* =========================================================================
*/
int grs_perl_readf(struct perl_context *context, size_t len);
+int grs_perl_readline(struct perl_context *context);
+char grs_perl_getc(struct perl_context *context);
off_t grs_perl_seekf(struct perl_context *context, off_t offset);
off_t grs_perl_tellf(struct perl_context *context);
void grs_perl_endf(struct perl_context *context, off_t offset);