Spaces:
Sleeping
Sleeping
File size: 2,984 Bytes
31248b9 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 | // Copyright (c) Microsoft Corporation. All rights reserved. Licensed under the MIT license.
// See LICENSE in the project root for license information.
import { DocNode, DocNodeKind } from '../nodes';
/**
* Renders a DocNode tree as plain text, without any rich text formatting or markup.
*/
export class PlainTextEmitter {
static hasAnyTextContent(nodeOrNodes, requiredCharacters) {
if (requiredCharacters === undefined || requiredCharacters < 1) {
requiredCharacters = 1; // default
}
let nodes;
if (nodeOrNodes instanceof DocNode) {
nodes = [nodeOrNodes];
}
else {
nodes = nodeOrNodes;
}
const foundCharacters = PlainTextEmitter._scanTextContent(nodes, requiredCharacters, 0);
return foundCharacters >= requiredCharacters;
}
static _scanTextContent(nodes, requiredCharacters, foundCharacters) {
for (const node of nodes) {
switch (node.kind) {
case DocNodeKind.FencedCode:
const docFencedCode = node;
foundCharacters += PlainTextEmitter._countNonSpaceCharacters(docFencedCode.code);
break;
case DocNodeKind.CodeSpan:
const docCodeSpan = node;
foundCharacters += PlainTextEmitter._countNonSpaceCharacters(docCodeSpan.code);
break;
case DocNodeKind.EscapedText:
const docEscapedText = node;
foundCharacters += PlainTextEmitter._countNonSpaceCharacters(docEscapedText.decodedText);
break;
case DocNodeKind.LinkTag:
const docLinkTag = node;
foundCharacters += PlainTextEmitter._countNonSpaceCharacters(docLinkTag.linkText || '');
break;
case DocNodeKind.PlainText:
const docPlainText = node;
foundCharacters += PlainTextEmitter._countNonSpaceCharacters(docPlainText.text);
break;
}
if (foundCharacters >= requiredCharacters) {
break;
}
foundCharacters += PlainTextEmitter._scanTextContent(node.getChildNodes(), requiredCharacters, foundCharacters);
if (foundCharacters >= requiredCharacters) {
break;
}
}
return foundCharacters;
}
static _countNonSpaceCharacters(s) {
let count = 0;
const length = s.length;
let i = 0;
while (i < length) {
switch (s.charCodeAt(i)) {
case 32: // space
case 9: // tab
case 13: // CR
case 10: // LF
break;
default:
++count;
}
++i;
}
return count;
}
}
//# sourceMappingURL=PlainTextEmitter.js.map |