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cidtype0.c
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cidtype0.c
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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.
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.
*/
/*
* CID-Keyed Font support:
*
* Only CFF/OpenType CID-Keyed Font with Type 2 charstrings is supported.
*
*/
#include "libtexpdf.h"
#include "numbers.h"
#include "mem.h"
#include "error.h"
#include "dpxfile.h"
#include "pdfobj.h"
/* pseudo unique tag */
#include "pdffont.h"
/* Font info. from OpenType tables */
#include "sfnt.h"
#include "tt_aux.h"
/* Metrics */
#include "tt_table.h"
#include "cff_types.h"
#include "cff_limits.h"
#include "cff.h"
#include "cff_dict.h"
#include "cs_type2.h"
/* typedef CID in cmap.h */
#include "cmap.h"
#include "type0.h"
#include "cid.h"
#include "cid_p.h"
#include "cidtype0.h"
/* Type1 --> CFF CIDFont */
#include "unicode.h"
#include "t1_load.h"
#include "t1_char.h"
#include "agl.h"
#include "cmap.h"
#include "cmap_write.h"
#include "fontmap.h"
static int verbose = 0;
static long opt_flags = 0;
void
CIDFont_type0_set_verbose (void)
{
verbose++;
}
void
CIDFont_type0_set_flags (long flags)
{
opt_flags = flags;
}
/*
* PDF Reference 3rd. ed., p.340, "Glyph Metrics in CID Fonts".
*/
#ifndef PDFUNIT
#define PDFUNIT(v) (ROUND((1000.0*(v))/(head->unitsPerEm),1))
#endif
static void
add_CIDHMetrics (pdf_obj *fontdict,
unsigned char *CIDToGIDMap, unsigned short last_cid,
struct tt_maxp_table *maxp,
struct tt_head_table *head, struct tt_longMetrics *hmtx)
{
pdf_obj *w_array, *an_array = NULL;
long cid, start = 0, prev = 0;
double defaultAdvanceWidth;
int empty = 1;
defaultAdvanceWidth = PDFUNIT(hmtx[0].advance);
/*
* We alway use format:
* c [w_1 w_2 ... w_n]
*/
w_array = texpdf_new_array();
for (cid = 0; cid <= last_cid; cid++) {
USHORT gid;
double advanceWidth;
gid = CIDToGIDMap ? ((CIDToGIDMap[2*cid] << 8)|CIDToGIDMap[2*cid+1]) : cid;
if (gid >= maxp->numGlyphs || (cid != 0 && gid == 0))
continue;
advanceWidth = PDFUNIT(hmtx[gid].advance);
if (advanceWidth == defaultAdvanceWidth) {
if (an_array) {
texpdf_add_array(w_array, texpdf_new_number(start));
texpdf_add_array(w_array, an_array);
an_array = NULL;
empty = 0;
}
} else {
if (cid != prev + 1 && an_array) {
texpdf_add_array(w_array, texpdf_new_number(start));
texpdf_add_array(w_array, an_array);
an_array = NULL;
empty = 0;
}
if (an_array == NULL) {
an_array = texpdf_new_array();
start = cid;
}
texpdf_add_array(an_array, texpdf_new_number(advanceWidth));
prev = cid;
}
}
if (an_array) {
texpdf_add_array(w_array, texpdf_new_number(start));
texpdf_add_array(w_array, an_array);
empty = 0;
}
/*
* We always write DW for older MacOS X's preview app.
* PDF Reference 2nd. ed, wrongly described default value of DW as 0, and
* MacOS X's (up to 10.2.8) preview app. implements this wrong description.
*/
texpdf_add_dict(fontdict,
texpdf_new_name("DW"),
texpdf_new_number(defaultAdvanceWidth));
if (!empty) {
texpdf_add_dict(fontdict,
texpdf_new_name("W"),
texpdf_ref_obj(w_array));
}
texpdf_release_obj(w_array);
return;
}
static void
add_CIDVMetrics (sfnt *sfont, pdf_obj *fontdict,
unsigned char *CIDToGIDMap, unsigned short last_cid,
struct tt_maxp_table *maxp,
struct tt_head_table *head, struct tt_longMetrics *hmtx)
{
pdf_obj *w2_array, *an_array = NULL;
long cid;
#if 0
long prev = 0, start = 0;
#endif
struct tt_VORG_table *vorg;
struct tt_vhea_table *vhea = NULL;
struct tt_longMetrics *vmtx = NULL;
double defaultAdvanceHeight, defaultVertOriginY;
int empty = 1;
/*
* No accurate vertical metrics can be obtained by simple way if the
* font does not have VORG table. Only CJK fonts may have VORG.
