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/// <reference types="node"/>

import fs = require('fs');

import path = require('path');

interface IOLog {

filesRead: {

path: string;

result: { contents: string; };

}[];

arguments: string[];

}

module Commands {

export function dir(obj: IOLog) {

obj.filesRead.filter(f => f.result !== undefined).forEach(f => {

console.log(f.path);

});

}

dir['description'] = ': displays a list of files';

export function find(obj: IOLog, str: string) {

obj.filesRead.filter(f => f.result !== undefined).forEach(f => {

var lines = f.result.contents.split('\n');

var printedHeader = false;

lines.forEach(line => {

if (line.indexOf(str) >= 0) {

if (!printedHeader) {

console.log(' === ' + f.path + ' ===');

printedHeader = true;

}

console.log(line);

}

});

});

}

find['description'] = ' string: finds text in files';

export function grab(obj: IOLog, filename: string) {

obj.filesRead.filter(f => f.result !== undefined).forEach(f => {

if (path.basename(f.path) === filename) {

fs.writeFile(filename, f.result.contents);

}

});

}

grab['description'] = ' filename.ts: writes out the specified file to disk';

export function extract(obj: IOLog, outputFolder: string) {

var directorySeparator = "/";

function directoryExists(path: string): boolean {

return fs.existsSync(path) && fs.statSync(path).isDirectory();

}

function getDirectoryPath(path: string) {

return path.substr(0, Math.max(getRootLength(path), path.lastIndexOf(directorySeparator)));

}

function getRootLength(path: string): number {

if (path.charAt(0) === directorySeparator) {

if (path.charAt(1) !== directorySeparator) return 1;

var p1 = path.indexOf(directorySeparator, 2);

if (p1 < 0) return 2;

var p2 = path.indexOf(directorySeparator, p1 + 1);

if (p2 < 0) return p1 + 1;

return p2 + 1;

}

if (path.charAt(1) === ":") {

if (path.charAt(2) === directorySeparator) return 3;

}

return 0;

}

function ensureDirectoriesExist(directoryPath: string) {

if (directoryPath.length > getRootLength(directoryPath) && !directoryExists(directoryPath)) {

var parentDirectory = getDirectoryPath(directoryPath);

ensureDirectoriesExist(parentDirectory);

console.log("creating directory: " + directoryPath);

fs.mkdirSync(directoryPath);

}

}

function normalizeSlashes(path: string): string {

return path.replace(/\\/g, "/");

}

function transalatePath(outputFolder:string, path: string): string {

return normalizeSlashes(outputFolder + directorySeparator + path.replace(":", ""));

}

function fileExists(path: string): boolean {

return fs.existsSync(path);

}

obj.filesRead.forEach(f => {

var filename = transalatePath(outputFolder, f.path);

ensureDirectoriesExist(getDirectoryPath(filename));

console.log("writing filename: " + filename);

fs.writeFileSync(filename, f.result.contents);

});

console.log("Command: tsc ");

obj.arguments.forEach(a => {

if (getRootLength(a) > 0) {

console.log(transalatePath(outputFolder, a));

}

else {

console.log(a);

}

console.log(" ");

});

}

extract['description'] = ' outputFolder: extract all input files to <outputFolder>';

}

var args = process.argv.slice(2);

if (args.length < 2) {

console.log('Usage: node ior.js path_to_file.json [command]');

console.log('List of commands: ');

Object.keys(Commands).forEach(k => console.log(' ' + k + Commands[k]['description']));

} else {

var cmd: Function = Commands[args[1]];

if (cmd === undefined) {

console.log('Unknown command ' + args[1]);

} else {

fs.readFile(args[0], 'utf-8', (err, data) => {

if (err) throw err;

var json = JSON.parse(data);

cmd.apply(undefined, [json].concat(args.slice(2)));

});

}

}