-- --
-- B o d y --
-- --
--- Copyright (C) 1999-2003 Free Software Foundation, Inc. --
+-- 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 2, or (at your option) any later ver- --
+-- 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. See the GNU General Public License --
--- for more details. You should have received a copy of the GNU General --
--- Public License distributed with GNAT; see file COPYING. If not, write --
--- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
--- MA 02111-1307, USA. --
+-- or FITNESS FOR A PARTICULAR PURPOSE. --
-- --
--- As a special exception, if other files instantiate generics from this --
--- unit, or you link this unit with other files to produce an executable, --
--- this unit does not by itself cause the resulting executable to be --
--- covered by the GNU General Public License. This exception does not --
--- however invalidate any other reasons why the executable file might be --
--- covered by the GNU Public License. --
+-- 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.Command_Line;
+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 Section_Number is new Natural range 0 .. 65534;
- for Section_Number'Size use 16;
-
- type Parameter_Type is record
- Arg_Num : Positive;
- First : Positive;
- Last : Positive;
- end record;
- The_Parameter : Parameter_Type;
- The_Switch : Parameter_Type;
- -- This type and this variable are provided to store the current switch
- -- and parameter
-
- type Is_Switch_Type is array (1 .. CL.Argument_Count) of Boolean;
- pragma Pack (Is_Switch_Type);
-
- Is_Switch : Is_Switch_Type := (others => False);
- -- Indicates wich arguments on the command line are considered not be
- -- switches or parameters to switches (this leaves e.g. the filenames...)
-
- type Section_Type is array (1 .. CL.Argument_Count + 1) of Section_Number;
- pragma Pack (Section_Type);
- Section : Section_Type := (others => 1);
- -- Contains the number of the section associated with the current
- -- switch. If this number is 0, then it is a section delimiter, which
- -- is never returns by GetOpt.
- -- The last element of this array is set to 0 to avoid the need to test for
- -- if we have reached the end of the command line in loops.
-
- Current_Argument : Natural := 1;
- -- Number of the current argument parsed on the command line
-
- Current_Index : Natural := 1;
- -- Index in the current argument of the character to be processed
-
- Current_Section : Section_Number := 1;
-
- Expansion_It : aliased Expansion_Iterator;
- -- When Get_Argument is expanding a file name, this is the iterator used
-
- In_Expansion : Boolean := False;
- -- True if we are expanding a file
-
- Switch_Character : Character := '-';
- -- The character at the beginning of the command line arguments,
- -- indicating the beginning of a switch
-
- Stop_At_First : Boolean := False;
- -- If it is True then Getopt stops at the first non-switch argument
+ 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);
+ 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 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 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.
+ -- 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 at least partially
+ -- partially Arg. Index_In_Switches is set to 0 if none matches.
+ -- What are other parameters??? in particular Param is not always set???
+
+ 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 --
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)) +
+ S (J) := Character'Val
+ (Character'Pos (S (J)) +
Character'Pos ('a') -
Character'Pos ('A'));
end if;
use GNAT.Directory_Operations;
type Pointer is access all Expansion_Iterator;
+ It : constant Pointer := Iterator'Unrestricted_Access;
S : String (1 .. 1024);
Last : Natural;
- It : Pointer := Iterator'Unrestricted_Access;
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
+ -- 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
if Last = 0 then
Close (It.Levels (Current).Dir);
- -- If we are at level 1, we are finished; return an empty string.
+ -- 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
+ -- Otherwise continue with the directory at the previous level
Current := Current - 1;
It.Current_Depth := Current;
(It.Levels (Current).Dir, It.Dir_Name (1 .. NL));
end if;
end if;
+ end if;
- -- If not a directory, check the relative path against the pattern
+ -- 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);
+ -- Note that we try to match also against directory names, since
+ -- clients of this function may expect to retrieve directories.
