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Comment:smaz_implementations-base_64: check end-of-input in Read_Code
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SHA1: 6c1f9bd68266700af4a5f768eeea9d4ac4b2f90c
User & Date: nat on 2017-02-27 21:27:58
Other Links: manifest | tags
Context
2017-02-28
20:13
smaz_implementations-base_4096: check end-of-input in Read_Code check-in: 3b9dae1e75 user: nat tags: trunk
2017-02-27
21:27
smaz_implementations-base_64: check end-of-input in Read_Code check-in: 6c1f9bd682 user: nat tags: trunk
2017-02-26
21:43
smaz_implementations-base_64_tools: new primitive to check end of input check-in: b05bcfb847 user: nat tags: trunk
Changes
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Modified src/natools-smaz_implementations-base_64.adb from [de5cce5c1a] to [d47cc06763]. 

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------------------------------------------------------------------------------
-- Copyright (c) 2016, Natacha Porté                                        --
-- Copyright (c) 2016-2017, Natacha Porté                                   --
--                                                                          --
-- Permission to use, copy, modify, and distribute this software for any    --
-- purpose with or without fee is hereby granted, provided that the above   --
-- copyright notice and this permission notice appear in all copies.        --
--                                                                          --
-- THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES --
-- WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF         --
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      Code : out Natools.Smaz_Implementations.Base_64_Tools.Base_64_Digit;
      Verbatim_Length : out Natural;
      Last_Code : in Natools.Smaz_Implementations.Base_64_Tools.Base_64_Digit;
      Variable_Length_Verbatim : in Boolean)
   is
      Ignored : String (1 .. 2);
      Offset_Backup : Ada.Streams.Stream_Element_Offset;
      Finished : Boolean;
   begin
      Tools.Next_Digit (Input, Offset, Code);
      Tools.Next_Digit_Or_End (Input, Offset, Code, Finished);

      if Finished then
         Code := Base_64_Tools.Base_64_Digit'Last;
         Verbatim_Length := 0;
         return;
      end if;

      if Code <= Last_Code then
         Verbatim_Length := 0;

      elsif Variable_Length_Verbatim then
         if Code < 63 then
            Verbatim_Length := 63 - Natural (Code);
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