MathML Track – Connecting The Code
- August 10th, 2011
- By admin
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Greetings from #rdcHQ! This week in the MathML Track, we made a big step towards finalizing how our equations will be integrated into the Title 24 documents. Jasper wrote a Ruby script that will solve that piece of the puzzle by creating a wrapper around each equation as outlined earlier in the program. This code will ultimately be published in github during our documentation phase.
Our draft code is below … More news as it develops! (We also have more equations to add to the repository … stay tuned!)
grem.rb (draft)
Note: We are still working out details on how to gracefully degrade to the generated SVG, and in the absence of an SVG, the original JPG image.
name = ARGV.shift #get individual filenames from helper.rb
# grem.rb: grep for MathML
# Jasper Shumaker-Pruitt
# extracts MathML from html files
# see helper.rb for instructions
File.open(name, "w") do |writefile| #open a new file of the same name
writefile.puts '<span class="display">
<span id="equation-item[n]" class="formula">
<span class="label">
[EQUATION IDENTIFIER]
</span>
<span class="math">' #write some html to that file
current_state = 0
while line = gets #iterate through the lines from original file
if line.index("<math") #look for an opening math tag
current_state = 1
end
if current_state > 0 #write the content from opening to closing math tags
writefile.puts line
end
if line.index("</math") #quit writing when closing tag is found
current_state -= 1
end
end
writefile.puts '
</span>
</span>
</span>' #write the rest of the html wrapper
end
helper.rb (draft)
Note: This code could be repurposed to convert an entire directory of xml/mml/html documents to svg with SVGMath.
#helper.rb
#Jasper Shumaker-Pruitt
#usage:
#1) create new destination directory
#2)into the command line type: ruby helper.rb SourceDir DestinationDir
# i.e. ruby helper.rb /home/foo/sourcedir /home/foo/destinationdir for a #computer named foo
origin = ARGV.shift #retrieve and store user input for source and destination
destin = ARGV.shift #directories
fileNameArray=`ls #{origin}`.split #create an array of filenames in source dir
fileNameArray.each do |htmlFile| #iterate through array
if !(htmlFile.index("~"))#ignore html backup files
system("ruby grem.rb #{destin}/#{htmlFile} < #{origin}/#{htmlFile}")
#execute grem for each file
end
end
The Scalable Vector Graphic format that we are using is moving this document set into the modern era. It is not difficult to spot the difference in quality between the original art we are working from and the resolution-independent vector files we are producing (you can view two examples 
Suffusion/WordPress navigational goodness by 
Our resident videographer, 
