-- --
-- B o d y --
-- --
--- Copyright (C) 1999-2007, AdaCore --
+-- Copyright (C) 1999-2010, AdaCore --
-- --
-- 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 2, or (at your option) any later ver- --
+-- 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. See the GNU General Public License --
--- for more details. You should have received a copy of the GNU General --
--- Public License distributed with GNAT; see file COPYING. If not, write --
--- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
--- Boston, MA 02110-1301, USA. --
+-- or FITNESS FOR A PARTICULAR PURPOSE. --
-- --
--- As a special exception, if other files instantiate generics from this --
--- unit, or you link this unit with other files to produce an executable, --
--- this unit does not by itself cause the resulting executable to be --
--- covered by the GNU General Public License. This exception does not --
--- however invalidate any other reasons why the executable file might be --
--- covered by the GNU Public License. --
+-- 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.Unbounded; use Ada.Strings.Unbounded;
with Ada.Text_IO;
+with GNAT.Case_Util;
+
package body GNAT.Calendar.Time_IO is
type Month_Name is
November,
December);
+ function Month_Name_To_Number
+ (Str : String) return Ada.Calendar.Month_Number;
+ -- Converts a string that contains an abbreviated month name to a month
+ -- number. Constraint_Error is raised if Str is not a valid month name.
+ -- Comparison is case insensitive
+
type Padding_Mode is (None, Zero, Space);
type Sec_Number is mod 2 ** 64;
end case;
end Pad_Char;
+ -- Local Declarations
+
NI : constant String := Sec_Number'Image (N);
NIP : constant String := Pad_Char & NI (2 .. NI'Last);
when 'w' =>
declare
- DOW : Natural range 0 .. 6;
-
+ DOW : constant Natural range 0 .. 6 :=
+ (if Day_Of_Week (Date) = Sunday
+ then 0
+ else Day_Name'Pos (Day_Of_Week (Date)));
begin
- if Day_Of_Week (Date) = Sunday then
- DOW := 0;
- else
- DOW := Day_Name'Pos (Day_Of_Week (Date));
- end if;
-
Result := Result & Image (DOW, Length => 1);
end;
return To_String (Result);
end Image;
+ --------------------------
+ -- Month_Name_To_Number --
+ --------------------------
+
+ function Month_Name_To_Number
+ (Str : String) return Ada.Calendar.Month_Number
+ is
+ subtype String3 is String (1 .. 3);
+ Abbrev_Upper_Month_Names :
+ constant array (Ada.Calendar.Month_Number) of String3 :=
+ ("JAN", "FEB", "MAR", "APR", "MAY", "JUN",
+ "JUL", "AUG", "SEP", "OCT", "NOV", "DEC");
+ -- Short version of the month names, used when parsing date strings
+
+ S : String := Str;
+
+ begin
+ GNAT.Case_Util.To_Upper (S);
+
+ for J in Abbrev_Upper_Month_Names'Range loop
+ if Abbrev_Upper_Month_Names (J) = S then
+ return J;
+ end if;
+ end loop;
+
+ return Abbrev_Upper_Month_Names'First;
+ end Month_Name_To_Number;
+
-----------
-- Value --
-----------
function Value (Date : String) return Ada.Calendar.Time is
- D : String (1 .. 19);
+ D : String (1 .. 21);
D_Length : constant Natural := Date'Length;
- Year : Year_Number;
- Month : Month_Number;
- Day : Day_Number;
- Hour : Hour_Number;
- Minute : Minute_Number;
- Second : Second_Number;
- Sub_Second : Second_Duration;
+ Year : Year_Number;
+ Month : Month_Number;
+ Day : Day_Number;
+ Hour : Hour_Number;
+ Minute : Minute_Number;
+ Second : Second_Number;
procedure Extract_Date
- (Year : out Year_Number;
- Month : out Month_Number;
- Day : out Day_Number;
- Y2K : Boolean := False);
- -- Try and extract a date value from string D. Set Y2K to True to
- -- account for the 20YY case. Raise Constraint_Error if the portion
- -- of D corresponding to the date is not well formatted.
