1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
9 -- Copyright (C) 2000-2003 Ada Core Technologies, 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 2, 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. See the GNU General Public License --
17 -- for more details. You should have received a copy of the GNU General --
18 -- Public License distributed with GNAT; see file COPYING. If not, write --
19 -- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
20 -- Boston, MA 02110-1301, USA. --
22 -- As a special exception, if other files instantiate generics from this --
23 -- unit, or you link this unit with other files to produce an executable, --
24 -- this unit does not by itself cause the resulting executable to be --
25 -- covered by the GNU General Public License. This exception does not --
26 -- however invalidate any other reasons why the executable file might be --
27 -- covered by the GNU Public License. --
29 -- GNAT was originally developed by the GNAT team at New York University. --
30 -- Extensive contributions were provided by Ada Core Technologies Inc. --
32 ------------------------------------------------------------------------------
34 pragma Style_Checks
(All_Checks
);
35 -- Turn off alpha ordering check for subprograms, since we cannot
36 -- Put Finalize and Initialize in alpha order (see comments).
40 with Ada
.Strings
.Unbounded
;
41 with Ada
.Strings
.Fixed
;
42 with Ada
.Strings
.Maps
;
43 with Ada
.Unchecked_Deallocation
;
45 with GNAT
.Directory_Operations
;
46 with GNAT
.Dynamic_Tables
;
49 package body GNAT
.AWK
is
52 use Ada
.Strings
.Unbounded
;
60 type Mode
is abstract tagged null record;
61 -- This is the main type which is declared abstract. This type must be
62 -- derived for each split style.
64 type Mode_Access
is access Mode
'Class;
66 procedure Current_Line
(S
: Mode
; Session
: Session_Type
)
68 -- Split Session's current line using split mode.
70 ------------------------
71 -- Split on separator --
72 ------------------------
74 type Separator
(Size
: Positive) is new Mode
with record
75 Separators
: String (1 .. Size
);
78 procedure Current_Line
80 Session
: Session_Type
);
86 type Column
(Size
: Positive) is new Mode
with record
87 Columns
: Widths_Set
(1 .. Size
);
90 procedure Current_Line
(S
: Column
; Session
: Session_Type
);
94 procedure Free
is new Unchecked_Deallocation
95 (Split
.Mode
'Class, Split
.Mode_Access
);
101 type AWK_File
is access String;
103 package File_Table
is
104 new Dynamic_Tables
(AWK_File
, Natural, 1, 5, 50);
105 -- List of filename associated with a Session.
107 procedure Free
is new Unchecked_Deallocation
(String, AWK_File
);
113 type Field_Slice
is record
117 -- This is a field slice (First .. Last) in session's current line.
119 package Field_Table
is
120 new Dynamic_Tables
(Field_Slice
, Natural, 1, 10, 100);
121 -- List of fields for the current line.
127 -- Define all patterns style : exact string, regular expression, boolean
132 type Pattern
is abstract tagged null record;
133 -- This is the main type which is declared abstract. This type must be
134 -- derived for each patterns style.
136 type Pattern_Access
is access Pattern
'Class;
140 Session
: Session_Type
)
143 -- Returns True if P match for the current session and False otherwise.
145 procedure Release
(P
: in out Pattern
);
146 -- Release memory used by the pattern structure.
148 --------------------------
149 -- Exact string pattern --
150 --------------------------
152 type String_Pattern
is new Pattern
with record
153 Str
: Unbounded_String
;
159 Session
: Session_Type
)
162 --------------------------------
163 -- Regular expression pattern --
164 --------------------------------
166 type Pattern_Matcher_Access
is access Regpat
.Pattern_Matcher
;
168 type Regexp_Pattern
is new Pattern
with record
169 Regx
: Pattern_Matcher_Access
;
175 Session
: Session_Type
)
178 procedure Release
(P
: in out Regexp_Pattern
);
180 ------------------------------
181 -- Boolean function pattern --
182 ------------------------------
184 type Callback_Pattern
is new Pattern
with record
185 Pattern
: Pattern_Callback
;
189 (P
: Callback_Pattern
;
190 Session
: Session_Type
)
195 procedure Free
is new Unchecked_Deallocation
196 (Patterns
.Pattern
'Class, Patterns
.Pattern_Access
);
202 -- Define all action style : simple call, call with matches
206 type Action
is abstract tagged null record;
207 -- This is the main type which is declared abstract. This type must be
208 -- derived for each action style.
210 type Action_Access
is access Action
'Class;
214 Session
: Session_Type
)
216 -- Call action A as required.
