1 ------------------------------------------------------------------------------
3 -- GNAT RUN-TIME COMPONENTS --
5 -- A D A . S T R I N G S . W I D E _ F I X E D --
9 -- Copyright (C) 1992-2010, Free Software Foundation, Inc. --
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. --
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. --
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/>. --
27 -- GNAT was originally developed by the GNAT team at New York University. --
28 -- Extensive contributions were provided by Ada Core Technologies Inc. --
30 ------------------------------------------------------------------------------
32 with Ada.Strings.Wide_Wide_Maps; use Ada.Strings.Wide_Wide_Maps;
33 with Ada.Strings.Wide_Wide_Search;
35 package body Ada.Strings.Wide_Wide_Fixed is
37 ------------------------
38 -- Search Subprograms --
39 ------------------------
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)
48 renames Ada.Strings.Wide_Wide_Search.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)
56 renames Ada.Strings.Wide_Wide_Search.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;
66 (Source : Wide_Wide_String;
67 Pattern : Wide_Wide_String;
69 Going : Direction := Forward;
70 Mapping : Wide_Wide_Maps.Wide_Wide_Character_Mapping :=
71 Wide_Wide_Maps.Identity)
73 renames Ada.Strings.Wide_Wide_Search.Index;
76 (Source : Wide_Wide_String;
77 Pattern : Wide_Wide_String;
79 Going : Direction := Forward;
80 Mapping : Wide_Wide_Maps.Wide_Wide_Character_Mapping_Function)
82 renames Ada.Strings.Wide_Wide_Search.Index;
85 (Source : Wide_Wide_String;
86 Set : Wide_Wide_Maps.Wide_Wide_Character_Set;
88 Test : Membership := Inside;
89 Going : Direction := Forward) return Natural
90 renames Ada.Strings.Wide_Wide_Search.Index;
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;
97 function Index_Non_Blank
98 (Source : Wide_Wide_String;
100 Going : Direction := Forward) return Natural
101 renames Ada.Strings.Wide_Wide_Search.Index_Non_Blank;
104 (Source : Wide_Wide_String;
105 Pattern : Wide_Wide_String;
106 Mapping : Wide_Wide_Maps.Wide_Wide_Character_Mapping :=
107 Wide_Wide_Maps.Identity)
109 renames Ada.Strings.Wide_Wide_Search.Count;
112 (Source : Wide_Wide_String;
113 Pattern : Wide_Wide_String;
114 Mapping : Wide_Wide_Maps.Wide_Wide_Character_Mapping_Function)
116 renames Ada.Strings.Wide_Wide_Search.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;
124 (Source : Wide_Wide_String;
125 Set : Wide_Wide_Maps.Wide_Wide_Character_Set;
128 First : out Positive;
130 renames Ada.Strings.Wide_Wide_Search.Find_Token;
133 (Source : Wide_Wide_String;
134 Set : Wide_Wide_Maps.Wide_Wide_Character_Set;
136 First : out Positive;
138 renames Ada.Strings.Wide_Wide_Search.Find_Token;
146 Right : Wide_Wide_Character) return Wide_Wide_String
148 Result : Wide_Wide_String (1 .. Left);
151 for J in Result'Range loop
160 Right : Wide_Wide_String) return Wide_Wide_String
162 Result : Wide_Wide_String (1 .. Left * Right'Length);
166 for J in 1 .. Left loop
167 Result (Ptr .. Ptr + Right'Length - 1) := Right;
168 Ptr := Ptr + Right'Length;
179 (Source : Wide_Wide_String;
181 Through : Natural) return Wide_Wide_String
184 if From not in Source'Range
185 or else Through > Source'Last
189 elsif From > Through then
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);
206 (Source : in out Wide_Wide_String;
209 Justify : Alignment := Left;
