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------------------------------------------------------------------------------
--                                                                          --
--                         GNAT RUN-TIME COMPONENTS                         --
--                                                                          --
--               A D A . S T R I N G S . W I D E _ F I X E D                --
--                                                                          --
--                                 B o d y                                  --
--                                                                          --
--          Copyright (C) 1992-2010, 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.Strings.Wide_Wide_Maps; use Ada.Strings.Wide_Wide_Maps;
with Ada.Strings.Wide_Wide_Search;
 
package body Ada.Strings.Wide_Wide_Fixed is
 
   ------------------------
   -- Search Subprograms --
   ------------------------
 
   function Index
     (Source  : Wide_Wide_String;
      Pattern : Wide_Wide_String;
      Going   : Direction := Forward;
      Mapping : Wide_Wide_Maps.Wide_Wide_Character_Mapping :=
                  Wide_Wide_Maps.Identity)
      return Natural
   renames Ada.Strings.Wide_Wide_Search.Index;
 
   function Index
     (Source  : Wide_Wide_String;
      Pattern : Wide_Wide_String;
      Going   : Direction := Forward;
      Mapping : Wide_Wide_Maps.Wide_Wide_Character_Mapping_Function)
      return Natural
   renames Ada.Strings.Wide_Wide_Search.Index;
 
   function Index
     (Source : Wide_Wide_String;
      Set    : Wide_Wide_Maps.Wide_Wide_Character_Set;
      Test   : Membership := Inside;
      Going  : Direction  := Forward) return Natural
   renames Ada.Strings.Wide_Wide_Search.Index;
 
   function Index
     (Source  : Wide_Wide_String;
      Pattern : Wide_Wide_String;
      From    : Positive;
      Going   : Direction := Forward;
      Mapping : Wide_Wide_Maps.Wide_Wide_Character_Mapping :=
                  Wide_Wide_Maps.Identity)
      return Natural
   renames Ada.Strings.Wide_Wide_Search.Index;
 
   function Index
     (Source  : Wide_Wide_String;
      Pattern : Wide_Wide_String;
      From    : Positive;
      Going   : Direction := Forward;
      Mapping : Wide_Wide_Maps.Wide_Wide_Character_Mapping_Function)
      return Natural
   renames Ada.Strings.Wide_Wide_Search.Index;
 
   function Index
     (Source  : Wide_Wide_String;
      Set     : Wide_Wide_Maps.Wide_Wide_Character_Set;
      From    : Positive;
      Test    : Membership := Inside;
      Going   : Direction := Forward) return Natural
   renames Ada.Strings.Wide_Wide_Search.Index;
 
   function Index_Non_Blank
     (Source : Wide_Wide_String;
      Going  : Direction := Forward) return Natural
      renames Ada.Strings.Wide_Wide_Search.Index_Non_Blank;
 
   function Index_Non_Blank
     (Source : Wide_Wide_String;
      From   : Positive;
      Going  : Direction := Forward) return Natural
   renames Ada.Strings.Wide_Wide_Search.Index_Non_Blank;
 
   function Count
     (Source  : Wide_Wide_String;
      Pattern : Wide_Wide_String;
      Mapping : Wide_Wide_Maps.Wide_Wide_Character_Mapping :=
                  Wide_Wide_Maps.Identity)
      return Natural
   renames Ada.Strings.Wide_Wide_Search.Count;
 
   function Count
     (Source  : Wide_Wide_String;
      Pattern : Wide_Wide_String;
      Mapping : Wide_Wide_Maps.Wide_Wide_Character_Mapping_Function)
      return Natural
   renames Ada.Strings.Wide_Wide_Search.Count;
 
   function Count
     (Source : Wide_Wide_String;
      Set    : Wide_Wide_Maps.Wide_Wide_Character_Set) return Natural
   renames Ada.Strings.Wide_Wide_Search.Count;
 
   procedure Find_Token
     (Source : Wide_Wide_String;
      Set    : Wide_Wide_Maps.Wide_Wide_Character_Set;
      From   : Positive;
      Test   : Membership;
      First  : out Positive;
      Last   : out Natural)
   renames Ada.Strings.Wide_Wide_Search.Find_Token;
 
   procedure Find_Token
     (Source : Wide_Wide_String;
      Set    : Wide_Wide_Maps.Wide_Wide_Character_Set;
      Test   : Membership;
      First  : out Positive;
      Last   : out Natural)
   renames Ada.Strings.Wide_Wide_Search.Find_Token;
 
   ---------
   -- "*" --
   ---------
 
   function "*"
     (Left  : Natural;
      Right : Wide_Wide_Character) return Wide_Wide_String
   is
      Result : Wide_Wide_String (1 .. Left);
 
   begin
      for J in Result'Range loop
         Result (J) := Right;
      end loop;
 
      return Result;
   end "*";
 
   function "*"
     (Left  : Natural;
      Right : Wide_Wide_String) return Wide_Wide_String
   is
      Result : Wide_Wide_String (1 .. Left * Right'Length);
      Ptr    : Integer := 1;
 
   begin
      for J in 1 .. Left loop
         Result (Ptr .. Ptr + Right'Length - 1) := Right;
         Ptr := Ptr + Right'Length;
      end loop;
 
      return Result;
   end "*";
 
