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/*
* funtions for analyzing dvi in dvi-file (dfd stands for dvi-file dvi)
*/
#include "defs.h"
#include "commands.h"
#include "dconv.h"
#include "global.h"
int dfd_getcommand();
void dfd_backupone();
void dfd_getbytes();
void dfd_skipbytes();
int dfd_getuint();
int dfd_getint();
void dfd_movedown();
void dfd_movedown_v();
void dfd_moveover();
void dfd_moveover_v();
void dfd_setrule();
void dfd_setrule_v();
struct dconv dfd_dconv_templ = {
dfd_getcommand,
dfd_backupone,
dfd_getbytes,
dfd_skipbytes,
dfd_getuint,
dfd_getint,
NULL,
NULL,
NULL,
dfd_movedown,
dfd_movedown_v,
dfd_moveover,
dfd_moveover_v,
dfd_setrule,
dfd_setrule_v,
0
};
int
dfd_getcommand()
{
return getuint(dc_file, 1);
}
void
dfd_backupone()
{
(void)fseek(dc_file, -1L, SEEK_CUR);
}
void
dfd_getbytes(cp, n)
byte *cp;
int n;
{
getbytes(dc_file, cp, n);
}
void
dfd_skipbytes(n)
int n;
{
(void)fseek(dc_file, (long)n, SEEK_CUR);
}
int
dfd_getuint(n)
int n;
{
return getuint(dc_file, n);
}
int
dfd_getint(n)
int n;
{
return getint(dc_file, n);
}
void
ReadFontDef(k, hdfip)
int k;
struct font_index **hdfip;
{
int c, s, d, a, l;
byte n[STRSIZE];
c = getuint(dc_file, 4); /* checksum */
s = getuint(dc_file, 4); /* scaled size */
d = getuint(dc_file, 4); /* design size */
a = getuint(dc_file, 1); /* area length for font name */
l = getuint(dc_file, 1); /* device length */
getbytes(dc_file, n, a+l);
n[a+l] = '\0';
readfontdef(k, c, s, d, a, l, (char *)n, hdfip);
}
void
SkipFontDef()
{
int a, l;
skipbytes(dc_file, 4*3);
a = getuint(dc_file, 1);
l = getuint(dc_file, 1);
skipbytes(dc_file, a+l);
}
int
HasBeenRead(k, hdfidx)
int k;
struct font_index *hdfidx;
{
struct font_index *ptr;
for (ptr = hdfidx; (ptr!=NULL) && (ptr->k!=k); )
ptr = ptr->next;
return (ptr != NULL);
}
void
dfd_movedown(a)
int a;
{
v += a;
}
void
dfd_movedown_v(a)
int a;
{
h -= a;
}
void
dfd_moveover(b)
int b;
{
h += b;
}
void
dfd_moveover_v(b)
int b;
{
v += b;
}
void
dfd_setrule(a, b, Set) /* this routine will draw a rule */
int a, b;
BOOLEAN Set;
{
if (a > 0 && b > 0) {
dev_setposn(h, v); /* lower left corner */
dev_setrule(a, b);
}
if (Set)
h += b;
}
void
dfd_setrule_v(a, b, Set) /* this routine will draw a rule */
int a, b;
BOOLEAN Set;
{
if (a > 0 && b > 0) {
dev_setposn(h, v); /* lower left corner */
dev_setrule(-b, a);
}
if (Set)
v += b;
}
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