fast_h2m 0.4.2

High-performance HTML to Markdown converter
Documentation 
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//! Media element handlers for fast_h2m conversion.
//!
//! This module provides specialized handling for various media elements:
//! - **Image**: img tags with inline data URI and metadata collection
//! - **Graphic**: Custom graphic elements with multiple source attributes
//! - **SVG**: SVG and MathML elements with serialization and base64 encoding
//! - **Embedded**: iframe, video, audio, and source elements

pub mod embedded;
pub mod graphic;
pub mod image;
pub mod svg;

// Re-export types from parent module for submodule access
pub use super::{Context, DomContext};

#[cfg(feature = "inline-images")]
pub use image::handle_inline_data_image;

/// Dispatches media element handling to the appropriate handler.
///
/// This function routes media-related HTML elements to their specialized handlers
/// based on tag name. It is designed to be called from the main `walk_node`
/// function in `converter.rs`.
///
/// # Routing Table
///
/// The following tag routes are supported:
///
/// | Tag(s) | Handler | Description |
/// |--------|---------|-------------|
/// | `iframe` | embedded | Embedded content frames |
/// | `video` | embedded | Video elements |
/// | `audio` | embedded | Audio elements |
/// | `picture` | embedded | Responsive image containers |
/// | `graphic` | graphic | Publishing-format graphic elements |
/// | `svg` | svg | SVG image elements |
/// | `math` | svg | MathML elements |
///
/// # Return Value
///
/// Returns `true` if the tag was recognized and handled, `false` otherwise.
pub fn dispatch_media_handler(
    tag_name: &str,
    node_handle: &tl::NodeHandle,
    parser: &crate::tl_types::Parser,
    output: &mut String,
    options: &crate::options::ConversionOptions,
    ctx: &super::Context,
    depth: usize,
    dom_ctx: &super::DomContext,
) -> bool {
    let Some(node) = node_handle.get(parser) else {
        return false;
    };
    let tag = match node {
        tl::Node::Tag(tag) => tag,
        _ => return false,
    };

    match tag_name {
        "iframe" => {
            embedded::handle_iframe(node_handle, tag, output, ctx, depth, dom_ctx, parser);
            true
        }
        "video" => {
            embedded::handle_video(
                node_handle,
                tag,
                parser,
                output,
                options,
                ctx,
                depth,
                dom_ctx,
            );
            true
        }
        "audio" => {
            embedded::handle_audio(
                node_handle,
                tag,
                parser,
                output,
                options,
                ctx,
                depth,
                dom_ctx,
            );
            true
        }
        "picture" => {
            embedded::handle_picture(
                node_handle,
                tag,
                parser,
                output,
                options,
                ctx,
                depth,
                dom_ctx,
            );
            true
        }
        "graphic" => {
            graphic::handle_graphic(
                node_handle,
                tag,
                parser,
                output,
                options,
                ctx,
                depth,
                dom_ctx,
            );
            true
        }
        "svg" => {
            svg::handle_svg(
                node_handle,
                tag,
                parser,
                output,
                options,
                ctx,
                depth,
                dom_ctx,
            );
            true
        }
        "math" => {
            svg::handle_math(
                node_handle,
                tag,
                parser,
                output,
                options,
                ctx,
                depth,
                dom_ctx,
            );
            true
        }
        _ => false,
    }
}