Daktilo: a Go package that uses a C-FFI to Typst

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hi there,

I’ve just tagged daktilo@v0.3.1:

It’s a Go package that uses a Cgo package wrapping a simple-minded FFI around a couple of Typst crates, mostly statically compiled.

package daktilo_test

import (
	"bytes"
	"fmt"
	"log"
	"strings"

	"codeberg.org/sbinet/daktilo"
)

func ExampleCompilePDF() {
	dst := new(bytes.Buffer)
	err := daktilo.CompilePDF(dst, strings.NewReader(`#set document(
  date: datetime(year:2009,month:11,day:10), // for reproducibility
  author: "daktilo",
)

#set page(width: 200pt, height: 300pt)
#set text(font: "New Computer Modern", weight: 450)

#show raw: set text(font: "New Computer Modern Mono", weight: 450)

= H1
== H2
=== H3

Hell·o from *Typ·st* and _Go_.

$ sum_(k=1)^n k = (n(n+1)) / 2 $

List:
- item a
- item b

Enumeration:
+ item a
+ item b

*Bye.*
`))
	if err != nil {
		log.Fatal(err)
	}

	fmt.Printf("PDF: %d bytes.\n", len(dst.Bytes()))

	// Output:
	// PDF: 16694 bytes.
}

I plan to expand a bit the exported Rust-FFI to allow producing PNGs and SVGs, taking fonts from the system and better error reporting (right now, the error is exposed to Go as a dumb string).

I am a very new Rust programmer so the plans above may not come to fruition just about now :slight_smile:
(also, if you have constructive criticism about my Rust style, I’ll gladly consider it)

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