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#! /usr/bin/env ruby
# -*- coding: UTF-8 -*-
#----------------------------------------------------------------------------
#
# File : dia2pg.rb
# Author : Jérémy Zurcher <jeremy@asynk.ch>
# Date : 24/08/10
# License :
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#
#----------------------------------------------------------------------------
#
require 'ostruct'
require 'optparse'
#
class OpenStruct
def to_h; @table end
end
#
options = OpenStruct.new
#
options.verbose = false
options.input = nil
options.database = nil
options.indent=4
#
opts = OptionParser.new do |opts|
opts.banner = "Usage: #{$0} [options]"
opts.on( "-i", "--input FILENAME", "input file" ) { |n| options.input = n }
opts.on( "-V", "--verbose", "produce verbose output" ) { options.verbose = true }
opts.on( "-d", "--database DATABASE", "set default database" ) { |n| options.database = n }
opts.on( "-n", "--indent N", "set number of indentation spaces" ) { |n| options.indent = n.to_i }
end
#
options.tbl_prefix+='_' if not options.tbl_prefix.nil? and options.tbl_prefix[-1]!='_'
#
opts.parse!(ARGV)
#
if options.input.nil?
$stderr << "missing input file argument\n"
exit 1
end
#
INDENT="\n"+" "*options.indent
#
class Table
#
def initialize n, t, a, d
@name = n
@tbl_prefix = t
@attr_prefix = a
@db = d
@ids = []
@bools = []
@floats = []
@integers = []
@texts = []
@times = []
end
attr_reader :ids, :bools, :floats, :integers, :texts, :times
#
def name
(@tbl_prefix.nil? ? @name : @name[@tbl_prefix.length..-1]).capitalize # TODO replace _(.) by $1.capitalize
end
#
def to_s
r="class #{name}"
r << INDENT+'#'
r << INDENT+'include Hmsa_lib::PgsqlModel'
r << INDENT+'#'
r << INDENT+"db '#{@db}'.freeze" unless @db.nil?
r << INDENT+"prefix '#{@attr_prefix}'.freeze" unless @attr_prefix.nil?
r << INDENT+'#' unless @db.nil? and @attr_prefix.nil?
r << INDENT+"ids " + @ids.collect { |i| ":#{i}" }.join(', ') unless @ids.empty?
[ :bools, :floats, :integers, :texts, :times].each do |sym|
attrs = send sym
next if attrs.empty?
r << INDENT+"#{sym} " + attrs.collect { |a| ":#{@attr_prefix.nil? ? a : a[@attr_prefix.length..-1]}" }.join(', ')
end
r << INDENT+'#'
r << INDENT+'sql_stmts( {'
r << INDENT+" # :exists => [ 'select count(*) from #{@name} where #{@ids[0]}=$1::int', :#{@ids[0]} ]," unless @ids.empty?
r << INDENT+'} )'
r << INDENT+'#'
r << "\nend"
end
end
#
TABLES=[]
#
tbl=nil
tbl_prefix=nil
attr_prefix=nil
File.open(options.input).readlines.each do |l|
# puts l
if l=~/dia2pg/
l.split.each do |s|
k,v = s.split '='
if k=~/tbl_prefix/
tbl_prefix=v
elsif k=~/attr_prefix/
attr_prefix=v
end
end
elsif l=~/CREATE TABLE (\S+)/
tbl = Table.new $1, tbl_prefix, attr_prefix, options.database
tbl_prefix=nil
attr_prefix=nil
TABLES << tbl
elsif l=~/PRIMARY\s+KEY\s+\((\w*)\)/
$1.split(/,/).reverse.each do |i|
tbl.ids.insert 0, i
end
elsif l=~/(\w+)\s+integer\s+REFERENCES/
tbl.ids << $1
elsif l=~/(\w+)\s+boolean/
tbl.bools << $1
elsif l=~/(\w+)\s+double/
tbl.floats << $1
elsif l=~/(\w+)\s+integer/
tbl.integers << $1
elsif l=~/(\w+)\s+text/
tbl.texts << $1
elsif l=~/(\w+)\s+char/
tbl.texts << $1
elsif l=~/(\w+)\s+timestamp/
tbl.times << $1
end
end
#
TABLES.each do |t|
puts "#"
puts t
end
|
