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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) 1992-2009, Free Software Foundation, Inc.         --
--                                                                          --
-- GNAT is free software;  you can  redistribute it  and/or modify it under --
-- terms of the  GNU General Public License as published  by the Free Soft- --
-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
-- or FITNESS FOR A PARTICULAR PURPOSE.                                     --
--                                                                          --
-- As a special exception under Section 7 of GPL version 3, you are granted --
-- additional permissions described in the GCC Runtime Library Exception,   --
-- version 3.1, as published by the Free Software Foundation.               --
--                                                                          --
-- You should have received a copy of the GNU General Public License and    --
-- a copy of the GCC Runtime Library Exception along with this program;     --
-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
-- <http://www.gnu.org/licenses/>.                                          --
--                                                                          --
-- GNAT was originally developed  by the GNAT team at  New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc.      --
--                                                                          --
------------------------------------------------------------------------------
 
with Ada.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;
      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
      Result_Length : Natural;
 
   begin
      if Low > Source'Last + 1 or else High < Source'First - 1 then
         raise Index_Error;
      else
         Result_Length :=
           Source'Length - Natural'Max (High - Low + 1, 0) + By'Length;
 
         declare
            Result : Wide_String (1 .. Result_Length);
 
         begin
            if High >= Low then
               Result :=
                  Source (Source'First .. Low - 1) & By &
                  Source (High + 1 .. Source'Last);
            else
               Result := Source (Source'First .. Low - 1) & By &
                         Source (Low .. Source'Last);
            end if;
 
            return Result;
         end;
      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_me

[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [ada/] [a-stwifi.adb] - Blame information for rev 299

