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authorKarl Berry <karl@freefriends.org>2021-02-25 19:22:25 +0000
committerKarl Berry <karl@freefriends.org>2021-02-25 19:22:25 +0000
commitad547a6b5986815fda458221149728d9d9ab1d87 (patch)
tree16296910eb3eca724371474ea9aea3994dc69614 /Build/source/texk/dvipdfm-x/tt_cmap.c
parent947b43de3dd21d58ccc2ffadefc4441ea1c2a813 (diff)
restore Build,TODO from r57911
git-svn-id: svn://tug.org/texlive/trunk@57915 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Build/source/texk/dvipdfm-x/tt_cmap.c')
-rw-r--r--Build/source/texk/dvipdfm-x/tt_cmap.c1773
1 files changed, 1773 insertions, 0 deletions
diff --git a/Build/source/texk/dvipdfm-x/tt_cmap.c b/Build/source/texk/dvipdfm-x/tt_cmap.c
new file mode 100644
index 00000000000..cb8afb69812
--- /dev/null
+++ b/Build/source/texk/dvipdfm-x/tt_cmap.c
@@ -0,0 +1,1773 @@
+/* This is dvipdfmx, an eXtended version of dvipdfm by Mark A. Wicks.
+
+ Copyright (C) 2002-2020 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.
+*/
+
+/*
+ * A large part of codes are brought from ttfdump-0.5.5.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "system.h"
+#include "mem.h"
+#include "error.h"
+#include "dpxconf.h"
+
+#include "sfnt.h"
+
+
+/* Sorry for placing this here.
+ * We need to rewrite TrueType font support code...
+ */
+#include "cmap.h"
+#include "cmap_write.h"
+
+#include "tt_aux.h"
+#include "tt_gsub.h"
+#include "tt_post.h"
+
+#include "unicode.h"
+#include "agl.h"
+
+#include "pdfresource.h"
+#include "dpxfile.h"
+/* Hash */
+#include "dpxutil.h"
+
+#include "tt_cmap.h"
+
+#define VERBOSE_LEVEL_MIN 0
+
+/* format 0: byte encoding table */
+struct cmap0
+{
+ BYTE glyphIndexArray[256];
+};
+
+static struct cmap0 *
+read_cmap0 (sfnt *sfont, ULONG len)
+{
+ struct cmap0 *map;
+ int i;
+
+ if (len < 256) {
+ WARN("invalid format 0 TT cmap subtable");
+ return NULL;
+ }
+
+ map = NEW(1, struct cmap0);
+ for (i = 0; i < 256; i++)
+ map->glyphIndexArray[i] = sfnt_get_byte(sfont);
+
+ return map;
+}
+
+static void
+release_cmap0(struct cmap0 *map)
+{
+ if (map)
+ RELEASE(map);
+}
+
+static USHORT
+lookup_cmap0 (struct cmap0 *map, USHORT cc)
+{
+ return ((cc > 255) ? 0 : map->glyphIndexArray[cc]);
+}
+
+/* format 2: high-byte mapping through table */
+struct SubHeader
+{
+ USHORT firstCode;
+ USHORT entryCount;
+ SHORT idDelta;
+ USHORT idRangeOffset;
+};
+
+struct cmap2
+{
+ USHORT subHeaderKeys[256];
+ struct SubHeader *subHeaders;
+ USHORT *glyphIndexArray;
+};
+
+static struct cmap2 *
+read_cmap2 (sfnt *sfont, ULONG len)
+{
+ struct cmap2 *map;
+ USHORT i, n;
+
+ if (len < 512) {
+ WARN("invalid fromt2 TT cmap subtable");
+ return NULL;
+ }
+
+ map = NEW(1, struct cmap2);
+ for (i = 0; i < 256; i++)
+ map->subHeaderKeys[i] = sfnt_get_ushort(sfont);
+ for (n = 0, i = 0; i < 256; i++) {
+ map->subHeaderKeys[i] /= 8;
+ if (n < map->subHeaderKeys[i])
+ n = map->subHeaderKeys[i];
+ }
+ n += 1; /* the number of subHeaders is one plus the max of subHeaderKeys */
+
+ if (len < 512 + n * 8 ) {
+ WARN("invalid/truncated format2 TT cmap subtable");
+ RELEASE(map);
+ return NULL;
+ }
+
+ map->subHeaders = NEW(n, struct SubHeader);
+ for (i = 0; i < n; i++) {
+ map->subHeaders[i].firstCode = sfnt_get_ushort(sfont);
+ map->subHeaders[i].entryCount = sfnt_get_ushort(sfont);
+ map->subHeaders[i].idDelta = sfnt_get_short(sfont);
+ map->subHeaders[i].idRangeOffset = sfnt_get_ushort(sfont);
+
+ /* It makes things easier to let the offset starts from
+ * the beginning of glyphIndexArray.
+ */
+ if (map->subHeaders[i].idRangeOffset != 0)
+ map->subHeaders[i].idRangeOffset -= (2 + (n - i - 1) * 8);
+ }
+
+ /* Caculate the length of glyphIndexArray, this is ugly,
+ * there should be a better way to get this information.
+ */
+ n = (USHORT) (len - 518 - n * 8) / 2;
+
+ map->glyphIndexArray = NEW(n, USHORT);
+ for (i = 0; i < n; i++)
+ map->glyphIndexArray[i] = sfnt_get_ushort(sfont);
+
+ return map;
+}
+
+static void
+release_cmap2 (struct cmap2 *map)
+{
+ if (map) {
+ if (map->subHeaders)
+ RELEASE(map->subHeaders);
+ if (map->glyphIndexArray)
+ RELEASE(map->glyphIndexArray);
+ RELEASE(map);
+ }
+}
+
+static USHORT
+lookup_cmap2 (struct cmap2 *map, USHORT cc)
+{
+ USHORT idx = 0;
+ SHORT idDelta;
+ USHORT firstCode, entryCount, idRangeOffset;
+ int hi, lo;
+ USHORT i;
+
+ hi = (cc >> 8) & 0xff;
+ lo = cc & 0xff;
+
+ /* select which subHeader to use */
+ i = map->subHeaderKeys[hi];
+
+ firstCode = map->subHeaders[i].firstCode;
+ entryCount = map->subHeaders[i].entryCount;
+ idDelta = map->subHeaders[i].idDelta;
+ idRangeOffset = map->subHeaders[i].idRangeOffset / 2;
+
+ if (lo >= firstCode &&
+ lo < firstCode + entryCount) {
+ idRangeOffset += lo - firstCode;
+ idx = map->glyphIndexArray[idRangeOffset];
+ if (idx != 0)
+ idx = (idx + idDelta) & 0xffff;
+ }
+
+ return idx;
+}
+
+/*
+ * format 4: segment mapping to delta values
+ * - Microsoft standard character to glyph index mapping table
+ */
+struct cmap4
+{
+ USHORT segCountX2;
+ USHORT searchRange;
+ USHORT entrySelector;
+ USHORT rangeShift;
+ USHORT *endCount;
+ USHORT reservedPad;
+ USHORT *startCount;
+ USHORT *idDelta;
+ USHORT *idRangeOffset;
+ USHORT *glyphIndexArray;
+};
+
+static struct cmap4 *
+read_cmap4(sfnt *sfont, ULONG len)
+{
+ struct cmap4 *map;
+ USHORT i, n, segCount;
+
+ if (len < 8) {
+ WARN("invalid format 4 TT cmap subtable");
+ return NULL;
+ }
+
+ map = NEW(1, struct cmap4);
+
+ map->segCountX2 = segCount = sfnt_get_ushort(sfont);
+ map->searchRange = sfnt_get_ushort(sfont);
+ map->entrySelector = sfnt_get_ushort(sfont);
+ map->rangeShift = sfnt_get_ushort(sfont);
+
+ segCount /= 2;
+
+ map->endCount = NEW(segCount, USHORT);
+ for (i = 0; i < segCount; i++)
+ map->endCount[i] = sfnt_get_ushort(sfont);
+
+ map->reservedPad = sfnt_get_ushort(sfont);
+
+ map->startCount = NEW(segCount, USHORT);
+ for (i = 0; i < segCount; i++)
+ map->startCount[i] = sfnt_get_ushort(sfont);
+
+ map->idDelta = NEW(segCount, USHORT);
+ for (i = 0; i < segCount; i++)
+ map->idDelta[i] = sfnt_get_ushort(sfont);
+
+ map->idRangeOffset = NEW(segCount, USHORT);
+ for (i = 0; i < segCount; i++)
+ map->idRangeOffset[i] = sfnt_get_ushort(sfont);
+
+ n = (len - 16 - 8 * segCount) / 2;
+ if (n == 0)
+ map->glyphIndexArray = NULL;
+ else {
+ map->glyphIndexArray = NEW(n, USHORT);
+ for (i = 0; i < n; i++)
+ map->glyphIndexArray[i] = sfnt_get_ushort(sfont);
+ }
+
+ return map;
+}
+
+static void
+release_cmap4 (struct cmap4 *map)
+{
+ if (map) {
+ if (map->endCount) RELEASE(map->endCount);
+ if (map->startCount) RELEASE(map->startCount);
+ if (map->idDelta) RELEASE(map->idDelta);
+ if (map->idRangeOffset) RELEASE(map->idRangeOffset);
+ if (map->glyphIndexArray) RELEASE(map->glyphIndexArray);
+ RELEASE(map);
+ }
+}
+
+static USHORT
+lookup_cmap4 (struct cmap4 *map, USHORT cc)
+{
+ USHORT gid = 0;
+ USHORT i, j, segCount;
+
+ /*
+ * Segments are sorted in order of increasing endCode values.
