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|
#! /usr/bin/env ruby
# -*- coding: UTF-8 -*-
#
require 'ffi'
#
module EFL
module EET
#
MAJOR = 0
MINOR = 0
REVISION = 1
VERSION = [MAJOR,MINOR,REVISION].join '.'
#
class Error < Exception
ERROR_NONE=0
ERROR_BAD_OBJECT=1
ERROR_EMPTY=2
ERROR_NOT_WRITABLE=3
ERROR_OUT_OF_MEMORY=4
ERROR_WRITE_ERROR=5
ERROR_WRITE_ERROR_FILE_TOO_BIG=6
ERROR_WRITE_ERROR_IO_ERROR=7
ERROR_WRITE_ERROR_OUT_OF_SPACE=8
ERROR_WRITE_ERROR_FILE_CLOSED=9
ERROR_MMAP_FAILED=10
ERROR_X509_ENCODING_FAILED=11
ERROR_SIGNATURE_FAILED=12
ERROR_INVALID_SIGNATURE=13
ERROR_NOT_SIGNED=14
ERROR_NOT_IMPLEMENTED=15
ERROR_PRNG_NOT_SEEDED=16
ERROR_ENCRYPT_FAILED=17
ERROR_DECRYPT_FAILED=18
#
MSGS = {
0=>'No error, it\'s all fine!',
1=>' Given object or handle is NULL or invalid',
2=>'There was nothing to do',
3=>'Could not write to file or fine is #FILE_MODE_READ',
4=>'Could not allocate memory',
5=>'Failed to write data to destination',
6=>'Failed to write file since it is too big',
7=>'Failed to write since generic Input/Output error',
8=>'Failed to write due out of space',
9=>'Failed to write because file was closed',
10=>'Could not mmap file',
11=>'Could not encode using X509',
12=>'Could not validate signature',
13=>'Signature is invalid',
14=>'File or contents are not signed',
15=>'Function is not implemented',
16=>'Could not introduce random seed',
17=>'Could not encrypt contents',
18=>'Could not decrypt contents',
}
#
end
#
extend FFI::Library
#
ffi_lib 'eet'
functions = [
[ :eet_init, [ ], :int ],
[ :eet_shutdown, [], :int ],
[ :eet_clearcache, [], :void ],
[ :eet_open, [:string, :int], :pointer ],
[ :eet_mode_get, [:pointer], :int ],
[ :eet_close, [:pointer], :int ],
[ :eet_write, [:pointer, :string, :pointer, :int, :int], :int ],
[ :eet_read, [:pointer, :string, :pointer], :pointer ],
].each do |func|
begin
attach_function *func
rescue Object => e
puts "Could not attach #{func} #{e.message}"
end
end
#
def self.init
eet_init
end
#
def self.shutdown
eet_shutdown
end
#
def self.clearcache
eet_clearcache
end
#
FILE_MODE_INVALID = -1
FILE_MODE_READ = 0
FILE_MODE_WRITE = 1
FILE_MODE_READ_WRITE = 2
#
def self.open path, mode=FILE_MODE_READ, &blk
if blk
f = eet_open path, mode
raise Exception.new "Unable to open file #{path}" if f.nil?
yield EETFile.new f
eet_close f
else
f = eet_open path, mode
return EETFile.new f unless f.nil?
end
end
#
class EETFile
#
def initialize ptr
@ptr=ptr
end
private :initialize
#
def close
EET.eet_close @ptr
@ptr=nil
end
#
def mode_get
EET.eet_mode_get @ptr
end
#
def write key, data, compress=false
EET.eet_write @ptr, key, FFI::MemoryPointer.from_string(data), data.bytesize, ( compress ? 1 : 0 )
end
#
def read key
ptr = FFI::MemoryPointer.new(:int)
data = EET.eet_read @ptr, key, ptr
s = ptr.read_int
ptr.free
return nil if s==0
( data.null? ? nil : data.read_string[0..s-1] )
end
#
end
end
end
#
|
