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/*
* This file is based on Beebe's driver program.
*/
#include "defs.h"
#include "global.h"
#include "rastfont.h"
#include "gffont.h"
#ifdef KPATHSEA
#undef STREQ
#include <kpathsea/config.h>
#include <kpathsea/tex-file.h>
#endif
int gftype_access();
void init_gf_fontinfo();
struct fontop gfop = {
"gf",
pathtype_init,
gftype_access,
init_gf_fontinfo,
};
static FILE *fntfp;
void loadgfchar();
int gftype_access(proto, fe, acca)
char *proto;
struct font_entry *fe;
struct accarg *acca;
{
char *filename;
BOOLEAN ok;
rast_mag(fe, acca, 1);
#ifdef KPATHSEA
if (ok = ((filename = kpsearch_glyph(proto, fe->n, kpse_gf_format,
acca, fe->name)) != NULL))
strcpy(fe->name, filename);
#else
pave(fe->name, proto, acca);
ok = access(fe->name, R_OK) == 0;
#endif
#ifdef DEBUG
rast_debug_report(fe, acca, ok, "gf");
#endif
return ok;
}
void
init_gf_fontinfo(fe)
struct font_entry *fe;
{
void read_gf_fontinfo();
fe->fnt_readfontinfo = read_gf_fontinfo;
init_rast_fontinfo(fe);
}
void
read_gf_fontinfo(fe)
struct font_entry *fe;
{
int t, i;
struct rastchar_entry *ce;
struct rastinitfontinfo *rii;
struct rastfntinfo *rfi;
int ds;
long possave;
openfontfile(fe);
fntfp = fe->openfile;
(void)fseek(fntfp, -4L, SEEK_END);
while ((t = getuint(fntfp, 1)) == GF_FILLER)
(void)fseek(fntfp, -2L, SEEK_CUR);
if (t != GF_ID)
Fatal("GF ID = %d, can only process GF ID = %d files",
t, GF_ID);
(void)fseek(fntfp, -6L, SEEK_CUR);
if ((t = getuint(fntfp, 1)) != GF_POSTPOST)
Fatal("GF PostPost = %d, can only process GF PostPost = %d files",
t, GF_POSTPOST);
(void)fseek(fntfp, (long)getuint(fntfp, 4), SEEK_SET);
if ((t = getuint(fntfp, 1)) != GF_POST)
Fatal("GF Post = %d, can only process GF Post = %d files",
t, GF_POST);
(void)fseek(fntfp, 4L, SEEK_CUR);
ds = getuint(fntfp, 4);
t = getuint(fntfp, 4);
if ((fe->c != 0) && (t != 0) && (fe->c != t))
Warning("font = \"%s\",\n-->font checksum = %d,\n-->dvi checksum = %d",
fe->name, fe->c, t);
t = getuint(fntfp, 4);
(void)fseek(fntfp, 20L, SEEK_CUR);
rii = rastinifinfo(fe);
rastfinfo(fe) = rfi = alloc_rastfinfo(rii->maxc+1, TRUE, rii);
dev_rast_initfe(fe);
/* rfi->designsize = ds; */
/* rfi->magnification = (0.5 + 5.0 * 72.27 * (float)t) / 65536.0; */
rfi->nfntchars = rii->maxc + 1;
while (((t = getuint(fntfp, 1)) == GF_CHAR_LOC) ||
(t == GF_CHAR_LOC0)) {
i = getuint(fntfp, 1);
if (rii->mark[i] == FALSE) {
if (t==GF_CHAR_LOC)
(void)fseek(fntfp, 16L, SEEK_CUR);
else
(void)fseek(fntfp, 9L, SEEK_CUR);
} else {
ce = &(rfi->ch[i]);
if (t == GF_CHAR_LOC)
(void)fseek(fntfp, 8L, SEEK_CUR);
else
(void)fseek(fntfp, 1L, SEEK_CUR);
ce->tfmw = scale(getuint(fntfp, 4), fe->s);
ce->where.fileoffset = getuint(fntfp, 4);
possave = ftell(fntfp);
loadgfchar(fe, i);
dev_rast_initfontdict(fe, i);
(void)fseek(fntfp, possave, SEEK_SET);
}
}
if (t != GF_POSTPOST)
Fatal("There is %d between Post Charloc and PostPost", t);
free((char *)rii);
}
#define WHITE 0
