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|
/* This is dvipdfmx, an eXtended version of dvipdfm by Mark A. Wicks.
Copyright (C) 2002-2018 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 <string.h>
#include "system.h"
#include "mem.h"
#include "mfileio.h"
#include "error.h"
#include "numbers.h"
#include "dpxconf.h"
#include "dpxutil.h"
#include "tfm.h"
#define TFM_FORMAT 1
#define OFM_FORMAT 2
#define FWBASE ((double) (1<<20))
#ifndef WITHOUT_ASCII_PTEX
/*
* ID is 9 for vertical JFM file.
*/
#define JFM_ID 11
#define JFMV_ID 9
#define IS_JFM(i) ((i) == JFM_ID || (i) == JFMV_ID)
#define CHARACTER_INDEX(i) ((i > 0x10FFFFUL ? 0x110000UL : i))
#else
#define CHARACTER_INDEX(i) ((i))
#endif
/*
* TFM Record structure:
* Multiple TFM's may be read in at once.
*/
struct tfm_font
{
#ifndef WITHOUT_ASCII_PTEX
int id;
int nt;
#endif /* !WITHOUT_ASCII_PTEX */
#ifndef WITHOUT_OMEGA
int32_t level;
#endif /* !WITHOUT_OMEGA */
uint32_t wlenfile;
uint32_t wlenheader;
uint32_t bc, ec;
uint32_t nwidths, nheights, ndepths;
uint32_t nitcor, nlig, nkern, nextens;
uint32_t nfonparm;
#ifndef WITHOUT_OMEGA
uint32_t fontdir;
uint32_t nco, ncw, npc;
#endif /* !WITHOUT_OMEGA */
fixword *header;
#ifndef WITHOUT_ASCII_PTEX
unsigned int *chartypes;
#endif /* !WITHOUT_ASCII_PTEX */
uint32_t *char_info;
unsigned short *width_index;
unsigned char *height_index;
unsigned char *depth_index;
fixword *width;
fixword *height;
fixword *depth;
};
static void
tfm_font_init (struct tfm_font *tfm)
{
tfm->header = NULL;
#ifndef WITHOUT_ASCII_PTEX
tfm->id = 0;
tfm->nt = 0;
tfm->chartypes = NULL;
#endif /* !WITHOUT_ASCII_PTEX */
#ifndef WITHOUT_OMEGA
tfm->level = 0;
tfm->fontdir = 0;
tfm->nco = tfm->ncw = tfm->npc = 0;
#endif
tfm->char_info = NULL;
tfm->width_index = NULL;
tfm->height_index = NULL;
tfm->depth_index = NULL;
tfm->width = tfm->height = tfm->depth = NULL;
}
static void
tfm_font_clear (struct tfm_font *tfm)
{
if (tfm) {
if (tfm->header) {
RELEASE(tfm->header);
tfm->header = NULL;
}
if (tfm->char_info) {
RELEASE(tfm->char_info);
tfm->char_info = NULL;
}
if (tfm->width) {
RELEASE(tfm->width);
tfm->width = NULL;
}
if (tfm->height) {
RELEASE(tfm->height);
tfm->height = NULL;
}
if (tfm->depth) {
RELEASE(tfm->depth);
tfm->depth = NULL;
}
#ifndef WITHOUT_ASCII_PTEX
if (tfm->chartypes) {
RELEASE(tfm->chartypes);
tfm->chartypes = NULL;
}
#endif /* !WITHOUT_ASCII_PTEX */
if (tfm->width_index) {
RELEASE(tfm->width_index);
tfm->width_index = NULL;
}
if (tfm->height_index) {
RELEASE(tfm->height_index);
tfm->height_index = NULL;
}
if (tfm->depth_index) {
RELEASE(tfm->depth_index);
tfm->depth_index = NULL;
}
}
}
struct coverage
{
int first_char;
int num_chars;
};
/*
* All characters in the same range have same metrics.
