIC.Config.Edit is
package Trace renames Simple_Logging;
use TOML;
procedure Write_Config_File (Table : TOML_Value; Path : String)
with Pre => Table.Kind = TOML_Table;
function Remove_From_Table (Table : TOML_Value;
Key : Config_Key;
Quiet : Boolean := False)
return Boolean
with Pre => Table.Kind = TOML_Table;
-- When Quiet, don't print error messages when returning False
function Add_In_Table (Table : TOML_Value;
Key : Config_Key;
Val : TOML_Value)
return Boolean
with Pre => Table.Kind = TOML_Table;
-----------------------
-- Write_Config_File --
-----------------------
procedure Write_Config_File (Table : TOML_Value; Path : String) is
use Ada.Wide_Wide_Text_IO;
use Ada.Directories;
File : File_Type;
begin
-- Create the directory for the config file, in case it doesn't exists
Create_Path (Containing_Directory (Path));
Create (File, Out_File, Path);
Trace.Debug ("Write config: '" & TOML.Dump_As_String (Table) & "'");
Put (File, WW (TOML.Dump_As_String (Table)));
Close (File);
end Write_Config_File;
-----------------------
-- Remove_From_Table --
-----------------------
function Remove_From_Table (Table : TOML_Value;
Key : Config_Key;
Quiet : Boolean := False)
return Boolean
is
use AAA.Strings;
Id : constant String := Split (Key, '.', Raises => False);
Leaf : constant Boolean := Id = Key;
begin
if not Table.Has (Id) then
-- The key doesn't exist
if not Quiet then
Trace.Error ("Configuration key not defined");
end if;
return False;
end if;
if Leaf then
Table.Unset (Id);
return True;
else
declare
Sub : constant TOML_Value := Table.Get (Id);
begin
if Sub.Kind = TOML_Table then
return Remove_From_Table (Sub, Split (Key, '.', Tail));
else
if not Quiet then
Trace.Error ("Configuration key not defined");
end if;
return False;
end if;
end;
end if;
end Remove_From_Table;
------------------
-- Add_In_Table --
------------------
function Add_In_Table (Table : TOML_Value;
Key : Config_Key;
Val : TOML_Value)
return Boolean
is
use AAA.Strings;
Id : constant String := Split (Key, '.', Raises => False);
Leaf : constant Boolean := Id = Key;
begin
if Leaf then
Table.Set (Id, Val);
return True;
end if;
if not Table.Has (Id) then
-- The subkey doesn't exist, create a table for it
Table.Set (Id, Create_Table);
end if;
declare
Sub : constant TOML_Value := Table.Get (Id);
begin
if Sub.Kind = TOML_Table then
return Add_In_Table (Sub, Split (Key, '.', Tail), Val);
else
Trace.Error ("Configuration key already defined");
return False;
end if;
end;
end Add_In_Table;
-----------
-- Unset --
-----------
function Unset (Path : String;
Key : Config_Key;
Quiet : Boolean := False)
return Boolean
is
use AAA.Directories;
Tmp : Replacer := New_Replacement (File => Path,
Backup => False,
Allow_No_Original => True);
Table : constant TOML_Value := Load.Load_TOML_File (Tmp.Editable_Name);
begin
if Table.Is_Null then
-- The configuration file doesn't exist or is not valid
if not Quiet then
Trace.Error ("configuration file doesn't exist or is not valid");
end if;
return False;
end if;
if not Remove_From_Table (Table, Key, Quiet) then
return False;
end if;
Write_Config_File (Table, Tmp.Editable_Name);
Tmp.Replace;
return True;
end Unset;
---------
-- Set --
---------
function Set (Path : String;
Key : Config_Key;
Value : String;
Check : Check_Import := null)
return Boolean
is
use AAA.Directories;
Tmp : Replacer := New_Replacement (File => Path,
Backup => False,
Allow_No_Original => True);
Table : TOML_Value := Load.Load_TOML_File (Tmp.Editable_Name);
To_Add : constant TOML_Value := To_TOML_Value (Value);
begin
if To_Add.Is_Null then
Trace.Error ("Invalid configuration value: '" & Value & "'");
return False;
end if;
if Check /= null and then not Check (Key, To_Add) then
return False;
end if;
if Table.Is_Null then
-- The configuration file doesn't exist or is not valid. Create an
-- empty table.
Table := TOML.Create_Table;
end if;
if not Add_In_Table (Table, Key, To_Add) then
return False;
end if;
Write_Config_File (Table, Tmp.Editable_Name);
Tmp.Replace;
return True;
end Set;
---------------
-- Set_Typed --
---------------
function Set_Typed (Path : String;
Key : Config_Key;
Value : Value_Type;
Check : Check_Import := null)
return Boolean
is
------------------
-- Check_Proper --
------------------
-- Check that the type to be stored is actually the one intended, in
-- addition to the user check
function Check_Proper (Key : Config_Key; Value : TOML.TOML_Value)
return Boolean
is ((Check = null or else Check (Key, Value))
and then Value.Kind = TOML_Type);
-----------------
-- Set_Boolean --
-----------------
function Set_Boolean return Boolean is
begin
return Set (Path, Key,
(case Boolean'Value (Image (Value)) is
when True => "true",
when False => "false"),
Check_Proper'Unrestricted_Access);
end Set_Boolean;
begin
if TOML_Type = TOML_Boolean then
-- Boolean is special because we need to pass exactly "true/false"
return Set_Boolean;
else
return Set (Path, Key, Image (Value),
Check_Proper'Unrestricted_Access);
end if;
end Set_Typed;
end CLIC.Config.Edit;
|