kc3-lang/harfbuzz/src/rust/lib.rs

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• Hash : c25fddba
  Author :
  Date : 2025-05-05T15:50:16
  

  [harfruzz] Add basic harfRuzz shaper
  

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• src/rust/lib.rs

• mod hb;
  use hb::*;
  
  #[cfg(feature = "font")]
  mod font;
  #[cfg(feature = "shape")]
  mod shape;
  
  use std::alloc::{GlobalAlloc, Layout};
  use std::os::raw::c_void;
  
  struct MyAllocator;
  
  unsafe impl GlobalAlloc for MyAllocator {
      unsafe fn alloc(&self, layout: Layout) -> *mut u8 {
          assert!(layout.align() <= 2 * std::mem::size_of::<*mut u8>());
          hb_malloc(layout.size()) as *mut u8
      }
  
      unsafe fn alloc_zeroed(&self, layout: Layout) -> *mut u8 {
          assert!(layout.align() <= 2 * std::mem::size_of::<*mut u8>());
          hb_calloc(layout.size(), 1) as *mut u8
      }
  
      unsafe fn realloc(&self, ptr: *mut u8, layout: Layout, new_size: usize) -> *mut u8 {
          assert!(layout.align() <= 2 * std::mem::size_of::<*mut u8>());
          hb_realloc(ptr as *mut c_void, new_size) as *mut u8
      }
  
      unsafe fn dealloc(&self, ptr: *mut u8, layout: Layout) {
          assert!(layout.align() <= 2 * std::mem::size_of::<*mut u8>());
          hb_free(ptr as *mut c_void);
      }
  }
  
  #[global_allocator]
  static GLOBAL: MyAllocator = MyAllocator;
  

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