*/
struct range_map {
unsigned short num_coverages;
struct coverage *coverages;
unsigned short *indices;
};
/* Special case of num_coverages = 1 */
struct char_map
{
struct coverage coverage;
#ifndef WITHOUT_ASCII_PTEX
unsigned int *indices;
#else
unsigned short *indices;
#endif
};
static void
release_char_map (struct char_map *map)
{
if (map->indices)
RELEASE(map->indices);
map->indices = NULL;
RELEASE(map);
}
static void
release_range_map (struct range_map *map)
{
if (map->coverages)
RELEASE(map->coverages);
if (map->indices)
RELEASE(map->indices);
map->coverages = NULL;
map->indices = NULL;
RELEASE(map);
}
static int
lookup_char (const struct char_map *map, int charcode)
{
if (charcode >= map->coverage.first_char &&
charcode <= map->coverage.first_char + map->coverage.num_chars)
return map->indices[CHARACTER_INDEX(charcode - map->coverage.first_char)];
else
return -1;
}
static int
lookup_range (const struct range_map *map, int charcode)
{
int idx;
for (idx = map->num_coverages - 1; idx >= 0 &&
charcode >= map->coverages[idx].first_char; idx--) {
if (charcode <=
map->coverages[idx].first_char + map->coverages[idx].num_chars)
return map->indices[CHARACTER_INDEX(idx)];
}
return -1;
}
#define SOURCE_TYPE_TFM 0
#define SOURCE_TYPE_JFM 1
#define SOURCE_TYPE_OFM 2
#define MAPTYPE_NONE 0
#define MAPTYPE_CHAR 1
#define MAPTYPE_RANGE 2
#define FONT_DIR_HORIZ 0
#define FONT_DIR_VERT 1
struct font_metric
{
char *tex_name;
fixword designsize;
char *codingscheme;
int fontdir;
int firstchar, lastchar;
fixword *widths;
fixword *heights;
fixword *depths;
struct {
int type;
void *data;
} charmap;
int source;
};
static void
fm_init (struct font_metric *fm)
{
fm->tex_name = NULL;
fm->firstchar = 0;
fm->lastchar = 0;
fm->fontdir = FONT_DIR_HORIZ;
fm->codingscheme = NULL;
fm->designsize = 0;
fm->widths = NULL;
fm->heights = NULL;
fm->depths = NULL;
fm->charmap.type = MAPTYPE_NONE;
fm->charmap.data = NULL;
fm->source = SOURCE_TYPE_TFM;
}
static void
fm_clear (struct font_metric *fm)
{
if (fm) {
if (fm->tex_name)
RELEASE(fm->tex_name);
if (fm->widths)
RELEASE(fm->widths);
if (fm->heights)
RELEASE(fm->heights);
if (fm->depths)
RELEASE(fm->depths);
if (fm->codingscheme)
RELEASE(fm->codingscheme);
switch (fm->charmap.type) {
case MAPTYPE_CHAR:
release_char_map(fm->charmap.data);
break;
case MAPTYPE_RANGE:
release_range_map(fm->charmap.data);
break;
}
}
}
#ifndef MAX_FONTS
#define MAX_FONTS 16
#endif
struct font_metric *fms = NULL;
static unsigned numfms = 0, max_fms = 0;
static void
fms_need (unsigned n)
{
if (n > max_fms) {
max_fms = MAX(max_fms + MAX_FONTS, n);
fms = RENEW(fms, max_fms, struct font_metric);
}
}
static int
fread_fwords (fixword *words, int32_t nmemb, FILE *fp)
{
int i;
for (i = 0; i < nmemb; i++)
words[i] = get_signed_quad(fp);
return nmemb*4;
}
static int
fread_uquads (uint32_t *quads, int32_t nmemb, FILE *fp)
{
int i;
for (i = 0; i < nmemb; i++) {
quads[i] = get_unsigned_quad(fp);
}
return nmemb*4;
}
/*
* TFM and JFM
*/
static void
tfm_check_size (struct tfm_font *tfm, off_t tfm_file_size)
{
uint32_t expected_size = 6;
/* Removed the warning message caused by EC TFM metric files.
*
if (tfm->wlenfile != tfm_file_size / 4) {
WARN("TFM file size is %ld bytes but it says it is %ld bytes!",
tfm_file_size, tfm->wlenfile * 4);
if (tfm_file_size > tfm->wlenfile * 4) {
WARN("Proceeding nervously...");
} else {
ERROR("Can't proceed...");
}
}
*/
if ((int64_t)tfm_file_size < (int64_t)tfm->wlenfile * 4) {
ERROR("Can't proceed...");
}
expected_size += (tfm->ec - tfm->bc + 1);
expected_size += tfm->wlenheader;
expected_size += tfm->nwidths;
expected_size += tfm->nheights;
expected_size += tfm->ndepths;
expected_size += tfm->nitcor;
expected_size += tfm->nlig;
expected_size += tfm->nkern;
expected_size += tfm->nextens;
expected_size += tfm->nfonparm;
#ifndef WITHOUT_ASCII_PTEX
if (IS_JFM(tfm->id)) {
expected_size += tfm->nt + 1;
}
#endif /* !WITHOUT_ASCII_PTEX */
if (expected_size != tfm->wlenfile) {
WARN("TFM file size is expected to be %" PRId64 " bytes but it says it is %" PRId64 "bytes!",
(int64_t)expected_size * 4, (int64_t)tfm->wlenfile * 4);
if ((int64_t)tfm_file_size > (int64_t)expected_size *4) {
WARN("Proceeding nervously...");
} else {
ERROR("Can't proceed...");
}
}
}
static void
tfm_get_sizes (FILE *tfm_file, off_t tfm_file_size, struct tfm_font *tfm)
{
#ifndef WITHOUT_ASCII_PTEX
{
unsigned short first_hword;
/*
* The first half word of TFM/JFM is TFM ID for JFM or size of
* TFM file in word for TFM. TFM with 9*4 or 11*4 bytes is not
* expected to be a valid TFM. So, we always assume that TFMs
* starting with 00 09 or 00 0B is JFM.
