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UTF-8 encode and decode: Difference between revisions
Added Ada.
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</lang>
=={{header|Ada}}==
{{works with|Ada|Ada|2012}}
<lang Ada>with Ada.Strings.Fixed; use Ada.Strings.Fixed;
with Ada.Strings.UTF_Encoding.Wide_Wide_Strings;
with Ada.Integer_Text_IO;
with Ada.Text_IO;
with Ada.Wide_Wide_Text_IO;
procedure UTF8_Encode_And_Decode
is
package TIO renames Ada.Text_IO;
package WWTIO renames Ada.Wide_Wide_Text_IO;
package WWS renames Ada.Strings.UTF_Encoding.Wide_Wide_Strings;
function To_Hex
(i : in Integer;
width : in Natural := 0;
fill : in Character := '0') return String
is
holder : String(1 .. 20);
begin
Ada.Integer_Text_IO.Put(holder, i, 16);
declare
hex : constant String := holder(Index(holder, "#")+1 .. holder'Last-1);
filled : String := Natural'Max(width, hex'Length) * fill;
begin
filled(filled'Last - hex'Length + 1 .. filled'Last) := hex;
return filled;
end;
end To_Hex;
input : constant Wide_Wide_String := "AöЖ€𝄞";
begin
TIO.Put_Line("Character Unicode UTF-8 encoding (hex)");
TIO.Put_Line(43 * '-');
for WWC of input loop
WWTIO.Put(WWC & " ");
declare
filled : String := 11 * ' ';
unicode : constant String := "U+" & To_Hex(Wide_Wide_Character'Pos(WWC), width => 4);
utf8_string : constant String := WWS.Encode((1 => WWC));
begin
filled(filled'First .. filled'First + unicode'Length - 1) := unicode;
TIO.Put(filled);
for C of utf8_string loop
TIO.Put(To_Hex(Character'Pos(C)) & " ");
end loop;
TIO.New_Line;
end;
end loop;
end UTF8_Encode_And_Decode;</lang>
{{out}}
<pre>Character Unicode UTF-8 encoding (hex)
-------------------------------------------
A U+0041 41
ö U+00F6 C3 B6
Ж U+0416 D0 96
€ U+20AC E2 82 AC
𝄞 U+1D11E F0 9D 84 9E
</pre>
=={{header|C}}==
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