Perl

JSON Escape and Unescape a String

Demonstrates how to JSON escape or unescape a string. Chilkat2 Perl

use strict;
use warnings;
use Chilkat2;

my $sb = Chilkat2::StringBuilder->new;

$sb->Append('backslash: \\\, A: \u0041');
print $sb->GetAsString(), "\n";

# The output is:
#    backslash: \\, A: \u0041

# The keyword "json" can be used
# to escape and unescape.  To escape is to encode.  To unescape is to decode.

# Unescape (decode) the string in sb.
$sb->Decode('json', 'utf-8');
print $sb->GetAsString(), "\n";

# After JSON unescaping:
#    backslash: \, A: A

# Now JSON escape the string.
$sb->Encode('json', 'utf-8');
print $sb->GetAsString(), "\n";

# After JSON escaping:
#    backslash: \\, A: A

# Note: The "A" is not escaped to "\u0041" because there is no need.
# The "\uXXXX" format would be produced for non-printable control chars.