*/
if (sfnt_find_table_pos(sfont, "VORG") <= 0)
return;
vorg = tt_read_VORG_table(sfont);
defaultVertOriginY = PDFUNIT(vorg->defaultVertOriginY);
if (sfnt_find_table_pos(sfont, "vhea") > 0)
vhea = tt_read_vhea_table(sfont);
if (vhea && sfnt_find_table_pos(sfont, "vmtx") > 0) {
sfnt_locate_table(sfont, "vmtx");
vmtx = tt_read_longMetrics(sfont, maxp->numGlyphs, vhea->numOfLongVerMetrics, vhea->numOfExSideBearings);
}
if (sfnt_find_table_pos(sfont, "OS/2") <= 0) {
struct tt_os2__table *os2;
/* OpenType font must have OS/2 table. */
os2 = tt_read_os2__table(sfont);
defaultVertOriginY = PDFUNIT(os2->sTypoAscender);
defaultAdvanceHeight = PDFUNIT(os2->sTypoAscender - os2->sTypoDescender);
RELEASE(os2);
} else {
/* Some TrueType fonts used in Macintosh does not have OS/2 table. */
defaultAdvanceHeight = 1000;
}
w2_array = texpdf_new_array();
for (cid = 0; cid <= last_cid; cid++) {
USHORT i, gid;
double advanceHeight, vertOriginX, vertOriginY;
gid = CIDToGIDMap ? ((CIDToGIDMap[2*cid] << 8)|CIDToGIDMap[2*cid+1]) : cid;
if (gid >= maxp->numGlyphs || (cid != 0 && gid == 0))
continue;
advanceHeight = vmtx ? PDFUNIT(vmtx[gid].advance) : defaultAdvanceHeight;
vertOriginX = PDFUNIT(hmtx[gid].advance*0.5);
vertOriginY = defaultVertOriginY;
for (i = 0;
i < vorg->numVertOriginYMetrics && gid > vorg->vertOriginYMetrics[i].glyphIndex;
i++) {
if (gid == vorg->vertOriginYMetrics[i].glyphIndex)
vertOriginY = PDFUNIT(vorg->vertOriginYMetrics[i].vertOriginY);
}
#if 0
/*
* c [w1_1y v_1x v_1y w1_2y v_2x v_2y ...]
* Not working... Why?
* Acrobat Reader:
* Wrong rendering, interpretation of position vector is wrong.
* Xpdf and gs: ignores W2?
*/
if (vertOriginY == defaultVertOriginY &&
advanceHeight == defaultAdvanceHeight) {
if (an_array) {
texpdf_add_array(w2_array, texpdf_new_number(start));
texpdf_add_array(w2_array, an_array);
an_array = NULL;
empty = 0;
}
} else {
if (cid != prev + 1 && an_array) {
texpdf_add_array(w2_array, texpdf_new_number(start));
texpdf_add_array(w2_array, an_array);
an_array = NULL;
empty = 0;
}
if (an_array == NULL) {
an_array = texpdf_new_array();
start = cid;
}
texpdf_add_array(an_array, texpdf_new_number(-advanceHeight));
texpdf_add_array(an_array, texpdf_new_number(vertOriginX));
texpdf_add_array(an_array, texpdf_new_number(vertOriginY));
prev = cid;
}
#else
/*
* c_first c_last w1_y v_x v_y
* This form may hit Acrobat's implementation limit of array element size, 8192.
* AFPL GhostScript 8.11 stops with rangecheck error with this. Maybe GS's bug?
