/usr/share/ada/adainclude/gnatcoll/gnatcoll-scripts-shell.adb is in libgnatcoll16.1.0-dev 17.0.2017-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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-- G N A T C O L L --
-- --
-- Copyright (C) 2003-2017, AdaCore --
-- --
-- This library is free software; you can redistribute it and/or modify it --
-- under terms of the GNU General Public License as published by the Free --
-- Software Foundation; either version 3, or (at your option) any later --
-- version. This library is distributed in the hope that it will be useful, --
-- but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHAN- --
-- TABILITY or FITNESS FOR A PARTICULAR PURPOSE. --
-- --
-- --
-- --
-- --
-- --
-- You should have received a copy of the GNU General Public License and --
-- a copy of the GCC Runtime Library Exception along with this program; --
-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
-- <http://www.gnu.org/licenses/>. --
-- --
------------------------------------------------------------------------------
with Ada.Characters.Handling; use Ada.Characters.Handling;
with Ada.Containers.Indefinite_Vectors;
with Ada.Exceptions; use Ada.Exceptions;
with Ada.IO_Exceptions; use Ada.IO_Exceptions;
with Ada.Strings.Fixed; use Ada.Strings.Fixed;
with Ada.Strings.Unbounded; use Ada.Strings.Unbounded;
with Ada.Unchecked_Deallocation;
with System.Address_Image;
with System; use System;
with GNAT.Debug_Utilities; use GNAT.Debug_Utilities;
with GNATCOLL.Mmap; use GNATCOLL.Mmap;
with GNAT.OS_Lib; use GNAT.OS_Lib;
with GNATCOLL.Scripts; use GNATCOLL.Scripts;
with GNATCOLL.Scripts.Impl; use GNATCOLL.Scripts.Impl;
with GNATCOLL.Traces; use GNATCOLL.Traces;
with GNATCOLL.Utils; use GNATCOLL.Utils;
package body GNATCOLL.Scripts.Shell is
Me : constant Trace_Handle := Create ("SHELL_SCRIPT", Off);
Me_Log : constant Trace_Handle := Create ("SCRIPTS.LOG", Off);
Cst_Prefix : constant String := "@cst@";
-- Prefix used to store the name of constants in class instances
use Instances_List, Command_Hash;
procedure Free_Internal_Data (Script : access Shell_Scripting_Record'Class);
-- Free the internal memory used to store the results of previous commands
-- and class instances.
----------
-- Misc --
----------
function Name_From_Instance
(Instance : access Class_Instance_Record'Class) return String;
-- Return the string to display to report the instance in the shell
function Instance_From_Name
(Script : access Shell_Scripting_Record'Class;
Name : String) return Class_Instance;
-- Opposite of Name_From_Instance
function Instance_From_Address
(Script : access Shell_Scripting_Record'Class;
Add : System.Address) return Class_Instance;
-- Return an instance from its address
function Execute_GPS_Shell_Command
(Script : access Shell_Scripting_Record'Class;
Command : String;
Errors : access Boolean) return String;
-- Execute a command in the GPS shell and returns its result.
-- Command might be a series of commands, separated by semicolons or
-- newlines. The return value is the result of the last command.
-- If Errors is set to True on exit, then the return value is an error msg
function Execute_GPS_Shell_Command
(Script : access Shell_Scripting_Record'Class;
CL : Arg_List;
Errors : access Boolean) return String;
-- Execute a command in the GPS shell and returns its result.
-- Command must be a single command (no semicolon-separated list).
procedure Module_Command_Handler
(Data : in out Callback_Data'Class;
Command : String);
-- Handles functions specific to the shell language
------------------------
-- Internals Nth_Arg --
------------------------
function Nth_Arg
(Data : Shell_Callback_Data;
N : Positive;
Success : access Boolean) return String;
function Nth_Arg
(Data : Shell_Callback_Data;
N : Positive;
Success : access Boolean) return Unbounded_String;
function Nth_Arg
(Data : Shell_Callback_Data;
N : Positive;
Success : access Boolean) return Subprogram_Type;
function Nth_Arg
(Data : Shell_Callback_Data; N : Positive; Class : Class_Type;
Allow_Null : Boolean; Success : access Boolean) return Class_Instance;
-- These functions are called by the overridden Nth_Arg functions. They try
-- to return the parameter at the location N. If no parameter is found,
-- Success is false, true otherwise. It's the responsibility of the
-- enclosing Nth_Arg to either raise a No_Such_Parameter exception or to
-- return a default value.
--------------------
-- Block_Commands --
--------------------
procedure Block_Commands
(Script : access Shell_Scripting_Record; Block : Boolean) is
begin
Script.Blocked := Block;
end Block_Commands;
------------------------
-- Name_From_Instance --
------------------------
function Name_From_Instance
(Instance : access Class_Instance_Record'Class) return String is
begin
return '<' & Get_Name (Shell_Class_Instance (Instance).Class)
& "_0x" & System.Address_Image (Instance.all'Address)
& '>';
end Name_From_Instance;
------------------------
-- Instance_From_Name --
------------------------
function Instance_From_Name
(Script : access Shell_Scripting_Record'Class;
Name : String) return Class_Instance
is
Index : Natural := Name'First;
begin
if Name = "null" then
return No_Class_Instance;
end if;
while Index <= Name'Last - 3
and then Name (Index .. Index + 2) /= "_0x"
loop
Index := Index + 1;
end loop;
return Instance_From_Address
(Script, Value ("16#" & Name (Index + 3 .. Name'Last - 1) & "#"));
exception
when others =>
-- Invalid instance
return No_Class_Instance;
end Instance_From_Name;
---------------------------
-- Instance_From_Address --
---------------------------
function Instance_From_Address
(Script : access Shell_Scripting_Record'Class;
Add : System.Address) return Class_Instance
is
L : Instances_List.Cursor := First (Script.Instances);
begin
while Has_Element (L) loop
if Get_CIR (Element (L)).all'Address = Add then
return Element (L);
end if;
Next (L);
end loop;
return No_Class_Instance;
end Instance_From_Address;
-----------------
-- Is_Subclass --
-----------------
function Is_Subclass
(Instance : access Shell_Class_Instance_Record;
Base : String) return Boolean
is
pragma Unreferenced (Instance, Base);
begin
-- ??? Not checked
return True;
end Is_Subclass;
------------------
-- Set_Property --
------------------
