Module: Dewasm::Pozeiden

Defined in:
lib/dewasm/pozeiden.rb,
lib/dewasm/pozeiden/version.rb,
lib/dewasm/pozeiden/wasm_module.rb

Overview

Mermaid diagram rendering by the pozeiden renderer, compiled to WebAssembly and converted to Ruby by dewasm.

Defined Under Namespace

Classes: Error, RenderResult, WasmModule

Constant Summary collapse

MAX_INPUT_BYTES =

The input buffer compiled into the WebAssembly module, which is also pozeiden's own max_input_bytes default.

4 * 1024 * 1024
VERSION = 
"0.1.0"
POZEIDEN_VERSION =

The pozeiden revision this gem's WebAssembly module was built from.

"0.4.1 (071fbbb85fb73a06994c163c6093123bd3ac11f6)"

Class Method Summary collapse

Class Method Details

.detect_diagram_type(text) ⇒ Object

Unrecognised input is :unknown.



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# File 'lib/dewasm/pozeiden.rb', line 65

def detect_diagram_type(text)
  instance, = call("detect", text, nil, random: Random)
  read_text(instance, "meta_diagram_type").to_sym
end

.render(text, strict: false, max_width: 0, max_height: 0, scale: 1.0, theme_override: {}, random: Random) ⇒ Object

The SVG is self-contained.



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# File 'lib/dewasm/pozeiden.rb', line 30

def render(
  text,
  strict: false,
  max_width: 0,
  max_height: 0,
  scale: 1.0,
  theme_override: {},
  random: Random
)
  options = options_json(strict:, max_width:, max_height:, scale:, theme_override:)
  instance, length = call("render", text, options, random:)
  read_output(instance, length)
end

.render_with_metadata(text, strict: false, max_width: 0, max_height: 0, scale: 1.0, theme_override: {}, random: Random) ⇒ Object

The metadata is the diagram type and the accessibility title and description pozeiden extracted from the source.



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# File 'lib/dewasm/pozeiden.rb', line 45

def render_with_metadata(
  text,
  strict: false,
  max_width: 0,
  max_height: 0,
  scale: 1.0,
  theme_override: {},
  random: Random
)
  options = options_json(strict:, max_width:, max_height:, scale:, theme_override:)
  instance, length = call("render_with_metadata", text, options, random:)
  RenderResult.new(
    svg: read_output(instance, length),
    diagram_type: read_text(instance, "meta_diagram_type").to_sym,
    title: presence(read_text(instance, "meta_title")),
    descr: presence(read_text(instance, "meta_descr"))
  )
end