Add tinycore package (#2678)

* Add tinycore package

* Remove unnecessary backslashes

packages/tinycore.rb

+require 'package'
+
+class Tinycore < Package
+  description 'TinyCore Linux is a distro based on loop-device mounted programs, like Snaps.
+          This is a wrapper script to be able to execute their .tcz files.'
+  homepage 'https://distro.ibiblio.org/tinycorelinux/'
+  version '9.0'
+  case ARCH
+  when 'armv7l', 'aarch64'
+    source_url 'https://distro.ibiblio.org/tinycorelinux/9.x/armv7/tcz/bash.tcz'
+    source_sha256 '8f67e85cad963dd859086429f4a31cdd79b89ae0d84379018085dfbb62d0d3a7'
+  when 'i686'
+    source_url 'https://distro.ibiblio.org/tinycorelinux/9.x/x86/tcz/bash.tcz'
+    source_sha256 '53fd575388ccfee58b4a4fdc43263e73c263b612f3bae67e22dafa5da4f61530'
+  when 'x86_64'
+    source_url 'https://distro.ibiblio.org/tinycorelinux/9.x/x86_64/tcz/bash.tcz'
+    source_sha256 'cbc2f97c8b8dada90ec3cf99b328ec73c1b0fa9cc2cb594d273fd7b118610d49'
+  end
+
+  binary_url ({
+  })
+  binary_sha256 ({
+  })
+
+  def self.build
+    case ARCH
+    when 'x86_64'
+      system "echo '#!/bin/bash
+
+set -e
+
+export PKG=`echo $\{1%%.*\}`
+export BIN=`echo $1|sed \"s/^[^\.]*\.//\"`
+export OPT=`shift; echo $@`
+
+[ -d #{CREW_PREFIX}/share/tinycore/$PKG ] || { echo Package $PKG not found. && exit 1; }
+[ -e #{CREW_PREFIX}/share/tinycore/$PKG/usr/local/bin/$BIN ] || { echo Program $BIN not found. && exit 1; }
+if file #{CREW_PREFIX}/share/tinycore/$PKG/usr/local/bin/$BIN | grep \"text executable\" &>/dev/null; then
+  LD_LIBRARY_PATH=$LD_LIBRARY_PATH:#{CREW_PREFIX}/share/tinycore/$PKG/usr/local/lib #{CREW_PREFIX}/share/tinycore/$PKG/usr/local/bin/$BIN $OPT
+else
+  LD_LIBRARY_PATH=$LD_LIBRARY_PATH:#{CREW_PREFIX}/share/tinycore/$PKG/usr/local/lib /#{ARCH_LIB}/ld-linux-x86-64.so.2 #{CREW_PREFIX}/share/tinycore/$PKG/usr/local/bin/$BIN $OPT
+fi
+' > tinycore" 
+    else
+    system "echo '#!/bin/bash
+
+set -e
+
+export PKG=`echo $\{1%%.*\}`
+export BIN=`echo $1|sed \"s/^[^\.]*\.//\"`
+export OPT=`shift; echo $@`
+
+[ -d #{CREW_PREFIX}/share/tinycore/$PKG ] || { echo Package $PKG not found. && exit 1; }
+[ -e #{CREW_PREFIX}/share/tinycore/$PKG/usr/local/bin/$BIN ] || { echo Program $BIN not found. && exit 1; }
+LD_LIBRARY_PATH=$LD_LIBRARY_PATH:#{CREW_PREFIX}/share/tinycore/$PKG/usr/local/lib #{CREW_PREFIX}/share/tinycore/$PKG/usr/local/bin/$BIN $OPT
+' > tinycore"
+    end
+    system "chmod a+x tinycore"
+    system "cp ../bash.tcz ."
+  end
+
+  def self.install
+    FileUtils.mkdir_p "#{CREW_DEST_PREFIX}/share/tinycore/examples"
+    FileUtils.mkdir_p "#{CREW_DEST_PREFIX}/share/tinycore/bash"
+    FileUtils.mkdir_p "#{CREW_DEST_PREFIX}/bin"
+    system "cp -pa tinycore #{CREW_DEST_PREFIX}/bin/"
+    system "cp -pa bash.tcz #{CREW_DEST_PREFIX}/share/tinycore/examples/"
+  end
+
+  def self.postinstall
+    puts
+    puts "Examples are located at #{CREW_PREFIX}/share/tinycore/examples/".lightblue
+    puts "To try TinyCore Bash, please execute:".lightblue
+    puts "sudo mount -o loop #{CREW_PREFIX}/share/tinycore/examples/bash.tcz #{CREW_PREFIX}/share/tinycore/bash/".lightblue
+    puts "tinycore bash".lightblue
+    puts "sudo umount #{CREW_PREFIX}/share/tinycore/bash/".lightblue
+    puts
+    puts "The executable names are in the format of Snap executable names.".lightblue
+    puts "For eample, to execute the 'bashbug' program in the TinyCore 'bash' package, please execute:".lightblue
+    puts "tinycore bash.bashbug".lightblue
+    puts
+    puts "To run a binary that has a dot in its name, such as 'ld.gold', use the full name:".lightblue
+    puts "tinycore binutils.ld.gold".lightblue
+    puts
+  end
+end