*/
first_hword = get_unsigned_pair(tfm_file);
if (IS_JFM(first_hword)) {
tfm->id = first_hword;
tfm->nt = get_unsigned_pair(tfm_file);
tfm->wlenfile = get_unsigned_pair(tfm_file);
} else {
tfm->wlenfile = first_hword;
}
}
#else /* WITHOUT_ASCII_PTEX */
tfm->wlenfile = get_unsigned_pair(tfm_file);
#endif /* !WITHOUT_ASCII_PTEX */
tfm->wlenheader = get_unsigned_pair(tfm_file);
tfm->bc = get_unsigned_pair(tfm_file);
tfm->ec = get_unsigned_pair(tfm_file);
if (tfm->ec < tfm->bc) {
ERROR("TFM file error: ec(%u) < bc(%u) ???", tfm->ec, tfm->bc);
}
tfm->nwidths = get_unsigned_pair(tfm_file);
tfm->nheights = get_unsigned_pair(tfm_file);
tfm->ndepths = get_unsigned_pair(tfm_file);
tfm->nitcor = get_unsigned_pair(tfm_file);
tfm->nlig = get_unsigned_pair(tfm_file);
tfm->nkern = get_unsigned_pair(tfm_file);
tfm->nextens = get_unsigned_pair(tfm_file);
tfm->nfonparm = get_unsigned_pair(tfm_file);
tfm_check_size(tfm, tfm_file_size);
return;
}
#ifndef WITHOUT_ASCII_PTEX
static unsigned int
get_unsigned_triple_kanji(FILE *file)
{
unsigned int triple = get_unsigned_byte(file);
triple = (triple << 8) | get_unsigned_byte(file);
triple = triple | (get_unsigned_byte(file)<<16);
return triple;
}
static void
jfm_do_char_type_array (FILE *tfm_file, struct tfm_font *tfm)
{
unsigned int charcode;
unsigned short chartype;
unsigned int i;
tfm->chartypes = NEW(1114112, unsigned int);
for (i = 0; i < 1114112; i++) {
tfm->chartypes[i] = 0;
}
for (i = 0; i < tfm->nt; i++) {
/* support new JFM spec by texjporg */
charcode = get_unsigned_triple_kanji(tfm_file);
chartype = get_unsigned_byte(tfm_file);
tfm->chartypes[charcode] = chartype;
}
}
static void
jfm_make_charmap (struct font_metric *fm, struct tfm_font *tfm)
{
if (tfm->nt > 1) {
struct char_map *map;
int code;
fm->charmap.type = MAPTYPE_CHAR;
fm->charmap.data = map = NEW(1, struct char_map);
map->coverage.first_char = 0;
#ifndef WITHOUT_ASCII_PTEX
map->coverage.num_chars = 0x10FFFFL;
map->indices = NEW(0x110001L, unsigned int);
map->indices[0x110000L] = tfm->chartypes[0];
for (code = 0; code <= 0x10FFFFU; code++) {
#else
map->coverage.num_chars = 0xFFFFL;
map->indices = NEW(0x10000L, unsigned short);
for (code = 0; code <= 0xFFFFU; code++) {
#endif
map->indices[code] = tfm->chartypes[code];
}
} else {
struct range_map *map;
fm->charmap.type = MAPTYPE_RANGE;
fm->charmap.data = map = NEW(1, struct range_map);
map->num_coverages = 1;
map->coverages = NEW(map->num_coverages, struct coverage);
map->coverages[0].first_char = 0;
#ifndef WITHOUT_ASCII_PTEX
map->coverages[0].num_chars = 0x10FFFFL;
#else
map->coverages[0].num_chars = 0xFFFFL;
#endif
map->indices = NEW(1, unsigned short);
map->indices[0] = 0; /* Only default type used. */
}
}
#endif /* !WITHOUT_ASCII_PTEX */
static void
tfm_unpack_arrays (struct font_metric *fm, struct tfm_font *tfm)
{
uint32_t charinfo;
unsigned short width_index;
unsigned char height_index, depth_index;
int i;
fm->widths = NEW(256, fixword);
fm->heights = NEW(256, fixword);
fm->depths = NEW(256, fixword);
for (i = 0; i < 256; i++) {
fm->widths [i] = 0;
fm->heights[i] = 0;
fm->depths [i] = 0;
}
for (i = tfm->bc; i <= tfm->ec; i++ ) {
