Re: writing to binary files
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- Subject: Re: writing to binary files
- From: Merick <Merick_TeVaran@...>
- Date: 2008年4月16日 21:54:22 -0500
Jerome: I still haven't been able to get it compile myself, right now
I'm using a version that Shmuel emailed me
Carlos, here's the lua script I'm using to create the test file:
require("struct")
a = struct.pack("BHIL",1,2,3,4)
file = io.open("test.bin","wb")
file:write(a)
file:flush()
file:close()
here is how I'm trying to read the file using FB:
dim a as ubyte
dim b as ushort
dim c as uinteger
dim d as ulongint
open "test.bin" for binary access read as #1
get #1,,a
get #1,,b
get #1,,c
get #1,,d
close #1
print a
print b
print c
print d
sleep
this one is the same, only using a UDT instead of individual variables:
type test
a as ubyte
b as ushort
c as uinteger
d as ulongint
end type
dim t as test
open "test.bin" for binary access read as #1
get #1,,t
close #1
print t.a
print t.b
print t.c
print t.d
sleep
note: with the get statement, the second argument is for the position in
the file, if you leave it blank like I have here then it will read from
the current position in the file
I also tried that test script you posted, and it looks like it's
writing/reading the file correctly