222 type Simple_Action
is new Action
with record
223 Proc
: Action_Callback
;
228 Session
: Session_Type
);
230 -------------------------
231 -- Action with matches --
232 -------------------------
234 type Match_Action
is new Action
with record
235 Proc
: Match_Action_Callback
;
240 Session
: Session_Type
);
244 procedure Free
is new Unchecked_Deallocation
245 (Actions
.Action
'Class, Actions
.Action_Access
);
247 --------------------------
248 -- Pattern/Action table --
249 --------------------------
251 type Pattern_Action
is record
252 Pattern
: Patterns
.Pattern_Access
; -- If Pattern is True
253 Action
: Actions
.Action_Access
; -- Action will be called
256 package Pattern_Action_Table
is
257 new Dynamic_Tables
(Pattern_Action
, Natural, 1, 5, 50);
263 type Session_Data
is record
264 Current_File
: Text_IO
.File_Type
;
265 Current_Line
: Unbounded_String
;
266 Separators
: Split
.Mode_Access
;
267 Files
: File_Table
.Instance
;
268 File_Index
: Natural := 0;
269 Fields
: Field_Table
.Instance
;
270 Filters
: Pattern_Action_Table
.Instance
;
273 Matches
: Regpat
.Match_Array
(0 .. 100);
274 -- latest matches for the regexp pattern
278 new Unchecked_Deallocation
(Session_Data
, Session_Data_Access
);
284 procedure Initialize
(Session
: in out Session_Type
) is
286 Session
.Data
:= new Session_Data
;
288 -- Initialize separators
290 Session
.Data
.Separators
:=
291 new Split
.Separator
'(Default_Separators'Length, Default_Separators);
293 -- Initialize all tables
295 File_Table.Init (Session.Data.Files);
296 Field_Table.Init (Session.Data.Fields);
297 Pattern_Action_Table.Init (Session.Data.Filters);
300 -----------------------
301 -- Session Variables --
302 -----------------------
304 -- These must come after the body of Initialize, since they make
305 -- implicit calls to Initialize at elaboration time.
307 Def_Session : Session_Type;
308 Cur_Session : Session_Type;
314 -- Note: Finalize must come after Initialize and the definition
315 -- of the Def_Session and Cur_Session variables, since it references
318 procedure Finalize (Session : in out Session_Type) is
320 -- We release the session data only if it is not the default session.
322 if Session.Data /= Def_Session.Data then
325 -- Since we have closed the current session, set it to point
326 -- now to the default session.
328 Cur_Session.Data := Def_Session.Data;
332 ----------------------
333 -- Private Services --
334 ----------------------
336 function Always_True return Boolean;
337 -- A function that always returns True.
339 function Apply_Filters
340 (Session : Session_Type := Current_Session)
342 -- Apply any filters for which the Pattern is True for Session. It returns
343 -- True if a least one filters has been applied (i.e. associated action
344 -- callback has been called).
346 procedure Open_Next_File
347 (Session : Session_Type := Current_Session);
348 pragma Inline (Open_Next_File);
349 -- Open next file for Session closing current file if needed. It raises
350 -- End_Error if there is no more file in the table.
352 procedure Raise_With_Info
353 (E : Exceptions.Exception_Id;
355 Session : Session_Type);
356 pragma No_Return (Raise_With_Info);
357 -- Raises exception E with the message prepended with the current line
358 -- number and the filename if possible.
360 procedure Read_Line (Session : Session_Type);
361 -- Read a line for the Session and set Current_Line.
363 procedure Split_Line (Session : Session_Type);
364 -- Split session's Current_Line according to the session separators and
365 -- set the Fields table. This procedure can be called at any time.
