PureBasic Forums - English

Hi all,

I have written a program which successfully downloads a file from a web site. The file is downloaded in 1MB chunks. The end result being that I have approx. 200 "chunks" in my temporary folder and I need a bullet-proof way to stitch them back together again into a single file.

Does anyone have any suggestions as how best to achieve this? I thought I could use OpenFile to create my new file and then read in each chunk one after the other and write the data out with WriteData, but I am worried that the file buffer will never actually save until I call CloseFile (or the app ends?) and i'll fill up my memory with 200MB+ worth of file buffer data.

Any ideas very welcome.

Thanks,

Rich

file system is not stored in memory when using the purebasic commands (except for windows caching)

For anyone else who reads this - I found a rather elegant and fast solution to this other than the byte by byte reading process. I basically create a batch file that just has a single copy command in it, such as:

copy /y part1.bin /b + part2.bin /b + part3.bin /b DestFile.zip /b

(The /y surpresses output, the /b means join as binary)

I then just run the batch file with RunProgram, set to halt until it's finished and show no output.

Works a treat! I managed to join together an entire CD ISO image this way (720 x 1MB chunks) with no errors. I was impressed that the copy command could handle having 720 "parameters" passed to it

It may not be cross-platform, but that's not an issue in this case. And it was certainly quicker than a byte for byte copy.

Rich