xiaoju
061926b86a
- Auto-fix string concatenation → template literals - Remove unused imports - Prefix unused function with underscore - Format fixes across multiple files
44 lines
1.6 KiB
TypeScript
44 lines
1.6 KiB
TypeScript
import { readFile, writeFile } from "node:fs/promises";
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import type { ToolEntry } from "./types.js";
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export const patchFileTool: ToolEntry = {
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definition: {
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type: "function",
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function: {
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name: "patch_file",
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description: "Find and replace a string in a file (first occurrence only).",
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parameters: {
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type: "object",
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properties: {
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path: { type: "string", description: "Path to the file" },
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old_string: { type: "string", description: "Text to find" },
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new_string: { type: "string", description: "Replacement text" },
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},
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required: ["path", "old_string", "new_string"],
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},
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},
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},
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handler: async (args: string): Promise<string> => {
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try {
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const parsed = JSON.parse(args) as { path: string; old_string: string; new_string: string };
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const content = await readFile(parsed.path, "utf-8");
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const firstIdx = content.indexOf(parsed.old_string);
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if (firstIdx === -1) {
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return `Error: old_string not found in ${parsed.path}`;
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}
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const secondIdx = content.indexOf(parsed.old_string, firstIdx + 1);
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if (secondIdx !== -1) {
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return `Error: old_string is not unique in ${parsed.path} (found multiple occurrences)`;
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}
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const updated =
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content.slice(0, firstIdx) +
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parsed.new_string +
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content.slice(firstIdx + parsed.old_string.length);
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await writeFile(parsed.path, updated);
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return `Successfully patched ${parsed.path}`;
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} catch (err) {
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return `Error: ${err instanceof Error ? err.message : String(err)}`;
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}
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},
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};
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