210 Pad : Wide_Wide_Character := Wide_Wide_Space)
213 Move (Source => Delete (Source, From, Through),
224 (Source : Wide_Wide_String;
226 Pad : Wide_Wide_Character := Wide_Wide_Space) return Wide_Wide_String
228 Result : Wide_Wide_String (1 .. Count);
231 if Count <= Source'Length then
232 Result := Source (Source'First .. Source'First + Count - 1);
235 Result (1 .. Source'Length) := Source;
237 for J in Source'Length + 1 .. Count loop
246 (Source : in out Wide_Wide_String;
248 Justify : Alignment := Left;
249 Pad : Wide_Wide_Character := Ada.Strings.Wide_Wide_Space)
252 Move (Source => Head (Source, Count, Pad),
264 (Source : Wide_Wide_String;
266 New_Item : Wide_Wide_String) return Wide_Wide_String
268 Result : Wide_Wide_String (1 .. Source'Length + New_Item'Length);
271 if Before < Source'First or else Before > Source'Last + 1 then
275 Result := Source (Source'First .. Before - 1) & New_Item &
276 Source (Before .. Source'Last);
281 (Source : in out Wide_Wide_String;
283 New_Item : Wide_Wide_String;
284 Drop : Truncation := Error)
287 Move (Source => Insert (Source, Before, New_Item),
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)
303 Sfirst : constant Integer := Source'First;
304 Slast : constant Integer := Source'Last;
305 Slength : constant Integer := Source'Length;
307 Tfirst : constant Integer := Target'First;
308 Tlast : constant Integer := Target'Last;
309 Tlength : constant Integer := Target'Length;
311 function Is_Padding (Item : Wide_Wide_String) return Boolean;
312 -- Determinbe if all characters in Item are pad characters
314 function Is_Padding (Item : Wide_Wide_String) return Boolean is
316 for J in Item'Range loop
317 if Item (J) /= Pad then
325 -- Start of processing for Move
328 if Slength = Tlength then
331 elsif Slength > Tlength then
335 Target := Source (Slast - Tlength + 1 .. Slast);
338 Target := Source (Sfirst .. Sfirst + Tlength - 1);
343 if Is_Padding (Source (Sfirst + Tlength .. Slast)) then
345 Source (Sfirst .. Sfirst + Target'Length - 1);
351 if Is_Padding (Source (Sfirst .. Slast - Tlength)) then
352 Target := Source (Slast - Tlength + 1 .. Slast);
363 -- Source'Length < Target'Length
368 Target (Tfirst .. Tfirst + Slength - 1) := Source;
370 for J in Tfirst + Slength .. Tlast loop
375 for J in Tfirst .. Tlast - Slength loop
379 Target (Tlast - Slength + 1 .. Tlast) := Source;
383 Front_Pad : constant Integer := (Tlength - Slength) / 2;
384 Tfirst_Fpad : constant Integer := Tfirst + Front_Pad;
387 for J in Tfirst .. Tfirst_Fpad - 1 loop
391 Target (Tfirst_Fpad .. Tfirst_Fpad + Slength - 1) := Source;
393 for J in Tfirst_Fpad + Slength .. Tlast loop
406 (Source : Wide_Wide_String;
408 New_Item : Wide_Wide_String) return Wide_Wide_String
411 if Position not in Source'First .. Source'Last + 1 then
415 Result_Length : constant Natural :=
418 Position - Source'First + New_Item'Length);
420 Result : Wide_Wide_String (1 .. Result_Length);
423 Result := Source (Source'First .. Position - 1) & New_Item &
424 Source (Position + New_Item'Length .. Source'Last);
431 (Source : in out Wide_Wide_String;
433 New_Item : Wide_Wide_String;
434 Drop : Truncation := Right)
437 Move (Source => Overwrite (Source, Position, New_Item),
446 function Replace_Slice
447 (Source : Wide_Wide_String;
450 By : Wide_Wide_String) return Wide_Wide_String
453 if Low > Source'Last + 1 or else High < Source'First - 1 then