overriding procedure Set_Property
(Instance : access Shell_Class_Instance_Record;
Name : String; Value : Integer) is
begin
-- We can only retrieve string constants later on, so convert here
Set_Data
(Instance, Cst_Prefix & Name, Create_Property (Image (Value, 0)));
end Set_Property;
overriding procedure Set_Property
(Instance : access Shell_Class_Instance_Record;
Name : String; Value : Float) is
begin
-- We can only retrieve string constants later on, so convert here
Set_Data
(Instance, Cst_Prefix & Name, Create_Property (Float'Image (Value)));
end Set_Property;
overriding procedure Set_Property
(Instance : access Shell_Class_Instance_Record;
Name : String; Value : Boolean) is
begin
Set_Data
(Instance, Cst_Prefix & Name, Create_Property (Boolean'Image (Value)));
end Set_Property;
overriding procedure Set_Property
(Instance : access Shell_Class_Instance_Record;
Name : String; Value : String) is
begin
Set_Data (Instance, Cst_Prefix & Name, Create_Property (Value));
end Set_Property;
---------------------
-- Name_Parameters --
---------------------
procedure Name_Parameters
(Data : in out Shell_Callback_Data; Names : Cst_Argument_List)
is
pragma Unreferenced (Data, Names);
begin
null;
end Name_Parameters;
----------------------------
-- Module_Command_Handler --
----------------------------
procedure Module_Command_Handler
(Data : in out Callback_Data'Class;
Command : String)
is
begin
if Command = "load" then
declare
Filename : constant String := Nth_Arg (Data, 1);
File : Mapped_File;
Errors : aliased Boolean;
begin
File := Open_Read (Filename);
Read (File);
declare
Ignored : constant String :=
Execute_GPS_Shell_Command
(Shell_Scripting (Get_Script (Data)),
String (GNATCOLL.Mmap.Data (File)(1 .. Last (File))),
Errors'Access);
pragma Unreferenced (Ignored);
begin
null;
end;
exception
when Name_Error =>
Set_Error_Msg
(Data, "File not found: """ & Filename & '"');
end;
elsif Command = "echo" or else Command = "echo_error" then
declare
Result : Unbounded_String;
begin
for A in 1 .. Number_Of_Arguments (Data) loop
Append (Result, String'(Nth_Arg (Data, A)));
if A /= Number_Of_Arguments (Data) then
Append (Result, ' ');
end if;
end loop;
if Command = "echo" then
Insert_Text
(Get_Script (Data),
Txt => To_String (Result) & ASCII.LF);
else
Insert_Error
(Get_Script (Data),
Txt => To_String (Result) & ASCII.LF);
end if;
end;
elsif Command = "clear_cache" then
Free_Internal_Data (Shell_Scripting (Get_Script (Data)));
end if;
end Module_Command_Handler;
----------------
-- Initialize --
----------------
procedure Initialize
(Data : in out Shell_Callback_Data'Class;
Script : access Shell_Scripting_Record'Class) is
begin
Data.Script := Shell_Scripting (Script);
Data.Return_Value := null;
Data.Return_Dict := null;
Data.Return_As_List := False;
Data.Return_As_Error := False;
end Initialize;
------------------------------
-- Register_Shell_Scripting --
------------------------------
procedure Register_Shell_Scripting
(Repo : Scripts_Repository;
Script : Shell_Scripting := null)
is
S : Shell_Scripting;
begin
if Script /= null then
S := Script;
else
S := new Shell_Scripting_Record;
end if;
S.Repo := Repo;
Register_Scripting_Language (Repo, S);
Register_Command
(Repo, "load",
Minimum_Args => 1,
Maximum_Args => 1,
Handler => Module_Command_Handler'Access,
Language => Shell_Name);
Register_Command
(Repo, "echo",
Minimum_Args => 0,
Maximum_Args => Natural'Last,
Handler => Module_Command_Handler'Access,
Language => Shell_Name);
Register_Command
(Repo, "echo_error",
Minimum_Args => 0,
Maximum_Args => Natural'Last,
Handler => Module_Command_Handler'Access,
Language => Shell_Name);
Register_Command
(Repo, "clear_cache",
Handler => Module_Command_Handler'Access,
Language => Shell_Name);
end Register_Shell_Scripting;
-------------------
-- List_Commands --
-------------------
procedure List_Commands
(Script : access Shell_Scripting_Record'Class;
Console : Virtual_Console := null)
is
package Command_List is
new Ada.Containers.Indefinite_Vectors (Positive, String);
package Ascending is new Command_List.Generic_Sorting ("<");
V : Command_List.Vector;
begin
-- Put all commands into V
declare
C : Command_Hash.Cursor := Script.Commands_List.First;
begin
while Has_Element (C) loop
V.Append (Element (C).Command.all);
Next (C);
end loop;
end;
-- Sort commands
Ascending.Sort (V);
-- Output them
declare
C : Command_List.Cursor := V.First;
begin
while Command_List.Has_Element (C) loop
Insert_Text
(Script, Console, Command_List.Element (C) & ASCII.LF);
Command_List.Next (C);
end loop;
end;
end List_Commands;
-----------------------
-- Register_Property --
-----------------------
overriding procedure Register_Property
(Script : access Shell_Scripting_Record;
Prop : Property_Descr_Access)
is
pragma Unreferenced (Script, Prop);
begin
-- All the work is done in Execute_Command
null;
end Register_Property;
----------------------
-- Register_Command --
----------------------
overriding procedure Register_Command
(Script : access Shell_Scripting_Record;
Command : Command_Descr_Access)
is
Cmd : GNAT.Strings.String_Access;
Info_C : Command_Hash.Cursor;
Info : Command_Information_Access;
begin
if Command.Command = "" then
return;
end if;
if Command.Class /= No_Class then
if Command.Command = Constructor_Method then
Cmd := new String'(Get_Name (Command.Class));
elsif Command.Command = Destructor_Method then
Cmd := new String'(Get_Name (Command.Class) & ".__delete");
else
Cmd := new String'
(Get_Name (Command.Class) & "." & Command.Command);
-- First parameter is always the instance
end if;
else
Cmd := new String'(Command.Command);
end if;
Info_C := Find (Script.Commands_List, Cmd.all);
-- Check that the command is not already registered
if Has_Element (Info_C) then
raise Program_Error with "Command already registered " & Cmd.all;
else
Info := new Command_Information'
(Command => Cmd,
Cmd => Command);
Include (Script.Commands_List, Cmd.all, Info);
end if;
end Register_Command;
--------------------
-- Register_Class --
--------------------
overriding procedure Register_Class
(Script : access Shell_Scripting_Record;
Name : String;
Base : Class_Type := No_Class;
Module : Module_Type := Default_Module)
is
pragma Unreferenced (Script, Name, Base, Module);
begin
-- Classes not supported in the shell module
null;
end Register_Class;
