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authorJérémy Zurcher <jeremy@asynk.ch>2011-04-08 17:59:24 +0200
committerJérémy Zurcher <jeremy@asynk.ch>2011-04-08 17:59:24 +0200
commitd62833580889816914eebb61ffcfcb26496ea883 (patch)
treeb638b8d17b9d204a8bbb15eb88089f0b68a29c68 /lib/efl/eet.rb
downloadffi-efl-d62833580889816914eebb61ffcfcb26496ea883.zip
ffi-efl-d62833580889816914eebb61ffcfcb26496ea883.tar.gz
initial commit
Diffstat (limited to 'lib/efl/eet.rb')
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diff --git a/lib/efl/eet.rb b/lib/efl/eet.rb
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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
+#