Input TeX textfile or zip archive and output pdf file

texify.rb

#!/usr/bin/env ruby

$files = STDIN.read

randir = (0...31).map { (65 + rand(26)).chr }.join

class String
def black;          "\e[30m#{self}\e[0m" end
def red;            "\e[31m#{self}\e[0m" end
def green;          "\e[32m#{self}\e[0m" end
def brown;          "\e[33m#{self}\e[0m" end
def blue;           "\e[34m#{self}\e[0m" end
def magenta;        "\e[35m#{self}\e[0m" end
def cyan;           "\e[36m#{self}\e[0m" end
def gray;           "\e[37m#{self}\e[0m" end

def bg_black;       "\e[40m#{self}\e[0m" end
def bg_red;         "\e[41m#{self}\e[0m" end
def bg_green;       "\e[42m#{self}\e[0m" end
def bg_brown;       "\e[43m#{self}\e[0m" end
def bg_blue;        "\e[44m#{self}\e[0m" end
def bg_magenta;     "\e[45m#{self}\e[0m" end
def bg_cyan;        "\e[46m#{self}\e[0m" end
def bg_gray;        "\e[47m#{self}\e[0m" end

def bold;           "\e[1m#{self}\e[22m" end
def italic;         "\e[3m#{self}\e[23m" end
def underline;      "\e[4m#{self}\e[24m" end
def blink;          "\e[5m#{self}\e[25m" end
def reverse_color;  "\e[7m#{self}\e[27m" end
end

# temp directory
$DIR = "/tmp/texify_#{randir}"
`mkdir #{$DIR}`


IO.popen(["file", "-"], "r+") do |pipe|
  pipe.write $files
  pipe.close_write
  $type = pipe.read
end

def tex
    File.open("#{$DIR}/main.tex", "w") do |file|
        file.write($files)
    end
    IO.popen([
        "pdflatex",
        "-aux-directory=#{$DIR}", 
        "-output-directory=#{$DIR}", 
        "#{$DIR}/main.tex"]) do |pipe|
        STDERR.puts "pdf LaTeX log file".cyan
        STDERR.puts pipe.read
    end
    $OUT = "#{$DIR}/main.pdf"
end

def zip
    File.open("#{$DIR}/archive.zip", "w") do |file|
        file.write($files)
    end
    `mkdir #{$DIR}/archive`
    IO.popen(["unzip", "#{$DIR}/archive.zip", "-d", "#{$DIR}/archive"]) do |pipe|
        STDERR.puts "unzip log file".cyan
        STDERR.puts pipe.read
    end
    x = ""
    d = ""
    Dir.foreach("#{$DIR}/archive") do |entry|
        if entry =~ /\.tex$/
            x = entry
        end
        if File::directory?("#{$DIR}/archive/#{entry}")
            if (entry =~ /^[_\.]/) == nil
                d = entry
            end
        end
    end
    
    if x != ""
        IO.popen([
            "pdflatex",
            "-aux-directory=#{$DIR}/archive", 
            "-output-directory=#{$DIR}/archive", 
            "#{$DIR}/archive/#{x}"]) do |pipe|
            STDERR.puts "pdf LaTeX log file".cyan
            STDERR.puts pipe.read
        end
        $OUT = "#{$DIR}/archive/#{x.gsub(/\.tex$/, '.pdf')}"
    elsif d != ""
        Dir.foreach("#{$DIR}/archive/#{d}") do |entry|
            if entry =~ /\.tex$/
                x = entry
            end
        end
        if x != ""
            IO.popen([
                "pdflatex",
                "-aux-directory=#{$DIR}/archive/#{d}", 
                "-output-directory=#{$DIR}/archive/#{d}", 
                "#{$DIR}/archive/#{d}/#{x}"]) do |pipe|
                STDERR.puts "pdf LaTeX log file".cyan
                STDERR.puts pipe.read
            end
            $OUT = "#{$DIR}/archive/#{d}/#{x.gsub(/\.tex$/, '.pdf')}"
        else
            STDERR.puts "ERR no tex file".bg_red 
        end
    else
        STDERR.puts "ERR no tex file".bg_red 
    end
end

if $type =~ /Zip archive data/
    STDERR.puts 'ZIP mode'.green
    zip
else
    # tex source file
    STDERR.puts 'TEX mode'.green
    tex
end

File.open($OUT, "r") do |file|
    puts file.read
end

# clear temp files
`rm -rf #{$DIR}`