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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_Maps;   use Ada.Strings.Wide_Maps;
with Ada.Strings.Wide_Search;
 
package body Ada.Strings.Wide_Fixed is
 
   ------------------------
   -- Search Subprograms --
   ------------------------
 
   function Index
     (Source  : Wide_String;
      Pattern : Wide_String;
      Going   : Direction := Forward;
      Mapping : Wide_Maps.Wide_Character_Mapping := Wide_Maps.Identity)
      return Natural
   renames Ada.Strings.Wide_Search.Index;
 
   function Index
     (Source  : Wide_String;
      Pattern : Wide_String;
      Going   : Direction := Forward;
      Mapping : Wide_Maps.Wide_Character_Mapping_Function) return Natural
   renames Ada.Strings.Wide_Search.Index;
 
   function Index
     (Source : Wide_String;
      Set    : Wide_Maps.Wide_Character_Set;
      Test   : Membership := Inside;
      Going  : Direction  := Forward) return Natural
   renames Ada.Strings.Wide_Search.Index;
 
   function Index
     (Source  : Wide_String;
      Pattern : Wide_String;
      From    : Positive;
      Going   : Direction := Forward;
      Mapping : Wide_Maps.Wide_Character_Mapping := Wide_Maps.Identity)
      return Natural
   renames Ada.Strings.Wide_Search.Index;
 
   function Index
     (Source  : Wide_String;
      Pattern : Wide_String;
      From    : Positive;
      Going   : Direction := Forward;
      Mapping : Wide_Maps.Wide_Character_Mapping_Function) return Natural
   renames Ada.Strings.Wide_Search.Index;
 
   function Index
     (Source  : Wide_String;
      Set     : Wide_Maps.Wide_Character_Set;
      From    : Positive;
      Test    : Membership := Inside;
      Going   : Direction := Forward) return Natural
   renames Ada.Strings.Wide_Search.Index;
 
   function Index_Non_Blank
     (Source : Wide_String;
      Going  : Direction := Forward) return Natural
   renames Ada.Strings.Wide_Search.Index_Non_Blank;
 
   function Index_Non_Blank
     (Source : Wide_String;
      From   : Positive;
      Going  : Direction := Forward) return Natural
   renames Ada.Strings.Wide_Search.Index_Non_Blank;
 
   function Count
     (Source  : Wide_String;
      Pattern : Wide_String;
      Mapping : Wide_Maps.Wide_Character_Mapping := Wide_Maps.Identity)
      return Natural
   renames Ada.Strings.Wide_Search.Count;
 
   function Count
     (Source  : Wide_String;
      Pattern : Wide_String;
      Mapping : Wide_Maps.Wide_Character_Mapping_Function) return Natural
   renames Ada.Strings.Wide_Search.Count;
 
   function Count
     (Source : Wide_String;
      Set    : Wide_Maps.Wide_Character_Set) return Natural
   renames Ada.Strings.Wide_Search.Count;
 
   procedure Find_Token
     (Source : Wide_String;
      Set    : Wide_Maps.Wide_Character_Set;
      From   : Positive;
      Test   : Membership;
      First  : out Positive;
      Last   : out Natural)
   renames Ada.Strings.Wide_Search.Find_Token;
 
   procedure Find_Token
     (Source : Wide_String;
      Set    : Wide_Maps.Wide_Character_Set;
      Test   : Membership;
      First  : out Positive;
      Last   : out Natural)
   renames Ada.Strings.Wide_Search.Find_Token;
 
   ---------
   -- "*" --
   ---------
 
   function "*"
     (Left  : Natural;
      Right : Wide_Character) return Wide_String
   is
      Result : Wide_String (1 .. Left);
 
   begin
      for J in Result'Range loop
         Result (J) := Right;
      end loop;
 
      return Result;
   end "*";
 
   function "*"
     (Left  : Natural;
      Right : Wide_String) return Wide_String
   is
      Result : 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_String;
      From    : Positive;
      Through : Natural) return 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_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_String;
      From    : Positive;
      Through : Natural;
      Justify : Alignment := Left;
      Pad     : Wide_Character := Wide_Space)
   is
   begin
      Move (Source  => Delete (Source, From, Through),
            Target  => Source,
            Justify => Justify,
            Pad     => Pad);
   end Delete;
 