--------------------
-- Display_Prompt --
--------------------
overriding procedure Display_Prompt
(Script : access Shell_Scripting_Record;
Console : Virtual_Console := null) is
begin
Insert_Prompt (Script, Console, Script.Prompt.all);
end Display_Prompt;
----------------
-- Get_Prompt --
----------------
overriding function Get_Prompt
(Script : access Shell_Scripting_Record) return String is
begin
return Script.Prompt.all;
end Get_Prompt;
--------------
-- Complete --
--------------
procedure Complete
(Script : access Shell_Scripting_Record;
Input : String;
Completions : out String_Lists.List)
is
Current : Command_Hash.Cursor;
Info : Command_Information_Access;
begin
Completions := String_Lists.Empty_List;
Current := First (Script.Commands_List);
while Has_Element (Current) loop
Info := Element (Current);
declare
S : constant String := Info.Command.all;
begin
if S'Length >= Input'Length
and then S (S'First .. S'First + Input'Length - 1) = Input
then
String_Lists.Append (Completions, S);
end if;
end;
Next (Current);
end loop;
String_Lists_Sort.Sort (Completions);
end Complete;
---------------------
-- Execute_Command --
---------------------
procedure Execute_Command
(Script : access Shell_Scripting_Record;
CL : Arg_List;
Console : Virtual_Console := null;
Hide_Output : Boolean := False;
Show_Command : Boolean := True;
Errors : out Boolean)
is
pragma Unreferenced (Show_Command);
Old_Console : constant Virtual_Console := Script.Console;
Err : aliased Boolean;
begin
if Console /= null then
Script.Console := Console;
end if;
declare
S : constant String :=
Execute_GPS_Shell_Command
(Script, CL, Err'Unchecked_Access);
begin
Errors := Err;
if S /= "" then
Insert_Text (Script, Console, S & ASCII.LF);
end if;
Script.Console := Old_Console;
-- Do not display the prompt in the shell console if we did not
-- output to it
if not Hide_Output
and then (Console = null or else Console = Old_Console)
then
Display_Prompt (Script, Script.Console);
end if;
end;
end Execute_Command;
-------------------------------
-- Execute_Command_With_Args --
-------------------------------
function Execute_Command_With_Args
(Script : access Shell_Scripting_Record;
CL : Arg_List) return String
is
Errors : aliased Boolean;
begin
return Execute_GPS_Shell_Command
(Script, CL, Errors'Unchecked_Access);
end Execute_Command_With_Args;
------------------
-- Execute_File --
------------------
procedure Execute_File
(Script : access Shell_Scripting_Record;
Filename : String;
Console : Virtual_Console := null;
Hide_Output : Boolean := False;
Show_Command : Boolean := True;
Errors : out Boolean)
is
Old_Console : constant Virtual_Console := Script.Console;
Err : aliased Boolean;
CL : Arg_List;
begin
if Console /= null then
Script.Console := Console;
end if;
CL := Create ("load");
Append_Argument (CL, Filename, One_Arg);
if Show_Command then
Insert_Text (Script, Console, To_Display_String (CL));
end if;
declare
S : constant String := Execute_GPS_Shell_Command
(Script, CL, Err'Unchecked_Access);
begin
Errors := Err;
if S /= "" and then not Hide_Output then
Insert_Text (Script, Console, S & ASCII.LF);
end if;
Script.Console := Old_Console;
if not Hide_Output then
Display_Prompt (Script, Script.Console);
end if;
end;
end Execute_File;
--------------
-- Get_Name --
--------------
function Get_Name (Script : access Shell_Scripting_Record) return String is
pragma Unreferenced (Script);
begin
return Shell_Name;
end Get_Name;
----------
-- Free --
----------
procedure Free (Com : in out Command_Information_Access) is
procedure Unchecked_Free is new Ada.Unchecked_Deallocation
(Command_Information, Command_Information_Access);
begin
Free (Com.Command);
Unchecked_Free (Com);
end Free;
------------------------
-- Free_Internal_Data --
------------------------
procedure Free_Internal_Data
(Script : access Shell_Scripting_Record'Class) is
begin
for R in Script.Returns'Range loop
Free (Script.Returns (R));
end loop;
Script.Instances.Clear;
end Free_Internal_Data;
-------------
-- Destroy --
-------------
procedure Destroy (Script : access Shell_Scripting_Record) is
C : Command_Hash.Cursor;
Com : Command_Information_Access;
begin
Free_Internal_Data (Script);
Free (Script.Prompt);
Free (Script.Returns);
C := First (Script.Commands_List);
while Has_Element (C) loop
Com := Element (C);
Free (Com);
Next (C);
end loop;
Script.Finalized := True;
end Destroy;
----------------
-- Set_Prompt --
----------------
procedure Set_Prompt
(Script : access Shell_Scripting_Record'Class;
Prompt : String) is
begin
Free (Script.Prompt);
Script.Prompt := new String'(Prompt);
end Set_Prompt;
---------------------
-- Execute_Command --
---------------------
function Execute_Command
(Script : access Shell_Scripting_Record;
CL : Arg_List;
Console : Virtual_Console := null;
Hide_Output : Boolean := False;
Show_Command : Boolean := True;
Errors : access Boolean) return String
is
pragma Unreferenced (Show_Command);
Err : aliased Boolean;
Old_Console : constant Virtual_Console := Script.Console;
begin
if Console /= null then
Script.Console := Console;
end if;
declare
Result : constant String := Execute_GPS_Shell_Command
(Script, CL, Err'Unchecked_Access);
begin
Errors.all := Err;
if Result /= "" and then not Hide_Output then
Insert_Text (Script, Console, Result & ASCII.LF);
end if;
Script.Console := Old_Console;
if not Hide_Output then
Display_Prompt (Script, Script.Console);
end if;
return Result;
end;
end Execute_Command;
---------------------
-- Execute_Command --
---------------------
function Execute_Command
(Script : access Shell_Scripting_Record;
CL : Arg_List;
Console : Virtual_Console := null;
Hide_Output : Boolean := False;
Errors : access Boolean) return Boolean
is
Old_Console : constant Virtual_Console := Script.Console;
Err : aliased Boolean;
begin
if Console /= null then
Script.Console := Console;
end if;
declare
Result : constant String := Trim
(Execute_GPS_Shell_Command (Script, CL, Err'Unchecked_Access),
Ada.Strings.Both);
begin
Errors.all := Err;
if not Hide_Output then
Insert_Text (Script, Console, Result & ASCII.LF);
end if;
Script.Console := Old_Console;
if not Hide_Output then
Display_Prompt (Script, Script.Console);
end if;
return Result = "1" or else To_Lower (Result) = "true";
end;
end Execute_Command;
-------------------------------