+ (Year : out Year_Number;
+ Month : out Month_Number;
+ Day : out Day_Number;
+ Time_Start : out Natural);
+ -- Try and extract a date value from string D. Time_Start is set to the
+ -- first character that could be the start of time data.
procedure Extract_Time
(Index : Positive;
------------------
procedure Extract_Date
- (Year : out Year_Number;
- Month : out Month_Number;
- Day : out Day_Number;
- Y2K : Boolean := False)
+ (Year : out Year_Number;
+ Month : out Month_Number;
+ Day : out Day_Number;
+ Time_Start : out Natural)
is
- Delim_Index : Positive := 5;
-
begin
- if Y2K then
- Delim_Index := 3;
- end if;
+ if D (3) = '-' or else D (3) = '/' then
+ if D_Length = 8 or else D_Length = 17 then
- if (D (Delim_Index) /= '-' or else D (Delim_Index + 3) /= '-')
- and then
- (D (Delim_Index) /= '/' or else D (Delim_Index + 3) /= '/')
- then
- raise Constraint_Error;
- end if;
+ -- Formats are "yy*mm*dd" or "yy*mm*dd hh:mm:ss"
+
+ if D (6) /= D (3) then
+ raise Constraint_Error;
+ end if;
+
+ Year := Year_Number'Value ("20" & D (1 .. 2));
+ Month := Month_Number'Value (D (4 .. 5));
+ Day := Day_Number'Value (D (7 .. 8));
+ Time_Start := 10;
+
+ elsif D_Length = 10 or else D_Length = 19 then
+
+ -- Formats are "mm*dd*yyyy" or "mm*dd*yyyy hh:mm:ss"
+
+ if D (6) /= D (3) then
+ raise Constraint_Error;
+ end if;
+
+ Year := Year_Number'Value (D (7 .. 10));
+ Month := Month_Number'Value (D (1 .. 2));
+ Day := Day_Number'Value (D (4 .. 5));
+ Time_Start := 12;
+
+ elsif D_Length = 11 or else D_Length = 20 then
+
+ -- Formats are "dd*mmm*yyyy" or "dd*mmm*yyyy hh:mm:ss"
+
+ if D (7) /= D (3) then
+ raise Constraint_Error;
+ end if;
+
+ Year := Year_Number'Value (D (8 .. 11));
+ Month := Month_Name_To_Number (D (4 .. 6));
+ Day := Day_Number'Value (D (1 .. 2));
+ Time_Start := 13;
+
+ else
+ raise Constraint_Error;
+ end if;
+
+ elsif D (3) = ' ' then
+ if D_Length = 11 or else D_Length = 20 then
+
+ -- Possible formats are "dd mmm yyyy", "dd mmm yyyy hh:mm:ss"
+
+ if D (7) /= ' ' then
+ raise Constraint_Error;
+ end if;
+
+ Year := Year_Number'Value (D (8 .. 11));
+ Month := Month_Name_To_Number (D (4 .. 6));
+ Day := Day_Number'Value (D (1 .. 2));
+ Time_Start := 13;
+
+ else
+ raise Constraint_Error;
+ end if;
- if Y2K then
- Year := Year_Number'Value ("20" & D (1 .. 2));
- Month := Month_Number'Value (D (4 .. 5));
- Day := Day_Number'Value (D (7 .. 8));
else
- Year := Year_Number'Value (D (1 .. 4));
- Month := Month_Number'Value (D (6 .. 7));
- Day := Day_Number'Value (D (9 .. 10));
+ if D_Length = 8 or else D_Length = 17 then
+
+ -- Possible formats are "yyyymmdd" or "yyyymmdd hh:mm:ss"
+
+ Year := Year_Number'Value (D (1 .. 4));
+ Month := Month_Number'Value (D (5 .. 6));
+ Day := Day_Number'Value (D (7 .. 8));
+ Time_Start := 10;
+
+ elsif D_Length = 10 or else D_Length = 19 then
+
+ -- Possible formats are "yyyy*mm*dd" or "yyyy*mm*dd hh:mm:ss"
+
+ if (D (5) /= '-' and then D (5) /= '/')
+ or else D (8) /= D (5)
+ then
+ raise Constraint_Error;
+ end if;
+
+ Year := Year_Number'Value (D (1 .. 4));
+ Month := Month_Number'Value (D (6 .. 7));
+ Day := Day_Number'Value (D (9 .. 10));
+ Time_Start := 12;
+
+ elsif D_Length = 11 or else D_Length = 20 then
+
+ -- Possible formats are "yyyy*mmm*dd"
+
+ if (D (5) /= '-' and then D (5) /= '/')
+ or else D (9) /= D (5)
+ then
+ raise Constraint_Error;
+ end if;
+
+ Year := Year_Number'Value (D (1 .. 4));
+ Month := Month_Name_To_Number (D (6 .. 8));
+ Day := Day_Number'Value (D (10 .. 11));
+ Time_Start := 13;
+
+ elsif D_Length = 12 or else D_Length = 21 then
+
+ -- Formats are "mmm dd, yyyy" or "mmm dd, yyyy hh:mm:ss"
+
+ if D (4) /= ' '
+ or else D (7) /= ','
+ or else D (8) /= ' '
+ then
+ raise Constraint_Error;
+ end if;
+
+ Year := Year_Number'Value (D (9 .. 12));
+ Month := Month_Name_To_Number (D (1 .. 3));
+ Day := Day_Number'Value (D (5 .. 6));
+ Time_Start := 14;
+
+ else
+ raise Constraint_Error;
+ end if;
end if;
end Extract_Date;
Hour : out Hour_Number;
Minute : out Minute_Number;
Second : out Second_Number;
- Check_Space : Boolean := False) is
-
+ Check_Space : Boolean := False)
+ is
begin
- if Check_Space and then D (Index - 1) /= ' ' then
- raise Constraint_Error;
- end if;
+ -- If no time was specified in the string (do not allow trailing
+ -- character either)
- if D (Index + 2) /= ':' or else D (Index + 5) /= ':' then
- raise Constraint_Error;
- end if;
+ if Index = D_Length + 2 then
+ Hour := 0;
+ Minute := 0;
+ Second := 0;
+
+ else
+ -- Not enough characters left ?