367 ----------------------
368 -- Private Packages --
369 ----------------------
375 package body Actions is
383 Session : Session_Type)
385 pragma Unreferenced (Session);
397 Session : Session_Type)
400 A.Proc (Session.Data.Matches);
409 package body Patterns is
417 Session : Session_Type)
421 return P.Str = Field (P.Rank, Session);
430 Session : Session_Type)
433 use type Regpat.Match_Location;
437 (P.Regx.all, Field (P.Rank, Session), Session.Data.Matches);
438 return Session.Data.Matches (0) /= Regpat.No_Match;
446 (P : Callback_Pattern;
447 Session : Session_Type)
450 pragma Unreferenced (Session);
453 return P.Pattern.all;
460 procedure Release (P : in out Pattern) is
461 pragma Unreferenced (P);
471 procedure Release (P : in out Regexp_Pattern) is
472 procedure Free is new Unchecked_Deallocation
473 (Regpat.Pattern_Matcher, Pattern_Matcher_Access);
485 package body Split is
493 procedure Current_Line (S : Separator; Session : Session_Type) is
494 Line : constant String := To_String (Session.Data.Current_Line);
495 Fields : Field_Table.Instance renames Session.Data.Fields;
500 Seps : constant Maps.Character_Set := Maps.To_Set (S.Separators);
503 -- First field start here
507 -- Record the first field start position which is the first character
510 Field_Table.Increment_Last (Fields);
511 Fields.Table (Field_Table.Last (Fields)).First := Start;
514 -- Look for next separator
517 (Source => Line (Start .. Line'Last),
522 Fields.Table (Field_Table.Last (Fields)).Last := Stop - 1;
524 -- If separators are set to the default (space and tab) we skip
525 -- all spaces and tabs following current field.
527 if S.Separators = Default_Separators then
529 (Line (Stop + 1 .. Line'Last),
530 Maps.To_Set (Default_Separators),
541 -- Record in the field table the start of this new field
543 Field_Table.Increment_Last (Fields);
544 Fields.Table (Field_Table.Last (Fields)).First := Start;
548 Fields.Table (Field_Table.Last (Fields)).Last := Line'Last;
555 procedure Current_Line (S : Column; Session : Session_Type) is
556 Line : constant String := To_String (Session.Data.Current_Line);
557 Fields : Field_Table.Instance renames Session.Data.Fields;
558 Start : Positive := Line'First;
561 -- Record the first field start position which is the first character
564 for C in 1 .. S.Columns'Length loop
566 Field_Table.Increment_Last (Fields);
568 Fields.Table (Field_Table.Last (Fields)).First := Start;
570 Start := Start + S.Columns (C);
572 Fields.Table (Field_Table.Last (Fields)).Last := Start - 1;
576 -- If there is some remaining character on the line, add them in a
579 if Start - 1 < Line'Length then
581 Field_Table.Increment_Last (Fields);
583 Fields.Table (Field_Table.Last (Fields)).First := Start;
585 Fields.Table (Field_Table.Last (Fields)).Last := Line'Last;
597 Session : Session_Type := Current_Session)
599 Files : File_Table.Instance renames Session.Data.Files;
602 if OS_Lib.Is_Regular_File (Filename) then
603 File_Table.Increment_Last (Files);
604 Files.Table (File_Table.Last (Files)) := new String'(Filename
);
607 (File_Error
'Identity,
608 "File " & Filename
& " not found.",
620 Number_Of_Files_Added
: out Natural;
621 Session
: Session_Type
:= Current_Session
)
623 use Directory_Operations
;
626 Filename
: String (1 .. 200);
630 Number_Of_Files_Added
:= 0;
632 Open
(Dir
, Directory
);
635 Read
(Dir
, Filename
, Last
);
638 Add_File
(Filename
(1 .. Last
), Session
);
639 Number_Of_Files_Added
:= Number_Of_Files_Added
+ 1;
647 (File_Error
'Identity,
648 "Error scaning directory " & Directory
649 & " for files " & Filenames
& '.',
657 function Always_True
return Boolean is
666 function Apply_Filters
667 (Session
: Session_Type
:= Current_Session
)
670 Filters
: Pattern_Action_Table
.Instance
renames Session
.Data
.Filters
;
671 Results
: Boolean := False;
674 -- Iterate through the filters table, if pattern match call action.
