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-rw-r--r--packages/core/src/tools/read-file.test.ts525
-rw-r--r--packages/core/src/tools/read-file.ts41
-rw-r--r--packages/core/src/tools/shell.test.ts37
-rw-r--r--packages/core/src/tools/shell.ts7
-rw-r--r--packages/core/src/tools/tool-error.ts4
-rw-r--r--packages/core/src/tools/write-file.test.ts135
-rw-r--r--packages/core/src/tools/write-file.ts58
-rw-r--r--packages/core/src/utils/fileUtils.ts10
8 files changed, 597 insertions, 220 deletions
diff --git a/packages/core/src/tools/read-file.test.ts b/packages/core/src/tools/read-file.test.ts
index 8c11afab..101b74a5 100644
--- a/packages/core/src/tools/read-file.test.ts
+++ b/packages/core/src/tools/read-file.test.ts
@@ -6,6 +6,7 @@
import { describe, it, expect, beforeEach, afterEach } from 'vitest';
import { ReadFileTool, ReadFileToolParams } from './read-file.js';
+import { ToolErrorType } from './tool-error.js';
import path from 'path';
import os from 'os';
import fs from 'fs';
@@ -47,276 +48,390 @@ describe('ReadFileTool', () => {
absolute_path: path.join(tempRootDir, 'test.txt'),
};
const result = tool.build(params);
- expect(result).not.toBeTypeOf('string');
- expect(typeof result).toBe('object');
- expect(
- (result as ToolInvocation<ReadFileToolParams, ToolResult>).params,
- ).toEqual(params);
+ expect(typeof result).not.toBe('string');
});
- it('should return an invocation for valid params with offset and limit', () => {
+ it('should throw error if file path is relative', () => {
const params: ReadFileToolParams = {
- absolute_path: path.join(tempRootDir, 'test.txt'),
- offset: 0,
- limit: 10,
+ absolute_path: 'relative/path.txt',
};
- const result = tool.build(params);
- expect(result).not.toBeTypeOf('string');
- });
-
- it('should throw error for relative path', () => {
- const params: ReadFileToolParams = { absolute_path: 'test.txt' };
expect(() => tool.build(params)).toThrow(
- `File path must be absolute, but was relative: test.txt. You must provide an absolute path.`,
+ 'File path must be absolute, but was relative: relative/path.txt. You must provide an absolute path.',
);
});
- it('should throw error for path outside root', () => {
- const outsidePath = path.resolve(os.tmpdir(), 'outside-root.txt');
- const params: ReadFileToolParams = { absolute_path: outsidePath };
+ it('should throw error if path is outside root', () => {
+ const params: ReadFileToolParams = {
+ absolute_path: '/outside/root.txt',
+ };
expect(() => tool.build(params)).toThrow(
- 'File path must be within one of the workspace directories',
+ /File path must be within one of the workspace directories/,
);
});
- it('should throw error for negative offset', () => {
+ it('should throw error if offset is negative', () => {
const params: ReadFileToolParams = {
absolute_path: path.join(tempRootDir, 'test.txt'),
offset: -1,
- limit: 10,
};
expect(() => tool.build(params)).toThrow(
'Offset must be a non-negative number',
);
});
- it('should throw error for non-positive limit', () => {
- const paramsZero: ReadFileToolParams = {
+ it('should throw error if limit is zero or negative', () => {
+ const params: ReadFileToolParams = {
absolute_path: path.join(tempRootDir, 'test.txt'),
- offset: 0,
limit: 0,
};
- expect(() => tool.build(paramsZero)).toThrow(
+ expect(() => tool.build(params)).toThrow(
'Limit must be a positive number',
);
- const paramsNegative: ReadFileToolParams = {
- absolute_path: path.join(tempRootDir, 'test.txt'),
- offset: 0,
- limit: -5,
+ });
+ });
+
+ describe('getDescription', () => {
+ it('should return relative path without limit/offset', () => {
+ const subDir = path.join(tempRootDir, 'sub', 'dir');
+ const params: ReadFileToolParams = {
+ absolute_path: path.join(subDir, 'file.txt'),
};
- expect(() => tool.build(paramsNegative)).toThrow(
- 'Limit must be a positive number',
- );
+ const invocation = tool.build(params);
+ expect(typeof invocation).not.toBe('string');
+ expect(
+ (
+ invocation as ToolInvocation<ReadFileToolParams, ToolResult>
+ ).getDescription(),
+ ).toBe(path.join('sub', 'dir', 'file.txt'));
});
- it('should throw error for schema validation failure (e.g. missing path)', () => {
- const params = { offset: 0 } as unknown as ReadFileToolParams;
- expect(() => tool.build(params)).toThrow(
- `params must have required property 'absolute_path'`,
+ it('should return shortened path when file path is deep', () => {
