Rust

Keeping Query Params in a Hashtable

Demonstrates how to use a Chilkat Hashtable to hold query params and re-emit as a query param string.

Note: The ToQueryString method was added in Chilkat v9.5.0.92.

Rust

let ht = chilkat::Hashtable::new();

// Add name/value pairs from an existing query param string where the values are already URL encoded.
let mut qp = "txt=this%20is%20a%20test&color=blue&fruits=apples%26oranges".to_string();
let _ = ht.add_query_params(&qp).is_ok();

// Add some additional name/value pairs.
let _ = ht.add_str("name", "Jack Sparrow");
let _ = ht.add_str("movie", "Pirates of the Carribean");

// Iterate over the hash table to show what we have..

let keys = chilkat::StringTable::new();
let _ = ht.get_keys(&keys);
let num_keys = keys.count();
let mut key = String::new();
let mut val = String::new();
let mut i = 0;
while i < num_keys {
    key = keys.string_at(i).unwrap_or_default();
    val = ht.lookup_str(&key).unwrap_or_default();
    println!("{} = {}", key, val);
    i = i + 1;
}

// Output for the above loop:

// color = blue
// name = Jack Sparrow
// fruits = apples&oranges
// txt = this is a test
// movie = Pirates of the Carribean

// Get all name/value pairs as a query parm string with values URL encoded
qp = ht.to_query_string().unwrap_or_default();
println!("{}", qp);

// Result:
// color=blue&name=Jack%20Sparrow&fruits=apples%26oranges&txt=this%20is%20a%20test&movie=Pirates%20of%20the%20Carribean