545 lines
18 KiB
TypeScript
545 lines
18 KiB
TypeScript
/**
|
|
* @license
|
|
* Copyright 2025 Google LLC
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
import fs from 'fs';
|
|
import fsPromises from 'fs/promises';
|
|
import path from 'path';
|
|
import { EOL } from 'os';
|
|
import { spawn } from 'child_process';
|
|
import { globStream } from 'glob';
|
|
import { BaseTool, ToolResult } from './tools.js';
|
|
import { SchemaValidator } from '../utils/schemaValidator.js';
|
|
import { makeRelative, shortenPath } from '../utils/paths.js';
|
|
import { getErrorMessage, isNodeError } from '../utils/errors.js';
|
|
import { isGitRepository } from '../utils/gitUtils.js';
|
|
|
|
// --- Interfaces ---
|
|
|
|
/**
|
|
* Parameters for the GrepTool
|
|
*/
|
|
export interface GrepToolParams {
|
|
/**
|
|
* The regular expression pattern to search for in file contents
|
|
*/
|
|
pattern: string;
|
|
|
|
/**
|
|
* The directory to search in (optional, defaults to current directory relative to root)
|
|
*/
|
|
path?: string;
|
|
|
|
/**
|
|
* File pattern to include in the search (e.g. "*.js", "*.{ts,tsx}")
|
|
*/
|
|
include?: string;
|
|
}
|
|
|
|
/**
|
|
* Result object for a single grep match
|
|
*/
|
|
interface GrepMatch {
|
|
filePath: string;
|
|
lineNumber: number;
|
|
line: string;
|
|
}
|
|
|
|
// --- GrepLogic Class ---
|
|
|
|
/**
|
|
* Implementation of the Grep tool logic (moved from CLI)
|
|
*/
|
|
export class GrepTool extends BaseTool<GrepToolParams, ToolResult> {
|
|
static readonly Name = 'search_file_content'; // Keep static name
|
|
|
|
/**
|
|
* Creates a new instance of the GrepLogic
|
|
* @param rootDirectory Root directory to ground this tool in. All operations will be restricted to this directory.
|
|
*/
|
|
constructor(private rootDirectory: string) {
|
|
super(
|
|
GrepTool.Name,
|
|
'SearchText',
|
|
'Searches for a regular expression pattern within the content of files in a specified directory (or current working directory). Can filter files by a glob pattern. Returns the lines containing matches, along with their file paths and line numbers.',
|
|
{
|
|
properties: {
|
|
pattern: {
|
|
description:
|
|
"The regular expression (regex) pattern to search for within file contents (e.g., 'function\\s+myFunction', 'import\\s+\\{.*\\}\\s+from\\s+.*').",
|
|
type: 'string',
|
|
},
|
|
path: {
|
|
description:
|
|
'Optional: The absolute path to the directory to search within. If omitted, searches the current working directory.',
|
|
type: 'string',
|
|
},
|
|
include: {
|
|
description:
|
|
"Optional: A glob pattern to filter which files are searched (e.g., '*.js', '*.{ts,tsx}', 'src/**'). If omitted, searches all files (respecting potential global ignores).",
|
|
type: 'string',
|
|
},
|
|
},
|
|
required: ['pattern'],
|
|
type: 'object',
|
|
},
|
|
);
|
|
// Ensure rootDirectory is absolute and normalized
|
|
this.rootDirectory = path.resolve(rootDirectory);
|
|
}
|
|
|
|
// --- Validation Methods ---
|
|
|
|
/**
|
|
* Checks if a path is within the root directory and resolves it.
|
|
* @param relativePath Path relative to the root directory (or undefined for root).
|
|
* @returns The absolute path if valid and exists.
|
|
* @throws {Error} If path is outside root, doesn't exist, or isn't a directory.
|
|
*/
|
|
private resolveAndValidatePath(relativePath?: string): string {
|
|
const targetPath = path.resolve(this.rootDirectory, relativePath || '.');
|
|
|
|
// Security Check: Ensure the resolved path is still within the root directory.
