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rustybuzz - An incremental harfbuzz port to Rust

rustybuzz rustybuzz is an attempt to incrementally port harfbuzz to Rust. But while harfbuzz does a lot of things (shaping, subsetting, font querying,
Information
Category: Rust / Graphics
Watchers: 16
Star: 350
Fork: 19
Last update: Mar 13, 2023
Resource links
https://github.com/RazrFalcon/rustybuzz

rustybuzz

Build Status

rustybuzz is an attempt to incrementally port harfbuzz to Rust. But while harfbuzz does a lot of things (shaping, subsetting, font querying, etc.), rustybuzz is strictly an OpenType shaper.

You can use it already, since we are simply linking the harfbuzz statically. And we're testing rustybuzz against the harfbuzz's test suite.

Embedded harfbuzz version: 2.6.4

Changes

  • Subsetting is out of scope and removed.
  • Malformed font is an error now. harfbuzz accepts malformed fonts, but doesn't do shaping in this case.
  • harfbuzz configured to not depend on system libraries, like glib, coretext, freetype, icu. So it relies only on internal implementations.

Notes about the port

Thanks to Cargo, rustybuzz is pretty modular, unlike harfbuzz, which is basically a monolith. harfbuzz itself can be roughly split into those modules: shaping, subsetting, font parsing, Unicode functions, containers and utilities. rustybuzz implements only the shaping. Font parsing is handled by the ttf-parser, which is not based on harfbuzz and has its own architecture. Unicode functions also handled by external crates. And most of the containers and utilities were already implemented in the Rust std.

License

rustybuzz is licensed under the MIT.

harfbuzz is licensed under the Old MIT

20 Open More issues
Closed

Write unicode-combining-class crate

https://unicode.org/reports/tr44/#Canonical_Combining_Class_Values

help wanted 
opened Jan 12, 2020 by RazrFalcon 1
Closed

Write unicode-bidi-mirroring-glyph crate

https://unicode.org/reports/tr44/#BidiMirroring.txt

http://www.unicode.org/Public/UNIDATA/BidiMirroring.txt ?

help wanted 
opened Jan 13, 2020 by RazrFalcon 1
Closed

minor fix HarfBuzz spelling

Sorry that this contribution is this small, hadn't chance to find a time to contribute more here (which really wanted to) and to include this minor thing with the other changes. Thanks :)

opened Feb 18, 2020 by ebraminio 1
Open

Font::from_ptr causes segfaults due to faulty transmute 

    pub(crate) fn from_ptr(font: *const ffi::hb_font_t) -> &'static Font<'static> {
        unsafe { &*(font as *const Font) }
    }

This straight up transmutes a hb_font_t into a Font. However hb_font_t is not a Font, it's stored as a pointer in a Font. This causes a segfault here:

fn font_has_glyph(font: &Font, u: u32) -> bool {
    font.ttf_parser().glyph_index(char::try_from(u).unwrap()).is_some()
}

where it then tries to access the ttf_parser() from the font, which doesn't exist, as it's not a Font, but a transmuted hb_font_t

opened Apr 4, 2020 by CryZe 1
Open

Find state machine generator

HarfBuzz uses Ragel, but it doesn't support Rust.

opened Feb 14, 2020 by RazrFalcon 2

Contents

    EagleW Code for PaperRobot: Incremental Draft Generation of Scientific Ideas
    xyutao Official repository for Few-Shot Class-Incremental Learning (FSCIL)
    skeeto Incremental SipHash in C
    vascoferreira25 SuperMemo inspired incremental reading for org-mode and Anki
    abdulrahmanabdulazeez Port-Fin(port finder) is a tool which scans for open and closed port on a website/host. This tool scans the state of the well known/common ports.
    adapton adapton - programming abstractions for general-purpose incremental computations
    ilai-deutel kibi — A tiny (≤1024 LOC) text editor with syntax highlighting, incremental search and more.
    adapton nightly fungi-lang - Fungi: A typed, functional language for programs that name their cached dependency graphs
    Rich-Harris Utilities for dealing with ports in Node apps
    praetorian-inc PortBender is a TCP port redirection utility that allows a red team operator to redirect inbound traffic destined for one TCP port
    sindresorhus Get an available TCP port
    rmm5t :muscle::ballot_box_with_check: A jQuery plugin that turns regular select boxes into Quicksilver-like, flex-matching, incremental-finding controls.
    deplinenoise Tundra is a code build system that tries to be accurate and fast for incremental builds
    simeji json incremental digger
    grailbio A language and runtime for distributed, incremental data processing in the cloud
    haya14busa incremental search improved - successor of incsearch.vim
    burtonator Polar is a personal knowledge repository for PDF and web content supporting incremental reading and document annotation.
    Mojang A set of utilities designed for incremental building, merging and optimization of data transformations.
    kopia Cross-platform backup tool for Windows, macOS & Linux with fast, incremental backups, client-side end-to-end encryption, compression and data deduplication. CLI and GUI included.
    yaoyao-liu PyTorch implementation of "Mnemonics Training: Multi-Class Incremental Learning without Forgetting" (CVPR2020 Oral)
    remorses Storybook alternative with incremental building and zero config
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