Line No.	Rev	Author	Line
1	281	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) 1992-2009, 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			`Test : Membership;`
121			`First : out Positive;`
122			`Last : out Natural)`
123			`renames Ada.Strings.Wide_Search.Find_Token;`
124
125			`---------`
126			`-- "*" --`
127			`---------`
128
129			`function "*"`
130			`(Left : Natural;`
131			`Right : Wide_Character) return Wide_String`
132			`is`
133			`Result : Wide_String (1 .. Left);`
134
135			`begin`
136			`for J in Result'Range loop`
137			`Result (J) := Right;`
138			`end loop;`
139
140			`return Result;`
141			`end "*";`
142
143			`function "*"`
144			`(Left : Natural;`
145			`Right : Wide_String) return Wide_String`
146			`is`
147			`Result : Wide_String (1 .. Left * Right'Length);`
148			`Ptr : Integer := 1;`
149
150			`begin`
151			`for J in 1 .. Left loop`
152			`Result (Ptr .. Ptr + Right'Length - 1) := Right;`
153			`Ptr := Ptr + Right'Length;`
154			`end loop;`
155
156			`return Result;`
157			`end "*";`
158
159			`------------`
160			`-- Delete --`
161			`------------`
162
163			`function Delete`
164			`(Source : Wide_String;`
165			`From : Positive;`
166			`Through : Natural) return Wide_String`
167			`is`
168			`begin`
169			`if From not in Source'Range`
170			`or else Through > Source'Last`
171			`then`
172			`raise Index_Error;`
173
174			`elsif From > Through then`
175			`return Source;`
176
177			`else`
178			`declare`
179			`Len : constant Integer := Source'Length - (Through - From + 1);`
180			`Result : constant`
181			`Wide_String (Source'First .. Source'First + Len - 1) :=`
182			`Source (Source'First .. From - 1) &`
183			`Source (Through + 1 .. Source'Last);`
184			`begin`
185			`return Result;`
186			`end;`
187			`end if;`
188			`end Delete;`
189
190			`procedure Delete`
191			`(Source : in out Wide_String;`
192			`From : Positive;`
193			`Through : Natural;`
194			`Justify : Alignment := Left;`
195			`Pad : Wide_Character := Wide_Space)`
196			`is`
197			`begin`
198			`Move (Source => Delete (Source, From, Through),`
199			`Target => Source,`
200			`Justify => Justify,`
201			`Pad => Pad);`
202			`end Delete;`
203
204			`----------`
205			`-- Head --`
206			`----------`
207
208			`function Head`
209			`(Source : Wide_String;`
210			`Count : Natural;`
211			`Pad : Wide_Character := Wide_Space) return Wide_String`
212			`is`
213			`Result : Wide_String (1 .. Count);`
214
215			`begin`
216			`if Count <= Source'Length then`
217			`Result := Source (Source'First .. Source'First + Count - 1);`
218
219			`else`
220			`Result (1 .. Source'Length) := Source;`
221
222			`for J in Source'Length + 1 .. Count loop`
223			`Result (J) := Pad;`
224			`end loop;`
225			`end if;`
226
227			`return Result;`
228			`end Head;`
229
230			`procedure Head`
231			`(Source : in out Wide_String;`
232			`Count : Natural;`
233			`Justify : Alignment := Left;`
234			`Pad : Wide_Character := Ada.Strings.Wide_Space)`
235			`is`
236			`begin`
237			`Move (Source => Head (Source, Count, Pad),`
238			`Target => Source,`
239			`Drop => Error,`
240			`Justify => Justify,`
241			`Pad => Pad);`
242			`end Head;`
243
244			`------------`
245			`-- Insert --`
246			`------------`
247
248			`function Insert`
249			`(Source : Wide_String;`
250			`Before : Positive;`
251			`New_Item : Wide_String) return Wide_String`
252			`is`
253			`Result : Wide_String (1 .. Source'Length + New_Item'Length);`
254
255			`begin`
256			`if Before < Source'First or else Before > Source'Last + 1 then`
257			`raise Index_Error;`
258			`end if;`
259
260			`Result := Source (Source'First .. Before - 1) & New_Item &`
261			`Source (Before .. Source'Last);`
262			`return Result;`
263			`end Insert;`
264
265			`procedure Insert`
266			`(Source : in out Wide_String;`
267			`Before : Positive;`
268			`New_Item : Wide_String;`
269			`Drop : Truncation := Error)`
270			`is`
271			`begin`
272			`Move (Source => Insert (Source, Before, New_Item),`
273			`Target => Source,`
274			`Drop => Drop);`
275			`end Insert;`
276
277			`----------`
278			`-- Move --`
279			`----------`
280
281			`procedure Move`
282			`(Source : Wide_String;`
283			`Target : out Wide_String;`
284			`Drop : Truncation := Error;`
285			`Justify : Alignment := Left;`
286			`Pad : Wide_Character := Wide_Space)`
287			`is`
288			`Sfirst : constant Integer := Source'First;`
289			`Slast : constant Integer := Source'Last;`
290			`Slength : constant Integer := Source'Length;`
291
292			`Tfirst : constant Integer := Target'First;`
293			`Tlast : constant Integer := Target'Last;`
294			`Tlength : constant Integer := Target'Length;`
295
296			`function Is_Padding (Item : Wide_String) return Boolean;`
297			`-- Determine if all characters in Item are pad characters`
298
299			`----------------`