   ------------
   -- Delete --
   ------------
 
   function Delete
     (Source  : Wide_Wide_String;
      From    : Positive;
      Through : Natural) return Wide_Wide_String
   is
   begin
      if From not in Source'Range
        or else Through > Source'Last
      then
         raise Index_Error;
 
      elsif From > Through then
         return Source;
 
      else
         declare
            Len    : constant Integer := Source'Length - (Through - From + 1);
            Result : constant Wide_Wide_String
                       (Source'First .. Source'First + Len - 1) :=
                          Source (Source'First .. From - 1) &
                          Source (Through + 1 .. Source'Last);
         begin
            return Result;
         end;
      end if;
   end Delete;
 
   procedure Delete
     (Source  : in out Wide_Wide_String;
      From    : Positive;
      Through : Natural;
      Justify : Alignment := Left;
      Pad     : Wide_Wide_Character := Wide_Wide_Space)
   is
   begin
      Move (Source  => Delete (Source, From, Through),
            Target  => Source,
            Justify => Justify,
            Pad     => Pad);
   end Delete;
 
   ----------
   -- Head --
   ----------
 
   function Head
     (Source : Wide_Wide_String;
      Count  : Natural;
      Pad    : Wide_Wide_Character := Wide_Wide_Space) return Wide_Wide_String
   is
      Result : Wide_Wide_String (1 .. Count);
 
   begin
      if Count <= Source'Length then
         Result := Source (Source'First .. Source'First + Count - 1);
 
      else
         Result (1 .. Source'Length) := Source;
 
         for J in Source'Length + 1 .. Count loop
            Result (J) := Pad;
         end loop;
      end if;
 
      return Result;
   end Head;
 
   procedure Head
     (Source  : in out Wide_Wide_String;
      Count   : Natural;
      Justify : Alignment := Left;
      Pad     : Wide_Wide_Character := Ada.Strings.Wide_Wide_Space)
   is
   begin
      Move (Source  => Head (Source, Count, Pad),
            Target  => Source,
            Drop    => Error,
            Justify => Justify,
            Pad     => Pad);
   end Head;
 
   ------------
   -- Insert --
   ------------
 
   function Insert
     (Source   : Wide_Wide_String;
      Before   : Positive;
      New_Item : Wide_Wide_String) return Wide_Wide_String
   is
      Result : Wide_Wide_String (1 .. Source'Length + New_Item'Length);
 
   begin
      if Before < Source'First or else Before > Source'Last + 1 then
         raise Index_Error;
      end if;
 
      Result := Source (Source'First .. Before - 1) & New_Item &
                Source (Before .. Source'Last);
      return Result;
   end Insert;
 
   procedure Insert
     (Source   : in out Wide_Wide_String;
      Before   : Positive;
      New_Item : Wide_Wide_String;
      Drop     : Truncation := Error)
   is
   begin
      Move (Source => Insert (Source, Before, New_Item),
            Target => Source,
            Drop   => Drop);
   end Insert;
 
   ----------
   -- Move --
   ----------
 
   procedure Move
     (Source  : Wide_Wide_String;
      Target  : out Wide_Wide_String;
      Drop    : Truncation := Error;
      Justify : Alignment  := Left;
      Pad     : Wide_Wide_Character  := Wide_Wide_Space)
   is
      Sfirst  : constant Integer := Source'First;
      Slast   : constant Integer := Source'Last;
      Slength : constant Integer := Source'Length;
 
      Tfirst  : constant Integer := Target'First;
      Tlast   : constant Integer := Target'Last;
      Tlength : constant Integer := Target'Length;
 
      function Is_Padding (Item : Wide_Wide_String) return Boolean;
      --  Determinbe if all characters in Item are pad characters
 
      function Is_Padding (Item : Wide_Wide_String) return Boolean is
      begin
         for J in Item'Range loop
            if Item (J) /= Pad then
               return False;
            end if;
         end loop;
 
         return True;
      end Is_Padding;
 
   --  Start of processing for Move
 
   begin
      if Slength = Tlength then
         Target := Source;
 
      elsif Slength > Tlength then
 
         case Drop is
            when Left =>
               Target := Source (Slast - Tlength + 1 .. Slast);
 
            when Right =>
               Target := Source (Sfirst .. Sfirst + Tlength - 1);
 
            when Error =>
               case Justify is
                  when Left =>
                     if Is_Padding (Source (Sfirst + Tlength .. Slast)) then
                        Target :=
                          Source (Sfirst .. Sfirst + Target'Length - 1);
                     else
                        raise Length_Error;
                     end if;
 
                  when Right =>
                     if Is_Padding (Source (Sfirst .. Slast - Tlength)) then
                        Target := Source (Slast - Tlength + 1 .. Slast);
                     else
                        raise Length_Error;
                     end if;
 
                  when Center =>
                     raise Length_Error;
               end case;
 
         end case;
 
      --  Source'Length < Target'Length
 
      else
         case Justify is
            when Left =>
               Target (Tfirst .. Tfirst + Slength - 1) := Source;
 
               for J in Tfirst + Slength .. Tlast loop
                  Target (J) := Pad;
               end loop;
 
            when Right =>
               for J in Tfirst .. Tlast - Slength loop
                  Target (J) := Pad;
               end loop;
 
               Target (Tlast - Slength + 1 .. Tlast) := Source;
 
            when Center =>
               declare
                  Front_Pad   : constant Integer := (Tlength - Slength) / 2;
                  Tfirst_Fpad : constant Integer := Tfirst + Front_Pad;
 
               begin
                  for J in Tfirst .. Tfirst_Fpad - 1 loop
                     Target (J) := Pad;
                  end loop;
 
