| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT COMPILER COMPONENTS -- |
| -- -- |
| -- G N A T . C O M M A N D _ L I N E -- |
| -- -- |
| -- B o d y -- |
| -- -- |
| -- Copyright (C) 1999-2009, Free Software Foundation, Inc. -- |
| -- -- |
| -- GNAT is free software; you can redistribute it and/or modify it under -- |
| -- terms of the GNU General Public License as published by the Free Soft- -- |
| -- ware Foundation; either version 3, or (at your option) any later ver- -- |
| -- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- |
| -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- |
| -- or FITNESS FOR A PARTICULAR PURPOSE. -- |
| -- -- |
| -- As a special exception under Section 7 of GPL version 3, you are granted -- |
| -- additional permissions described in the GCC Runtime Library Exception, -- |
| -- version 3.1, as published by the Free Software Foundation. -- |
| -- -- |
| -- 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/>. -- |
| -- -- |
| -- GNAT was originally developed by the GNAT team at New York University. -- |
| -- Extensive contributions were provided by Ada Core Technologies Inc. -- |
| -- -- |
| ------------------------------------------------------------------------------ |
| |
| with Ada.Unchecked_Deallocation; |
| with Ada.Strings.Unbounded; |
| |
| with GNAT.OS_Lib; use GNAT.OS_Lib; |
| |
| package body GNAT.Command_Line is |
| |
| package CL renames Ada.Command_Line; |
| |
| type Switch_Parameter_Type is |
| (Parameter_None, |
| Parameter_With_Optional_Space, -- ':' in getopt |
| Parameter_With_Space_Or_Equal, -- '=' in getopt |
| Parameter_No_Space, -- '!' in getopt |
| Parameter_Optional); -- '?' in getopt |
| |
| procedure Set_Parameter |
| (Variable : out Parameter_Type; |
| Arg_Num : Positive; |
| First : Positive; |
| Last : Positive; |
| Extra : Character := ASCII.NUL); |
| pragma Inline (Set_Parameter); |
| -- Set the parameter that will be returned by Parameter below |
| -- Parameters need to be defined ??? |
| |
| function Goto_Next_Argument_In_Section (Parser : Opt_Parser) return Boolean; |
| -- Go to the next argument on the command line. If we are at the end of |
| -- the current section, we want to make sure there is no other identical |
| -- section on the command line (there might be multiple instances of |
| -- -largs). Returns True iff there is another argument. |
| |
| function Get_File_Names_Case_Sensitive return Integer; |
| pragma Import (C, Get_File_Names_Case_Sensitive, |
| "__gnat_get_file_names_case_sensitive"); |
| |
| File_Names_Case_Sensitive : constant Boolean := |
| Get_File_Names_Case_Sensitive /= 0; |
| |
| procedure Canonical_Case_File_Name (S : in out String); |
| -- Given a file name, converts it to canonical case form. For systems where |
| -- file names are case sensitive, this procedure has no effect. If file |
| -- names are not case sensitive (i.e. for example if you have the file |
| -- "xyz.adb", you can refer to it as XYZ.adb or XyZ.AdB), then this call |
| -- converts the given string to canonical all lower case form, so that two |
| -- file names compare equal if they refer to the same file. |
| |
| procedure Internal_Initialize_Option_Scan |
| (Parser : Opt_Parser; |
| Switch_Char : Character; |
| Stop_At_First_Non_Switch : Boolean; |
| Section_Delimiters : String); |
| -- Initialize Parser, which must have been allocated already |
| |
| function Argument (Parser : Opt_Parser; Index : Integer) return String; |
| -- Return the index-th command line argument |
| |
| procedure Find_Longest_Matching_Switch |
| (Switches : String; |
| Arg : String; |
| Index_In_Switches : out Integer; |
| Switch_Length : out Integer; |
| Param : out Switch_Parameter_Type); |
| -- return the Longest switch from Switches that matches at least |
| -- partially Arg. Index_In_Switches is set to 0 if none matches |
| |
| procedure Unchecked_Free is new Ada.Unchecked_Deallocation |
| (Argument_List, Argument_List_Access); |
| |
| procedure Unchecked_Free is new Ada.Unchecked_Deallocation |
| (Command_Line_Configuration_Record, Command_Line_Configuration); |
| |
| procedure Remove (Line : in out Argument_List_Access; Index : Integer); |
| -- Remove a specific element from Line |
| |
| procedure Add |
| (Line : in out Argument_List_Access; |
| Str : String_Access; |
| Before : Boolean := False); |
| -- Add a new element to Line. If Before is True, the item is inserted at |
| -- the beginning, else it is appended. |
| |
| function Can_Have_Parameter (S : String) return Boolean; |
| -- True if S can have a parameter. |
| |
| function Require_Parameter (S : String) return Boolean; |
| -- True if S requires a parameter. |
| |
| function Actual_Switch (S : String) return String; |
| -- Remove any possible trailing '!', ':', '?' and '=' |
| |
| generic |
| with procedure Callback (Simple_Switch : String; Parameter : String); |
| procedure For_Each_Simple_Switch |
| (Cmd : Command_Line; |
| Switch : String; |
| Parameter : String := ""; |
| Unalias : Boolean := True); |
| -- Breaks Switch into as simple switches as possible (expanding aliases and |
| -- ungrouping common prefixes when possible), and call Callback for each of |
| -- these. |
| |
| procedure Sort_Sections |
| (Line : GNAT.OS_Lib.Argument_List_Access; |
| Sections : GNAT.OS_Lib.Argument_List_Access; |
| Params : GNAT.OS_Lib.Argument_List_Access); |
| -- Reorder the command line switches so that the switches belonging to a |
| -- section are grouped together. |
| |
| procedure Group_Switches |
| (Cmd : Command_Line; |
| Result : Argument_List_Access; |
| Sections : Argument_List_Access; |
| Params : Argument_List_Access); |
| -- Group switches with common prefixes whenever possible. Once they have |
| -- been grouped, we also check items for possible aliasing. |
| |
| procedure Alias_Switches |
| (Cmd : Command_Line; |
| Result : Argument_List_Access; |
| Params : Argument_List_Access); |
| -- When possible, replace one or more switches by an alias, i.e. a shorter |
| -- version. |
| |
| function Looking_At |
| (Type_Str : String; |
| Index : Natural; |
| Substring : String) return Boolean; |
| -- Return True if the characters starting at Index in Type_Str are |
| -- equivalent to Substring. |
| |
| -------------- |
| -- Argument -- |
| -------------- |
| |
| function Argument (Parser : Opt_Parser; Index : Integer) return String is |
| begin |
| if Parser.Arguments /= null then |
| return Parser.Arguments (Index + Parser.Arguments'First - 1).all; |
| else |
| return CL.Argument (Index); |
| end if; |
| end Argument; |
| |
| ------------------------------ |
| -- Canonical_Case_File_Name -- |
| ------------------------------ |
| |
| procedure Canonical_Case_File_Name (S : in out String) is |
| begin |
| if not File_Names_Case_Sensitive then |
| for J in S'Range loop |
| if S (J) in 'A' .. 'Z' then |
| S (J) := Character'Val |
| (Character'Pos (S (J)) + |
| Character'Pos ('a') - |
| Character'Pos ('A')); |
| end if; |
| end loop; |
| end if; |
| end Canonical_Case_File_Name; |
| |
| --------------- |
| -- Expansion -- |
| --------------- |
| |
| function Expansion (Iterator : Expansion_Iterator) return String is |
| use GNAT.Directory_Operations; |
| type Pointer is access all Expansion_Iterator; |
| |
| It : constant Pointer := Iterator'Unrestricted_Access; |
| S : String (1 .. 1024); |
| Last : Natural; |
| |
| Current : Depth := It.Current_Depth; |
| NL : Positive; |
| |
| begin |
| -- It is assumed that a directory is opened at the current level. |
| -- Otherwise GNAT.Directory_Operations.Directory_Error will be raised |
| -- at the first call to Read. |
| |
| loop |
| Read (It.Levels (Current).Dir, S, Last); |
| |
| -- If we have exhausted the directory, close it and go back one level |
| |
| if Last = 0 then |
| Close (It.Levels (Current).Dir); |
| |
| -- If we are at level 1, we are finished; return an empty string |
| |
| if Current = 1 then |
| return String'(1 .. 0 => ' '); |
| else |
| -- Otherwise continue with the directory at the previous level |
| |
| Current := Current - 1; |