459 Front_Len : constant Integer :=
460 Integer'Max (0, Low - Source'First);
461 -- Length of prefix of Source copied to result
463 Back_Len : constant Integer :=
464 Integer'Max (0, Source'Last - High);
465 -- Length of suffix of Source copied to result
467 Result_Length : constant Integer :=
468 Front_Len + By'Length + Back_Len;
471 Result : Wide_Wide_String (1 .. Result_Length);
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);
482 return Insert (Source, Before => Low, New_Item => By);
486 procedure Replace_Slice
487 (Source : in out Wide_Wide_String;
490 By : Wide_Wide_String;
491 Drop : Truncation := Error;
492 Justify : Alignment := Left;
493 Pad : Wide_Wide_Character := Wide_Wide_Space)
496 Move (Replace_Slice (Source, Low, High, By), Source, Drop, Justify, Pad);
504 (Source : Wide_Wide_String;
506 Pad : Wide_Wide_Character := Wide_Wide_Space) return Wide_Wide_String
508 Result : Wide_Wide_String (1 .. Count);
511 if Count < Source'Length then
512 Result := Source (Source'Last - Count + 1 .. Source'Last);
517 for J in 1 .. Count - Source'Length loop
521 Result (Count - Source'Length + 1 .. Count) := Source;
528 (Source : in out Wide_Wide_String;
530 Justify : Alignment := Left;
531 Pad : Wide_Wide_Character := Ada.Strings.Wide_Wide_Space)
534 Move (Source => Tail (Source, Count, Pad),
546 (Source : Wide_Wide_String;
547 Mapping : Wide_Wide_Maps.Wide_Wide_Character_Mapping)
548 return Wide_Wide_String
550 Result : Wide_Wide_String (1 .. Source'Length);
553 for J in Source'Range loop
554 Result (J - (Source'First - 1)) := Value (Mapping, Source (J));
561 (Source : in out Wide_Wide_String;
562 Mapping : Wide_Wide_Maps.Wide_Wide_Character_Mapping)
565 for J in Source'Range loop
566 Source (J) := Value (Mapping, Source (J));
571 (Source : Wide_Wide_String;
572 Mapping : Wide_Wide_Maps.Wide_Wide_Character_Mapping_Function)
573 return Wide_Wide_String
575 Result : Wide_Wide_String (1 .. Source'Length);
578 for J in Source'Range loop
579 Result (J - (Source'First - 1)) := Mapping (Source (J));
586 (Source : in out Wide_Wide_String;
587 Mapping : Wide_Wide_Maps.Wide_Wide_Character_Mapping_Function)
590 for J in Source'Range loop
591 Source (J) := Mapping (Source (J));
600 (Source : Wide_Wide_String;
601 Side : Trim_End) return Wide_Wide_String
603 Low : Natural := Source'First;
604 High : Natural := Source'Last;
607 if Side = Left or else Side = Both then
608 while Low <= High and then Source (Low) = Wide_Wide_Space loop
613 if Side = Right or else Side = Both then
614 while High >= Low and then Source (High) = Wide_Wide_Space loop
624 -- At least one non-blank
628 Result : constant Wide_Wide_String (1 .. High - Low + 1) :=
629 Source (Low .. High);
638 (Source : in out Wide_Wide_String;
640 Justify : Alignment := Left;
641 Pad : Wide_Wide_Character := Wide_Wide_Space)
644 Move (Source => Trim (Source, Side),
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
655 Low : Natural := Source'First;
656 High : Natural := Source'Last;
659 while Low <= High and then Is_In (Source (Low), Left) loop
663 while High >= Low and then Is_In (Source (High), Right) loop
667 -- Case where source comprises only characters in the sets
673 subtype WS is Wide_Wide_String (1 .. High - Low + 1);
676 return WS (Source (Low .. High));
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)
689 Move (Source => Trim (Source, Left, Right),
695 end Ada.Strings.Wide_Wide_Fixed;