URL decoding: Difference between revisions
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end if;
end Test_URL_Decode;</lang>
=={{header|ALGOL 68}}==
{{works with|ALGOL 68G|Any - tested with release 2.8.3.win32}}
<lang algol68># returns c decoded as a hex digit #
PROC hex value = ( CHAR c )INT: IF c >= "0" AND c <= "9" THEN ABS c - ABS "0"
ELIF c >= "A" AND c <= "F" THEN 10 + ( ABS c - ABS "A" )
ELSE 10 + ( ABS c - ABS "a" )
FI;
# returns the URL encoded string decoded - minimal error handling #
PROC url decode = ( STRING encoded )STRING:
BEGIN
[ LWB encoded : UPB encoded ]CHAR result;
INT result pos := LWB encoded;
INT pos := LWB encoded;
INT max pos := UPB encoded;
INT max encoded := max pos - 3;
WHILE pos <= UPB encoded
DO
IF encoded[ pos ] /= "%" AND pos <= max encoded
THEN
# not a coded character #
result[ result pos ] := encoded[ pos ];
pos +:= 1
ELSE
# have an encoded character #
result[ result pos ] := REPR ( ( 16 * hex value( encoded[ pos + 1 ] ) )
+ hex value( encoded[ pos + 2 ] )
);
pos +:= 3
FI;
result pos +:= 1
OD;
result[ LWB result : result pos - 1 ]
END # url decode # ;
# test the url decode procedure #
print( ( url decode( "http%3A%2F%2Ffoo%20bar%2F" ), newline ) );
print( ( url decode( "google.com/search?q=%60Abdu%27l-Bah%C3%A1" ), newline ) )</lang>
{{out}}
<pre>
http://foo bar/
google.com/search?q=`Abdu'l-Bahá
</pre>
=={{header|Apex}}==
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