734 lines
17 KiB
C
734 lines
17 KiB
C
/**
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* See Copyright Notice in picrin.h
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*/
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#include <stdlib.h>
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#include <string.h>
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#include <limits.h>
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#include "picrin.h"
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#include "picrin/proc.h"
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#include "picrin/port.h"
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#include "picrin/string.h"
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#include "picrin/blob.h"
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pic_value
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pic_eof_object()
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{
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pic_value v;
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pic_init_value(v, PIC_VTYPE_EOF);
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return v;
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}
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struct pic_port *
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pic_stdin(pic_state *pic)
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{
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struct pic_proc *proc;
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proc = pic_proc_ptr(pic_ref(pic, "current-input-port"));
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return pic_port_ptr(pic_apply(pic, proc, pic_nil_value()));
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}
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struct pic_port *
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pic_stdout(pic_state *pic)
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{
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struct pic_proc *proc;
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proc = pic_proc_ptr(pic_ref(pic, "current-output-port"));
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return pic_port_ptr(pic_apply(pic, proc, pic_nil_value()));
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}
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static pic_value
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port_new_stdport(pic_state *pic, xFILE *file, short dir)
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{
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struct pic_port *port;
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port = (struct pic_port *)pic_obj_alloc(pic, sizeof(struct pic_port), PIC_TT_PORT);
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port->file = file;
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port->flags = dir | PIC_PORT_TEXT;
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port->status = PIC_PORT_OPEN;
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return pic_obj_value(port);
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}
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struct pic_port *
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pic_open_input_string(pic_state *pic, const char *str)
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{
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struct pic_port *port;
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port = (struct pic_port *)pic_obj_alloc(pic, sizeof(struct pic_port *), PIC_TT_PORT);
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port->file = xmopen();
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port->flags = PIC_PORT_IN | PIC_PORT_TEXT;
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port->status = PIC_PORT_OPEN;
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xfputs(str, port->file);
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xfflush(port->file);
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xrewind(port->file);
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return port;
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}
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struct pic_port *
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pic_open_output_string(pic_state *pic)
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{
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struct pic_port *port;
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port = (struct pic_port *)pic_obj_alloc(pic, sizeof(struct pic_port *), PIC_TT_PORT);
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port->file = xmopen();
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port->flags = PIC_PORT_OUT | PIC_PORT_TEXT;
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port->status = PIC_PORT_OPEN;
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return port;
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}
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struct pic_string *
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pic_get_output_string(pic_state *pic, struct pic_port *port)
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{
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long size;
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char *buf;
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/* get endpos */
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xfflush(port->file);
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size = xftell(port->file);
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xrewind(port->file);
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/* copy to buf */
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buf = (char *)pic_alloc(pic, size + 1);
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buf[size] = 0;
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xfread(buf, size, 1, port->file);
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return pic_str_new(pic, buf, size);
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}
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void
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pic_close_port(pic_state *pic, struct pic_port *port)
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{
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if (xfclose(port->file) == EOF) {
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pic_error(pic, "close-port: failure");
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}
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port->status = PIC_PORT_CLOSE;
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}
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static pic_value
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pic_port_input_port_p(pic_state *pic)
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{
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pic_value v;
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pic_get_args(pic, "o", &v);
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if (pic_port_p(v) && (pic_port_ptr(v)->flags & PIC_PORT_IN) != 0) {
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return pic_true_value();
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}
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else {
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return pic_false_value();
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}
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}
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static pic_value
