91 lines
3.3 KiB
TypeScript
91 lines
3.3 KiB
TypeScript
|
/* adler32.js (C) 2014-present SheetJS -- http://sheetjs.com */
|
||
|
|
/* eslint-env node */
|
||
|
|
/* vim: set ts=2 ft=javascript: */
|
||
|
|
/*jshint node:true */
|
||
|
|
/// <reference types="../node_modules/@types/node/" />
|
||
|
|
/* node type definition is missing writable stream _writev */
|
||
|
|
interface Chunk { chunk: any; encoding: string; }
|
||
|
|
type CBType = () => void;
|
||
|
|
|
||
|
|
import X = require("adler-32");
|
||
|
|
import 'exit-on-epipe';
|
||
|
|
import fs = require('fs');
|
||
|
|
import stream = require('stream');
|
||
|
|
import { sprintf } from "printj";
|
||
|
|
|
||
|
|
const help = (): number => {
|
||
|
|
[
|
||
|
|
"usage: adler32 [options] [filename]",
|
||
|
|
"",
|
||
|
|
"Options:",
|
||
|
|
" -h, --help output usage information",
|
||
|
|
" -V, --version output the version number",
|
||
|
|
" -S, --seed=<n> use integer seed as starting value (default 1)",
|
||
|
|
" -H, --hex-seed=<h> use hex seed as starting value (default 1)",
|
||
|
|
" -d, --signed print result with format `%d` (default)",
|
||
|
|
" -u, --unsigned print result with format `%u`",
|
||
|
|
" -x, --hex print result with format `%0.8x`",
|
||
|
|
" -X, --HEX print result with format `%0.8X`",
|
||
|
|
" -F, --format=<s> use specified printf format",
|
||
|
|
"",
|
||
|
|
"Set filename = '-' or pipe data into adler32 to read from stdin",
|
||
|
|
"Default output mode is signed (-d)",
|
||
|
|
""
|
||
|
|
].forEach(function(l) { console.log(l); });
|
||
|
|
return 0;
|
||
|
|
};
|
||
|
|
|
||
|
|
const version = (): number => { console.log(X.version); return 0; };
|
||
|
|
|
||
|
|
|
||
|
|
const die = (msg: string, ec?: number): void => { console.error(msg); process.exit(ec || 0); };
|
||
|
|
|
||
|
|
const args/*:Array<string>*/ = process.argv.slice(2);
|
||
|
|
let filename/*:string*/ = "";
|
||
|
|
let fmt/*:string*/ = "";
|
||
|
|
let seed = 0, r = 10;
|
||
|
|
|
||
|
|
for(let i = 0; i < args.length; ++i) {
|
||
|
|
const arg = args[i];
|
||
|
|
if(arg.charCodeAt(0) !== 45) { if(filename === "") filename = arg; continue; }
|
||
|
|
const m = arg.indexOf("=") === -1 ? arg : arg.substr(0, arg.indexOf("="));
|
||
|
|
switch(m) {
|
||
|
|
case "-": filename = "-"; break;
|
||
|
|
|
||
|
|
case "--help": case "-h": process.exit(help()); break;
|
||
|
|
case "--version": case "-V": process.exit(version()); break;
|
||
|
|
|
||
|
|
case "--signed": case "-d": fmt = "%d"; break;
|
||
|
|
case "--unsigned": case "-u": fmt = "%u"; break;
|
||
|
|
case "--hex": case "-x": fmt = "%0.8x"; break;
|
||
|
|
case "--HEX": case "-X": fmt = "%0.8X"; break;
|
||
|
|
case "--format": case "-F":
|
||
|
|
fmt = ((m!==arg) ? arg.substr(m.length+1) : args[++i])||""; break;
|
||
|
|
|
||
|
|
case "--hex-seed": case "-H": r = 16;
|
||
|
|
/* falls through */
|
||
|
|
case "--seed": case "-S":
|
||
|
|
seed=parseInt((m!==arg) ? arg.substr(m.length+1) : args[++i], r)||0; break;
|
||
|
|
|
||
|
|
default: die("adler32: unrecognized option `" + arg + "'", 22);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if(!process.stdin.isTTY) filename = filename || "-";
|
||
|
|
if(filename.length===0) die("adler32: must specify a filename ('-' for stdin)",1);
|
||
|
|
|
||
|
|
let adler32 = seed;
|
||
|
|
// $FlowIgnore -- Writable is callable but type sig disagrees
|
||
|
|
const writable = new stream.Writable();
|
||
|
|
writable._write = (chunk: any, e: string, cb: CBType) => { adler32 = X.buf(chunk, adler32); cb(); };
|
||
|
|
(<any>writable)._writev = (chunks: Chunk[], cb: CBType) => {
|
||
|
|
chunks.forEach(function(c) { adler32 = X.buf(c.chunk, adler32);}); cb();
|
||
|
|
};
|
||
|
|
writable.on('finish', () => {
|
||
|
|
console.log(fmt === "" ? adler32 : sprintf(fmt, adler32));
|
||
|
|
});
|
||
|
|
|
||
|
|
if(filename === "-") process.stdin.pipe(writable);
|
||
|
|
else if(fs.existsSync(filename)) fs.createReadStream(filename).pipe(writable);
|
||
|
|
else die("adler32: " + filename + ": No such file or directory", 2);
|