|
|
if (
|
|
!targetPath.startsWith(this.rootDirectory) &&
|
|
targetPath !== this.rootDirectory
|
|
) {
|
|
throw new Error(
|
|
`Path validation failed: Attempted path "${relativePath || '.'}" resolves outside the allowed root directory "${this.rootDirectory}".`,
|
|
);
|
|
}
|
|
|
|
// Check existence and type after resolving
|
|
try {
|
|
const stats = fs.statSync(targetPath);
|
|
if (!stats.isDirectory()) {
|
|
throw new Error(`Path is not a directory: ${targetPath}`);
|
|
}
|
|
} catch (error: unknown) {
|
|
if (isNodeError(error) && error.code !== 'ENOENT') {
|
|
throw new Error(`Path does not exist: ${targetPath}`);
|
|
}
|
|
throw new Error(
|
|
`Failed to access path stats for ${targetPath}: ${error}`,
|
|
);
|
|
}
|
|
|
|
return targetPath;
|
|
}
|
|
|
|
/**
|
|
* Validates the parameters for the tool
|
|
* @param params Parameters to validate
|
|
* @returns An error message string if invalid, null otherwise
|
|
*/
|
|
validateToolParams(params: GrepToolParams): string | null {
|
|
if (
|
|
this.schema.parameters &&
|
|
!SchemaValidator.validate(
|
|
this.schema.parameters as Record<string, unknown>,
|
|
params,
|
|
)
|
|
) {
|
|
return 'Parameters failed schema validation.';
|
|
}
|
|
|
|
try {
|
|
new RegExp(params.pattern);
|
|
} catch (error) {
|
|
return `Invalid regular expression pattern provided: ${params.pattern}. Error: ${getErrorMessage(error)}`;
|
|
}
|
|
|
|
try {
|
|
this.resolveAndValidatePath(params.path);
|
|
} catch (error) {
|
|
return getErrorMessage(error);
|
|
}
|
|
|
|
return null; // Parameters are valid
|
|
}
|
|
|
|
// --- Core Execution ---
|
|
|
|
/**
|
|
* Executes the grep search with the given parameters
|
|
* @param params Parameters for the grep search
|
|
* @returns Result of the grep search
|
|
*/
|
|
async execute(
|
|
params: GrepToolParams,
|
|
signal: AbortSignal,
|
|
): Promise<ToolResult> {
|
|
const validationError = this.validateToolParams(params);
|
|
if (validationError) {
|
|
return {
|
|
llmContent: `Error: Invalid parameters provided. Reason: ${validationError}`,
|
|
returnDisplay: `Model provided invalid parameters. Error: ${validationError}`,
|
|
};
|
|
}
|
|
|
|
let searchDirAbs: string;
|
|
try {
|
|
searchDirAbs = this.resolveAndValidatePath(params.path);
|
|
const searchDirDisplay = params.path || '.';
|
|
|
|
const matches: GrepMatch[] = await this.performGrepSearch({
|
|
pattern: params.pattern,
|
|
path: searchDirAbs,
|
|
include: params.include,
|
|
signal,
|
|
});
|
|
|
|
if (matches.length === 0) {
|
|
const noMatchMsg = `No matches found for pattern "${params.pattern}" in path "${searchDirDisplay}"${params.include ? ` (filter: "${params.include}")` : ''}.`;
|
|
return { llmContent: noMatchMsg, returnDisplay: `No matches found` };
|
|
}
|
|
|
|
const matchesByFile = matches.reduce(
|
|
(acc, match) => {
|
|
const relativeFilePath =
|
|
path.relative(
|
|
searchDirAbs,
|
|
path.resolve(searchDirAbs, match.filePath),
|
|
) || path.basename(match.filePath);
|
|
if (!acc[relativeFilePath]) {
|
|
acc[relativeFilePath] = [];
|
|
}
|
|
acc[relativeFilePath].push(match);
|
|
acc[relativeFilePath].sort((a, b) => a.lineNumber - b.lineNumber);
|
|
return acc;
|
|
},
|
|
{} as Record<string, GrepMatch[]>,
|
|
);
|
|
|
|
let llmContent = `Found ${matches.length} match(es) for pattern "${params.pattern}" in path "${searchDirDisplay}"${params.include ? ` (filter: "${params.include}")` : ''}:\n---\n`;
|
|
|
|
for (const filePath in matchesByFile) {
|
|
llmContent += `File: ${filePath}\n`;
|
|
matchesByFile[filePath].forEach((match) => {
|
|
const trimmedLine = match.line.trim();
|
|
llmContent += `L${match.lineNumber}: ${trimmedLine}\n`;
|
|
});
|
|
llmContent += '---\n';
|
|
}
|
|
|
|
return {
|
|
llmContent: llmContent.trim(),
|
|
returnDisplay: `Found ${matches.length} matche(s)`,
|
|
};
|
|
} catch (error) {
|
|
console.error(`Error during GrepLogic execution: ${error}`);
|
|
const errorMessage = getErrorMessage(error);
|
|
return {
|
|
llmContent: `Error during grep search operation: ${errorMessage}`,
|
|
returnDisplay: `Error: ${errorMessage}`,
|
|
};
|
|
}
|
|
}
|
|
|
|
// --- Grep Implementation Logic ---
|
|
|
|
/**
|
|
* Checks if a command is available in the system's PATH.