676 for F
in 1 .. Pattern_Action_Table
.Last
(Filters
) loop
677 if Patterns
.Match
(Filters
.Table
(F
).Pattern
.all, Session
) then
679 Actions
.Call
(Filters
.Table
(F
).Action
.all, Session
);
690 procedure Close
(Session
: Session_Type
) is
691 Filters
: Pattern_Action_Table
.Instance
renames Session
.Data
.Filters
;
692 Files
: File_Table
.Instance
renames Session
.Data
.Files
;
695 -- Close current file if needed
697 if Text_IO
.Is_Open
(Session
.Data
.Current_File
) then
698 Text_IO
.Close
(Session
.Data
.Current_File
);
701 -- Release separators
703 Free
(Session
.Data
.Separators
);
705 -- Release Filters table
707 for F
in 1 .. Pattern_Action_Table
.Last
(Filters
) loop
708 Patterns
.Release
(Filters
.Table
(F
).Pattern
.all);
709 Free
(Filters
.Table
(F
).Pattern
);
710 Free
(Filters
.Table
(F
).Action
);
713 for F
in 1 .. File_Table
.Last
(Files
) loop
714 Free
(Files
.Table
(F
));
717 File_Table
.Set_Last
(Session
.Data
.Files
, 0);
718 Field_Table
.Set_Last
(Session
.Data
.Fields
, 0);
719 Pattern_Action_Table
.Set_Last
(Session
.Data
.Filters
, 0);
721 Session
.Data
.NR
:= 0;
722 Session
.Data
.FNR
:= 0;
723 Session
.Data
.File_Index
:= 0;
724 Session
.Data
.Current_Line
:= Null_Unbounded_String
;
727 ---------------------
728 -- Current_Session --
729 ---------------------
731 function Current_Session
return Session_Type
is
736 ---------------------
737 -- Default_Session --
738 ---------------------
740 function Default_Session
return Session_Type
is
749 function Discrete_Field
751 Session
: Session_Type
:= Current_Session
)
755 return Discrete
'Value (Field
(Rank
, Session
));
763 (Session
: Session_Type
:= Current_Session
)
767 return Session
.Data
.File_Index
= File_Table
.Last
(Session
.Data
.Files
)
768 and then End_Of_File
(Session
);
776 (Session
: Session_Type
:= Current_Session
)
780 return Text_IO
.End_Of_File
(Session
.Data
.Current_File
);
789 Session
: Session_Type
:= Current_Session
)
792 Fields
: Field_Table
.Instance
renames Session
.Data
.Fields
;
795 if Rank
> Number_Of_Fields
(Session
) then
797 (Field_Error
'Identity,
798 "Field number" & Count
'Image (Rank
) & " does not exist.",
803 -- Returns the whole line, this is what $0 does under Session_Type.
805 return To_String
(Session
.Data
.Current_Line
);
808 return Slice
(Session
.Data
.Current_Line
,
809 Fields
.Table
(Positive (Rank
)).First
,
810 Fields
.Table
(Positive (Rank
)).Last
);
816 Session
: Session_Type
:= Current_Session
)
820 return Integer'Value (Field
(Rank
, Session
));
823 when Constraint_Error
=>
825 (Field_Error
'Identity,
826 "Field number" & Count
'Image (Rank
)
827 & " cannot be converted to an integer.",
833 Session
: Session_Type
:= Current_Session
)
837 return Float'Value (Field
(Rank
, Session
));
840 when Constraint_Error
=>
842 (Field_Error
'Identity,
843 "Field number" & Count
'Image (Rank
)
844 & " cannot be converted to a float.",
853 (Session
: Session_Type
:= Current_Session
)
856 Files
: File_Table
.Instance
renames Session
.Data
.Files
;
859 if Session
.Data
.File_Index
= 0 then
862 return Files
.Table
(Session
.Data
.File_Index
).all;
870 procedure For_Every_Line
871 (Separators
: String := Use_Current
;
872 Filename
: String := Use_Current
;
873 Callbacks
: Callback_Mode
:= None
;
874 Session
: Session_Type
:= Current_Session
)
879 Open
(Separators
, Filename
, Session
);
881 while not End_Of_Data
(Session
) loop
883 Split_Line
(Session
);
885 if Callbacks
in Only
.. Pass_Through
then
888 pragma Unreferenced
(Discard
);
890 Discard
:= Apply_Filters
(Session
);
894 if Callbacks
/= Only
then
909 (Callbacks
: Callback_Mode
:= None
;
910 Session
: Session_Type
:= Current_Session
)
912 Filter_Active
: Boolean;
915 if not Text_IO