300			`-- Is_Padding --`
301			`----------------`
302
303			`function Is_Padding (Item : Wide_String) return Boolean is`
304			`begin`
305			`for J in Item'Range loop`
306			`if Item (J) /= Pad then`
307			`return False;`
308			`end if;`
309			`end loop;`
310
311			`return True;`
312			`end Is_Padding;`
313
314			`-- Start of processing for Move`
315
316			`begin`
317			`if Slength = Tlength then`
318			`Target := Source;`
319
320			`elsif Slength > Tlength then`
321
322			`case Drop is`
323			`when Left =>`
324			`Target := Source (Slast - Tlength + 1 .. Slast);`
325
326			`when Right =>`
327			`Target := Source (Sfirst .. Sfirst + Tlength - 1);`
328
329			`when Error =>`
330			`case Justify is`
331			`when Left =>`
332			`if Is_Padding (Source (Sfirst + Tlength .. Slast)) then`
333			`Target :=`
334			`Source (Sfirst .. Sfirst + Target'Length - 1);`
335			`else`
336			`raise Length_Error;`
337			`end if;`
338
339			`when Right =>`
340			`if Is_Padding (Source (Sfirst .. Slast - Tlength)) then`
341			`Target := Source (Slast - Tlength + 1 .. Slast);`
342			`else`
343			`raise Length_Error;`
344			`end if;`
345
346			`when Center =>`
347			`raise Length_Error;`
348			`end case;`
349
350			`end case;`
351
352			`-- Source'Length < Target'Length`
353
354			`else`
355			`case Justify is`
356			`when Left =>`
357			`Target (Tfirst .. Tfirst + Slength - 1) := Source;`
358
359			`for J in Tfirst + Slength .. Tlast loop`
360			`Target (J) := Pad;`
361			`end loop;`
362
363			`when Right =>`
364			`for J in Tfirst .. Tlast - Slength loop`
365			`Target (J) := Pad;`
366			`end loop;`
367
368			`Target (Tlast - Slength + 1 .. Tlast) := Source;`
369
370			`when Center =>`
371			`declare`
372			`Front_Pad : constant Integer := (Tlength - Slength) / 2;`
373			`Tfirst_Fpad : constant Integer := Tfirst + Front_Pad;`
374
375			`begin`
376			`for J in Tfirst .. Tfirst_Fpad - 1 loop`
377			`Target (J) := Pad;`
378			`end loop;`
379
380			`Target (Tfirst_Fpad .. Tfirst_Fpad + Slength - 1) := Source;`
381
382			`for J in Tfirst_Fpad + Slength .. Tlast loop`
383			`Target (J) := Pad;`
384			`end loop;`
385			`end;`
386			`end case;`
387			`end if;`
388			`end Move;`
389
390			`---------------`
391			`-- Overwrite --`
392			`---------------`
393
394			`function Overwrite`
395			`(Source : Wide_String;`
396			`Position : Positive;`
397			`New_Item : Wide_String) return Wide_String`
398			`is`
399			`begin`
400			`if Position not in Source'First .. Source'Last + 1 then`
401			`raise Index_Error;`
402			`else`
403			`declare`
404			`Result_Length : constant Natural :=`
405			`Natural'Max`
406			`(Source'Length,`
407			`Position - Source'First + New_Item'Length);`
408
409			`Result : Wide_String (1 .. Result_Length);`
410
411			`begin`
412			`Result := Source (Source'First .. Position - 1) & New_Item &`
413			`Source (Position + New_Item'Length .. Source'Last);`
414			`return Result;`
415			`end;`
416			`end if;`
417			`end Overwrite;`
418
419			`procedure Overwrite`
420			`(Source : in out Wide_String;`
421			`Position : Positive;`
422			`New_Item : Wide_String;`
423			`Drop : Truncation := Right)`
424			`is`
425			`begin`
426			`Move (Source => Overwrite (Source, Position, New_Item),`
427			`Target => Source,`
428			`Drop => Drop);`
429			`end Overwrite;`
430
431			`-------------------`
432			`-- Replace_Slice --`
433			`-------------------`
434
435			`function Replace_Slice`
436			`(Source : Wide_String;`
437			`Low : Positive;`
438			`High : Natural;`
439			`By : Wide_String) return Wide_String`
440			`is`
441			`Result_Length : Natural;`
442
443			`begin`
444			`if Low > Source'Last + 1 or else High < Source'First - 1 then`
445			`raise Index_Error;`
446			`else`
447			`Result_Length :=`
448			`Source'Length - Natural'Max (High - Low + 1, 0) + By'Length;`
449
450			`declare`
451			`Result : Wide_String (1 .. Result_Length);`
452
453			`begin`
454			`if High >= Low then`
455			`Result :=`
456			`Source (Source'First .. Low - 1) & By &`
457			`Source (High + 1 .. Source'Last);`
458			`else`
459			`Result := Source (Source'First .. Low - 1) & By &`
460			`Source (Low .. Source'Last);`
461			`end if;`
462
463			`return Result;`
464			`end;`
465			`end if;`
466			`end Replace_Slice;`
467
468			`procedure Replace_Slice`
469			`(Source : in out Wide_String;`
470			`Low : Positive;`
471			`High : Natural;`
472			`By : Wide_String;`
473			`Drop : Truncation := Error;`
474			`Justify : Alignment := Left;`
475			`Pad : Wide_Character := Wide_Space)`
476			`is`
477			`begin`
478			`Move (Replace_Slice (Source, Low, High, By), Source, Drop, Justify, Pad);`
479			`end Replace_Slice;`
480
481			`----------`
482			`-- Tail --`
483			`----------`
484
485			`function Tail`
486			`(Source : Wide_String;`
487			`Count : Natural;`
488			`Pad : Wide_Character := Wide_Space) return Wide_String`
