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'use strict';
var Scalar = require('../../nodes/Scalar.js');
var stringifyString = require('../../stringify/stringifyString.js');
const binary = {
identify: value => value instanceof Uint8Array,
default: false,
tag: 'tag:yaml.org,2002:binary',
/**
* Returns a Buffer in node and an Uint8Array in browsers
*
* To use the resulting buffer as an image, you'll want to do something like:
*
* const blob = new Blob([buffer], { type: 'image/jpeg' })
* document.querySelector('#photo').src = URL.createObjectURL(blob)
*/
resolve(src, onError) {
if (typeof Buffer === 'function') {
return Buffer.from(src, 'base64');
}
else if (typeof atob === 'function') {
// On IE 11, atob() can't handle newlines
const str = atob(src.replace(/[\n\r]/g, ''));
const buffer = new Uint8Array(str.length);
for (let i = 0; i < str.length; ++i)
buffer[i] = str.charCodeAt(i);
return buffer;
}
else {
onError('This environment does not support reading binary tags; either Buffer or atob is required');
return src;
}
},
stringify({ comment, type, value }, ctx, onComment, onChompKeep) {
const buf = value; // checked earlier by binary.identify()
let str;
if (typeof Buffer === 'function') {
str =
buf instanceof Buffer
? buf.toString('base64')
: Buffer.from(buf.buffer).toString('base64');
}
else if (typeof btoa === 'function') {
let s = '';
for (let i = 0; i < buf.length; ++i)
s += String.fromCharCode(buf[i]);
str = btoa(s);
}
else {
throw new Error('This environment does not support writing binary tags; either Buffer or btoa is required');
}
if (!type)
type = Scalar.Scalar.BLOCK_LITERAL;
if (type !== Scalar.Scalar.QUOTE_DOUBLE) {
const lineWidth = Math.max(ctx.options.lineWidth - ctx.indent.length, ctx.options.minContentWidth);
const n = Math.ceil(str.length / lineWidth);
const lines = new Array(n);
for (let i = 0, o = 0; i < n; ++i, o += lineWidth) {
lines[i] = str.substr(o, lineWidth);
}
str = lines.join(type === Scalar.Scalar.BLOCK_LITERAL ? '\n' : ' ');
}
return stringifyString.stringifyString({ comment, type, value: str }, ctx, onComment, onChompKeep);
}
};
exports.binary = binary;
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