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URLエンコード/デコード

Last updated at Posted at 2018-02-23

表題のとおり urlエンコード/デコードしたい
linux で パイプやリダイレクトで利用したい

nkf を利用する方法がいくつか試みたが
どうも長い文字列などで文字化けするようだ

こんな時は perlが頼り

urlencode.pl
#!/usr/bin/perl

while(<>){
  $str .= $_;
}
$str =~ s/([^ 0-9a-zA-Z])/"%".uc(unpack("H2",$1))/eg;
$str =~ s/ /+/g;
print($str);

urldecode.pl
#!/usr/bin/perl

while(<>){
  $str .= $_;
}
$str =~ s/\+/ /g;
$str =~ s/%([0-9a-fA-F]{2})/pack("H2",$1)/eg;
print($str);

動作チェック

青空文庫「走れメロス」をエンコードしてデコード
比較する

curl -s http://www.aozora.gr.jp/cards/000035/files/1567_14913.html | nkf -w > sample.txt
urlencode.pl sample.txt | urldecode.pl  > sample.out
cmp sample.txt sample.out 

参考にしたページ

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