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/*
* funtions for analyzing dvi in vf-file (vfd stands for vf-file dvi)
*/
#include "defs.h"
#include "commands.h"
#include "dconv.h"
#include "global.h"
int vfd_getcommand();
void vfd_backupone();
void vfd_getbytes();
void vfd_skipbytes();
int vfd_getuint();
int vfd_getint();
void vfd_movedown();
void vfd_movedown_v();
void vfd_moveover();
void vfd_moveover_v();
void vfd_setrule();
void vfd_setrule_v();
struct dconv vfd_dconv_templ = {
vfd_getcommand,
vfd_backupone,
vfd_getbytes,
vfd_skipbytes,
vfd_getuint,
vfd_getint,
NULL,
NULL,
NULL,
vfd_movedown,
vfd_movedown_v,
vfd_moveover,
vfd_moveover_v,
vfd_setrule,
vfd_setrule_v,
0
};
vfd_dirkeep()
{
vfd_dconv_templ.dc_movedown_v = vfd_dconv_templ.dc_movedown;
vfd_dconv_templ.dc_moveover_v = vfd_dconv_templ.dc_moveover;
vfd_dconv_templ.dc_setrule_v = vfd_dconv_templ.dc_setrule;
}
int
vfd_getcommand()
{
dc_bufbeg++;
return (dc_bufbeg > dc_bufend ? POST : *(dc_bufbeg-1));
}
void
vfd_backupone()
{
--dc_bufbeg;
}
void
vfd_getbytes(cp, n)
char *cp;
int n;
{
(void)strncpy(cp, (char *)dc_bufbeg, n);
dc_bufbeg += n;
}
void
vfd_skipbytes(n)
int n;
{
dc_bufbeg += n;
}
int
vfd_getuint(n)
int n;
{
int x;
x = makeuint(dc_bufbeg, n);
dc_bufbeg += n;
return x;
}
int
vfd_getint(n)
int n;
{
int x;
x = makeint(dc_bufbeg, n);
dc_bufbeg += n;
return x;
}
extern int command;
void
vfd_movedown(a, n)
byte *a;
int n;
{
if (n == 0)
dev_move0(command);
else
dev_makemove(scale(makeint(a, n), dc_scale), command-n);
}
void
vfd_movedown_v(a, n, l)
byte *a;
int n, l;
{
if (DOWN1 <= command && command <= DOWN4)
l = makeint(a, n);
dev_makemove(-scale(l, dc_scale), RIGHT1-1);
}
void
vfd_moveover(b, n)
byte *b;
int n;
{
if (n == 0)
dev_move0(command);
else
dev_makemove(scale(makeint(b, n), dc_scale), command-n);
}
void
vfd_moveover_v(b, n, l)
byte *b;
int n, l;
{
if (RIGHT1 <= command && command <= RIGHT4)
l = makeint(b, n);
dev_makemove(scale(l, dc_scale), DOWN1-1);
}
void
vfd_setrule(a, b, Set) /* this routine will draw a rule */
byte *a, *b;
BOOLEAN Set;
{
dev_setrule(scale(makeint(a, 4), dc_scale),
scale(makeint(b, 4), dc_scale), command);
}
void
vfd_setrule_v(a, b, Set) /* this routine will draw a rule */
byte *a, *b;
BOOLEAN Set;
{
d_setrule_v(scale(makeint(a, 4), dc_scale),
scale(makeint(b, 4), dc_scale), Set);
}
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