*/
if (vertOriginY != defaultVertOriginY ||
advanceHeight != defaultAdvanceHeight) {
texpdf_add_array(w2_array, texpdf_new_number(cid));
texpdf_add_array(w2_array, texpdf_new_number(cid));
texpdf_add_array(w2_array, texpdf_new_number(-advanceHeight));
texpdf_add_array(w2_array, texpdf_new_number(vertOriginX));
texpdf_add_array(w2_array, texpdf_new_number(vertOriginY));
empty = 0;
}
#endif
}
#if 0
if (an_array) {
texpdf_add_array(w2_array, texpdf_new_number(start));
texpdf_add_array(w2_array, an_array);
empty = 0;
}
#endif
if (defaultVertOriginY != 880 || defaultAdvanceHeight != 1000) {
an_array = texpdf_new_array();
texpdf_add_array(an_array, texpdf_new_number(defaultVertOriginY));
texpdf_add_array(an_array, texpdf_new_number(-defaultAdvanceHeight));
texpdf_add_dict(fontdict, texpdf_new_name ("DW2"), an_array);
}
if (!empty) {
texpdf_add_dict(fontdict,
texpdf_new_name("W2"), texpdf_ref_obj(w2_array));
}
texpdf_release_obj(w2_array);
if (vorg->vertOriginYMetrics)
RELEASE(vorg->vertOriginYMetrics);
RELEASE(vorg);
if (vmtx)
RELEASE(vmtx);
if (vhea)
RELEASE(vhea);
return;
}
static void
add_CIDMetrics (sfnt *sfont, pdf_obj *fontdict,
unsigned char *CIDToGIDMap, unsigned short last_cid, int need_vmetrics)
{
struct tt_longMetrics *hmtx;
struct tt_head_table *head;
struct tt_hhea_table *hhea;
struct tt_maxp_table *maxp;
/*
* Read head, hhea, maxp:
*
* unitsPerEm --> head
* numHMetrics --> hhea
* numGlyphs --> maxp
*/
head = tt_read_head_table(sfont);
maxp = tt_read_maxp_table(sfont);
hhea = tt_read_hhea_table(sfont);
sfnt_locate_table(sfont, "hmtx");
hmtx = tt_read_longMetrics(sfont, maxp->numGlyphs, hhea->numOfLongHorMetrics, hhea->numOfExSideBearings);
add_CIDHMetrics(fontdict, CIDToGIDMap, last_cid, maxp, head, hmtx);
if (need_vmetrics)
add_CIDVMetrics(sfont, fontdict, CIDToGIDMap, last_cid, maxp, head, hmtx);
RELEASE(hmtx);
RELEASE(hhea);
RELEASE(maxp);
RELEASE(head);
return;
}
/*
* Create an instance of embeddable font.
*/
static long
write_fontfile (CIDFont *font, cff_font *cffont)
{
cff_index *topdict, *fdarray, *private;
unsigned char *dest;
long destlen = 0, i, size;
long offset, topdict_offset, fdarray_offset;
/* DICT sizes (offset set to long int) */
topdict = cff_new_index(1);
fdarray = cff_new_index(cffont->num_fds);
private = cff_new_index(cffont->num_fds);
cff_dict_remove(cffont->topdict, "UniqueID");
cff_dict_remove(cffont->topdict, "XUID");
cff_dict_remove(cffont->topdict, "Private"); /* some bad font may have */
cff_dict_remove(cffont->topdict, "Encoding"); /* some bad font may have */
topdict->offset[1] = cff_dict_pack(cffont->topdict,
(card8 *) work_buffer,
WORK_BUFFER_SIZE) + 1;
for (i = 0;i < cffont->num_fds; i++) {
size = 0;
if (cffont->private && cffont->private[i]) {
size = cff_dict_pack(cffont->private[i],
(card8 *) work_buffer, WORK_BUFFER_SIZE);
if (size < 1) { /* Private had contained only Subr */
cff_dict_remove(cffont->fdarray[i], "Private");
}
}
(private->offset)[i+1] = (private->offset)[i] + size;
(fdarray->offset)[i+1] = (fdarray->offset)[i] +