.Is_Open
(Session
.Data
.Current_File
) then
921 Split_Line
(Session
);
929 Filter_Active
:= Apply_Filters
(Session
);
930 exit when not Filter_Active
;
933 Filter_Active
:= Apply_Filters
(Session
);
940 ----------------------
941 -- Number_Of_Fields --
942 ----------------------
944 function Number_Of_Fields
945 (Session
: Session_Type
:= Current_Session
)
949 return Count
(Field_Table
.Last
(Session
.Data
.Fields
));
950 end Number_Of_Fields
;
952 --------------------------
953 -- Number_Of_File_Lines --
954 --------------------------
956 function Number_Of_File_Lines
957 (Session
: Session_Type
:= Current_Session
)
961 return Count
(Session
.Data
.FNR
);
962 end Number_Of_File_Lines
;
964 ---------------------
965 -- Number_Of_Files --
966 ---------------------
968 function Number_Of_Files
969 (Session
: Session_Type
:= Current_Session
)
972 Files
: File_Table
.Instance
renames Session
.Data
.Files
;
975 return File_Table
.Last
(Files
);
978 ---------------------
979 -- Number_Of_Lines --
980 ---------------------
982 function Number_Of_Lines
983 (Session
: Session_Type
:= Current_Session
)
987 return Count
(Session
.Data
.NR
);
995 (Separators
: String := Use_Current
;
996 Filename
: String := Use_Current
;
997 Session
: Session_Type
:= Current_Session
)
1000 if Text_IO
.Is_Open
(Session
.Data
.Current_File
) then
1001 raise Session_Error
;
1004 if Filename
/= Use_Current
then
1005 File_Table
.Init
(Session
.Data
.Files
);
1006 Add_File
(Filename
, Session
);
1009 if Separators
/= Use_Current
then
1010 Set_Field_Separators
(Separators
, Session
);
1013 Open_Next_File
(Session
);
1020 --------------------
1021 -- Open_Next_File --
1022 --------------------
1024 procedure Open_Next_File
1025 (Session
: Session_Type
:= Current_Session
)
1027 Files
: File_Table
.Instance
renames Session
.Data
.Files
;
1030 if Text_IO
.Is_Open
(Session
.Data
.Current_File
) then
1031 Text_IO
.Close
(Session
.Data
.Current_File
);
1034 Session
.Data
.File_Index
:= Session
.Data
.File_Index
+ 1;
1036 -- If there are no mores file in the table, raise End_Error
1038 if Session
.Data
.File_Index
> File_Table
.Last
(Files
) then
1043 (File
=> Session
.Data
.Current_File
,
1044 Name
=> Files
.Table
(Session
.Data
.File_Index
).all,
1045 Mode
=> Text_IO
.In_File
);
1053 (Separators
: String := Use_Current
;
1054 Filename
: String := Use_Current
;
1055 Session
: Session_Type
:= Current_Session
)
1057 Filter_Active
: Boolean;
1058 pragma Unreferenced
(Filter_Active
);
1061 Open
(Separators
, Filename
, Session
);
1063 while not End_Of_Data
(Session
) loop
1064 Get_Line
(None
, Session
);
1065 Filter_Active
:= Apply_Filters
(Session
);
1071 ---------------------
1072 -- Raise_With_Info --
1073 ---------------------
1075 procedure Raise_With_Info
1076 (E
: Exceptions
.Exception_Id
;
1078 Session
: Session_Type
)
1080 function Filename
return String;
1081 -- Returns current filename and "??" if the informations is not
1084 function Line
return String;
1085 -- Returns current line number without the leading space
1091 function Filename
return String is
1092 File
: constant String := AWK
.File
(Session
);
1106 function Line
return String is
1107 L
: constant String := Natural'Image (Session
.Data
.FNR
);
1110 return L
(2 .. L
'Last);
1113 -- Start of processing for Raise_With_Info
1116 Exceptions
.Raise_Exception
1118 '[' & Filename
& ':' & Line
& "] " & Message
);
1119 raise Constraint_Error
; -- to please GNAT as this is a No_Return proc
1120 end Raise_With_Info
;
1126 procedure Read_Line
(Session
: Session_Type
) is
1128 function Read_Line
return String;
1129 -- Read a line in the current file. This implementation is recursive
1130 -- and does not have a limitation on the line length.
