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/*
* utf8.c:
*
* Copyright (c) 2008 James McKenzie <james@fishsoup.dhs.org>,
* All rights reserved.
*
*/
static char rcsid[] = "$Id$";
/*
* $Log$
* Revision 1.2 2008/02/22 23:39:27 james
* *** empty log message ***
*
* Revision 1.1 2008/02/22 19:12:05 james
* *** empty log message ***
*
*/
#include "project.h"
void utf8_flush(Context *c)
{
UTF8 *u=c->u;
int i;
for (i=0;i<u->utf_ptr;++i)
vt102_parse(c,u->utf_buf[i]);
u->utf_ptr=0;
u->in_utf8=0;
}
int utf8_parse(Context *c,int ch)
{
UTF8 *u=&c->u;
if (!u->in_utf8) {
/*FIXME: for the moment we bodge utf8 support*/
if (ch==0xb9) { /*CSI, not a valid utf8 start char*/
vt102_parse(c,ch);
} else if ((ch & 0xe0) == 0xc0) { /*Start of two byte unicode sequence*/
u->in_utf8=2;
u->utf_ptr=0;
u->utf_buf[u->utf_ptr++]=ch;
} else if ((ch & 0xf0) ==0xe0) { /*Start of three byte unicode sequence*/
u->in_utf8=3;
u->utf_ptr=0;
u->utf_buf[u->utf_ptr++]=ch;
} else if ((ch & 0xf8) ==0xf0) {
u->in_utf8=4;
u->utf_ptr=0;
u->utf_buf[u->utf_ptr++]=ch;
} else {
vt102_parse(c,ch);
}
} else {
if ((ch & 0xc0) != 0x80) {
utf8_flush(c);
vt102_parse(c,ch);
} else {
u->utf_buf[u->utf_ptr++]=ch;
u->in_utf8--;
}
}
}
UTF8 *utf8_new(void)
{
UTF8 *ret;
ret=(UTF8 *) malloc(sizeof(UTF8));
ret->in_utf8=0;
}
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