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# encoding: utf-8
# - Name: SiSU
#
#   - Description: documents, structuring, processing, publishing, search
#     se
#
#   - Author: Ralph Amissah
#     <ralph.amissah@gmail.com>
#
#   - Copyright: (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
#     2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2019,
#     2020, 2021, Ralph Amissah,
#     All Rights Reserved.
#
#   - License: GPL 3 or later:
#
#     SiSU, a framework for document structuring, publishing and search
#
#     Copyright (C) Ralph Amissah
#
#     This program is free software: you can redistribute it and/or modify it
#     under the terms of the GNU General Public License as published by the Free
#     Software Foundation, either version 3 of the License, or (at your option)
#     any later version.
#
#     This program is distributed in the hope that it will be useful, but WITHOUT
#     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
#     FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
#     more details.
#
#     You should have received a copy of the GNU General Public License along with
#     this program. If not, see <http://www.gnu.org/licenses/>.
#
#     If you have Internet connection, the latest version of the GPL should be
#     available at these locations:
#     <http://www.fsf.org/licensing/licenses/gpl.html>
#     <http://www.gnu.org/licenses/gpl.html>
#
#     <http://www.sisudoc.org/sisu/en/manifest/gpl.fsf.html>
#
#   - SiSU uses:
#     - Standard SiSU markup syntax,
#     - Standard SiSU meta-markup syntax, and the
#     - Standard SiSU object citation numbering and system
#
#   - Homepages:
#     <http://www.sisudoc.org>
#
#   - Git
#     <https://git.sisudoc.org/projects/>
#     <https://git.sisudoc.org/projects/?p=software/sisu.git;a=summary>
#     <https://git.sisudoc.org/projects/?p=markup/sisu-markup-samples.git;a=summary>
module SiSU_Load
  require_relative 'constants'                             # constants.rb
  require_relative 'utils'                                 # utils.rb
  class Load
    def initialize(prog,mandatory=false)
      @prog,@mandatory=prog,mandatory
    end
    def prog
      load_prog=false
      $:.each do |reqpath|
        if FileTest.exist?("#{reqpath}/#{@prog}.rb")
          load_prog=true
          #SiSU_Utils::CodeMarker.new(__LINE__,__FILE__,:fuchsia).ok("#{reqpath}/#{@prog}.rb loaded")
          break
        #else SiSU_Utils::CodeMarker.new(__LINE__,__FILE__,:fuchsia).warn("#{reqpath}/#{@prog}.rb not found")
        end
      end
      if load_prog \
      and @prog=~/dbi/
        begin
          require 'dbi'
        rescue LoadError
          SiSU_Utils::CodeMarker.new(__LINE__,__FILE__,:fuchsia).
            error('dbi NOT FOUND (LoadError)')
        end
      end
      if load_prog
        begin
          require @prog
        rescue LoadError
          SiSU_Utils::CodeMarker.new(__LINE__,__FILE__,:fuchsia).
            error("#{@prog} NOT FOUND (LoadError)")
        end
      else
        @mandatory \
        ? (SiSU_Screen::Ansi.new(@prog,"*WARN* module required: #{@prog}").warn)
        : '' #(SiSU_Screen::Ansi.new(@prog,"*WARN* #{@prog} load requested").warn)
      end
      load_prog
    end
    def prog?
      load_prog=false
      $:.each do |reqpath|
        if FileTest.exist?("#{reqpath}/#{@prog}.rb"); load_prog=true
          break
        end
      end
      load_prog
    end
  end
end
__END__