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jjgod/0001-Fix-CID-keyed-fonts-glyph-lookup.patch

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Patch to dvipdfm-x for CID-keyed font support
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0001-Fix-CID-keyed-fonts-glyph-lookup.patch
From 759df18a9c8ec05c6830687682c57d9e4c6a55d3 Mon Sep 17 00:00:00 2001
From: Jiang Jiang <gzjjgod@gmail.com>
Date: Sat, 26 Jul 2014 21:33:19 +0200
Subject: [PATCH 1/3] Fix CID-keyed fonts glyph lookup
Keep cff_charsets parsed from CID font around if exists. Use the
cff_charsets to do GID -> CID lookup.
---
texk/dvipdfm-x/cff.c | 14 ++++++++------
texk/dvipdfm-x/cff.h | 1 +
texk/dvipdfm-x/cid.c | 3 +++
texk/dvipdfm-x/cid_p.h | 1 +
texk/dvipdfm-x/cidtype0.c | 4 ++++
texk/dvipdfm-x/fontmap.c | 4 ++++
texk/dvipdfm-x/fontmap.h | 2 ++
texk/dvipdfm-x/pdfdev.c | 29 ++++++++++++++++++++++++++++-
8 files changed, 51 insertions(+), 7 deletions(-)
diff --git a/texk/dvipdfm-x/cff.c b/texk/dvipdfm-x/cff.c
index 52aaab4..b576a8b 100644
--- a/texk/dvipdfm-x/cff.c
+++ b/texk/dvipdfm-x/cff.c
@@ -1099,10 +1099,6 @@ cff_charsets_lookup (cff_font *cff, card16 cid)
card16
cff_charsets_lookup_inverse (cff_font *cff, card16 gid)
{
- card16 sid = 0;
- cff_charsets *charset;
- card16 i;
-
if (cff->flag & (CHARSETS_ISOADOBE|CHARSETS_EXPERT|CHARSETS_EXPSUB)) {
ERROR("Predefined CFF charsets not supported yet");
} else if (cff->charsets == NULL) {
@@ -1113,9 +1109,15 @@ cff_charsets_lookup_inverse (cff_font *cff, card16 gid)
return 0; /* .notdef */
}
- charset = cff->charsets;
+ return cff_charsets_lookup_cid(cff->charsets, gid);
+}
+
+card16
+cff_charsets_lookup_cid(cff_charsets *charset, card16 gid)
+{
+ card16 sid = 0;
+ card16 i;
- sid = 0;
switch (charset->format) {
case 0:
if (gid - 1 >= charset->num_entries)
diff --git a/texk/dvipdfm-x/cff.h b/texk/dvipdfm-x/cff.h
index 41c4c06..f495b9f 100644
--- a/texk/dvipdfm-x/cff.h
+++ b/texk/dvipdfm-x/cff.h
@@ -122,6 +122,7 @@ extern card16 cff_charsets_lookup (cff_font *cff, card16 cid);
extern void cff_release_charsets (cff_charsets *charset);
/* Returns SID or CID */
extern card16 cff_charsets_lookup_inverse (cff_font *cff, card16 gid);
+extern card16 cff_charsets_lookup_cid(cff_charsets *charset, card16 gid);
/* FDSelect */
extern long cff_read_fdselect (cff_font *cff);
diff --git a/texk/dvipdfm-x/cid.c b/texk/dvipdfm-x/cid.c