|
|
* @param {string} command The command name (e.g., 'git', 'grep').
|
|
* @returns {Promise<boolean>} True if the command is available, false otherwise.
|
|
*/
|
|
private isCommandAvailable(command: string): Promise<boolean> {
|
|
return new Promise((resolve) => {
|
|
const checkCommand = process.platform === 'win32' ? 'where' : 'command';
|
|
const checkArgs =
|
|
process.platform === 'win32' ? [command] : ['-v', command];
|
|
try {
|
|
const child = spawn(checkCommand, checkArgs, {
|
|
stdio: 'ignore',
|
|
shell: process.platform === 'win32',
|
|
});
|
|
child.on('close', (code) => resolve(code === 0));
|
|
child.on('error', () => resolve(false));
|
|
} catch {
|
|
resolve(false);
|
|
}
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Parses the standard output of grep-like commands (git grep, system grep).
|
|
* Expects format: filePath:lineNumber:lineContent
|
|
* Handles colons within file paths and line content correctly.
|
|
* @param {string} output The raw stdout string.
|
|
* @param {string} basePath The absolute directory the search was run from, for relative paths.
|
|
* @returns {GrepMatch[]} Array of match objects.
|
|
*/
|
|
private parseGrepOutput(output: string, basePath: string): GrepMatch[] {
|
|
const results: GrepMatch[] = [];
|
|
if (!output) return results;
|
|
|
|
const lines = output.split(EOL); // Use OS-specific end-of-line
|
|
|
|
for (const line of lines) {
|
|
if (!line.trim()) continue;
|
|
|
|
// Find the index of the first colon.
|
|
const firstColonIndex = line.indexOf(':');
|
|
if (firstColonIndex === -1) continue; // Malformed
|
|
|
|
// Find the index of the second colon, searching *after* the first one.
|
|
const secondColonIndex = line.indexOf(':', firstColonIndex + 1);
|
|
if (secondColonIndex === -1) continue; // Malformed
|
|
|
|
// Extract parts based on the found colon indices
|
|
const filePathRaw = line.substring(0, firstColonIndex);
|
|
const lineNumberStr = line.substring(
|
|
firstColonIndex + 1,
|
|
secondColonIndex,
|
|
);
|
|
const lineContent = line.substring(secondColonIndex + 1);
|
|
|
|
const lineNumber = parseInt(lineNumberStr, 10);
|
|
|
|
if (!isNaN(lineNumber)) {
|
|
const absoluteFilePath = path.resolve(basePath, filePathRaw);
|
|
const relativeFilePath = path.relative(basePath, absoluteFilePath);
|
|
|
|
results.push({
|
|
filePath: relativeFilePath || path.basename(absoluteFilePath),
|
|
lineNumber,
|
|
line: lineContent,
|
|
});
|
|
}
|
|
}
|
|
return results;
|
|
}
|
|
|
|
/**
|
|
* Gets a description of the grep operation
|
|
* @param params Parameters for the grep operation
|
|
* @returns A string describing the grep
|
|
*/
|
|
getDescription(params: GrepToolParams): string {
|
|
let description = `'${params.pattern}'`;
|
|
if (params.include) {
|
|
description += ` in ${params.include}`;
|
|
}
|
|
if (params.path) {
|
|
const resolvedPath = path.resolve(this.rootDirectory, params.path);
|
|
if (resolvedPath === this.rootDirectory || params.path === '.') {
|
|
description += ` within ./`;
|
|
} else {
|
|
const relativePath = makeRelative(resolvedPath, this.rootDirectory);
|
|
description += ` within ${shortenPath(relativePath)}`;
|
|
}
|
|
}
|
|
return description;
|
|
}
|
|
|
|
/**
|
|
* Performs the actual search using the prioritized strategies.