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pic_port_output_port_p(pic_state *pic)
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{
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pic_value v;
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pic_get_args(pic, "o", &v);
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if (pic_port_p(v) && (pic_port_ptr(v)->flags & PIC_PORT_OUT) != 0) {
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return pic_true_value();
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}
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else {
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return pic_false_value();
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}
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}
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static pic_value
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pic_port_textual_port_p(pic_state *pic)
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{
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pic_value v;
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pic_get_args(pic, "o", &v);
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if (pic_port_p(v) && (pic_port_ptr(v)->flags & PIC_PORT_TEXT) != 0) {
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return pic_true_value();
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}
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else {
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return pic_false_value();
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}
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}
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static pic_value
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pic_port_binary_port_p(pic_state *pic)
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{
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pic_value v;
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pic_get_args(pic, "o", &v);
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if (pic_port_p(v) && (pic_port_ptr(v)->flags & PIC_PORT_BINARY) != 0) {
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return pic_true_value();
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}
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else {
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return pic_false_value();
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}
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}
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static pic_value
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pic_port_port_p(pic_state *pic)
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{
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pic_value v;
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pic_get_args(pic, "o", &v);
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return pic_bool_value(pic_port_p(v));
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}
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static pic_value
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pic_port_input_port_open_p(pic_state *pic)
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{
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pic_value v;
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struct pic_port *port;
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pic_get_args(pic, "o", &v);
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if (! pic_port_p(v))
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return pic_false_value();
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port = pic_port_ptr(v);
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if ((port->flags & PIC_PORT_IN) == 0)
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return pic_false_value();
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return pic_bool_value(port->status == PIC_PORT_OPEN);
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}
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static pic_value
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pic_port_output_port_open_p(pic_state *pic)
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{
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pic_value v;
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struct pic_port *port;
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pic_get_args(pic, "o", &v);
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if (! pic_port_p(v))
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return pic_false_value();
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port = pic_port_ptr(v);
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if ((port->flags & PIC_PORT_OUT) == 0)
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return pic_false_value();
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return pic_bool_value(port->status == PIC_PORT_OPEN);
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}
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static pic_value
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pic_port_eof_object_p(pic_state *pic)
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{
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pic_value v;
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pic_get_args(pic, "o", &v);
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if (pic_vtype(v) == PIC_VTYPE_EOF) {
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return pic_true_value();
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}
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else {
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return pic_false_value();
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}
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}
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static pic_value
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pic_port_eof_object(pic_state *pic)
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{
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pic_get_args(pic, "");
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return pic_eof_object();
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}
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static pic_value
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pic_port_close_port(pic_state *pic)
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{
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struct pic_port *port;
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pic_get_args(pic, "p", &port);
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pic_close_port(pic, port);
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return pic_none_value();
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}
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#define assert_port_profile(port, flgs, stat, caller) do { \
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if ((port->flags & (flgs)) != (flgs)) { \
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switch (flgs) { \
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case PIC_PORT_IN: \
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pic_error(pic, caller ": expected output port"); \
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case PIC_PORT_OUT: \
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pic_error(pic, caller ": expected input port"); \
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case PIC_PORT_IN | PIC_PORT_TEXT: \
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pic_error(pic, caller ": expected input/textual port"); \