   ----------
   -- Head --
   ----------
 
   function Head
     (Source : Wide_String;
      Count  : Natural;
      Pad    : Wide_Character := Wide_Space) return Wide_String
   is
      Result : 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_String;
      Count   : Natural;
      Justify : Alignment := Left;
      Pad     : Wide_Character := Ada.Strings.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_String;
      Before   : Positive;
      New_Item : Wide_String) return Wide_String
   is
      Result : 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_String;
      Before   : Positive;
      New_Item : 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_String;
      Target  : out Wide_String;
      Drop    : Truncation := Error;
      Justify : Alignment  := Left;
      Pad     : Wide_Character  := 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_String) return Boolean;
      --  Determine if all characters in Item are pad characters
 
      ----------------
      -- Is_Padding --
      ----------------
 
      function Is_Padding (Item : 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_String;
      Position : Positive;
      New_Item : Wide_String) return 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_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_String;
      Position : Positive;
      New_Item : 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_String;
      Low    : Positive;
      High   : Natural;
      By     : Wide_String) return 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_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_String;
      Low      : Positive;
      High     : Natural;
      By       : Wide_String;
      Drop     : Truncation := Error;
      Justify  : Alignment  := Left;
      Pad      : Wide_Character  := Wide_Space)
   is
   begin
      Move (Replace_Slice (Source, Low, High, By), Source, Drop, Justify, Pad);
   end Replace_Slice;
 
   ----------
   -- Tail --
   ----------
 
   function Tail
     (Source : Wide_String;
      Count  : Natural;
      Pad    : Wide_Character := Wide_Space) return Wide_String
   is
      Result : 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_String;
      Count   : Natural;
      Justify : Alignment := Left;
      Pad     : Wide_Character := Ada.Strings.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_String;
      Mapping : Wide_Maps.Wide_Character_Mapping) return Wide_String
   is
      Result : 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_String;
      Mapping : Wide_Maps.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_String;
      Mapping : Wide_Maps.Wide_Character_Mapping_Function) return Wide_String
   is
      Result : 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_String;
      Mapping : Wide_Maps.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_String;
      Side   : Trim_End) return 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_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_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_String (1 .. High - Low + 1) :=
                       Source (Low .. High);
 
         begin
            return Result;
         end;
      end if;
   end Trim;
 
   procedure Trim
     (Source  : in out Wide_String;
      Side    : Trim_End;
      Justify : Alignment      := Left;
      Pad     : Wide_Character := Wide_Space)
   is
   begin
      Move (Source  => Trim (Source, Side),
            Target  => Source,
            Justify => Justify,
            Pad     => Pad);
   end Trim;
 
   function Trim
      (Source : Wide_String;
       Left   : Wide_Maps.Wide_Character_Set;
       Right  : Wide_Maps.Wide_Character_Set) return 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_String (1 .. High - Low + 1);
 
         begin
            return WS (Source (Low .. High));
         end;
      end if;
   end Trim;
 
   procedure Trim
      (Source  : in out Wide_String;
       Left    : Wide_Maps.Wide_Character_Set;
       Right   : Wide_Maps.Wide_Character_Set;
       Justify : Alignment      := Strings.Left;
       Pad     : Wide_Character := Wide_Space)
   is
   begin
      Move (Source  => Trim (Source, Left, Right),
            Target  => Source,
            Justify => Justify,
            Pad     => Pad);
   end Trim;
 
end Ada.Strings.Wide_Fixed;

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Subversion Repositories openrisc

[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [gcc/] [ada/] [a-stwifi.adb] - Blame information for rev 706

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