115 lines
3.0 KiB
TypeScript
115 lines
3.0 KiB
TypeScript
import {
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addParentPointers,
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collectNodesMatching,
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ParseTree,
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renderToText,
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} from "../../common/tree.ts";
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export const queryRegex =
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/(<!--\s*#query\s+(.+?)-->)(.+?)(<!--\s*\/query\s*-->)/gs;
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export const directiveStartRegex = /<!--\s*#([\w\-]+)\s+(.+?)-->/s;
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export const directiveEndRegex = /<!--\s*\/([\w\-]+)\s*-->/s;
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export function removeQueries(pt: ParseTree) {
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addParentPointers(pt);
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collectNodesMatching(pt, (t) => {
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if (t.type !== "CommentBlock") {
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return false;
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}
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let text = t.children![0].text!;
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let match = directiveStartRegex.exec(text);
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if (!match) {
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return false;
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}
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let directiveType = match[1];
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let parentChildren = t.parent!.children!;
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let index = parentChildren.indexOf(t);
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let nodesToReplace: ParseTree[] = [];
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for (let i = index + 1; i < parentChildren.length; i++) {
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let n = parentChildren[i];
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if (n.type === "CommentBlock") {
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let text = n.children![0].text!;
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let match = directiveEndRegex.exec(text);
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if (match && match[1] === directiveType) {
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break;
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}
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}
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nodesToReplace.push(n);
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}
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let renderedText = nodesToReplace.map(renderToText).join("");
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parentChildren.splice(index + 1, nodesToReplace.length, {
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text: new Array(renderedText.length + 1).join(" "),
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});
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return true;
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});
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}
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const maxWidth = 70;
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// Nicely format an array of JSON objects as a Markdown table
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export function jsonToMDTable(
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jsonArray: any[],
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valueTransformer: (k: string, v: any) => string = (k, v) => "" + v
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): string {
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let fieldWidths = new Map<string, number>();
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for (let entry of jsonArray) {
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for (let k of Object.keys(entry)) {
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let fieldWidth = fieldWidths.get(k);
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if (!fieldWidth) {
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fieldWidth = valueTransformer(k, entry[k]).length;
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} else {
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fieldWidth = Math.max(valueTransformer(k, entry[k]).length, fieldWidth);
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}
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fieldWidths.set(k, fieldWidth);
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}
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}
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let fullWidth = 0;
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for (let v of fieldWidths.values()) {
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fullWidth += v + 1;
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}
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let headerList = [...fieldWidths.keys()];
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let lines = [];
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lines.push(
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"|" +
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headerList
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.map(
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(headerName) =>
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headerName +
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charPad(" ", fieldWidths.get(headerName)! - headerName.length)
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)
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.join("|") +
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"|"
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);
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lines.push(
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"|" +
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headerList
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.map((title) => charPad("-", fieldWidths.get(title)!))
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.join("|") +
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"|"
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);
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for (const val of jsonArray) {
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let el = [];
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for (let prop of headerList) {
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let s = valueTransformer(prop, val[prop]);
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el.push(s + charPad(" ", fieldWidths.get(prop)! - s.length));
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}
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lines.push("|" + el.join("|") + "|");
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}
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return lines.join("\n");
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function charPad(ch: string, length: number) {
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if (fullWidth > maxWidth && ch === "") {
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return "";
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} else if (fullWidth > maxWidth && ch === "-") {
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return "--";
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}
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if (length < 1) {
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return "";
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}
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return new Array(length + 1).join(ch);
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}
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}
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