Module: VinaryTree::Liblevenshtein::Native

Extended by:
Fiddle::Importer
Defined in:
lib/vinary_tree/liblevenshtein/native.rb

Constant Summary collapse

VtResource = 
struct ["void* context", "void* vtable"]
Match = 
struct [
  "void* term_data", "size_t term_len", "size_t byte_len",
  "size_t distance", "uint64_t id", "uint32_t unit_domain",
  "uint8_t has_id", "uint8_t reserved[3]"
]
Batch = 
struct ["void* matches", "size_t len", "uint64_t generation"]
OwnedString = 
struct ["void* data", "size_t len"]

Class Method Summary collapse

Class Method Details

.library_candidates ⇒ Object 



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# File 'lib/vinary_tree/liblevenshtein/native.rb', line 9

def self.library_candidates
  explicit = ENV["LIBLEVENSHTEIN_LIBRARY"]
  os, extension, filename = case RbConfig::CONFIG["host_os"]
                            when /darwin/ then ["darwin", "dylib", "libliblevenshtein.dylib"]
                            when /mswin|mingw/ then ["windows", "dll", "liblevenshtein.dll"]
                            else ["linux", "so", "libliblevenshtein.so"]
                            end
  cpu = case RbConfig::CONFIG["host_cpu"]
        when /x86_64|amd64/ then "x64"
        when /aarch64|arm64/ then "arm64"
        else RbConfig::CONFIG["host_cpu"]
        end
  platform = "#{os}-#{cpu}"
  bundled = File.expand_path("native/#{platform}/#{filename}", __dir__)
  [explicit, bundled, filename, "liblevenshtein.#{extension}"].compact
end

.pointer_output ⇒ Object 



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# File 'lib/vinary_tree/liblevenshtein/native.rb', line 75

def pointer_output
  Fiddle::Pointer.malloc(Fiddle::SIZEOF_VOIDP, Fiddle::RUBY_FREE)
end

.read_pointer(output) ⇒ Object 



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# File 'lib/vinary_tree/liblevenshtein/native.rb', line 79

def read_pointer(output)
  output[0, Fiddle::SIZEOF_VOIDP].unpack1("J")
end

.read_size(output) ⇒ Object 



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# File 'lib/vinary_tree/liblevenshtein/native.rb', line 87

def read_size(output)
  output[0, Fiddle::SIZEOF_SIZE_T].unpack1("J")
end

.size_output ⇒ Object 



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# File 'lib/vinary_tree/liblevenshtein/native.rb', line 83

def size_output
  Fiddle::Pointer.malloc(Fiddle::SIZEOF_SIZE_T, Fiddle::RUBY_FREE)
end