+ * Last segment maps 0xffff to gid 0 (?)
+ */
+ i = segCount = map->segCountX2 / 2;
+ while (i-- > 0 && cc <= map->endCount[i]) {
+ if (cc >= map->startCount[i]) {
+ if (map->idRangeOffset[i] == 0) {
+ gid = (cc + map->idDelta[i]) & 0xffff;
+ } else if (cc == 0xffff && map->idRangeOffset[i] == 0xffff) {
+ /* this is for protection against some old broken fonts... */
+ gid = 0;
+ } else {
+ j = map->idRangeOffset[i] - (segCount - i) * 2;
+ j = (cc - map->startCount[i]) + (j / 2);
+ gid = map->glyphIndexArray[j];
+ if (gid != 0)
+ gid = (gid + map->idDelta[i]) & 0xffff;
+ }
+ break;
+ }
+ }
+
+ return gid;
+}
+
+/* format 6: trimmed table mapping */
+struct cmap6
+{
+ USHORT firstCode;
+ USHORT entryCount;
+ USHORT *glyphIndexArray;
+};
+
+static struct cmap6 *
+read_cmap6 (sfnt *sfont, ULONG len)
+{
+ struct cmap6 *map;
+ USHORT i;
+
+ if (len < 4) {
+ WARN("invalid format 6 TT cmap subtable");
+ return NULL;
+ }
+
+ map = NEW(1, struct cmap6);
+ map->firstCode = sfnt_get_ushort(sfont);
+ map->entryCount = sfnt_get_ushort(sfont);
+ map->glyphIndexArray = NEW(map->entryCount, USHORT);
+ for (i = 0; i < map->entryCount; i++)
+ map->glyphIndexArray[i] = sfnt_get_ushort(sfont);
+
+ return map;
+}
+
+static void
+release_cmap6 (struct cmap6 *map)
+{
+ if (map) {
+ if (map->glyphIndexArray)
+ RELEASE(map->glyphIndexArray);
+ RELEASE(map);
+ }
+}
+
+static USHORT
+lookup_cmap6 (struct cmap6 *map, USHORT cc)
+{
+ USHORT idx;
+
+ idx = cc - map->firstCode;
+ if (idx < map->entryCount)
+ return map->glyphIndexArray[idx];
+ return 0;
+}
+
+/* Format 8 and 10 not supported...
+ *
+ * format 8: mixed 16-bit and 32-bit coverage
+ * format 10: trimmed array
+ */
+
+/*
+ * format 12: segmented coverage
+ *
+ * startGlyphID is 32-bit long, however, GlyphID is still 16-bit long !
+ */
+
+struct charGroup
+{
+ ULONG startCharCode;
+ ULONG endCharCode;
+ ULONG startGlyphID;
+};
+
+struct cmap12
+{
+ ULONG nGroups;
+ struct charGroup *groups;
+};
+
+/* ULONG length */
+static struct cmap12 *
+read_cmap12 (sfnt *sfont, ULONG len)
+{
+ struct cmap12 *map;
+ ULONG i;
+
+ if (len < 4) {
+ WARN("invalid format 12 TT cmap subtable");
+ return NULL;
+ }
+
+ map = NEW(1, struct cmap12);
+ map->nGroups = sfnt_get_ulong(sfont);
+ map->groups = NEW(map->nGroups, struct charGroup);
+ for (i = 0; i < map->nGroups; i++) {
+ map->groups[i].startCharCode = sfnt_get_ulong(sfont);
+ map->groups[i].endCharCode = sfnt_get_ulong(sfont);
+ map->groups[i].startGlyphID = sfnt_get_ulong(sfont);
+ }
+
+ return map;
+}
+
+static void
+release_cmap12 (struct cmap12 *map)
+{
+ if (map) {
+ if (map->groups)
+ RELEASE(map->groups);
+ RELEASE(map);
+ }
+}
+
+static USHORT
+lookup_cmap12 (struct cmap12 *map, ULONG cccc)
+{
+ USHORT gid = 0;
+ int i;
+
+ i = map->nGroups;
+ while (i-- > 0 &&
+ cccc <= map->groups[i].endCharCode) {
+ if (cccc >= map->groups[i].startCharCode) {
+ gid = (USHORT) ((cccc -
+ map->groups[i].startCharCode +
+ map->groups[i].startGlyphID) & 0xffff);
+ break;
+ }
+ }
+
+ return gid;
+}
+
+/* read cmap */
+tt_cmap *
+tt_cmap_read (sfnt *sfont, USHORT platform, USHORT encoding)
+{
+ tt_cmap *cmap = NULL;
+ ULONG offset, length = 0;
+ USHORT p_id, e_id;
+ USHORT i, n_subtabs;
+
+ ASSERT(sfont);
+
+ offset = sfnt_locate_table(sfont, "cmap");
+ (void) sfnt_get_ushort(sfont);
+ n_subtabs = sfnt_get_ushort(sfont);
+
+ for (i = 0; i < n_subtabs; i++) {
+ p_id = sfnt_get_ushort(sfont);
+ e_id = sfnt_get_ushort(sfont);
+ if (p_id != platform || e_id != encoding)
+ sfnt_get_ulong(sfont);
+ else {
+ offset += sfnt_get_ulong(sfont);
+ break;
+ }
+ }
+
+ if (i == n_subtabs)
+ return NULL;
+
+ cmap = NEW(1, tt_cmap);
+ cmap->map = NULL;
+ cmap->platform = platform;
+ cmap->encoding = encoding;
+
+ sfnt_seek_set(sfont, offset);
+ cmap->format = sfnt_get_ushort(sfont);
+ /* Length and version (language) is ULONG for
+ * format 8, 10, 12 !
