Read IPTC Alt Text From An Image In Rust With xmp _ toolkit

rust

```cargo
[dependencies]
anyhow = "1.0.86"
xmp_toolkit = "1.7.3"
```

use anyhow::Result;
use std::path::PathBuf;
use xmp_toolkit::{xmp_ns, OpenFileOptions, XmpFile};

fn main() {
  let input = PathBuf::from("xmp-toolkit-al-text-test/photoshop-2024-iptc-alt-text.jpg");
  if let Ok(alt_text) = get_alt_text(input) {
    println!("{}", alt_text);
  }
}

fn get_alt_text(path: PathBuf) -> Result<String> {
  if let Ok(mut f) = XmpFile::new() {
    if let Ok(_) = f.open_file(
      path.clone(),
      OpenFileOptions::default().only_xmp().use_smart_handler(),
    )
    .or_else(|_err| {
        f.open_file(path, OpenFileOptions::default().use_packet_scanning())
    }) {
      if let Some(xmp) = f.xmp() {
        if let Some((value, _actual_lang)) =
          xmp.localized_text(xmp_ns::IPTC_CORE, "AltTextAccessibility", Some("en"), "en-US")
        {
          Ok(value.value)
        } else {
          Ok("TODO: Figure out how to make this an error".to_string())
        }
      } else {
        Ok("TODO: make this an error".to_string())
      }
    } else {
      Ok("TODO: make this an error".to_string())
    } 
  } else {
      Ok("TODO: make this an error".to_string())
  }
}

results start

The other field is :

rust

ExtDescrAccessibility

This is my first run at reading IPTC Alt Text and Extended Description metadata embedded in an image from Photoshop. I don't have a good grasp on error handling in rust yet. So, the code could use some help, but it gets the data.

Read IPTC Alt Text From An Image In Rust With xmp _ toolkit

Footnotes And References