-- Execute_GPS_Shell_Command --
-------------------------------
function Execute_GPS_Shell_Command
(Script : access Shell_Scripting_Record'Class;
CL : Arg_List;
Errors : access Boolean) return String
is
Data_C : Command_Hash.Cursor;
Data : Command_Information_Access;
Instance : Class_Instance;
Min, Max : Natural;
Found : Boolean;
Count : Natural;
Command : constant String := Get_Command (CL);
begin
Errors.all := False;
if Script.Finalized then
return "";
end if;
if Command = "" then
return "";
end if;
if Active (Me) then
Trace (Me, "Executing " & To_Display_String (CL)
& " blocked=" & Script.Blocked'Img);
end if;
if Script.Blocked then
Errors.all := True;
return "A command is already executing";
end if;
if Active (Me_Log) then
Trace (Me_Log,
"Executing " & To_Display_String (CL, Max_Arg_Length => 100));
end if;
-- Special case: access to instance constants
if Command (Command'First) = '@' then
Min := 1;
Max := 2;
Found := True;
else
Data_C := Find (Script.Commands_List, Command);
Found := Has_Element (Data_C);
if Found then
Data := Element (Data_C);
Min := Data.Cmd.Minimum_Args;
Max := Data.Cmd.Maximum_Args;
if Data.Cmd.Class /= No_Class
and then not Data.Cmd.Static_Method
and then Data.Cmd.Command /= Constructor_Method
and then Data.Cmd.Command /= Destructor_Method
then
Min := Min + 1;
if Max /= Natural'Last then
Max := Max + 1;
end if;
end if;
end if;
end if;
if Found then
if Min <= Args_Length (CL) and then Args_Length (CL) <= Max then
Count := Args_Length (CL);
if Data /= null and then Data.Cmd.Command = Constructor_Method then
Count := Count + 1;
end if;
declare
Callback : Shell_Callback_Data'Class :=
Shell_Callback_Data'Class (Create (Script, Count));
-- The call above allocates Callback.Args, no need to do that
-- below
begin
Callback.Script := Shell_Scripting (Script);
Callback.CL := Create ("");
if Data /= null
and then Data.Cmd.Command = Constructor_Method
then
Instance := New_Instance (Callback.Script, Data.Cmd.Class);
Append_Argument
(Callback.CL,
Name_From_Instance (Get_CIR (Instance)),
One_Arg);
end if;
for A in 1 .. Args_Length (CL) loop
declare
Args_A : constant String := Nth_Arg (CL, A);
begin
if Args_A'Length > 0
and then Args_A (Args_A'First) = '%'
then
declare
Num : Integer;
begin
Num := Integer'Value
(Args_A (Args_A'First + 1 .. Args_A'Last));
Append_Argument
(Callback.CL,
Script.Returns
(Num + Script.Returns'First - 1).all,
One_Arg);
exception
when Constraint_Error =>
Append_Argument (Callback.CL, Args_A, One_Arg);
end;
else
Append_Argument (Callback.CL, Args_A, One_Arg);
end if;
end;
end loop;
if Data = null then
-- Accessing a field
Instance := Nth_Arg (Callback, 1, Any_Class);
-- To match python, we first check for simple properties
declare
Prop : constant Instance_Property :=
Get_Data
(Instance,
Cst_Prefix
& Command
(Command'First + 1 .. Command'Last));
P : Property_Descr_Access;
begin
if Prop /= null then
Trace (Me, "A simple property");
if Number_Of_Arguments (Callback) = 2 then
Errors.all := True;
return "Property is read-only: "
& Command (Command'First + 1 .. Command'Last);
end if;
Set_Return_Value (Callback, As_String (Prop.all));
else
Trace (Me, "A setter/getter property args="
& Number_Of_Arguments (Callback)'Img);
-- Does this correspond to a setter/getter property ?
P := Script.Repo.Properties;
while P /= null loop
exit when P.Class =
Shell_Class_Instance (Get_CIR (Instance)).Class
and then P.Name =
Command (Command'First + 1 .. Command'Last);
P := P.Next;
end loop;
if P = null then
Errors.all := True;
return "Command not recognized: " & Command;
end if;
if Number_Of_Arguments (Callback) = 1 then
if P.Getter = null then
Trace (Me, "Property is read-only");
Errors.all := True;
return "Property is write-only: "
& Command (Command'First + 1 .. Command'Last);
end if;
P.Getter (Callback, P.Name);
-- Already set the return value, nothing else to do
else
if P.Setter = null then
Errors.all := True;
return "Property is read-only: "
& Command (Command'First + 1 .. Command'Last);
end if;
P.Setter (Callback, P.Name);
-- Already set the value, nothing else to do
end if;
end if;
end;
else
Data.Cmd.Handler (Callback, Data.Cmd.Command);
if Callback.Return_As_Error then
Errors.all := True;
Free (Callback.Return_Dict);
declare
R : constant String := Callback.Return_Value.all;
begin
Free (Callback.Return_Value);
return R;
end;
end if;
if Data.Cmd.Command = Constructor_Method then
Set_Return_Value (Callback, Instance);
end if;
if Callback.Return_Dict /= null then
Free (Callback.Return_Value);
Callback.Return_Value := Callback.Return_Dict;
Callback.Return_Dict := null;
end if;
end if;
-- Save the return value for the future
Free (Script.Returns (Script.Returns'Last));
Script.Returns
(Script.Returns'First + 1 .. Script.Returns'Last) :=
Script.Returns
(Script.Returns'First .. Script.Returns'Last - 1);
if Callback.Return_Value = null then
Script.Returns (Script.Returns'First) := new String'("");
else
Script.Returns (Script.Returns'First) :=
Callback.Return_Value;
end if;
if Callback.Return_Value = null then
return "";
else
-- Do not free Callback.Return_Value, it is stored in the
-- list of previous commands
return Callback.Return_Value.all;
end if;
end;
else
Errors.all := True;
return "Incorrect number of arguments for " & Command;
end if;
end if;
Errors.all := True;
return "Command not recognized: " & Command;
exception
when Invalid_Parameter =>
Errors.all := True;
return "Invalid parameter for " & Command;
when E : others =>
Errors.all := True;
return Exception_Information (E);
end Execute_GPS_Shell_Command;
-------------------------------
-- Execute_GPS_Shell_Command --
-------------------------------
function Execute_GPS_Shell_Command
(Script : access Shell_Scripting_Record'Class;
Command : String;
Errors : access Boolean) return String
is
CL : Arg_List;
First, Last : Integer;
Quoted : Boolean;
Triple_Quoted : Boolean;
begin
Errors.all := False;
if Command /= "" then
First := Command'First;
while First <= Command'Last loop
while First <= Command'Last
and then (Command (First) = ' '
or else Command (First) = ASCII.HT)
loop
First := First + 1;
end loop;
if First > Command'Last then
exit;
end if;
Last := First;
Quoted := False;
Triple_Quoted := False;
-- Search until the beginning of the next command (separated by
-- semicolon or newline).