cff_dict_pack(cffont->fdarray[i],
(card8 *) work_buffer, WORK_BUFFER_SIZE);
}
destlen = 4; /* header size */
destlen += cff_set_name(cffont, font->fontname);
destlen += cff_index_size(topdict);
destlen += cff_index_size(cffont->string);
destlen += cff_index_size(cffont->gsubr);
destlen += (cffont->charsets->num_entries) * 2 + 1; /* charset format 0 */
destlen += (cffont->fdselect->num_entries) * 3 + 5; /* fdselect format 3 */
destlen += cff_index_size(cffont->cstrings);
destlen += cff_index_size(fdarray);
destlen += private->offset[private->count] - 1; /* Private is not INDEX */
dest = NEW(destlen, card8);
offset = 0;
/* Header */
offset += cff_put_header(cffont, dest + offset, destlen - offset);
/* Name */
offset += cff_pack_index(cffont->name, dest + offset, destlen - offset);
/* Top DICT */
topdict_offset = offset;
offset += cff_index_size(topdict);
/* Strings */
offset += cff_pack_index(cffont->string, dest + offset, destlen - offset);
/* Global Subrs */
offset += cff_pack_index(cffont->gsubr, dest + offset, destlen - offset);
/* charset */
cff_dict_set(cffont->topdict, "charset", 0, offset);
offset += cff_pack_charsets(cffont, dest + offset, destlen - offset);
/* FDSelect */
cff_dict_set(cffont->topdict, "FDSelect", 0, offset);
offset += cff_pack_fdselect(cffont, dest + offset, destlen - offset);
/* CharStrings */
cff_dict_set(cffont->topdict, "CharStrings", 0, offset);
offset += cff_pack_index(cffont->cstrings,
dest + offset, cff_index_size(cffont->cstrings));
cff_release_index(cffont->cstrings);
cffont->cstrings = NULL; /* Charstrings cosumes huge memory */
/* FDArray and Private */
cff_dict_set(cffont->topdict, "FDArray", 0, offset);
fdarray_offset = offset;
offset += cff_index_size(fdarray);
fdarray->data = NEW(fdarray->offset[fdarray->count] - 1, card8);
for (i = 0; i < cffont->num_fds; i++) {
size = private->offset[i+1] - private->offset[i];
if (cffont->private[i] && size > 0) {
cff_dict_pack(cffont->private[i], dest + offset, size);
cff_dict_set(cffont->fdarray[i], "Private", 0, size);
cff_dict_set(cffont->fdarray[i], "Private", 1, offset);
}
cff_dict_pack(cffont->fdarray[i],
fdarray->data + (fdarray->offset)[i] - 1,
fdarray->offset[fdarray->count] - 1);
offset += size;
}
cff_pack_index(fdarray, dest + fdarray_offset, cff_index_size(fdarray));
cff_release_index(fdarray);
cff_release_index(private);
/* Finally Top DICT */
topdict->data = NEW(topdict->offset[topdict->count] - 1, card8);
cff_dict_pack(cffont->topdict,
topdict->data, topdict->offset[topdict->count] - 1);
cff_pack_index(topdict, dest + topdict_offset, cff_index_size(topdict));
cff_release_index(topdict);
/*
* FontFile
*/
{
pdf_obj *fontfile, *stream_dict;
fontfile = texpdf_new_stream(STREAM_COMPRESS);
stream_dict = texpdf_stream_dict(fontfile);
texpdf_add_dict(font->descriptor,
texpdf_new_name("FontFile3"),
texpdf_ref_obj (fontfile));
texpdf_add_dict(stream_dict,
texpdf_new_name("Subtype"),
texpdf_new_name("CIDFontType0C"));
texpdf_add_stream(fontfile, (char *) dest, offset);