489			`is`
490			`Result : Wide_String (1 .. Count);`
491
492			`begin`
493			`if Count < Source'Length then`
494			`Result := Source (Source'Last - Count + 1 .. Source'Last);`
495
496			`-- Pad on left`
497
498			`else`
499			`for J in 1 .. Count - Source'Length loop`
500			`Result (J) := Pad;`
501			`end loop;`
502
503			`Result (Count - Source'Length + 1 .. Count) := Source;`
504			`end if;`
505
506			`return Result;`
507			`end Tail;`
508
509			`procedure Tail`
510			`(Source : in out Wide_String;`
511			`Count : Natural;`
512			`Justify : Alignment := Left;`
513			`Pad : Wide_Character := Ada.Strings.Wide_Space)`
514			`is`
515			`begin`
516			`Move (Source => Tail (Source, Count, Pad),`
517			`Target => Source,`
518			`Drop => Error,`
519			`Justify => Justify,`
520			`Pad => Pad);`
521			`end Tail;`
522
523			`---------------`
524			`-- Translate --`
525			`---------------`
526
527			`function Translate`
528			`(Source : Wide_String;`
529			`Mapping : Wide_Maps.Wide_Character_Mapping) return Wide_String`
530			`is`
531			`Result : Wide_String (1 .. Source'Length);`
532
533			`begin`
534			`for J in Source'Range loop`
535			`Result (J - (Source'First - 1)) := Value (Mapping, Source (J));`
536			`end loop;`
537
538			`return Result;`
539			`end Translate;`
540
541			`procedure Translate`
542			`(Source : in out Wide_String;`
543			`Mapping : Wide_Maps.Wide_Character_Mapping)`
544			`is`
545			`begin`
546			`for J in Source'Range loop`
547			`Source (J) := Value (Mapping, Source (J));`
548			`end loop;`
549			`end Translate;`
550
551			`function Translate`
552			`(Source : Wide_String;`
553			`Mapping : Wide_Maps.Wide_Character_Mapping_Function) return Wide_String`
554			`is`
555			`Result : Wide_String (1 .. Source'Length);`
556
557			`begin`
558			`for J in Source'Range loop`
559			`Result (J - (Source'First - 1)) := Mapping (Source (J));`
560			`end loop;`
561
562			`return Result;`
563			`end Translate;`
564
565			`procedure Translate`
566			`(Source : in out Wide_String;`
567			`Mapping : Wide_Maps.Wide_Character_Mapping_Function)`
568			`is`
569			`begin`
570			`for J in Source'Range loop`
571			`Source (J) := Mapping (Source (J));`
572			`end loop;`
573			`end Translate;`
574
575			`----------`
576			`-- Trim --`
577			`----------`
578
579			`function Trim`
580			`(Source : Wide_String;`
581			`Side : Trim_End) return Wide_String`
582			`is`
583			`Low : Natural := Source'First;`
584			`High : Natural := Source'Last;`
585
586			`begin`
587			`if Side = Left or else Side = Both then`
588			`while Low <= High and then Source (Low) = Wide_Space loop`
589			`Low := Low + 1;`
590			`end loop;`
591			`end if;`
592
593			`if Side = Right or else Side = Both then`
594			`while High >= Low and then Source (High) = Wide_Space loop`
595			`High := High - 1;`
596			`end loop;`
597			`end if;`
598
599			`-- All blanks case`
600
601			`if Low > High then`
602			`return "";`
603
604			`-- At least one non-blank`
605
606			`else`
607			`declare`
608			`Result : constant Wide_String (1 .. High - Low + 1) :=`
609			`Source (Low .. High);`
610
611			`begin`
612			`return Result;`
613			`end;`
614			`end if;`
615			`end Trim;`
616
617			`procedure Trim`
618			`(Source : in out Wide_String;`
619			`Side : Trim_End;`
620			`Justify : Alignment := Left;`
621			`Pad : Wide_Character := Wide_Space)`
622			`is`
623			`begin`
624			`Move (Source => Trim (Source, Side),`
625			`Target => Source,`
626			`Justify => Justify,`
627			`Pad => Pad);`
628			`end Trim;`
629
630			`function Trim`
631			`(Source : Wide_String;`
632			`Left : Wide_Maps.Wide_Character_Set;`
633			`Right : Wide_Maps.Wide_Character_Set) return Wide_String`
634			`is`
635			`Low : Natural := Source'First;`
636			`High : Natural := Source'Last;`
637
638			`begin`
639			`while Low <= High and then Is_In (Source (Low), Left) loop`
640			`Low := Low + 1;`
641			`end loop;`
642
643			`while High >= Low and then Is_In (Source (High), Right) loop`
644			`High := High - 1;`
645			`end loop;`
646
647			`-- Case where source comprises only characters in the sets`
648
649			`if Low > High then`
650			`return "";`
651			`else`
652			`declare`
653			`subtype WS is Wide_String (1 .. High - Low + 1);`
654
655			`begin`
656			`return WS (Source (Low .. High));`
657			`end;`
658			`end if;`
659			`end Trim;`
660
661			`procedure Trim`
662			`(Source : in out Wide_String;`
663			`Left : Wide_Maps.Wide_Character_Set;`
664			`Right : Wide_Maps.Wide_Character_Set;`
665			`Justify : Alignment := Strings.Left;`
666			`Pad : Wide_Character := Wide_Space)`
667			`is`
668			`begin`
669			`Move (Source => Trim (Source, Left, Right),`
670			`Target => Source,`
671			`Justify => Justify,`
672			`Pad => Pad);`
673			`end Trim;`
674
675			`end Ada.Strings.Wide_Fixed;`