charinfo = tfm->char_info[i - tfm->bc];
width_index = (charinfo >> 24);
height_index = (charinfo >> 20) & 0xf;
depth_index = (charinfo >> 16) & 0xf;
fm->widths [i] = tfm->width [width_index];
fm->heights[i] = tfm->height[height_index];
fm->depths [i] = tfm->depth [depth_index];
}
return;
}
static int
sput_bigendian (char *s, int32_t v, int n)
{
int i;
for (i = n-1; i >= 0; i--) {
s[i] = (char) (v & 0xff);
v >>= 8;
}
return n;
}
static void
tfm_unpack_header (struct font_metric *fm, struct tfm_font *tfm)
{
if (tfm->wlenheader < 12) {
fm->codingscheme = NULL;
} else {
int i, len;
char *p;
len = (tfm->header[2] >> 24);
if (len < 0 || len > 39)
ERROR("Invalid TFM header.");
if (len > 0) {
fm->codingscheme = NEW(40, char);
p = fm->codingscheme;
p += sput_bigendian(p, tfm->header[2], 3);
for (i = 1; i <= len / 4; i++) {
p += sput_bigendian(p, tfm->header[2+i], 4);
}
fm->codingscheme[len] = '\0';
} else {
fm->codingscheme = NULL;
}
}
fm->designsize = tfm->header[1];
}
#ifndef WITHOUT_OMEGA
static void
ofm_check_size_one (struct tfm_font *tfm, off_t ofm_file_size)
{
uint32_t ofm_size = 14;
ofm_size += 2*(tfm->ec - tfm->bc + 1);
ofm_size += tfm->wlenheader;
ofm_size += tfm->nwidths;
ofm_size += tfm->nheights;
ofm_size += tfm->ndepths;
ofm_size += tfm->nitcor;
ofm_size += 2*(tfm->nlig);
ofm_size += tfm->nkern;
ofm_size += 2*(tfm->nextens);
ofm_size += tfm->nfonparm;
if (tfm->wlenfile != ofm_file_size / 4 ||
tfm->wlenfile != ofm_size) {
ERROR("OFM file problem. Table sizes don't agree.");
}
}
static void
ofm_get_sizes (FILE *ofm_file, off_t ofm_file_size, struct tfm_font *tfm)
{
tfm->level = get_signed_quad(ofm_file);
tfm->wlenfile = get_positive_quad(ofm_file, "OFM", "wlenfile");
tfm->wlenheader = get_positive_quad(ofm_file, "OFM", "wlenheader");
tfm->bc = get_positive_quad(ofm_file, "OFM", "bc");
tfm->ec = get_positive_quad(ofm_file, "OFM", "ec");
if (tfm->ec < tfm->bc) {
ERROR("OFM file error: ec(%u) < bc(%u) ???", tfm->ec, tfm->bc);
}
tfm->nwidths = get_positive_quad(ofm_file, "OFM", "nwidths");
tfm->nheights = get_positive_quad(ofm_file, "OFM", "nheights");
tfm->ndepths = get_positive_quad(ofm_file, "OFM", "ndepths");
tfm->nitcor = get_positive_quad(ofm_file, "OFM", "nitcor");
tfm->nlig = get_positive_quad(ofm_file, "OFM", "nlig");
tfm->nkern = get_positive_quad(ofm_file, "OFM", "nkern");
tfm->nextens = get_positive_quad(ofm_file, "OFM", "nextens");
tfm->nfonparm = get_positive_quad(ofm_file, "OFM", "nfonparm");
tfm->fontdir = get_positive_quad(ofm_file, "OFM", "fontdir");
if (tfm->fontdir) {
WARN("I may be interpreting a font direction incorrectly.");
}
if (tfm->level == 0) {
ofm_check_size_one(tfm, ofm_file_size);
} else if (tfm->level == 1) {
tfm->nco = get_positive_quad(ofm_file, "OFM", "nco");
tfm->ncw = get_positive_quad(ofm_file, "OFM", "nco");
tfm->npc = get_positive_quad(ofm_file, "OFM", "npc");
xseek_absolute(ofm_file, 4*(off_t)(tfm->nco - tfm->wlenheader), "OFM");
} else {
ERROR("Can't handle OFM files with level > 1");
}
return;
}
static void
ofm_do_char_info_zero (FILE *tfm_file, struct tfm_font *tfm)
{
uint32_t num_chars;
num_chars = tfm->ec - tfm->bc + 1;
if (num_chars != 0) {
uint32_t i;