+ const deepPath = path.join(
+ tempRootDir,
+ 'very',
+ 'deep',
+ 'directory',
+ 'structure',
+ 'that',
+ 'exceeds',
+ 'the',
+ 'normal',
+ 'limit',
+ 'file.txt',
);
+ const params: ReadFileToolParams = { absolute_path: deepPath };
+ const invocation = tool.build(params);
+ expect(typeof invocation).not.toBe('string');
+ const desc = (
+ invocation as ToolInvocation<ReadFileToolParams, ToolResult>
+ ).getDescription();
+ expect(desc).toContain('...');
+ expect(desc).toContain('file.txt');
});
- });
- describe('ToolInvocation', () => {
- describe('getDescription', () => {
- it('should return a shortened, relative path', () => {
- const filePath = path.join(tempRootDir, 'sub', 'dir', 'file.txt');
- const params: ReadFileToolParams = { absolute_path: filePath };
- const invocation = tool.build(params);
- expect(typeof invocation).not.toBe('string');
- expect(
- (
- invocation as ToolInvocation<ReadFileToolParams, ToolResult>
- ).getDescription(),
- ).toBe(path.join('sub', 'dir', 'file.txt'));
- });
+ it('should handle non-normalized file paths correctly', () => {
+ const subDir = path.join(tempRootDir, 'sub', 'dir');
+ const params: ReadFileToolParams = {
+ absolute_path: path.join(subDir, '..', 'dir', 'file.txt'),
+ };
+ const invocation = tool.build(params);
+ expect(typeof invocation).not.toBe('string');
+ expect(
+ (
+ invocation as ToolInvocation<ReadFileToolParams, ToolResult>
+ ).getDescription(),
+ ).toBe(path.join('sub', 'dir', 'file.txt'));
+ });
- it('should return . if path is the root directory', () => {
- const params: ReadFileToolParams = { absolute_path: tempRootDir };
- const invocation = tool.build(params);
- expect(typeof invocation).not.toBe('string');
- expect(
- (
- invocation as ToolInvocation<ReadFileToolParams, ToolResult>
- ).getDescription(),
- ).toBe('.');
- });
+ it('should return . if path is the root directory', () => {
+ const params: ReadFileToolParams = { absolute_path: tempRootDir };
+ const invocation = tool.build(params);
+ expect(typeof invocation).not.toBe('string');
+ expect(
+ (
+ invocation as ToolInvocation<ReadFileToolParams, ToolResult>
+ ).getDescription(),
+ ).toBe('.');
});
+ });
- describe('execute', () => {
- it('should return error if file does not exist', async () => {
- const filePath = path.join(tempRootDir, 'nonexistent.txt');
- const params: ReadFileToolParams = { absolute_path: filePath };
- const invocation = tool.build(params) as ToolInvocation<
- ReadFileToolParams,
- ToolResult
- >;
+ describe('execute', () => {
+ it('should return error if file does not exist', async () => {
+ const filePath = path.join(tempRootDir, 'nonexistent.txt');
+ const params: ReadFileToolParams = { absolute_path: filePath };
+ const invocation = tool.build(params) as ToolInvocation<
+ ReadFileToolParams,
+ ToolResult
+ >;
- expect(await invocation.execute(abortSignal)).toEqual({
- llmContent: `File not found: ${filePath}`,
- returnDisplay: 'File not found.',
- });
+ const result = await invocation.execute(abortSignal);
+ expect(result).toEqual({
+ llmContent:
+ 'Could not read file because no file was found at the specified path.',
+ returnDisplay: 'File not found.',
+ error: {
+ message: `File not found: ${filePath}`,
+ type: ToolErrorType.FILE_NOT_FOUND,
+ },
});
+ });
- it('should return success result for a text file', async () => {
- const filePath = path.join(tempRootDir, 'textfile.txt');
- const fileContent = 'This is a test file.';
- await fsp.writeFile(filePath, fileContent, 'utf-8');
- const params: ReadFileToolParams = { absolute_path: filePath };
- const invocation = tool.build(params) as ToolInvocation<
- ReadFileToolParams,
- ToolResult
- >;
+ it('should return success result for a text file', async () => {
+ const filePath = path.join(tempRootDir, 'textfile.txt');
+ const fileContent = 'This is a test file.';
+ await fsp.writeFile(filePath, fileContent, 'utf-8');
+ const params: ReadFileToolParams = { absolute_path: filePath };
+ const invocation = tool.build(params) as ToolInvocation<
+ ReadFileToolParams,
+ ToolResult
+ >;
- expect(await invocation.execute(abortSignal)).toEqual({
- llmContent: fileContent,
- returnDisplay: '',
- });
+ expect(await invocation.execute(abortSignal)).toEqual({
+ llmContent: fileContent,
+ returnDisplay: '',
});
+ });
- it('should return success result for an image file', async () => {
- // A minimal 1x1 transparent PNG file.
