NAME

Sisimai::String - String related class

SYNOPSIS

    use Sisimai::String;
    my $s = 'envelope-sender@example.jp';
    my $r = 'envelope-recipient@example.org';
    my $t = time();
    print Sisimai::String->token($s, $r, $t);  # 2d635de42a44c54b291dda00a93ac27b
    print Sisimai::String->is_8bit(\'猫');     # 1
    print Sisimai::String->sweep(' neko cat ');# 'neko cat'
    print Sisimai::String->to_utf8('^[$BG-^[(B', 'iso-2022-jp');  # 猫
    print Sisimai::String->to_plain('<html>neko</html>');   # neko

DESCRIPTION

Sisimai::String provide utilities for dealing string

CLASS METHODS

"token(sender, recipient)"

token() generates a token: Unique string generated by an envelope sender address and a envelope recipient address.

    my $s = 'envelope-sender@example.jp';
    my $r = 'envelope-recipient@example.org';
    print Sisimai::String->token($s, $r);    # 2d635de42a44c54b291dda00a93ac27b

"is_8bit(Reference to String)"

is_8bit() checks the argument include any 8bit character or not.

    print Sisimai::String->is_8bit(\'cat');  # 0;
    print Sisimai::String->is_8bit(\'ねこ'); # 1;

"sweep(String)"

sweep() clean the argument string up: remove trailing spaces, squeeze spaces.

    print Sisimai::String->sweep(' cat neko ');  # 'cat neko';
    print Sisimai::String->sweep(' nyaa   !!');  # 'nyaa !!';

"aligned" checks if each element of the 2nd argument is aligned in the 1st argument or not.

    my $v = 'Final-Recipient: rfc822; <nekochan@example.jp>';
    print Sisimai::String->aligned(\$v, ['rfc822', '<', '@', '>']);  # 1
    print Sisimai::String->aligned(\$v, [' <', '@', 'rfc822']);      # 0
    print Sisimai::String->aligned(\$v, ['example', '@', 'neko']);   # 0

"ipv4(String)"

"ipv4" return all the IPv4 address found in the given string.

    my $v = "connection refused from 192.0.2.1, DNSBL returned 127.0.0.2";
    my $p = Sisimai::String->ipv4($v); # ["192.0.2.1", "127.0.0.2"]

"to_plain(Reference to String, [Loose Check])"

"to_plain" converts given string as HTML to plain text.

    my $v = '<html>neko</html>';
    print Sisimai::String->to_plain($v);    # neko

"to_utf8(Reference to String, [Encoding])"

"to_utf8" converts given string to UTF-8.

    my $v = '^[$BG-^[(B';   # ISO-2022-JP
    print Sisimai::String->to_utf8($v, 'iso-2022-jp');  # 猫