json path ish support (#47)

package.json

@@ -17,6 +17,7 @@
     "@astrojs/tailwind": "^5.1.0",
     "@hpcc-js/wasm": "^2.22.1",
     "astro": "^4.10.2",
+    "jsonpath": "^1.1.1",
     "marked": "^14.1.2",
     "rehype-graphviz": "^0.3.0",
     "sharp": "^0.32.5",

src/components/Sample.astro

@@ -1,99 +1,13 @@
 ---
 import { Code } from "@astrojs/starlight/components";
-import { redirectToDefaultLocale } from "astro:i18n";
 import fs from "node:fs/promises";
+import sampleCode from './utils/sample';
 
 const { path, type, token1 = "", token2 = "" } = Astro.props;
 
 let code = await fs.readFile(path, "utf-8");
-let partialCode = code;
 
-let symbols = [];
-if (token1 != "") {
-  symbols.push(token1);
-}
-if (token2 != "") {
-  symbols.push(token2);
-}
-
-if (symbols.length != 0) {
-  let snippets = [];
-  for (let symbol of symbols) {
-    const match = code.match(new RegExp(`^([\\s]*)(${symbol})`, "m"));
-    if (!match) {
-      throw new Error(`Symbol not found: ${symbol}`);
-    }
-
-    // Determine the end of the symbol.
-    let start = match.index;
-    let ix, block_token;
-    try {
-      [ix, block_token] = [
-        ...[":", "{", ";"].map((token) => [
-          code.indexOf(token, match.index),
-          token,
-        ]),
-      ]
-        .filter(([loc]) => loc !== -1)
-        .sort((a, b) => a[0] - b[0])[0];
-    } catch (e) {
-      throw new Error(
-        `No block character (:, {) found after ${symbol} at line ${code.slice(0, start).split("\n").length - 1}`
-      );
-    }
-
-    // Push the start marker backwards to include any leading comments.
-    let lines = code.slice(0, start).split("\n");
-    for (let line of lines.reverse()) {
-      if (/^[\s]*(\/\/|#)/.test(line)) {
-        start -= line.length + 1;
-      } else {
-        break;
-      }
-    }
-
-    // Handle block types based on the token found.
-    let snippet = "";
-    if (block_token === ":") {
-      const indent = match[1].length;
-      const endMatch = code
-        .slice(ix)
-        .match(new RegExp(`^[\\s]{0,${indent}}[^\\s]`, "m"));
-      snippet = endMatch
-        ? code.slice(start, ix + endMatch.index)
-        : code.slice(start);
-    } else if (block_token === "{") {
-      let cursor = match.index;
-      while (true) {
-        const close_brace = code.indexOf("}", cursor);
-        if (close_brace === -1) {
-          throw new Error(
-            `No corresponding } found for ${symbol} at line ${code.slice(0, start).split("\n").length - 1}`
-          );
-        }
-        const s = match.index,
-          e = close_brace + 1;
-        if (
-          code.slice(s, e).split("{").length ===
-          code.slice(s, e).split("}").length
-        ) {
-          snippet = code.slice(start, e);
-          break;
-        }
-        cursor = e;
-      }
-    } else {
-      const end = code.indexOf(";", match.index) + 1;
-      snippet = code.slice(start, end);
-    }
-
-    // Append the snippet to the list of snippets.
-    snippets.push(snippet.trim());
-  }
-
-  // We have a snippet. Time to put the Markdown together.
-  partialCode = snippets.join("\n\n");
-}
+let partialCode = sampleCode(code, type, token1, token2);
 ---
 
 <Code code={partialCode} lang={type} />