- const pngContent = Buffer.from([
- 137, 80, 78, 71, 13, 10, 26, 10, 0, 0, 0, 13, 73, 72, 68, 82, 0, 0, 0,
- 1, 0, 0, 0, 1, 8, 6, 0, 0, 0, 31, 21, 196, 137, 0, 0, 0, 10, 73, 68,
- 65, 84, 120, 156, 99, 0, 1, 0, 0, 5, 0, 1, 13, 10, 45, 180, 0, 0, 0,
- 0, 73, 69, 78, 68, 174, 66, 96, 130,
- ]);
- const filePath = path.join(tempRootDir, 'image.png');
- await fsp.writeFile(filePath, pngContent);
- const params: ReadFileToolParams = { absolute_path: filePath };
- const invocation = tool.build(params) as ToolInvocation<
- ReadFileToolParams,
- ToolResult
- >;
+ it('should return error if path is a directory', async () => {
+ const dirPath = path.join(tempRootDir, 'directory');
+ await fsp.mkdir(dirPath);
+ const params: ReadFileToolParams = { absolute_path: dirPath };
+ const invocation = tool.build(params) as ToolInvocation<
+ ReadFileToolParams,
+ ToolResult
+ >;
- expect(await invocation.execute(abortSignal)).toEqual({
- llmContent: {
- inlineData: {
- mimeType: 'image/png',
- data: pngContent.toString('base64'),
- },
- },
- returnDisplay: `Read image file: image.png`,
- });
+ const result = await invocation.execute(abortSignal);
+ expect(result).toEqual({
+ llmContent:
+ 'Could not read file because the provided path is a directory, not a file.',
+ returnDisplay: 'Path is a directory.',
+ error: {
+ message: `Path is a directory, not a file: ${dirPath}`,
+ type: ToolErrorType.INVALID_TOOL_PARAMS,
+ },
});
+ });
- it('should treat a non-image file with image extension as an image', async () => {
- const filePath = path.join(tempRootDir, 'fake-image.png');
- const fileContent = 'This is not a real png.';
- await fsp.writeFile(filePath, fileContent, 'utf-8');
- const params: ReadFileToolParams = { absolute_path: filePath };
- const invocation = tool.build(params) as ToolInvocation<
- ReadFileToolParams,
- ToolResult
- >;
+ it('should return error for a file that is too large', async () => {
+ const filePath = path.join(tempRootDir, 'largefile.txt');
+ // 21MB of content exceeds 20MB limit
+ const largeContent = 'x'.repeat(21 * 1024 * 1024);
+ await fsp.writeFile(filePath, largeContent, 'utf-8');
+ const params: ReadFileToolParams = { absolute_path: filePath };
+ const invocation = tool.build(params) as ToolInvocation<
+ ReadFileToolParams,
+ ToolResult
+ >;
- expect(await invocation.execute(abortSignal)).toEqual({
- llmContent: {
- inlineData: {
- mimeType: 'image/png',
- data: Buffer.from(fileContent).toString('base64'),
- },
- },
- returnDisplay: `Read image file: fake-image.png`,
- });
- });
+ const result = await invocation.execute(abortSignal);
+ expect(result).toHaveProperty('error');
+ expect(result.error?.type).toBe(ToolErrorType.FILE_TOO_LARGE);
+ expect(result.error?.message).toContain(
+ 'File size exceeds the 20MB limit',
+ );
+ });
- it('should return a structured message when a slice of a text file is read', async () => {
- const filePath = path.join(tempRootDir, 'paginated.txt');
- const fileContent = Array.from(
- { length: 20 },
- (_, i) => `Line ${i + 1}`,
- ).join('\n');
- await fsp.writeFile(filePath, fileContent, 'utf-8');
+ it('should handle text file with lines exceeding maximum length', async () => {
+ const filePath = path.join(tempRootDir, 'longlines.txt');
+ const longLine = 'a'.repeat(2500); // Exceeds MAX_LINE_LENGTH_TEXT_FILE (2000)
+ const fileContent = `Short line\n${longLine}\nAnother short line`;
+ await fsp.writeFile(filePath, fileContent, 'utf-8');
+ const params: ReadFileToolParams = { absolute_path: filePath };
+ const invocation = tool.build(params) as ToolInvocation<
+ ReadFileToolParams,
+ ToolResult
+ >;
- const params: ReadFileToolParams = {
- absolute_path: filePath,
- offset: 5, // Start from line 6
- limit: 3,
- };
- const invocation = tool.build(params) as ToolInvocation<
- ReadFileToolParams,
- ToolResult
- >;
+ const result = await invocation.execute(abortSignal);
+ expect(result.llmContent).toContain(
+ 'IMPORTANT: The file content has been truncated',
+ );
+ expect(result.llmContent).toContain('--- FILE CONTENT (truncated) ---');
+ expect(result.returnDisplay).toContain('some lines were shortened');
+ });
- const result = await invocation.execute(abortSignal);
+ it('should handle image file and return appropriate content', async () => {
+ const imagePath = path.join(tempRootDir, 'image.png');
+ // Minimal PNG header
+ const pngHeader = Buffer.from([
+ 0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a,
+ ]);
+ await fsp.writeFile(imagePath, pngHeader);
+ const params: ReadFileToolParams = { absolute_path: imagePath };
+ const invocation = tool.build(params) as ToolInvocation<
+ ReadFileToolParams,
+ ToolResult
+ >;
- const expectedLlmContent = `
-IMPORTANT: The file content has been truncated.
-Status: Showing lines 6-8 of 20 total lines.
-Action: To read more of the file, you can use the 'offset' and 'limit' parameters in a subsequent 'read_file' call. For example, to read the next section of the file, use offset: 8.
