Rust

Get a Mail-Merge Replacement String by Index

Demonstrates the Chilkat Email.GetReplaceString method, which returns the replacement string for the Nth previously-defined pattern/replacement pair (a mail-merge feature). The index is zero-based and corresponds to the same index used by GetReplacePattern. This example defines two pairs and prints each pattern with its replacement.

Background: Pairing GetReplacePattern (the token to find) with GetReplaceString (the text to substitute) at the same index lets you walk the full mail-merge table. Retrieving a replacement by its position is handy when enumerating all substitutions; to look one up by its pattern instead, use GetReplaceString2.

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Rust

// Demonstrates the GetReplaceString method, which returns the replacement string for the
// Nth previously-defined pattern/replacement pair (a mail-merge feature).  The index is
// zero-based and corresponds to the same index used by GetReplacePattern.

let email = chilkat::Email::new();
email.set_subject("Hello FIRST_NAME");
email.set_body("Dear FIRST_NAME, welcome to CITY.");

let _ = email.set_replace_pattern("FIRST_NAME", "John");
let _ = email.set_replace_pattern("CITY", "Denver");

let n = email.num_replace_patterns();
for i in 0..n {
    println!("{} -> {}", email.get_replace_pattern(i).unwrap_or_default(), email.get_replace_string(i).unwrap_or_default());
}