tfm->width_index = NEW(num_chars, unsigned short);
tfm->height_index = NEW(num_chars, unsigned char);
tfm->depth_index = NEW(num_chars, unsigned char);
for (i = 0; i < num_chars; i++) {
tfm->width_index [i] = get_unsigned_pair(tfm_file);
tfm->height_index[i] = get_unsigned_byte(tfm_file);
tfm->depth_index [i] = get_unsigned_byte(tfm_file);
/* Ignore remaining quad */
skip_bytes(4, tfm_file);
}
}
}
static void
ofm_do_char_info_one (FILE *tfm_file, struct tfm_font *tfm)
{
uint32_t num_char_infos;
uint32_t num_chars;
num_char_infos = tfm->ncw / (3 + (tfm->npc / 2));
num_chars = tfm->ec - tfm ->bc + 1;
if (num_chars != 0) {
uint32_t i;
uint32_t char_infos_read;
tfm->width_index = NEW(num_chars, unsigned short);
tfm->height_index = NEW(num_chars, unsigned char);
tfm->depth_index = NEW(num_chars, unsigned char);
char_infos_read = 0;
for (i = 0; i < num_chars &&
char_infos_read < num_char_infos; i++) {
int repeats, j;
tfm->width_index [i] = get_unsigned_pair(tfm_file);
tfm->height_index[i] = get_unsigned_byte(tfm_file);
tfm->depth_index [i] = get_unsigned_byte(tfm_file);
/* Ignore next quad */
skip_bytes(4, tfm_file);
repeats = get_unsigned_pair(tfm_file);
/* Skip params */
for (j = 0; j < tfm->npc; j++) {
get_unsigned_pair(tfm_file);
}
/* Remove word padding if necessary */
if (ISEVEN(tfm->npc)){
get_unsigned_pair(tfm_file);
}
char_infos_read++;
if (i + repeats > num_chars) {
ERROR("Repeats causes number of characters to be exceeded.");
}
for (j = 0; j < repeats; j++) {
tfm->width_index [i+j+1] = tfm->width_index [i];
tfm->height_index[i+j+1] = tfm->height_index[i];
tfm->depth_index [i+j+1] = tfm->depth_index [i];
}
/* Skip ahead because we have already handled repeats */
i += repeats;
}
}
}
static void
ofm_unpack_arrays (struct font_metric *fm,
struct tfm_font *tfm, uint32_t num_chars)
{
int i;
fm->widths = NEW(tfm->bc + num_chars, fixword);
fm->heights = NEW(tfm->bc + num_chars, fixword);
fm->depths = NEW(tfm->bc + num_chars, fixword);
for (i = 0; i < num_chars; i++) {
fm->widths [tfm->bc + i] = tfm->width [ tfm->width_index [i] ];
fm->heights[tfm->bc + i] = tfm->height[ tfm->height_index[i] ];
fm->depths [tfm->bc + i] = tfm->depth [ tfm->depth_index [i] ];
}
}
static void
read_ofm (struct font_metric *fm, FILE *ofm_file, off_t ofm_file_size)
{
struct tfm_font tfm;
tfm_font_init(&tfm);
ofm_get_sizes(ofm_file, ofm_file_size, &tfm);
if (tfm.level < 0 || tfm.level > 1)
ERROR ("OFM level %d not supported.", tfm.level);
if (tfm.wlenheader > 0) {
tfm.header = NEW(tfm.wlenheader, fixword);
fread_fwords(tfm.header, tfm.wlenheader, ofm_file);
}
if (tfm.level == 0) {
ofm_do_char_info_zero(ofm_file, &tfm);
} else if (tfm.level == 1) {
ofm_do_char_info_one(ofm_file, &tfm);
}
if (tfm.nwidths > 0) {
tfm.width = NEW(tfm.nwidths, fixword);
fread_fwords(tfm.width, tfm.nwidths, ofm_file);
}
if (tfm.nheights > 0) {
tfm.height = NEW(tfm.nheights, fixword);
fread_fwords(tfm.height, tfm.nheights, ofm_file);
}
if (tfm.ndepths > 0) {
tfm.depth = NEW(tfm.ndepths, fixword);
fread_fwords(tfm.depth, tfm.ndepths, ofm_file);
}
ofm_unpack_arrays(fm, &tfm, tfm.ec - tfm.bc + 1);
tfm_unpack_header(fm, &tfm);
fm->firstchar = tfm.bc;
