Latexit CLI

latexit

#!/usr/bin/env ruby

WORK_DIR = ENV['HOME']+'/tmp/latexit/'
FILE_NAME = 'tmp'

eq = `pbpaste`.strip
if eq.size > 100
  puts 'Number of characters should be less than 100'
  exit 1
end
latex=<<EOF
\\documentclass[10pt]{article}
\\usepackage{amssymb}
\\usepackage{amsmath}
\\usepackage{bm}
\\usepackage[utf8]{inputenc}
\\pagestyle{empty}
\\begin{document}
\\begin{align*}#{eq}
\\end{align*}
\\end{document}
EOF
File.write(WORK_DIR+FILE_NAME+'.tex', latex)

print 'platex ... '
res = `cd #{WORK_DIR} && \
platex -file-line-error -interaction nonstopmode #{FILE_NAME}.tex 2>&1`
unless $?.exitstatus == 0
  puts 'failed'
  puts res
  exit 1
else
  puts 'finished'
end
print 'dvipdfmx ... '
`cd #{WORK_DIR} && \
dvipdfmx #{FILE_NAME}.dvi`
unless $?.exitstatus == 0
  puts 'failed'
  exit 1
else
  puts 'finished'
end
print 'pdfcrop ... '
`cd #{WORK_DIR} && \
pdfcrop #{FILE_NAME}.pdf`
unless $?.exitstatus == 0
  puts 'failed'
  exit 1
else
  puts 'finished'
end

`cd #{WORK_DIR} && \
convert -density 400 -colorspace RGB #{FILE_NAME}-crop.pdf out.png && \
impbcopy out.png`