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#!/usr/bin/node
let fs = require('fs'),
path = require('path'),
args = process.argv.slice(2),
input = "-", // - will reperesent stdin
output = "-", // - will represent stdout
delimiter = ",";
let Reset = "\x1b[0m",
Bright = "\x1b[1m",
Dim = "\x1b[2m",
Underscore = "\x1b[4m",
Blink = "\x1b[5m",
Reverse = "\x1b[7m",
Hidden = "\x1b[8m",
FgBlack = "\x1b[30m",
FgRed = "\x1b[31m",
FgGreen = "\x1b[32m",
FgYellow = "\x1b[33m",
FgBlue = "\x1b[34m",
FgMagenta = "\x1b[35m",
FgCyan = "\x1b[36m",
FgWhite = "\x1b[37m",
BgBlack = "\x1b[40m",
BgRed = "\x1b[41m",
BgGreen = "\x1b[42m",
BgYellow = "\x1b[43m",
BgBlue = "\x1b[44m",
BgMagenta = "\x1b[45m",
BgCyan = "\x1b[46m",
BgWhite = "\x1b[47m";
if( args[0] == "-h" || args[0] == "--help" ){
console.log(FgGreen + "Aquarius Redirects (beta)" + Reset);
console.log();
console.log("This takes a csv file from stdinput or a given filename as the first parameter");
console.log();
console.log(FgGreen + "Example:" + Reset);
console.log("aquarius-redirects test.csv \t\t\t This will take each line of a csv file and turn it into a redirect");
console.log("cat test.csv | aquarius-redirects\t\t This is equivilent to the above");
console.log("echo \"/test/, /test-2/\" | aquarius-redirects\t This will create a redirect from /test/ to /test-2/");
console.log();
console.log();
console.log();
console.log(FgGreen + "The CSV File" + Reset);
console.log();
console.log("Each row in the CSV file should respond to a redirect.");
console.log("\t 1. From URL");
console.log("\t 2. To URL");
console.log("\t 3. Redirect Type");
console.log("\t 4. Exact ");
console.log();
console.log(FgGreen + "E.g." + Reset);
console.log("/page-1/ | /page-2/ | | ");
console.log("/about-us/meet-the-team/ | /meet-the-team/ | | ");
console.log("/about-us/meet-the-team/*/ | /meet-the-team/*/ | | true ");
console.log("//google.com/page-1/ | /page-2/ | | ");
console.log("//google.com/page-1/ | //google.co.uk/page-2/ | 302 | true ");
console.log("//google.com/*/ | //google.co.uk/*/ | | ");
console.log();
console.log(FgGreen + "From URL" + Reset);
console.log("This is the URL that should be redirected away from");
console.log("It can optionally contain a * symbol do denote a wildcard expresion");
console.log("For exmaple, /about-us/*/ will redirect from any child page of /about-us/");
console.log("");
console.log(FgGreen + "To URL" + Reset);
console.log("This is the URL that should be redirected to");
console.log("It can optionally contain an * symbol if you contained one in the From URL");
console.log("For exmaple, /about-us/*/ in From and /about/*/ in To will redirect all child pages of about us to the corresponding page under about");
console.log("");
console.log(FgGreen + "Redirect Type" + Reset);
console.log("This is the redirect type");
console.log("This is optional and contains the responce code that will be sent with the redirection request.");
console.log("The default is 301 which is a permenant redirect. You might want to make this 302 which implies a temporary redirect");
console.log("");
console.log(FgGreen + "Exact" + Reset);
console.log("This denotes whether the trailing slash should be optional on the from URL");
console.log("This defualts to false");
console.log("If true, the From url /about-us != /about-us/ ");
process.exit(0);
}
if(args[0] != undefined && args[0] != ""){
input = args[0];
}
if(input == "-" ) { // We are reading from stdin
process.stdin.setEncoding('utf-8');
let contents = "";
process.stdin.on("readable", () => {
let back = process.stdin.read();
if (back != null){
contents = contents + back;
}
});
process.stdin.on("end", () => {
doRedirects(contents);
});
//console.error("I haven't implemented stdin yet");
//process.exit(1);
} else {
fs.readFile(input, {encoding: 'utf-8'}, function(err,data){
if (!err) {
doRedirects(data)
} else {
console.log(err);
process.exit(1);
}
});
}
function doRedirects(data){
let lines = data.split("\n");
for (let i = 0; i < lines.length; i++){
lines[i] = lines[i].split(",");
for (let j = 0; j < lines[i].length; j++){
lines[i][j] = lines[i][j].replace(/^\s*/g,"");
lines[i][j] = lines[i][j].replace(/\s*$/g,"");
}
if (lines[i].length > 1){
let from = lines[i][0],
to = lines[i][1],
type = lines[i][2] || 301,
exact = lines[i][3] || false;
let redirect = individualRedirect(from,to,type,exact);
process.stdout.write("###Redirect from "+from+" to "+to+"###\n");
process.stdout.write(redirect+"\n");
process.stdout.write("\n");
}
}
}
function individualRedirect(from, to, type, exact){
var ret = "";
if(!from){
throw new Error( "You must have a from url" );
}
if(!to){
throw new Error( "You must have a to url" );
}
if(!type){
type = 301;
}
if(!exact){
exact = false;
}
if(typeof exact == "string" && exact.toLowerCase() != "true"){
exact = false;
}
from = splitURL_(from);
if(from.domain != ""){
ret += "RewriteCond %{HTTP_HOST} ^" + escape_(from.domain) + "$\n";
}
for (var i in from.queries){
ret += "RewriteCond %{QUERY_STRING} (^|&)" + i + ((from.queries[i] !== undefined)?("\=" + from.queries[i]):"") + "($|&)\n";
}
ret += "RewriteRule " + doFrom_(from.path,exact) + " " + doTo_(to) + " " + doRewrite_(type);
return ret;
}
function doFrom_(from,exact){
if(from[0]=="/"){
from = "^" + from.substring(1,from.length);
}
if(!exact){
if(from[from.length-1]=="/"){
from = from+"?";
} else {
from = from + "\/?";
}
}
from = escape_(from);
return from + "$";
}
function escape_(url){
return url.replace(/\//g,"\\\/")
.replace(/\-/g,"\\\-")
.replace(/\./g,"\\\.")
.replace(/\*/g,"(.*?)");
}
function doTo_(to){
if(to[0]!="/" && to.indexOf("//")==-1){
to = "/"+to;
}
to = to.replace(/\*/g,"$1");
if(to.indexOf(" ") != -1){
to = '"' + to + '"';
}
return to;
}
function doRewrite_(type){
return "[L,R="+type+"]";
}
function splitURL_(url){
ret = {
protocol:"",
domain:"",
path:"",
queries:{}
};
var p=url.indexOf("//");
if(p!=-1){
//Gets the protocol
ret.protocol = url.substring(0,p-1);
//Removes up to and including the protocol
url = url.substring(p+2)
var d = url.indexOf("/");
if(d!=-1){
//gets the domain
ret.domain = url.substring(0,d);
url=url.substring(d);
} else {
ret.domain = url;
url = "";
}
}
var q=url.indexOf("?");
if(q!=-1){
queries = url.substring(q+1).split("&");
for (var i = 0; i<queries.length; i++){
ret.queries[queries[i].split("=")[0]] = queries[i].split("=")[1];
}
url = url.substring(0,q);
}
ret.path=url;
return ret;
}