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std::string copy from memory

Started by gimp Apr 26, 2004 at 11:32 PM 2 replies 300+ views

Original Post

Apr 26, 2004 at 11:32 PM

I have a few bytes in ram(memory mapped file). I want to create a std::string from this memory. I know the size of the string, it''s not null terminated. I was hoping that there would be something like string.append(memblock, size) Does such a method exist?

nickwinters

Apr 26, 2004 at 11:34 PM

If you know the size, just use a pointer and loop through. It''ll be roughly 3 lines.

-Nick

SiCrane

Apr 26, 2004 at 11:43 PM

std::string has a constructor that takes a char pointer and the number of characters to use to construct the string. So if buffer is a char pointer to the memory, and you want the first five bytes, then you can do:

std::string test(buffer, 5);

gimp

Apr 26, 2004 at 11:47 PM

I thought so, I''m sure I tested that. I must be feeding it bad data...

Many thanks,,

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