|
|
* @param options Search options including pattern, absolute path, and include glob.
|
|
* @returns A promise resolving to an array of match objects.
|
|
*/
|
|
private async performGrepSearch(options: {
|
|
pattern: string;
|
|
path: string; // Expects absolute path
|
|
include?: string;
|
|
signal: AbortSignal;
|
|
}): Promise<GrepMatch[]> {
|
|
const { pattern, path: absolutePath, include } = options;
|
|
let strategyUsed = 'none';
|
|
|
|
try {
|
|
// --- Strategy 1: git grep ---
|
|
const isGit = isGitRepository(absolutePath);
|
|
const gitAvailable = isGit && (await this.isCommandAvailable('git'));
|
|
|
|
if (gitAvailable) {
|
|
strategyUsed = 'git grep';
|
|
const gitArgs = [
|
|
'grep',
|
|
'--untracked',
|
|
'-n',
|
|
'-E',
|
|
'--ignore-case',
|
|
pattern,
|
|
];
|
|
if (include) {
|
|
gitArgs.push('--', include);
|
|
}
|
|
|
|
try {
|
|
const output = await new Promise<string>((resolve, reject) => {
|
|
const child = spawn('git', gitArgs, {
|
|
cwd: absolutePath,
|
|
windowsHide: true,
|
|
});
|
|
const stdoutChunks: Buffer[] = [];
|
|
const stderrChunks: Buffer[] = [];
|
|
|
|
child.stdout.on('data', (chunk) => stdoutChunks.push(chunk));
|
|
child.stderr.on('data', (chunk) => stderrChunks.push(chunk));
|
|
child.on('error', (err) =>
|
|
reject(new Error(`Failed to start git grep: ${err.message}`)),
|
|
);
|
|
child.on('close', (code) => {
|
|
const stdoutData = Buffer.concat(stdoutChunks).toString('utf8');
|
|
const stderrData = Buffer.concat(stderrChunks).toString('utf8');
|
|
if (code === 0) resolve(stdoutData);
|
|
else if (code === 1)
|
|
resolve(''); // No matches
|
|
else
|
|
reject(
|
|
new Error(`git grep exited with code ${code}: ${stderrData}`),
|
|
);
|
|
});
|
|
});
|
|
return this.parseGrepOutput(output, absolutePath);
|
|
} catch (gitError: unknown) {
|
|
console.debug(
|
|
`GrepLogic: git grep failed: ${getErrorMessage(gitError)}. Falling back...`,
|
|
);
|
|
}
|
|
}
|
|
|
|
// --- Strategy 2: System grep ---
|
|
const grepAvailable = await this.isCommandAvailable('grep');
|
|
if (grepAvailable) {
|
|
strategyUsed = 'system grep';
|
|
const grepArgs = ['-r', '-n', '-H', '-E'];
|
|
const commonExcludes = ['.git', 'node_modules', 'bower_components'];
|
|
commonExcludes.forEach((dir) => grepArgs.push(`--exclude-dir=${dir}`));
|
|
if (include) {
|
|
grepArgs.push(`--include=${include}`);
|
|
}
|
|
grepArgs.push(pattern);
|
|
grepArgs.push('.');
|
|
|
|
try {
|
|
const output = await new Promise<string>((resolve, reject) => {
|
|
const child = spawn('grep', grepArgs, {
|
|
cwd: absolutePath,
|
|
windowsHide: true,
|
|
});
|
|
const stdoutChunks: Buffer[] = [];
|
|
const stderrChunks: Buffer[] = [];
|
|
|
|
const onData = (chunk: Buffer) => stdoutChunks.push(chunk);
|
|
const onStderr = (chunk: Buffer) => {
|
|
const stderrStr = chunk.toString();
|
|
// Suppress common harmless stderr messages
|
|
if (
|
|
!stderrStr.includes('Permission denied') &&
|
|
!/grep:.*: Is a directory/i.test(stderrStr)
|
|
) {
|
|
stderrChunks.push(chunk);
|
|
}
|
|
};
