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/* This is dvipdfmx, an eXtended version of dvipdfm by Mark A. Wicks.
Copyright (C) 2007-2014 by Jin-Hwan Cho and Shunsaku Hirata,
the dvipdfmx project team.
Copyright (C) 1998, 1999 by Mark A. Wicks <mwicks@kettering.edu>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "system.h"
#include "numbers.h"
#include "error.h"
#include "mem.h"
#include "dpxfile.h"
/* pdfdev... */
#include "pdfdev.h"
#include "tfm.h"
#include "dvi.h"
#include "vf.h"
#include "dvipdfmx.h"
#include "dvicodes.h"
#define VF_ALLOC_SIZE 16u
#define VF_ID 202
#define FIX_WORD_BASE 1048576.0
#define TEXPT2PT (72.0/72.27)
#define FW2PT (TEXPT2PT/((double)(FIX_WORD_BASE)))
static unsigned char verbose = 0;
void vf_set_verbose(void)
{
if (verbose < 255) verbose++;
}
struct font_def {
int32_t font_id /* id used internally in vf file */;
uint32_t checksum, size, design_size;
char *directory, *name;
int tfm_id; /* id returned by TFM module */
int dev_id; /* id returned by DEV module */
};
struct vf
{
char *tex_name;
spt_t ptsize;
uint32_t design_size; /* A fixword-pts quantity */
int num_dev_fonts, max_dev_fonts;
struct font_def *dev_fonts;
unsigned char **ch_pkt;
uint32_t *pkt_len;
unsigned num_chars;
};
struct vf *vf_fonts = NULL;
int num_vf_fonts = 0, max_vf_fonts = 0;
/* Set NAME to a signed quad that must be positive */
static uint32_t get_positive_quad (FILE *vf_file, const char *name)
{
int32_t val = get_signed_quad (vf_file);
if (val < 0)
ERROR ("Bad VF: negative %s: %d", name, val);
return (uint32_t)val;
}
static void read_header(FILE *vf_file, int thisfont)
{
/* Check for usual signature */
if (get_unsigned_byte (vf_file) == PRE &&
get_unsigned_byte (vf_file) == VF_ID) {
/* If here, assume it's a legitimate vf file */
/* skip comment */
skip_bytes (get_unsigned_byte (vf_file), vf_file);
/* Skip checksum */
skip_bytes (4, vf_file);
vf_fonts[thisfont].design_size = get_positive_quad(vf_file, "design_size");
} else { /* Try to fail gracefully and return an error to caller */
fprintf (stderr, "VF file may be corrupt\n");
}
}
static void resize_vf_fonts(int size)
{
int i;
if (size > max_vf_fonts) {
vf_fonts = RENEW (vf_fonts, size, struct vf);
for (i=max_vf_fonts; i<size; i++) {
vf_fonts[i].num_dev_fonts = 0;
vf_fonts[i].max_dev_fonts = 0;
vf_fonts[i].dev_fonts = NULL;
}
max_vf_fonts = size;
}
return;
}
static void resize_one_vf_font (struct vf *a_vf, unsigned size)
{
unsigned i;
if (size > (a_vf->num_chars)) {
size = MAX (size, a_vf->num_chars+256);
a_vf->ch_pkt = RENEW (a_vf->ch_pkt, size, unsigned char *);
a_vf->pkt_len = RENEW (a_vf->pkt_len, size, uint32_t);
for (i=a_vf->num_chars; i<size; i++) {
(a_vf->ch_pkt)[i] = NULL;
(a_vf->pkt_len)[i] = 0;
}
a_vf->num_chars = size;
}
}
static void read_a_char_def(FILE *vf_file, int thisfont, uint32_t pkt_len,
uint32_t ch)
{
unsigned char *pkt;
#ifdef DEBUG
fprintf (stderr, "read_a_char_def: len=%u, ch=%u\n", pkt_len, ch);
#endif
/* Resize and initialize character arrays if necessary */
if (ch >= vf_fonts[thisfont].num_chars) {
resize_one_vf_font (vf_fonts+thisfont, ch+1);
}
if (pkt_len > 0) {
pkt = NEW (pkt_len, unsigned char);