                  Target (Tfirst_Fpad .. Tfirst_Fpad + Slength - 1) := Source;
 
                  for J in Tfirst_Fpad + Slength .. Tlast loop
                     Target (J) := Pad;
                  end loop;
               end;
         end case;
      end if;
   end Move;
 
   ---------------
   -- Overwrite --
   ---------------
 
   function Overwrite
     (Source   : Wide_Wide_String;
      Position : Positive;
      New_Item : Wide_Wide_String) return Wide_Wide_String
   is
   begin
      if Position not in Source'First .. Source'Last + 1 then
         raise Index_Error;
      else
         declare
            Result_Length : constant Natural :=
                              Natural'Max
                                (Source'Length,
                                 Position - Source'First + New_Item'Length);
 
            Result : Wide_Wide_String (1 .. Result_Length);
 
         begin
            Result := Source (Source'First .. Position - 1) & New_Item &
                        Source (Position + New_Item'Length .. Source'Last);
            return Result;
         end;
      end if;
   end Overwrite;
 
   procedure Overwrite
     (Source   : in out Wide_Wide_String;
      Position : Positive;
      New_Item : Wide_Wide_String;
      Drop     : Truncation := Right)
   is
   begin
      Move (Source => Overwrite (Source, Position, New_Item),
            Target => Source,
            Drop   => Drop);
   end Overwrite;
 
   -------------------
   -- Replace_Slice --
   -------------------
 
   function Replace_Slice
     (Source : Wide_Wide_String;
      Low    : Positive;
      High   : Natural;
      By     : Wide_Wide_String) return Wide_Wide_String
   is
   begin
      if Low > Source'Last + 1 or else High < Source'First - 1 then
         raise Index_Error;
      end if;
 
      if High >= Low then
         declare
            Front_Len : constant Integer :=
                          Integer'Max (0, Low - Source'First);
            --  Length of prefix of Source copied to result
 
            Back_Len : constant Integer :=
                         Integer'Max (0, Source'Last - High);
            --  Length of suffix of Source copied to result
 
            Result_Length : constant Integer :=
                              Front_Len + By'Length + Back_Len;
            --  Length of result
 
            Result : Wide_Wide_String (1 .. Result_Length);
 
         begin
            Result (1 .. Front_Len) := Source (Source'First .. Low - 1);
            Result (Front_Len + 1 .. Front_Len + By'Length) := By;
            Result (Front_Len + By'Length + 1 .. Result'Length) :=
              Source (High + 1 .. Source'Last);
            return Result;
         end;
 
      else
         return Insert (Source, Before => Low, New_Item => By);
      end if;
   end Replace_Slice;
 
   procedure Replace_Slice
     (Source   : in out Wide_Wide_String;
      Low      : Positive;
      High     : Natural;
      By       : Wide_Wide_String;
      Drop     : Truncation := Error;
      Justify  : Alignment  := Left;
      Pad      : Wide_Wide_Character  := Wide_Wide_Space)
   is
   begin
      Move (Replace_Slice (Source, Low, High, By), Source, Drop, Justify, Pad);
   end Replace_Slice;
 
   ----------
   -- Tail --
   ----------
 
   function Tail
     (Source : Wide_Wide_String;
      Count  : Natural;
      Pad    : Wide_Wide_Character := Wide_Wide_Space) return Wide_Wide_String
   is
      Result : Wide_Wide_String (1 .. Count);
 
   begin
      if Count < Source'Length then
         Result := Source (Source'Last - Count + 1 .. Source'Last);
 
      --  Pad on left
 
      else
         for J in 1 .. Count - Source'Length loop
            Result (J) := Pad;
         end loop;
 
         Result (Count - Source'Length + 1 .. Count) := Source;
      end if;
 
      return Result;
   end Tail;
 
   procedure Tail
     (Source  : in out Wide_Wide_String;
      Count   : Natural;
      Justify : Alignment := Left;
      Pad     : Wide_Wide_Character := Ada.Strings.Wide_Wide_Space)
   is
   begin
      Move (Source  => Tail (Source, Count, Pad),
            Target  => Source,
            Drop    => Error,
            Justify => Justify,
            Pad     => Pad);
   end Tail;
 
   ---------------
   -- Translate --
   ---------------
 
   function Translate
     (Source  : Wide_Wide_String;
      Mapping : Wide_Wide_Maps.Wide_Wide_Character_Mapping)
      return Wide_Wide_String
   is
      Result : Wide_Wide_String (1 .. Source'Length);
 
   begin
      for J in Source'Range loop
         Result (J - (Source'First - 1)) := Value (Mapping, Source (J));
      end loop;
 
      return Result;
   end Translate;
 
   procedure Translate
     (Source  : in out Wide_Wide_String;
      Mapping : Wide_Wide_Maps.Wide_Wide_Character_Mapping)
   is
   begin
      for J in Source'Range loop
         Source (J) := Value (Mapping, Source (J));
      end loop;
   end Translate;
 
   function Translate
     (Source  : Wide_Wide_String;
      Mapping : Wide_Wide_Maps.Wide_Wide_Character_Mapping_Function)
      return Wide_Wide_String
   is
      Result : Wide_Wide_String (1 .. Source'Length);
 
   begin
      for J in Source'Range loop
         Result (J - (Source'First - 1)) := Mapping (Source (J));
      end loop;
 
      return Result;
   end Translate;
 
   procedure Translate
     (Source  : in out Wide_Wide_String;
      Mapping : Wide_Wide_Maps.Wide_Wide_Character_Mapping_Function)
   is
   begin
      for J in Source'Range loop
         Source (J) := Mapping (Source (J));
      end loop;
   end Translate;
 
