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use handlebars::{Context, Handlebars, Helper, Output, RenderContext, RenderError};
pub fn theme_option(
h: &Helper<'_, '_>,
_r: &Handlebars<'_>,
ctx: &Context,
rc: &mut RenderContext<'_, '_>,
out: &mut dyn Output,
) -> Result<(), RenderError> {
trace!("theme_option (handlebars helper)");
let param = h.param(0).and_then(|v| v.value().as_str()).ok_or_else(|| {
RenderError::new("Param 0 with String type is required for theme_option helper.")
})?;
let default_theme = rc.evaluate(ctx, "@root/default_theme")?;
let default_theme_name = default_theme
.as_json()
.as_str()
.ok_or_else(|| RenderError::new("Type error for `default_theme`, string expected"))?;
out.write(param)?;
if param.to_lowercase() == default_theme_name.to_lowercase() {
out.write(" (default)")?;
}
Ok(())
}
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