| It.Current_Depth := Current; |
| end if; |
| |
| -- If this is a directory, that is neither "." or "..", attempt to |
| -- go to the next level. |
| |
| elsif Is_Directory |
| (It.Dir_Name (1 .. It.Levels (Current).Name_Last) & S (1 .. Last)) |
| and then S (1 .. Last) /= "." |
| and then S (1 .. Last) /= ".." |
| then |
| -- We can go to the next level only if we have not reached the |
| -- maximum depth, |
| |
| if Current < It.Maximum_Depth then |
| NL := It.Levels (Current).Name_Last; |
| |
| -- And if relative path of this new directory is not too long |
| |
| if NL + Last + 1 < Max_Path_Length then |
| Current := Current + 1; |
| It.Current_Depth := Current; |
| It.Dir_Name (NL + 1 .. NL + Last) := S (1 .. Last); |
| NL := NL + Last + 1; |
| It.Dir_Name (NL) := Directory_Separator; |
| It.Levels (Current).Name_Last := NL; |
| Canonical_Case_File_Name (It.Dir_Name (1 .. NL)); |
| |
| -- Open the new directory, and read from it |
| |
| GNAT.Directory_Operations.Open |
| (It.Levels (Current).Dir, It.Dir_Name (1 .. NL)); |
| end if; |
| end if; |
| |
| -- If not a directory, check the relative path against the pattern |
| |
| else |
| declare |
| Name : String := |
| It.Dir_Name (It.Start .. It.Levels (Current).Name_Last) |
| & S (1 .. Last); |
| begin |
| Canonical_Case_File_Name (Name); |
| |
| -- If it matches return the relative path |
| |
| if GNAT.Regexp.Match (Name, Iterator.Regexp) then |
| return Name; |
| end if; |
| end; |
| end if; |
| end loop; |
| end Expansion; |
| |
| ----------------- |
| -- Full_Switch -- |
| ----------------- |
| |
| function Full_Switch |
| (Parser : Opt_Parser := Command_Line_Parser) return String |
| is |
| begin |
| if Parser.The_Switch.Extra = ASCII.NUL then |
| return Argument (Parser, Parser.The_Switch.Arg_Num) |
| (Parser.The_Switch.First .. Parser.The_Switch.Last); |
| else |
| return Parser.The_Switch.Extra |
| & Argument (Parser, Parser.The_Switch.Arg_Num) |
| (Parser.The_Switch.First .. Parser.The_Switch.Last); |
| end if; |
| end Full_Switch; |
| |
| ------------------ |
| -- Get_Argument -- |
| ------------------ |
| |
| function Get_Argument |
| (Do_Expansion : Boolean := False; |
| Parser : Opt_Parser := Command_Line_Parser) return String |
| is |
| begin |
| if Parser.In_Expansion then |
| declare |
| S : constant String := Expansion (Parser.Expansion_It); |
| begin |
| if S'Length /= 0 then |
| return S; |
| else |
| Parser.In_Expansion := False; |
| end if; |
| end; |
| end if; |
| |
| if Parser.Current_Argument > Parser.Arg_Count then |
| |
| -- If this is the first time this function is called |
| |
| if Parser.Current_Index = 1 then |
| Parser.Current_Argument := 1; |
| while Parser.Current_Argument <= Parser.Arg_Count |
| and then Parser.Section (Parser.Current_Argument) /= |
| Parser.Current_Section |
| loop |
| Parser.Current_Argument := Parser.Current_Argument + 1; |
| end loop; |
| else |
| return String'(1 .. 0 => ' '); |
| end if; |
| |
| elsif Parser.Section (Parser.Current_Argument) = 0 then |
| while Parser.Current_Argument <= Parser.Arg_Count |
| and then Parser.Section (Parser.Current_Argument) /= |
| Parser.Current_Section |
| loop |
| Parser.Current_Argument := Parser.Current_Argument + 1; |
| end loop; |
| end if; |
| |
| Parser.Current_Index := Integer'Last; |
| |
| while Parser.Current_Argument <= Parser.Arg_Count |
| and then Parser.Is_Switch (Parser.Current_Argument) |
| loop |
| Parser.Current_Argument := Parser.Current_Argument + 1; |
| end loop; |
| |
| if Parser.Current_Argument > Parser.Arg_Count then |
| return String'(1 .. 0 => ' '); |
| elsif Parser.Section (Parser.Current_Argument) = 0 then |
| return Get_Argument (Do_Expansion); |
| end if; |
| |
| Parser.Current_Argument := Parser.Current_Argument + 1; |
| |
| -- Could it be a file name with wild cards to expand? |
| |
| if Do_Expansion then |
| declare |
| Arg : constant String := |
| Argument (Parser, Parser.Current_Argument - 1); |
| Index : Positive; |
| |
| begin |
| Index := Arg'First; |
| while Index <= Arg'Last loop |
| if Arg (Index) = '*' |
| or else Arg (Index) = '?' |
| or else Arg (Index) = '[' |
| then |
| Parser.In_Expansion := True; |
| Start_Expansion (Parser.Expansion_It, Arg); |
| return Get_Argument (Do_Expansion); |
| end if; |
| |
| Index := Index + 1; |
| end loop; |
| end; |
| end if; |
| |
| return Argument (Parser, Parser.Current_Argument - 1); |
| end Get_Argument; |
| |
| ---------------------------------- |
| -- Find_Longest_Matching_Switch -- |
| ---------------------------------- |
| |
| procedure Find_Longest_Matching_Switch |
| (Switches : String; |
| Arg : String; |
| Index_In_Switches : out Integer; |
| Switch_Length : out Integer; |
| Param : out Switch_Parameter_Type) |
| is |
| Index : Natural; |
| Length : Natural := 1; |
| P : Switch_Parameter_Type; |
| |
| begin |
| Index_In_Switches := 0; |
| Switch_Length := 0; |
| |
| -- Remove all leading spaces first to make sure that Index points |
| -- at the start of the first switch. |
| |
| Index := Switches'First; |
| while Index <= Switches'Last and then Switches (Index) = ' ' loop |
| Index := Index + 1; |
| end loop; |
| |
| while Index <= Switches'Last loop |
| |
| -- Search the length of the parameter at this position in Switches |
| |
| Length := Index; |
| while Length <= Switches'Last |
| and then Switches (Length) /= ' ' |
| loop |
| Length := Length + 1; |
| end loop; |
| |
| if Length = Index + 1 then |
| P := Parameter_None; |
| else |
| case Switches (Length - 1) is |
| when ':' => |
| P := Parameter_With_Optional_Space; |
| Length := Length - 1; |
| when '=' => |
| P := Parameter_With_Space_Or_Equal; |
| Length := Length - 1; |
| when '!' => |
| P := Parameter_No_Space; |
| Length := Length - 1; |
| when '?' => |
| P := Parameter_Optional; |
| Length := Length - 1; |
| when others => |
| P := Parameter_None; |
| end case; |
| end if; |
| |
| -- If it is the one we searched, it may be a candidate |
| |
| if Arg'First + Length - 1 - Index <= Arg'Last |
| and then Switches (Index .. Length - 1) = |
| Arg (Arg'First .. Arg'First + Length - 1 - Index) |
| and then Length - Index > Switch_Length |
| then |
| Param := P; |
| Index_In_Switches := Index; |
| Switch_Length := Length - Index; |
| end if; |
| |
| -- Look for the next switch in Switches |
| |
| while Index <= Switches'Last |
| and then Switches (Index) /= ' ' |
| loop |
| Index := Index + 1; |
| end loop; |
| |
| Index := Index + 1; |
| end loop; |
| end Find_Longest_Matching_Switch; |
| |
| ------------ |
| -- Getopt -- |
| ------------ |
| |
| function Getopt |
| (Switches : String; |
| Concatenate : Boolean := True; |
| Parser : Opt_Parser := Command_Line_Parser) return Character |
| is |
| Dummy : Boolean; |
| pragma Unreferenced (Dummy); |
| |
| begin |
| <<Restart>> |
| |
| -- If we have finished parsing the current command line item (there |
| -- might be multiple switches in a single item), then go to the next |
| -- element |
| |
| if Parser.Current_Argument > Parser.Arg_Count |
| or else (Parser.Current_Index > |
| Argument (Parser, Parser.Current_Argument)'Last |
| and then not Goto_Next_Argument_In_Section (Parser)) |
| then |
| return ASCII.NUL; |
| end if; |
| |
| -- By default, the switch will not have a parameter |
| |
| Parser.The_Parameter := |
| (Integer'Last, Integer'Last, Integer'Last - 1, ASCII.NUL); |
| Parser.The_Separator := ASCII.NUL; |
| |
| declare |
| Arg : constant String := |
| Argument (Parser, Parser.Current_Argument); |
| Index_Switches : Natural := 0; |
| Max_Length : Natural := 0; |
| End_Index : Natural; |
| Param : Switch_Parameter_Type; |
| begin |
| -- If we are on a new item, test if this might be a switch |
| |
| if Parser.Current_Index = Arg'First then |
| if Arg (Arg'First) /= Parser.Switch_Character then |
| |
| -- If it isn't a switch, return it immediately. We also know it |
| -- isn't the parameter to a previous switch, since that has |
| -- already been handled |
| |
| if Switches (Switches'First) = '*' then |
| Set_Parameter |
| (Parser.The_Switch, |
| Arg_Num => Parser.Current_Argument, |
