chromebrew/packages/git.rb

require 'buildsystems/cmake'

class Git < CMake
  description 'Git is a free and open source distributed version control system designed to handle everything from small to very large projects with speed and efficiency.'
  homepage 'https://git-scm.com/'
  version '2.46.0-1' # Do not use @_ver here, it will break the installer.
  license 'GPL-2'
  compatibility 'all'
  source_url "https://mirrors.edge.kernel.org/pub/software/scm/git/git-#{version.split('-').first}.tar.xz"
  source_sha256 '7f123462a28b7ca3ebe2607485f7168554c2b10dfc155c7ec46300666ac27f95'
  binary_compression 'tar.zst'

  binary_sha256({
    aarch64: 'a75eae1e96d4a9319e284afc682b7b68b50ec060e9ab518785df3c2a6ded5410',
     armv7l: 'a75eae1e96d4a9319e284afc682b7b68b50ec060e9ab518785df3c2a6ded5410',
       i686: '19e86f61ad78449fb1df678067ad38716430dd58767c953f2a3bac0cf632cc8a',
     x86_64: 'fa26980dce128e72383fadbe3b0feedd6969e93f9cc1e9d461cc31ddf8ca9bcd'
  })

  depends_on 'ca_certificates' => :build
  depends_on 'curl' # R
  depends_on 'expat' # R
  depends_on 'glibc' # R
  depends_on 'libunistring' # R
  depends_on 'pcre2' # R
  depends_on 'zlib' # R

  print_source_bashrc
  cmake_build_relative_dir 'contrib/buildsystems'
  cmake_options '-DUSE_VCPKG=FALSE'

  def self.patch
    # Patch to prevent error function conflict with libidn2
    # By replacing all calls to error with git_error.
    system "sed -i 's,^#undef error$,#undef git_error,' usage.c"
    sedcmd = 's/\([[:blank:]]\)error(/\1git_error(/'.dump
    system "grep -rl '[[:space:]]error(' . | xargs sed -i #{sedcmd}"
    sedcmd2 = 's/\([[:blank:]]\)error (/\1git_error (/'.dump
    system "grep -rl '[[:space:]]error (' . | xargs sed -i #{sedcmd2}"
    system "grep -rl ' !!error(' . | xargs sed -i 's/ !!error(/ !!git_error(/g'"
    system "sed -i 's/#define git_error(...) (error(__VA_ARGS__), const_error())/#define git_error(...) (git_error(__VA_ARGS__), const_error())/' git-compat-util.h"
    # CMake patches.
    # Avoid undefined reference to `trace2_collect_process_info' &  `obstack_free'
    system "sed -i 's,compat_SOURCES unix-socket.c unix-stream-server.c,compat_SOURCES unix-socket.c unix-stream-server.c compat/linux/procinfo.c compat/obstack.c,g' contrib/buildsystems/CMakeLists.txt"
    # The VCPKG optout in this CmakeLists.txt file is quite broken.
    system "sed -i 's/set(USE_VCPKG/#set(USE_VCPKG/g' contrib/buildsystems/CMakeLists.txt"
    system "sed -i 's,set(PERL_PATH /usr/bin/perl),set(PERL_PATH #{CREW_PREFIX}/bin/perl),g' contrib/buildsystems/CMakeLists.txt"
    system "sed -i 's,#!/usr/bin,#!#{CREW_PREFIX}/bin,g' contrib/buildsystems/CMakeLists.txt"
    # Without the following DESTDIR doesn't work.
    system "sed -i 's,${CMAKE_INSTALL_PREFIX}/bin/git,${CMAKE_BINARY_DIR}/git,g' contrib/buildsystems/CMakeLists.txt"
    system "sed -i 's,${CMAKE_INSTALL_PREFIX}/bin/git,\\\\$ENV{DESTDIR}${CMAKE_INSTALL_PREFIX}/bin/git,g' contrib/buildsystems/CMakeLists.txt"
    system "sed -i 's,${CMAKE_INSTALL_PREFIX},\\\\$ENV{DESTDIR}${CMAKE_INSTALL_PREFIX},g' contrib/buildsystems/CMakeLists.txt"
  end

  cmake_build_extras do
    git_env = <<~EOF

      GIT_PS1_SHOWDIRTYSTATE=yes
      GIT_PS1_SHOWSTASHSTATE=yes
      GIT_PS1_SHOWUNTRACKEDFILES=yes
      GIT_PS1_SHOWUPSTREAM=auto
      GIT_PS1_DESCRIBE_STYLE=default
      GIT_PS1_SHOWCOLORHINTS=yes

      # Add LIBC_VERSION and CHROMEOS_RELEASE_CHROME_MILESTONE set in
      # crew_profile_base to prompt if in a container.
      if [[ -e /.dockerenv ]] && [ -n "${LIBC_VERSION+1}" ] && [ -n "${CHROMEOS_RELEASE_CHROME_MILESTONE+1}" ]; then
        PS1='\\[\\033[1;34m\\]\\u@\\H:$LIBC_VERSION M$CHROMEOS_RELEASE_CHROME_MILESTONE \\[\\033[1;33m\\]\\w \\[\\033[1;31m\\]$(__git_ps1 "(%s)")\\[\\033[0m\\]\\$ '
      else
        PS1='\\[\\033[1;34m\\]\\u@\\H \\[\\033[1;33m\\]\\w \\[\\033[1;31m\\]$(__git_ps1 "(%s)")\\[\\033[0m\\]\\$ '
      fi
    EOF
    File.write('contrib/completion/git-prompt.sh', git_env, mode: 'a')
  end

  cmake_install_extras do
    FileUtils.mkdir_p "#{CREW_DEST_PREFIX}/share/git-completion"
    FileUtils.cp_r Dir.glob('contrib/completion/.'), "#{CREW_DEST_PREFIX}/share/git-completion/"

    File.write 'git_bashd_env', <<~GIT_BASHD_EOF
      # git bash completion
      source #{CREW_PREFIX}/share/git-completion/git-completion.bash
    GIT_BASHD_EOF
    FileUtils.install 'git_bashd_env', "#{CREW_DEST_PREFIX}/etc/bash.d/git", mode: 0o644
    FileUtils.install 'contrib/completion/git-prompt.sh', "#{CREW_DEST_PREFIX}/etc/bash.d/git-prompt.sh", mode: 0o644
  end

  def self.check
    # Check to see if linking libcurl worked, which means
    # git-remote-https should exist
    unless File.symlink?("#{CREW_DEST_PREFIX}/libexec/git-core/git-remote-https") ||
           File.exist?("#{CREW_DEST_PREFIX}/libexec/git-core/git-remote-https")
      abort 'git-remote-https is broken'.lightred
    end
  end

  def self.postinstall
    ExitMessage.add "\ncd /path/to/git/repo and you should see the branch displayed in the prompt.\n".lightblue
    return unless File.directory?("#{CREW_PREFIX}/lib/crew/.git")

    puts 'Running git garbage collection...'.lightblue
    system 'git gc', chdir: CREW_LIB_PATH, exception: false
  end
end