index 4d80097..b82a3b7 100644
--- a/texk/dvipdfm-x/cid.c
+++ b/texk/dvipdfm-x/cid.c
@@ -569,6 +569,7 @@ CIDFont_cache_find (const char *map_name,
opt->name = NULL;
opt->csi = get_cidsysinfo(map_name, fmap_opt);
opt->stemv = fmap_opt->stemv;
+ opt->cff_charsets = NULL;
if (!opt->csi && cmap_csi) {
/*
@@ -648,6 +649,8 @@ CIDFont_cache_find (const char *map_name,
font->options = opt;
__cache->fonts[font_id] = font;
(__cache->num)++;
+
+ fmap_opt->cff_charsets = opt->cff_charsets;
}
} else if (opt) {
release_opt(opt);
diff --git a/texk/dvipdfm-x/cid_p.h b/texk/dvipdfm-x/cid_p.h
index 80d2133..fb409b6 100644
--- a/texk/dvipdfm-x/cid_p.h
+++ b/texk/dvipdfm-x/cid_p.h
@@ -42,6 +42,7 @@ typedef struct
int style;
int embed;
int stemv;
+ void *cff_charsets;
} cid_opt;
struct CIDFont
diff --git a/texk/dvipdfm-x/cidtype0.c b/texk/dvipdfm-x/cidtype0.c
index f8e6747..1605a53 100644
--- a/texk/dvipdfm-x/cidtype0.c
+++ b/texk/dvipdfm-x/cidtype0.c
@@ -753,6 +753,10 @@ CIDFont_type0_open (CIDFont *font, const char *name,
return -1;
}
+ cff_read_charsets(cffont);
+ opt->cff_charsets = cffont->charsets;
+ cffont->charsets = NULL;
+
csi = NEW(1, CIDSysInfo);
csi->registry =
cff_get_string(cffont, (s_SID)cff_dict_get(cffont->topdict, "ROS", 0));
diff --git a/texk/dvipdfm-x/fontmap.c b/texk/dvipdfm-x/fontmap.c
index acb068e..91c6de7 100644
--- a/texk/dvipdfm-x/fontmap.c
+++ b/texk/dvipdfm-x/fontmap.c
@@ -85,6 +85,8 @@ pdf_init_fontmap_record (fontmap_rec *mrec)
#ifdef XETEX
mrec->opt.ft_face = NULL;
#endif
+
+ mrec->opt.cff_charsets = NULL;
}
void
@@ -154,6 +156,8 @@ pdf_copy_fontmap_record (fontmap_rec *dst, const fontmap_rec *src)
#ifdef XETEX
dst->opt.ft_face = src->opt.ft_face;
#endif
+
+ dst->opt.cff_charsets = src->opt.cff_charsets;
}
diff --git a/texk/dvipdfm-x/fontmap.h b/texk/dvipdfm-x/fontmap.h
index 9ff6a37..f735708 100644
--- a/texk/dvipdfm-x/fontmap.h
+++ b/texk/dvipdfm-x/fontmap.h
@@ -50,6 +50,8 @@ typedef struct fontmap_opt {
char *otl_tags; /* currently unused */
char *tounicode; /* not implemented yet */
+ void *cff_charsets;
+
double design_size; /* unused */
char *charcoll; /* Adobe-Japan1-4, etc. */
diff --git a/texk/dvipdfm-x/pdfdev.c b/texk/dvipdfm-x/pdfdev.c
index 7d27b91..6fa4223 100644
--- a/texk/dvipdfm-x/pdfdev.c
+++ b/texk/dvipdfm-x/pdfdev.c
@@ -52,6 +52,8 @@
#include "pdfdev.h"
+#include "cff.h"
+
static int verbose = 0;
void
