Class: ODDB::FiParse::FachinfoPDFWriter

Inherits:
Writer show all
Includes:
FachinfoWriterMethods, Rpdf2txt::DefaultHandler
Defined in:
ext/fiparse/src/fachinfo_pdf.rb

Constant Summary collapse

IMAGE_DIR = 
File.join(IMAGE_DIR, 'fachinfo')
@@skip_pattern = 
/documed|copyright|seite|page|[kc]ompendium/iu
@@hr_pattern = 
/-{5}\s*$/u

Instance Attribute Summary

Attributes inherited from Writer

#chapters, #iksnrs, #name

Instance Method Summary collapse

Methods included from FachinfoWriterMethods

#to_fachinfo

Methods inherited from Writer

#named_chapter, #named_chapters, #new_alignment, #next_chapter, #send_hor_rule, #send_literal_data, #set_target

Constructor Details

#initialize(*args) ⇒ FachinfoPDFWriter

Returns a new instance of FachinfoPDFWriter.



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# File 'ext/fiparse/src/fachinfo_pdf.rb', line 16

def initialize(*args)
	super
	@chars_since_last_linebreak = 0
	@tableheader_lineno = nil
end

Instance Method Details

#add_text ⇒ Object 



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# File 'ext/fiparse/src/fachinfo_pdf.rb', line 49

def add_text
     return unless(@font)
	if(@font.bold? && @font.italic?)
		heading = self.out.strip
		unless(heading.empty?)
			@chapter = next_chapter
			@chapter.heading = heading
			set_templates(@chapter)
			@section = @chapter.next_section
		end
	elsif(@font.bold?)
       if @chapter.nil?
         @name << self.out.strip
       elsif(@paragraph)
         @paragraph.set_format(:bold)
         @paragraph << self.out
         @paragraph.reduce_format(:bold)
       end
	elsif(@font.italic?)
		## special case: italic after company-name is the 
		## galenic_form-chapter of the pre AMZV-form of fi
		if(@chapter == @company)
			@chapter = next_chapter
			@section = @chapter.next_section
		end
		if(@fresh_paragraph || @preformatted)
         unless(self.out.empty?)
           @chapter ||= next_chapter
           @section = @chapter.next_section
           @section.subheading << self.out
           @paragraph = @section.next_paragraph
         end
			@wrote_section_heading = true
       elsif @paragraph
			@paragraph.set_format(:italic)
			@paragraph << self.out
			@paragraph.reduce_format(:italic)
       else
         warn "ignoring \"#{self.out}\""
		end
       if @paragraph && @paragraph.empty?
         @fresh_paragraph = false
       end
	else
		str_check = self.out.strip
		font_name = @font.basefont_name
		courier = !/courier/iu.match(font_name).nil?
		symbol = !/symbol/iu.match(font_name).nil?
		if(!@chapter.nil? && !str_check.empty? \
          && !@@skip_pattern.match(self.out))
			str = self.out
			@wrote_section_heading = false
			#for the first paragraph after a preformated paragraph
			if(!(courier || symbol) && @preformatted)
				@fresh_paragraph = true
			end
			if(@fresh_paragraph)
				@paragraph = @section.next_paragraph
			end
			if(symbol)
				@paragraph.set_format(:symbol)
				@symbol_format = true
			elsif(@symbol_format)
				@symbol_format = false
				@paragraph.reduce_format(:symbol)
			end
			if(courier)
				if(@paragraph.empty?)
					#str.strip!
             str.gsub(/^[\n\r]+/u, '')
					@paragraph.preformatted!
				elsif(!@paragraph.preformatted?)
					@paragraph = @section.next_paragraph
					@paragraph.preformatted!
				end
           if(@preceding_hr)
             str = "-"*80 << "\n" << str
             @preceding_hr = false
           end
			else
				str.gsub!(/-\n/u, "-")
				str.gsub!(/ ?\n ?/u, " ")
				@preformatted = false
			end
			@paragraph << str
			@fresh_paragraph = false
		end
	end
	@out = ''
end