   ----------
   -- Trim --
   ----------
 
   function Trim
     (Source : Wide_Wide_String;
      Side   : Trim_End) return Wide_Wide_String
   is
      Low  : Natural := Source'First;
      High : Natural := Source'Last;
 
   begin
      if Side = Left or else Side = Both then
         while Low <= High and then Source (Low) = Wide_Wide_Space loop
            Low := Low + 1;
         end loop;
      end if;
 
      if Side = Right or else Side = Both then
         while High >= Low and then Source (High) = Wide_Wide_Space loop
            High := High - 1;
         end loop;
      end if;
 
      --  All blanks case
 
      if Low > High then
         return "";
 
      --  At least one non-blank
 
      else
         declare
            Result : constant Wide_Wide_String (1 .. High - Low + 1) :=
                       Source (Low .. High);
 
         begin
            return Result;
         end;
      end if;
   end Trim;
 
   procedure Trim
     (Source  : in out Wide_Wide_String;
      Side    : Trim_End;
      Justify : Alignment      := Left;
      Pad     : Wide_Wide_Character := Wide_Wide_Space)
   is
   begin
      Move (Source  => Trim (Source, Side),
            Target  => Source,
            Justify => Justify,
            Pad     => Pad);
   end Trim;
 
   function Trim
      (Source : Wide_Wide_String;
       Left   : Wide_Wide_Maps.Wide_Wide_Character_Set;
       Right  : Wide_Wide_Maps.Wide_Wide_Character_Set) return Wide_Wide_String
   is
      Low  : Natural := Source'First;
      High : Natural := Source'Last;
 
   begin
      while Low <= High and then Is_In (Source (Low), Left) loop
         Low := Low + 1;
      end loop;
 
      while High >= Low and then Is_In (Source (High), Right) loop
         High := High - 1;
      end loop;
 
      --  Case where source comprises only characters in the sets
 
      if Low > High then
         return "";
      else
         declare
            subtype WS is Wide_Wide_String (1 .. High - Low + 1);
 
         begin
            return WS (Source (Low .. High));
         end;
      end if;
   end Trim;
 
   procedure Trim
      (Source  : in out Wide_Wide_String;
       Left    : Wide_Wide_Maps.Wide_Wide_Character_Set;
       Right   : Wide_Wide_Maps.Wide_Wide_Character_Set;
       Justify : Alignment      := Strings.Left;
       Pad     : Wide_Wide_Character := Wide_Wide_Space)
   is
   begin
      Move (Source  => Trim (Source, Left, Right),
            Target  => Source,
            Justify => Justify,
            Pad     => Pad);
   end Trim;
 
end Ada.Strings.Wide_Wide_Fixed;

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Subversion Repositories openrisc

[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [gcc/] [ada/] [a-stzfix.adb] - Blame information for rev 757