+
+ if Index /= D_Length - 7 then
+ raise Constraint_Error;
+ end if;
+
+ if Check_Space and then D (Index - 1) /= ' ' then
+ raise Constraint_Error;
+ end if;
- Hour := Hour_Number'Value (D (Index .. Index + 1));
- Minute := Minute_Number'Value (D (Index + 3 .. Index + 4));
- Second := Second_Number'Value (D (Index + 6 .. Index + 7));
+ if D (Index + 2) /= ':' or else D (Index + 5) /= ':' then
+ raise Constraint_Error;
+ end if;
+
+ Hour := Hour_Number'Value (D (Index .. Index + 1));
+ Minute := Minute_Number'Value (D (Index + 3 .. Index + 4));
+ Second := Second_Number'Value (D (Index + 6 .. Index + 7));
+ end if;
end Extract_Time;
+ -- Local Declarations
+
+ Time_Start : Natural := 1;
+
-- Start of processing for Value
begin
- Split (Clock, Year, Month, Day, Hour, Minute, Second, Sub_Second);
- Sub_Second := 0.0;
-
-- Length checks
if D_Length /= 8
and then D_Length /= 10
+ and then D_Length /= 11
+ and then D_Length /= 12
and then D_Length /= 17
and then D_Length /= 19
+ and then D_Length /= 20
+ and then D_Length /= 21
then
raise Constraint_Error;
end if;
D (1 .. D_Length) := Date;
- -- Case 1:
-
- -- hh:mm:ss
- -- yy*mm*dd
-
- if D_Length = 8 then
-
- if D (3) = ':' then
- Extract_Time (1, Hour, Minute, Second);
- else
- Extract_Date (Year, Month, Day, True);
- Hour := 0;
- Minute := 0;
- Second := 0;
- end if;
-
- -- Case 2:
-
- -- yyyy*mm*dd
-
- elsif D_Length = 10 then
- Extract_Date (Year, Month, Day);
- Hour := 0;
- Minute := 0;
- Second := 0;
-
- -- Case 3:
-
- -- yy*mm*dd hh:mm:ss
-
- elsif D_Length = 17 then
- Extract_Date (Year, Month, Day, True);
- Extract_Time (10, Hour, Minute, Second, True);
-
- -- Case 4:
-
- -- yyyy*mm*dd hh:mm:ss
+ if D_Length /= 8 or else D (3) /= ':' then
+ Extract_Date (Year, Month, Day, Time_Start);
+ Extract_Time (Time_Start, Hour, Minute, Second, Check_Space => True);
else
- Extract_Date (Year, Month, Day);
- Extract_Time (12, Hour, Minute, Second, True);
+ declare
+ Discard : Second_Duration;
+ pragma Unreferenced (Discard);
+ begin
+ Split (Clock, Year, Month, Day, Hour, Minute, Second,
+ Sub_Second => Discard);
+ end;
+
+ Extract_Time (1, Hour, Minute, Second, Check_Space => False);
end if;
-- Sanity checks
raise Constraint_Error;
end if;
- return Time_Of (Year, Month, Day, Hour, Minute, Second, Sub_Second);
+ return Time_Of (Year, Month, Day, Hour, Minute, Second);
end Value;
--------------
-- Put_Time --
--------------
- procedure Put_Time
- (Date : Ada.Calendar.Time;
- Picture : Picture_String)
- is
+ procedure Put_Time (Date : Ada.Calendar.Time; Picture : Picture_String) is
begin
Ada.Text_IO.Put (Image (Date, Picture));
end Put_Time;
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