+ const result = await invocation.execute(abortSignal);
+ expect(result.llmContent).toEqual({
+ inlineData: {
+ data: pngHeader.toString('base64'),
+ mimeType: 'image/png',
+ },
+ });
+ expect(result.returnDisplay).toBe('Read image file: image.png');
+ });
---- FILE CONTENT (truncated) ---
-Line 6
-Line 7
-Line 8`;
+ it('should handle PDF file and return appropriate content', async () => {
+ const pdfPath = path.join(tempRootDir, 'document.pdf');
+ // Minimal PDF header
+ const pdfHeader = Buffer.from('%PDF-1.4');
+ await fsp.writeFile(pdfPath, pdfHeader);
+ const params: ReadFileToolParams = { absolute_path: pdfPath };
+ const invocation = tool.build(params) as ToolInvocation<
+ ReadFileToolParams,
+ ToolResult
+ >;
- expect(result.llmContent).toEqual(expectedLlmContent);
- expect(result.returnDisplay).toBe(
- 'Read lines 6-8 of 20 from paginated.txt',
- );
+ const result = await invocation.execute(abortSignal);
+ expect(result.llmContent).toEqual({
+ inlineData: {
+ data: pdfHeader.toString('base64'),
+ mimeType: 'application/pdf',
+ },
});
+ expect(result.returnDisplay).toBe('Read pdf file: document.pdf');
+ });
- describe('with .geminiignore', () => {
- beforeEach(async () => {
- await fsp.writeFile(
- path.join(tempRootDir, '.geminiignore'),
- ['foo.*', 'ignored/'].join('\n'),
- );
- });
+ it('should handle binary file and skip content', async () => {
+ const binPath = path.join(tempRootDir, 'binary.bin');
+ // Binary data with null bytes
+ const binaryData = Buffer.from([0x00, 0xff, 0x00, 0xff]);
+ await fsp.writeFile(binPath, binaryData);
+ const params: ReadFileToolParams = { absolute_path: binPath };
+ const invocation = tool.build(params) as ToolInvocation<
+ ReadFileToolParams,
+ ToolResult
+ >;
- it('should throw error if path is ignored by a .geminiignore pattern', async () => {
- const ignoredFilePath = path.join(tempRootDir, 'foo.bar');
- await fsp.writeFile(ignoredFilePath, 'content', 'utf-8');
- const params: ReadFileToolParams = {
- absolute_path: ignoredFilePath,
- };
- const expectedError = `File path '${ignoredFilePath}' is ignored by .geminiignore pattern(s).`;
- expect(() => tool.build(params)).toThrow(expectedError);
- });
+ const result = await invocation.execute(abortSignal);
+ expect(result.llmContent).toBe(
+ 'Cannot display content of binary file: binary.bin',
+ );
+ expect(result.returnDisplay).toBe('Skipped binary file: binary.bin');
+ });
- it('should throw error if path is in an ignored directory', async () => {
- const ignoredDirPath = path.join(tempRootDir, 'ignored');
- await fsp.mkdir(ignoredDirPath);
- const filePath = path.join(ignoredDirPath, 'somefile.txt');
- await fsp.writeFile(filePath, 'content', 'utf-8');
+ it('should handle SVG file as text', async () => {
+ const svgPath = path.join(tempRootDir, 'image.svg');
+ const svgContent = '<svg><circle cx="50" cy="50" r="40"/></svg>';
+ await fsp.writeFile(svgPath, svgContent, 'utf-8');
+ const params: ReadFileToolParams = { absolute_path: svgPath };
+ const invocation = tool.build(params) as ToolInvocation<
+ ReadFileToolParams,
+ ToolResult
+ >;
- const params: ReadFileToolParams = {
- absolute_path: filePath,
- };
- const expectedError = `File path '${filePath}' is ignored by .geminiignore pattern(s).`;
- expect(() => tool.build(params)).toThrow(expectedError);
- });
- });
+ const result = await invocation.execute(abortSignal);
+ expect(result.llmContent).toBe(svgContent);
+ expect(result.returnDisplay).toBe('Read SVG as text: image.svg');
});
- });
- describe('workspace boundary validation', () => {
- it('should validate paths are within workspace root', () => {
- const params: ReadFileToolParams = {
- absolute_path: path.join(tempRootDir, 'file.txt'),
- };
- expect(() => tool.build(params)).not.toThrow();
- });
+ it('should handle large SVG file', async () => {
+ const svgPath = path.join(tempRootDir, 'large.svg');
+ // Create SVG content larger than 1MB
+ const largeContent = '<svg>' + 'x'.repeat(1024 * 1024 + 1) + '</svg>';
+ await fsp.writeFile(svgPath, largeContent, 'utf-8');
+ const params: ReadFileToolParams = { absolute_path: svgPath };
+ const invocation = tool.build(params) as ToolInvocation<
+ ReadFileToolParams,
+ ToolResult
+ >;
- it('should reject paths outside workspace root', () => {
- const params: ReadFileToolParams = {
- absolute_path: '/etc/passwd',
- };
- expect(() => tool.build(params)).toThrow(
- 'File path must be within one of the workspace directories',
+ const result = await invocation.execute(abortSignal);
+ expect(result.llmContent).toBe(
+ 'Cannot display content of SVG file larger than 1MB: large.svg',
);
+ expect(result.returnDisplay).toBe(
+ 'Skipped large SVG file (>1MB): large.svg',
+ );
+ });
+
+ it('should handle empty file', async () => {
+ const emptyPath = path.join(tempRootDir, 'empty.txt');
+ await fsp.writeFile(emptyPath, '', 'utf-8');
+ const params: ReadFileToolParams = { absolute_path: emptyPath };