| First => Arg'First, |
| Last => Arg'Last); |
| Parser.Is_Switch (Parser.Current_Argument) := True; |
| Dummy := Goto_Next_Argument_In_Section (Parser); |
| return '*'; |
| end if; |
| |
| if Parser.Stop_At_First then |
| Parser.Current_Argument := Positive'Last; |
| return ASCII.NUL; |
| |
| elsif not Goto_Next_Argument_In_Section (Parser) then |
| return ASCII.NUL; |
| |
| else |
| -- Recurse to get the next switch on the command line |
| |
| goto Restart; |
| end if; |
| end if; |
| |
| -- We are on the first character of a new command line argument, |
| -- which starts with Switch_Character. Further analysis is needed. |
| |
| Parser.Current_Index := Parser.Current_Index + 1; |
| Parser.Is_Switch (Parser.Current_Argument) := True; |
| end if; |
| |
| Find_Longest_Matching_Switch |
| (Switches => Switches, |
| Arg => Arg (Parser.Current_Index .. Arg'Last), |
| Index_In_Switches => Index_Switches, |
| Switch_Length => Max_Length, |
| Param => Param); |
| |
| -- If switch is not accepted, it is either invalid or is returned |
| -- in the context of '*'. |
| |
| if Index_Switches = 0 then |
| |
| -- Depending on the value of Concatenate, the full switch is |
| -- a single character or the rest of the argument. |
| |
| if Concatenate then |
| End_Index := Parser.Current_Index; |
| else |
| End_Index := Arg'Last; |
| end if; |
| |
| if Switches (Switches'First) = '*' then |
| |
| -- Always prepend the switch character, so that users know that |
| -- this comes from a switch on the command line. This is |
| -- especially important when Concatenate is False, since |
| -- otherwise the current argument first character is lost. |
| |
| Set_Parameter |
| (Parser.The_Switch, |
| Arg_Num => Parser.Current_Argument, |
| First => Parser.Current_Index, |
| Last => Arg'Last, |
| Extra => Parser.Switch_Character); |
| Parser.Is_Switch (Parser.Current_Argument) := True; |
| Dummy := Goto_Next_Argument_In_Section (Parser); |
| return '*'; |
| end if; |
| |
| Set_Parameter |
| (Parser.The_Switch, |
| Arg_Num => Parser.Current_Argument, |
| First => Parser.Current_Index, |
| Last => End_Index); |
| Parser.Current_Index := End_Index + 1; |
| raise Invalid_Switch; |
| end if; |
| |
| End_Index := Parser.Current_Index + Max_Length - 1; |
| Set_Parameter |
| (Parser.The_Switch, |
| Arg_Num => Parser.Current_Argument, |
| First => Parser.Current_Index, |
| Last => End_Index); |
| |
| case Param is |
| when Parameter_With_Optional_Space => |
| if End_Index < Arg'Last then |
| Set_Parameter |
| (Parser.The_Parameter, |
| Arg_Num => Parser.Current_Argument, |
| First => End_Index + 1, |
| Last => Arg'Last); |
| Dummy := Goto_Next_Argument_In_Section (Parser); |
| |
| elsif Parser.Current_Argument < Parser.Arg_Count |
| and then Parser.Section (Parser.Current_Argument + 1) /= 0 |
| then |
| Parser.Current_Argument := Parser.Current_Argument + 1; |
| Parser.The_Separator := ' '; |
| Set_Parameter |
| (Parser.The_Parameter, |
| Arg_Num => Parser.Current_Argument, |
| First => Argument (Parser, Parser.Current_Argument)'First, |
| Last => Argument (Parser, Parser.Current_Argument)'Last); |
| Parser.Is_Switch (Parser.Current_Argument) := True; |
| Dummy := Goto_Next_Argument_In_Section (Parser); |
| |
| else |
| Parser.Current_Index := End_Index + 1; |
| raise Invalid_Parameter; |
| end if; |
| |
| when Parameter_With_Space_Or_Equal => |
| |
| -- If the switch is of the form <switch>=xxx |
| |
| if End_Index < Arg'Last then |
| |
| if Arg (End_Index + 1) = '=' |
| and then End_Index + 1 < Arg'Last |
| then |
| Parser.The_Separator := '='; |
| Set_Parameter |
| (Parser.The_Parameter, |
| Arg_Num => Parser.Current_Argument, |
| First => End_Index + 2, |
| Last => Arg'Last); |
| Dummy := Goto_Next_Argument_In_Section (Parser); |
| else |
| Parser.Current_Index := End_Index + 1; |
| raise Invalid_Parameter; |
| end if; |
| |
| -- If the switch is of the form <switch> xxx |
| |
| elsif Parser.Current_Argument < Parser.Arg_Count |
| and then Parser.Section (Parser.Current_Argument + 1) /= 0 |
| then |
| Parser.Current_Argument := Parser.Current_Argument + 1; |
| Parser.The_Separator := ' '; |
| Set_Parameter |
| (Parser.The_Parameter, |
| Arg_Num => Parser.Current_Argument, |
| First => Argument (Parser, Parser.Current_Argument)'First, |
| Last => Argument (Parser, Parser.Current_Argument)'Last); |
| Parser.Is_Switch (Parser.Current_Argument) := True; |
| Dummy := Goto_Next_Argument_In_Section (Parser); |
| |
| else |
| Parser.Current_Index := End_Index + 1; |
| raise Invalid_Parameter; |
| end if; |
| |
| when Parameter_No_Space => |
| |
| if End_Index < Arg'Last then |
| Set_Parameter |
| (Parser.The_Parameter, |
| Arg_Num => Parser.Current_Argument, |
| First => End_Index + 1, |
| Last => Arg'Last); |
| Dummy := Goto_Next_Argument_In_Section (Parser); |
| |
| else |
| Parser.Current_Index := End_Index + 1; |
| raise Invalid_Parameter; |
| end if; |
| |
| when Parameter_Optional => |
| |
| if End_Index < Arg'Last then |
| Set_Parameter |
| (Parser.The_Parameter, |
| Arg_Num => Parser.Current_Argument, |
| First => End_Index + 1, |
| Last => Arg'Last); |
| end if; |
| |
| Dummy := Goto_Next_Argument_In_Section (Parser); |
| |
| when Parameter_None => |
| |
| if Concatenate or else End_Index = Arg'Last then |
| Parser.Current_Index := End_Index + 1; |
| |
| else |
| -- If Concatenate is False and the full argument is not |
| -- recognized as a switch, this is an invalid switch. |
| |
| if Switches (Switches'First) = '*' then |
| Set_Parameter |
| (Parser.The_Switch, |
| Arg_Num => Parser.Current_Argument, |
| First => Arg'First, |
| Last => Arg'Last); |
| Parser.Is_Switch (Parser.Current_Argument) := True; |
| Dummy := Goto_Next_Argument_In_Section (Parser); |
| return '*'; |
| end if; |
| |
| Set_Parameter |
| (Parser.The_Switch, |
| Arg_Num => Parser.Current_Argument, |
| First => Parser.Current_Index, |
| Last => Arg'Last); |
| Parser.Current_Index := Arg'Last + 1; |
| raise Invalid_Switch; |
| end if; |
| end case; |
| |
| return Switches (Index_Switches); |
| end; |
| end Getopt; |
| |
| ----------------------------------- |
| -- Goto_Next_Argument_In_Section -- |
| ----------------------------------- |
| |
| function Goto_Next_Argument_In_Section |
| (Parser : Opt_Parser) return Boolean |
| is |
| begin |
| Parser.Current_Argument := Parser.Current_Argument + 1; |
| |
| if Parser.Current_Argument > Parser.Arg_Count |
| or else Parser.Section (Parser.Current_Argument) = 0 |
| then |
| loop |
| Parser.Current_Argument := Parser.Current_Argument + 1; |
| |
| if Parser.Current_Argument > Parser.Arg_Count then |
| Parser.Current_Index := 1; |
| return False; |
| end if; |
| |
| exit when Parser.Section (Parser.Current_Argument) = |
| Parser.Current_Section; |
| end loop; |
| end if; |
| |
| Parser.Current_Index := |
| Argument (Parser, Parser.Current_Argument)'First; |
| |
| return True; |
| end Goto_Next_Argument_In_Section; |
| |
| ------------------ |
| -- Goto_Section -- |
| ------------------ |
| |
| procedure Goto_Section |
| (Name : String := ""; |
| Parser : Opt_Parser := Command_Line_Parser) |
| is |
| Index : Integer; |
| |
| begin |
| Parser.In_Expansion := False; |
| |
| if Name = "" then |
| Parser.Current_Argument := 1; |
| Parser.Current_Index := 1; |
| Parser.Current_Section := 1; |
| return; |
| end if; |
| |
| Index := 1; |
| while Index <= Parser.Arg_Count loop |
| if Parser.Section (Index) = 0 |
| and then Argument (Parser, Index) = Parser.Switch_Character & Name |
| then |
| Parser.Current_Argument := Index + 1; |
| Parser.Current_Index := 1; |
| |
| if Parser.Current_Argument <= Parser.Arg_Count then |
| Parser.Current_Section := |
| Parser.Section (Parser.Current_Argument); |
| end if; |
| return; |
| end if; |
| |
| Index := Index + 1; |
| end loop; |
| |
| Parser.Current_Argument := Positive'Last; |
| Parser.Current_Index := 2; -- so that Get_Argument returns nothing |
| end Goto_Section; |
| |
| ---------------------------- |
| -- Initialize_Option_Scan -- |
| ---------------------------- |
| |
| procedure Initialize_Option_Scan |
