Class: Tilt::KnitrTemplate

Inherits:
Template
  • Object
show all
Defined in:
lib/tilt-knitr.rb

Overview

knitr template github.com/yihui/knitr

Instance Method Summary collapse

Instance Method Details

#evaluate(scope, locals, &block) ⇒ Object 



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# File 'lib/tilt-knitr.rb', line 19

def evaluate(scope, locals, &block)
        fig_path = @fig_path
        if locals.has_key? "fig.path"
            fig_path = locals["fig.path"]
        end
        stdin, stdout, stderr = Open3.popen3('R --vanilla --slave -e "library(knitr);opts_chunk\$set(fig.path=\"'+fig_path+'\");data=readLines(file(\'stdin\'));out=knit(text=data,output=NULL);cat(\'KNITR<<<<<<<<<<<\n\');cat(out)"')
        if !block.nil?
            raise "Knitr Templates do not support inner blocks!"
        end
        #, locals.merge(scope.is_a?(Hash) ? scope : {}).merge({:yield => block.nil? ? '' : block.call}))
        stdin.write(data)
        stdin.write("\n")
        stdin.close
        $stderr.print stderr.readlines.join
        stdout.readlines.join.sub(/.*KNITR<<<<<<<<<<</m,"").strip
end

#initialize_engine ⇒ Object 



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# File 'lib/tilt-knitr.rb', line 9

def initialize_engine; 
        stdin, stdout, stderr = Open3.popen3('R --vanilla --slave -e "library(knitr)"')
       err = stderr.readlines.join
        if ! err.empty?
            raise LoadError, err
        end
end

#prepare ⇒ Object 



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# File 'lib/tilt-knitr.rb', line 17

def prepare; end