texpdf_release_obj(fontfile);
RELEASE(dest);
}
return destlen;
}
static char *
CIDFont_type0_get_used_chars(CIDFont *font) {
int parent_id;
char *used_chars;
if ((parent_id = CIDFont_get_parent_id(font, 0)) < 0 &&
(parent_id = CIDFont_get_parent_id(font, 1)) < 0)
ERROR("No parent Type 0 font !");
used_chars = Type0Font_get_usedchars(Type0Font_cache_get(parent_id));
if (!used_chars)
ERROR("Unexpected error: Font not actually used???");
return used_chars;
}
typedef struct
{
FILE *fp;
sfnt *sfont;
cff_font *cffont;
} CIDType0Info;
typedef enum {
CID_OPEN_ERROR_NO_ERROR = 0,
CID_OPEN_ERROR_CANNOT_OPEN_FILE = -1,
CID_OPEN_ERROR_NOT_SFNT_FONT = -2,
CID_OPEN_ERROR_NO_CFF_TABLE = -3,
CID_OPEN_ERROR_CANNOT_OPEN_CFF_FONT = -4,
CID_OPEN_ERROR_NOT_CIDFONT = -5,
CID_OPEN_ERROR_IS_CIDFONT = -6,
} CIDType0Error;
static void
CIDType0Error_Show (CIDType0Error error, const char *name)
{
switch (error) {
case CID_OPEN_ERROR_CANNOT_OPEN_FILE:
ERROR("Could not open OpenType font file: %s", name);
case CID_OPEN_ERROR_NOT_SFNT_FONT:
ERROR("Could not open SFNT font file: %s", name);
case CID_OPEN_ERROR_NO_CFF_TABLE:
ERROR("Not a CFF/OpenType font: %s", name);
case CID_OPEN_ERROR_CANNOT_OPEN_CFF_FONT:
ERROR("Could not open CFF font: %s", name);
case CID_OPEN_ERROR_NOT_CIDFONT:
ERROR("Not a CIDFont: %s", name);
case CID_OPEN_ERROR_IS_CIDFONT:
ERROR("Should not be a CIDFont: %s", name);
default:
break;
}
}
static void
CIDFontInfo_init (CIDType0Info *info)
{
memset(info, 0, sizeof(CIDType0Info));
}
static void
CIDFontInfo_close (CIDType0Info *info)
{
if (info->cffont)
cff_close(info->cffont);
if (info->sfont)
sfnt_close(info->sfont);
if (info->fp)
DPXFCLOSE(info->fp);
CIDFontInfo_init(info);
}
static CIDType0Error
CIDFont_type0_try_open (const char *name,
int index,
int required_cid,
CIDType0Info *info)
{
unsigned long offset = 0;
int is_cid;
CIDFontInfo_init(info);
info->fp = DPXFOPEN(name, DPX_RES_TYPE_OTFONT);
if (!info->fp) {
info->fp = DPXFOPEN(name, DPX_RES_TYPE_TTFONT);
if (!info->fp)
return CID_OPEN_ERROR_CANNOT_OPEN_FILE;
}
info->sfont = sfnt_open(info->fp);
if (!info->sfont)
return CID_OPEN_ERROR_NOT_SFNT_FONT;
if (info->sfont->type == SFNT_TYPE_TTC)
offset = ttc_read_offset(info->sfont, index);
if ((info->sfont->type != SFNT_TYPE_TTC &&
info->sfont->type != SFNT_TYPE_POSTSCRIPT) ||
sfnt_read_table_directory(info->sfont, offset) < 0 ||
(offset = sfnt_find_table_pos(info->sfont, "CFF ")) == 0) {
CIDFontInfo_close(info);
return CID_OPEN_ERROR_NO_CFF_TABLE;
}
info->cffont = cff_open(info->sfont->stream, offset, 0);
if (!info->cffont)
return CID_OPEN_ERROR_CANNOT_OPEN_CFF_FONT;
is_cid = info->cffont->flag & FONTTYPE_CIDFONT;
if (required_cid != is_cid) {
CIDFontInfo_close(info);
return required_cid ? CID_OPEN_ERROR_NOT_CIDFONT
: CID_OPEN_ERROR_IS_CIDFONT;
}
return CID_OPEN_ERROR_NO_ERROR;
}
static void
CIDFont_type0_add_CIDSet(CIDFont *font, char *used_chars, card16 last_cid) {
/*
* CIDSet:
* Length of CIDSet stream is not clear. Must be 8192 bytes long?
