File: [local] / OpenXM / src / ox_toolkit / ox_Xsample.c (download)
Revision 1.8, Tue Jul 26 12:52:05 2005 UTC (19 years, 2 months ago) by ohara
Branch: MAIN
CVS Tags: new-mathcap-branch Changes since 1.7: +3 -4
lines
Simplifying mathcap handling of ox_toolkit.
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/* -*- mode: C; coding: euc-japan -*- */
/* $OpenXM: OpenXM/src/ox_toolkit/ox_Xsample.c,v 1.8 2005/07/26 12:52:05 ohara Exp $ */
#include <stdio.h>
#include <stdlib.h>
#include "ox_toolkit.h"
OXFILE *fd_rw;
#define INIT_S_SIZE 2048
#define EXT_S_SIZE 2048
static int stack_size = 0;
static int stack_pointer = 0;
static cmo **stack = NULL;
int initialize_stack()
{
stack_pointer = 0;
stack_size = INIT_S_SIZE;
stack = malloc(stack_size*sizeof(cmo*));
}
static int extend_stack()
{
int size2 = stack_size + EXT_S_SIZE;
cmo **stack2 = malloc(size2*sizeof(cmo*));
memcpy(stack2, stack, stack_size*sizeof(cmo *));
free(stack);
stack = stack2;
stack_size = size2;
}
int push(cmo* m)
{
stack[stack_pointer] = m;
stack_pointer++;
if (stack_pointer >= stack_size) {
extend_stack();
}
}
cmo* pop()
{
if (stack_pointer > 0) {
stack_pointer--;
return stack[stack_pointer];
}
return new_cmo_null();
}
void pops(int n)
{
stack_pointer -= n;
if (stack_pointer < 0) {
stack_pointer = 0;
}
}
#define OX_XSAMPLE_VERSION "1999/12/14 15:25:00"
int sm_mathcap()
{
mathcap_init(OX_XSAMPLE_VERSION, "ox_Xsample");
push(oxf_cmo_mathcap(fd_rw));
return 0;
}
int sm_popCMO()
{
cmo* m = pop();
if (m != NULL) {
send_ox_cmo(fd_rw, m);
return 0;
}
return SM_popCMO;
}
cmo_error2 *make_error2(int code)
{
return new_cmo_int32(-1);
}
int get_i()
{
cmo *c = pop();
if (c->tag == CMO_INT32) {
return ((cmo_int32 *)c)->i;
}else if (c->tag == CMO_ZZ) {
return mpz_get_si(((cmo_zz *)c)->mpz);
}
make_error2(-1);
return 0;
}
int get_xy(int *x, int *y)
{
pop();
*x = get_i();
*y = get_i();
}
int my_setpixel()
{
int x, y;
get_xy(&x, &y);
setpixel(x, y);
push(new_cmo_int32(0));
}
int my_moveto()
{
int x, y;
get_xy(&x, &y);
moveto(x, y);
push(new_cmo_int32(0));
}
int my_lineto()
{
int x, y;
get_xy(&x, &y);
lineto(x, y);
push(new_cmo_int32(0));
}
int my_clear()
{
/* dummy */
pop();
push(new_cmo_int32(0));
}
int sm_executeFunction()
{
cmo_string *func = (cmo_string *)pop();
if (func->tag != CMO_STRING) {
push(make_error2(0));
return -1;
}
if (strcmp(func->s, "setpixel") == 0) {
my_setpixel();
}else if (strcmp(func->s, "moveto") == 0) {
my_moveto();
}else if (strcmp(func->s, "lineto") == 0) {
my_lineto();
}else if (strcmp(func->s, "clear") == 0) {
my_clear();
}else {
push(make_error2(0));
return -1;
}
}
int receive_and_execute_sm_command()
{
int code = receive_int32(fd_rw);
switch(code) {
case SM_popCMO:
sm_popCMO();
break;
case SM_executeFunction:
sm_executeFunction();
break;
case SM_mathcap:
sm_mathcap();
break;
case SM_setMathCap:
pop();
break;
default:
;
}
}
int receive()
{
int tag;
tag = receive_ox_tag(fd_rw);
switch(tag) {
case OX_DATA:
push(receive_cmo(fd_rw));
break;
case OX_COMMAND:
receive_and_execute_sm_command();
break;
default:
;
}
return 0;
}
int main()
{
ox_stderr_init(stderr);
initialize_stack();
fd_rw = oxf_open(3);
oxf_determine_byteorder_server(fd_rw);
gopen();
while(1) {
receive();
gFlush();
}
gclose();
}