xsheetjs/bits/05_buf.js
SheetJS c0b4895881 version bump 0.12.12: ecosystem deprecations
- node 10 `Buffer` deprecation workaround (with dependency update)
- Angular 6 global deprecation workaround (fixes #1088 h/t @cristhiank)
- BIFF8 write standard and custom properties
- TH elements in HTML string (fixes #1090 h/t @GigiSan)
- planmaker export quirks
2018-05-05 02:34:37 -04:00

50 lines
1.8 KiB
JavaScript

var has_buf = (typeof Buffer !== 'undefined' && typeof process !== 'undefined' && typeof process.versions !== 'undefined' && process.versions.node);
if(typeof Buffer !== 'undefined') {
// $FlowIgnore
if(!Buffer.from) Buffer.from = function(buf, enc) { return (enc) ? new Buffer(buf, enc) : new Buffer(buf); };
// $FlowIgnore
if(!Buffer.alloc) Buffer.alloc = function(n) { return new Buffer(n); };
}
function new_raw_buf(len/*:number*/) {
/* jshint -W056 */
return has_buf ? Buffer.alloc(len) : new Array(len);
/* jshint +W056 */
}
var s2a = function s2a(s/*:string*/)/*:any*/ {
if(has_buf) return Buffer.from(s, "binary");
return s.split("").map(function(x/*:string*/)/*:number*/{ return x.charCodeAt(0) & 0xff; });
};
function s2ab(s/*:string*/)/*:any*/ {
if(typeof ArrayBuffer === 'undefined') return s2a(s);
var buf = new ArrayBuffer(s.length), view = new Uint8Array(buf);
for (var i=0; i!=s.length; ++i) view[i] = s.charCodeAt(i) & 0xFF;
return buf;
}
function a2s(data/*:any*/)/*:string*/ {
if(Array.isArray(data)) return data.map(_chr).join("");
var o/*:Array<string>*/ = []; for(var i = 0; i < data.length; ++i) o[i] = _chr(data[i]); return o.join("");
}
function a2u(data/*:Array<number>*/)/*:Uint8Array*/ {
if(typeof Uint8Array === 'undefined') throw new Error("Unsupported");
return new Uint8Array(data);
}
function ab2a(data/*:ArrayBuffer|Uint8Array*/)/*:Array<number>*/ {
if(typeof ArrayBuffer == 'undefined') throw new Error("Unsupported");
if(data instanceof ArrayBuffer) return ab2a(new Uint8Array(data));
/*:: if(data instanceof ArrayBuffer) throw new Error("unreachable"); */
var o = new Array(data.length);
for(var i = 0; i < data.length; ++i) o[i] = data[i];
return o;
}
var bconcat = function(bufs) { return [].concat.apply([], bufs); };
var chr0 = /\u0000/g, chr1 = /[\u0001-\u0006]/g;