#define BLACK 1
#define SETBIT(x,y) pixel[y+(x>>3)] |= 0x80>>(x&7)
#define INVERT(x) x = 1-x
void
loadgfchar(fe, c)
struct font_entry *fe;
int c;
{
char *pixel;
int i, j, k, t;
int min_m, max_m, del_m, min_n, max_n, del_n;
int paint, length;
struct rastchar_entry *ce;
ce = &(rastfinfo(fe)->ch[c]);
(void)fseek(fntfp, (long)(ce->where.fileoffset), SEEK_SET);
for (; t = getuint(fntfp, 1); ) {
if (GF_XXX1 <= t && t <= GF_XXX4)
(void)fseek(fntfp, (long)getint(fntfp, t - GF_XXX1 + 1), SEEK_CUR);
else if (t == GF_YYY)
(void)fseek(fntfp, 4L, SEEK_CUR);
else if (t == GF_NOP)
;
else
break;
}
if (t == GF_BOC) {
if (getuint(fntfp, 4) != c)
Fatal("Postamble %d points glyph %d", c, t);
(void)fseek(fntfp, 4L, SEEK_CUR);
min_m = getint(fntfp, 4);
max_m = getint(fntfp, 4);
min_n = getint(fntfp, 4);
max_n = getint(fntfp, 4);
del_m = max_m - min_m;
del_n = max_n - min_n;
} else if (t == GF_BOC1) {
if (getuint(fntfp, 1) != c)
Fatal("Postamble %d points glyph %d", c, t);
del_m = getuint(fntfp, 1);
max_m = getuint(fntfp, 1);
del_n = getuint(fntfp, 1);
max_n = getuint(fntfp, 1);
min_m = max_m - del_m;
} else
Fatal("%d should be GF BOC or GF BOC1", t);
ce->width = del_m;
ce->height = del_n + 1;
ce->xoffset = -min_m;
ce->yoffset = max_n;
ce->nbpl = ((unsigned short)(ce->width + 31) >> 5) * 4;
if ((pixel = (char *)malloc(ce->nbpl * ce->height)) == NULL)
Fatal("Unable to allocate memory for char");
for (i = 0; i < (int)ce->height; i++)
for (j = 0; j < (int)ce->nbpl; j++)
pixel[j+i*ce->nbpl] = 0;
ce->where.pixptr = pixel;
i = j = 0;
paint = WHITE;
while ((t = getuint(fntfp, 1)) != GF_EOC) {
switch (t) {
case GF_PAINT_0 :
INVERT(paint);
break;
case GF_PAINT1 : case GF_PAINT2 : case GF_PAINT3 :
length = getuint(fntfp, t - GF_PAINT1 + 1);
if (paint == BLACK)
for (k = 0; k < length; i++, k++)
SETBIT(i, j);
else
i += length;
INVERT(paint);
break;
case GF_SKIP0 :
j += ce->nbpl;
i = 0;
paint = WHITE;
break;
case GF_SKIP1 : case GF_SKIP2 : case GF_SKIP3 :
j += ce->nbpl * (getuint(fntfp, t - GF_SKIP0) + 1);
i = 0;
paint = WHITE;
break;
case GF_XXX1 : case GF_XXX2 : case GF_XXX3 : case GF_XXX4 :
(void)fseek(fntfp, (long)getint(fntfp, t - GF_XXX1 + 1), SEEK_CUR);
break;
case GF_YYY :
(void)fseek(fntfp, 4L, SEEK_CUR);
break;
case GF_NOP :
break;
default :
if ((GF_PAINT_0 < t) && (t < GF_PAINT1)) {
length = t - GF_PAINT_0;
if (paint == BLACK)
for (k = 0; k < length; i++, k++)
SETBIT(i,j);
else
i += length;
INVERT(paint);
} else if ((GF_NEW_ROW_0 <= t) && (t <= GF_NEW_ROW_MAX)) {
j += ce->nbpl;
paint = BLACK;
i = t - GF_NEW_ROW_0;
} else {
(void)fprintf(stderr, "GF invalid %d command in %s.\n",
t, fe->name);
(void)fseek(fntfp, -20L, SEEK_CUR);
for (k = 0; k < 20; k++)
(void)fprintf(stderr, "%3d ", getuint(fntfp, 1));
(void)fprintf(stderr, "\n");
for (k = 0; k < 20; k++)
(void)fprintf(stderr, "%3d ", getuint(fntfp, 1));
(void)fprintf(stderr, "\n");
}
break;
}
}
}
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