+ const invocation = tool.build(params) as ToolInvocation<
+ ReadFileToolParams,
+ ToolResult
+ >;
+
+ const result = await invocation.execute(abortSignal);
+ expect(result.llmContent).toBe('');
+ expect(result.returnDisplay).toBe('');
});
- it('should provide clear error message with workspace directories', () => {
- const outsidePath = path.join(os.tmpdir(), 'outside-workspace.txt');
+ it('should support offset and limit for text files', async () => {
+ const filePath = path.join(tempRootDir, 'paginated.txt');
+ const lines = Array.from({ length: 20 }, (_, i) => `Line ${i + 1}`);
+ const fileContent = lines.join('\n');
+ await fsp.writeFile(filePath, fileContent, 'utf-8');
+
const params: ReadFileToolParams = {
- absolute_path: outsidePath,
+ absolute_path: filePath,
+ offset: 5, // Start from line 6
+ limit: 3,
};
- expect(() => tool.build(params)).toThrow(
- 'File path must be within one of the workspace directories',
+ const invocation = tool.build(params) as ToolInvocation<
+ ReadFileToolParams,
+ ToolResult
+ >;
+
+ const result = await invocation.execute(abortSignal);
+ expect(result.llmContent).toContain(
+ 'IMPORTANT: The file content has been truncated',
);
+ expect(result.llmContent).toContain(
+ 'Status: Showing lines 6-8 of 20 total lines',
+ );
+ expect(result.llmContent).toContain('Line 6');
+ expect(result.llmContent).toContain('Line 7');
+ expect(result.llmContent).toContain('Line 8');
+ expect(result.returnDisplay).toBe(
+ 'Read lines 6-8 of 20 from paginated.txt',
+ );
+ });
+
+ describe('with .geminiignore', () => {
+ beforeEach(async () => {
+ await fsp.writeFile(
+ path.join(tempRootDir, '.geminiignore'),
+ ['foo.*', 'ignored/'].join('\n'),
+ );
+ });
+
+ it('should throw error if path is ignored by a .geminiignore pattern', async () => {
+ const ignoredFilePath = path.join(tempRootDir, 'foo.bar');
+ await fsp.writeFile(ignoredFilePath, 'content', 'utf-8');
+ const params: ReadFileToolParams = {
+ absolute_path: ignoredFilePath,
+ };
+ const expectedError = `File path '${ignoredFilePath}' is ignored by .geminiignore pattern(s).`;
+ expect(() => tool.build(params)).toThrow(expectedError);
+ });
+
+ it('should throw error if file is in an ignored directory', async () => {
+ const ignoredDirPath = path.join(tempRootDir, 'ignored');
+ await fsp.mkdir(ignoredDirPath, { recursive: true });
+ const ignoredFilePath = path.join(ignoredDirPath, 'file.txt');
+ await fsp.writeFile(ignoredFilePath, 'content', 'utf-8');
+ const params: ReadFileToolParams = {
+ absolute_path: ignoredFilePath,
+ };
+ const expectedError = `File path '${ignoredFilePath}' is ignored by .geminiignore pattern(s).`;
+ expect(() => tool.build(params)).toThrow(expectedError);
+ });
+
+ it('should allow reading non-ignored files', async () => {
+ const allowedFilePath = path.join(tempRootDir, 'allowed.txt');
+ await fsp.writeFile(allowedFilePath, 'content', 'utf-8');
+ const params: ReadFileToolParams = {
+ absolute_path: allowedFilePath,
+ };
+ const invocation = tool.build(params);
+ expect(typeof invocation).not.toBe('string');
+ });
});
});
});
diff --git a/packages/core/src/tools/read-file.ts b/packages/core/src/tools/read-file.ts
index 4c1d044c..2ab50282 100644
--- a/packages/core/src/tools/read-file.ts
+++ b/packages/core/src/tools/read-file.ts
@@ -15,6 +15,7 @@ import {
ToolLocation,
ToolResult,
} from './tools.js';
+import { ToolErrorType } from './tool-error.js';
import { PartUnion, Type } from '@google/genai';
import {
processSingleFileContent,
@@ -78,9 +79,45 @@ class ReadFileToolInvocation extends BaseToolInvocation<
);
if (result.error) {
+ // Map error messages to ToolErrorType
+ let errorType: ToolErrorType;
+ let llmContent: string;
+
+ // Check error message patterns to determine error type
+ if (
+ result.error.includes('File not found') ||
+ result.error.includes('does not exist') ||
+ result.error.includes('ENOENT')
+ ) {
+ errorType = ToolErrorType.FILE_NOT_FOUND;
+ llmContent =
+ 'Could not read file because no file was found at the specified path.';
+ } else if (
+ result.error.includes('is a directory') ||
+ result.error.includes('EISDIR')
+ ) {
+ errorType = ToolErrorType.INVALID_TOOL_PARAMS;
+ llmContent =
+ 'Could not read file because the provided path is a directory, not a file.';
+ } else if (
+ result.error.includes('too large') ||
+ result.error.includes('File size exceeds')
+ ) {
+ errorType = ToolErrorType.FILE_TOO_LARGE;
+ llmContent = `Could not read file. ${result.error}`;
+ } else {
+ // Other read errors map to READ_CONTENT_FAILURE
+ errorType = ToolErrorType.READ_CONTENT_FAILURE;
+ llmContent = `Could not read file. ${result.error}`;
+ }
+
return {
- llmContent: result.error, // The detailed error for LLM
- returnDisplay: result.returnDisplay || 'Error reading file', // User-friendly error
+ llmContent,
+ returnDisplay: result.returnDisplay || 'Error reading file',
+ error: {
+ message: result.error,
+ type: errorType,