1132 NR
: Natural renames Session
.Data
.NR
;
1133 FNR
: Natural renames Session
.Data
.FNR
;
1135 function Read_Line
return String is
1136 Buffer
: String (1 .. 1_024
);
1140 Text_IO
.Get_Line
(Session
.Data
.Current_File
, Buffer
, Last
);
1142 if Last
= Buffer
'Last then
1143 return Buffer
& Read_Line
;
1145 return Buffer
(1 .. Last
);
1149 -- Start of processing for Read_Line
1152 if End_Of_File
(Session
) then
1153 Open_Next_File
(Session
);
1157 Session
.Data
.Current_Line
:= To_Unbounded_String
(Read_Line
);
1170 Action
: Action_Callback
;
1171 Session
: Session_Type
:= Current_Session
)
1173 Filters
: Pattern_Action_Table
.Instance
renames Session
.Data
.Filters
;
1174 U_Pattern
: constant Unbounded_String
:= To_Unbounded_String
(Pattern
);
1177 Pattern_Action_Table
.Increment_Last
(Filters
);
1179 Filters
.Table
(Pattern_Action_Table
.Last
(Filters
)) :=
1180 (Pattern
=> new Patterns
.String_Pattern
'(U_Pattern, Field),
1181 Action => new Actions.Simple_Action'(Proc
=> Action
));
1186 Pattern
: GNAT
.Regpat
.Pattern_Matcher
;
1187 Action
: Action_Callback
;
1188 Session
: Session_Type
:= Current_Session
)
1190 Filters
: Pattern_Action_Table
.Instance
renames Session
.Data
.Filters
;
1192 A_Pattern
: constant Patterns
.Pattern_Matcher_Access
:=
1193 new Regpat
.Pattern_Matcher
'(Pattern);
1195 Pattern_Action_Table.Increment_Last (Filters);
1197 Filters.Table (Pattern_Action_Table.Last (Filters)) :=
1198 (Pattern => new Patterns.Regexp_Pattern'(A_Pattern
, Field
),
1199 Action
=> new Actions
.Simple_Action
'(Proc => Action));
1204 Pattern : GNAT.Regpat.Pattern_Matcher;
1205 Action : Match_Action_Callback;
1206 Session : Session_Type := Current_Session)
1208 Filters : Pattern_Action_Table.Instance renames Session.Data.Filters;
1210 A_Pattern : constant Patterns.Pattern_Matcher_Access :=
1211 new Regpat.Pattern_Matcher'(Pattern
);
1213 Pattern_Action_Table
.Increment_Last
(Filters
);
1215 Filters
.Table
(Pattern_Action_Table
.Last
(Filters
)) :=
1216 (Pattern
=> new Patterns
.Regexp_Pattern
'(A_Pattern, Field),
1217 Action => new Actions.Match_Action'(Proc
=> Action
));
1221 (Pattern
: Pattern_Callback
;
1222 Action
: Action_Callback
;
1223 Session
: Session_Type
:= Current_Session
)
1225 Filters
: Pattern_Action_Table
.Instance
renames Session
.Data
.Filters
;
1228 Pattern_Action_Table
.Increment_Last
(Filters
);
1230 Filters
.Table
(Pattern_Action_Table
.Last
(Filters
)) :=
1231 (Pattern
=> new Patterns
.Callback_Pattern
'(Pattern => Pattern),
1232 Action => new Actions.Simple_Action'(Proc
=> Action
));
1236 (Action
: Action_Callback
;
1237 Session
: Session_Type
:= Current_Session
)
1240 Register
(Always_True
'Access, Action
, Session
);
1247 procedure Set_Current
(Session
: Session_Type
) is
1249 Cur_Session
.Data
:= Session
.Data
;
1252 --------------------------
1253 -- Set_Field_Separators --
1254 --------------------------
1256 procedure Set_Field_Separators
1257 (Separators
: String := Default_Separators
;
1258 Session
: Session_Type
:= Current_Session
)
1261 Free
(Session
.Data
.Separators
);
1263 Session
.Data
.Separators
:=
1264 new Split
.Separator
'(Separators'Length, Separators);
1266 -- If there is a current line read, split it according to the new
1269 if Session.Data.Current_Line /= Null_Unbounded_String then
1270 Split_Line (Session);
1272 end Set_Field_Separators;
1274 ----------------------
1275 -- Set_Field_Widths --
1276 ----------------------
1278 procedure Set_Field_Widths
1279 (Field_Widths : Widths_Set;
1280 Session : Session_Type := Current_Session) is
1283 Free (Session.Data.Separators);
1285 Session.Data.Separators :=
1286 new Split.Column'(Field_Widths
'Length, Field_Widths
);
1288 -- If there is a current line read, split it according to
1289 -- the new separators.
1291 if Session
.Data
.Current_Line
/= Null_Unbounded_String
then
1292 Split_Line
(Session
);
1294 end Set_Field_Widths
;
1300 procedure Split_Line
(Session
: Session_Type
) is
1301 Fields
: Field_Table
.Instance
renames Session
.Data
.Fields
;
1304 Field_Table
.Init
(Fields
);
1306 Split
.Current_Line
(Session
.Data
.Separators
.all, Session
);
1310 -- We have declared two sessions but both should share the same data.
1311 -- The current session must point to the default session as its initial
1312 -- value. So first we release the session data then we set current
1313 -- session data to point to default session data.
1315 Free
(Cur_Session
.Data
);
1316 Cur_Session
.Data
:= Def_Session
.Data
;