*/
pdf_obj *cidset;
cidset = texpdf_new_stream(STREAM_COMPRESS);
texpdf_add_stream(cidset, used_chars, (last_cid / 8) + 1);
texpdf_add_dict(font->descriptor,
texpdf_new_name("CIDSet"), texpdf_ref_obj(cidset));
texpdf_release_obj(cidset);
}
void
CIDFont_type0_dofont (CIDFont *font)
{
cff_font *cffont;
cff_index *charstrings, *idx;
cff_charsets *charset = NULL;
cff_fdselect *fdselect = NULL;
long charstring_len, max_len;
long destlen = 0;
long size, offset = 0;
card8 *data;
card16 num_glyphs = 0, gid;
long cid;
card16 cs_count, last_cid = 0;
int fd, prev_fd;
char *used_chars;
unsigned char *CIDToGIDMap = NULL;
CIDType0Error error;
CIDType0Info info;
ASSERT(font);
if (!font->indirect)
return;
texpdf_add_dict(font->fontdict,
texpdf_new_name("FontDescriptor"),
texpdf_ref_obj (font->descriptor));
if (CIDFont_is_BaseFont(font))
return;
else if (!CIDFont_get_embedding(font) &&
(opt_flags & CIDFONT_FORCE_FIXEDPITCH)) {
/* No metrics needed. */
texpdf_add_dict(font->fontdict,
texpdf_new_name("DW"), texpdf_new_number(1000.0));
return;
}
used_chars = CIDFont_type0_get_used_chars(font);
error = CIDFont_type0_try_open(font->ident, CIDFont_get_opt_index(font),
1, &info);
if (error != CID_OPEN_ERROR_NO_ERROR) {
CIDType0Error_Show(error, font->ident);
return;
}
cffont = info.cffont;
cff_read_charsets(cffont);
/*
* DW, W, DW2 and W2:
* Those values are obtained from OpenType table (not TFM).
*/
if (opt_flags & CIDFONT_FORCE_FIXEDPITCH) {
texpdf_add_dict(font->fontdict,
texpdf_new_name("DW"), texpdf_new_number(1000.0));
} else {
long cid_count;
if (cff_dict_known(cffont->topdict, "CIDCount")) {
cid_count = (long) cff_dict_get(cffont->topdict, "CIDCount", 0);
} else {
cid_count = CID_MAX + 1;
}
CIDToGIDMap = NEW(2 * cid_count, unsigned char);
memset(CIDToGIDMap, 0, 2 * cid_count);
add_to_used_chars2(used_chars, 0); /* .notdef */
for (cid = 0; cid <= CID_MAX; cid++) {
if (is_used_char2(used_chars, cid)) {
gid = cff_charsets_lookup(cffont, (card16)cid);
if (cid != 0 && gid == 0) {
WARN("Glyph for CID %u missing in font \"%s\".", (CID) cid, font->ident);
used_chars[cid/8] &= ~(1 << (7 - (cid % 8)));
continue;
}
CIDToGIDMap[2*cid] = (gid >> 8) & 0xff;
CIDToGIDMap[2*cid+1] = gid & 0xff;
last_cid = cid;
num_glyphs++;
}
}
add_CIDMetrics(info.sfont, font->fontdict, CIDToGIDMap, last_cid,
((CIDFont_get_parent_id(font, 1) < 0) ? 0 : 1));
}
if (!CIDFont_get_embedding(font)) {
RELEASE(CIDToGIDMap);
CIDFontInfo_close(&info);
return;
}
/*
* Embed font subset.
*/
cff_read_fdselect(cffont);
cff_read_fdarray(cffont);
cff_read_private(cffont);
cff_read_subrs(cffont);
offset = (long) cff_dict_get(cffont->topdict, "CharStrings", 0);
cff_seek_set(cffont, offset);
idx = cff_get_index_header(cffont);
/* offset is now absolute offset ... bad */
offset = cff_tell(cffont);
if ((cs_count = idx->count) < 2) {
ERROR("No valid charstring data found.");
}
/* New Charsets data */
charset = NEW(1, cff_charsets);
charset->format = 0;
charset->num_entries = 0;
charset->data.glyphs = NEW(num_glyphs, s_SID);
/* New FDSelect data */
fdselect = NEW(1, cff_fdselect);
fdselect->format = 3;
fdselect->num_entries = 0;
fdselect->data.ranges = NEW(num_glyphs, cff_range3);
/* New CharStrings INDEX */
charstrings = cff_new_index((card16)(num_glyphs+1));
max_len = 2 * CS_STR_LEN_MAX;
charstrings->data = NEW(max_len, card8);
charstring_len = 0;
/*
* TODO: Re-assign FD number.