fm->lastchar = tfm.ec;
fm->source = SOURCE_TYPE_OFM;
tfm_font_clear(&tfm);
return;
}
#endif /* !WITHOUT_OMEGA */
static void
read_tfm (struct font_metric *fm, FILE *tfm_file, off_t tfm_file_size)
{
struct tfm_font tfm;
tfm_font_init(&tfm);
tfm_get_sizes(tfm_file, tfm_file_size, &tfm);
fm->firstchar = tfm.bc;
fm->lastchar = tfm.ec;
if (tfm.wlenheader > 0) {
tfm.header = NEW(tfm.wlenheader, fixword);
fread_fwords(tfm.header, tfm.wlenheader, tfm_file);
}
#ifndef WITHOUT_ASCII_PTEX
if (IS_JFM(tfm.id)) {
jfm_do_char_type_array(tfm_file, &tfm);
jfm_make_charmap(fm, &tfm);
fm->firstchar = 0;
fm->lastchar = 0x10FFFFL;
fm->fontdir = (tfm.id == JFMV_ID) ? FONT_DIR_VERT : FONT_DIR_HORIZ;
fm->source = SOURCE_TYPE_JFM;
}
#endif /* !WITHOUT_ASCII_PTEX */
if (tfm.ec - tfm.bc + 1 > 0) {
tfm.char_info = NEW(tfm.ec - tfm.bc + 1, uint32_t);
fread_uquads(tfm.char_info, tfm.ec - tfm.bc + 1, tfm_file);
}
if (tfm.nwidths > 0) {
tfm.width = NEW(tfm.nwidths, fixword);
fread_fwords(tfm.width, tfm.nwidths, tfm_file);
}
if (tfm.nheights > 0) {
tfm.height = NEW(tfm.nheights, fixword);
fread_fwords(tfm.height, tfm.nheights, tfm_file);
}
if (tfm.ndepths > 0) {
tfm.depth = NEW(tfm.ndepths, fixword);
fread_fwords(tfm.depth, tfm.ndepths, tfm_file);
}
tfm_unpack_arrays(fm, &tfm);
tfm_unpack_header(fm, &tfm);
tfm_font_clear(&tfm);
return;
}
int
tfm_open (const char *tfm_name, int must_exist)
{
FILE *tfm_file;
int i, format = TFM_FORMAT;
off_t tfm_file_size;
char *file_name = NULL;
for (i = 0; i < numfms; i++) {
if (!strcmp(tfm_name, fms[i].tex_name))
return i;
}
/*
* The procedure to search tfm or ofm files:
* 1. Search tfm file with the given name with the must_exist flag unset.
* 2. Search ofm file with the given name with the must_exist flag unset.
* 3. If not found and must_exist flag is set, try again to search
* tfm file with the must_exist flag set.
* 4. If not found and must_exist flag is not set, return -1.
*/
/*
* We first look for OFM and then TFM.
* The reason for this change is incompatibility introduced when dvipdfmx
* started to write correct glyph metrics to output PDF for CID fonts.
* I'll not explain this in detail... This change is mostly specific to
* Japanese support.
*/
#if 0
if ((file_name = kpse_find_file(tfm_name, kpse_tfm_format, 0))) {
format = TFM_FORMAT;
} else if ((file_name = kpse_find_file(tfm_name, kpse_ofm_format, 0))) {
format = OFM_FORMAT;
}
#endif
{
char *ofm_name, *suffix;
suffix = strrchr(tfm_name, '.');
if (!suffix || (strcmp(suffix, ".tfm") != 0 &&
strcmp(suffix, ".ofm") != 0)) {
ofm_name = NEW(strlen(tfm_name) + strlen(".ofm") + 1, char);
strcpy(ofm_name, tfm_name);
strcat(ofm_name, ".ofm");
} else {
ofm_name = NULL;
}
if (ofm_name &&
(file_name = kpse_find_file(ofm_name, kpse_ofm_format, 0)) != NULL) {
format = OFM_FORMAT;
} else if ((file_name =
kpse_find_file(tfm_name, kpse_tfm_format, 0)) != NULL) {
format = TFM_FORMAT;
} else if ((file_name =
kpse_find_file(tfm_name, kpse_ofm_format, 0)) != NULL) {
format = OFM_FORMAT;
}
if (ofm_name)
RELEASE(ofm_name);
}
/*
* In case that must_exist is set, MiKTeX returns always non-NULL value
* even if the tfm file is not found.