while Last <= Command'Last loop
exit when not Quoted
and then not Triple_Quoted
and then (Command (Last) = ';'
or else Command (Last) = ASCII.LF);
if Command (Last) = '"' then
if Last <= Command'Last - 2
and then Command (Last + 1) = '"'
and then Command (Last + 2) = '"'
then
Triple_Quoted := not Triple_Quoted;
Last := Last + 2;
elsif not Triple_Quoted then
Quoted := not Quoted;
end if;
elsif Command (Last) = '\'
and then Last < Command'Last
then
Last := Last + 1;
end if;
Last := Last + 1;
end loop;
if Last - 1 >= First then
CL := Parse_String (Command (First .. Last - 1),
Command_Line_Treatment (Script));
if CL = Empty_Command_Line then
Errors.all := True;
return "Couldn't parse argument string for "
& Command (First .. Last - 1);
else
declare
R : constant String := Execute_GPS_Shell_Command
(Script,
CL => CL,
Errors => Errors);
begin
if Last > Command'Last then
return R;
end if;
end;
end if;
end if;
First := Last + 1;
end loop;
end if;
return "";
end Execute_GPS_Shell_Command;
----------------
-- Get_Script --
----------------
function Get_Script
(Data : Shell_Callback_Data) return Scripting_Language is
begin
return Scripting_Language (Data.Script);
end Get_Script;
--------------------
-- Get_Repository --
--------------------
function Get_Repository
(Script : access Shell_Scripting_Record) return Scripts_Repository is
begin
return Script.Repo;
end Get_Repository;
--------------------
-- Current_Script --
--------------------
function Current_Script
(Script : access Shell_Scripting_Record) return String
is
pragma Unreferenced (Script);
begin
return "<shell script>";
end Current_Script;
-------------------------
-- Number_Of_Arguments --
-------------------------
function Number_Of_Arguments (Data : Shell_Callback_Data) return Natural is
begin
return Args_Length (Data.CL);
end Number_Of_Arguments;
----------
-- Free --
----------
procedure Free (Data : in out Shell_Callback_Data) is
begin
Free (Data.Return_Value);
Free (Data.Return_Dict);
end Free;
-----------
-- Clone --
-----------
function Clone (Data : Shell_Callback_Data) return Callback_Data'Class is
New_CL : Arg_List := Create (Get_Command (Data.CL));
begin
for A in 1 .. Args_Length (Data.CL) loop
Append_Argument (New_CL, Nth_Arg (Data.CL, A), One_Arg);
end loop;
return Shell_Callback_Data'
(Callback_Data with
CL => New_CL,
Script => Data.Script,
Return_Value => null,
Return_Dict => null,
Return_As_List => False,
Return_As_Error => False);
end Clone;
------------
-- Create --
------------
function Create
(Script : access Shell_Scripting_Record;
Arguments_Count : Natural) return Callback_Data'Class
is
Data : constant Shell_Callback_Data :=
(Callback_Data with
Script => Shell_Scripting (Script),
CL => Empty_Command_Line,
Return_Value => null,
Return_Dict => null,
Return_As_List => False,
Return_As_Error => False);
pragma Unreferenced (Arguments_Count);
begin
return Data;
end Create;
-----------------
-- Set_Nth_Arg --
-----------------
procedure Set_Nth_Arg
(Data : in out Shell_Callback_Data; N : Positive; Value : Subprogram_Type)
is
begin
Set_Nth_Arg
(Data.CL, N,
Shell_Subprogram_Record (Value.all).Command.all);
end Set_Nth_Arg;
-----------------
-- Set_Nth_Arg --
-----------------
procedure Set_Nth_Arg
(Data : in out Shell_Callback_Data; N : Positive; Value : String) is
begin
Set_Nth_Arg (Data.CL, N, Value);
end Set_Nth_Arg;
-----------------
-- Set_Nth_Arg --
-----------------
procedure Set_Nth_Arg
(Data : in out Shell_Callback_Data; N : Positive; Value : Integer) is
begin
Set_Nth_Arg (Data.CL, N, Integer'Image (Value));
end Set_Nth_Arg;
-----------------
-- Set_Nth_Arg --
-----------------
procedure Set_Nth_Arg
(Data : in out Shell_Callback_Data; N : Positive; Value : Float) is
begin
Set_Nth_Arg (Data.CL, N, Float'Image (Value));
end Set_Nth_Arg;
-----------------
-- Set_Nth_Arg --
-----------------
procedure Set_Nth_Arg
(Data : in out Shell_Callback_Data; N : Positive; Value : Boolean) is
begin
Set_Nth_Arg (Data.CL, N, Boolean'Image (Value));
end Set_Nth_Arg;
-----------------
-- Set_Nth_Arg --
-----------------
procedure Set_Nth_Arg
(Data : in out Shell_Callback_Data;
N : Positive; Value : Class_Instance) is
begin
Set_Nth_Arg (Data.CL, N, Name_From_Instance (Get_CIR (Value)));
end Set_Nth_Arg;
-----------------
-- Set_Nth_Arg --
-----------------
overriding procedure Set_Nth_Arg
(Data : in out Shell_Callback_Data;
N : Positive; Value : List_Instance) is
begin
Set_Nth_Arg
(Data.CL, N, '(' & Get_Command (Shell_Callback_Data (Value).CL) & ')');
end Set_Nth_Arg;
--------------
-- New_List --
--------------
overriding function New_List
(Script : access Shell_Scripting_Record;
Class : Class_Type := No_Class)
return List_Instance'Class
is
pragma Unreferenced (Class);
List : Shell_Callback_Data;
begin
List.Script := Shell_Scripting (Script);
List.CL := Empty_Command_Line;
return List;
end New_List;
-------------
-- Nth_Arg --
-------------
overriding function Nth_Arg
(Data : Shell_Callback_Data; N : Positive)
return List_Instance'Class
is
List : Shell_Callback_Data;
begin
List.Script := Data.Script;
if N > Args_Length (Data.CL) then
List.CL := Empty_Command_Line; -- An empty list
else
List.CL := Parse_String (Nth_Arg (Data.CL, N), Separate_Args);
end if;
return List;
end Nth_Arg;
-------------
-- Nth_Arg --
-------------
overriding function Nth_Arg
(Data : Shell_Callback_Data; N : Positive)
return Dictionary_Instance'Class is
begin
raise Program_Error with "Dictionary is not supported by language";
return Nth_Arg (Data, N);
end Nth_Arg;
-------------
-- Nth_Arg --
-------------
function Nth_Arg
(Data : Shell_Callback_Data; N : Positive; Success : access Boolean)
return String
is
begin
if N > Args_Length (Data.CL) then
Success.all := False;
return "";
else
Success.all := True;
return Nth_Arg (Data.CL, N);
end if;
end Nth_Arg;
-------------
-- Nth_Arg --
-------------
function Nth_Arg
(Data : Shell_Callback_Data;
N : Positive;
Success : access Boolean) return Unbounded_String is
begin
if N > Args_Length (Data.CL) then
Success.all := False;
return Null_Unbounded_String;
else
Success.all := True;
return Nth_Arg (Data.CL, N);
end if;
end Nth_Arg;
-------------
-- Nth_Arg --
