Move safe-chain package to packages/safe-chain

packages/safe-chain/src/shell-integration/helpers.js

@@ -0,0 +1,68 @@
+import { spawnSync } from "child_process";
+import * as os from "os";
+import fs from "fs";
+
+export const knownAikidoTools = [
+  { tool: "npm", aikidoCommand: "aikido-npm" },
+  { tool: "npx", aikidoCommand: "aikido-npx" },
+  { tool: "yarn", aikidoCommand: "aikido-yarn" },
+  { tool: "pnpm", aikidoCommand: "aikido-pnpm" },
+  { tool: "pnpx", aikidoCommand: "aikido-pnpx" },
+  // When adding a new tool here, also update the expected alias in the tests (setup.spec.js, teardown.spec.js)
+  // and add the documentation for the new tool in the README.md
+];
+
+export function doesExecutableExistOnSystem(executableName) {
+  if (os.platform() === "win32") {
+    const result = spawnSync("where", [executableName], { stdio: "ignore" });
+    return result.status === 0;
+  } else {
+    const result = spawnSync("which", [executableName], { stdio: "ignore" });
+    return result.status === 0;
+  }
+}
+
+export function removeLinesMatchingPattern(filePath, pattern) {
+  if (!fs.existsSync(filePath)) {
+    return;
+  }
+
+  const fileContent = fs.readFileSync(filePath, "utf-8");
+  const lines = fileContent.split(/[\r\n\u2028\u2029]+/);
+  const updatedLines = lines.filter((line) => !shouldRemoveLine(line, pattern));
+  fs.writeFileSync(filePath, updatedLines.join(os.EOL), "utf-8");
+}
+
+const maxLineLength = 100;
+function shouldRemoveLine(line, pattern) {
+  const isPatternMatch = pattern.test(line);
+
+  if (!isPatternMatch) {
+    return false;
+  }
+
+  if (line.length > maxLineLength) {
+    // safe-chain only adds lines shorter than maxLineLength
+    // so if the line is longer, it must be from a different 
+    // source and could be dangerous to remove
+    return false;
+  }
+
+  if (line.includes("\n") || line.includes("\r") || line.includes("\u2028") || line.includes("\u2029")) {
+    // If the line contains newlines, something has gone wrong in splitting
+    // \u2028 and \u2029 are Unicode line separator characters (line and paragraph separators)
+    return false;
+  }
+
+  return true;
+}
+
+export function addLineToFile(filePath, line) {
+  if (!fs.existsSync(filePath)) {
+    fs.writeFileSync(filePath, "", "utf-8");
+  }
+
+  const fileContent = fs.readFileSync(filePath, "utf-8");
+  const updatedContent = fileContent + os.EOL + line;
+  fs.writeFileSync(filePath, updatedContent, "utf-8");
+}