- -- If it matches, return the relative path
+ declare
+ Name : String :=
+ It.Dir_Name (It.Start .. It.Levels (Current).Name_Last)
+ & S (1 .. Last);
- if GNAT.Regexp.Match (Name, Iterator.Regexp) then
- return Name;
- end if;
- end;
- end if;
+ begin
+ Canonical_Case_File_Name (Name);
- end loop;
+ -- If it matches return the relative path
- return String'(1 .. 0 => ' ');
+ if GNAT.Regexp.Match (Name, Iterator.Regexp) then
+ return Name;
+ end if;
+ end;
+ end loop;
end Expansion;
-----------------
-- Full_Switch --
-----------------
- function Full_Switch return String is
+ function Full_Switch
+ (Parser : Opt_Parser := Command_Line_Parser) return String
+ is
begin
- return CL.Argument (The_Switch.Arg_Num)
- (The_Switch.First .. The_Switch.Last);
+ 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) return String is
- Total : constant Natural := CL.Argument_Count;
-
+ function Get_Argument
+ (Do_Expansion : Boolean := False;
+ Parser : Opt_Parser := Command_Line_Parser) return String
+ is
begin
- if In_Expansion then
+ if Parser.In_Expansion then
declare
- S : constant String := Expansion (Expansion_It);
-
+ S : constant String := Expansion (Parser.Expansion_It);
begin
if S'Length /= 0 then
return S;
else
- In_Expansion := False;
+ Parser.In_Expansion := False;
end if;
end;
end if;
- if Current_Argument > Total then
+ if Parser.Current_Argument > Parser.Arg_Count then
-- If this is the first time this function is called
- if Current_Index = 1 then
- Current_Argument := 1;
- while Current_Argument <= CL.Argument_Count
- and then Section (Current_Argument) /= Current_Section
+ 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
- Current_Argument := Current_Argument + 1;
+ Parser.Current_Argument := Parser.Current_Argument + 1;
end loop;
else
return String'(1 .. 0 => ' ');
end if;
- elsif Section (Current_Argument) = 0 then
- while Current_Argument <= CL.Argument_Count
- and then Section (Current_Argument) /= Current_Section
+ 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
- Current_Argument := Current_Argument + 1;
+ Parser.Current_Argument := Parser.Current_Argument + 1;
end loop;
end if;
- Current_Index := 2;
+ Parser.Current_Index := Integer'Last;
- while Current_Argument <= Total
- and then Is_Switch (Current_Argument)
+ while Parser.Current_Argument <= Parser.Arg_Count
+ and then Parser.Is_Switch (Parser.Current_Argument)
loop
- Current_Argument := Current_Argument + 1;
+ Parser.Current_Argument := Parser.Current_Argument + 1;
end loop;
- if Current_Argument > Total then
+ if Parser.Current_Argument > Parser.Arg_Count then
return String'(1 .. 0 => ' ');
- end if;
-
- if Section (Current_Argument) = 0 then
+ elsif Parser.Section (Parser.Current_Argument) = 0 then
return Get_Argument (Do_Expansion);
end if;
- Current_Argument := Current_Argument + 1;
+ Parser.Current_Argument := Parser.Current_Argument + 1;
-- Could it be a file name with wild cards to expand?
if Do_Expansion then
declare
- Arg : String renames CL.Argument (Current_Argument - 1);
- Index : Positive := Arg'First;
+ 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
- In_Expansion := True;
- Start_Expansion (Expansion_It, Arg);
+ Parser.In_Expansion := True;
+ Start_Expansion (Parser.Expansion_It, Arg);
return Get_Argument (Do_Expansion);
end if;
end;
end if;
- return CL.Argument (Current_Argument - 1);
+ 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) return Character
+ 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 Current_Argument > CL.Argument_Count
- or else (Current_Index > CL.Argument (Current_Argument)'Last
- and then not Goto_Next_Argument_In_Section)
+ 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;
- -- If we are on a new item, test if this might be a switch
-
- if Current_Index = 1 then
- if CL.Argument (Current_Argument)(1) /= Switch_Character then
- if Switches (Switches'First) = '*' then
- Set_Parameter (The_Switch,
- Arg_Num => Current_Argument,
- First => 1,
- Last => CL.Argument (Current_Argument)'Last);
- Is_Switch (Current_Argument) := True;
- Dummy := Goto_Next_Argument_In_Section;
- return '*';
- end if;
-
- if Stop_At_First then
- Current_Argument := Positive'Last;
- return ASCII.NUL;
-
- elsif not Goto_Next_Argument_In_Section then
- return ASCII.NUL;
-
- else
- return Getopt (Switches);
- end if;
- end if;
+ -- By default, the switch will not have a parameter
- Current_Index := 2;
- Is_Switch (Current_Argument) := True;
- end if;
+ Parser.The_Parameter :=
+ (Integer'Last, Integer'Last, Integer'Last - 1, ASCII.NUL);
+ Parser.The_Separator := ASCII.NUL;
declare
- Arg : String renames CL.Argument (Current_Argument);
+ Arg : constant String :=
+ Argument (Parser, Parser.Current_Argument);
Index_Switches : Natural := 0;
Max_Length : Natural := 0;
- Index : Natural := Switches'First;
- Length : Natural := 1;
End_Index : Natural;
-
+ Param : Switch_Parameter_Type;
begin
- while Index <= Switches'Last loop
-
- -- Search the length of the parameter at this position in Switches
+ -- 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;
- Length := Index;
- while Length <= Switches'Last
- and then Switches (Length) /= ' '
- loop
- Length := Length + 1;
- end loop;
+ if Parser.Stop_At_First then
+ Parser.Current_Argument := Positive'Last;
+ return ASCII.NUL;
- if (Switches (Length - 1) = ':' or else
- Switches (Length - 1) = '=' or else
- Switches (Length - 1) = '?' or else
- Switches (Length - 1) = '!')