*/
prev_fd = -1; gid = 0;
data = NEW(CS_STR_LEN_MAX, card8);
for (cid = 0; cid <= last_cid; cid++) {
unsigned short gid_org;
if (!is_used_char2(used_chars, cid))
continue;
gid_org = (CIDToGIDMap[2*cid] << 8)|(CIDToGIDMap[2*cid+1]);
if ((size = (idx->offset)[gid_org+1] - (idx->offset)[gid_org])
> CS_STR_LEN_MAX)
ERROR("Charstring too long: gid=%u", gid_org);
if (charstring_len + CS_STR_LEN_MAX >= max_len) {
max_len = charstring_len + 2 * CS_STR_LEN_MAX;
charstrings->data = RENEW(charstrings->data, max_len, card8);
}
(charstrings->offset)[gid] = charstring_len + 1;
cff_seek(cffont, offset + (idx->offset)[gid_org] - 1);
cff_read_data(data, size, cffont);
fd = cff_fdselect_lookup(cffont, gid_org);
charstring_len += cs_copy_charstring(charstrings->data + charstring_len,
max_len - charstring_len,
data, size,
cffont->gsubr, (cffont->subrs)[fd], 0, 0, NULL);
if (cid > 0 && gid_org > 0) {
charset->data.glyphs[charset->num_entries] = cid;
charset->num_entries += 1;
}
if (fd != prev_fd) {
fdselect->data.ranges[fdselect->num_entries].first = gid;
fdselect->data.ranges[fdselect->num_entries].fd = fd;
fdselect->num_entries += 1;
prev_fd = fd;
}
gid++;
}
if (gid != num_glyphs)
ERROR("Unexpeced error: ?????");
RELEASE(data);
cff_release_index(idx);
RELEASE(CIDToGIDMap);
(charstrings->offset)[num_glyphs] = charstring_len + 1;
charstrings->count = num_glyphs;
cffont->num_glyphs = num_glyphs;
cffont->cstrings = charstrings;
/* discard old one, set new data */
cff_release_charsets(cffont->charsets);
cffont->charsets = charset;
cff_release_fdselect(cffont->fdselect);
cffont->fdselect = fdselect;
/* no Global subr */
if (cffont->gsubr)
cff_release_index(cffont->gsubr);
cffont->gsubr = cff_new_index(0);
for (fd = 0; fd < cffont->num_fds; fd++) {
if (cffont->subrs && cffont->subrs[fd]) {
cff_release_index(cffont->subrs[fd]);
cffont->subrs[fd] = NULL;
}
if (cffont->private && (cffont->private)[fd]) {
cff_dict_remove((cffont->private)[fd], "Subrs"); /* no Subrs */
}
}
destlen = write_fontfile(font, cffont);
CIDFontInfo_close(&info);
if (verbose > 1)
MESG("[%u/%u glyphs][%ld bytes]", num_glyphs, cs_count, destlen);
CIDFont_type0_add_CIDSet(font, used_chars, last_cid);
}
int
CIDFont_type0_open (CIDFont *font, const char *name,
CIDSysInfo *cmap_csi, cid_opt *opt,
int expected_flag)
{
CIDSysInfo *csi;
char *fontname;
sfnt *sfont = NULL;
cff_font *cffont;
FILE *fp = NULL;
unsigned long offset = 0;
int is_cid_font = 0;
int expect_cid_font = expected_flag == 0;
int expect_type1_font = expected_flag & CIDFONT_FLAG_TYPE1;
dpx_res_type expect_file_type =
expect_type1_font ? DPX_RES_TYPE_T1FONT : DPX_RES_TYPE_OTFONT;
ASSERT(font);
if (expect_type1_font) {
if (cmap_csi &&
(strcmp(cmap_csi->registry, "Adobe") != 0 ||
strcmp(cmap_csi->ordering, "Identity") != 0)) {
return -1;
}
}
fp = DPXFOPEN(name, expect_file_type);
if (!expect_type1_font) {
if (!fp) {
fp = DPXFOPEN(name, DPX_RES_TYPE_TTFONT);
if (!fp) return -1;
}
sfont = sfnt_open(fp);
if (!sfont) {
ERROR("Not a CFF/OpenType font: %s", name);
}
if (sfont->type == SFNT_TYPE_TTC)
offset = ttc_read_offset(sfont, opt->index);
if ((sfont->type != SFNT_TYPE_TTC && sfont->type != SFNT_TYPE_POSTSCRIPT) ||