*/
if (file_name == NULL) {
if (must_exist) {
if ((file_name = kpse_find_file(tfm_name, kpse_tfm_format, 1)) != NULL)
format = TFM_FORMAT;
else {
ERROR("Unable to find TFM file \"%s\".", tfm_name);
}
} else {
return -1;
}
}
tfm_file = MFOPEN(file_name, FOPEN_RBIN_MODE);
if (!tfm_file) {
ERROR("Could not open specified TFM/OFM file \"%s\".", tfm_name);
}
if (dpx_conf.verbose_level > 0) {
if (format == TFM_FORMAT)
MESG("(TFM:%s", tfm_name);
else if (format == OFM_FORMAT)
MESG("(OFM:%s", tfm_name);
if (dpx_conf.verbose_level > 1)
MESG("[%s]", file_name);
}
RELEASE(file_name);
tfm_file_size = xfile_size (tfm_file, "TFM/OFM");
if (tfm_file_size > 0x1ffffffff)
ERROR("TFM/OFM file size exceeds 33-bit");
if (tfm_file_size < 24) {
ERROR("TFM/OFM file too small to be a valid file.");
}
fms_need(numfms + 1);
fm_init(fms + numfms);
#ifndef WITHOUT_OMEGA
if (format == OFM_FORMAT)
read_ofm(&fms[numfms], tfm_file, tfm_file_size);
else
#endif /* !WITHOUT_OMEGA */
{
read_tfm(&fms[numfms], tfm_file, tfm_file_size);
}
MFCLOSE(tfm_file);
fms[numfms].tex_name = NEW(strlen(tfm_name)+1, char);
strcpy(fms[numfms].tex_name, tfm_name);
if (dpx_conf.verbose_level > 0)
MESG(")");
return numfms++;
}
void
tfm_close_all (void)
{
int i;
if (fms) {
for (i = 0; i < numfms; i++) {
fm_clear(&(fms[i]));
}
RELEASE(fms);
}
}
#define CHECK_ID(n) do {\
if ((n) < 0 || (n) >= numfms)\
ERROR("TFM: Invalid TFM ID: %d", (n));\
} while (0)
fixword
tfm_get_fw_width (int font_id, int32_t ch)
{
struct font_metric *fm;
int idx = 0;
CHECK_ID(font_id);
fm = &(fms[font_id]);
if (ch >= fm->firstchar && ch <= fm->lastchar) {
switch (fm->charmap.type) {
case MAPTYPE_CHAR:
idx = lookup_char(fm->charmap.data, ch);
if (idx < 0)
ERROR("Invalid char: %ld\n", ch);
break;
case MAPTYPE_RANGE:
idx = lookup_range(fm->charmap.data, ch);
if (idx < 0)
ERROR("Invalid char: %ld\n", ch);
break;
default:
idx = ch;
}
} else {
ERROR("Invalid char: %ld\n", ch);
}
return fm->widths[idx];
}
fixword
tfm_get_fw_height (int font_id, int32_t ch)
{
struct font_metric *fm;
int idx = 0;
CHECK_ID(font_id);
fm = &(fms[font_id]);
if (ch >= fm->firstchar && ch <= fm->lastchar) {
switch (fm->charmap.type) {
case MAPTYPE_CHAR:
idx = lookup_char(fm->charmap.data, ch);
if (idx < 0)
ERROR("Invalid char: %ld\n", ch);
break;
case MAPTYPE_RANGE:
idx = lookup_range(fm->charmap.data, ch);
if (idx < 0)
ERROR("Invalid char: %ld\n", ch);
break;
default:
idx = ch;
}
} else {
ERROR("Invalid char: %ld\n", ch);
}
return fm->heights[idx];
}
fixword
tfm_get_fw_depth (int font_id, int32_t ch)
{
struct font_metric *fm;
int idx = 0;
CHECK_ID(font_id);
fm = &(fms[font_id]);
if (ch >= fm->firstchar && ch <= fm->lastchar) {
switch (fm->charmap.type) {
case MAPTYPE_CHAR:
idx = lookup_char(fm->charmap.data, ch);
if (idx < 0)
ERROR("Invalid char: %ld\n", ch);
break;
case MAPTYPE_RANGE:
idx = lookup_range(fm->charmap.data, ch);
if (idx < 0)
ERROR("Invalid char: %ld\n", ch);
break;
default:
idx = ch;
}
} else {
ERROR("Invalid char: %ld\n", ch);
}
return fm->depths[idx];
}
/*
* tfm_get_width returns the width of the font
* as a (double) fraction of the design size.