#detect_tableheader? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'ext/fiparse/src/fachinfo_pdf.rb', line 21

def detect_tableheader?
	## ignore empty lines at the start of the page
	if(@tableheader_lineno == 0 && @out.strip.empty?)
		return true
	end
	lines = @paragraph.to_s.split("\n")
	if(@tableheader_lineno \
		&& (line = lines.at(@tableheader_lineno)) \
		&& line.strip == @out.strip)
		@tableheader_lineno += 1
		true
	else
		@tableheader_lineno = nil
		false
	end
end

#new_font(font) ⇒ Object 



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# File 'ext/fiparse/src/fachinfo_pdf.rb', line 37

def new_font(font)
	if(@font)
		self.add_text
		## if the following is preformatted text, we would like to 
		## know before the next call to add_text, e.g. for line_break
		## and similar
		if(/courier/iu.match(font.basefont_name))
			@preformatted = true
		end
	end
	@font = font
end

#send_flowing_data(data) ⇒ Object 



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# File 'ext/fiparse/src/fachinfo_pdf.rb', line 139

def send_flowing_data(data)
	@chars_since_last_linebreak += data.size
	self.out << data.gsub(/■/u, '')
end

#send_hr ⇒ Object 



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# File 'ext/fiparse/src/fachinfo_pdf.rb', line 143

def send_hr
  send_line_break
  if(@paragraph && @paragraph.preformatted?)
    unless(@@hr_pattern.match(self.out) \
           || @@hr_pattern.match(@paragraph[-6..-1]))
      self.out << "-"*80 << "\n"
      @preceding_hr = false
    end
  else
    @preceding_hr = true
  end
end

#send_image(handle) ⇒ Object 



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# File 'ext/fiparse/src/fachinfo_pdf.rb', line 155

def send_image(handle)
  send_line_break
  if img = handle.image
    prefix = @name.downcase.gsub(/[^a-z]/u, '')
    directory = File.join(IMAGE_DIR, prefix[0,2])
    FileUtils.mkdir_p directory
    files = Dir.glob("#{directory}/#{prefix}*")
    save = files.find { |path|
      begin
        other, = Magick::Image.read(path)
        other == img
      rescue
        false
      end
    }
    if save.nil?
      id = files.collect { |path|
        match = /(\d+)\.png/u.match File.basename(path)
        match[1].to_i
      }.max.to_i.next
      save = File.join directory, "#{prefix}_#{id}.png"
    end
    img.write save
    @section.next_image.src = save[%r!/resources/.*!u]
  end
  send_line_break
rescue ArgumentError
end

#send_line_break ⇒ Object 



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# File 'ext/fiparse/src/fachinfo_pdf.rb', line 195

def send_line_break
	## After the first period in 'Valid until' 
	## we can go on to the next chapter
	if(@chapter == @date && /\.\s*$/u.match(self.out))
		self.add_text
		@chapter = next_chapter
		@section = @chapter.next_section
		@paragraph = @section.next_paragraph
		@out = ''
		return
	end
	if(@preformatted)
		if(detect_tableheader?)
			@out = ''
		else
			self.add_text
			@paragraph << "\n" if(@paragraph)
		end
	elsif(@chars_since_last_linebreak < 80)
		self.send_paragraph
	elsif(!/[\s‐­-]$/u.match(self.out))
		self.out << " "
	end
	@chars_since_last_linebreak = 0
end

#send_page ⇒ Object 



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# File 'ext/fiparse/src/fachinfo_pdf.rb', line 183

def send_page
	## in newer fi-pdfs there is no change of font for 
	## pagenumbers. Here in send_page we can recognize 
	## and delete the page-numbering
	if(pos = @out.index(/\w+\s+\d+$/u))
		@out[pos..-1] = ''
	end
	self.add_text
	if(@preformatted)
		@tableheader_lineno = 0
	end
end

#send_paragraph ⇒ Object 



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# File 'ext/fiparse/src/fachinfo_pdf.rb', line 220

def send_paragraph
	self.add_text
     par = @section.paragraphs.first
	if(@section.subheading[-1] != ?\n && (par.nil? || par.empty?))
		@section.subheading << "\n"
	end
	unless(@preformatted)
		@fresh_paragraph = true
	end
end