Rust

Get a Related Item as Text

Demonstrates the Chilkat Email.GetRelatedString method, which returns the text of a related item (with CR line-endings), interpreting the item's bytes using the supplied charset. It is intended for text-based related items such as style sheets. The first argument is the zero-based related-item index and the second is the charset. This example reads an embedded CSS style sheet as text.

Background: Not every related item is a binary image — some are text, like a CSS style sheet embedded so the HTML renders consistently offline. For those, GetRelatedString decodes the bytes back to characters using the charset you specify (typically utf-8). For binary related items such as images, read the raw data via the BinData-based accessor instead. This variant normalizes line endings to bare CR; use GetRelatedStringCrLf when you need CRLF.

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// Demonstrates the GetRelatedString method, which returns the text of a related item (with
// CR line-endings), interpreting the bytes using the specified charset.  This is intended
// for text-based related items such as style sheets.  The index is zero-based.

let email = chilkat::Email::new();
email.set_subject("GetRelatedString example");

// The HTML references a related style sheet by name (Content-Location).
email.set_html_body("<html><head><link rel=\"stylesheet\" href=\"styles.css\"/></head><body>Styled.</body></html>");

// Add the related style sheet (index 0).
email.add_related_string2("styles.css", "body { color: navy; }", "utf-8");

// Get the first related item (index 0) as text, interpreting the bytes as utf-8.
let content = email.get_related_string(0, "utf-8").unwrap_or_default();
println!("Related item 0 text: {}", content);