| (Switch_Char : Character := '-'; |
| Stop_At_First_Non_Switch : Boolean := False; |
| Section_Delimiters : String := "") |
| is |
| begin |
| Internal_Initialize_Option_Scan |
| (Parser => Command_Line_Parser, |
| Switch_Char => Switch_Char, |
| Stop_At_First_Non_Switch => Stop_At_First_Non_Switch, |
| Section_Delimiters => Section_Delimiters); |
| end Initialize_Option_Scan; |
| |
| ---------------------------- |
| -- Initialize_Option_Scan -- |
| ---------------------------- |
| |
| procedure Initialize_Option_Scan |
| (Parser : out Opt_Parser; |
| Command_Line : GNAT.OS_Lib.Argument_List_Access; |
| Switch_Char : Character := '-'; |
| Stop_At_First_Non_Switch : Boolean := False; |
| Section_Delimiters : String := "") |
| is |
| begin |
| Free (Parser); |
| |
| if Command_Line = null then |
| Parser := new Opt_Parser_Data (CL.Argument_Count); |
| Initialize_Option_Scan |
| (Switch_Char => Switch_Char, |
| Stop_At_First_Non_Switch => Stop_At_First_Non_Switch, |
| Section_Delimiters => Section_Delimiters); |
| else |
| Parser := new Opt_Parser_Data (Command_Line'Length); |
| Parser.Arguments := Command_Line; |
| Internal_Initialize_Option_Scan |
| (Parser => Parser, |
| Switch_Char => Switch_Char, |
| Stop_At_First_Non_Switch => Stop_At_First_Non_Switch, |
| Section_Delimiters => Section_Delimiters); |
| end if; |
| end Initialize_Option_Scan; |
| |
| ------------------------------------- |
| -- Internal_Initialize_Option_Scan -- |
| ------------------------------------- |
| |
| procedure Internal_Initialize_Option_Scan |
| (Parser : Opt_Parser; |
| Switch_Char : Character; |
| Stop_At_First_Non_Switch : Boolean; |
| Section_Delimiters : String) |
| is |
| Section_Num : Section_Number; |
| Section_Index : Integer; |
| Last : Integer; |
| Delimiter_Found : Boolean; |
| |
| Discard : Boolean; |
| pragma Warnings (Off, Discard); |
| |
| begin |
| Parser.Current_Argument := 0; |
| Parser.Current_Index := 0; |
| Parser.In_Expansion := False; |
| Parser.Switch_Character := Switch_Char; |
| Parser.Stop_At_First := Stop_At_First_Non_Switch; |
| |
| -- If we are using sections, we have to preprocess the command line |
| -- to delimit them. A section can be repeated, so we just give each |
| -- item on the command line a section number |
| |
| Section_Num := 1; |
| Section_Index := Section_Delimiters'First; |
| while Section_Index <= Section_Delimiters'Last loop |
| Last := Section_Index; |
| while Last <= Section_Delimiters'Last |
| and then Section_Delimiters (Last) /= ' ' |
| loop |
| Last := Last + 1; |
| end loop; |
| |
| Delimiter_Found := False; |
| Section_Num := Section_Num + 1; |
| |
| for Index in 1 .. Parser.Arg_Count loop |
| if Argument (Parser, Index)(1) = Parser.Switch_Character |
| and then |
| Argument (Parser, Index) = Parser.Switch_Character & |
| Section_Delimiters |
| (Section_Index .. Last - 1) |
| then |
| Parser.Section (Index) := 0; |
| Delimiter_Found := True; |
| |
| elsif Parser.Section (Index) = 0 then |
| Delimiter_Found := False; |
| |
| elsif Delimiter_Found then |
| Parser.Section (Index) := Section_Num; |
| end if; |
| end loop; |
| |
| Section_Index := Last + 1; |
| while Section_Index <= Section_Delimiters'Last |
| and then Section_Delimiters (Section_Index) = ' ' |
| loop |
| Section_Index := Section_Index + 1; |
| end loop; |
| end loop; |
| |
| Discard := Goto_Next_Argument_In_Section (Parser); |
| end Internal_Initialize_Option_Scan; |
| |
| --------------- |
| -- Parameter -- |
| --------------- |
| |
| function Parameter |
| (Parser : Opt_Parser := Command_Line_Parser) return String |
| is |
| begin |
| if Parser.The_Parameter.First > Parser.The_Parameter.Last then |
| return String'(1 .. 0 => ' '); |
| else |
| return Argument (Parser, Parser.The_Parameter.Arg_Num) |
| (Parser.The_Parameter.First .. Parser.The_Parameter.Last); |
| end if; |
| end Parameter; |
| |
| --------------- |
| -- Separator -- |
| --------------- |
| |
| function Separator |
| (Parser : Opt_Parser := Command_Line_Parser) return Character |
| is |
| begin |
| return Parser.The_Separator; |
| end Separator; |
| |
| ------------------- |
| -- Set_Parameter -- |
| ------------------- |
| |
| procedure Set_Parameter |
| (Variable : out Parameter_Type; |
| Arg_Num : Positive; |
| First : Positive; |
| Last : Positive; |
| Extra : Character := ASCII.NUL) |
| is |
| begin |
| Variable.Arg_Num := Arg_Num; |
| Variable.First := First; |
| Variable.Last := Last; |
| Variable.Extra := Extra; |
| end Set_Parameter; |
| |
| --------------------- |
| -- Start_Expansion -- |
| --------------------- |
| |
| procedure Start_Expansion |
| (Iterator : out Expansion_Iterator; |
| Pattern : String; |
| Directory : String := ""; |
| Basic_Regexp : Boolean := True) |
| is |
| Directory_Separator : Character; |
| pragma Import (C, Directory_Separator, "__gnat_dir_separator"); |
| |
| First : Positive := Pattern'First; |
| Pat : String := Pattern; |
| |
| begin |
| Canonical_Case_File_Name (Pat); |
| Iterator.Current_Depth := 1; |
| |
| -- If Directory is unspecified, use the current directory ("./" or ".\") |
| |
| if Directory = "" then |
| Iterator.Dir_Name (1 .. 2) := "." & Directory_Separator; |
| Iterator.Start := 3; |
| |
| else |
| Iterator.Dir_Name (1 .. Directory'Length) := Directory; |
| Iterator.Start := Directory'Length + 1; |
| Canonical_Case_File_Name (Iterator.Dir_Name (1 .. Directory'Length)); |
| |
| -- Make sure that the last character is a directory separator |
| |
| if Directory (Directory'Last) /= Directory_Separator then |
| Iterator.Dir_Name (Iterator.Start) := Directory_Separator; |
| Iterator.Start := Iterator.Start + 1; |
| end if; |
| end if; |
| |
| Iterator.Levels (1).Name_Last := Iterator.Start - 1; |
| |
| -- Open the initial Directory, at depth 1 |
| |
| GNAT.Directory_Operations.Open |
| (Iterator.Levels (1).Dir, Iterator.Dir_Name (1 .. Iterator.Start - 1)); |
| |
| -- If in the current directory and the pattern starts with "./" or ".\", |
| -- drop the "./" or ".\" from the pattern. |
| |
| if Directory = "" and then Pat'Length > 2 |
| and then Pat (Pat'First) = '.' |
| and then Pat (Pat'First + 1) = Directory_Separator |
| then |
| First := Pat'First + 2; |
| end if; |
| |
| Iterator.Regexp := |
| GNAT.Regexp.Compile (Pat (First .. Pat'Last), Basic_Regexp, True); |
| |
| Iterator.Maximum_Depth := 1; |
| |
| -- Maximum_Depth is equal to 1 plus the number of directory separators |
| -- in the pattern. |
| |
| for Index in First .. Pat'Last loop |
| if Pat (Index) = Directory_Separator then |
| Iterator.Maximum_Depth := Iterator.Maximum_Depth + 1; |
| exit when Iterator.Maximum_Depth = Max_Depth; |
| end if; |
| end loop; |
| end Start_Expansion; |
| |
| ---------- |
| -- Free -- |
| ---------- |
| |
| procedure Free (Parser : in out Opt_Parser) is |
| procedure Unchecked_Free is new Ada.Unchecked_Deallocation |
| (Opt_Parser_Data, Opt_Parser); |
| begin |
| if Parser /= null |
| and then Parser /= Command_Line_Parser |
| then |
| Free (Parser.Arguments); |
| Unchecked_Free (Parser); |
| end if; |
| end Free; |
| |
| ------------------ |
| -- Define_Alias -- |
| ------------------ |
| |
| procedure Define_Alias |
| (Config : in out Command_Line_Configuration; |
| Switch : String; |
| Expanded : String) |
| is |
| begin |
| if Config = null then |
| Config := new Command_Line_Configuration_Record; |
| end if; |
| |
| Add (Config.Aliases, new String'(Switch)); |
| Add (Config.Expansions, new String'(Expanded)); |
| end Define_Alias; |
| |
| ------------------- |
| -- Define_Prefix -- |
| ------------------- |
| |
| procedure Define_Prefix |
| (Config : in out Command_Line_Configuration; |
| Prefix : String) |
| is |
| begin |
| if Config = null then |
| Config := new Command_Line_Configuration_Record; |
| end if; |
| |
| Add (Config.Prefixes, new String'(Prefix)); |
| end Define_Prefix; |
| |
| ------------------- |
| -- Define_Switch -- |
| ------------------- |
| |
| procedure Define_Switch |
| (Config : in out Command_Line_Configuration; |
| Switch : String) |
| is |
| begin |
| if Config = null then |
