48 lines
1.3 KiB
TypeScript
48 lines
1.3 KiB
TypeScript
import type { HTMLNode, CommentOrTextAST, ElementAST, AST } from './types';
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export const splitHead = (str: string, sep: string) => {
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const idx = str.indexOf(sep);
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if (idx === -1) return [str];
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return [str.slice(0, idx), str.slice(idx + sep.length)];
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};
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const unquote = (str: string) => {
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const car = str.charAt(0);
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const end = str.length - 1;
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const isQuoteStart = car === '"' || car === "'";
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if (isQuoteStart && car === str.charAt(end)) {
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return str.slice(1, end);
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}
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return str;
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};
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const formatAttributes = (attributes: string[]) => {
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return attributes.map((attribute) => {
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const parts = splitHead(attribute.trim(), '=');
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const key = parts[0];
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const value = typeof parts[1] === 'string' ? unquote(parts[1]) : null;
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return { key, value };
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});
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};
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export const format = (nodes: HTMLNode[]): AST[] => {
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return nodes.map((node) => {
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if (node.type === 'element') {
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const children = format(node.children);
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const item: ElementAST = {
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type: 'element',
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tagName: node.tagName.toLowerCase(),
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attributes: formatAttributes(node.attributes),
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children,
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};
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return item;
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}
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const item: CommentOrTextAST = {
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type: node.type,
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content: node.content,
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};
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return item;
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});
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};
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