+ */
+ if (cmap->format <= 6) {
+ length = sfnt_get_ushort(sfont);
+ cmap->language = sfnt_get_ushort(sfont); /* language (Mac) */
+ } else {
+ if (sfnt_get_ushort(sfont) != 0) { /* reverved - 0 */
+ WARN("Unrecognized cmap subtable format.");
+ tt_cmap_release(cmap);
+ return NULL;
+ } else {
+ length = sfnt_get_ulong(sfont);
+ cmap->language = sfnt_get_ulong(sfont);
+ }
+ }
+
+ switch(cmap->format) {
+ case 0:
+ cmap->map = read_cmap0(sfont, length);
+ break;
+ case 2:
+ cmap->map = read_cmap2(sfont, length);
+ break;
+ case 4:
+ cmap->map = read_cmap4(sfont, length);
+ break;
+ case 6:
+ cmap->map = read_cmap6(sfont, length);
+ break;
+ case 12:
+ /* WARN("UCS-4 TrueType cmap table..."); */
+ cmap->map = read_cmap12(sfont, length);
+ break;
+ default:
+ WARN("Unrecognized OpenType/TrueType cmap format.");
+ tt_cmap_release(cmap);
+ return NULL;
+ break;
+ }
+
+ if (!cmap->map) {
+ tt_cmap_release(cmap);
+ cmap = NULL;
+ }
+
+ return cmap;
+}
+
+void
+tt_cmap_release (tt_cmap *cmap)
+{
+
+ if (cmap) {
+ if (cmap->map) {
+ switch (cmap->format) {
+ case 0:
+ release_cmap0(cmap->map);
+ break;
+ case 2:
+ release_cmap2(cmap->map);
+ break;
+ case 4:
+ release_cmap4(cmap->map);
+ break;
+ case 6:
+ release_cmap6(cmap->map);
+ break;
+ case 12:
+ release_cmap12(cmap->map);
+ break;
+ default:
+ WARN("Unrecognized OpenType/TrueType cmap format: %d", cmap->format);
+ break;
+ }
+ }
+ RELEASE(cmap);
+ }
+
+ return;
+}
+
+
+USHORT
+tt_cmap_lookup (tt_cmap *cmap, ULONG cc)
+{
+ USHORT gid = 0;
+
+ ASSERT(cmap);
+
+ if (cc > 0xffffL && cmap->format < 12) {
+ WARN("Four bytes charcode not supported in OpenType/TrueType cmap format 0...6.");
+ return 0;
+ }
+
+ switch (cmap->format) {
+ case 0:
+ gid = lookup_cmap0(cmap->map, (USHORT) cc);
+ break;
+ case 2:
+ gid = lookup_cmap2(cmap->map, (USHORT) cc);
+ break;
+ case 4:
+ gid = lookup_cmap4(cmap->map, (USHORT) cc);
+ break;
+ case 6:
+ gid = lookup_cmap6(cmap->map, (USHORT) cc);
+ break;
+ case 12:
+ gid = lookup_cmap12(cmap->map, (ULONG) cc);
+ break;
+ default:
+ WARN("Unrecognized OpenType/TrueType cmap subtable format: %d", cmap->format);
+ break;
+ }
+
+ return gid;
+}
+
+
+
+static unsigned char srange_min[2] = {0x00, 0x00};
+static unsigned char srange_max[2] = {0xff, 0xff};
+static unsigned char lrange_min[4] = {0x00, 0x00, 0x00, 0x00};
+static unsigned char lrange_max[4] = {0x7f, 0xff, 0xff, 0xff};
+
+/* OpenType CIDFont:
+ *
+ * We don't use GID for them. OpenType cmap table is for
+ * charcode to GID mapping rather than to-CID mapping.
+ */
+#include "cid.h"
+
+#include "tt_table.h"
+#include "cff_types.h"
+#include "cff_dict.h"
+#include "cff.h"
+
+/* This should be moved to cff.c */
+static void
+create_GIDToCIDMap (uint16_t *GIDToCIDMap, uint16_t num_glyphs, cff_font *cffont)
+{
+ cff_charsets *charset;
+ uint16_t gid, i;
+
+ ASSERT(GIDToCIDMap);
+
+ if (!cffont || !(cffont->flag & FONTTYPE_CIDFONT)) {
+ for (gid = 0; gid < num_glyphs; gid++) {
+ GIDToCIDMap[gid] = gid;
+ }
+
+ return;
+ }
+
+ memset(GIDToCIDMap, 0, num_glyphs*sizeof(uint16_t));
+
+ charset = cffont->charsets;
+ if (!charset)
+ return;
+ switch (charset->format) {
+ case 0:
+ {
+ s_SID *cids; /* CID... */
+
+ cids = charset->data.glyphs;
+ for (gid = 1, i = 0; i < charset->num_entries; i++) {
+ GIDToCIDMap[gid] = cids[i];
+ gid++;
+ }
+ }
+ break;
+ case 1:
+ {
+ cff_range1 *ranges;
+ card16 cid, count;
+
+ ranges = charset->data.range1;
+ for (gid = 1, i = 0; i < charset->num_entries; i++) {
+ cid = ranges[i].first;
+ count = ranges[i].n_left + 1; /* card8 */
+ while (count-- > 0 && gid <= num_glyphs) {
+ GIDToCIDMap[gid] = cid;
+ gid++;
+ cid++;
+ }
+ }
+ }
+ break;
+ case 2:
+ {
+ cff_range2 *ranges;
+ card16 cid, count;
+
+ ranges = charset->data.range2;
+ if (charset->num_entries == 1 && ranges[0].first == 1) {
+ /* "Complete" CIDFont */
+ for (gid = 0; gid < num_glyphs; gid++) {
+ GIDToCIDMap[gid] = gid;
+ }
+ } else {
+ /* Not trivial mapping */
+ for (gid = 1, i = 0; i < charset->num_entries; i++) {
+ cid = ranges[i].first;
+ count = ranges[i].n_left + 1;
+ while (count-- > 0 && gid <= num_glyphs) {
+ GIDToCIDMap[gid] = cid;
+ gid++;
+ cid++;
+ }
+ }
+ }
+ }
+ break;
+ default:
+ WARN("Unknown CFF charset format...: %d", charset->format);
+ break;
+ }
+
+ return;
+}
+
+/* Soft-hyphen (U+00AD) to lower its priority... added here for convenience */
+static int is_PUA_or_presentation (unsigned int uni)
+{
+ /* Some of CJK Radicals Supplement and Kangxi Radicals
+ * are commonly double encoded, lower the priority.
+ * CJK Compatibility Ideographs & Supplement added.
+ */
+ return ((uni >= 0x2E80 && uni <= 0x2EF3) || (uni >= 0x2F00 && uni <= 0x2FD5) ||
+ (uni >= 0xE000 && uni <= 0xF8FF) || (uni >= 0xFB00 && uni <= 0xFB4F) ||
+ (uni >= 0xF900 && uni <= 0xFAFF) || (uni >= 0x2F800 && uni <= 0x2FA1F) ||
+ (uni >= 0xF0000 && uni <= 0xFFFFD) || (uni >= 0x100000 && uni <= 0x10FFFD) ||
+ (uni == 0x00AD));
+}
+
+static char *
+lookup_glyph_name (struct tt_post_table *post, cff_font *cffont, USHORT gid)
+{
+ char *name = NULL;
+
+ if (post)
+ name = tt_get_glyphname(post, gid);
+ if (!name && cffont)
+ name = cff_get_glyphname(cffont, gid);
+
+ return name;
+}
+
+/*
+ * Substituted glyphs:
+ *
+ * Mapping information stored in cmap_add.