| Config := new Command_Line_Configuration_Record; |
| end if; |
| |
| Add (Config.Switches, new String'(Switch)); |
| end Define_Switch; |
| |
| -------------------- |
| -- Define_Section -- |
| -------------------- |
| |
| procedure Define_Section |
| (Config : in out Command_Line_Configuration; |
| Section : String) |
| is |
| begin |
| if Config = null then |
| Config := new Command_Line_Configuration_Record; |
| end if; |
| |
| Add (Config.Sections, new String'(Section)); |
| end Define_Section; |
| |
| ------------------ |
| -- Get_Switches -- |
| ------------------ |
| |
| function Get_Switches |
| (Config : Command_Line_Configuration; |
| Switch_Char : Character) |
| return String |
| is |
| Ret : Ada.Strings.Unbounded.Unbounded_String; |
| use type Ada.Strings.Unbounded.Unbounded_String; |
| |
| begin |
| if Config = null or else Config.Switches = null then |
| return ""; |
| end if; |
| |
| for J in Config.Switches'Range loop |
| if Config.Switches (J) (Config.Switches (J)'First) = Switch_Char then |
| Ret := |
| Ret & " " & |
| Config.Switches (J) |
| (Config.Switches (J)'First + 1 .. Config.Switches (J)'Last); |
| else |
| Ret := Ret & " " & Config.Switches (J).all; |
| end if; |
| end loop; |
| |
| return Ada.Strings.Unbounded.To_String (Ret); |
| end Get_Switches; |
| |
| ----------------------- |
| -- Set_Configuration -- |
| ----------------------- |
| |
| procedure Set_Configuration |
| (Cmd : in out Command_Line; |
| Config : Command_Line_Configuration) |
| is |
| begin |
| Cmd.Config := Config; |
| end Set_Configuration; |
| |
| ----------------------- |
| -- Get_Configuration -- |
| ----------------------- |
| |
| function Get_Configuration |
| (Cmd : Command_Line) return Command_Line_Configuration is |
| begin |
| return Cmd.Config; |
| end Get_Configuration; |
| |
| ---------------------- |
| -- Set_Command_Line -- |
| ---------------------- |
| |
| procedure Set_Command_Line |
| (Cmd : in out Command_Line; |
| Switches : String; |
| Getopt_Description : String := ""; |
| Switch_Char : Character := '-') |
| is |
| Tmp : Argument_List_Access; |
| Parser : Opt_Parser; |
| S : Character; |
| Section : String_Access := null; |
| |
| function Real_Full_Switch |
| (S : Character; |
| Parser : Opt_Parser) return String; |
| -- Ensure that the returned switch value contains the |
| -- Switch_Char prefix if needed. |
| |
| ---------------------- |
| -- Real_Full_Switch -- |
| ---------------------- |
| |
| function Real_Full_Switch |
| (S : Character; |
| Parser : Opt_Parser) return String |
| is |
| begin |
| if S = '*' then |
| return Full_Switch (Parser); |
| else |
| return Switch_Char & Full_Switch (Parser); |
| end if; |
| end Real_Full_Switch; |
| |
| -- Start of processing for Set_Command_Line |
| |
| begin |
| Free (Cmd.Expanded); |
| Free (Cmd.Params); |
| |
| if Switches /= "" then |
| Tmp := Argument_String_To_List (Switches); |
| Initialize_Option_Scan (Parser, Tmp, Switch_Char); |
| |
| loop |
| begin |
| S := Getopt (Switches => "* " & Getopt_Description, |
| Concatenate => False, |
| Parser => Parser); |
| exit when S = ASCII.NUL; |
| |
| declare |
| Sw : constant String := |
| Real_Full_Switch (S, Parser); |
| Is_Section : Boolean := False; |
| |
| begin |
| if Cmd.Config /= null |
| and then Cmd.Config.Sections /= null |
| then |
| Section_Search : |
| for S in Cmd.Config.Sections'Range loop |
| if Sw = Cmd.Config.Sections (S).all then |
| Section := Cmd.Config.Sections (S); |
| Is_Section := True; |
| |
| exit Section_Search; |
| end if; |
| end loop Section_Search; |
| end if; |
| |
| if not Is_Section then |
| if Section = null then |
| |
| -- Work around some weird cases: some switches may |
| -- expect parameters, but have the same value as |
| -- longer switches: -gnaty3 (-gnaty, parameter=3) and |
| -- -gnatya (-gnatya, no parameter). |
| |
| -- So we are calling add_switch here with parameter |
| -- attached. This will be anyway correctly handled by |
| -- Add_Switch if -gnaty3 is actually provided. |
| |
| if Separator (Parser) = ASCII.NUL then |
| Add_Switch |
| (Cmd, Sw & Parameter (Parser), ""); |
| else |
| Add_Switch |
| (Cmd, Sw, Parameter (Parser), Separator (Parser)); |
| end if; |
| else |
| if Separator (Parser) = ASCII.NUL then |
| Add_Switch |
| (Cmd, Sw & Parameter (Parser), "", |
| Separator (Parser), |
| Section.all); |
| else |
| Add_Switch |
| (Cmd, Sw, |
| Parameter (Parser), |
| Separator (Parser), |
| Section.all); |
| end if; |
| end if; |
| end if; |
| end; |
| |
| exception |
| when Invalid_Parameter => |
| |
| -- Add it with no parameter, if that's the way the user |
| -- wants it. |
| |
| -- Specify the separator in all cases, as the switch might |
| -- need to be unaliased, and the alias might contain |
| -- switches with parameters. |
| |
| if Section = null then |
| Add_Switch |
| (Cmd, Switch_Char & Full_Switch (Parser), |
| Separator => Separator (Parser)); |
| else |
| Add_Switch |
| (Cmd, Switch_Char & Full_Switch (Parser), |
| Separator => Separator (Parser), |
| Section => Section.all); |
| end if; |
| end; |
| end loop; |
| |
| Free (Parser); |
| end if; |
| end Set_Command_Line; |
| |
| ---------------- |
| -- Looking_At -- |
| ---------------- |
| |
| function Looking_At |
| (Type_Str : String; |
| Index : Natural; |
| Substring : String) return Boolean is |
| begin |
| return Index + Substring'Length - 1 <= Type_Str'Last |
| and then Type_Str (Index .. Index + Substring'Length - 1) = Substring; |
| end Looking_At; |
| |
| ------------------------ |
| -- Can_Have_Parameter -- |
| ------------------------ |
| |
| function Can_Have_Parameter (S : String) return Boolean is |
| begin |
| if S'Length <= 1 then |
| return False; |
| end if; |
| |
| case S (S'Last) is |
| when '!' | ':' | '?' | '=' => |
| return True; |
| when others => |
| return False; |
| end case; |
| end Can_Have_Parameter; |
| |
| ----------------------- |
| -- Require_Parameter -- |
| ----------------------- |
| |
| function Require_Parameter (S : String) return Boolean is |
| begin |
| if S'Length <= 1 then |
| return False; |
| end if; |
| |
| case S (S'Last) is |
| when '!' | ':' | '=' => |
| return True; |
| when others => |
| return False; |
| end case; |
| end Require_Parameter; |
| |
| ------------------- |
| -- Actual_Switch -- |
| ------------------- |
| |
| function Actual_Switch (S : String) return String is |
| begin |
| if S'Length <= 1 then |
| return S; |
| end if; |
| |
| case S (S'Last) is |
| when '!' | ':' | '?' | '=' => |
| return S (S'First .. S'Last - 1); |
| when others => |
| return S; |
| end case; |
| end Actual_Switch; |
| |
| ---------------------------- |
| -- For_Each_Simple_Switch -- |
| ---------------------------- |
| |
| procedure For_Each_Simple_Switch |
| (Cmd : Command_Line; |
| Switch : String; |
| Parameter : String := ""; |
| Unalias : Boolean := True) |
| is |
| function Group_Analysis |
| (Prefix : String; |
| Group : String) return Boolean; |
| -- Perform the analysis of a group of switches. |
| |
| -------------------- |
| -- Group_Analysis -- |
| -------------------- |
| |
| function Group_Analysis |
| (Prefix : String; |
| Group : String) return Boolean |
| is |
| Idx : Natural; |
| Found : Boolean; |
| |
| begin |
| Idx := Group'First; |
| while Idx <= Group'Last loop |
| Found := False; |
| |
| for S in Cmd.Config.Switches'Range loop |
| declare |
| Sw : constant String := |
| Actual_Switch |
| (Cmd.Config.Switches (S).all); |
| Full : constant String := |
| Prefix & Group (Idx .. Group'Last); |
| Last : Natural; |
| Param : Natural; |
| |
| begin |
| if Sw'Length >= Prefix'Length |
| |
| -- Verify that sw starts with Prefix |
| |
| and then Looking_At (Sw, Sw'First, Prefix) |
| |
| -- Verify that the group starts with sw |
| |
| and then Looking_At (Full, Full'First, Sw) |
| then |
| Last := Idx + Sw'Length - Prefix'Length - 1; |
| Param := Last + 1; |
| |
| if Can_Have_Parameter (Cmd.Config.Switches (S).all) then |
| |
| -- Include potential parameter to the recursive call. |
| -- Only numbers are allowed. |
| |
| while Last < Group'Last |