-------------
function Nth_Arg
(Data : Shell_Callback_Data;
N : Positive;
Class : Class_Type;
Allow_Null : Boolean;
Success : access Boolean) return Class_Instance
is
Class_Name : constant String := Nth_Arg (Data, N, Success);
Ins : Class_Instance;
begin
if not Success.all then
return No_Class_Instance;
end if;
Ins := Instance_From_Name (Data.Script, Class_Name);
if Ins = No_Class_Instance and then Allow_Null then
return No_Class_Instance;
end if;
if Ins = No_Class_Instance
or else (Class /= Any_Class
and then not Is_Subclass (Ins, Get_Name (Class)))
then
raise Invalid_Parameter;
else
return Ins;
end if;
end Nth_Arg;
-------------
-- Nth_Arg --
-------------
function Nth_Arg
(Data : Shell_Callback_Data;
N : Positive;
Success : access Boolean) return Subprogram_Type
is
Name : constant String := Nth_Arg (Data, N, Success);
begin
if not Success.all then
return null;
else
return new Shell_Subprogram_Record'
(Subprogram_Record with
Script => Get_Script (Data),
Command => new String'(Name));
end if;
end Nth_Arg;
-------------
-- Nth_Arg --
-------------
function Nth_Arg
(Data : Shell_Callback_Data; N : Positive) return Boolean
is
Success : aliased Boolean;
S : constant String := Nth_Arg (Data, N, Success'Access);
begin
if Success then
return Boolean'Value (S);
else
raise No_Such_Parameter;
end if;
exception
when Constraint_Error =>
raise Invalid_Parameter;
end Nth_Arg;
-------------
-- Nth_Arg --
-------------
function Nth_Arg
(Data : Shell_Callback_Data; N : Positive) return Integer
is
Success : aliased Boolean;
S : constant String := Nth_Arg (Data, N, Success'Access);
begin
if Success then
return Integer'Value (S);
else
raise No_Such_Parameter;
end if;
exception
when Constraint_Error =>
raise Invalid_Parameter;
end Nth_Arg;
-------------
-- Nth_Arg --
-------------
function Nth_Arg
(Data : Shell_Callback_Data; N : Positive) return Float
is
Success : aliased Boolean;
S : constant String := Nth_Arg (Data, N, Success'Access);
begin
if Success then
return Float'Value (S);
else
raise No_Such_Parameter;
end if;
exception
when Constraint_Error =>
raise Invalid_Parameter;
end Nth_Arg;
-------------
-- Nth_Arg --
-------------
function Nth_Arg
(Data : Shell_Callback_Data; N : Positive) return String
is
Success : aliased Boolean;
Result : constant String := Nth_Arg (Data, N, Success'Access);
begin
if not Success then
raise No_Such_Parameter;
else
return Result;
end if;
end Nth_Arg;
-------------
-- Nth_Arg --
-------------
function Nth_Arg
(Data : Shell_Callback_Data; N : Positive) return Unbounded_String
is
Success : aliased Boolean;
Result : constant Unbounded_String := Nth_Arg (Data, N, Success'Access);
begin
if not Success then
raise No_Such_Parameter;
else
return Result;
end if;
end Nth_Arg;
-------------
-- Nth_Arg --
-------------
function Nth_Arg
(Data : Shell_Callback_Data; N : Positive) return Subprogram_Type
is
Success : aliased Boolean;
Result : constant Subprogram_Type := Nth_Arg (Data, N, Success'Access);
begin
if not Success then
raise No_Such_Parameter;
else
return Result;
end if;
end Nth_Arg;
-------------
-- Nth_Arg --
-------------
function Nth_Arg
(Data : Shell_Callback_Data; N : Positive; Class : Class_Type;
Allow_Null : Boolean := False) return Class_Instance
is
Success : aliased Boolean;
Result : constant Class_Instance := Nth_Arg
(Data, N, Class, Allow_Null, Success'Access);
begin
if not Success then
raise No_Such_Parameter;
else
return Result;
end if;
end Nth_Arg;
-------------
-- Nth_Arg --
-------------
function Nth_Arg
(Data : Shell_Callback_Data; N : Positive; Default : String)
return String
is
Success : aliased Boolean;
Result : constant String := Nth_Arg (Data, N, Success'Access);
begin
if not Success then
return Default;
else
return Result;
end if;
end Nth_Arg;
-------------
-- Nth_Arg --
-------------
function Nth_Arg
(Data : Shell_Callback_Data; N : Positive; Default : Integer)
return Integer
is
Success : aliased Boolean;
Result : constant String := Nth_Arg (Data, N, Success'Access);
begin
if not Success then
return Default;
else
return Integer'Value (Result);
end if;
end Nth_Arg;
-------------
-- Nth_Arg --
-------------
function Nth_Arg
(Data : Shell_Callback_Data; N : Positive; Default : Float)
return Float
is
Success : aliased Boolean;
Result : constant String := Nth_Arg (Data, N, Success'Access);
begin
if not Success then
return Default;
else
return Float'Value (Result);
end if;
end Nth_Arg;
-------------
-- Nth_Arg --
-------------
function Nth_Arg
(Data : Shell_Callback_Data; N : Positive; Default : Boolean)
return Boolean
is
Success : aliased Boolean;
Result : constant String := Nth_Arg (Data, N, Success'Access);
begin
if not Success then
return Default;
else
return Boolean'Value (Result);
end if;
end Nth_Arg;
-------------
-- Nth_Arg --
-------------
function Nth_Arg
(Data : Shell_Callback_Data;
N : Positive;
Class : Class_Type := Any_Class;
Default : Class_Instance;
Allow_Null : Boolean := False) return Class_Instance
is
Success : aliased Boolean;
Result : constant Class_Instance := Nth_Arg
(Data, N, Class, Allow_Null, Success'Access);
begin
if not Success then
return Default;
else
return Result;
end if;
end Nth_Arg;
-------------
-- Nth_Arg --
-------------
function Nth_Arg
(Data : Shell_Callback_Data;
N : Positive;
Default : Subprogram_Type) return Subprogram_Type
is
Success : aliased Boolean;
Result : constant Subprogram_Type := Nth_Arg (Data, N, Success'Access);
begin
if not Success then
return Default;
else
return Result;
end if;
end Nth_Arg;
-------------------
-- Set_Error_Msg --
-------------------
procedure Set_Error_Msg (Data : in out Shell_Callback_Data; Msg : String) is
begin
Free (Data.Return_Value);
Data.Return_As_Error := True;
Data.Return_Value := new String'(Msg);
end Set_Error_Msg;
------------------------------
-- Set_Return_Value_As_List --
------------------------------
overriding procedure Set_Return_Value_As_List
(Data : in out Shell_Callback_Data;
Size : Natural := 0;
Class : Class_Type := No_Class)
is
pragma Unreferenced (Size, Class);
begin
Data.Return_As_List := True;
end Set_Return_Value_As_List;
--------------------------
-- Set_Return_Value_Key --