@@ -493,6 +495,8 @@ struct dev_font {
int ucs_plane;
int is_unicode;
+
+ cff_charsets *cff_charsets;
};
static struct dev_font *dev_fonts = NULL;
@@ -954,8 +958,26 @@ handle_multibyte_string (struct dev_font *font,
p = *str_ptr;
length = *str_len;
+ if (ctype == -1 && font->cff_charsets) { /* freetype glyph indexes */
+ /* Convert freetype glyph indexes to CID. */
+ const unsigned char *inbuf = p;
+ unsigned char *outbuf = sbuf0;
+ for (i = 0; i < length; i += 2) {
+ unsigned int gid;
+ gid = *inbuf++ << 8;
+ gid += *inbuf++;
+
+ gid = cff_charsets_lookup_cid(font->cff_charsets, gid);
+
+ *outbuf++ = gid >> 8;
+ *outbuf++ = gid & 0xff;
+ }
+
+ p = sbuf0;
+ length = outbuf - sbuf0;
+ }
/* _FIXME_ */
- if (font->is_unicode) { /* UCS-4 */
+ else if (font->is_unicode) { /* UCS-4 */
if (ctype == 1) {
if (length * 4 >= FORMAT_BUF_SIZE) {
WARN("Too long string...");
@@ -1291,8 +1313,11 @@ pdf_close_device (void)
RELEASE(dev_fonts[i].tex_name);
if (dev_fonts[i].resource)
pdf_release_obj(dev_fonts[i].resource);
+ if (dev_fonts[i].cff_charsets)
+ cff_release_charsets(dev_fonts[i].cff_charsets);
dev_fonts[i].tex_name = NULL;
dev_fonts[i].resource = NULL;
+ dev_fonts[i].cff_charsets = NULL;
}
RELEASE(dev_fonts);
}
@@ -1474,6 +1499,8 @@ pdf_dev_locate_font (const char *font_name, spt_t ptsize)
if (font->font_id < 0)
return -1;
+ font->cff_charsets = mrec->opt.cff_charsets;
+
/* We found device font here. */
if (i < num_dev_fonts) {
font->real_font_index = i;
--
2.0.0
Raw
0002-Fix-reverse-CMap-lookup-for-ToUnicode-map-generation.patch
From 9c59afcfb7e08b26a2d49f20acec0e5d1343c81e Mon Sep 17 00:00:00 2001
From: Jiang Jiang <gzjjgod@gmail.com>
Date: Sat, 26 Jul 2014 22:16:41 +0200
Subject: [PATCH 2/3] Fix reverse CMap lookup for ToUnicode map generation
---
texk/dvipdfm-x/pdfdev.c | 9 ++++++
texk/dvipdfm-x/pdffont.c | 18 +++++++++++
texk/dvipdfm-x/pdffont.h | 1 +
texk/dvipdfm-x/tt_cmap.c | 43 ++++++++++++++++++++++---
texk/dvipdfm-x/type0.c | 84 ++++++++++++++++++++++++++++++++++--------------
texk/dvipdfm-x/type0.h | 2 ++
6 files changed, 128 insertions(+), 29 deletions(-)
diff --git a/texk/dvipdfm-x/pdfdev.c b/texk/dvipdfm-x/pdfdev.c
index 6fa4223..b7d2d9a 100644
--- a/texk/dvipdfm-x/pdfdev.c
+++ b/texk/dvipdfm-x/pdfdev.c
@@ -463,6 +463,7 @@ struct dev_font {
pdf_obj *resource;
char *used_chars;
+ char *used_glyphs;
/* Font format:
* simple, composite or bitmap.