+ */
+#ifndef is_used_char2
+#define is_used_char2(b,c) (((b)[(c)/8]) & (1 << (7-((c)%8))))
+#endif
+
+static int32_t
+handle_subst_glyphs (CMap *cmap, CMap *cmap_add, char *used_chars)
+{
+ int32_t count = 0;
+ int32_t cid;
+
+ for (cid = 0; cid < 65536; cid++) {
+ if (!is_used_char2(used_chars, cid))
+ continue;
+ else {
+ unsigned char buf[256];
+ int inbytesleft = 2, outbytesleft = 254;
+ size_t len;
+ unsigned char *outbuf = buf + 2;
+ const unsigned char *inbuf = buf;
+
+ buf[0] = (cid >> 8) & 0xff;
+ buf[1] = cid & 0xff;
+ CMap_decode(cmap_add, &inbuf, &inbytesleft, &outbuf, &outbytesleft);
+ if (inbytesleft == 0) {
+ len = 254 - outbytesleft;
+ CMap_add_bfchar(cmap, buf, 2, buf + 2, len);
+ used_chars[cid / 8] &= ~(1 << (7 - (cid % 8)));
+ count++;
+ }
+ }
+ }
+
+ return count;
+}
+
+static int32_t
+add_ToUnicode_via_glyph_name (CMap *cmap, char *used_chars, USHORT num_glyphs,
+ uint16_t *GIDToCIDMap,
+ sfnt *sfont, cff_font *cffont)
+{
+ int32_t count = 0;
+ USHORT gid;
+ struct tt_post_table *post = NULL;
+
+ post = tt_read_post_table(sfont);
+ if (!post && !cffont)
+ return count;
+
+ for (gid = 0; gid < num_glyphs; gid++) {
+ uint16_t cid = GIDToCIDMap[gid];
+ if (is_used_char2(used_chars, cid)) {
+#define MAX_UNICODES 32
+ char *name;
+ int32_t unicodes[MAX_UNICODES];
+ int unicode_count = -1;
+
+ name = lookup_glyph_name(post, cffont, gid);
+ if (name) {
+ unicode_count = agl_get_unicodes(name, unicodes, MAX_UNICODES);
+#undef MAX_UNICODES
+ RELEASE(name);
+ if (unicode_count > 0) {
+ unsigned char *buf;
+ unsigned char *p, *endptr;
+ int k;
+ size_t len = 0;
+
+ buf = NEW(unicode_count*4+2, unsigned char);
+ p = buf + 2;
+ endptr = buf + (unicode_count * 4 + 2);
+ for (k = 0; k < unicode_count; ++k) {
+ len += UC_UTF16BE_encode_char(unicodes[k], &p, endptr);
+ }
+ buf[0] = (cid >> 8) & 0xff;
+ buf[1] = cid & 0xff;
+ CMap_add_bfchar(cmap, buf, 2, buf + 2, len);
+ used_chars[cid / 8] &= ~(1 << (7 - (cid % 8)));
+ count++;
+
+ RELEASE(buf);
+ }
+ }
+ }
+ }
+
+ if (post)
+ tt_release_post_table(post);
+
+ return count;
+}
+
+static void
+create_inverse_cmap4 (int32_t *map_base, int32_t *map_sub, USHORT num_glyphs,
+ struct cmap4 *map)
+{
+ USHORT segCount = map->segCountX2 / 2;
+ USHORT i, j;
+
+ for (i = 0; i < segCount; i++) {
+ USHORT c0 = map->startCount[i];
+ USHORT c1 = map->endCount[i];
+ USHORT d = map->idRangeOffset[i] / 2 - (segCount - i);
+ for (j = 0; j <= c1 - c0; j++) {
+ USHORT ch = c0 + j;
+ USHORT gid;
+
+ if (map->idRangeOffset[i] == 0) {
+ gid = (ch + map->idDelta[i]) & 0xffff;
+ } else if (c0 == 0xffff && c1 == 0xffff && map->idRangeOffset[i] == 0xffff) {
+ /* this is for protection against some old broken fonts... */
+ gid = 0;
+ } else {
+ gid = (map->glyphIndexArray[j + d] + map->idDelta[i]) & 0xffff;
+ }
+ if (is_PUA_or_presentation(ch)) {
+ map_sub[gid] = ch;
+ } else {
+ map_base[gid] = ch;
+ }
+ }
+ }
+}
+
+static void
+create_inverse_cmap12 (int32_t *map_base, int32_t *map_sub, USHORT num_glyphs,
+ struct cmap12 *map)
+{
+ ULONG i, ch;
+
+ for (i = 0; i < map->nGroups; i++) {
+ for (ch = map->groups[i].startCharCode;
+ ch <= map->groups[i].endCharCode; ch++) {
+ int d = ch - map->groups[i].startCharCode;
+ USHORT gid = (USHORT) ((map->groups[i].startGlyphID + d) & 0xffff);
+ if (is_PUA_or_presentation(ch)) {
+ map_sub[gid] = ch;
+ } else {
+ map_base[gid] = ch;
+ }
+ }
+ }
+}
+
+/* NOTE: Reverse mapping code which had been placed here is removed since:
+ * - Implementation of reserve CMap mapping itself is imcomplete.
+ * - It is wrong to assume that all CMap passed here is Unicode to CID mapping.
+ * Especially, the second one causes problems.
+ */
+static pdf_obj *
+create_ToUnicode_cmap (tt_cmap *ttcmap,
+ const char *cmap_name,
+ CMap *cmap_add,
+ const char *used_chars,
+ sfnt *sfont)
+{
+ pdf_obj *stream = NULL;
+ int32_t *map_base = NULL, *map_sub = NULL;
+ USHORT gid, num_glyphs = 0;
+
+ ASSERT(ttcmap);
+
+ /* Get num_glyphs from maxp talbe */
+ {
+ struct tt_maxp_table *maxp;
+
+ maxp = tt_read_maxp_table(sfont);
+ if (maxp) {
+ num_glyphs = maxp->numGlyphs;
+ RELEASE(maxp);
+ }
+ }
+
+ /* Initialize GID to Unicode mapping table */
+ map_base = NEW(num_glyphs, int32_t);
+ map_sub = NEW(num_glyphs, int32_t);
+ for (gid = 0; gid < num_glyphs; gid++) {
+ map_base[gid] = -1;
+ map_sub [gid] = -1;
+ }
+
+ /* Create "base" mapping from inverse mapping of OpenType cmap */
+ switch (ttcmap->format) {
+ case 4:
+ create_inverse_cmap4(map_base, map_sub, num_glyphs, ttcmap->map);
+ break;
+ case 12:
+ create_inverse_cmap12(map_base, map_sub, num_glyphs, ttcmap->map);
+ break;
+ }
+
+ /* Now create ToUnicode CMap stream */
+ {
+ CMap *cmap;
+ int32_t count;
+ cff_font *cffont = NULL;
+ char is_cidfont = 0;
+ uint16_t *GIDToCIDMap = NULL;
+ char *used_chars_copy = NULL;
+
+ if (sfont->type == SFNT_TYPE_POSTSCRIPT) {
+ ULONG offset;
+ offset = sfnt_find_table_pos(sfont, "CFF ");
+ /* "CFF " table must exist here. Just abort... */
+ if (offset == 0) {
+ ERROR("\"CFF \" table not found. Must be found before... Can't continue.");
+ }
+ cffont = cff_open(sfont->stream, offset, 0);
+ cff_read_charsets(cffont);
+ }
+ is_cidfont = cffont && (cffont->flag & FONTTYPE_CIDFONT);
+
+ /* GIT to CID mapping info. */
+ GIDToCIDMap = NEW(num_glyphs, uint16_t);
+ if (is_cidfont) {
+ create_GIDToCIDMap(GIDToCIDMap, num_glyphs, cffont);
+ } else {
+ for (gid = 0; gid < num_glyphs; gid++) {
+ GIDToCIDMap[gid] = gid;
+ }
+ }
+ cmap = CMap_new();
+ CMap_set_name (cmap, cmap_name);
+ CMap_set_wmode(cmap, 0);
+ CMap_set_type (cmap, CMAP_TYPE_TO_UNICODE);
+ CMap_set_CIDSysInfo(cmap, &CSI_UNICODE);
+ CMap_add_codespacerange(cmap, srange_min, srange_max, 2);
+
+ count = 0;
+ used_chars_copy = NEW(8192, char);
+ memcpy(used_chars_copy, used_chars, 8192);
+ for (gid = 0; gid < num_glyphs; gid++) {
+ uint16_t cid = GIDToCIDMap[gid];
+ if (is_used_char2(used_chars_copy, cid)) {
+ int32_t ch;
+ unsigned char src[2], dst[4];
+ unsigned char *p = dst, *endptr = dst + 4;
+ size_t len;
+
+ ch = map_base[gid];
+ if (UC_is_valid(ch)) {
+ src[0] = (cid >> 8) & 0xff;
+ src[1] = cid & 0xff;
+ len = UC_UTF16BE_encode_char(ch, &p, endptr);
+ CMap_add_bfchar(cmap, src, 2, dst, len);
+ used_chars_copy[cid / 8] &= ~(1 << (7 - (cid % 8)));
+ count++;
+ }
+ }
+ }
+
+ /* cmap_add here stores information about all unencoded glyphs which can be
+ * accessed only through OT Layout GSUB table.
