Config is read one byte at a time

[povilasb]

I was investigating my problems regarding crust configs using strace and as a side effect I noticed such syscall log:

open("/home/povilas/maidsafe/crust/target/debug/examples/sample.config", O_RDONLY|O_CLOEXEC) = 10
ioctl(10, FIOCLEX)                      = 0
flock(10, LOCK_SH)                      = 0
read(10, "{", 1)                        = 1
read(10, "\n", 1)                       = 1
read(10, " ", 1)                        = 1
read(10, " ", 1)                        = 1
read(10, "\"", 1)                       = 1
read(10, "h", 1)                        = 1
read(10, "a", 1)                        = 1
read(10, "r", 1)                        = 1
read(10, "d", 1)                        = 1
read(10, "_", 1)                        = 1
read(10, "c", 1)                        = 1
read(10, "o", 1)                        = 1
read(10, "d", 1)                        = 1
read(10, "e", 1)                        = 1
read(10, "d", 1)                        = 1
read(10, "_", 1)                        = 1
read(10, "c", 1)                        = 1
read(10, "o", 1)                        = 1
read(10, "n", 1)                        = 1
read(10, "t", 1)                        = 1
read(10, "a", 1)                        = 1
read(10, "c", 1)                        = 1
read(10, "t", 1)                        = 1
read(10, "s", 1)                        = 1

The config is read byte by byte. It doesn't look like the most efficient way to do it.
Was this behavior intended for some reasons?