claude_rust_tools/infrastructure/
file_write_tool.rs

1use claude_rust_errors::{AppError, AppResult};
2use claude_rust_types::{PermissionLevel, Tool};
3use serde_json::{Value, json};
4
5pub struct FileWriteTool;
6
7#[async_trait::async_trait]
8impl Tool for FileWriteTool {
9    fn name(&self) -> &str {
10        "file_write"
11    }
12
13    fn description(&self) -> &str {
14        "Write content to a file, creating parent directories as needed."
15    }
16
17    fn input_schema(&self) -> Value {
18        json!({
19            "type": "object",
20            "properties": {
21                "file_path": {
22                    "type": "string",
23                    "description": "Absolute path to the file to write"
24                },
25                "content": {
26                    "type": "string",
27                    "description": "The content to write to the file"
28                }
29            },
30            "required": ["file_path", "content"]
31        })
32    }
33
34    fn permission_level(&self) -> PermissionLevel {
35        PermissionLevel::Dangerous
36    }
37
38    async fn execute(&self, input: Value) -> AppResult<String> {
39        let path = input
40            .get("file_path")
41            .and_then(|v| v.as_str())
42            .ok_or_else(|| AppError::Tool("missing 'file_path' field".into()))?;
43
44        let content = input
45            .get("content")
46            .and_then(|v| v.as_str())
47            .ok_or_else(|| AppError::Tool("missing 'content' field".into()))?;
48
49        tracing::info!(path, "writing file");
50
51        let file_path = std::path::Path::new(path);
52        if let Some(parent) = file_path.parent() {
53            tokio::fs::create_dir_all(parent)
54                .await
55                .map_err(|e| AppError::Tool(format!("cannot create directories for '{path}': {e}")))?;
56        }
57
58        tokio::fs::write(path, content)
59            .await
60            .map_err(|e| AppError::Tool(format!("cannot write '{path}': {e}")))?;
61
62        let line_count = content.lines().count();
63        Ok(format!("Wrote {line_count} lines to {path}"))
64    }
65}
claude_rust_tools/infrastructure/file_write_tool.rs

claude_rust_tools/infrastructure/
file_write_tool.rs