+ * This is only availabel when encoding is "unicode".
+ */
+ if (cmap_add) {
+ count += handle_subst_glyphs(cmap, cmap_add, used_chars_copy);
+ } else {
+ /* Else, try gathering information from GSUB tables */
+ count += otl_gsub_add_ToUnicode(cmap, used_chars_copy,
+ map_base, map_sub, num_glyphs,
+ GIDToCIDMap, sfont);
+ }
+ /* Find Unicode mapping via PostScript glyph names... */
+ count += add_ToUnicode_via_glyph_name(cmap, used_chars_copy, num_glyphs,
+ GIDToCIDMap, sfont, is_cidfont ? NULL : cffont);
+ if (cffont)
+ cff_close(cffont);
+
+ /* Finaly, PUA and presentation forms... */
+ for (gid = 0; gid < num_glyphs; gid++) {
+ uint16_t cid = GIDToCIDMap[gid];
+ if (is_used_char2(used_chars_copy, cid)) {
+ int32_t ch;
+ unsigned char src[2], dst[4];
+ unsigned char *p = dst, *endptr = dst + 4;
+ size_t len;
+
+ ch = map_sub[gid];
+ if (UC_is_valid(ch)) {
+ src[0] = (cid >> 8) & 0xff;
+ src[1] = cid & 0xff;
+ len = UC_UTF16BE_encode_char(ch, &p, endptr);
+ CMap_add_bfchar(cmap, src, 2, dst, len);
+ used_chars_copy[cid / 8] &= ~(1 << (7 - (cid % 8)));
+ count++;
+ }
+ }
+ }
+
+ /* Check for missing mapping */
+ if (dpx_conf.verbose_level > VERBOSE_LEVEL_MIN) {
+ for (gid = 0; gid < num_glyphs; gid++) {
+ uint16_t cid = GIDToCIDMap[gid];
+ if (is_used_char2(used_chars_copy, cid)) {
+ WARN("Unable to find ToUnicode mapping for glyph CID=%u (GID=%u)", cid, gid);
+ }
+ }
+ }
+ RELEASE(GIDToCIDMap);
+ RELEASE(used_chars_copy);
+
+ if (count < 1)
+ stream = NULL;
+ else {
+ stream = CMap_create_stream(cmap);
+ }
+ CMap_release(cmap);
+ }
+ RELEASE(map_base);
+ RELEASE(map_sub);
+
+ return stream;
+}
+
+typedef struct {
+ short platform;
+ short encoding;
+} cmap_plat_enc_rec;
+
+static cmap_plat_enc_rec cmap_plat_encs[] = {
+ { 3, 10 },
+ { 0, 3 },
+ { 0, 0 },
+ { 3, 1 },
+ { 0, 1 }
+};
+
+pdf_obj *
+otf_create_ToUnicode_stream (const char *font_name,
+ uint32_t ttc_index, /* 0 for non-TTC */
+ const char *basefont,
+ const char *used_chars)
+{
+ pdf_obj *cmap_ref = NULL; /* returned value */
+ CMap *cmap_add = NULL;
+ char *cmap_name;
+ FILE *fp = NULL;
+ sfnt *sfont;
+ ULONG offset = 0;
+ tt_cmap *ttcmap;
+ int cmap_id, cmap_add_id;
+ int i;
+
+ cmap_name = NEW(strlen(basefont)+strlen("-UTF16")+1, char);
+ sprintf(cmap_name, "%s-UTF16", basefont);
+
+ cmap_id = pdf_findresource("CMap", cmap_name);
+ if (cmap_id >= 0) {
+ RELEASE(cmap_name);
+ cmap_ref = pdf_get_resource_reference(cmap_id);
+ return cmap_ref;
+ }
+
+ if (dpx_conf.verbose_level > VERBOSE_LEVEL_MIN) {
+ MESG("\n");
+ MESG("otf_cmap>> Creating ToUnicode CMap for \"%s\"...\n", font_name);
+ }
+
+
+ if ((fp = DPXFOPEN(font_name, DPX_RES_TYPE_TTFONT)) ||
+ (fp = DPXFOPEN(font_name, DPX_RES_TYPE_OTFONT))) {
+ sfont = sfnt_open(fp);
+ } else if ((fp = DPXFOPEN(font_name, DPX_RES_TYPE_DFONT))) {
+ sfont = dfont_open(fp, ttc_index);
+ } else {
+ RELEASE(cmap_name);
+ return NULL;
+ }
+
+ if (!sfont) {
+ WARN("Could not open OpenType/TrueType font file \"%s\"", font_name);
+ RELEASE(cmap_name);
+ DPXFCLOSE(fp);
+ return NULL;
+ }
+
+ switch (sfont->type) {
+ case SFNT_TYPE_DFONT:
+ offset = sfont->offset;
+ break;
+ case SFNT_TYPE_TTC:
+ offset = ttc_read_offset(sfont, ttc_index);
+ if (offset == 0) {
+ WARN("Invalid TTC index for font: %s", font_name);
+ sfnt_close(sfont);
+ DPXFCLOSE(fp);
+ RELEASE(cmap_name);
+ return NULL;
+ }
+ break;
+ default:
+ offset = 0;
+ break;
+ }
+
+ if (sfnt_read_table_directory(sfont, offset) < 0) {
+ WARN("Could not read OpenType/TrueType table directory: %s", font_name);
+ sfnt_close(sfont);
+ DPXFCLOSE(fp);
+ RELEASE(cmap_name);
+ return NULL;
+ }
+
+ /* cmap_add is used for storing information on ToUnicode mapping for
+ * unencoded glyphs which can be reached only through GSUB substitution.
+ * This is available only when "unicode" is specified in the encoding
+ * field of fontmap. We remember the inverse mapping via cmap_add in this
+ * case.