- and then Length > Index + 1
- then
- Length := Length - 1;
- end if;
+ elsif not Goto_Next_Argument_In_Section (Parser) then
+ return ASCII.NUL;
- -- If it is the one we searched, it may be a candidate
+ else
+ -- Recurse to get the next switch on the command line
- if Current_Index + Length - 1 - Index <= Arg'Last
- and then
- Switches (Index .. Length - 1) =
- Arg (Current_Index .. Current_Index + Length - 1 - Index)
- and then Length - Index > Max_Length
- then
- Index_Switches := Index;
- Max_Length := Length - Index;
+ goto Restart;
+ end if;
end if;
- -- Look for the next switch in Switches
+ -- We are on the first character of a new command line argument,
+ -- which starts with Switch_Character. Further analysis is needed.
- while Index <= Switches'Last
- and then Switches (Index) /= ' ' loop
- Index := Index + 1;
- end loop;
-
- Index := Index + 1;
- end loop;
+ Parser.Current_Index := Parser.Current_Index + 1;
+ Parser.Is_Switch (Parser.Current_Argument) := True;
+ end if;
- End_Index := Current_Index + Max_Length - 1;
+ 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, skip it, unless we had '*' in Switches
+ -- If switch is not accepted, it is either invalid or is returned
+ -- in the context of '*'.
if Index_Switches = 0 then
- if Switches (Switches'First) = '*' then
- Set_Parameter (The_Switch,
- Arg_Num => Current_Argument,
- First => 1,
- Last => CL.Argument (Current_Argument)'Last);
- Is_Switch (Current_Argument) := True;
- Dummy := Goto_Next_Argument_In_Section;
- return '*';
- end if;
-- Depending on the value of Concatenate, the full switch is
- -- a single character (True) or the rest of the argument (False).
+ -- a single character or the rest of the argument.
- if Concatenate then
- End_Index := Current_Index;
- else
- End_Index := Arg'Last;
+ End_Index :=
+ (if Concatenate then Parser.Current_Index else Arg'Last);
+
+ 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 (The_Switch,
- Arg_Num => Current_Argument,
- First => Current_Index,
- Last => End_Index);
- Current_Index := End_Index + 1;
+ 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;
- Set_Parameter (The_Switch,
- Arg_Num => Current_Argument,
- First => Current_Index,
- Last => End_Index);
-
- -- Case of switch needs an argument
-
- if Index_Switches + Max_Length <= Switches'Last then
+ 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;
- case Switches (Index_Switches + Max_Length) is
+ when Parameter_With_Space_Or_Equal =>
- when ':' =>
+ -- If the switch is of the form <switch>=xxx
- if End_Index < Arg'Last then
- Set_Parameter (The_Parameter,
- Arg_Num => Current_Argument,
- First => End_Index + 1,
- Last => Arg'Last);
- Dummy := Goto_Next_Argument_In_Section;
+ if End_Index < Arg'Last then
- elsif Section (Current_Argument + 1) /= 0 then
+ if Arg (End_Index + 1) = '='
+ and then End_Index + 1 < Arg'Last
+ then
+ Parser.The_Separator := '=';
Set_Parameter
- (The_Parameter,
- Arg_Num => Current_Argument + 1,
- First => 1,
- Last => CL.Argument (Current_Argument + 1)'Last);
- Current_Argument := Current_Argument + 1;
- Is_Switch (Current_Argument) := True;
- Dummy := Goto_Next_Argument_In_Section;
-
+ (Parser.The_Parameter,
+ Arg_Num => Parser.Current_Argument,
+ First => End_Index + 2,
+ Last => Arg'Last);
+ Dummy := Goto_Next_Argument_In_Section (Parser);
else
- Current_Index := End_Index + 1;
+ Parser.Current_Index := End_Index + 1;
raise Invalid_Parameter;
end if;
- when '=' =>
-
- -- If the switch is of the form <switch>=xxx
+ -- 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
- Set_Parameter (The_Parameter,
- Arg_Num => Current_Argument,
- First => End_Index + 2,
- Last => Arg'Last);
- Dummy := Goto_Next_Argument_In_Section;
-
- else
- 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;
- elsif Section (Current_Argument + 1) /= 0 then
- Set_Parameter
- (The_Parameter,
- Arg_Num => Current_Argument + 1,
- First => 1,
- Last => CL.Argument (Current_Argument + 1)'Last);
- Current_Argument := Current_Argument + 1;
- Is_Switch (Current_Argument) := True;
- Dummy := Goto_Next_Argument_In_Section;
+ when Parameter_No_Space =>
- else
- Current_Index := End_Index + 1;