if (fread (pkt, 1, pkt_len, vf_file) != pkt_len)
ERROR ("VF file ended prematurely.");
(vf_fonts[thisfont].ch_pkt)[ch] = pkt;
}
(vf_fonts[thisfont].pkt_len)[ch] = pkt_len;
return;
}
static void read_a_font_def(FILE *vf_file, int32_t font_id, int thisfont)
{
struct font_def *dev_font;
int dir_length, name_length;
#ifdef DEBUG
fprintf (stderr, "read_a_font_def: font_id = %d\n", font_id);
#endif
if (vf_fonts[thisfont].num_dev_fonts >=
vf_fonts[thisfont].max_dev_fonts) {
vf_fonts[thisfont].max_dev_fonts += VF_ALLOC_SIZE;
vf_fonts[thisfont].dev_fonts = RENEW
(vf_fonts[thisfont].dev_fonts,
vf_fonts[thisfont].max_dev_fonts,
struct font_def);
}
dev_font = vf_fonts[thisfont].dev_fonts+
vf_fonts[thisfont].num_dev_fonts;
dev_font -> font_id = font_id;
dev_font -> checksum = get_unsigned_quad (vf_file);
dev_font -> size = get_positive_quad (vf_file, "font_size");
dev_font -> design_size = get_positive_quad (vf_file, "font_design_size");
dir_length = get_unsigned_byte (vf_file);
name_length = get_unsigned_byte (vf_file);
dev_font -> directory = NEW (dir_length+1, char);
dev_font -> name = NEW (name_length+1, char);
fread (dev_font -> directory, 1, dir_length, vf_file);
fread (dev_font -> name, 1, name_length, vf_file);
(dev_font -> directory)[dir_length] = 0;
(dev_font -> name)[name_length] = 0;
vf_fonts[thisfont].num_dev_fonts += 1;
dev_font->tfm_id = tfm_open (dev_font -> name, 1); /* must exist */
dev_font->dev_id =
dvi_locate_font (dev_font->name,
sqxfw (vf_fonts[thisfont].ptsize,
dev_font->size));
#ifdef DEBUG
fprintf (stderr, "[%s/%s]\n", dev_font -> directory, dev_font -> name);
#endif
return;
}
static int32_t get_vf_unsigned_num (FILE *vf_file, unsigned char num)
{
int32_t val = get_unsigned_byte (vf_file);
switch (num) {
case 3: if (val > 0x7f)
val -= 0x100;
val = (val << 8) | get_unsigned_byte (vf_file);
case 2: val = (val << 8) | get_unsigned_byte (vf_file);
case 1: val = (val << 8) | get_unsigned_byte (vf_file);
default: break;
}
return val;
}
static void process_vf_file (FILE *vf_file, int thisfont)
{
int eof = 0, code;
int32_t font_id;
while (!eof) {
code = get_unsigned_byte (vf_file);
switch (code) {
case FNT_DEF1: case FNT_DEF2: case FNT_DEF3: case FNT_DEF4:
font_id = get_vf_unsigned_num (vf_file, code-FNT_DEF1);
read_a_font_def (vf_file, font_id, thisfont);
break;
default:
if (code < 242) {
/* For a short packet, code is the pkt_len */
uint32_t ch = get_unsigned_byte (vf_file);
/* Skip over TFM width since we already know it */
skip_bytes (3, vf_file);
read_a_char_def (vf_file, thisfont, code, ch);
break;
}
if (code == 242) {
uint32_t pkt_len = get_positive_quad (vf_file, "pkt_len");
uint32_t ch = get_unsigned_quad (vf_file);
/* Skip over TFM width since we already know it */
skip_bytes (4, vf_file);
if (ch < 0x1000000U)
read_a_char_def (vf_file, thisfont, pkt_len, ch);
else {
fprintf (stderr, "char=%u\n", ch);
ERROR ("Long character (>24 bits) in VF file.\nI can't handle long characters!\n");
}
break;
}
if (code == POST) {
eof = 1;
break;
}
fprintf (stderr, "Quitting on code=%d\n", code);
eof = 1;
break;
}
}
return;
}
/* Unfortunately, the following code isn't smart enough
to load the vf only once for multiple point sizes.