+ */
+ {
+ char *cmap_add_name;
+ size_t len;
+
+ len = strlen(font_name)+strlen("-UCS32-Add")+32;
+ cmap_add_name = NEW(len, char);
+ snprintf(cmap_add_name, len, "%s:%d-UCS32-Add", font_name, ttc_index);
+ cmap_add_name[len-1] = '\0';
+ cmap_add_id = CMap_cache_find(cmap_add_name);
+ RELEASE(cmap_add_name);
+ if (cmap_add_id < 0) {
+ cmap_add = NULL;
+ } else {
+ cmap_add = CMap_cache_get(cmap_add_id);
+ }
+ }
+
+ ttcmap = NULL;
+ for (i = 0; i < sizeof(cmap_plat_encs) / sizeof(cmap_plat_enc_rec); ++i) {
+ ttcmap = tt_cmap_read(sfont, cmap_plat_encs[i].platform, cmap_plat_encs[i].encoding);
+ if (!ttcmap)
+ continue;
+
+ if (ttcmap->format == 4 || ttcmap->format == 12) {
+ break;
+ } else {
+ tt_cmap_release(ttcmap);
+ ttcmap = NULL;
+ }
+ }
+ if (ttcmap) {
+ pdf_obj *cmap_obj;
+
+ CMap_set_silent(1); /* many warnings without this... */
+ cmap_obj = create_ToUnicode_cmap(ttcmap, cmap_name, cmap_add, used_chars, sfont);
+ CMap_set_silent(0);
+ if (cmap_obj) {
+ cmap_id = pdf_defineresource("CMap", cmap_name,
+ cmap_obj, PDF_RES_FLUSH_IMMEDIATE);
+ cmap_ref = pdf_get_resource_reference(cmap_id);
+ }
+ tt_cmap_release(ttcmap);
+ }
+
+ /* Cleanup */
+ RELEASE(cmap_name);
+ sfnt_close(sfont);
+ DPXFCLOSE(fp);
+
+#ifndef LIBDPX
+ if (!cmap_ref) {
+ WARN("Creating ToUnicode CMap failed for \"%s\"", font_name);
+ }
+#endif
+
+ return cmap_ref;
+}
+
+
+/* Creating input CMaps from OT cmap table */
+
+static void
+load_cmap4 (struct cmap4 *map, uint16_t *GIDToCIDMap, USHORT num_glyphs,
+ otl_gsub *gsub_vert, otl_gsub *gsub_list,
+ CMap *cmap, int32_t *map_base, int32_t *map_sub)
+{
+ USHORT c0, c1, gid, cid;
+ USHORT j, d, segCount;
+ USHORT ch;
+ int i;
+ unsigned char buf[4];
+
+ segCount = map->segCountX2 / 2;
+ for (i = segCount - 1; i >= 0 ; i--) {
+ c0 = map->startCount[i];
+ c1 = map->endCount[i];
+ d = map->idRangeOffset[i] / 2 - (segCount - i);
+ for (j = 0; j <= c1 - c0; j++) {
+ ch = c0 + j;
+ if (map->idRangeOffset[i] == 0) {
+ gid = (ch + map->idDelta[i]) & 0xffff;
+ } else if (c0 == 0xffff && c1 == 0xffff && map->idRangeOffset[i] == 0xffff) {
+ /* this is for protection against some old broken fonts... */
+ gid = 0;
+ } else {
+ gid = (map->glyphIndexArray[j+d] + map->idDelta[i]) & 0xffff;
+ }
+ if (gid != 0 && gid != 0xffff) {
+ /* Apply GSUB features */
+ if (gsub_list)
+ otl_gsub_apply_chain(gsub_list, &gid);
+ if (gsub_vert)
+ otl_gsub_apply(gsub_vert, &gid);
+ cid = (gid < num_glyphs) ? GIDToCIDMap[gid] : 0;
+ buf[0] = 0;
+ buf[1] = 0;
+ buf[2] = (ch >> 8) & 0xff;
+ buf[3] = ch & 0xff;
+ CMap_add_cidchar(cmap, buf, 4, cid);
+ /* For ToUnicode creation */
+ if (map_base && map_sub) {
+ if (is_PUA_or_presentation(ch)) {
+ map_sub[gid] = ch;
+ } else {
+ map_base[gid] = ch;
+ }
+ }
+ }
+ }
+ }
+
+ return;
+}
+
+static void
+load_cmap12 (struct cmap12 *map, uint16_t *GIDToCIDMap, USHORT num_glyphs,
+ otl_gsub *gsub_vert, otl_gsub *gsub_list,
+ CMap *cmap, int32_t *map_base, int32_t *map_sub)
+{
+ ULONG i, ch;
+ USHORT gid, cid;
+ unsigned char buf[4];
+
+ for (i = 0; i < map->nGroups; i++) {
+ for (ch = map->groups[i].startCharCode;
+ ch <= map->groups[i].endCharCode; ch++) {
+ int d = ch - map->groups[i].startCharCode;
+ gid = (USHORT) ((map->groups[i].startGlyphID + d) & 0xffff);
+ if (gsub_list)
+ otl_gsub_apply_chain(gsub_list, &gid);
+ if (gsub_vert)
+ otl_gsub_apply(gsub_vert, &gid);
+ cid = (gid < num_glyphs) ? GIDToCIDMap[gid] : 0;
+ buf[0] = (ch >> 24) & 0xff;
+ buf[1] = (ch >> 16) & 0xff;
+ buf[2] = (ch >> 8) & 0xff;
+ buf[3] = ch & 0xff;
+ CMap_add_cidchar(cmap, buf, 4, cid);
+ if (map_base && map_sub) {
+ if (is_PUA_or_presentation(ch)) {
+ map_sub[gid] = ch;
+ } else {
+ map_base[gid] = ch;
+ }
+ }
+ }
+ }
+
+ return;
+}
+
+int
+otf_load_Unicode_CMap (const char *map_name, uint32_t ttc_index, /* 0 for non-TTC font */
+ const char *otl_tags, int wmode)
+{
+ int cmap_id = -1;
+ char *cmap_name = NULL;
+ sfnt *sfont = NULL;
+ ULONG offset = 0;
+ uint16_t num_glyphs = 0;
+ FILE *fp = NULL;
+ tt_cmap *ttcmap = NULL;
+ CIDSysInfo csi = {NULL, NULL, 0};
+ uint16_t *GIDToCIDMap = NULL;
+
+ if (!map_name)
+ return -1;
+
+ /* First look for cache if it was already loaded */
+ if (otl_tags) {
+ size_t len;
+ len = strlen(map_name)+strlen("-UCS4-H")+strlen(otl_tags)+32;
+ cmap_name = NEW(len, char);
+ if (wmode)
+ snprintf(cmap_name, len, "%s:%d:%s-UCS4-V", map_name, ttc_index, otl_tags);
+ else
+ snprintf(cmap_name, len, "%s:%d:%s-UCS4-H", map_name, ttc_index, otl_tags);
+ cmap_name[len-1] = '\0';
+ } else {
+ size_t len;
+ len = strlen(map_name)+strlen("-UCS4-H")+32;
+ cmap_name = NEW(len, char);
+ if (wmode)
+ snprintf(cmap_name, len, "%s:%d-UCS4-V", map_name, ttc_index);
+ else {
+ snprintf(cmap_name, len, "%s:%d-UCS4-H", map_name, ttc_index);
+ }
+ cmap_name[len-1] = '\0';
+ }
+ cmap_id = CMap_cache_find(cmap_name);
+ if (cmap_id >= 0) {
+ RELEASE(cmap_name);
+ if (dpx_conf.verbose_level > VERBOSE_LEVEL_MIN)
+ MESG("otf_cmap>> Found at cmap_id=%d.\n", cmap_id);
+
+ return cmap_id;
+ }
+
+ /* CMap not found */
+ if (dpx_conf.verbose_level > VERBOSE_LEVEL_MIN) {
+ MESG("\n");
+ MESG("otf_cmap>> Creating Unicode charmap for font=\"%s\" layout=\"%s\"\n",
+ map_name, (otl_tags ? otl_tags : "none"));
+ }
+
+ fp = DPXFOPEN(map_name, DPX_RES_TYPE_TTFONT);
+ if (!fp) {
+ fp = DPXFOPEN(map_name, DPX_RES_TYPE_OTFONT);
+ }
+ if (!fp) {