+ },
};
}
diff --git a/packages/core/src/tools/shell.test.ts b/packages/core/src/tools/shell.test.ts
index 7f237e3d..55720af5 100644
--- a/packages/core/src/tools/shell.test.ts
+++ b/packages/core/src/tools/shell.test.ts
@@ -25,6 +25,7 @@ vi.mock('../utils/summarizer.js');
import { isCommandAllowed } from '../utils/shell-utils.js';
import { ShellTool } from './shell.js';
+import { ToolErrorType } from './tool-error.js';
import { type Config } from '../config/config.js';
import {
type ShellExecutionResult,
@@ -203,6 +204,42 @@ describe('ShellTool', () => {
expect(result.llmContent).not.toContain('pgrep');
});
+ it('should return error with error property for invalid parameters', async () => {
+ const result = await shellTool.execute(
+ { command: '' }, // Empty command is invalid
+ mockAbortSignal,
+ );
+
+ expect(result.llmContent).toContain(
+ 'Could not execute command due to invalid parameters:',
+ );
+ expect(result.returnDisplay).toBe('Command cannot be empty.');
+ expect(result.error).toEqual({
+ message: 'Command cannot be empty.',
+ type: ToolErrorType.INVALID_TOOL_PARAMS,
+ });
+ });
+
+ it('should return error with error property for invalid directory', async () => {
+ vi.mocked(fs.existsSync).mockReturnValue(false);
+ const result = await shellTool.execute(
+ { command: 'ls', directory: 'nonexistent' },
+ mockAbortSignal,
+ );
+
+ expect(result.llmContent).toContain(
+ 'Could not execute command due to invalid parameters:',
+ );
+ expect(result.returnDisplay).toBe(
+ "Directory 'nonexistent' is not a registered workspace directory.",
+ );
+ expect(result.error).toEqual({
+ message:
+ "Directory 'nonexistent' is not a registered workspace directory.",
+ type: ToolErrorType.INVALID_TOOL_PARAMS,
+ });
+ });
+
it('should summarize output when configured', async () => {
(mockConfig.getSummarizeToolOutputConfig as Mock).mockReturnValue({
[shellTool.name]: { tokenBudget: 1000 },
diff --git a/packages/core/src/tools/shell.ts b/packages/core/src/tools/shell.ts
index 96423af1..6106c0cd 100644
--- a/packages/core/src/tools/shell.ts
+++ b/packages/core/src/tools/shell.ts
@@ -17,6 +17,7 @@ import {
ToolConfirmationOutcome,
Icon,
} from './tools.js';
+import { ToolErrorType } from './tool-error.js';
import { Type } from '@google/genai';
import { SchemaValidator } from '../utils/schemaValidator.js';
import { getErrorMessage } from '../utils/errors.js';
@@ -186,8 +187,12 @@ export class ShellTool extends BaseTool<ShellToolParams, ToolResult> {
});
if (validationError) {
return {
- llmContent: validationError,
+ llmContent: `Could not execute command due to invalid parameters: ${validationError}`,
returnDisplay: validationError,
+ error: {
+ message: validationError,
+ type: ToolErrorType.INVALID_TOOL_PARAMS,
+ },
};
}
diff --git a/packages/core/src/tools/tool-error.ts b/packages/core/src/tools/tool-error.ts
index 38caa1da..2702de02 100644
--- a/packages/core/src/tools/tool-error.ts
+++ b/packages/core/src/tools/tool-error.ts
@@ -19,6 +19,10 @@ export enum ToolErrorType {
FILE_WRITE_FAILURE = 'file_write_failure',
READ_CONTENT_FAILURE = 'read_content_failure',
ATTEMPT_TO_CREATE_EXISTING_FILE = 'attempt_to_create_existing_file',
+ FILE_TOO_LARGE = 'file_too_large',
+ PERMISSION_DENIED = 'permission_denied',
+ NO_SPACE_LEFT = 'no_space_left',
+ TARGET_IS_DIRECTORY = 'target_is_directory',
// Edit-specific Errors
EDIT_PREPARATION_FAILURE = 'edit_preparation_failure',
diff --git a/packages/core/src/tools/write-file.test.ts b/packages/core/src/tools/write-file.test.ts
index 563579bb..1967b99b 100644
--- a/packages/core/src/tools/write-file.test.ts
+++ b/packages/core/src/tools/write-file.test.ts
@@ -14,6 +14,7 @@ import {
type Mocked,
} from 'vitest';
import { WriteFileTool, WriteFileToolParams } from './write-file.js';
+import { ToolErrorType } from './tool-error.js';
import {
FileDiff,
ToolConfirmationOutcome,
@@ -464,18 +465,27 @@ describe('WriteFileTool', () => {
it('should return error if params are invalid (relative path)', async () => {
const params = { file_path: 'relative.txt', content: 'test' };
const result = await tool.execute(params, abortSignal);
- expect(result.llmContent).toMatch(/Error: Invalid parameters provided/);
- expect(result.returnDisplay).toMatch(/Error: File path must be absolute/);
+ expect(result.llmContent).toContain(
+ 'Could not write file due to invalid parameters:',
+ );
+ expect(result.returnDisplay).toMatch(/File path must be absolute/);
+ expect(result.error).toEqual({
+ message: 'File path must be absolute: relative.txt',
+ type: ToolErrorType.INVALID_TOOL_PARAMS,
+ });
});
it('should return error if params are invalid (path outside root)', async () => {
const outsidePath = path.resolve(tempDir, 'outside-root.txt');
const params = { file_path: outsidePath, content: 'test' };
const result = await tool.execute(params, abortSignal);
- expect(result.llmContent).toMatch(/Error: Invalid parameters provided/);
