Tokenize a string with escaping: Difference between revisions
Ada version
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</pre>
=={{header|Ada}}==
<lang Ada>with Ada.Text_Io;
with Ada.Containers.Indefinite_Vectors;
with Ada.Strings.Unbounded;
procedure Tokenize is
package String_Vectors is
new Ada.Containers.Indefinite_Vectors (Positive, String);
use String_Vectors;
function Split (Text : String;
Separator : Character := '|';
Escape : Character := '^') return Vector
is
use Ada.Strings.Unbounded;
Result : Vector;
Escaped : Boolean := False;
Accu : Unbounded_String;
begin
for Char of Text loop
case Escaped is
when False =>
if Char = Escape then
Escaped := True;
elsif Char = Separator then
Append (Result, To_String (Accu));
Accu := Null_Unbounded_String;
else
Append (Accu, Char);
end if;
when True =>
Append (Accu, Char);
Escaped := False;
end case;
end loop;
Append (Result, To_String (Accu));
return Result;
end Split;
procedure Put_Vector (List : Vector) is
use Ada.Text_Io;
begin
for Element of List loop
Put ("'"); Put (Element); Put ("'"); New_Line;
end loop;
end Put_Vector;
begin
Put_Vector (Split ("one^|uno||three^^^^|four^^^|^cuatro|"));
end Tokenize;</lang>
{{out}}
<pre>'one|uno'
''
'three^^'
'four^|cuatro'
''</pre>
=={{header|ALGOL 68}}==
| |||