|
|
const onError = (err: Error) => {
|
|
cleanup();
|
|
reject(new Error(`Failed to start system grep: ${err.message}`));
|
|
};
|
|
const onClose = (code: number | null) => {
|
|
const stdoutData = Buffer.concat(stdoutChunks).toString('utf8');
|
|
const stderrData = Buffer.concat(stderrChunks)
|
|
.toString('utf8')
|
|
.trim();
|
|
cleanup();
|
|
if (code === 0) resolve(stdoutData);
|
|
else if (code === 1)
|
|
resolve(''); // No matches
|
|
else {
|
|
if (stderrData)
|
|
reject(
|
|
new Error(
|
|
`System grep exited with code ${code}: ${stderrData}`,
|
|
),
|
|
);
|
|
else resolve(''); // Exit code > 1 but no stderr, likely just suppressed errors
|
|
}
|
|
};
|
|
|
|
const cleanup = () => {
|
|
child.stdout.removeListener('data', onData);
|
|
child.stderr.removeListener('data', onStderr);
|
|
child.removeListener('error', onError);
|
|
child.removeListener('close', onClose);
|
|
if (child.connected) {
|
|
child.disconnect();
|
|
}
|
|
};
|
|
|
|
child.stdout.on('data', onData);
|
|
child.stderr.on('data', onStderr);
|
|
child.on('error', onError);
|
|
child.on('close', onClose);
|
|
});
|
|
return this.parseGrepOutput(output, absolutePath);
|
|
} catch (grepError: unknown) {
|
|
console.debug(
|
|
`GrepLogic: System grep failed: ${getErrorMessage(grepError)}. Falling back...`,
|
|
);
|
|
}
|
|
}
|
|
|
|
// --- Strategy 3: Pure JavaScript Fallback ---
|
|
console.debug(
|
|
'GrepLogic: Falling back to JavaScript grep implementation.',
|
|
);
|
|
strategyUsed = 'javascript fallback';
|
|
const globPattern = include ? include : '**/*';
|
|
const ignorePatterns = [
|
|
'.git/**',
|
|
'node_modules/**',
|
|
'bower_components/**',
|
|
'.svn/**',
|
|
'.hg/**',
|
|
]; // Use glob patterns for ignores here
|
|
|
|
const filesStream = globStream(globPattern, {
|
|
cwd: absolutePath,
|
|
dot: true,
|
|
ignore: ignorePatterns,
|
|
absolute: true,
|
|
nodir: true,
|
|
signal: options.signal,
|
|
});
|
|
|
|
const regex = new RegExp(pattern, 'i');
|
|
const allMatches: GrepMatch[] = [];
|
|
|
|
for await (const filePath of filesStream) {
|
|
const fileAbsolutePath = filePath as string;
|
|
try {
|
|
const content = await fsPromises.readFile(fileAbsolutePath, 'utf8');
|
|
const lines = content.split(/\r?\n/);
|
|
lines.forEach((line, index) => {
|
|
if (regex.test(line)) {
|
|
allMatches.push({
|
|
filePath:
|
|
path.relative(absolutePath, fileAbsolutePath) ||
|
|
path.basename(fileAbsolutePath),
|
|
lineNumber: index + 1,
|
|
line,
|
|
});
|
|
}
|
|
});
|
|
} catch (readError: unknown) {
|
|
// Ignore errors like permission denied or file gone during read
|
|
if (!isNodeError(readError) || readError.code !== 'ENOENT') {
|
|
console.debug(
|
|
`GrepLogic: Could not read/process ${fileAbsolutePath}: ${getErrorMessage(readError)}`,
|
|
);
|
|
}
|
|
}
|
|
}
|
|
|
|
return allMatches;
|
|
} catch (error: unknown) {
|
|
console.error(
|
|
`GrepLogic: Error in performGrepSearch (Strategy: ${strategyUsed}): ${getErrorMessage(error)}`,
|
|
);
|
|
throw error; // Re-throw
|
|
}
|
|
}
|
|
}
|