@@ -876,6 +877,8 @@ dev_set_font (int font_id)
if (!real_font->resource) {
real_font->resource = pdf_get_font_reference(real_font->font_id);
real_font->used_chars = pdf_get_font_usedchars(real_font->font_id);
+ if (real_font->cff_charsets)
+ real_font->used_glyphs = pdf_get_font_usedglyphs(real_font->font_id);
}
if (!real_font->used_on_this_page) {
@@ -1155,6 +1158,11 @@ pdf_dev_set_string (spt_t xpos, spt_t ypos,
length = instr_len;
if (font->format == PDF_FONTTYPE_COMPOSITE) {
+ if (real_font->used_glyphs != NULL) {
+ for (i = 0; i < length; i += 2)
+ add_to_used_chars2(real_font->used_glyphs,
+ (unsigned short) (str_ptr[i] << 8)|str_ptr[i+1]);
+ }
if (handle_multibyte_string(font, &str_ptr, &length, ctype) < 0) {
ERROR("Error in converting input string...");
return;
@@ -1536,6 +1544,7 @@ pdf_dev_locate_font (const char *font_name, spt_t ptsize)
font->resource = NULL; /* Don't ref obj until font is actually used. */
font->used_chars = NULL;
+ font->used_glyphs = NULL;
font->extend = 1.0;
font->slant = 0.0;
diff --git a/texk/dvipdfm-x/pdffont.c b/texk/dvipdfm-x/pdffont.c
index e25a1cc..f0189d7 100644
--- a/texk/dvipdfm-x/pdffont.c
+++ b/texk/dvipdfm-x/pdffont.c
@@ -334,6 +334,24 @@ pdf_get_font_usedchars (int font_id)
}
}
+char *
+pdf_get_font_usedglyphs (int font_id)
+{
+ pdf_font *font;
+
+ CHECK_ID(font_id);
+
+ font = GET_FONT(font_id);
+ if (font->subtype == PDF_FONT_FONTTYPE_TYPE0) {
+ Type0Font *t0font;
+
+ t0font = Type0Font_cache_get(font->font_id);
+ return Type0Font_get_usedglyphs(t0font);
+ }
+
+ return NULL;
+}
+
int
pdf_get_font_wmode (int font_id)
{
diff --git a/texk/dvipdfm-x/pdffont.h b/texk/dvipdfm-x/pdffont.h
index a833fe8..38ca3a5 100644
--- a/texk/dvipdfm-x/pdffont.h
+++ b/texk/dvipdfm-x/pdffont.h
@@ -63,6 +63,7 @@ extern int pdf_font_findresource (const char *font_name,
extern int pdf_get_font_subtype (int font_id);
extern pdf_obj *pdf_get_font_reference (int font_id);
extern char *pdf_get_font_usedchars (int font_id);
+extern char *pdf_get_font_usedglyphs (int font_id);
#if 0
extern char *pdf_get_font_fontname (int font_id); /* without unique tag */
diff --git a/texk/dvipdfm-x/tt_cmap.c b/texk/dvipdfm-x/tt_cmap.c
index 718e858..f49421e 100644
--- a/texk/dvipdfm-x/tt_cmap.c
+++ b/texk/dvipdfm-x/tt_cmap.c
@@ -941,6 +941,31 @@ handle_subst_glyphs (CMap *cmap,
return count;
}
+static cff_font *
+prepare_CIDFont_from_sfnt(sfnt* sfont)
+{
+ cff_font *cffont;
+ unsigned long offset = 0;
+
+ if (sfont->type != SFNT_TYPE_POSTSCRIPT ||
+ sfnt_read_table_directory(sfont, 0) < 0 ||
+ (offset = sfnt_find_table_pos(sfont, "CFF ")) == 0) {
+ return NULL;
+ }
+
+ cffont = cff_open(sfont->stream, offset, 0);
+ if (!cffont)
+ return NULL;
+
+ if (!(cffont->flag & FONTTYPE_CIDFONT)) {
+ cff_close(cffont);
+ return NULL;
+ }
+
+ cff_read_charsets(cffont);
+ return cffont;
+}
+
static pdf_obj *
create_ToUnicode_cmap4 (struct cmap4 *map,
const char *cmap_name, CMap *cmap_add,
