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# File 'lib/commands/dbdump.rb', line 15
def start
include_password = false
options = {}
OptionParser.new do |opt|
opt.banner = "Usage: dbdump [options] [environment]"
opt.on("-p", "--include-password", "Automatically provide the password from database.yml") do |v|
include_password = true
end
opt.parse!(ARGV)
abort opt.to_s unless (0..1).include?(ARGV.size)
end
env = ARGV.first || Rails.env
unless config = YAML::load(ERB.new(IO.read("#{@app.root}/config/database.yml")).result)[env]
abort "No database is configured for the environment '#{env}'"
end
def find_cmd(*commands)
dirs_on_path = ENV['PATH'].to_s.split(File::PATH_SEPARATOR)
commands += commands.map{|cmd| "#{cmd}.exe"} if RbConfig::CONFIG['host_os'] =~ /mswin|mingw/
full_path_command = nil
found = commands.detect do |cmd|
dir = dirs_on_path.detect do |path|
full_path_command = File.join(path, cmd)
File.executable? full_path_command
end
end
found ? full_path_command : abort("Couldn't find database client: #{commands.join(', ')}. Check your $PATH and try again.")
end
case config["adapter"]
when /^mysql/
args = {
'host' => '--host',
'port' => '--port',
'socket' => '--socket',
'username' => '--user',
'encoding' => '--default-character-set'
}.map { |opt, arg| "#{arg}=#{config[opt]}" if config[opt] }.compact
if config['password'] && include_password
args << "--password=#{config['password']}"
elsif config['password'] && !config['password'].to_s.empty?
args << "-p"
end
args << config['database']
exec(find_cmd('mysqldump', 'mysql5dump'), "--single-transaction", *args)
when "postgresql"
ENV['PGUSER'] = config["username"] if config["username"]
ENV['PGHOST'] = config["host"] if config["host"]
ENV['PGPORT'] = config["port"].to_s if config["port"]
ENV['PGPASSWORD'] = config["password"].to_s if config["password"] && include_password
args = {
'encoding' => '--encoding'
}.map { |opt, arg| "#{arg}=#{config[opt]}" if config[opt] }.compact
args << config["database"]
exec(find_cmd('pg_dump'), *args)
when "sqlite"
exec(find_cmd('sqlite'), config["database"], ".dump")
when "sqlite3"
args = []
args << "-#{options['mode']}" if options['mode']
args << "-header" if options['header']
args << config['database']
args << ".dump"
exec(find_cmd('sqlite3'), *args)
else
abort "Unknown command-line dump client for #{config['database']}. Submit a dbdump patch to add support!"
end
end
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