- raise Invalid_Parameter;
- end if;
+ 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);
- when '!' =>
+ else
+ Parser.Current_Index := End_Index + 1;
+ raise Invalid_Parameter;
+ end if;
- if End_Index < Arg'Last then
- Set_Parameter (The_Parameter,
- Arg_Num => Current_Argument,
- First => End_Index + 1,
- Last => Arg'Last);
- Dummy := Goto_Next_Argument_In_Section;
+ when Parameter_Optional =>
- else
- Current_Index := End_Index + 1;
- raise Invalid_Parameter;
- end if;
+ 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;
- when '?' =>
+ Dummy := Goto_Next_Argument_In_Section (Parser);
- if End_Index < Arg'Last then
- Set_Parameter (The_Parameter,
- Arg_Num => Current_Argument,
- First => End_Index + 1,
- Last => Arg'Last);
+ when Parameter_None =>
- else
- Set_Parameter (The_Parameter,
- Arg_Num => Current_Argument,
- First => 2,
- Last => 1);
- end if;
- Dummy := Goto_Next_Argument_In_Section;
+ if Concatenate or else End_Index = Arg'Last then
+ Parser.Current_Index := End_Index + 1;
- when others =>
- if Concatenate or else End_Index = Arg'Last then
- 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.
- else
- -- If Concatenate is False and the full argument is not
- -- recognized as a switch, this is an invalid switch.
-
- Set_Parameter (The_Switch,
- Arg_Num => Current_Argument,
- First => Current_Index,
- Last => Arg'Last);
- Current_Index := Arg'Last + 1;
- raise 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;
- end case;
-
- elsif Concatenate or else End_Index = Arg'Last then
- 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.
-
- Set_Parameter (The_Switch,
- Arg_Num => Current_Argument,
- First => Current_Index,
- Last => Arg'Last);
- Current_Index := Arg'Last + 1;
- raise Invalid_Switch;
- 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;
-- Goto_Next_Argument_In_Section --
-----------------------------------
- function Goto_Next_Argument_In_Section return Boolean is
+ function Goto_Next_Argument_In_Section
+ (Parser : Opt_Parser) return Boolean
+ is
begin
- Current_Index := 1;
- Current_Argument := Current_Argument + 1;
+ Parser.Current_Argument := Parser.Current_Argument + 1;
- if Section (Current_Argument) = 0 then
+ if Parser.Current_Argument > Parser.Arg_Count
+ or else Parser.Section (Parser.Current_Argument) = 0
+ then
loop
- if Current_Argument > CL.Argument_Count then
+ Parser.Current_Argument := Parser.Current_Argument + 1;
+
+ if Parser.Current_Argument > Parser.Arg_Count then
+ Parser.Current_Index := 1;
return False;
end if;
- Current_Argument := Current_Argument + 1;
- exit when Section (Current_Argument) = Current_Section;
+ 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 := "") is
- Index : Integer := 1;
+ procedure Goto_Section
+ (Name : String := "";
+ Parser : Opt_Parser := Command_Line_Parser)
+ is
+ Index : Integer;
begin
- In_Expansion := False;
+ Parser.In_Expansion := False;
if Name = "" then
- Current_Argument := 1;
- Current_Index := 1;
- Current_Section := 1;
+ Parser.Current_Argument := 1;
+ Parser.Current_Index := 1;
+ Parser.Current_Section := 1;
return;
end if;
- while Index <= CL.Argument_Count loop
-
- if Section (Index) = 0
- and then CL.Argument (Index) = Switch_Character & Name
+ Index := 1;
+ while Index <= Parser.Arg_Count loop
+ if Parser.Section (Index) = 0
+ and then Argument (Parser, Index) = Parser.Switch_Character & Name
then
- Current_Argument := Index + 1;
- Current_Index := 1;
+ Parser.Current_Argument := Index + 1;
+ Parser.Current_Index := 1;
- if Current_Argument <= CL.Argument_Count then
- Current_Section := Section (Current_Argument);
+ 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;
- Current_Argument := Positive'Last;
- Current_Index := 2; -- so that Get_Argument returns nothing
+ Parser.Current_Argument := Positive'Last;
+ Parser.Current_Index := 2; -- so that Get_Argument returns nothing
end Goto_Section;
----------------------------
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
- Section_Num : Section_Number := 1;
- Section_Index : Integer := Section_Delimiters'First;
+ begin
+ Free (Parser);
+
+ if Command_Line = null then