--------------------------
procedure Set_Return_Value_Key
(Data : in out Shell_Callback_Data;
Key : String;
Append : Boolean := False)
is
pragma Unreferenced (Append);
Tmp : GNAT.Strings.String_Access;
begin
if Data.Return_Value = null then
if Data.Return_Dict = null then
Data.Return_Dict := new String'(Key & " => ()");
else
Tmp := Data.Return_Dict;
Data.Return_Dict := new String'(Tmp.all & ", " & Key & " => ()");
Free (Tmp);
end if;
else
if Data.Return_Dict = null then
Data.Return_Dict := new String'
(Key & " => (" & Data.Return_Value.all & ')');
else
Tmp := Data.Return_Dict;
Data.Return_Dict := new String'
(Tmp.all & ", " & Key & " => (" & Data.Return_Value.all & ')');
Free (Tmp);
end if;
end if;
Data.Return_As_List := False;
Free (Data.Return_Value);
end Set_Return_Value_Key;
--------------------------
-- Set_Return_Value_Key --
--------------------------
procedure Set_Return_Value_Key
(Data : in out Shell_Callback_Data;
Key : Integer;
Append : Boolean := False) is
begin
Set_Return_Value_Key (Data, Integer'Image (Key), Append);
end Set_Return_Value_Key;
--------------------------
-- Set_Return_Value_Key --
--------------------------
procedure Set_Return_Value_Key
(Data : in out Shell_Callback_Data;
Key : Class_Instance;
Append : Boolean := False) is
begin
Set_Return_Value_Key (Data, Name_From_Instance (Get_CIR (Key)), Append);
end Set_Return_Value_Key;
----------------------
-- Set_Return_Value --
----------------------
procedure Set_Return_Value
(Data : in out Shell_Callback_Data; Value : Integer) is
begin
if not Data.Return_As_List then
Free (Data.Return_Value);
end if;
Set_Return_Value (Data, Integer'Image (Value));
end Set_Return_Value;
overriding procedure Set_Address_Return_Value
(Data : in out Shell_Callback_Data; Value : System.Address) is
begin
if not Data.Return_As_List then
Free (Data.Return_Value);
end if;
Set_Return_Value (Data, System.Address_Image (Value));
end Set_Address_Return_Value;
----------------------
-- Set_Return_Value --
----------------------
procedure Set_Return_Value
(Data : in out Shell_Callback_Data; Value : Float) is
begin
if not Data.Return_As_List then
Free (Data.Return_Value);
end if;
Set_Return_Value (Data, Float'Image (Value));
end Set_Return_Value;
----------------------
-- Set_Return_Value --
----------------------
procedure Set_Return_Value
(Data : in out Shell_Callback_Data; Value : Boolean) is
begin
if not Data.Return_As_List then
Free (Data.Return_Value);
end if;
Set_Return_Value (Data, Boolean'Image (Value));
end Set_Return_Value;
----------------------
-- Set_Return_Value --
----------------------
procedure Set_Return_Value
(Data : in out Shell_Callback_Data; Value : String)
is
Tmp : GNAT.Strings.String_Access;
begin
if Data.Return_As_List and then Data.Return_Value /= null then
Tmp := Data.Return_Value;
Data.Return_Value := new String (1 .. Tmp'Length + 1 + Value'Length);
Data.Return_Value (1 .. Tmp'Length) := Tmp.all;
Data.Return_Value (Tmp'Length + 1) := ASCII.LF;
Data.Return_Value (Tmp'Length + 2 .. Data.Return_Value'Last) := Value;
Free (Tmp);
else
Free (Data.Return_Value);
Data.Return_Value := new String'(Value);
end if;
end Set_Return_Value;
----------------------
-- Set_Return_Value --
----------------------
procedure Set_Return_Value
(Data : in out Shell_Callback_Data; Value : Class_Instance) is
begin
if Value = No_Class_Instance then
Set_Return_Value (Data, String'("null"));
else
Set_Return_Value (Data, Name_From_Instance (Get_CIR (Value)));
end if;
end Set_Return_Value;
----------------------
-- Set_Return_Value --
----------------------
overriding procedure Set_Return_Value
(Data : in out Shell_Callback_Data; Value : List_Instance) is
begin
Set_Return_Value
(Data, '(' & Get_Command (Shell_Callback_Data (Value).CL) & ')');
end Set_Return_Value;
------------------
-- New_Instance --
------------------
function New_Instance
(Script : access Shell_Scripting_Record;
Class : Class_Type) return Class_Instance
is
Instance : Shell_Class_Instance;
begin
Instance := new Shell_Class_Instance_Record;
Instance.Class := Class;
Instance.Script := Script;
return R : Class_Instance do
CI_Pointers.Set (R.Ref, Instance);
Instances_List.Prepend (Script.Instances, R);
end return;
end New_Instance;
----------------
-- Get_Method --
----------------
overriding function Get_Method
(Instance : access Shell_Class_Instance_Record;
Name : String) return Subprogram_Type
is
Inst_Name : constant String := Name_From_Instance (Instance);
begin
return new Shell_Subprogram_Record'
(Script => Scripting_Language (Instance.Script),
Command => new String'
(Get_Name (Instance.Class) & "." & Name & " " & Inst_Name));
end Get_Method;
--------------------
-- Print_Refcount --
--------------------
function Print_Refcount
(Instance : access Shell_Class_Instance_Record) return String
is
pragma Unreferenced (Instance);
begin
return "";
end Print_Refcount;
------------------------
-- Execute_Expression --
------------------------
overriding procedure Execute_Expression
(Result : in out Shell_Callback_Data;
Expression : String;
Hide_Output : Boolean := True)
is
pragma Unreferenced (Hide_Output);
Errors : aliased Boolean;
begin
Result.Set_Return_Value
(String'(Execute_GPS_Shell_Command
(Shell_Scripting (Get_Script (Result)),
Expression,
Errors'Unchecked_Access)));
end Execute_Expression;
---------------------
-- Execute_Command --
---------------------
function Execute_Command
(Script : access Shell_Scripting_Record;
Command : String;
Args : Callback_Data'Class) return Boolean
is
Errors : aliased Boolean;
CL : Arg_List := Create (Command);
begin
for J in 1 .. Args_Length (Shell_Callback_Data (Args).CL) loop
Append_Argument
(CL, Nth_Arg (Shell_Callback_Data (Args).CL, J), One_Arg);
end loop;
declare
Result : constant String := Trim
(Execute_GPS_Shell_Command (Script, CL, Errors'Unchecked_Access),
Ada.Strings.Both);
begin
return Result = "1" or else To_Lower (Result) = "true";
end;
end Execute_Command;
-------------
-- Execute --
-------------
overriding function Execute
(Subprogram : access Shell_Subprogram_Record;
Args : Callback_Data'Class;
Error : not null access Boolean) return Boolean
is
begin
Error.all := False;