You will get a separate copy of each VF in memory (and a separate
opening and reading of the file) for
each point size. Since VFs are pretty small, I guess
this is tolerable for now. In any case,
the PDF file will never repeat a physical font name */
/* Note: This code needs to be able to recurse */
/* Global variables such as num_vf_fonts require careful attention */
int vf_locate_font (const char *tex_name, spt_t ptsize)
{
int thisfont = -1, i;
char *full_vf_file_name;
FILE *vf_file;
/* Has this name and ptsize already been loaded as a VF? */
for (i=0; i<num_vf_fonts; i++) {
if (!strcmp (vf_fonts[i].tex_name, tex_name) &&
vf_fonts[i].ptsize == ptsize)
break;
}
if (i != num_vf_fonts) {
thisfont = i;
} else {
/* It's hasn't already been loaded as a VF, so try to load it */
full_vf_file_name = kpse_find_file (tex_name,
kpse_vf_format,
1);
if (!full_vf_file_name) {
full_vf_file_name = kpse_find_file (tex_name,
kpse_ovf_format,
1);
}
if (full_vf_file_name &&
(vf_file = MFOPEN (full_vf_file_name, FOPEN_RBIN_MODE)) != NULL) {
if (verbose == 1)
fprintf (stderr, "(VF:%s", tex_name);
if (verbose > 1)
fprintf (stderr, "(VF:%s", full_vf_file_name);
if (num_vf_fonts >= max_vf_fonts) {
resize_vf_fonts (max_vf_fonts + VF_ALLOC_SIZE);
}
thisfont = num_vf_fonts++;
{ /* Initialize some pointers and such */
vf_fonts[thisfont].tex_name = NEW (strlen(tex_name)+1, char);
strcpy (vf_fonts[thisfont].tex_name, tex_name);
vf_fonts[thisfont].ptsize = ptsize;
vf_fonts[thisfont].num_chars = 0;
vf_fonts[thisfont].ch_pkt = NULL;
vf_fonts[thisfont].pkt_len = NULL;
}
read_header(vf_file, thisfont);
process_vf_file (vf_file, thisfont);
if (verbose)
fprintf (stderr, ")");
MFCLOSE (vf_file);
}
if (full_vf_file_name)
RELEASE(full_vf_file_name);
}
return thisfont;
}
#define next_byte() (*((*start)++))
static int unsigned_byte (unsigned char **start, unsigned char *end)
{
int byte = 0;
if (*start < end)
byte = next_byte();
else
ERROR ("Premature end of DVI byte stream in VF font\n");
return byte;
}
static int32_t get_pkt_signed_num (unsigned char **start, unsigned char *end,
unsigned char num)
{
int32_t val = 0;
if (end-*start > num) {
val = next_byte();
if (val > 0x7f)
val -= 0x100;
switch (num) {
case 3: val = (val << 8) | next_byte();
case 2: val = (val << 8) | next_byte();
case 1: val = (val << 8) | next_byte();
default: break;
}
} else
ERROR ("Premature end of DVI byte stream in VF font\n");
return val;
}
static int32_t get_pkt_unsigned_num (unsigned char **start, unsigned char *end,
unsigned char num)
{
int32_t val = 0;
if (end-*start > num) {
val = next_byte();
switch (num) {
case 3: if (val > 0x7f)
val -= 0x100;
val = (val << 8) | next_byte();
case 2: val = (val << 8) | next_byte();
case 1: val = (val << 8) | next_byte();
default: break;
}
} else
ERROR ("Premature end of DVI byte stream in VF font\n");
return val;
}
static void vf_putrule (unsigned char **start, unsigned char *end, spt_t ptsize)
{
int32_t height = get_pkt_signed_num (start, end, 3);
int32_t width = get_pkt_signed_num (start, end, 3);
dvi_rule (sqxfw (ptsize, width), sqxfw (ptsize, height));
}
static void vf_setrule (unsigned char **start, unsigned char *end, spt_t ptsize)
{
int32_t height = get_pkt_signed_num (start, end, 3);
int32_t s_width = sqxfw (ptsize, get_pkt_signed_num (start, end, 3));
dvi_rule (s_width, sqxfw (ptsize, height));
dvi_right (s_width);
}
static void vf_fnt (int32_t font_id, unsigned long vf_font)
{
int i;
for (i=0; i<vf_fonts[vf_font].num_dev_fonts; i++) {
if (font_id == ((vf_fonts[vf_font].dev_fonts)[i]).font_id) {
break;
}
}
if (i < vf_fonts[vf_font].num_dev_fonts) { /* Font was found */
dvi_set_font ((vf_fonts[vf_font].dev_fonts[i]).dev_id);
} else {
fprintf (stderr, "Font_id: %d not found in VF\n", font_id);
}
}
/* identical to do_xxx in dvi.c */
static void vf_xxx (int32_t len, unsigned char **start, unsigned char *end)
{
if (*start <= end - len) {
unsigned char *buffer = NEW(len+1, unsigned char);
memcpy(buffer, *start, len);
buffer[len] = '\0';
{
unsigned char *p = buffer;
while (p < buffer+len && *p == ' ') p++;
/*
* Warning message from virtual font.