| and then Group (Last + 1) in '0' .. '9' |
| loop |
| Last := Last + 1; |
| end loop; |
| end if; |
| |
| if not Require_Parameter (Cmd.Config.Switches (S).all) |
| or else Last >= Param |
| then |
| if Idx = Group'First |
| and then Last = Group'Last |
| and then Last < Param |
| then |
| -- The group only concerns a single switch. Do not |
| -- perform recursive call. |
| |
| -- Note that we still perform a recursive call if |
| -- a parameter is detected in the switch, as this |
| -- is a way to correctly identify such a parameter |
| -- in aliases. |
| |
| return False; |
| end if; |
| |
| Found := True; |
| |
| -- Recursive call, using the detected parameter if any |
| |
| if Last >= Param then |
| For_Each_Simple_Switch |
| (Cmd, |
| Prefix & Group (Idx .. Param - 1), |
| Group (Param .. Last)); |
| else |
| For_Each_Simple_Switch |
| (Cmd, Prefix & Group (Idx .. Last), ""); |
| end if; |
| |
| Idx := Last + 1; |
| exit; |
| end if; |
| end if; |
| end; |
| end loop; |
| |
| if not Found then |
| For_Each_Simple_Switch (Cmd, Prefix & Group (Idx), ""); |
| Idx := Idx + 1; |
| end if; |
| end loop; |
| |
| return True; |
| end Group_Analysis; |
| |
| begin |
| -- Are we adding a switch that can in fact be expanded through aliases ? |
| -- If yes, we add separately each of its expansion. |
| |
| -- This takes care of expansions like "-T" -> "-gnatwrs", where the |
| -- alias and its expansion do not have the same prefix. Given the order |
| -- in which we do things here, the expansion of the alias will itself |
| -- be checked for a common prefix and further split into simple switches |
| |
| if Unalias |
| and then Cmd.Config /= null |
| and then Cmd.Config.Aliases /= null |
| then |
| for A in Cmd.Config.Aliases'Range loop |
| if Cmd.Config.Aliases (A).all = Switch |
| and then Parameter = "" |
| then |
| For_Each_Simple_Switch |
| (Cmd, Cmd.Config.Expansions (A).all, ""); |
| return; |
| end if; |
| end loop; |
| end if; |
| |
| -- Are we adding a switch grouping several switches ? If yes, add each |
| -- of the simple switches instead. |
| |
| if Cmd.Config /= null |
| and then Cmd.Config.Prefixes /= null |
| then |
| for P in Cmd.Config.Prefixes'Range loop |
| if Switch'Length > Cmd.Config.Prefixes (P)'Length + 1 |
| and then Looking_At |
| (Switch, Switch'First, Cmd.Config.Prefixes (P).all) |
| then |
| -- Alias expansion will be done recursively |
| if Cmd.Config.Switches = null then |
| for S in Switch'First + Cmd.Config.Prefixes (P)'Length |
| .. Switch'Last |
| loop |
| For_Each_Simple_Switch |
| (Cmd, Cmd.Config.Prefixes (P).all & Switch (S), ""); |
| end loop; |
| |
| return; |
| |
| elsif Group_Analysis |
| (Cmd.Config.Prefixes (P).all, |
| Switch |
| (Switch'First + Cmd.Config.Prefixes (P)'Length |
| .. Switch'Last)) |
| then |
| -- Recursive calls already done on each switch of the |
| -- group. Let's return to not call Callback. |
| return; |
| end if; |
| end if; |
| end loop; |
| end if; |
| |
| -- Test if added switch is a known switch with parameter attached |
| |
| if Parameter = "" |
| and then Cmd.Config /= null |
| and then Cmd.Config.Switches /= null |
| then |
| for S in Cmd.Config.Switches'Range loop |
| declare |
| Sw : constant String := |
| Actual_Switch (Cmd.Config.Switches (S).all); |
| Last : Natural; |
| Param : Natural; |
| |
| begin |
| -- Verify that switch starts with Sw |
| -- What if the "verification" fails??? |
| |
| if Switch'Length >= Sw'Length |
| and then Looking_At (Switch, Switch'First, Sw) |
| then |
| Param := Switch'First + Sw'Length - 1; |
| Last := Param; |
| |
| if Can_Have_Parameter (Cmd.Config.Switches (S).all) then |
| while Last < Switch'Last |
| and then Switch (Last + 1) in '0' .. '9' |
| loop |
| Last := Last + 1; |
| end loop; |
| end if; |
| |
| -- If full Switch is a known switch with attached parameter |
| -- then we use this parameter in the callback. |
| |
| if Last = Switch'Last then |
| Callback |
| (Switch (Switch'First .. Param), |
| Switch (Param + 1 .. Last)); |
| return; |
| |
| end if; |
| end if; |
| end; |
| end loop; |
| end if; |
| |
| Callback (Switch, Parameter); |
| end For_Each_Simple_Switch; |
| |
| ---------------- |
| -- Add_Switch -- |
| ---------------- |
| |
| procedure Add_Switch |
| (Cmd : in out Command_Line; |
| Switch : String; |
| Parameter : String := ""; |
| Separator : Character := ' '; |
| Section : String := ""; |
| Add_Before : Boolean := False) |
| is |
| Success : Boolean; |
| pragma Unreferenced (Success); |
| begin |
| Add_Switch |
| (Cmd, Switch, Parameter, Separator, Section, Add_Before, Success); |
| end Add_Switch; |
| |
| ---------------- |
| -- Add_Switch -- |
| ---------------- |
| |
| procedure Add_Switch |
| (Cmd : in out Command_Line; |
| Switch : String; |
| Parameter : String := ""; |
| Separator : Character := ' '; |
| Section : String := ""; |
| Add_Before : Boolean := False; |
| Success : out Boolean) |
| is |
| procedure Add_Simple_Switch (Simple : String; Param : String); |
| -- Add a new switch that has had all its aliases expanded, and switches |
| -- ungrouped. We know there are no more aliases in Switches. |
| |
| ----------------------- |
| -- Add_Simple_Switch -- |
| ----------------------- |
| |
| procedure Add_Simple_Switch (Simple : String; Param : String) is |
| begin |
| if Cmd.Expanded = null then |
| Cmd.Expanded := new Argument_List'(1 .. 1 => new String'(Simple)); |
| |
| if Param /= "" then |
| Cmd.Params := new Argument_List' |
| (1 .. 1 => new String'(Separator & Param)); |
| |
| else |
| Cmd.Params := new Argument_List'(1 .. 1 => null); |
| end if; |
| |
| if Section = "" then |
| Cmd.Sections := new Argument_List'(1 .. 1 => null); |
| |
| else |
| Cmd.Sections := new Argument_List' |
| (1 .. 1 => new String'(Section)); |
| end if; |
| |
| else |
| -- Do we already have this switch? |
| |
| for C in Cmd.Expanded'Range loop |
| if Cmd.Expanded (C).all = Simple |
| and then |
| ((Cmd.Params (C) = null and then Param = "") |
| or else |
| (Cmd.Params (C) /= null |
| and then Cmd.Params (C).all = Separator & Param)) |
| and then |
| ((Cmd.Sections (C) = null and then Section = "") |
| or else |
| (Cmd.Sections (C) /= null |
| and then Cmd.Sections (C).all = Section)) |
| then |
| return; |
| end if; |
| end loop; |
| |
| -- Inserting at least one switch |
| |
| Success := True; |
| Add (Cmd.Expanded, new String'(Simple), Add_Before); |
| |
| if Param /= "" then |
| Add |
| (Cmd.Params, |
| new String'(Separator & Param), |
| Add_Before); |
| |
| else |
| Add |
| (Cmd.Params, |
| null, |
| Add_Before); |
| end if; |
| |
| if Section = "" then |
| Add |
| (Cmd.Sections, |
| null, |
| Add_Before); |
| else |
| Add |
| (Cmd.Sections, |
| new String'(Section), |
| Add_Before); |
| end if; |
| end if; |
| end Add_Simple_Switch; |
| |
| procedure Add_Simple_Switches is |
| new For_Each_Simple_Switch (Add_Simple_Switch); |
| |
| -- Start of processing for Add_Switch |
| |
| begin |
| Success := False; |
| Add_Simple_Switches (Cmd, Switch, Parameter); |
| Free (Cmd.Coalesce); |
| end Add_Switch; |
| |
| ------------ |
| -- Remove -- |
| ------------ |
| |
| procedure Remove (Line : in out Argument_List_Access; Index : Integer) is |
| Tmp : Argument_List_Access := Line; |
| |
| begin |
| Line := new Argument_List (Tmp'First .. Tmp'Last - 1); |
| |
| if Index /= Tmp'First then |
| Line (Tmp'First .. Index - 1) := Tmp (Tmp'First .. Index - 1); |
| end if; |
| |
| Free (Tmp (Index)); |
| |
| if Index /= Tmp'Last then |
| Line (Index .. Tmp'Last - 1) := Tmp (Index + 1 .. Tmp'Last); |
| end if; |
| |
| Unchecked_Free (Tmp); |
| end Remove; |
| |
| --------- |
| -- Add -- |
| --------- |
| |
| procedure Add |
| (Line : in out Argument_List_Access; |
| Str : String_Access; |
| Before : Boolean := False) |
| is |
| Tmp : Argument_List_Access := Line; |
| |
| begin |
| if Tmp /= null then |
| Line := new Argument_List (Tmp'First .. Tmp'Last + 1); |
| |
| if Before then |
| Line (Tmp'First) := Str; |
| Line (Tmp'First + 1 .. Tmp'Last + 1) := Tmp.all; |
| else |
| Line (Tmp'Range) := Tmp.all; |
