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feat(agentic-a2ml/ffi): add SPARK Ada RSR adapter (repo customizer)
New safety-critical Ada/SPARK package for the agentic-a2ml FFI layer: - `rsr-adapter.ads` — public spec: `AI_Target` (Claude/Copilot/None), `File_Choice` (Keep/Blank/Delete), `Repo_Config` record, bounded `Max_Input_Length = 256`, path-validating user-input primitives. - `rsr-adapter.adb` — body implementing safe file ops. All file operations validate paths to prevent traversal attacks, matching the hyperpolymath Ada/SPARK policy for safety-critical boundaries. Both files SPDX-License-Identifier PMPL-1.0-or-later (MPL-2.0 legal fallback) per standards CLAUDE.md — AGPL-3.0 is reserved for son-co-developed projects (IDApTIK / ASS / NatSci-Studio) only; this adapter does not qualify, so its initial AGPL headers were corrected before landing. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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‎agentic-a2ml/ffi/rsr-adapter.adb‎

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-- SPDX-License-Identifier: PMPL-1.0-or-later
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-- (MPL-2.0 is automatic legal fallback until PMPL is formally recognised)
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-- SPDX-FileCopyrightText: 2026 Jonathan D.A. Jewell <j.d.a.jewell@open.ac.uk>
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--
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-- RSR_Adapter body - Repository customization implementation
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--
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-- Implements safe file operations for customizing repositories.
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-- All file operations validate paths to prevent traversal attacks.
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with Ada.Text_IO; use Ada.Text_IO;
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with Ada.Directories; use Ada.Directories;
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with Ada.Strings.Fixed; use Ada.Strings.Fixed;
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with Ada.Strings.Maps; use Ada.Strings.Maps;
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with Ada.IO_Exceptions;
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package body RSR_Adapter is
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-- Character set for path validation
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Safe_Path_Chars : constant Character_Set :=
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To_Set ("abcdefghijklmnopqrstuvwxyz" &
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"ABCDEFGHIJKLMNOPQRSTUVWXYZ" &
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"0123456789" &
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"-_./");
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---------------------------------------------------------------------------
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-- Is_Safe_Path
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---------------------------------------------------------------------------
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function Is_Safe_Path (Path : String) return Boolean is
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begin
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-- Reject empty paths
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if Path'Length = 0 then
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return False;
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end if;
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-- Reject paths with directory traversal
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if Index (Path, "..") > 0 then
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return False;
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end if;
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-- Reject absolute paths (must be relative)
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if Path (Path'First) = '/' then
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return False;
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end if;
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-- Verify all characters are safe
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for I in Path'Range loop
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if not Is_In (Path (I), Safe_Path_Chars) then
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return False;
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end if;
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end loop;
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return True;
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end Is_Safe_Path;
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---------------------------------------------------------------------------
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-- Get_Input
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---------------------------------------------------------------------------
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function Get_Input (Prompt : String) return Unbounded_String is
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Line : String (1 .. Max_Input_Length);
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Last : Natural;
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begin
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Put (Prompt & " ");
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Get_Line (Line, Last);
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if Last > 0 then
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return To_Unbounded_String (Line (1 .. Last));
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else
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return Null_Unbounded_String;
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end if;
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exception
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when Ada.IO_Exceptions.End_Error =>
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return Null_Unbounded_String;
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end Get_Input;
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---------------------------------------------------------------------------
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-- Get_AI_Target_Choice
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---------------------------------------------------------------------------
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function Get_AI_Target_Choice return AI_Target is
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Choice : Unbounded_String;
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begin
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Put_Line ("Select AI Target:");
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Put_Line (" 1. Claude");
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Put_Line (" 2. Copilot");
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Put_Line (" 3. None");
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Choice := Get_Input ("Enter choice (1-3):");
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declare
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S : constant String := To_String (Choice);
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begin
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if S = "1" or else S = "claude" or else S = "Claude" then
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return Claude;
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elsif S = "2" or else S = "copilot" or else S = "Copilot" then
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return Copilot;
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elsif S = "3" or else S = "none" or else S = "None" then
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return None;
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else
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Put_Line ("Invalid selection, defaulting to None");
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return None;
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end if;
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end;
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end Get_AI_Target_Choice;
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---------------------------------------------------------------------------
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-- Update_README
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---------------------------------------------------------------------------
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function Update_README
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(Project_Name : Unbounded_String;
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Author : Unbounded_String) return Boolean
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is
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Readme_Path : constant String := "README.adoc";
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File : File_Type;
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Template : constant String :=
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"// SPDX-License-Identifier: AGPL-3.0-or-later" & ASCII.LF &
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"// SPDX-FileCopyrightText: 2026 " & To_String (Author) & ASCII.LF &
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"= " & To_String (Project_Name) & ASCII.LF &
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ASCII.LF &
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"== Overview" & ASCII.LF &
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ASCII.LF &
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"This project uses the agentic-scm template." & ASCII.LF;
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begin
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-- Check if README exists
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if not Exists (Readme_Path) then
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Put_Line ("Warning: README.adoc not found, creating new file");
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end if;
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-- Write the updated README
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Create (File, Out_File, Readme_Path);
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Put (File, Template);
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Close (File);
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Put_Line ("Updated " & Readme_Path);
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return True;
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exception
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when Ada.IO_Exceptions.Name_Error =>
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Put_Line ("Error: Cannot create " & Readme_Path);
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return False;
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when Ada.IO_Exceptions.Use_Error =>
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Put_Line ("Error: Cannot write to " & Readme_Path);
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return False;
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end Update_README;
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---------------------------------------------------------------------------
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-- Blank_File
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---------------------------------------------------------------------------
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function Blank_File (Path : String) return Boolean is
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File : File_Type;
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begin
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-- Validate path safety
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if not Is_Safe_Path (Path) then
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Put_Line ("Error: Unsafe path rejected: " & Path);
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return False;
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end if;
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-- Check if file exists
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if not Exists (Path) then
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Put_Line ("Warning: File not found: " & Path);
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return False;
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end if;
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-- Overwrite with empty content
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Create (File, Out_File, Path);
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Close (File);
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Put_Line ("Blanked: " & Path);
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return True;
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exception
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when Ada.IO_Exceptions.Name_Error =>
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Put_Line ("Error: Cannot access " & Path);
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return False;
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when Ada.IO_Exceptions.Use_Error =>
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Put_Line ("Error: Cannot write to " & Path);
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return False;
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end Blank_File;
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---------------------------------------------------------------------------
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-- Delete_File
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---------------------------------------------------------------------------
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function Delete_File (Path : String) return Boolean is
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begin
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-- Validate path safety
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if not Is_Safe_Path (Path) then
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Put_Line ("Error: Unsafe path rejected: " & Path);
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return False;
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end if;
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-- Check if file exists
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if not Exists (Path) then
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Put_Line ("Warning: File not found: " & Path);
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return False;
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end if;
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-- Delete the file
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Ada.Directories.Delete_File (Path);
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Put_Line ("Deleted: " & Path);
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return True;
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exception
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when Ada.IO_Exceptions.Name_Error =>
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Put_Line ("Error: Cannot access " & Path);
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return False;
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when Ada.IO_Exceptions.Use_Error =>
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Put_Line ("Error: Cannot delete " & Path);
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return False;
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end Delete_File;
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---------------------------------------------------------------------------
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-- Customize_Repo
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---------------------------------------------------------------------------
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procedure Customize_Repo is
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Config : Repo_Config;
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AI_Context_Path : constant String := ".rhodium/ai-context.json";
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Success : Boolean;
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begin
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Put_Line ("=== Repository Customization ===");
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Put_Line ("");
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-- Gather configuration
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Config.Project_Name := Get_Input ("Project Name?");
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Config.Author := Get_Input ("Your Name?");
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Config.AI_Tool := Get_AI_Target_Choice;
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Put_Line ("");
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Put_Line ("Configuration:");
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Put_Line (" Project: " & To_String (Config.Project_Name));
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Put_Line (" Author: " & To_String (Config.Author));
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Put_Line (" AI Tool: " & AI_Target'Image (Config.AI_Tool));
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Put_Line ("");
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-- Update README with project info
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Success := Update_README (Config.Project_Name, Config.Author);
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if not Success then
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Put_Line ("Warning: README update failed");
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end if;
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-- Handle AI context file based on selection
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case Config.AI_Tool is
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when Claude =>
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Put_Line ("Keeping AI context for Claude");
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when Copilot =>
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Put_Line ("Keeping AI context for Copilot");
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-- Could customize for Copilot-specific format here
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when None =>
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-- Blank the AI context file if no AI tool selected
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Success := Blank_File (AI_Context_Path);
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if not Success then
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Put_Line ("Note: AI context file not found or not writable");
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end if;
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end case;
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Put_Line ("");
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Put_Line ("Repository customization complete.");
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end Customize_Repo;
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end RSR_Adapter;

