Class: Lolcommits::InstallationGit

Inherits:
Object
  • Object
show all
Defined in:
lib/lolcommits/backends/installation_git.rb

Overview

Methods to handle enabling and disabling of lolcommits

Constant Summary collapse

HOOK_PATH = 
File.join ".git", "hooks", "post-commit"
HOOK_DIR = 
File.join ".git", "hooks"

Class Method Summary collapse

Class Method Details

.do_disable ⇒ Object

IF –DISABLE, DO DISABLE



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# File 'lib/lolcommits/backends/installation_git.rb', line 46

def self.do_disable
  if lolcommits_hook_exists?
    remove_existing_hook!
    info "uninstalled lolcommits hook (from #{HOOK_PATH})"
  elsif File.exist?(HOOK_PATH)
    info "couldn't find an lolcommits hook (at #{HOOK_PATH})"
    if File.read(HOOK_PATH) =~ /lolcommit/
      info "warning: an older-style lolcommit hook may still exist, edit #{HOOK_PATH} to remove it manually"
    end
  else
    info "no post commit hook found (at #{HOOK_PATH}), so there is nothing to uninstall"
  end
end

.do_enable(capture_args = "") ⇒ Object

IF –ENABLE, DO ENABLE



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# File 'lib/lolcommits/backends/installation_git.rb', line 12

def self.do_enable(capture_args = "")
  # its possible a hooks dir doesnt exist, so create it if so
  Dir.mkdir(HOOK_DIR) unless File.directory?(HOOK_DIR)

  # should add a shebang (or not) adding will rewrite hook file
  add_shebang = false
  if hook_file_exists?
    # clear away any existing lolcommits hook
    remove_existing_hook! if lolcommits_hook_exists?

    # if file is empty we should add a shebang (and rewrite hook)
    if File.read(HOOK_PATH).strip.empty?
      add_shebang = true
    elsif !good_shebang?
      # look for good shebang in existing hook, abort if none found
      warn "the existing hook (at #{HOOK_PATH}) doesn't start with a good shebang; like #!/bin/sh"
      exit 1
    end
  else
    add_shebang = true
  end

  File.open(HOOK_PATH, add_shebang ? "w" : "a") do |f|
    f.write("#!/bin/sh\n") if add_shebang
    f.write(hook_script(capture_args))
  end

  FileUtils.chmod 0o755, HOOK_PATH
  HOOK_PATH
end

.good_shebang? ⇒ Boolean

does the git hook file have a good shebang?



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# File 'lib/lolcommits/backends/installation_git.rb', line 90

def self.good_shebang?
  File.read(HOOK_PATH).lines.first =~ %r{^\#!.*/bin/.*sh}
end

.hook_file_exists? ⇒ Boolean

does a git hook exist at all?



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# File 'lib/lolcommits/backends/installation_git.rb', line 79

def self.hook_file_exists?
  File.exist?(HOOK_PATH)
end

.hook_script(capture_args = "") ⇒ Object 



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# File 'lib/lolcommits/backends/installation_git.rb', line 60

def self.hook_script(capture_args = "")
  ruby_path     = Lolcommits::Platform.command_which("ruby", only_path: true)
  imagick_path  = Lolcommits::Platform.command_which("identify", only_path: true)
  capture_cmd   = "if [ ! -d \"$GIT_DIR/rebase-merge\" ] && [ \"$LOLCOMMITS_CAPTURE_DISABLED\" != \"true\" ]; then lolcommits --capture #{capture_args}; fi"
  exports       = "GIT_DIR=${GIT_DIR-`git rev-parse --git-dir`} && LANG=\"#{ENV.fetch('LANG', nil)}\" && PATH=\"$PATH:#{ruby_path}:#{imagick_path}\""

  if Lolcommits::Platform.platform_windows?
    exports = "set path=\"%PATH%;#{ruby_path};#{imagick_path}\""
  end

  <<-HOOK

### lolcommits hook (begin) ###
#{exports} && #{capture_cmd}
###  lolcommits hook (end)  ###
  HOOK
end

.lolcommits_hook_exists? ⇒ Boolean

does a git hook exist with lolcommits commands?



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# File 'lib/lolcommits/backends/installation_git.rb', line 84

def self.lolcommits_hook_exists?
  hook_file_exists? &&
    File.read(HOOK_PATH).to_s =~ /lolcommits.*\(begin\)(.*\n)*.*lolcommits.*\(end\)/
end

.remove_existing_hook! ⇒ Object 



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# File 'lib/lolcommits/backends/installation_git.rb', line 94

def self.remove_existing_hook!
  hook = File.read(HOOK_PATH)
  out  = File.open(HOOK_PATH, "w")
  skip = false

  hook.lines.each do |line|
    skip = true if !skip && (line =~ /lolcommits.*\(begin\)/)

    out << line unless skip

    skip = false if skip && (line =~ /lolcommits.*\(end\)/)
  end

  out.close
end