| Line (Tmp'Last + 1) := Str; |
| end if; |
| |
| Unchecked_Free (Tmp); |
| |
| else |
| Line := new Argument_List'(1 .. 1 => Str); |
| end if; |
| end Add; |
| |
| ------------------- |
| -- Remove_Switch -- |
| ------------------- |
| |
| procedure Remove_Switch |
| (Cmd : in out Command_Line; |
| Switch : String; |
| Remove_All : Boolean := False; |
| Has_Parameter : Boolean := False; |
| Section : String := "") |
| is |
| Success : Boolean; |
| pragma Unreferenced (Success); |
| begin |
| Remove_Switch (Cmd, Switch, Remove_All, Has_Parameter, Section, Success); |
| end Remove_Switch; |
| |
| ------------------- |
| -- Remove_Switch -- |
| ------------------- |
| |
| procedure Remove_Switch |
| (Cmd : in out Command_Line; |
| Switch : String; |
| Remove_All : Boolean := False; |
| Has_Parameter : Boolean := False; |
| Section : String := ""; |
| Success : out Boolean) |
| is |
| procedure Remove_Simple_Switch (Simple : String; Param : String); |
| -- Removes a simple switch, with no aliasing or grouping |
| |
| -------------------------- |
| -- Remove_Simple_Switch -- |
| -------------------------- |
| |
| procedure Remove_Simple_Switch (Simple : String; Param : String) is |
| C : Integer; |
| pragma Unreferenced (Param); |
| |
| begin |
| if Cmd.Expanded /= null then |
| C := Cmd.Expanded'First; |
| while C <= Cmd.Expanded'Last loop |
| if Cmd.Expanded (C).all = Simple |
| and then |
| (Remove_All |
| or else (Cmd.Sections (C) = null |
| and then Section = "") |
| or else (Cmd.Sections (C) /= null |
| and then Section = Cmd.Sections (C).all)) |
| and then (not Has_Parameter or else Cmd.Params (C) /= null) |
| then |
| Remove (Cmd.Expanded, C); |
| Remove (Cmd.Params, C); |
| Remove (Cmd.Sections, C); |
| Success := True; |
| |
| if not Remove_All then |
| return; |
| end if; |
| |
| else |
| C := C + 1; |
| end if; |
| end loop; |
| end if; |
| end Remove_Simple_Switch; |
| |
| procedure Remove_Simple_Switches is |
| new For_Each_Simple_Switch (Remove_Simple_Switch); |
| |
| -- Start of processing for Remove_Switch |
| |
| begin |
| Success := False; |
| Remove_Simple_Switches (Cmd, Switch, "", Unalias => not Has_Parameter); |
| Free (Cmd.Coalesce); |
| end Remove_Switch; |
| |
| ------------------- |
| -- Remove_Switch -- |
| ------------------- |
| |
| procedure Remove_Switch |
| (Cmd : in out Command_Line; |
| Switch : String; |
| Parameter : String; |
| Section : String := "") |
| is |
| procedure Remove_Simple_Switch (Simple : String; Param : String); |
| -- Removes a simple switch, with no aliasing or grouping |
| |
| -------------------------- |
| -- Remove_Simple_Switch -- |
| -------------------------- |
| |
| procedure Remove_Simple_Switch (Simple : String; Param : String) is |
| C : Integer; |
| |
| begin |
| if Cmd.Expanded /= null then |
| C := Cmd.Expanded'First; |
| while C <= Cmd.Expanded'Last loop |
| if Cmd.Expanded (C).all = Simple |
| and then |
| ((Cmd.Sections (C) = null |
| and then Section = "") |
| or else |
| (Cmd.Sections (C) /= null |
| and then Section = Cmd.Sections (C).all)) |
| and then |
| ((Cmd.Params (C) = null and then Param = "") |
| or else |
| (Cmd.Params (C) /= null |
| and then |
| |
| -- Ignore the separator stored in Parameter |
| |
| Cmd.Params (C) (Cmd.Params (C)'First + 1 |
| .. Cmd.Params (C)'Last) = |
| Param)) |
| then |
| Remove (Cmd.Expanded, C); |
| Remove (Cmd.Params, C); |
| Remove (Cmd.Sections, C); |
| |
| -- The switch is necessarily unique by construction of |
| -- Add_Switch. |
| |
| return; |
| |
| else |
| C := C + 1; |
| end if; |
| end loop; |
| end if; |
| end Remove_Simple_Switch; |
| |
| procedure Remove_Simple_Switches is |
| new For_Each_Simple_Switch (Remove_Simple_Switch); |
| |
| -- Start of processing for Remove_Switch |
| |
| begin |
| Remove_Simple_Switches (Cmd, Switch, Parameter); |
| Free (Cmd.Coalesce); |
| end Remove_Switch; |
| |
| -------------------- |
| -- Group_Switches -- |
| -------------------- |
| |
| procedure Group_Switches |
| (Cmd : Command_Line; |
| Result : Argument_List_Access; |
| Sections : Argument_List_Access; |
| Params : Argument_List_Access) |
| is |
| function Compatible_Parameter (Param : String_Access) return Boolean; |
| -- True when the parameter can be part of a group |
| |
| -------------------------- |
| -- Compatible_Parameter -- |
| -------------------------- |
| |
| function Compatible_Parameter (Param : String_Access) return Boolean is |
| begin |
| -- No parameter OK |
| |
| if Param = null then |
| return True; |
| |
| -- We need parameters without separators |
| |
| elsif Param (Param'First) /= ASCII.NUL then |
| return False; |
| |
| -- Parameters must be all digits |
| |
| else |
| for J in Param'First + 1 .. Param'Last loop |
| if Param (J) not in '0' .. '9' then |
| return False; |
| end if; |
| end loop; |
| |
| return True; |
| end if; |
| end Compatible_Parameter; |
| |
| -- Local declarations |
| |
| Group : Ada.Strings.Unbounded.Unbounded_String; |
| First : Natural; |
| use type Ada.Strings.Unbounded.Unbounded_String; |
| |
| -- Start of processing for Group_Switches |
| |
| begin |
| if Cmd.Config = null |
| or else Cmd.Config.Prefixes = null |
| then |
| return; |
| end if; |
| |
| for P in Cmd.Config.Prefixes'Range loop |
| Group := Ada.Strings.Unbounded.Null_Unbounded_String; |
| First := 0; |
| |
| for C in Result'Range loop |
| if Result (C) /= null |
| and then Compatible_Parameter (Params (C)) |
| and then Looking_At |
| (Result (C).all, Result (C)'First, Cmd.Config.Prefixes (P).all) |
| then |
| -- If we are still in the same section, group the switches |
| |
| if First = 0 |
| or else |
| (Sections (C) = null |
| and then Sections (First) = null) |
| or else |
| (Sections (C) /= null |
| and then Sections (First) /= null |
| and then Sections (C).all = Sections (First).all) |
| then |
| Group := |
| Group & |
| Result (C) |
| (Result (C)'First + Cmd.Config.Prefixes (P)'Length .. |
| Result (C)'Last); |
| |
| if Params (C) /= null then |
| Group := |
| Group & |
| Params (C) (Params (C)'First + 1 .. Params (C)'Last); |
| Free (Params (C)); |
| end if; |
| |
| if First = 0 then |
| First := C; |
| end if; |
| |
| Free (Result (C)); |
| |
| else |
| -- We changed section: we put the grouped switches to the |
| -- first place, on continue with the new section. |
| |
| Result (First) := |
| new String' |
| (Cmd.Config.Prefixes (P).all & |
| Ada.Strings.Unbounded.To_String (Group)); |
| Group := |
| Ada.Strings.Unbounded.To_Unbounded_String |
| (Result (C) |
| (Result (C)'First + Cmd.Config.Prefixes (P)'Length .. |
| Result (C)'Last)); |
| First := C; |
| end if; |
| end if; |
| end loop; |
| |
| if First > 0 then |
| Result (First) := |
| new String' |
| (Cmd.Config.Prefixes (P).all & |
| Ada.Strings.Unbounded.To_String (Group)); |
| end if; |
| end loop; |
| end Group_Switches; |
| |
| -------------------- |
| -- Alias_Switches -- |
| -------------------- |
| |
| procedure Alias_Switches |
| (Cmd : Command_Line; |
| Result : Argument_List_Access; |
| Params : Argument_List_Access) |
| is |
| Found : Boolean; |
| First : Natural; |
| |
| procedure Check_Cb (Switch : String; Param : String); |
| -- Comment required ??? |
| |
| procedure Remove_Cb (Switch : String; Param : String); |
| -- Comment required ??? |
| |
| -------------- |
| -- Check_Cb -- |
| -------------- |
| |
| procedure Check_Cb (Switch : String; Param : String) is |
| begin |
| if Found then |
| for E in Result'Range loop |
| if Result (E) /= null |
| and then |
| (Params (E) = null |
| or else Params (E) (Params (E)'First + 1 |
| .. Params (E)'Last) = Param) |
| and then Result (E).all = Switch |
| then |
| return; |
| end if; |
| end loop; |
| |
| Found := False; |
| end if; |
| end Check_Cb; |
| |
| --------------- |
| -- Remove_Cb -- |
| --------------- |
| |
| procedure Remove_Cb (Switch : String; Param : String) is |
| begin |
| for E in Result'Range loop |
| if Result (E) /= null |
| and then |
| (Params (E) = null |
| or else Params (E) (Params (E)'First + 1 |
| .. Params (E)'Last) = Param) |
| and then Result (E).all = Switch |