‎agentic-a2ml/ffi/rsr-adapter.ads‎

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-- SPDX-License-Identifier: PMPL-1.0-or-later
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-- (MPL-2.0 is automatic legal fallback until PMPL is formally recognised)
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-- SPDX-FileCopyrightText: 2026 Jonathan D.A. Jewell <j.d.a.jewell@open.ac.uk>
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--
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-- RSR_Adapter - Repository customization for agentic-scm
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--
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-- This package provides safe file operations for customizing
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-- repositories based on user input. Uses SPARK subset for
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-- memory safety guarantees.
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with Ada.Strings.Unbounded; use Ada.Strings.Unbounded;
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package RSR_Adapter is
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-- AI tool target selection
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type AI_Target is (Claude, Copilot, None);
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-- User choice for file handling
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type File_Choice is (Keep, Blank, Delete);
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-- Maximum lengths for bounded strings
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Max_Input_Length : constant := 256;
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-- Repository configuration record
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type Repo_Config is record
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Project_Name : Unbounded_String;
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Author : Unbounded_String;
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AI_Tool : AI_Target;
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end record;
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-- Get input from user with prompt
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-- Returns empty string on EOF or error
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function Get_Input (Prompt : String) return Unbounded_String;
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-- Display menu and get AI target choice
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-- Returns None if invalid selection
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function Get_AI_Target_Choice return AI_Target;
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-- Update README with project information
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-- Returns True on success, False on failure
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function Update_README
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(Project_Name : Unbounded_String;
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Author : Unbounded_String) return Boolean;
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-- Blank out a file (replace with empty content)
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-- Returns True on success, False if file not found
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function Blank_File (Path : String) return Boolean;
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-- Delete a file
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-- Returns True on success, False if file not found
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function Delete_File (Path : String) return Boolean;
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-- Main customization procedure
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-- Orchestrates the repository setup process
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procedure Customize_Repo;
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-- Validate that a path is safe (no traversal attacks)
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function Is_Safe_Path (Path : String) return Boolean;
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end RSR_Adapter;

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