@@ -952,6 +977,7 @@ create_ToUnicode_cmap4 (struct cmap4 *map,
USHORT c0, c1, gid, count, ch;
USHORT i, j, d, segCount;
char used_glyphs_copy[8192];
+ cff_font *cffont = prepare_CIDFont_from_sfnt(sfont);
cmap = CMap_new();
CMap_set_name (cmap, cmap_name);
@@ -979,10 +1005,11 @@ create_ToUnicode_cmap4 (struct cmap4 *map,
map->idDelta[i]) & 0xffff;
}
if (is_used_char2(used_glyphs_copy, gid)) {
+ unsigned int cid = cffont ? cff_charsets_lookup_inverse(cffont, gid) : gid;
count++;
- wbuf[0] = (gid >> 8) & 0xff;
- wbuf[1] = (gid & 0xff);
+ wbuf[0] = (cid >> 8) & 0xff;
+ wbuf[1] = (cid & 0xff);
wbuf[2] = (ch >> 8) & 0xff;
wbuf[3] = ch & 0xff;
@@ -1014,6 +1041,9 @@ create_ToUnicode_cmap4 (struct cmap4 *map,
}
CMap_release(cmap);
+ if (cffont)
+ cff_close(cffont);
+
return stream;
}
@@ -1029,6 +1059,7 @@ create_ToUnicode_cmap12 (struct cmap12 *map,
ULONG i, ch;
USHORT gid, count;
char used_glyphs_copy[8192];
+ cff_font *cffont = prepare_CIDFont_from_sfnt(sfont);
cmap = CMap_new();
CMap_set_name (cmap, cmap_name);
@@ -1049,9 +1080,10 @@ create_ToUnicode_cmap12 (struct cmap12 *map,
d = ch - map->groups[i].startCharCode;
gid = (USHORT) ((map->groups[i].startGlyphID + d) & 0xffff);
if (is_used_char2(used_glyphs_copy, gid)) {
+ unsigned int cid = cffont ? cff_charsets_lookup_inverse(cffont, gid) : gid;
count++;
- wbuf[0] = (gid >> 8) & 0xff;
- wbuf[1] = (gid & 0xff);
+ wbuf[0] = (cid >> 8) & 0xff;
+ wbuf[1] = (cid & 0xff);
len = UC_sput_UTF16BE((long)ch, &p, wbuf+WBUF_SIZE);
CMap_add_bfchar(cmap, wbuf, 2, wbuf+2, len);
@@ -1081,6 +1113,9 @@ create_ToUnicode_cmap12 (struct cmap12 *map,
}
CMap_release(cmap);
+ if (cffont)
+ cff_close(cffont);
+
return stream;
}
diff --git a/texk/dvipdfm-x/type0.c b/texk/dvipdfm-x/type0.c
index ec19577..e1f1fee 100644
--- a/texk/dvipdfm-x/type0.c
+++ b/texk/dvipdfm-x/type0.c
@@ -85,6 +85,7 @@ struct Type0Font {
char *fontname; /* BaseFont */
char *encoding; /* "Identity-H" or "Identity-V" (not ID) */
char *used_chars; /* Used chars (CIDs) */
+ char *used_glyphs; /* Used glyphs (GIDs) */
/*
* Type0 only
@@ -112,6 +113,7 @@ Type0Font_init_font_struct (Type0Font *font)
font->descriptor = NULL;
font->encoding = NULL;
font->used_chars = NULL;
+ font->used_glyphs = NULL;
font->descendant = NULL;
font->wmode = -1;
font->flags = FLAG_NONE;
@@ -131,6 +133,8 @@ Type0Font_clean (Type0Font *font)
ERROR("%s: FontDescriptor unexpected for Type0 font.", TYPE0FONT_DEBUG_STR);
if (!(font->flags & FLAG_USED_CHARS_SHARED) && font->used_chars)
RELEASE(font->used_chars);
+ if (font->used_glyphs)
+ RELEASE(font->used_glyphs);
if (font->encoding)
RELEASE(font->encoding);
if (font->fontname)
@@ -139,6 +143,7 @@ Type0Font_clean (Type0Font *font)
font->indirect = NULL;
font->descriptor = NULL;
font->used_chars = NULL;
+ font->used_glyphs = NULL;
font->encoding = NULL;
font->fontname = NULL;
}
@@ -147,13 +152,45 @@ Type0Font_clean (Type0Font *font)
/* PLEASE FIX THIS */
#include "tt_cmap.h"