*/
if (!memcmp((char *)p, "Warning:", 8)) {
if (verbose)
WARN("VF:%s", p+8);
} else {
dvi_do_special(buffer, len);
}
}
RELEASE(buffer);
} else {
ERROR ("Premature end of DVI byte stream in VF font.");
}
*start += len;
return;
}
void vf_set_char(int32_t ch, int vf_font)
{
unsigned char opcode;
unsigned char *start, *end;
spt_t ptsize;
int default_font = -1;
if (vf_font < num_vf_fonts) {
/* Initialize to the first font or -1 if undefined */
ptsize = vf_fonts[vf_font].ptsize;
if (vf_fonts[vf_font].num_dev_fonts > 0)
default_font = ((vf_fonts[vf_font].dev_fonts)[0]).dev_id;
dvi_vf_init (default_font);
if (ch >= vf_fonts[vf_font].num_chars ||
!(start = (vf_fonts[vf_font].ch_pkt)[ch])) {
fprintf (stderr, "\nchar=0x%x(%d)\n", ch, ch);
fprintf (stderr, "Tried to set a nonexistent character in a virtual font");
start = end = NULL;
} else {
end = start + (vf_fonts[vf_font].pkt_len)[ch];
}
while (start && start < end) {
opcode = *(start++);
#ifdef DEBUG
fprintf (stderr, "VF opcode: %d", opcode);
if (isprint (opcode)) fprintf (stderr, " (\'%c\')\n", opcode);
else fprintf (stderr, "\n");
#endif
switch (opcode)
{
case SET1: case SET2: case SET3:
dvi_set (get_pkt_unsigned_num (&start, end, opcode-SET1));
break;
case SET4:
ERROR ("Multibyte (>24 bits) character in VF packet.\nI can't handle this!");
break;
case SET_RULE:
vf_setrule(&start, end, ptsize);
break;
case PUT1: case PUT2: case PUT3:
dvi_put (get_pkt_unsigned_num (&start, end, opcode-PUT1));
break;
case PUT4:
ERROR ("Multibyte (>24 bits) character in VF packet.\nI can't handle this!");
break;
case PUT_RULE:
vf_putrule(&start, end, ptsize);
break;
case NOP:
break;
case PUSH:
dvi_push();
break;
case POP:
dvi_pop();
break;
case RIGHT1: case RIGHT2: case RIGHT3: case RIGHT4:
dvi_right (sqxfw (ptsize, get_pkt_signed_num (&start, end, opcode-RIGHT1)));
break;
case W0:
dvi_w0();
break;
case W1: case W2: case W3: case W4:
dvi_w (sqxfw (ptsize, get_pkt_signed_num (&start, end, opcode-W1)));
break;
case X0:
dvi_x0();
break;
case X1: case X2: case X3: case X4:
dvi_x (sqxfw (ptsize, get_pkt_signed_num (&start, end, opcode-X1)));
case DOWN1: case DOWN2: case DOWN3: case DOWN4:
dvi_down (sqxfw (ptsize, get_pkt_signed_num (&start, end, opcode-DOWN1)));
break;
case Y0:
dvi_y0();
break;
case Y1: case Y2: case Y3: case Y4:
dvi_y (sqxfw (ptsize, get_pkt_signed_num (&start, end, opcode-Y1)));
break;
case Z0:
dvi_z0();
break;
case Z1: case Z2: case Z3: case Z4:
dvi_z (sqxfw (ptsize, get_pkt_signed_num (&start, end, opcode-Z1)));
break;
case FNT1: case FNT2: case FNT3: case FNT4:
vf_fnt (get_pkt_signed_num (&start, end, opcode-FNT1), vf_font);
break;
case XXX1: case XXX2: case XXX3: case XXX4:
{
int32_t len = get_pkt_unsigned_num (&start, end, opcode-XXX1);
if (len < 0)
WARN("VF: Special with %d bytes???", len);
else
vf_xxx (len, &start, end);
}
break;
case PTEXDIR:
dvi_dir (unsigned_byte (&start, end));
break;
default:
if (opcode <= SET_CHAR_127) {
dvi_set (opcode);
} else if (opcode >= FNT_NUM_0 && opcode <= FNT_NUM_63) {
vf_fnt (opcode - FNT_NUM_0, vf_font);
} else {
fprintf (stderr, "Unexpected opcode: %d\n", opcode);
ERROR ("Unexpected opcode in vf file\n");
}
}
}
dvi_vf_finish();
} else {
fprintf (stderr, "vf_set_char: font: %d", vf_font);
ERROR ("Font not loaded\n");
}
return;
}
void vf_close_all_fonts(void)
{
unsigned long i;
int j;
struct font_def *one_font;
for (i=0; i<num_vf_fonts; i++) {
/* Release the packet for each character */
if (vf_fonts[i].ch_pkt) {
for (j=0; j<vf_fonts[i].num_chars; j++) {
if ((vf_fonts[i].ch_pkt)[j] != NULL)
RELEASE ((vf_fonts[i].ch_pkt)[j]);
}
RELEASE (vf_fonts[i].ch_pkt);
}
if (vf_fonts[i].pkt_len)
RELEASE (vf_fonts[i].pkt_len);
if (vf_fonts[i].tex_name)
RELEASE (vf_fonts[i].tex_name);
/* Release each font record */
for (j=0; j<vf_fonts[i].num_dev_fonts; j++) {
one_font = &(vf_fonts[i].dev_fonts)[j];
RELEASE (one_font -> directory);
RELEASE (one_font -> name);
}
if (vf_fonts[i].dev_fonts != NULL)
RELEASE (vf_fonts[i].dev_fonts);
}
if (vf_fonts != NULL)
RELEASE (vf_fonts);
return;
}
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