Line No.	Rev	Author	Line
1	706	jeremybenn	`------------------------------------------------------------------------------`
2			`-- --`
3			`-- GNAT RUN-TIME COMPONENTS --`
4			`-- --`
5			`-- A D A . S T R I N G S . W I D E _ F I X E D --`
6			`-- --`
7			`-- B o d y --`
8			`-- --`
9			`-- Copyright (C) 1992-2010, Free Software Foundation, Inc. --`
10			`-- --`
11			`-- GNAT is free software; you can redistribute it and/or modify it under --`
12			`-- terms of the GNU General Public License as published by the Free Soft- --`
13			`-- ware Foundation; either version 3, or (at your option) any later ver- --`
14			`-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --`
15			`-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --`
16			`-- or FITNESS FOR A PARTICULAR PURPOSE. --`
17			`-- --`
18			`-- As a special exception under Section 7 of GPL version 3, you are granted --`
19			`-- additional permissions described in the GCC Runtime Library Exception, --`
20			`-- version 3.1, as published by the Free Software Foundation. --`
21			`-- --`
22			`-- You should have received a copy of the GNU General Public License and --`
23			`-- a copy of the GCC Runtime Library Exception along with this program; --`
24			`-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --`
25			`-- <http://www.gnu.org/licenses/>. --`
26			`-- --`
27			`-- GNAT was originally developed by the GNAT team at New York University. --`
28			`-- Extensive contributions were provided by Ada Core Technologies Inc. --`
29			`-- --`
30			`------------------------------------------------------------------------------`
31
32			`with Ada.Strings.Wide_Wide_Maps; use Ada.Strings.Wide_Wide_Maps;`
33			`with Ada.Strings.Wide_Wide_Search;`
34
35			`package body Ada.Strings.Wide_Wide_Fixed is`
36
37			`------------------------`
38			`-- Search Subprograms --`
39			`------------------------`
40
41			`function Index`
42			`(Source : Wide_Wide_String;`
43			`Pattern : Wide_Wide_String;`
44			`Going : Direction := Forward;`
45			`Mapping : Wide_Wide_Maps.Wide_Wide_Character_Mapping :=`
46			`Wide_Wide_Maps.Identity)`
47			`return Natural`
48			`renames Ada.Strings.Wide_Wide_Search.Index;`
49
50			`function Index`
51			`(Source : Wide_Wide_String;`
52			`Pattern : Wide_Wide_String;`
53			`Going : Direction := Forward;`
54			`Mapping : Wide_Wide_Maps.Wide_Wide_Character_Mapping_Function)`
55			`return Natural`
56			`renames Ada.Strings.Wide_Wide_Search.Index;`
57
58			`function Index`
59			`(Source : Wide_Wide_String;`
60			`Set : Wide_Wide_Maps.Wide_Wide_Character_Set;`
61			`Test : Membership := Inside;`
62			`Going : Direction := Forward) return Natural`
63			`renames Ada.Strings.Wide_Wide_Search.Index;`
64
65			`function Index`
66			`(Source : Wide_Wide_String;`
67			`Pattern : Wide_Wide_String;`
68			`From : Positive;`
69			`Going : Direction := Forward;`
70			`Mapping : Wide_Wide_Maps.Wide_Wide_Character_Mapping :=`
71			`Wide_Wide_Maps.Identity)`
72			`return Natural`
73			`renames Ada.Strings.Wide_Wide_Search.Index;`
74
75			`function Index`
76			`(Source : Wide_Wide_String;`
77			`Pattern : Wide_Wide_String;`
78			`From : Positive;`
79			`Going : Direction := Forward;`
80			`Mapping : Wide_Wide_Maps.Wide_Wide_Character_Mapping_Function)`
81			`return Natural`
82			`renames Ada.Strings.Wide_Wide_Search.Index;`
83
84			`function Index`
85			`(Source : Wide_Wide_String;`
86			`Set : Wide_Wide_Maps.Wide_Wide_Character_Set;`
87			`From : Positive;`
88			`Test : Membership := Inside;`
89			`Going : Direction := Forward) return Natural`
90			`renames Ada.Strings.Wide_Wide_Search.Index;`
91
92			`function Index_Non_Blank`
93			`(Source : Wide_Wide_String;`
94			`Going : Direction := Forward) return Natural`
95			`renames Ada.Strings.Wide_Wide_Search.Index_Non_Blank;`
96
97			`function Index_Non_Blank`
98			`(Source : Wide_Wide_String;`
99			`From : Positive;`
100			`Going : Direction := Forward) return Natural`
101			`renames Ada.Strings.Wide_Wide_Search.Index_Non_Blank;`
102
103			`function Count`
104			`(Source : Wide_Wide_String;`
105			`Pattern : Wide_Wide_String;`
106			`Mapping : Wide_Wide_Maps.Wide_Wide_Character_Mapping :=`
107			`Wide_Wide_Maps.Identity)`
108			`return Natural`
109			`renames Ada.Strings.Wide_Wide_Search.Count;`
110
111			`function Count`
112			`(Source : Wide_Wide_String;`
113			`Pattern : Wide_Wide_String;`
114			`Mapping : Wide_Wide_Maps.Wide_Wide_Character_Mapping_Function)`
115			`return Natural`
116			`renames Ada.Strings.Wide_Wide_Search.Count;`
117
118			`function Count`
119			`(Source : Wide_Wide_String;`
120			`Set : Wide_Wide_Maps.Wide_Wide_Character_Set) return Natural`
121			`renames Ada.Strings.Wide_Wide_Search.Count;`
122
123			`procedure Find_Token`
124			`(Source : Wide_Wide_String;`
125			`Set : Wide_Wide_Maps.Wide_Wide_Character_Set;`
126			`From : Positive;`
127			`Test : Membership;`
128			`First : out Positive;`
129			`Last : out Natural)`
130			`renames Ada.Strings.Wide_Wide_Search.Find_Token;`
131
132			`procedure Find_Token`