return To_Lower
(Execute (Shell_Subprogram (Subprogram), Args)) = "true";
end Execute;
-------------
-- Execute --
-------------
function Execute
(Subprogram : access Shell_Subprogram_Record;
Args : Callback_Data'Class;
Error : not null access Boolean) return String
is
D : constant Shell_Callback_Data := Shell_Callback_Data (Args);
CL : Arg_List;
begin
CL := Create (Subprogram.Command.all);
for Arg in 1 .. Args_Length (D.CL) loop
Append_Argument (CL, Nth_Arg (D.CL, Arg), One_Arg);
end loop;
return Execute_GPS_Shell_Command
(Script => Shell_Scripting (Subprogram.Script),
CL => CL,
Errors => Error);
end Execute;
-------------
-- Execute --
-------------
overriding function Execute
(Subprogram : access Shell_Subprogram_Record;
Args : Callback_Data'Class;
Error : not null access Boolean) return Class_Instance
is
Result : constant String := Execute (Subprogram, Args, Error);
begin
return Instance_From_Name (Shell_Scripting (Subprogram.Script), Result);
end Execute;
-------------
-- Execute --
-------------
overriding function Execute
(Subprogram : access Shell_Subprogram_Record;
Args : Callback_Data'Class;
Error : not null access Boolean) return List_Instance'Class
is
List : Shell_Callback_Data;
begin
List.Script := Shell_Scripting (Subprogram.Script);
List.CL := Parse_String
(Execute (Subprogram, Args, Error), Separate_Args);
return List;
end Execute;
-------------
-- Execute --
-------------
function Execute
(Subprogram : access Shell_Subprogram_Record;
Args : Callback_Data'Class;
Error : not null access Boolean) return GNAT.Strings.String_List
is
pragma Unreferenced (Subprogram, Args);
begin
Error.all := True;
-- ??? We are in asynchronous mode, see Execute for String above
return (1 .. 0 => null);
end Execute;
-------------
-- Execute --
-------------
overriding function Execute
(Subprogram : access Shell_Subprogram_Record;
Args : Callback_Data'Class;
Error : not null access Boolean) return Any_Type
is
pragma Unreferenced (Subprogram, Args);
begin
Error.all := True;
-- Any_Type is not supported for shell scripts
raise Program_Error;
return Empty_Any_Type;
end Execute;
--------------
-- Get_Name --
--------------
function Get_Name
(Subprogram : access Shell_Subprogram_Record) return String is
begin
return "command: " & Subprogram.Command.all;
end Get_Name;
----------
-- Free --
----------
procedure Free (Subprogram : in out Shell_Subprogram_Record) is
begin
Free (Subprogram.Command);
end Free;
----------------
-- Get_Script --
----------------
function Get_Script
(Subprogram : Shell_Subprogram_Record) return Scripting_Language
is
begin
return Subprogram.Script;
end Get_Script;
-----------------
-- Get_Command --
-----------------
function Get_Command
(Subprogram : access Shell_Subprogram_Record) return String is
begin
return Subprogram.Command.all;
end Get_Command;
----------------
-- Initialize --
----------------
procedure Initialize
(Subprogram : in out Shell_Subprogram_Record'Class;
Script : access Scripting_Language_Record'Class;
Command : String) is
begin
Free (Subprogram.Command);
Subprogram.Command := new String'(Command);
Subprogram.Script := Scripting_Language (Script);
end Initialize;
--------------
-- Get_Args --
--------------
function Get_Args
(Data : Shell_Callback_Data) return GNAT.OS_Lib.Argument_List is
begin
return To_List (Data.CL, False);
-- ??? There is a memory leak here. Maybe we can get rid of this
-- subprogram?
end Get_Args;
----------------------------
-- Command_Line_Treatment --
----------------------------
overriding function Command_Line_Treatment
(Script : access Shell_Scripting_Record) return Command_Line_Mode
is
pragma Unreferenced (Script);
begin
return Separate_Args;
end Command_Line_Treatment;
---------------------
-- Execute_Command --
---------------------
overriding procedure Execute_Command
(Args : in out Shell_Callback_Data;
Command : String;
Hide_Output : Boolean := True)
is
pragma Unreferenced (Hide_Output);
Script : constant Shell_Scripting := Shell_Scripting (Get_Script (Args));
Errors : aliased Boolean;
CL : Arg_List := Create (Command);
begin
for J in 1 .. Args_Length (Args.CL) loop
Append_Argument (CL, Nth_Arg (Args.CL, J), One_Arg);
end loop;
declare
Result : constant String := Trim
(Execute_GPS_Shell_Command (Script, CL, Errors'Unchecked_Access),
Ada.Strings.Both);
begin
Free (Args.Return_Value);
Args.Return_Value := new String'(Result);
end;
end Execute_Command;
------------------
-- Return_Value --
------------------
overriding function Return_Value
(Data : Shell_Callback_Data) return String is
begin
if Data.Return_Value = null then
raise Invalid_Parameter with "No return value";
else
return Data.Return_Value.all;
end if;
end Return_Value;
------------------
-- Return_Value --
------------------
overriding function Return_Value
(Data : Shell_Callback_Data) return Integer is
begin
return Integer'Value (Return_Value (Data));
end Return_Value;
------------------
-- Return_Value --
------------------
overriding function Return_Value
(Data : Shell_Callback_Data) return Float is
begin
return Float'Value (Return_Value (Data));
end Return_Value;
------------------
-- Return_Value --
------------------
overriding function Return_Value
(Data : Shell_Callback_Data) return Boolean is
begin
return Boolean'Value (Return_Value (Data));
end Return_Value;
------------------
-- Return_Value --
------------------
overriding function Return_Value
(Data : Shell_Callback_Data) return Class_Instance is
begin
return Instance_From_Name (Data.Script, Return_Value (Data));
end Return_Value;
------------------
-- Return_Value --
------------------
overriding function Return_Value
(Data : Shell_Callback_Data) return List_Instance'Class
is
List : Shell_Callback_Data;
begin
List.Script := Data.Script;
List.CL := Parse_String (Return_Value (Data), Separate_Args);
return List;
end Return_Value;
-------------------
-- Get_User_Data --
-------------------
overriding function Get_User_Data
(Self : not null access Shell_Class_Instance_Record)
return access User_Data_List is
begin
return Self.Props'Access;
end Get_User_Data;
end GNATCOLL.Scripts.Shell;
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