+ fp = DPXFOPEN(map_name, DPX_RES_TYPE_DFONT);
+ if (!fp) {
+ RELEASE(cmap_name);
+ return -1;
+ }
+ sfont = dfont_open(fp, ttc_index);
+ } else {
+ sfont = sfnt_open(fp);
+ }
+
+ if (!sfont) {
+ WARN("Could not open OpenType/TrueType/dfont font file \"%s\"", map_name);
+ RELEASE(cmap_name);
+ DPXFCLOSE(fp);
+ return -1;
+ }
+ switch (sfont->type) {
+ case SFNT_TYPE_TTC:
+ offset = ttc_read_offset(sfont, ttc_index);
+ if (offset == 0) {
+ WARN("Offset=0 returned for font=%s, TTC_index=%d", map_name, ttc_index);
+ RELEASE(cmap_name);
+ sfnt_close(sfont);
+ DPXFCLOSE(fp);
+ return -1;
+ }
+ break;
+ case SFNT_TYPE_TRUETYPE:
+ case SFNT_TYPE_POSTSCRIPT:
+ offset = 0;
+ break;
+ case SFNT_TYPE_DFONT:
+ offset = sfont->offset;
+ break;
+ default:
+ WARN("Not a OpenType/TrueType/TTC font?: %s", map_name);
+ RELEASE(cmap_name);
+ sfnt_close(sfont);
+ DPXFCLOSE(fp);
+ return -1;
+ break;
+ }
+
+ if (sfnt_read_table_directory(sfont, offset) < 0) {
+ WARN("Could not read OpenType/TrueType table directory: %s", map_name);
+ RELEASE(cmap_name);
+ sfnt_close(sfont);
+ DPXFCLOSE(fp);
+ return -1;
+ }
+
+ {
+ struct tt_maxp_table *maxp;
+
+ maxp = tt_read_maxp_table(sfont);
+ num_glyphs = (card16) maxp->numGlyphs;
+ RELEASE(maxp);
+ }
+
+ GIDToCIDMap = NEW(num_glyphs, uint16_t);
+ memset(GIDToCIDMap, 0, num_glyphs*sizeof(uint16_t));
+ if (sfont->type == SFNT_TYPE_POSTSCRIPT) {
+ cff_font *cffont;
+ card16 gid;
+
+ offset = sfnt_find_table_pos(sfont, "CFF ");
+ /* Possibly "CFF2" table for variable font: not supported. */
+ if (offset == 0) {
+ WARN("PS OpenType but no \"CFF \" table.. Maybe variable font? (not supported)");
+ RELEASE(cmap_name);
+ RELEASE(GIDToCIDMap);
+ sfnt_close(sfont);
+ DPXFCLOSE(fp);
+ return -1;
+ }
+ cffont = cff_open(sfont->stream, offset, 0);
+ if (!cffont) {
+ RELEASE(cmap_name);
+ RELEASE(GIDToCIDMap);
+ sfnt_close(sfont);
+ DPXFCLOSE(fp);
+ return -1;
+ }
+ if (!(cffont->flag & FONTTYPE_CIDFONT)) {
+ csi.registry = strdup("Adobe");
+ csi.ordering = strdup("Identity");
+ csi.supplement = 0;
+ for (gid = 0; gid < num_glyphs; gid++) {
+ GIDToCIDMap[gid] = gid;
+ }
+ } else {
+ if (!cff_dict_known(cffont->topdict, "ROS")) {
+ csi.registry = strdup("Adobe");
+ csi.ordering = strdup("Identity");
+ csi.supplement = 0;
+ } else {
+ card16 reg, ord;
+
+ reg = (card16) cff_dict_get(cffont->topdict, "ROS", 0);
+ ord = (card16) cff_dict_get(cffont->topdict, "ROS", 1);
+ csi.registry = cff_get_string(cffont, reg);
+ csi.ordering = cff_get_string(cffont, ord);
+ csi.supplement = (int) cff_dict_get(cffont->topdict, "ROS", 2);
+ }
+ cff_read_charsets(cffont);
+ create_GIDToCIDMap(GIDToCIDMap, num_glyphs, cffont);
+ }
+ cff_close(cffont);
+ } else {
+ uint16_t gid;
+
+ csi.registry = strdup("Adobe");
+ csi.ordering = strdup("Identity");
+ csi.supplement = 0;
+ for (gid = 0; gid < num_glyphs; gid++) {
+ GIDToCIDMap[gid] = gid;
+ }
+ }
+
+ ttcmap = tt_cmap_read(sfont, 3, 10); /* Microsoft UCS4 */
+ if (!ttcmap) {
+ ttcmap = tt_cmap_read(sfont, 3, 1); /* Microsoft UCS2 */
+ if (!ttcmap) {
+ ttcmap = tt_cmap_read(sfont, 0, 3); /* Unicode 2.0 or later */
+ }
+ }
+
+ if (ttcmap) {
+ CMap *cmap = NULL;
+ int32_t *map_base, *map_sub;
+ otl_gsub *gsub_vert = NULL;
+ otl_gsub *gsub_list = NULL;
+ uint32_t gid;
+
+ if (wmode == 1) {
+ gsub_vert = otl_gsub_new();
+ if (otl_gsub_add_feat(gsub_vert, "*", "*", "vrt2", sfont) < 0) {
+ if (otl_gsub_add_feat(gsub_vert, "*", "*", "vert", sfont) < 0) {
+ WARN("GSUB feature vrt2/vert not found.");
+ otl_gsub_release(gsub_vert);
+ gsub_vert = NULL;
+ } else {
+ otl_gsub_select(gsub_vert, "*", "*", "vert");
+ }
+ } else {
+ otl_gsub_select(gsub_vert, "*", "*", "vrt2");
+ }
+ } else {
+ gsub_vert = NULL;
+ }
+ if (otl_tags) {
+ gsub_list = otl_gsub_new();
+ if (otl_gsub_add_feat_list(gsub_list, otl_tags, sfont) < 0) {
+ WARN("Reading GSUB feature table(s) failed for \"%s\"", otl_tags);
+ } else {
+ otl_gsub_set_chain(gsub_list, otl_tags);
+ }
+ } else {
+ gsub_list = NULL;
+ }
+ cmap = CMap_new();
+ CMap_set_name(cmap, cmap_name);
+ CMap_set_type(cmap, CMAP_TYPE_CODE_TO_CID);
+ CMap_set_wmode(cmap, wmode);
+ CMap_add_codespacerange(cmap, lrange_min, lrange_max, 4);
+ CMap_set_CIDSysInfo(cmap, &csi);
+ map_base = NEW(num_glyphs, int32_t);
+ map_sub = NEW(num_glyphs, int32_t);
+ for (gid = 0; gid < num_glyphs; gid++) {
+ map_base[gid] = -1;
+ map_sub[gid] = -1;
+ }
+ switch (ttcmap->format) {
+ case 12:
+ load_cmap12(ttcmap->map, GIDToCIDMap, num_glyphs,
+ gsub_vert, gsub_list,
+ cmap, map_base, map_sub);
+ break;
+ case 4:
+ load_cmap4(ttcmap->map, GIDToCIDMap, num_glyphs,
+ gsub_vert, gsub_list,
+ cmap, map_base, map_sub);
+ break;
+ }
+ if (gsub_vert)
+ otl_gsub_release(gsub_vert);
+ if (gsub_list)
+ otl_gsub_release(gsub_list);
+ tt_cmap_release(ttcmap);
+
+ if (otl_tags) {
+ CMap *tounicode = NULL;
+ char *tounicode_name;
+ int tounicode_id;
+ size_t name_len;
+
+ name_len = strlen(map_name)+strlen("-UCS32-Add")+32;
+ tounicode_name = NEW(name_len, char);
+ snprintf(tounicode_name, name_len, "%s:%d-UCS32-Add", map_name, ttc_index);
+ tounicode_name[name_len-1] = '\0';
+ tounicode_id = CMap_cache_find(tounicode_name);
+ if (tounicode_id >= 0)
+ tounicode = CMap_cache_get(tounicode_id);
+ else {
+ tounicode = CMap_new();
+ CMap_set_name (tounicode, tounicode_name);
+ CMap_set_type (tounicode, CMAP_TYPE_TO_UNICODE);