133			`(Source : Wide_Wide_String;`
134			`Set : Wide_Wide_Maps.Wide_Wide_Character_Set;`
135			`Test : Membership;`
136			`First : out Positive;`
137			`Last : out Natural)`
138			`renames Ada.Strings.Wide_Wide_Search.Find_Token;`
139
140			`---------`
141			`-- "*" --`
142			`---------`
143
144			`function "*"`
145			`(Left : Natural;`
146			`Right : Wide_Wide_Character) return Wide_Wide_String`
147			`is`
148			`Result : Wide_Wide_String (1 .. Left);`
149
150			`begin`
151			`for J in Result'Range loop`
152			`Result (J) := Right;`
153			`end loop;`
154
155			`return Result;`
156			`end "*";`
157
158			`function "*"`
159			`(Left : Natural;`
160			`Right : Wide_Wide_String) return Wide_Wide_String`
161			`is`
162			`Result : Wide_Wide_String (1 .. Left * Right'Length);`
163			`Ptr : Integer := 1;`
164
165			`begin`
166			`for J in 1 .. Left loop`
167			`Result (Ptr .. Ptr + Right'Length - 1) := Right;`
168			`Ptr := Ptr + Right'Length;`
169			`end loop;`
170
171			`return Result;`
172			`end "*";`
173
174			`------------`
175			`-- Delete --`
176			`------------`
177
178			`function Delete`
179			`(Source : Wide_Wide_String;`
180			`From : Positive;`
181			`Through : Natural) return Wide_Wide_String`
182			`is`
183			`begin`
184			`if From not in Source'Range`
185			`or else Through > Source'Last`
186			`then`
187			`raise Index_Error;`
188
189			`elsif From > Through then`
190			`return Source;`
191
192			`else`
193			`declare`
194			`Len : constant Integer := Source'Length - (Through - From + 1);`
195			`Result : constant Wide_Wide_String`
196			`(Source'First .. Source'First + Len - 1) :=`
197			`Source (Source'First .. From - 1) &`
198			`Source (Through + 1 .. Source'Last);`
199			`begin`
200			`return Result;`
201			`end;`
202			`end if;`
203			`end Delete;`
204
205			`procedure Delete`
206			`(Source : in out Wide_Wide_String;`
207			`From : Positive;`
208			`Through : Natural;`
209			`Justify : Alignment := Left;`
210			`Pad : Wide_Wide_Character := Wide_Wide_Space)`
211			`is`
212			`begin`
213			`Move (Source => Delete (Source, From, Through),`
214			`Target => Source,`
215			`Justify => Justify,`
216			`Pad => Pad);`
217			`end Delete;`
218
219			`----------`
220			`-- Head --`
221			`----------`
222
223			`function Head`
224			`(Source : Wide_Wide_String;`
225			`Count : Natural;`
226			`Pad : Wide_Wide_Character := Wide_Wide_Space) return Wide_Wide_String`
227			`is`
228			`Result : Wide_Wide_String (1 .. Count);`
229
230			`begin`
231			`if Count <= Source'Length then`
232			`Result := Source (Source'First .. Source'First + Count - 1);`
233
234			`else`
235			`Result (1 .. Source'Length) := Source;`
236
237			`for J in Source'Length + 1 .. Count loop`
238			`Result (J) := Pad;`
239			`end loop;`
240			`end if;`
241
242			`return Result;`
243			`end Head;`
244
245			`procedure Head`
246			`(Source : in out Wide_Wide_String;`
247			`Count : Natural;`
248			`Justify : Alignment := Left;`
249			`Pad : Wide_Wide_Character := Ada.Strings.Wide_Wide_Space)`
250			`is`
251			`begin`
252			`Move (Source => Head (Source, Count, Pad),`
253			`Target => Source,`
254			`Drop => Error,`
255			`Justify => Justify,`
256			`Pad => Pad);`
257			`end Head;`
258
259			`------------`
260			`-- Insert --`
261			`------------`
262
263			`function Insert`
264			`(Source : Wide_Wide_String;`
265			`Before : Positive;`
266			`New_Item : Wide_Wide_String) return Wide_Wide_String`
267			`is`
268			`Result : Wide_Wide_String (1 .. Source'Length + New_Item'Length);`
269
270			`begin`
271			`if Before < Source'First or else Before > Source'Last + 1 then`
272			`raise Index_Error;`
273			`end if;`
274
275			`Result := Source (Source'First .. Before - 1) & New_Item &`
276			`Source (Before .. Source'Last);`
277			`return Result;`
278			`end Insert;`
279
280			`procedure Insert`
281			`(Source : in out Wide_Wide_String;`
282			`Before : Positive;`
283			`New_Item : Wide_Wide_String;`
284			`Drop : Truncation := Error)`
285			`is`
286			`begin`
287			`Move (Source => Insert (Source, Before, New_Item),`
288			`Target => Source,`
289			`Drop => Drop);`
290			`end Insert;`
291
292			`----------`
293			`-- Move --`
294			`----------`
295
296			`procedure Move`
297			`(Source : Wide_Wide_String;`
298			`Target : out Wide_Wide_String;`
299			`Drop : Truncation := Error;`
300			`Justify : Alignment := Left;`
301			`Pad : Wide_Wide_Character := Wide_Wide_Space)`
302			`is`
303			`Sfirst : constant Integer := Source'First;`
304			`Slast : constant Integer := Source'Last;`
305			`Slength : constant Integer := Source'Length;`
306
307			`Tfirst : constant Integer := Target'First;`
308			`Tlast : constant Integer := Target'Last;`
309			`Tlength : constant Integer := Target'Length;`
310
311			`function Is_Padding (Item : Wide_Wide_String) return Boolean;`
312			`-- Determinbe if all characters in Item are pad characters`
313
314			`function Is_Padding (Item : Wide_Wide_String) return Boolean is`
315			`begin`
316			`for J in Item'Range loop`
317			`if Item (J) /= Pad then`
318			`return False;`