+ Parser := new Opt_Parser_Data (CL.Argument_Count);
+ Internal_Initialize_Option_Scan
+ (Parser => Parser,
+ 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
- Current_Argument := 0;
- Current_Index := 0;
- In_Expansion := False;
- Switch_Character := Switch_Char;
- Stop_At_First := Stop_At_First_Non_Switch;
+ 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;
+ Parser.Section := (others => 1);
-- 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) /= ' '
Delimiter_Found := False;
Section_Num := Section_Num + 1;
- for Index in 1 .. CL.Argument_Count loop
- if CL.Argument (Index)(1) = Switch_Character
+ for Index in 1 .. Parser.Arg_Count loop
+ if Argument (Parser, Index)(1) = Parser.Switch_Character
and then
- CL.Argument (Index) = Switch_Character &
+ Argument (Parser, Index) = Parser.Switch_Character &
Section_Delimiters
(Section_Index .. Last - 1)
then
- Section (Index) := 0;
+ Parser.Section (Index) := 0;
Delimiter_Found := True;
- elsif Section (Index) = 0 then
+ elsif Parser.Section (Index) = 0 then
Delimiter_Found := False;
elsif Delimiter_Found then
- Section (Index) := Section_Num;
+ Parser.Section (Index) := Section_Num;
end if;
end loop;
end loop;
end loop;
- Delimiter_Found := Goto_Next_Argument_In_Section;
- end Initialize_Option_Scan;
+ Discard := Goto_Next_Argument_In_Section (Parser);
+ end Internal_Initialize_Option_Scan;
---------------
-- Parameter --
---------------
- function Parameter return String is
+ function Parameter
+ (Parser : Opt_Parser := Command_Line_Parser) return String
+ is
begin
- if The_Parameter.First > The_Parameter.Last then
+ if Parser.The_Parameter.First > Parser.The_Parameter.Last then
return String'(1 .. 0 => ' ');
else
- return CL.Argument (The_Parameter.Arg_Num)
- (The_Parameter.First .. The_Parameter.Last);
+ 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 --
-------------------
(Variable : out Parameter_Type;
Arg_Num : Positive;
First : Positive;
- Last : 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;
---------------------
is
Directory_Separator : Character;
pragma Import (C, Directory_Separator, "__gnat_dir_separator");
- First : Positive := Pattern'First;
- Pat : String := Pattern;
+ First : Positive := Pattern'First;
+ Pat : String := Pattern;
begin
Canonical_Case_File_Name (Pat);
exit when Iterator.Maximum_Depth = Max_Depth;
end if;
end loop;
-
end Start_Expansion;
-begin
- Section (CL.Argument_Count + 1) := 0;
+ ----------
+ -- 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), "", ASCII.NUL);
+ 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
+ -- First determine if the switch corresponds to one belonging to the
+ -- configuration. If so, run callback and exit.
+
+ if Cmd.Config /= null and then Cmd.Config.Switches /= null then
+ for S in Cmd.Config.Switches'Range loop
+ declare
+ Config_Switch : String renames Cmd.Config.Switches (S).all;
+ begin
+ if Actual_Switch (Config_Switch) = Switch
+ and then
+ ((Can_Have_Parameter (Config_Switch)
+ and then Parameter /= "")
+ or else
+ (not Require_Parameter (Config_Switch)
+ and then Parameter = ""))
+ then
+ Callback (Switch, Parameter);
+ return;
+ end if;
+ end;
+ end loop;
+ end if;
+
+ -- If adding a switch that can in fact be expanded through aliases,
+ -- add separately each of its expansions.
+
+ -- 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 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;
+
+ -- If adding a switch grouping several switches, 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:
+ -- Return without executing 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
+ Cmd.Coalesce_Sections (E) :=
+ (if Cmd.Sections (E) = null then null
+ else new String'(Cmd.Sections (E).all));
+ end loop;
+
+ Cmd.Coalesce_Params := new Argument_List (Cmd.Params'Range);
+ for E in Cmd.Params'Range loop
+ Cmd.Coalesce_Params (E) :=
+ (if Cmd.Params (E) = null then null
+ else new String'(Cmd.Params (E).all));
+ 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);
+ Free (Config.Sections);
+ Free (Config.Switches);
+ 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;
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