+ expect(result.llmContent).toContain(
+ 'Could not write file due to invalid parameters:',
+ );
expect(result.returnDisplay).toContain(
- 'Error: File path must be within one of the workspace directories',
+ 'File path must be within one of the workspace directories',
);
+ expect(result.error?.type).toBe(ToolErrorType.INVALID_TOOL_PARAMS);
});
it('should return error if _getCorrectedFileContent returns an error during execute', async () => {
@@ -490,10 +500,15 @@ describe('WriteFileTool', () => {
});
const result = await tool.execute(params, abortSignal);
- expect(result.llmContent).toMatch(/Error checking existing file/);
+ expect(result.llmContent).toContain('Error checking existing file:');
expect(result.returnDisplay).toMatch(
/Error checking existing file: Simulated read error for execute/,
);
+ expect(result.error).toEqual({
+ message:
+ 'Error checking existing file: Simulated read error for execute',
+ type: ToolErrorType.FILE_WRITE_FAILURE,
+ });
vi.spyOn(fs, 'readFileSync').mockImplementation(originalReadFileSync);
fs.chmodSync(filePath, 0o600);
@@ -709,4 +724,114 @@ describe('WriteFileTool', () => {
expect(error).toContain(rootDir);
});
});
+
+ describe('specific error types for write failures', () => {
+ const abortSignal = new AbortController().signal;
+
+ it('should return PERMISSION_DENIED error when write fails with EACCES', async () => {
+ const filePath = path.join(rootDir, 'permission_denied_file.txt');
+ const content = 'test content';
+
+ // Mock writeFileSync to throw EACCES error
+ const originalWriteFileSync = fs.writeFileSync;
+ vi.spyOn(fs, 'writeFileSync').mockImplementationOnce(() => {
+ const error = new Error('Permission denied') as NodeJS.ErrnoException;
+ error.code = 'EACCES';
+ throw error;
+ });
+
+ const params = { file_path: filePath, content };
+ const result = await tool.execute(params, abortSignal);
+
+ expect(result.error?.type).toBe(ToolErrorType.PERMISSION_DENIED);
+ expect(result.llmContent).toContain(
+ `Permission denied writing to file: ${filePath} (EACCES)`,
+ );
+ expect(result.returnDisplay).toContain('Permission denied');
+
+ vi.spyOn(fs, 'writeFileSync').mockImplementation(originalWriteFileSync);
+ });
+
+ it('should return NO_SPACE_LEFT error when write fails with ENOSPC', async () => {
+ const filePath = path.join(rootDir, 'no_space_file.txt');
+ const content = 'test content';
+
+ // Mock writeFileSync to throw ENOSPC error
+ const originalWriteFileSync = fs.writeFileSync;
+ vi.spyOn(fs, 'writeFileSync').mockImplementationOnce(() => {
+ const error = new Error(
+ 'No space left on device',
+ ) as NodeJS.ErrnoException;
+ error.code = 'ENOSPC';
+ throw error;
+ });
+
+ const params = { file_path: filePath, content };
+ const result = await tool.execute(params, abortSignal);
+
+ expect(result.error?.type).toBe(ToolErrorType.NO_SPACE_LEFT);
+ expect(result.llmContent).toContain(
+ `No space left on device: ${filePath} (ENOSPC)`,
+ );
+ expect(result.returnDisplay).toContain('No space left');
+
+ vi.spyOn(fs, 'writeFileSync').mockImplementation(originalWriteFileSync);
+ });
+
+ it('should return TARGET_IS_DIRECTORY error when write fails with EISDIR', async () => {
+ const dirPath = path.join(rootDir, 'test_directory');
+ const content = 'test content';
+
+ // Mock fs.existsSync to return false to bypass validation
+ const originalExistsSync = fs.existsSync;
+ vi.spyOn(fs, 'existsSync').mockImplementation((path) => {
+ if (path === dirPath) {
+ return false; // Pretend directory doesn't exist to bypass validation
+ }
+ return originalExistsSync(path as string);
+ });
+
+ // Mock writeFileSync to throw EISDIR error
+ const originalWriteFileSync = fs.writeFileSync;
+ vi.spyOn(fs, 'writeFileSync').mockImplementationOnce(() => {
+ const error = new Error('Is a directory') as NodeJS.ErrnoException;
+ error.code = 'EISDIR';
+ throw error;
+ });
+
+ const params = { file_path: dirPath, content };
+ const result = await tool.execute(params, abortSignal);
+
+ expect(result.error?.type).toBe(ToolErrorType.TARGET_IS_DIRECTORY);
+ expect(result.llmContent).toContain(
+ `Target is a directory, not a file: ${dirPath} (EISDIR)`,
+ );
+ expect(result.returnDisplay).toContain('Target is a directory');
+
+ vi.spyOn(fs, 'existsSync').mockImplementation(originalExistsSync);
+ vi.spyOn(fs, 'writeFileSync').mockImplementation(originalWriteFileSync);
+ });
+
+ it('should return FILE_WRITE_FAILURE for generic write errors', async () => {
+ const filePath = path.join(rootDir, 'generic_error_file.txt');
+ const content = 'test content';
+
+ // Ensure fs.existsSync is not mocked for this test
+ vi.restoreAllMocks();
+
+ // Mock writeFileSync to throw generic error
+ vi.spyOn(fs, 'writeFileSync').mockImplementationOnce(() => {
+ throw new Error('Generic write error');
+ });
+
+ const params = { file_path: filePath, content };
+ const result = await tool.execute(params, abortSignal);
+
