Add freecad package (#5718)

packages/freecad.rb

+require 'package'
+
+class Freecad < Package
+  description 'A free and opensource multiplatform 3D parametric modeler.'
+  homepage 'https://www.freecadweb.org/'
+  version '0.19.2'
+  license 'GPL-2'
+  compatibility 'x86_64'
+  source_url 'https://github.com/FreeCAD/FreeCAD/releases/download/0.19.2/FreeCAD_0.19-24291-Linux-Conda_glibc2.12-x86_64.AppImage'
+  source_sha256 'c196a6e59349ed452cc9b9af2c6a0d983a698831630aa5c7077565ed8570c9ad'
+
+  binary_url ({
+  })
+  binary_sha256 ({
+  })
+
+  depends_on 'sommelier'
+
+  def self.preflight
+    free_space = `echo $(($(stat -f --format="%a*%S" .)))`.chomp.to_i
+    abort 'Not enough free disk space.  You need at least 5.2 GB to install.'.lightred if free_space < 5583457485
+  end
+
+  def self.patch
+    system "sed -i 's,LD_LIBRARY_PATH=\${HERE}/usr/lib,LD_LIBRARY_PATH=\${HERE}/usr/lib:\${LD_LIBRARY_PATH},' AppRun"
+  end
+
+  def self.build
+    @freecad = <<~EOF
+    #!/bin/bash
+    cd #{CREW_PREFIX}/share/freecad
+    ./AppRun "$@"
+    EOF
+    IO.write('freecad.sh', @freecad)
+  end
+
+  def self.install
+    FileUtils.mkdir_p "#{CREW_DEST_PREFIX}/bin"
+    FileUtils.mkdir_p "#{CREW_DEST_PREFIX}/share/freecad"
+    FileUtils.install 'freecad.sh', "#{CREW_DEST_PREFIX}/bin/freecad", mode: 0755
+    FileUtils.mv Dir.glob('*'), "#{CREW_DEST_PREFIX}/share/freecad"
+  end
+
+  def self.postinstall
+    puts "\nType 'freecad' to get started.\n".lightblue
+  end
+
+  def self.remove
+    config_dir = "#{HOME}/.FreeCAD"
+    if Dir.exist? "#{config_dir}"
+      print "\nWould you like to remove #{config_dir}? [y/N] "
+      case $stdin.getc
+      when 'y', 'Y'
+        FileUtils.rm_rf "#{config_dir}"
+        puts "#{config_dir} removed.".lightred
+      else
+        puts "#{config_dir} saved.".lightgreen
+      end
+    end
+  end
+end