319			`end if;`
320			`end loop;`
321
322			`return True;`
323			`end Is_Padding;`
324
325			`-- Start of processing for Move`
326
327			`begin`
328			`if Slength = Tlength then`
329			`Target := Source;`
330
331			`elsif Slength > Tlength then`
332
333			`case Drop is`
334			`when Left =>`
335			`Target := Source (Slast - Tlength + 1 .. Slast);`
336
337			`when Right =>`
338			`Target := Source (Sfirst .. Sfirst + Tlength - 1);`
339
340			`when Error =>`
341			`case Justify is`
342			`when Left =>`
343			`if Is_Padding (Source (Sfirst + Tlength .. Slast)) then`
344			`Target :=`
345			`Source (Sfirst .. Sfirst + Target'Length - 1);`
346			`else`
347			`raise Length_Error;`
348			`end if;`
349
350			`when Right =>`
351			`if Is_Padding (Source (Sfirst .. Slast - Tlength)) then`
352			`Target := Source (Slast - Tlength + 1 .. Slast);`
353			`else`
354			`raise Length_Error;`
355			`end if;`
356
357			`when Center =>`
358			`raise Length_Error;`
359			`end case;`
360
361			`end case;`
362
363			`-- Source'Length < Target'Length`
364
365			`else`
366			`case Justify is`
367			`when Left =>`
368			`Target (Tfirst .. Tfirst + Slength - 1) := Source;`
369
370			`for J in Tfirst + Slength .. Tlast loop`
371			`Target (J) := Pad;`
372			`end loop;`
373
374			`when Right =>`
375			`for J in Tfirst .. Tlast - Slength loop`
376			`Target (J) := Pad;`
377			`end loop;`
378
379			`Target (Tlast - Slength + 1 .. Tlast) := Source;`
380
381			`when Center =>`
382			`declare`
383			`Front_Pad : constant Integer := (Tlength - Slength) / 2;`
384			`Tfirst_Fpad : constant Integer := Tfirst + Front_Pad;`
385
386			`begin`
387			`for J in Tfirst .. Tfirst_Fpad - 1 loop`
388			`Target (J) := Pad;`
389			`end loop;`
390
391			`Target (Tfirst_Fpad .. Tfirst_Fpad + Slength - 1) := Source;`
392
393			`for J in Tfirst_Fpad + Slength .. Tlast loop`
394			`Target (J) := Pad;`
395			`end loop;`
396			`end;`
397			`end case;`
398			`end if;`
399			`end Move;`
400
401			`---------------`
402			`-- Overwrite --`
403			`---------------`
404
405			`function Overwrite`
406			`(Source : Wide_Wide_String;`
407			`Position : Positive;`
408			`New_Item : Wide_Wide_String) return Wide_Wide_String`
409			`is`
410			`begin`
411			`if Position not in Source'First .. Source'Last + 1 then`
412			`raise Index_Error;`
413			`else`
414			`declare`
415			`Result_Length : constant Natural :=`
416			`Natural'Max`
417			`(Source'Length,`
418			`Position - Source'First + New_Item'Length);`
419
420			`Result : Wide_Wide_String (1 .. Result_Length);`
421
422			`begin`
423			`Result := Source (Source'First .. Position - 1) & New_Item &`
424			`Source (Position + New_Item'Length .. Source'Last);`
425			`return Result;`
426			`end;`
427			`end if;`
428			`end Overwrite;`
429
430			`procedure Overwrite`
431			`(Source : in out Wide_Wide_String;`
432			`Position : Positive;`
433			`New_Item : Wide_Wide_String;`
434			`Drop : Truncation := Right)`
435			`is`
436			`begin`
437			`Move (Source => Overwrite (Source, Position, New_Item),`
438			`Target => Source,`
439			`Drop => Drop);`
440			`end Overwrite;`
441
442			`-------------------`
443			`-- Replace_Slice --`
444			`-------------------`
445
446			`function Replace_Slice`
447			`(Source : Wide_Wide_String;`
448			`Low : Positive;`
449			`High : Natural;`
450			`By : Wide_Wide_String) return Wide_Wide_String`
451			`is`
452			`begin`
453			`if Low > Source'Last + 1 or else High < Source'First - 1 then`
454			`raise Index_Error;`
455			`end if;`
456
457			`if High >= Low then`
458			`declare`
459			`Front_Len : constant Integer :=`
460			`Integer'Max (0, Low - Source'First);`
461			`-- Length of prefix of Source copied to result`
462
463			`Back_Len : constant Integer :=`
464			`Integer'Max (0, Source'Last - High);`
465			`-- Length of suffix of Source copied to result`
466
467			`Result_Length : constant Integer :=`
468			`Front_Len + By'Length + Back_Len;`
469			`-- Length of result`
470
471			`Result : Wide_Wide_String (1 .. Result_Length);`
472
473			`begin`
474			`Result (1 .. Front_Len) := Source (Source'First .. Low - 1);`
475			`Result (Front_Len + 1 .. Front_Len + By'Length) := By;`
476			`Result (Front_Len + By'Length + 1 .. Result'Length) :=`
477			`Source (High + 1 .. Source'Last);`
478			`return Result;`
479			`end;`
480
481			`else`
482			`return Insert (Source, Before => Low, New_Item => By);`
483			`end if;`
484			`end Replace_Slice;`
485
486			`procedure Replace_Slice`
487			`(Source : in out Wide_Wide_String;`
488			`Low : Positive;`
489			`High : Natural;`
490			`By : Wide_Wide_String;`
491			`Drop : Truncation := Error;`
492			`Justify : Alignment := Left;`
493			`Pad : Wide_Wide_Character := Wide_Wide_Space)`
494			`is`
495			`begin`
496			`Move (Replace_Slice (Source, Low, High, By), Source, Drop, Justify, Pad);`
497			`end Replace_Slice;`
498
499			`----------`
500			`-- Tail --`
501			`----------`
502
503			`function Tail`
504			`(Source : Wide_Wide_String;`
505			`Count : Natural;`
506			`Pad : Wide_Wide_Character := Wide_Wide_Space) return Wide_Wide_String`
