The above input function is appropriate for relatively small files
which can be represented as a whole in UCS-4. The method shown in
test.c will return an EOF after each block of bytes, for to stop the
interpreter and regain control. Then, the s->olen characters in
s->obuf can be processed (e.g., displayed using an appropriate font),
the memory in s->obuf be freed and s->olen reset to zero. Obviously,
it's important to have s->olen never greater than the memory allocated
currently for s->obuf. After that, the output function is
reinitialized to return the next block of bytes and the interpreter is
called again.

 

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