Class: Palm::WabaDB

Inherits:
PDB
  • Object
show all
Defined in:
lib/palm/waba_db.rb

Overview

SuperWaba supports Palm PDB files, but handles them a little awkwardly. Each of the file’s different record types must be passed in when constructing a new WabaDB so we know what record types are available.

Constant Summary

Constants inherited from PDB

PDB::ATTRIBUTE_CODES, PDB::HEADER_LENGTH, PDB::INDEX_RECORD_LENGTH, PDB::INDEX_RESOURCE_LENGTH, PDB::RECORD_INDEX_HEADER_LEN

Instance Attribute Summary

Attributes inherited from PDB

#attributes, #backed_up_at, #created_at, #creator, #data, #modified_at, #modnum, #name, #type, #unique_id_seed, #version

Instance Method Summary collapse

Methods inherited from PDB

#load, #load_file, #resource?, #write, #write_file

Constructor Details

#initialize(*record_classes) ⇒ WabaDB

Create a new WabaDB with record_classes as the available types of records. See Palm::WabaRecord for more information.



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# File 'lib/palm/waba_db.rb', line 8

def initialize(*record_classes)
	super()
	if record_classes.empty?
		raise ArgumentError.new('At least one WabaRecord class must be provided.')
	end
	@record_index = {}
	record_classes.each{|c| @record_index[c.class_id] = c }
	@last_class = record_classes.first
end

Instance Method Details

#pack_entry(entry) ⇒ Object 



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# File 'lib/palm/waba_db.rb', line 25

def pack_entry(entry)
	data = ""
	s = WabaStringIO.new(data)
	s.write_byte(entry.class_id)
	entry.write(s)
	data
end

#unpack_entry(data) ⇒ Object 



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# File 'lib/palm/waba_db.rb', line 18

def unpack_entry(data)
	s = WabaStringIO.new(data)
	class_id = s.get_byte
	c = class_for(class_id)
	c.new.read(s)
end