| then |
| if First > E then |
| First := E; |
| end if; |
| Free (Result (E)); |
| Free (Params (E)); |
| return; |
| end if; |
| end loop; |
| end Remove_Cb; |
| |
| procedure Check_All is new For_Each_Simple_Switch (Check_Cb); |
| procedure Remove_All is new For_Each_Simple_Switch (Remove_Cb); |
| |
| -- Start of processing for Alias_Switches |
| |
| begin |
| if Cmd.Config = null |
| or else Cmd.Config.Aliases = null |
| then |
| return; |
| end if; |
| |
| for A in Cmd.Config.Aliases'Range loop |
| |
| -- Compute the various simple switches that make up the alias. We |
| -- split the expansion into as many simple switches as possible, and |
| -- then check whether the expanded command line has all of them. |
| |
| Found := True; |
| Check_All (Cmd, Cmd.Config.Expansions (A).all); |
| |
| if Found then |
| First := Integer'Last; |
| Remove_All (Cmd, Cmd.Config.Expansions (A).all); |
| Result (First) := new String'(Cmd.Config.Aliases (A).all); |
| end if; |
| end loop; |
| end Alias_Switches; |
| |
| ------------------- |
| -- Sort_Sections -- |
| ------------------- |
| |
| procedure Sort_Sections |
| (Line : GNAT.OS_Lib.Argument_List_Access; |
| Sections : GNAT.OS_Lib.Argument_List_Access; |
| Params : GNAT.OS_Lib.Argument_List_Access) |
| is |
| Sections_List : Argument_List_Access := |
| new Argument_List'(1 .. 1 => null); |
| Found : Boolean; |
| Old_Line : constant Argument_List := Line.all; |
| Old_Sections : constant Argument_List := Sections.all; |
| Old_Params : constant Argument_List := Params.all; |
| Index : Natural; |
| |
| begin |
| if Line = null then |
| return; |
| end if; |
| |
| -- First construct a list of all sections |
| |
| for E in Line'Range loop |
| if Sections (E) /= null then |
| Found := False; |
| for S in Sections_List'Range loop |
| if (Sections_List (S) = null and then Sections (E) = null) |
| or else |
| (Sections_List (S) /= null |
| and then Sections (E) /= null |
| and then Sections_List (S).all = Sections (E).all) |
| then |
| Found := True; |
| exit; |
| end if; |
| end loop; |
| |
| if not Found then |
| Add (Sections_List, Sections (E)); |
| end if; |
| end if; |
| end loop; |
| |
| Index := Line'First; |
| |
| for S in Sections_List'Range loop |
| for E in Old_Line'Range loop |
| if (Sections_List (S) = null and then Old_Sections (E) = null) |
| or else |
| (Sections_List (S) /= null |
| and then Old_Sections (E) /= null |
| and then Sections_List (S).all = Old_Sections (E).all) |
| then |
| Line (Index) := Old_Line (E); |
| Sections (Index) := Old_Sections (E); |
| Params (Index) := Old_Params (E); |
| Index := Index + 1; |
| end if; |
| end loop; |
| end loop; |
| end Sort_Sections; |
| |
| ----------- |
| -- Start -- |
| ----------- |
| |
| procedure Start |
| (Cmd : in out Command_Line; |
| Iter : in out Command_Line_Iterator; |
| Expanded : Boolean) |
| is |
| begin |
| if Cmd.Expanded = null then |
| Iter.List := null; |
| return; |
| end if; |
| |
| -- Reorder the expanded line so that sections are grouped |
| |
| Sort_Sections (Cmd.Expanded, Cmd.Sections, Cmd.Params); |
| |
| -- Coalesce the switches as much as possible |
| |
| if not Expanded |
| and then Cmd.Coalesce = null |
| then |
| Cmd.Coalesce := new Argument_List (Cmd.Expanded'Range); |
| for E in Cmd.Expanded'Range loop |
| Cmd.Coalesce (E) := new String'(Cmd.Expanded (E).all); |
| end loop; |
| |
| Cmd.Coalesce_Sections := new Argument_List (Cmd.Sections'Range); |
| for E in Cmd.Sections'Range loop |
| if Cmd.Sections (E) = null then |
| Cmd.Coalesce_Sections (E) := null; |
| else |
| Cmd.Coalesce_Sections (E) := new String'(Cmd.Sections (E).all); |
| end if; |
| end loop; |
| |
| Cmd.Coalesce_Params := new Argument_List (Cmd.Params'Range); |
| for E in Cmd.Params'Range loop |
| if Cmd.Params (E) = null then |
| Cmd.Coalesce_Params (E) := null; |
| else |
| Cmd.Coalesce_Params (E) := new String'(Cmd.Params (E).all); |
| end if; |
| end loop; |
| |
| -- Not a clone, since we will not modify the parameters anyway |
| |
| Alias_Switches (Cmd, Cmd.Coalesce, Cmd.Coalesce_Params); |
| Group_Switches |
| (Cmd, Cmd.Coalesce, Cmd.Coalesce_Sections, Cmd.Coalesce_Params); |
| end if; |
| |
| if Expanded then |
| Iter.List := Cmd.Expanded; |
| Iter.Params := Cmd.Params; |
| Iter.Sections := Cmd.Sections; |
| else |
| Iter.List := Cmd.Coalesce; |
| Iter.Params := Cmd.Coalesce_Params; |
| Iter.Sections := Cmd.Coalesce_Sections; |
| end if; |
| |
| if Iter.List = null then |
| Iter.Current := Integer'Last; |
| else |
| Iter.Current := Iter.List'First; |
| |
| while Iter.Current <= Iter.List'Last |
| and then Iter.List (Iter.Current) = null |
| loop |
| Iter.Current := Iter.Current + 1; |
| end loop; |
| end if; |
| end Start; |
| |
| -------------------- |
| -- Current_Switch -- |
| -------------------- |
| |
| function Current_Switch (Iter : Command_Line_Iterator) return String is |
| begin |
| return Iter.List (Iter.Current).all; |
| end Current_Switch; |
| |
| -------------------- |
| -- Is_New_Section -- |
| -------------------- |
| |
| function Is_New_Section (Iter : Command_Line_Iterator) return Boolean is |
| Section : constant String := Current_Section (Iter); |
| begin |
| if Iter.Sections = null then |
| return False; |
| elsif Iter.Current = Iter.Sections'First |
| or else Iter.Sections (Iter.Current - 1) = null |
| then |
| return Section /= ""; |
| end if; |
| |
| return Section /= Iter.Sections (Iter.Current - 1).all; |
| end Is_New_Section; |
| |
| --------------------- |
| -- Current_Section -- |
| --------------------- |
| |
| function Current_Section (Iter : Command_Line_Iterator) return String is |
| begin |
| if Iter.Sections = null |
| or else Iter.Current > Iter.Sections'Last |
| or else Iter.Sections (Iter.Current) = null |
| then |
| return ""; |
| end if; |
| |
| return Iter.Sections (Iter.Current).all; |
| end Current_Section; |
| |
| ----------------------- |
| -- Current_Separator -- |
| ----------------------- |
| |
| function Current_Separator (Iter : Command_Line_Iterator) return String is |
| begin |
| if Iter.Params = null |
| or else Iter.Current > Iter.Params'Last |
| or else Iter.Params (Iter.Current) = null |
| then |
| return ""; |
| |
| else |
| declare |
| Sep : constant Character := |
| Iter.Params (Iter.Current) (Iter.Params (Iter.Current)'First); |
| begin |
| if Sep = ASCII.NUL then |
| return ""; |
| else |
| return "" & Sep; |
| end if; |
| end; |
| end if; |
| end Current_Separator; |
| |
| ----------------------- |
| -- Current_Parameter -- |
| ----------------------- |
| |
| function Current_Parameter (Iter : Command_Line_Iterator) return String is |
| begin |
| if Iter.Params = null |
| or else Iter.Current > Iter.Params'Last |
| or else Iter.Params (Iter.Current) = null |
| then |
| return ""; |
| |
| else |
| declare |
| P : constant String := Iter.Params (Iter.Current).all; |
| |
| begin |
| -- Skip separator |
| |
| return P (P'First + 1 .. P'Last); |
| end; |
| end if; |
| end Current_Parameter; |
| |
| -------------- |
| -- Has_More -- |
| -------------- |
| |
| function Has_More (Iter : Command_Line_Iterator) return Boolean is |
| begin |
| return Iter.List /= null and then Iter.Current <= Iter.List'Last; |
| end Has_More; |
| |
| ---------- |
| -- Next -- |
| ---------- |
| |
| procedure Next (Iter : in out Command_Line_Iterator) is |
| begin |
| Iter.Current := Iter.Current + 1; |
| while Iter.Current <= Iter.List'Last |
| and then Iter.List (Iter.Current) = null |
| loop |
| Iter.Current := Iter.Current + 1; |
| end loop; |
| end Next; |
| |
| ---------- |
| -- Free -- |
| ---------- |
| |
| procedure Free (Config : in out Command_Line_Configuration) is |
| begin |
| if Config /= null then |
| Free (Config.Aliases); |
| Free (Config.Expansions); |
| Free (Config.Prefixes); |
| Unchecked_Free (Config); |
| end if; |
| end Free; |
| |
| ---------- |
| -- Free -- |
| ---------- |
| |
| procedure Free (Cmd : in out Command_Line) is |
| begin |
| Free (Cmd.Expanded); |
| Free (Cmd.Coalesce); |
| Free (Cmd.Params); |
| end Free; |
| |
| end GNAT.Command_Line; |