buffer

The gem to operate low level I/O data buffer

Example

gem install 'data-buffer'

require 'buffer'

buf = Buffer.new(1024) # Create char* buffer with size of 1024
buf.clear # memset 0 to buffer size
buf.size # return buffer size
buf.to_s # convert to string. WARNING: make sure the string has NUL terminator
buf.bytes # convert to char byte array

buf.resize(2048) # realloc the buffer to 2048

buf = Buffer.from('Hello World') # Create char* from existing string
buf = Buffer.from([1, 2, 3, 244]) # Create char* from existing char array

buf.data # Get raw data struct

# struct buffer_data {
#   size_t buffer_size;
#   char* buffer;
# };
#
# buffer_data* data = (buffer_data*) ((struct RData *)obj)->data;