+ expect(result.error?.type).toBe(ToolErrorType.FILE_WRITE_FAILURE);
+ expect(result.llmContent).toContain(
+ 'Error writing to file: Generic write error',
+ );
+ expect(result.returnDisplay).toContain('Generic write error');
+ });
+ });
});
diff --git a/packages/core/src/tools/write-file.ts b/packages/core/src/tools/write-file.ts
index 4a9f8d35..b018d653 100644
--- a/packages/core/src/tools/write-file.ts
+++ b/packages/core/src/tools/write-file.ts
@@ -17,6 +17,7 @@ import {
ToolCallConfirmationDetails,
Icon,
} from './tools.js';
+import { ToolErrorType } from './tool-error.js';
import { Type } from '@google/genai';
import { SchemaValidator } from '../utils/schemaValidator.js';
import { makeRelative, shortenPath } from '../utils/paths.js';
@@ -230,8 +231,12 @@ export class WriteFileTool
const validationError = this.validateToolParams(params);
if (validationError) {
return {
- llmContent: `Error: Invalid parameters provided. Reason: ${validationError}`,
- returnDisplay: `Error: ${validationError}`,
+ llmContent: `Could not write file due to invalid parameters: ${validationError}`,
+ returnDisplay: validationError,
+ error: {
+ message: validationError,
+ type: ToolErrorType.INVALID_TOOL_PARAMS,
+ },
};
}
@@ -243,10 +248,16 @@ export class WriteFileTool
if (correctedContentResult.error) {
const errDetails = correctedContentResult.error;
- const errorMsg = `Error checking existing file: ${errDetails.message}`;
+ const errorMsg = errDetails.code
+ ? `Error checking existing file '${params.file_path}': ${errDetails.message} (${errDetails.code})`
+ : `Error checking existing file: ${errDetails.message}`;
return {
- llmContent: `Error checking existing file ${params.file_path}: ${errDetails.message}`,
+ llmContent: errorMsg,
returnDisplay: errorMsg,
+ error: {
+ message: errorMsg,
+ type: ToolErrorType.FILE_WRITE_FAILURE,
+ },
};
}
@@ -344,10 +355,43 @@ export class WriteFileTool
returnDisplay: displayResult,
};
} catch (error) {
- const errorMsg = `Error writing to file: ${error instanceof Error ? error.message : String(error)}`;
+ // Capture detailed error information for debugging
+ let errorMsg: string;
+ let errorType = ToolErrorType.FILE_WRITE_FAILURE;
+
+ if (isNodeError(error)) {
+ // Handle specific Node.js errors with their error codes
+ errorMsg = `Error writing to file '${params.file_path}': ${error.message} (${error.code})`;
+
+ // Log specific error types for better debugging
+ if (error.code === 'EACCES') {
+ errorMsg = `Permission denied writing to file: ${params.file_path} (${error.code})`;
+ errorType = ToolErrorType.PERMISSION_DENIED;
+ } else if (error.code === 'ENOSPC') {
+ errorMsg = `No space left on device: ${params.file_path} (${error.code})`;
+ errorType = ToolErrorType.NO_SPACE_LEFT;
+ } else if (error.code === 'EISDIR') {
+ errorMsg = `Target is a directory, not a file: ${params.file_path} (${error.code})`;
+ errorType = ToolErrorType.TARGET_IS_DIRECTORY;
+ }
+
+ // Include stack trace in debug mode for better troubleshooting
+ if (this.config.getDebugMode() && error.stack) {
+ console.error('Write file error stack:', error.stack);
+ }
+ } else if (error instanceof Error) {
+ errorMsg = `Error writing to file: ${error.message}`;
+ } else {
+ errorMsg = `Error writing to file: ${String(error)}`;
+ }
+
return {
- llmContent: `Error writing to file ${params.file_path}: ${errorMsg}`,
- returnDisplay: `Error: ${errorMsg}`,
+ llmContent: errorMsg,
+ returnDisplay: errorMsg,
+ error: {
+ message: errorMsg,
+ type: errorType,
+ },
};
}
}
diff --git a/packages/core/src/utils/fileUtils.ts b/packages/core/src/utils/fileUtils.ts
index 30ab69c6..92186e4f 100644
--- a/packages/core/src/utils/fileUtils.ts
+++ b/packages/core/src/utils/fileUtils.ts
@@ -195,10 +195,18 @@ export async function detectFileType(
return 'text';
}
+export enum FileErrorType {
+ FILE_NOT_FOUND = 'FILE_NOT_FOUND',
+ IS_DIRECTORY = 'IS_DIRECTORY',
+ FILE_TOO_LARGE = 'FILE_TOO_LARGE',
+ READ_ERROR = 'READ_ERROR',
+}
+
export interface ProcessedFileReadResult {
llmContent: PartUnion; // string for text, Part for image/pdf/unreadable binary
returnDisplay: string;
error?: string; // Optional error message for the LLM if file processing failed
+ errorType?: FileErrorType; // Structured error type using enum
isTruncated?: boolean; // For text files, indicates if content was truncated
originalLineCount?: number; // For text files
linesShown?: [number, number]; // For text files [startLine, endLine] (1-based for display)
@@ -225,6 +233,7 @@ export async function processSingleFileContent(
llmContent: '',
returnDisplay: 'File not found.',
error: `File not found: ${filePath}`,
+ errorType: FileErrorType.FILE_NOT_FOUND,
};
}
const stats = await fs.promises.stat(filePath);
@@ -233,6 +242,7 @@ export async function processSingleFileContent(
llmContent: '',
returnDisplay: 'Path is a directory.',
error: `Path is a directory, not a file: ${filePath}`,
+ errorType: FileErrorType.IS_DIRECTORY,
};
}