sfnt_read_table_directory(sfont, offset) < 0 ||
(offset = sfnt_find_table_pos(sfont, "CFF ")) == 0) {
sfnt_close(sfont);
if (fp)
DPXFCLOSE(fp);
return -1;
}
cffont = cff_open(sfont->stream, offset, 0);
if (!cffont) {
ERROR("Cannot read CFF font data");
}
is_cid_font = cffont->flag & FONTTYPE_CIDFONT;
if (expect_cid_font != is_cid_font) {
cff_close(cffont);
sfnt_close(sfont);
if (fp)
DPXFCLOSE(fp);
return -1;
}
if (is_cid_font) {
cff_read_charsets(cffont);
opt->cff_charsets = cffont->charsets;
cffont->charsets = NULL;
}
} else {
if (!fp)
return -1;
cffont = t1_load_font(NULL, 1, fp);
if (!cffont) {
DPXFCLOSE(fp);
return -1;
}
DPXFCLOSE(fp);
}
csi = NEW(1, CIDSysInfo);
if (is_cid_font) {
csi->registry =
cff_get_string(cffont, (s_SID)cff_dict_get(cffont->topdict, "ROS", 0));
csi->ordering =
cff_get_string(cffont, (s_SID)cff_dict_get(cffont->topdict, "ROS", 1));
csi->supplement = (int)cff_dict_get(cffont->topdict, "ROS", 2);
} else {
csi->registry = NEW(strlen("Adobe") + 1, char);
strcpy(csi->registry, "Adobe");
csi->ordering = NEW(strlen("Identity") + 1, char);
strcpy(csi->ordering, "Identity");
csi->supplement = 0;
}
if (!expect_type1_font && cmap_csi) {
if (strcmp(csi->registry, cmap_csi->registry) != 0 ||
strcmp(csi->ordering, cmap_csi->ordering) != 0) {
MESG("\nCharacter collection mismatched:\n");
MESG("\tFont: %s-%s-%d\n", csi->registry, csi->ordering, csi->supplement);
MESG("\tCMap: %s-%s-%d\n", cmap_csi->registry, cmap_csi->ordering, cmap_csi->supplement);
ERROR("Inconsistent CMap specified for this font.");
}
if (csi->supplement < cmap_csi->supplement) {
WARN("CMap have higher supplmement number.");
WARN("Some characters may not be displayed or printed.");
}
}
{
char *shortname;
int fontname_len = 8;
shortname = cff_get_name(cffont);
if (!shortname)
ERROR("No valid FontName found.");
/*
* Mangled name requires more 7 bytes.
* Style requires more 11 bytes.
*/
if (is_cid_font)
fontname_len += 11;
fontname = NEW(strlen(shortname) + fontname_len, char);
memset(fontname, 0, strlen(shortname) + fontname_len);
strcpy(fontname, shortname);
RELEASE(shortname);
}
cff_close(cffont);
if (is_cid_font) {
if (opt->embed && opt->style != FONT_STYLE_NONE) {
WARN("Embedding disabled due to style option for %s.", name);
opt->embed = 0;
}
switch (opt->style) {
case FONT_STYLE_BOLD:
strcat(fontname, ",Bold");
break;
case FONT_STYLE_ITALIC:
strcat(fontname, ",Italic");
break;
case FONT_STYLE_BOLDITALIC:
strcat(fontname, ",BoldItalic");
break;
}
} else if (expect_type1_font) {
if (opt->style != FONT_STYLE_NONE) {
WARN(",Bold, ,Italic, ... not supported for this type of font...");
opt->style = FONT_STYLE_NONE;
}
} else {
opt->embed = 1;
}
font->fontname = fontname;
font->subtype = CIDFONT_TYPE0;
font->csi = csi;
font->flags |= expected_flag;
font->fontdict = texpdf_new_dict();
texpdf_add_dict(font->fontdict,
texpdf_new_name("Type"),
texpdf_new_name("Font"));
texpdf_add_dict(font->fontdict,
texpdf_new_name("Subtype"),
texpdf_new_name("CIDFontType0"));
if (expect_type1_font || opt->embed) {
memmove(fontname + 7, fontname, strlen(fontname) + 1);
pdf_font_make_uniqueTag(fontname);
fontname[6] = '+';
}