Class: Greenmat::Markdown

Inherits:
Object
  • Object
show all
Defined in:
lib/greenmat.rb,
ext/greenmat/gm_markdown.c

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#renderer ⇒ Object (readonly)

Returns the value of attribute renderer.



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# File 'lib/greenmat.rb', line 7

def renderer
  @renderer
end

Class Method Details

.new(*args) ⇒ Object 



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# File 'ext/greenmat/gm_markdown.c', line 96

static VALUE rb_greenmat_md__new(int argc, VALUE *argv, VALUE klass)
{
	VALUE rb_markdown, rb_rndr, hash, rndr_options;
	unsigned int extensions = 0;

	struct rb_greenmat_rndr *rndr;
	struct sd_markdown *markdown;

	if (rb_scan_args(argc, argv, "11", &rb_rndr, &hash) == 2)
		rb_greenmat_md_flags(hash, &extensions);

	if (rb_obj_is_kind_of(rb_rndr, rb_cClass))
		rb_rndr = rb_funcall(rb_rndr, rb_intern("new"), 0);

	if (!rb_obj_is_kind_of(rb_rndr, rb_cRenderBase))
		rb_raise(rb_eTypeError, "Invalid Renderer instance given");

	/**
	 * Automatically enable the `fenced_code_blocks` option if
	 * given a kind of `HTML_TOC` object since many languages
	 * like Ruby use the sharp to comment code so these comments
	 * would be processed as titles.
	 */
	if (rb_obj_is_kind_of(rb_rndr, rb_cRenderHTML_TOC))
		extensions |= MKDEXT_FENCED_CODE;

	Data_Get_Struct(rb_rndr, struct rb_greenmat_rndr, rndr);

	/* Merge the current options in the @options hash */
	if (hash != Qnil) {
		rndr_options = rb_funcall(rb_iv_get(rb_rndr, "@options"), rb_intern("merge"), 1, hash);
		rb_iv_set(rb_rndr, "@options", rndr_options);
	}

	markdown = sd_markdown_new(extensions, MAX_NESTING, &rndr->callbacks, &rndr->options);
	if (!markdown)
		rb_raise(rb_eRuntimeError, "Failed to create new Renderer class");

	rb_markdown = Data_Wrap_Struct(klass, NULL, rb_greenmat_md__free, markdown);
	rb_iv_set(rb_markdown, "@renderer", rb_rndr);

	return rb_markdown;
}

Instance Method Details

#render(text) ⇒ Object 



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# File 'ext/greenmat/gm_markdown.c', line 140

static VALUE rb_greenmat_md_render(VALUE self, VALUE text)
{
	VALUE rb_rndr;
	struct buf *output_buf;
	struct sd_markdown *markdown;

	Check_Type(text, T_STRING);

	rb_rndr = rb_iv_get(self, "@renderer");
	Data_Get_Struct(self, struct sd_markdown, markdown);

	if (rb_respond_to(rb_rndr, rb_intern("preprocess")))
		text = rb_funcall(rb_rndr, rb_intern("preprocess"), 1, text);
	if (NIL_P(text))
		return Qnil;

#ifdef HAVE_RUBY_ENCODING_H
	{
		struct rb_greenmat_rndr *renderer;
		Data_Get_Struct(rb_rndr, struct rb_greenmat_rndr, renderer);
		renderer->options.active_enc = rb_enc_get(text);
	}
#endif

	/* initialize buffers */
	output_buf = bufnew(128);

	/* render the magic */
	sd_markdown_render(
		output_buf,
		(const uint8_t*)RSTRING_PTR(text),
		RSTRING_LEN(text),
		markdown);

	/* build the Ruby string */
	text = rb_enc_str_new((const char*)output_buf->data, output_buf->size, rb_enc_get(text));

	bufrelease(output_buf);

	if (rb_respond_to(rb_rndr, rb_intern("postprocess")))
		text = rb_funcall(rb_rndr, rb_intern("postprocess"), 1, text);

	return text;
}