+ CMap_set_wmode(tounicode, 0);
+ CMap_add_codespacerange(tounicode, srange_min, srange_max, 2);
+ CMap_set_CIDSysInfo(tounicode, &CSI_UNICODE);
+ CMap_add_bfchar(tounicode, srange_min, 2, srange_max, 2);
+ tounicode_id = CMap_cache_add(tounicode);
+ }
+ RELEASE(tounicode_name);
+
+ for (gid = 0; gid < num_glyphs; gid++) {
+ uint16_t cid = GIDToCIDMap[gid];
+ unsigned char src[2], dst[4];
+ if (cid > 0) {
+ int32_t ch = UC_is_valid(map_base[gid]) ? map_base[gid] : map_sub[gid];
+ if (UC_is_valid(ch)) {
+ unsigned char *p = dst;
+ unsigned char *endptr = dst + 4;
+ size_t len;
+ src[0] = (cid >> 8) & 0xff;
+ src[1] = cid & 0xff;
+ len = UC_UTF16BE_encode_char(ch, &p, endptr);
+ if (len > 0) {
+ CMap_add_bfchar(tounicode, src, 2, dst, len);
+ }
+ }
+ }
+ }
+ }
+ cmap_id = CMap_cache_add(cmap);
+ }
+
+ RELEASE(cmap_name);
+ RELEASE(GIDToCIDMap);
+ if (csi.registry)
+ RELEASE(csi.registry);
+ if (csi.ordering)
+ RELEASE(csi.ordering);
+ sfnt_close(sfont);
+ DPXFCLOSE(fp);
+
+ return cmap_id;
+}
+
+int
+otf_try_load_GID_to_CID_map (const char *map_name, uint32_t ttc_index, int wmode)
+{
+ int cmap_id = -1;
+ sfnt *sfont = NULL;
+ ULONG offset = 0;
+ char *cmap_name = NULL;
+ FILE *fp = NULL;
+ int len;
+
+ if (!map_name)
+ return -1;
+
+ /* Check if already loaded */
+ len = strlen(map_name) + 32;
+ cmap_name = NEW(len, char);
+ snprintf(cmap_name, len, "%s:%d-%1d-GID", map_name, ttc_index, wmode);
+ cmap_name[len-1] = '\0';
+ cmap_id = CMap_cache_find(cmap_name);
+ if (cmap_id >= 0) {
+ RELEASE(cmap_name);
+ if (dpx_conf.verbose_level > VERBOSE_LEVEL_MIN)
+ MESG("otf_cmap>> GID-to-CID mapping found at cmap_id=%d.\n", cmap_id);
+
+ return cmap_id;
+ }
+
+ fp = DPXFOPEN(map_name, DPX_RES_TYPE_TTFONT);
+ if (!fp) {
+ fp = DPXFOPEN(map_name, DPX_RES_TYPE_OTFONT);
+ }
+ if (!fp) {
+ fp = DPXFOPEN(map_name, DPX_RES_TYPE_DFONT);
+ if (!fp) {
+ RELEASE(cmap_name);
+ return -1;
+ }
+ sfont = dfont_open(fp, ttc_index);
+ } else {
+ sfont = sfnt_open(fp);
+ }
+
+ if (!sfont) {
+ WARN("Could not open OpenType/TrueType/dfont font file \"%s\"", map_name);
+ RELEASE(cmap_name);
+ DPXFCLOSE(fp);
+ return -1;
+ }
+ switch (sfont->type) {
+ case SFNT_TYPE_TTC:
+ offset = ttc_read_offset(sfont, ttc_index);
+ if (offset == 0) {
+ WARN("Invalid TTC index for font \"%s\": %d", map_name, ttc_index);
+ sfnt_close(sfont);
+ DPXFCLOSE(fp);
+ RELEASE(cmap_name);
+ return -1;
+ }
+ break;
+ case SFNT_TYPE_TRUETYPE:
+ case SFNT_TYPE_POSTSCRIPT:
+ offset = 0;
+ break;
+ case SFNT_TYPE_DFONT:
+ offset = sfont->offset;
+ break;
+ default:
+ WARN("Not a OpenType/TrueType/TTC font?: %s", map_name);
+ sfnt_close(sfont);
+ DPXFCLOSE(fp);
+ RELEASE(cmap_name);
+ return -1;
+ }
+
+ if (sfnt_read_table_directory(sfont, offset) < 0) {
+ WARN("Could not read OpenType/TrueType table directory: %s", map_name);
+ sfnt_close(sfont);
+ DPXFCLOSE(fp);
+ RELEASE(cmap_name);
+ return -1;
+ }
+ if (sfont->type != SFNT_TYPE_POSTSCRIPT) {
+ RELEASE(cmap_name);
+ sfnt_close(sfont);
+ DPXFCLOSE(fp);
+ return -1;
+ }
+
+ /* Read GID-to-CID mapping if CFF OpenType is found. */
+ if (sfont->type == SFNT_TYPE_POSTSCRIPT) {
+ cff_font *cffont;
+ struct tt_maxp_table *maxp;
+ const unsigned char csrange[4] = {0x00, 0x00, 0xff, 0xff};
+ uint16_t num_glyphs = 0;
+
+ maxp = tt_read_maxp_table(sfont);
+ num_glyphs = (card16) maxp->numGlyphs;
+ RELEASE(maxp);
+
+ offset = sfnt_find_table_pos(sfont, "CFF ");
+ if (offset == 0) {
+ WARN("PS OpenType but no \"CFF \" table.. Maybe variable font? (not supported)");
+ RELEASE(cmap_name);
+ sfnt_close(sfont);
+ DPXFCLOSE(fp);
+ return -1;
+ }
+ cffont = cff_open(sfont->stream, offset, 0);
+ if (cffont && cffont->flag & FONTTYPE_CIDFONT) {
+ CMap *cmap;
+ uint16_t gid;
+ uint16_t *GIDToCIDMap = NULL;
+ CIDSysInfo csi = {NULL, NULL, 0};
+
+ if (!cff_dict_known(cffont->topdict, "ROS")) {
+ csi.registry = strdup("Adobe");
+ csi.ordering = strdup("Identity");
+ csi.supplement = 0;
+ } else {
+ card16 reg, ord;
+
+ reg = (card16) cff_dict_get(cffont->topdict, "ROS", 0);
+ ord = (card16) cff_dict_get(cffont->topdict, "ROS", 1);
+ csi.registry = cff_get_string(cffont, reg);
+ csi.ordering = cff_get_string(cffont, ord);
+ csi.supplement = (int) cff_dict_get(cffont->topdict, "ROS", 2);
+ }
+ cff_read_charsets(cffont);
+ GIDToCIDMap = NEW(num_glyphs, uint16_t);
+ memset(GIDToCIDMap, 0, num_glyphs*sizeof(uint16_t));
+ create_GIDToCIDMap(GIDToCIDMap, num_glyphs, cffont);
+ cmap = CMap_new();
+ CMap_set_name (cmap, cmap_name);
+ CMap_set_type (cmap, CMAP_TYPE_CODE_TO_CID);
+ CMap_set_wmode(cmap, wmode);
+ CMap_add_codespacerange(cmap, &csrange[0], &csrange[2], 2);
+ CMap_set_CIDSysInfo(cmap, &csi);
+ for (gid = 0; gid < num_glyphs; gid++) {
+ unsigned char src[2], dst[2];
+ src[0] = (gid >> 8) & 0xff;
+ src[1] = gid & 0xff;
+ dst[0] = (GIDToCIDMap[gid] >> 8) & 0xff;
+ dst[1] = GIDToCIDMap[gid] & 0xff;
+ CMap_add_bfchar(cmap, src, 2, dst, 2);
+ }
+ cmap_id = CMap_cache_add(cmap);
+ if (dpx_conf.verbose_level > VERBOSE_LEVEL_MIN) {
+ MESG("\n");
+ MESG("otf_cmap>> Creating GID-to-CID mapping for font=\"%s\"\n", map_name);
+ }
+ RELEASE(GIDToCIDMap);
+ if (csi.registry)
+ RELEASE(csi.registry);
+ if (csi.ordering)
+ RELEASE(csi.ordering);
+ }
+ if (cffont)
+ cff_close(cffont);
+ }
+
+ RELEASE(cmap_name);
+ sfnt_close(sfont);
+ DPXFCLOSE(fp);
+
+ return cmap_id;
+}