base256u

A program that converts between bytes and UTF-8 codepoints. Printable ASCII is preserved, and all other characters (including newlines) are mapped to a low unicode codepoint.

$ cargo install base256u-cli
...

$ python -c 'import sys; sys.stdout.buffer.write(bytes(range(256)))' | base256u
°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏ !"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJK
LMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~§ĀāĂ㥹ĆćĈĉĊċČčĎďĐđĒēĔĕĖė
ĘęĚěĜĝĞğĠġĢģĤĥĦħĨĩĪīĬĭĮįİıIJijĴĵĶķĸĹĺĻļĽľĿŀŁłŃńŅņŇň¤ŊŋŌōŎŏŐőŒœŔŕŖŗŘřŚśŜŝŞşŠšŢţ
ŤťŦŧŨũŪūŬŭŮůŰűŲųŴŵŶŷŸŹźŻżŽžſ

$ python -c 'import sys; sys.stdout.buffer.write(bytes(range(256)))' | base256u -ew 32
🌰🌱🌲🌳🌴🌵🌶🌷🌸🌹🌺🌻🌼🌽🌾🌿🍀🍁🍂🍃🍄🍅🍆🍇🍈🍉🍊🍋🍌🍍🍎🍏
🍐🍑🍒🍓🍔🍕🍖🍗🍘🍙🍚🍛🍜🍝🍞🍟🍠🍡🍢🍣🍤🍥🍦🍧🍨🍩🍪🍫🍬🍭🍮🍯
🍰🍱🍲🍳🍴🍵🍶🍷🍸🍹🍺🍻🍼🍽🍾🍿🐀🐁🐂🐃🐄🐅🐆🐇🐈🐉🐊🐋🐌🐍🐎🐏
🐐🐑🐒🐓🐔🐕🐖🐗🐘🐙🐚🐛🐜🐝🐞🐟🐠🐡🐢🐣🐤🐥🐦🐧🐨🐩🐪🐫🐬🐭🐮🐯
🐰🐱🐲🐳🐴🐵🐶🐷🐸🐹🐺🐻🐼🐽🐾🐿😀😁😂😃😄😅😆😇😈😉😊😋😌😍😎😏
😐😑😒😓😔😕😖😗😘😙😚😛😜😝😞😟😠😡😢😣😤😥😦😧😨😩😪😫😬😭😮😯
😰😱😲😳😴😵😶😷😸😹😺😻😼😽😾😿🙀🙁🙂🙃🙄🙅🙆🙇🙈🙉🙊🙋🙌🙍🙎🙏
🤐🤑🤒🤓🤔🤕🤖🤗🤘🤙🤚🤛🤜🤝🤞🤟🤠🤡🤢🤣🤤🤥🤦🤧🤨🤩🤪🤫🤬🤭🤮🤯

$ echo Pack my box with five dozen liquor jugs. | base256u
Pack my box with five dozen liquor jugs.º

$ echo Pack my box with five dozen liquor jugs. | base256u | base256u -d
Pack my box with five dozen liquor jugs.

$ echo Pack my box with five dozen liquor jugs. | base256u -e
🐀🐑🐓🐛🍐🐝🐩🍐🐒🐟🐨🍐🐧🐙🐤🐘🍐🐖🐙🐦🐕🍐🐔🐟🐪🐕🐞🍐🐜🐙🐡🐥🐟🐢🍐🐚🐥🐗🐣🍞🌺

$ echo Pack my box with five dozen liquor jugs. | base256u -e | base256u -de
Pack my box with five dozen liquor jugs.

$ dd if=/dev/urandom bs=36 count=1 2>/dev/null | base256u
B^$Éıŷ/āűũļşÎ%Ăż'żşAtiŮqHtÀŔwĸÂWŲŋŪķ

$ dd if=/dev/urandom bs=36 count=1 2>/dev/null | base256u -e
😵😟🌻🤖🍮🤢😗🐣😡🍦🐖🐾🍺🐊🌻🍽🐹🍳😣🐈🙌🐿🙎🍪🤙🤝🍫🐰🐮🙈😆🍗🍍🤨🐺🍗