HOW TO USE FILE STREAM TO READ AND WRITE FILES OF SEVERAL HUNDRED MEGABYTES IN DELPHI?

I can't read your intentions, judging from the use of tdecompressionstream, it is to decompress something. Since it is decompressed, the number of bytes after DS decompresses the original file will not be the size of the original file, and the 9996 in sobeginning) is the size of the original file, or is it the size of the original file after decompression? If it's the size of the original file, then the positioning here is wrong.

Open the file fopen("The path that needs to be opened")

The row is then read using the fgets function.

#include

#include

#include

#define max_line 1024

int main()

The functions that can be referred to are fopen, fread, fwrite, and fclose

Streams should be the same for the user, the user just uses the stream to save and output information, and the location of the medium in which it is stored is handled by the system, or it is up to you to manually code and choose.

Memory streams are obviously faster than file streams, but file streams are obviously larger in capacity than memory streams.

Is buffer1 defined as an array or a pointer? Or integer?

If it is an integer, the length is 4 bytes, more than 4 bytes, of course, there is an error, if there is more data, you can define an array, and then read the buffer1:array[1... in the array4096] of integer;4096 integers can be read.

m:=;tmemorystream(m).loadfromfile(;

sizeof(buffer1));

However, if you are using a memory stream, you can also directly manipulate its pointer buffer1:pinteger;

m:=;tmemorystream(m).loadfromfile(;

buffer1:=;

for i:=0 to div sizeof(integer) do

beginbuffer1 is the integer number.

inc(buffer1);

end;