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use anyhow::{Context, Result};
use rocksmap::RocksMap;
use std::io::{self, Write};
use std::path::Path;
use crate::OutputFormat;
/// Interactive shell command
pub fn shell_command(db_path: &Path, _format: &OutputFormat) -> Result<()> {
println!("RocksMap Interactive Shell");
println!("=========================");
println!("Database: {:?}", db_path);
println!("Type 'help' for available commands, 'exit' to quit.\n");
let db = RocksMap::<String, String>::open(db_path).context("Failed to open database")?;
loop {
print!("rocksmap> ");
io::stdout().flush()?;
let mut input = String::new();
io::stdin().read_line(&mut input)?;
let input = input.trim();
if input.is_empty() {
continue;
}
let parts: Vec<&str> = input.split_whitespace().collect();
if parts.is_empty() {
continue;
}
match parts[0].to_lowercase().as_str() {
"help" => show_help(),
"exit" | "quit" => {
println!("Goodbye!");
break;
}
"put" => {
if parts.len() >= 3 {
let key = parts[1];
let value = parts[2..].join(" ");
match db.put(key.to_string(), &value) {
Ok(_) => println!("✓ Stored '{}' = '{}'", key, value),
Err(e) => println!("✗ Error: {}", e),
}
} else {
println!("Usage: put <key> <value>");
}
}
"get" => {
if parts.len() >= 2 {
let key = parts[1];
match db.get(&key.to_string()) {
Ok(Some(value)) => println!("'{}' = '{}'", key, value),
Ok(None) => println!("Key '{}' not found", key),
Err(e) => println!("✗ Error: {}", e),
}
} else {
println!("Usage: get <key>");
}
}
"delete" | "del" => {
if parts.len() >= 2 {
let key = parts[1];
match db.delete(&key.to_string()) {
Ok(_) => println!("✓ Deleted key '{}'", key),
Err(e) => println!("✗ Error: {}", e),
}
} else {
println!("Usage: delete <key>");
}
}
"list" => {
let limit = if parts.len() >= 2 {
parts[1].parse().unwrap_or(10)
} else {
10
};
match db.iter() {
Ok(iterator) => {
let mut count = 0;
println!("{:<20} | {}", "Key", "Value");
println!("{:-<20}-+-{:-<40}", "", "");
for result in iterator {
if count >= limit {
break;
}
match result {
Ok((key, value)) => {
let truncated_value = if value.len() > 40 {
format!("{}...", &value[..37])
} else {
value
};
println!("{:<20} | {}", key, truncated_value);
count += 1;
}
Err(e) => {
println!("✗ Error reading entry: {}", e);
break;
}
}
}
if count == 0 {
println!("No entries found");
} else {
println!(
"\nShowing {} entries (use 'list <number>' to show more)",
count
);
}
}
Err(e) => println!("✗ Error creating iterator: {}", e),
}
}
"scan" => {
if parts.len() >= 3 {
let from = parts[1];
let to = parts[2];
match db.range(&from.to_string(), &to.to_string()) {
Ok(iterator) => {
let mut count = 0;
println!("Range scan [{}, {}]:", from, to);
println!("{:<20} | {}", "Key", "Value");
println!("{:-<20}-+-{:-<40}", "", "");
for result in iterator {
match result {
Ok((key, value)) => {
let truncated_value = if value.len() > 40 {
format!("{}...", &value[..37])
} else {
value
};
println!("{:<20} | {}", key, truncated_value);
count += 1;
}
Err(e) => {
println!("✗ Error reading entry: {}", e);
break;
}
}
}
if count == 0 {
println!("No entries found in range");
} else {
println!("\nFound {} entries in range", count);
}
}
Err(e) => println!("✗ Error creating range iterator: {}", e),
}
} else {
println!("Usage: scan <from_key> <to_key>");
}
}
"prefix" => {
if parts.len() >= 2 {
let prefix = parts[1];
match db.prefix_scan(&prefix.to_string()) {
Ok(iterator) => {
let mut count = 0;
println!("Prefix scan for '{}':", prefix);
println!("{:<20} | {}", "Key", "Value");
println!("{:-<20}-+-{:-<40}", "", "");
for result in iterator {
match result {
Ok((key, value)) => {
let truncated_value = if value.len() > 40 {
format!("{}...", &value[..37])
} else {
value
};
println!("{:<20} | {}", key, truncated_value);
count += 1;
}
Err(e) => {
println!("✗ Error reading entry: {}", e);
break;
}
}
}
if count == 0 {
println!("No entries found with prefix '{}'", prefix);
} else {
println!("\nFound {} entries with prefix", count);
}
}
Err(e) => println!("✗ Error creating prefix iterator: {}", e),
}
} else {
println!("Usage: prefix <prefix>");
}
}
"count" => match db.iter() {
Ok(iterator) => {
let mut count = 0;
for result in iterator {
match result {
Ok(_) => count += 1,
Err(e) => {
println!("✗ Error counting entries: {}", e);
return Ok(());
}
}
}
println!("Total entries: {}", count);
}
Err(e) => println!("✗ Error creating iterator: {}", e),
},
"clear" => {
print!("Are you sure you want to delete ALL entries? (yes/no): ");
io::stdout().flush()?;
let mut confirmation = String::new();
io::stdin().read_line(&mut confirmation)?;
if confirmation.trim().to_lowercase() == "yes" {
match db.iter() {
Ok(iterator) => {
let keys: Result<Vec<_>, _> =
iterator.map(|result| result.map(|(key, _)| key)).collect();
match keys {
Ok(keys) => {
let mut deleted = 0;
for key in keys {
match db.delete(&key) {
Ok(_) => deleted += 1,
Err(e) => {
println!("✗ Error deleting key '{}': {}", key, e)
}
}
}
println!("✓ Deleted {} entries", deleted);
}
Err(e) => println!("✗ Error reading keys: {}", e),
}
}
Err(e) => println!("✗ Error creating iterator: {}", e),
}
} else {
println!("Operation cancelled");
}
}
_ => {
println!(
"Unknown command: '{}'. Type 'help' for available commands.",
parts[0]
);
}
}
}
Ok(())
}
fn show_help() {
println!("Available commands:");
println!(" help - Show this help message");
println!(" put <key> <value> - Store a key-value pair");
println!(" get <key> - Retrieve value for a key");
println!(" delete <key> - Delete a key");
println!(" list [limit] - List entries (default limit: 10)");
println!(" scan <from> <to> - Scan range of keys [from, to]");
println!(" prefix <prefix> - Find keys starting with prefix");
println!(" count - Count total number of entries");
println!(" clear - Delete all entries (with confirmation)");
println!(" exit - Exit the shell");
println!();
}