Typst-as-lib, use of table with input data

help
1

Hi,

I would like to use Typst in my rust project.
I discover this crate : GitHub - Relacibo/typst-as-lib: Easily use typst from rust.
It lets the possibilities to use typst directly in rust code.

  1. I just take the sample.
  2. Add more data in content.
  3. And I try to generate a table with the input data.

I read documentation and try a lot to use table...
Is my typst template so bad or maybe this feature is not availble with the crate ?

Have you ever parameter a table in Typst ?

// main.rs

use derive_typst_intoval::{IntoDict, IntoValue};
use std::fs;
use typst::foundations::{Bytes, Dict, IntoValue};
use typst_as_lib::TypstEngine;

static TEMPLATE_FILE: &str = include_str!("./templates/template.typ");
//static FONT: &[u8] = include_bytes!("./fonts/texgyrecursor-regular.ttf");
static OUTPUT: &str = "./examples/output.pdf";
//static IMAGE: &[u8] = include_bytes!("./templates/images/typst.png");

fn main() {
    // Read in fonts and the main source file.
    // We can use this template more than once, if needed (Possibly
    // with different input each time).
    let template = TypstEngine::builder()
        .main_file(TEMPLATE_FILE)
       // .fonts([FONT])
        .build();

    // Run it
    let doc = template
        .compile_with_input(dummy_data())
        .output
        .expect("typst::compile() returned an error!");

    // Create pdf
    let options = Default::default();
    let pdf = typst_pdf::pdf(&doc, &options).expect("Could not generate pdf.");
    fs::write(OUTPUT, pdf).expect("Could not write pdf.");
}

// Some dummy content. We use `derive_typst_intoval` to easily
// create `Dict`s from structs by deriving `IntoDict`;
fn dummy_data() -> Content {
    Content {
        v: vec![
            ContentElement {
                heading: "Foo".to_owned(),
                text: Some("Hello World!".to_owned()),
                num1: 1,
                num2: Some(42),
              //  image: Some(Bytes::new(IMAGE.to_vec())),
            },
            ContentElement {
                heading: "Bar".to_owned(),
                num1: 2,
                ..Default::default()
            },
             ContentElement {
                heading: "Bar".to_owned(),
                num1: 2,
                ..Default::default()
            },
             ContentElement {
                heading: "Bar".to_owned(),
                num1: 2,
                ..Default::default()
            },
             ContentElement {
                heading: "Bar".to_owned(),
                num1: 2,
                ..Default::default()
            },
             ContentElement {
                heading: "Bar".to_owned(),
                num1: 2,
                ..Default::default()
            },
             ContentElement {
                heading: "Bar".to_owned(),
                num1: 2,
                ..Default::default()
            },
             ContentElement {
                heading: "Bar".to_owned(),
                num1: 2,
                ..Default::default()
            },
             ContentElement {
                heading: "Bar".to_owned(),
                num1: 2,
                ..Default::default()
            },
        ],
    }
}

#[derive(Debug, Clone, IntoValue, IntoDict)]
struct Content {
    v: Vec<ContentElement>,
}

// Implement Into<Dict> manually, so we can just pass the struct
// to the compile function.
impl From<Content> for Dict {
    fn from(value: Content) -> Self {
        value.into_dict()
    }
}

#[derive(Debug, Clone, Default, IntoValue, IntoDict)]
struct ContentElement {
    heading: String,
    text: Option<String>,
    num1: i32,
    num2: Option<i32>,
   // image: Option<Bytes>,
}

// template.typ

#import sys: inputs

#set page(paper: "a4", flipped: true)

#let content = inputs.v

#table (
  columns : 5,
#for (i, elem) in content.enumerate() {
  [#elem.heading],
  [Text: #elem.text],
  [Num1: #elem.num1],
  [Num2: #elem.num2],
  #if elem.image != none [#image.decode(elem.image, height: 40pt)],
}
)
2

This forum is for general rust-related questions. For questions around using a library, you would be better off asking elsewhere. For example, the typst project has a dedicated section for their community.

3

Ok. I will do that.
Thank you.