*/
double
tfm_get_width (int font_id, int32_t ch)
{
return ((double) tfm_get_fw_width(font_id, ch)/FWBASE);
}
#if 0
double
tfm_get_height (int font_id, int32_t ch)
{
return ((double) tfm_get_fw_height(font_id, ch)/FWBASE);
}
double
tfm_get_depth (int font_id, Sint32_t ch)
{
return ((double) tfm_get_fw_depth(font_id, ch)/FWBASE);
}
#endif
/* tfm_string_xxx() do not work for OFM... */
fixword
tfm_string_width (int font_id, const unsigned char *s, unsigned len)
{
fixword result = 0;
struct font_metric *fm;
unsigned i;
CHECK_ID(font_id);
fm = &(fms[font_id]);
#ifndef WITHOUT_ASCII_PTEX
if (fm->source == SOURCE_TYPE_JFM) {
for (i = 0; i < len/2; i++) {
int32_t ch;
ch = (s[2*i] << 8)|s[2*i+1];
result += tfm_get_fw_width(font_id, ch);
}
} else
#endif
for (i = 0; i < len; i++) {
result += tfm_get_fw_width(font_id, s[i]);
}
return result;
}
#if 0
fixword
tfm_string_depth (int font_id, const unsigned char *s, unsigned len)
{
fixword result = 0;
struct font_metric *fm;
unsigned i;
CHECK_ID(font_id);
fm = &(fms[font_id]);
#ifndef WITHOUT_ASCII_PTEX
if (fm->source == SOURCE_TYPE_JFM) {
for (i = 0; i < len/2; i++) {
int32_t ch;
ch = (s[2*i] << 8)|s[2*i+1];
result += tfm_get_fw_depth(font_id, ch);
}
} else
#endif
for (i = 0; i < len; i++) {
result = MAX(result, tfm_get_fw_depth(font_id, s[i]));
}
return result;
}
fixword
tfm_string_height (int font_id, const unsigned char *s, unsigned len)
{
fixword result = 0;
struct font_metric *fm;
unsigned i;
CHECK_ID(font_id);
fm = &(fms[font_id]);
#ifndef WITHOUT_ASCII_PTEX
if (fm->source == SOURCE_TYPE_JFM) {
for (i = 0; i < len/2; i++) {
int32_t ch;
ch = (s[2*i] << 8)|s[2*i+1];
result += tfm_get_fw_height(font_id, ch);
}
} else
#endif
for (i = 0; i < len; i++) {
result = MAX(result, tfm_get_fw_height(font_id, s[i]));
}
return result;
}
#endif
double
tfm_get_design_size (int font_id)
{
CHECK_ID(font_id);
return (double) (fms[font_id].designsize)/FWBASE*(72.0/72.27);
}
#if 0
char *
tfm_get_codingscheme (int font_id)
{
CHECK_ID(font_id);
return fms[font_id].codingscheme;
}
#ifndef WITHOUT_ASCII_PTEX
/* Vertical version of JFM */
int
tfm_is_vert (int font_id)
{
CHECK_ID(font_id);
return (fms[font_id].fontdir == FONT_DIR_VERT) ? 1 : 0;
}
#else /* WITHOUT_ASCII_PTEX */
int
tfm_is_vert (int font_id)
{
return 0;
}
#endif /* !WITHOUT_ASCII_PTEX */
#endif
#ifndef WITHOUT_ASCII_PTEX
int
tfm_is_jfm (int font_id)
{
CHECK_ID(font_id);
return (fms[font_id].source == SOURCE_TYPE_JFM) ? 1 : 0;
}
#else /* WITHOUT_ASCII_PTEX */
int
tfm_is_jfm (int font_id)
{
return 0;
}
#endif /* !WITHOUT_ASCII_PTEX */
int
tfm_exists (const char *tfm_name)
{
char *fullname;
fullname = kpse_find_file(tfm_name, kpse_ofm_format, 0);
if (fullname) {
RELEASE(fullname);
return 1;
}
fullname = kpse_find_file(tfm_name, kpse_tfm_format, 0);
if (fullname) {
RELEASE(fullname);
return 1;
}
return 0;
}
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