507			`is`
508			`Result : Wide_Wide_String (1 .. Count);`
509
510			`begin`
511			`if Count < Source'Length then`
512			`Result := Source (Source'Last - Count + 1 .. Source'Last);`
513
514			`-- Pad on left`
515
516			`else`
517			`for J in 1 .. Count - Source'Length loop`
518			`Result (J) := Pad;`
519			`end loop;`
520
521			`Result (Count - Source'Length + 1 .. Count) := Source;`
522			`end if;`
523
524			`return Result;`
525			`end Tail;`
526
527			`procedure Tail`
528			`(Source : in out Wide_Wide_String;`
529			`Count : Natural;`
530			`Justify : Alignment := Left;`
531			`Pad : Wide_Wide_Character := Ada.Strings.Wide_Wide_Space)`
532			`is`
533			`begin`
534			`Move (Source => Tail (Source, Count, Pad),`
535			`Target => Source,`
536			`Drop => Error,`
537			`Justify => Justify,`
538			`Pad => Pad);`
539			`end Tail;`
540
541			`---------------`
542			`-- Translate --`
543			`---------------`
544
545			`function Translate`
546			`(Source : Wide_Wide_String;`
547			`Mapping : Wide_Wide_Maps.Wide_Wide_Character_Mapping)`
548			`return Wide_Wide_String`
549			`is`
550			`Result : Wide_Wide_String (1 .. Source'Length);`
551
552			`begin`
553			`for J in Source'Range loop`
554			`Result (J - (Source'First - 1)) := Value (Mapping, Source (J));`
555			`end loop;`
556
557			`return Result;`
558			`end Translate;`
559
560			`procedure Translate`
561			`(Source : in out Wide_Wide_String;`
562			`Mapping : Wide_Wide_Maps.Wide_Wide_Character_Mapping)`
563			`is`
564			`begin`
565			`for J in Source'Range loop`
566			`Source (J) := Value (Mapping, Source (J));`
567			`end loop;`
568			`end Translate;`
569
570			`function Translate`
571			`(Source : Wide_Wide_String;`
572			`Mapping : Wide_Wide_Maps.Wide_Wide_Character_Mapping_Function)`
573			`return Wide_Wide_String`
574			`is`
575			`Result : Wide_Wide_String (1 .. Source'Length);`
576
577			`begin`
578			`for J in Source'Range loop`
579			`Result (J - (Source'First - 1)) := Mapping (Source (J));`
580			`end loop;`
581
582			`return Result;`
583			`end Translate;`
584
585			`procedure Translate`
586			`(Source : in out Wide_Wide_String;`
587			`Mapping : Wide_Wide_Maps.Wide_Wide_Character_Mapping_Function)`
588			`is`
589			`begin`
590			`for J in Source'Range loop`
591			`Source (J) := Mapping (Source (J));`
592			`end loop;`
593			`end Translate;`
594
595			`----------`
596			`-- Trim --`
597			`----------`
598
599			`function Trim`
600			`(Source : Wide_Wide_String;`
601			`Side : Trim_End) return Wide_Wide_String`
602			`is`
603			`Low : Natural := Source'First;`
604			`High : Natural := Source'Last;`
605
606			`begin`
607			`if Side = Left or else Side = Both then`
608			`while Low <= High and then Source (Low) = Wide_Wide_Space loop`
609			`Low := Low + 1;`
610			`end loop;`
611			`end if;`
612
613			`if Side = Right or else Side = Both then`
614			`while High >= Low and then Source (High) = Wide_Wide_Space loop`
615			`High := High - 1;`
616			`end loop;`
617			`end if;`
618
619			`-- All blanks case`
620
621			`if Low > High then`
622			`return "";`
623
624			`-- At least one non-blank`
625
626			`else`
627			`declare`
628			`Result : constant Wide_Wide_String (1 .. High - Low + 1) :=`
629			`Source (Low .. High);`
630
631			`begin`
632			`return Result;`
633			`end;`
634			`end if;`
635			`end Trim;`
636
637			`procedure Trim`
638			`(Source : in out Wide_Wide_String;`
639			`Side : Trim_End;`
640			`Justify : Alignment := Left;`
641			`Pad : Wide_Wide_Character := Wide_Wide_Space)`
642			`is`
643			`begin`
644			`Move (Source => Trim (Source, Side),`
645			`Target => Source,`
646			`Justify => Justify,`
647			`Pad => Pad);`
648			`end Trim;`
649
650			`function Trim`
651			`(Source : Wide_Wide_String;`
652			`Left : Wide_Wide_Maps.Wide_Wide_Character_Set;`
653			`Right : Wide_Wide_Maps.Wide_Wide_Character_Set) return Wide_Wide_String`
654			`is`
655			`Low : Natural := Source'First;`
656			`High : Natural := Source'Last;`
657
658			`begin`
659			`while Low <= High and then Is_In (Source (Low), Left) loop`
660			`Low := Low + 1;`
661			`end loop;`
662
663			`while High >= Low and then Is_In (Source (High), Right) loop`
664			`High := High - 1;`
665			`end loop;`
666
667			`-- Case where source comprises only characters in the sets`
668
669			`if Low > High then`
670			`return "";`
671			`else`
672			`declare`
673			`subtype WS is Wide_Wide_String (1 .. High - Low + 1);`
674
675			`begin`
676			`return WS (Source (Low .. High));`
677			`end;`
678			`end if;`
679			`end Trim;`
680
681			`procedure Trim`
682			`(Source : in out Wide_Wide_String;`
683			`Left : Wide_Wide_Maps.Wide_Wide_Character_Set;`
684			`Right : Wide_Wide_Maps.Wide_Wide_Character_Set;`
685			`Justify : Alignment := Strings.Left;`
686			`Pad : Wide_Wide_Character := Wide_Wide_Space)`
687			`is`
688			`begin`
689			`Move (Source => Trim (Source, Left, Right),`
690			`Target => Source,`
691			`Justify => Justify,`
692			`Pad => Pad);`
693			`end Trim;`
694
695			`end Ada.Strings.Wide_Wide_Fixed;`