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case PIC_PORT_IN | PIC_PORT_BINARY: \
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pic_error(pic, caller ": expected input/binary port"); \
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case PIC_PORT_OUT | PIC_PORT_TEXT: \
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pic_error(pic, caller ": expected output/textual port"); \
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case PIC_PORT_OUT | PIC_PORT_BINARY: \
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pic_error(pic, caller ": expected output/binary port"); \
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} \
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} \
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if (port->status != stat) { \
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switch (stat) { \
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case PIC_PORT_OPEN: \
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pic_error(pic, caller ": expected open port"); \
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case PIC_PORT_CLOSE: \
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pic_error(pic, caller ": expected close port"); \
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} \
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} \
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} while (0)
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static pic_value
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pic_port_open_input_string(pic_state *pic)
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{
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struct pic_port *port;
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char *str;
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pic_get_args(pic, "z", &str);
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port = pic_open_input_string(pic, str);
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return pic_obj_value(port);
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}
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static pic_value
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pic_port_open_output_string(pic_state *pic)
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{
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struct pic_port *port;
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pic_get_args(pic, "");
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port = pic_open_output_string(pic);
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return pic_obj_value(port);
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}
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static pic_value
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pic_port_get_output_string(pic_state *pic)
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{
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struct pic_port *port = pic_stdout(pic);
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pic_get_args(pic, "|p", &port);
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assert_port_profile(port, PIC_PORT_OUT | PIC_PORT_TEXT, PIC_PORT_OPEN, "get-output-string");
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return pic_obj_value(pic_get_output_string(pic, port));
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}
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static pic_value
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pic_port_open_input_blob(pic_state *pic)
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{
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struct pic_port *port;
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struct pic_blob *blob;
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pic_get_args(pic, "b", &blob);
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port = (struct pic_port *)pic_obj_alloc(pic, sizeof(struct pic_port *), PIC_TT_PORT);
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port->file = xmopen();
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port->flags = PIC_PORT_IN | PIC_PORT_BINARY;
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port->status = PIC_PORT_OPEN;
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xfwrite(blob->data, 1, blob->len, port->file);
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xfflush(port->file);
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xrewind(port->file);
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return pic_obj_value(port);
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}
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static pic_value
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pic_port_open_output_bytevector(pic_state *pic)
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{
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struct pic_port *port;
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pic_get_args(pic, "");
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port = (struct pic_port *)pic_obj_alloc(pic, sizeof(struct pic_port *), PIC_TT_PORT);
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port->file = xmopen();
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port->flags = PIC_PORT_OUT | PIC_PORT_BINARY;
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port->status = PIC_PORT_OPEN;
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return pic_obj_value(port);
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}
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static pic_value
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pic_port_get_output_bytevector(pic_state *pic)
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{
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struct pic_port *port = pic_stdout(pic);
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long endpos;
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char *buf;
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pic_get_args(pic, "|p", &port);
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assert_port_profile(port, PIC_PORT_OUT | PIC_PORT_BINARY, PIC_PORT_OPEN, "get-output-bytevector");
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/* get endpos */
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xfflush(port->file);
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endpos = xftell(port->file);
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xrewind(port->file);
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/* copy to buf */
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buf = (char *)pic_alloc(pic, endpos);
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xfread(buf, 1, endpos, port->file);
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return pic_obj_value(pic_blob_new(pic, buf, endpos));
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}
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static pic_value
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pic_port_read_char(pic_state *pic)
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{
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char c;
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struct pic_port *port = pic_stdin(pic);
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pic_get_args(pic, "|p", &port);
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assert_port_profile(port, PIC_PORT_IN | PIC_PORT_TEXT, PIC_PORT_OPEN, "read-char");
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if ((c = xfgetc(port->file)) == EOF) {
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return pic_eof_object();
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}
