oh-my-zsh/plugins/urltools/urltools.plugin.zsh

# URL Tools
# Adds handy command line aliases useful for dealing with URLs
#
# Taken from:
# http://ruslanspivak.com/2010/06/02/urlencode-and-urldecode-from-a-command-line/

if [[ $(whence $URLTOOLS_METHOD) = "" ]]; then
    URLTOOLS_METHOD=""
fi

if [[ $(whence node) != "" && ( "x$URLTOOLS_METHOD" = "x"  || "x$URLTOOLS_METHOD" = "xnode" ) ]]; then
    alias urlencode='node -e "console.log(encodeURIComponent(process.argv[1]))"'
    alias urldecode='node -e "console.log(decodeURIComponent(process.argv[1]))"'
elif [[ $(whence python3) != "" && ( "x$URLTOOLS_METHOD" = "x" || "x$URLTOOLS_METHOD" = "xpython" ) ]]; then
    alias urlencode='python3 -c "import sys, urllib.parse as up; print(up.quote_plus(sys.argv[1]))"'
    alias urldecode='python3 -c "import sys, urllib.parse as up; print(up.unquote_plus(sys.argv[1]))"'
elif [[ $(whence python2) != "" && ( "x$URLTOOLS_METHOD" = "x" || "x$URLTOOLS_METHOD" = "xpython" ) ]]; then
    alias urlencode='python2 -c "import sys, urllib as ul; print ul.quote_plus(sys.argv[1])"'
    alias urldecode='python2 -c "import sys, urllib as ul; print ul.unquote_plus(sys.argv[1])"'
elif [[ $(whence xxd) != "" && ( "x$URLTOOLS_METHOD" = "x" || "x$URLTOOLS_METHOD" = "xshell" ) ]]; then
    function urlencode() {echo $@ | tr -d "\n" | xxd -plain | sed "s/\(..\)/%\1/g"}
    function urldecode() {printf $(echo -n $@ | sed 's/\\/\\\\/g;s/\(%\)\([0-9a-fA-F][0-9a-fA-F]\)/\\x\2/g')"\n"}
elif [[ $(whence ruby) != "" && ( "x$URLTOOLS_METHOD" = "x" || "x$URLTOOLS_METHOD" = "xruby" ) ]]; then
    alias urlencode='ruby -r cgi -e "puts CGI.escape(ARGV[0])"'
    alias urldecode='ruby -r cgi -e "puts CGI.unescape(ARGV[0])"'
elif [[ $(whence php) != "" && ( "x$URLTOOLS_METHOD" = "x" || "x$URLTOOLS_METHOD" = "xphp" ) ]]; then
    alias urlencode='php -r "echo rawurlencode(\$argv[1]); echo \"\n\";"'
    alias urldecode='php -r "echo rawurldecode(\$argv[1]); echo \"\\n\";"'
elif [[ $(whence perl) != "" && ( "x$URLTOOLS_METHOD" = "x" || "x$URLTOOLS_METHOD" = "xperl" ) ]]; then
    if perl -MURI::Encode -e 1&> /dev/null; then
        alias urlencode='perl -MURI::Encode -ep "uri_encode($ARGV[0]);"'
        alias urldecode='perl -MURI::Encode -ep "uri_decode($ARGV[0]);"'
    elif perl -MURI::Escape -e 1 &> /dev/null; then
        alias urlencode='perl -MURI::Escape -ep "uri_escape($ARGV[0]);"'
        alias urldecode='perl -MURI::Escape -ep "uri_unescape($ARGV[0]);"'
    else
        alias urlencode="perl -e '\$new=\$ARGV[0]; \$new =~ s/([^A-Za-z0-9])/sprintf(\"%%%02X\", ord(\$1))/seg; print \"\$new\n\";'"
        alias urldecode="perl -e '\$new=\$ARGV[0]; \$new =~ s/\%([A-Fa-f0-9]{2})/pack(\"C\", hex(\$1))/seg; print \"\$new\n\";'"
    fi
fi

unset URLTOOLS_METHOD