Struct Content 

pub struct Content {
    pub type_name: String,
    pub text: Option<String>,
    pub image_url: Option<String>,
}

Represents different types of content that can be included in a message.

Content can be either text or images, supporting multi-modal interactions with OpenAI models. Images can be provided as URLs or loaded from local files and are automatically encoded as base64 data URLs.

Supported Image Formats

• PNG
• JPEG/JPG
• GIF

Fields

• type_name - The type of content (“input_text” or “input_image”)
• text - Optional text content
• image_url - Optional image URL or base64 data URL

Examples

use openai_tools::common::message::Content;

// Create text content
let text_content = Content::from_text("Hello, world!");

// Create image content from URL
let image_content = Content::from_image_url("https://example.com/image.png");

// Create image content from local file
let file_content = Content::from_image_file("path/to/image.png");

Fields

type_name: String

The type of content (“input_text” or “input_image”)

text: Option<String>

Optional text content

image_url: Option<String>

Optional image URL or base64 data URL

Implementations

impl Content

pub fn from_text<T: AsRef<str>>(text: T) -> Self

Creates a new Content instance with text content.

Arguments

• text - The text content to include

Returns

A new Content instance with type “input_text”

Examples

use openai_tools::common::message::Content;

let content = Content::from_text("Hello, world!");
assert_eq!(content.type_name, "input_text");

pub fn from_image_url<T: AsRef<str>>(image_url: T) -> Self

Creates a new Content instance with an image URL.

Arguments

• image_url - The URL of the image

Returns

A new Content instance with type “input_image”

Examples

use openai_tools::common::message::Content;

let content = Content::from_image_url("https://example.com/image.png");
assert_eq!(content.type_name, "input_image");

pub fn from_image_file<T: AsRef<str>>(file_path: T) -> Self

Creates a new Content instance from a local image file.

This method reads an image file from the filesystem, encodes it as base64, and creates a data URL suitable for use with OpenAI APIs.

Arguments

• file_path - Path to the image file

Returns

A new Content instance with type “input_image” and base64-encoded image data

Panics

Panics if:

• The file cannot be opened
• The image cannot be decoded
• The image format is unsupported
• The image cannot be encoded to the buffer

Supported Formats

• PNG
• JPEG/JPG
• GIF

Examples

use openai_tools::common::message::Content;

let content = Content::from_image_file("path/to/image.png");
assert_eq!(content.type_name, "input_image");

Trait Implementations

impl Clone for Content

fn clone(&self) -> Content

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Content

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Content

fn default() -> Content

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Content

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for Content

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.