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else {
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return pic_char_value(c);
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}
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}
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static pic_value
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pic_port_peek_char(pic_state *pic)
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{
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char c;
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struct pic_port *port = pic_stdin(pic);
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pic_get_args(pic, "|p", &port);
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assert_port_profile(port, PIC_PORT_IN | PIC_PORT_TEXT, PIC_PORT_OPEN, "peek-char");
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if ((c = xfgetc(port->file)) == EOF) {
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return pic_eof_object();
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}
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else {
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xungetc(c, port->file);
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return pic_char_value(c);
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}
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}
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static pic_value
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pic_port_read_line(pic_state *pic)
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{
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char c;
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struct pic_port *port = pic_stdin(pic), *buf;
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struct pic_string *str;
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pic_get_args(pic, "|p", &port);
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assert_port_profile(port, PIC_PORT_IN | PIC_PORT_TEXT, PIC_PORT_OPEN, "read-line");
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buf = pic_open_output_string(pic);
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while ((c = xfgetc(port->file)) != EOF && c != '\n') {
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xfputc(c, buf->file);
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}
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str = pic_get_output_string(pic, buf);
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if (pic_strlen(str) == 0 && c == EOF) {
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return pic_eof_object();
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}
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else {
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return pic_obj_value(str);
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}
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}
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static pic_value
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pic_port_char_ready_p(pic_state *pic)
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{
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struct pic_port *port = pic_stdin(pic);
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assert_port_profile(port, PIC_PORT_IN | PIC_PORT_TEXT, PIC_PORT_OPEN, "char-ready?");
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pic_get_args(pic, "|p", &port);
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return pic_true_value(); /* FIXME: always returns #t */
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}
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static pic_value
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pic_port_read_string(pic_state *pic){
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struct pic_port *port = pic_stdin(pic), *buf;
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pic_str *str;
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int k, i;
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char c;
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pic_get_args(pic, "i|p", &k, &port);
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assert_port_profile(port, PIC_PORT_IN | PIC_PORT_TEXT, PIC_PORT_OPEN, "read-stritg");
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buf = pic_open_output_string(pic);
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for(i = 0; i < k; ++i) {
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c = xfgetc(port->file);
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if( c == EOF){
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break;
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}
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xfputc(c, buf->file);
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}
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str = pic_get_output_string(pic, buf);
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if (pic_strlen(str) == 0 && c == EOF) {
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return pic_eof_object();
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}
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else {
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return pic_obj_value(str);
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}
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}
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static pic_value
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pic_port_read_byte(pic_state *pic){
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struct pic_port *port = pic_stdin(pic);
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char c;
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pic_get_args(pic, "|p", &port);
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assert_port_profile(port, PIC_PORT_IN | PIC_PORT_BINARY, PIC_PORT_OPEN, "read-u8");
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if ((c = xfgetc(port->file)) == EOF) {
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return pic_eof_object();
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}
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return pic_int_value(c);
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}
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static pic_value
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pic_port_peek_byte(pic_state *pic)
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{
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char c;
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struct pic_port *port = pic_stdin(pic);
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pic_get_args(pic, "|p", &port);
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assert_port_profile(port, PIC_PORT_IN | PIC_PORT_BINARY, PIC_PORT_OPEN, "peek-u8");
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if ((c = xfgetc(port->file)) == EOF) {
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return pic_eof_object();
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}
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else {
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xungetc(c, port->file);
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return pic_int_value(c);
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}
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}
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static pic_value
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pic_port_byte_ready_p(pic_state *pic)
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{
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struct pic_port *port = pic_stdin(pic);
