All the pipes (#47)
* Bump the character limit to web fetch. * Piped Input Hook. First step in bringing in STDIN piping. * Fix linting errors. * Remove incorrect comment.
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@ -138,7 +138,7 @@ export class WebFetchTool extends BaseTool<WebFetchToolParams, ToolResult> {
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const data = await response.text();
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let llmContent = '';
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// Truncate very large responses for the LLM context
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const MAX_LLM_CONTENT_LENGTH = 100000;
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const MAX_LLM_CONTENT_LENGTH = 200000;
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if (data) {
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llmContent = `Fetched data from ${url}:\n\n${
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data.length > MAX_LLM_CONTENT_LENGTH
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@ -0,0 +1,78 @@
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import { useState, useEffect } from 'react';
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import { useStdin } from 'ink';
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export interface PipedInputState {
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data: string | null; // Use null initially to distinguish from empty string
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isLoading: boolean;
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error: string | null;
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isPiped: boolean; // Flag to indicate if input was piped
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}
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export function usePipedInput(): PipedInputState {
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const { stdin, setRawMode, isRawModeSupported } = useStdin();
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// Keep exit available if needed, e.g., for error handling, but maybe let consumer handle it
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// const { exit } = useApp();
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const [pipedData, setPipedData] = useState<string | null>(null);
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const [isLoading, setIsLoading] = useState<boolean>(true); // Assume loading until checked
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const [error, setError] = useState<string | null>(null);
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const [isPiped, setIsPiped] = useState<boolean>(false);
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useEffect(() => {
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// Determine if input is piped ONLY ONCE
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const checkIsPiped = !stdin || !stdin.isTTY;
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setIsPiped(checkIsPiped);
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if (checkIsPiped) {
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// Piped input detected
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if (isRawModeSupported) {
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setRawMode(false); // Ensure raw mode is off for stream reading
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}
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// Ensure stdin is available (it should be if !isTTY)
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if (!stdin) {
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setError('Stdin stream is unavailable.');
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setIsLoading(false);
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return; // Cannot proceed
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}
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let data = '';
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const handleData = (chunk: Buffer) => {
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data += chunk.toString();
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};
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const handleError = (err: Error) => {
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setError('Error reading from stdin: ' + err.message);
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setIsLoading(false);
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// Decide if the hook should trigger exit or just report the error
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// exit();
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};
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const handleEnd = () => {
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setPipedData(data);
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setIsLoading(false);
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// Don't exit here, let the component using the hook decide
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};
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stdin.on('data', handleData);
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stdin.on('error', handleError);
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stdin.on('end', handleEnd);
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// Cleanup listeners
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return () => {
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stdin.removeListener('data', handleData);
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stdin.removeListener('error', handleError);
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stdin.removeListener('end', handleEnd);
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};
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} else {
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// No piped input (running interactively)
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setIsLoading(false);
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// Optionally set an 'info' state or just let isLoading=false & isPiped=false suffice
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// setError('No piped input detected.'); // Maybe don't treat this as an 'error'
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}
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// Intentionally run only once on mount or when stdin theoretically changes
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}, [stdin, isRawModeSupported, setRawMode /*, exit */]);
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return { data: pipedData, isLoading, error, isPiped };
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}
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