@@ -16,25 +16,21 @@ # ruby blob.rb retrieve a.rb # => dumps a.rb to stdout # -$: << "../lib" -$: << "../ext" require 'rubygems' -require 'arrayfields' require 'amalgalite' - +VALID_ACTIONS = %w[ list retrieve store ] def usage - STDERR.puts "Usage: #{File.basename($0)} ( store | retrieve ) file(s)" + STDERR.puts "Usage: #{File.basename($0)} ( #{VALID_ACTIONS.join(' | ')} ) file(s)" exit 1 end # # This does the basic command line parsing # -usage if ARGV.size < 2 +usage if ARGV.size < 1 action = ARGV.shift -usage unless %w[ store retrieve ].include? action +usage unless VALID_ACTIONS.include? action file_list = ARGV -usage unless file_list.size > 0 # # create the database if it doesn't exist @@ -55,6 +51,14 @@ end case action # + # list all the files that are stored in the database + # +when 'list' + db.execute("SELECT path FROM files") do |row| + puts row['path'] + end + + # # if we are doing the store action, then loop over the files and store them in # the database. This will use incremental IO to store the files directly from # the file names. @@ -67,6 +71,7 @@ case action # prepared statement. # when 'store' + usage if file_list.empty? db.transaction do |db_in_trans| db_in_trans.prepare("INSERT INTO files(path, data) VALUES( $path, $data )") do |stmt| file_list.each do |file_path| @@ -91,6 +96,7 @@ when 'store' # positional sql varible binding using the '?' syntax. # when 'retrieve' + usage if file_list.empty? db.execute("SELECT id, path, data FROM files WHERE path = ?", file_list.first) do |row| STDERR.puts "Dumping #{row['path']} to stdout" row['data'].write_to_io( STDOUT ) examples/blob.rb fa72067f59136bb92f3d333da91f1273f934afee Jeremy Hinegardner jeremy@hinegardner.org http://github.com/copiousfreetime/amalgalite/commit/af4db9b72c6142cd22c8b299c6b015c18fe3e6aa af4db9b72c6142cd22c8b299c6b015c18fe3e6aa 2008-07-04T13:30:40-07:00 2008-07-04T13:30:40-07:00 added 'list' command to blob example program 4214af4b392943b65eccf6bbb3f34cf4cceb9e5d Jeremy Hinegardner jeremy@hinegardner.org