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pic_get_args(pic, "|p", &port);
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assert_port_profile(port, PIC_PORT_IN | PIC_PORT_BINARY, PIC_PORT_OPEN, "u8-ready?");
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return pic_true_value(); /* FIXME: always returns #t */
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}
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static pic_value
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pic_port_read_blob(pic_state *pic){
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struct pic_port *port = pic_stdin(pic);
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int k, i;
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char *buf;
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pic_get_args(pic, "i|p", &k, &port);
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assert_port_profile(port, PIC_PORT_IN | PIC_PORT_BINARY, PIC_PORT_OPEN, "read-bytevector");
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buf = pic_calloc(pic, k, sizeof(char));
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i = xfread(buf, sizeof(char), k, port->file);
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if ( i == 0 ) {
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return pic_eof_object();
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}
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else {
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pic_realloc(pic, buf, i);
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return pic_obj_value(pic_blob_new(pic, buf, i));
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}
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}
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static pic_value
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pic_port_read_blob_ip(pic_state *pic){
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struct pic_port *port;
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struct pic_blob *bv;
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int i, n, start, end, len;
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char *buf;
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n = pic_get_args(pic, "b|pii", &bv, &port, &start, &end);
|
|
switch (n) {
|
|
case 1:
|
|
port = pic_stdin(pic);
|
|
case 2:
|
|
start = 0;
|
|
case 3:
|
|
end = bv->len;
|
|
}
|
|
|
|
assert_port_profile(port, PIC_PORT_IN | PIC_PORT_BINARY, PIC_PORT_OPEN, "read-bytevector!");
|
|
len = end - start;
|
|
|
|
buf = pic_calloc(pic, len, sizeof(char));
|
|
i = xfread(buf, sizeof(char), len, port->file);
|
|
memcpy(bv->data + start, buf, i);
|
|
pic_free(pic, buf);
|
|
|
|
if ( i == 0) {
|
|
return pic_eof_object();
|
|
}
|
|
else {
|
|
return pic_int_value(i);
|
|
}
|
|
}
|
|
|
|
static pic_value
|
|
pic_port_newline(pic_state *pic)
|
|
{
|
|
struct pic_port *port = pic_stdout(pic);
|
|
|
|
pic_get_args(pic, "|p", &port);
|
|
|
|
assert_port_profile(port, PIC_PORT_OUT | PIC_PORT_TEXT, PIC_PORT_OPEN, "newline");
|
|
|
|
xfputs("\n", port->file);
|
|
return pic_none_value();
|
|
}
|
|
|
|
static pic_value
|
|
pic_port_write_char(pic_state *pic)
|
|
{
|
|
char c;
|
|
struct pic_port *port = pic_stdout(pic);
|
|
|
|
pic_get_args(pic, "c|p", &c, &port);
|
|
|
|
assert_port_profile(port, PIC_PORT_OUT | PIC_PORT_TEXT, PIC_PORT_OPEN, "write-char");
|
|
|
|
xfputc(c, port->file);
|
|
return pic_none_value();
|
|
}
|
|
|
|
static pic_value
|
|
pic_port_write_string(pic_state *pic)
|
|
{
|
|
char *str;
|
|
struct pic_port *port;
|
|
int start, end, n, i;
|
|
|
|
n = pic_get_args(pic, "z|pii", &str, &port, &start, &end);
|
|
switch (n) {
|
|
case 1:
|
|
port = pic_stdout(pic);
|
|
case 2:
|
|
start = 0;
|
|
case 3:
|
|
end = INT_MAX;
|
|
}
|
|
|
|
assert_port_profile(port, PIC_PORT_OUT | PIC_PORT_TEXT, PIC_PORT_OPEN, "write-string");
|
|
|
|
for (i = start; i < end && str[i] != '\0'; ++i) {
|
|
xfputc(str[i], port->file);
|
|
}
|
|
return pic_none_value();
|
|
}
|
|
|
|
static pic_value
|
|
pic_port_write_byte(pic_state *pic)
|
|
{
|
|
int i;
|
|
struct pic_port *port = pic_stdout(pic);
|
|
|
|
pic_get_args(pic, "i|p", &i, &port);
|
|
|
|
assert_port_profile(port, PIC_PORT_OUT | PIC_PORT_BINARY, PIC_PORT_OPEN, "write-u8");
|
|
|
|
xfputc(i, port->file);
|
|
return pic_none_value();
|
|
}
|
|
|
|
static pic_value
|
|
pic_port_write_blob(pic_state *pic)
|
|
{
|
|
struct pic_blob *blob;
|
|
struct pic_port *port;
|
|
int start, end, n, i;
|
|
|
|
n = pic_get_args(pic, "b|pii", &blob, &port, &start, &end);
|
|
switch (n) {
|
|
case 1:
|
|
port = pic_stdout(pic);
|
|
case 2:
|
|
start = 0;
|
|
case 3:
|
|
end = blob->len;
|
|
}
|
|
|
|
assert_port_profile(port, PIC_PORT_OUT | PIC_PORT_BINARY, PIC_PORT_OPEN, "write-bytevector");
|
|
|
|
for (i = start; i < end; ++i) {
|
|
xfputc(blob->data[i], port->file);
|
|
}
|
|
return pic_none_value();
|
|
}
|
|
|
|
static pic_value
|
|
pic_port_flush(pic_state *pic)
|
|
{
|
|
struct pic_port *port = pic_stdout(pic);
|
|
|
|
pic_get_args(pic, "|p", &port);
|
|
|
|
assert_port_profile(port, PIC_PORT_OUT, PIC_PORT_OPEN, "flush-output-port");
|
|
|
|
xfflush(port->file);
|
|
return pic_none_value();
|
|
}
|
|
|
|
void
|
|
pic_init_port(pic_state *pic)
|
|
{
|
|
pic_deflibrary ("(picrin port)") {
|
|
pic_define(pic, "standard-input-port", port_new_stdport(pic, xstdin, PIC_PORT_IN));
|
|
pic_define(pic, "standard-output-port", port_new_stdport(pic, xstdout, PIC_PORT_OUT));
|
|
pic_define(pic, "standard-error-port", port_new_stdport(pic, xstderr, PIC_PORT_OUT));
|
|
}
|
|
|
|
pic_defun(pic, "input-port?", pic_port_input_port_p);
|
|
pic_defun(pic, "output-port?", pic_port_output_port_p);
|
|
pic_defun(pic, "textual-port?", pic_port_textual_port_p);
|
|
pic_defun(pic, "binary-port?", pic_port_binary_port_p);
|
|
pic_defun(pic, "port?", pic_port_port_p);
|
|
pic_defun(pic, "input-port-open?", pic_port_input_port_open_p);
|
|
pic_defun(pic, "output-port-open?", pic_port_output_port_open_p);
|
|
pic_defun(pic, "close-port", pic_port_close_port);
|
|
pic_defun(pic, "close-input-port", pic_port_close_port);
|
|
pic_defun(pic, "close-output-port", pic_port_close_port);
|
|
|
|
/* string I/O */
|
|
pic_defun(pic, "open-input-string", pic_port_open_input_string);
|
|
pic_defun(pic, "open-output-string", pic_port_open_output_string);
|
|
pic_defun(pic, "get-output-string", pic_port_get_output_string);
|
|
pic_defun(pic, "open-input-bytevector", pic_port_open_input_blob);
|
|
pic_defun(pic, "open-output-bytevector", pic_port_open_output_bytevector);
|
|
pic_defun(pic, "get-output-bytevector", pic_port_get_output_bytevector);
|
|
|
|
/* input */
|
|
pic_defun(pic, "read-char", pic_port_read_char);
|
|
pic_defun(pic, "peek-char", pic_port_peek_char);
|
|
pic_defun(pic, "read-line", pic_port_read_line);
|
|
pic_defun(pic, "eof-object?", pic_port_eof_object_p);
|
|
pic_defun(pic, "eof-object", pic_port_eof_object);
|
|
pic_defun(pic, "char-ready?", pic_port_char_ready_p);
|
|
pic_defun(pic, "read-string", pic_port_read_string);
|
|
pic_defun(pic, "read-u8", pic_port_read_byte);
|
|
pic_defun(pic, "peek-u8", pic_port_peek_byte);
|
|
pic_defun(pic, "u8-ready?", pic_port_byte_ready_p);
|
|
pic_defun(pic, "read-bytevector", pic_port_read_blob);
|
|
pic_defun(pic, "read-bytevector!", pic_port_read_blob_ip);
|
|
|
|
/* output */
|
|
pic_defun(pic, "newline", pic_port_newline);
|
|
pic_defun(pic, "write-char", pic_port_write_char);
|
|
pic_defun(pic, "write-string", pic_port_write_string);
|
|
pic_defun(pic, "write-u8", pic_port_write_byte);
|
|
pic_defun(pic, "write-bytevector", pic_port_write_blob);
|
|
pic_defun(pic, "flush-output-port", pic_port_flush);
|
|
}
|