+pdf_obj *Type0Font_create_ToUnicode_stream(Type0Font *font) {
+ CIDFont *cidfont = font->descendant;
+ char *used = Type0Font_get_usedglyphs(font);
+ if (!used)
+ used = Type0Font_get_usedchars(font);
+
+ return otf_create_ToUnicode_stream(CIDFont_get_ident(cidfont),
+ CIDFont_get_opt_index(cidfont),
+ used);
+}
+
+/* Try to load ToUnicode CMap from file system first, if not found fallback to
+ * font CMap reverse lookup. */
+pdf_obj *Type0Font_try_load_ToUnicode_stream(Type0Font *font, char *cmap_base) {
+ char *cmap_name = NEW(strlen(cmap_base) + strlen("-UTF-16"), char);
+ pdf_obj *tounicode;
+
+ sprintf(cmap_name, "%s-UTF16", cmap_base);
+ tounicode = pdf_read_ToUnicode_file(cmap_name);
+ if (!tounicode) {
+ sprintf(cmap_name, "%s-UCS2", cmap_base);
+ tounicode = pdf_read_ToUnicode_file(cmap_name);
+ }
+
+ RELEASE(cmap_name);
+
+ if (!tounicode)
+ tounicode = Type0Font_create_ToUnicode_stream(font);
+
+ return tounicode;
+}
+
static void
add_ToUnicode (Type0Font *font)
{
pdf_obj *tounicode;
CIDFont *cidfont;
CIDSysInfo *csi;
- char *cmap_name, *fontname;
+ char *fontname;
/*
* ToUnicode CMap:
@@ -197,39 +234,24 @@ add_ToUnicode (Type0Font *font)
switch (CIDFont_get_subtype(cidfont)) {
case CIDFONT_TYPE2:
/* PLEASE FIX THIS */
- tounicode = otf_create_ToUnicode_stream(CIDFont_get_ident(cidfont),
- CIDFont_get_opt_index(cidfont),
- Type0Font_get_usedchars(font));
+ tounicode = Type0Font_create_ToUnicode_stream(font);
break;
default:
if (CIDFont_get_flag(cidfont, CIDFONT_FLAG_TYPE1C)) { /* FIXME */
- tounicode = otf_create_ToUnicode_stream(CIDFont_get_ident(cidfont),
- CIDFont_get_opt_index(cidfont),
- Type0Font_get_usedchars(font));
+ tounicode = Type0Font_create_ToUnicode_stream(font);
} else if (CIDFont_get_flag(cidfont, CIDFONT_FLAG_TYPE1)) { /* FIXME */
/* Font loader will create ToUnicode and set. */
return;
} else {
- cmap_name = NEW(strlen(fontname) + 7, char);
- sprintf(cmap_name, "%s-UTF16", fontname);
- tounicode = pdf_read_ToUnicode_file(cmap_name);
- if (!tounicode) {
- sprintf(cmap_name, "%s-UCS2", fontname);
- tounicode = pdf_read_ToUnicode_file(cmap_name);
- }
- RELEASE(cmap_name);
+ tounicode = Type0Font_try_load_ToUnicode_stream(font, fontname);
}
break;
}
} else {
- cmap_name = NEW(strlen(csi->registry)+strlen(csi->ordering)+8, char);
- sprintf(cmap_name, "%s-%s-UTF16", csi->registry, csi->ordering);
- tounicode = pdf_read_ToUnicode_file(cmap_name);
- if (!tounicode) {
- sprintf(cmap_name, "%s-%s-UCS2", csi->registry, csi->ordering);
- tounicode = pdf_read_ToUnicode_file(cmap_name);
- }
- RELEASE(cmap_name);
+ char *cmap_base = NEW(strlen(csi->registry) + strlen(csi->ordering) + 2, char);
+ sprintf(cmap_base, "%s-%s", csi->registry, csi->ordering);
+ tounicode = Type0Font_try_load_ToUnicode_stream(font, cmap_base);
+ RELEASE(cmap_base);
}
if (tounicode) {
@@ -304,6 +326,14 @@ Type0Font_get_usedchars (Type0Font *font)
return font->used_chars;
}
+char *
+Type0Font_get_usedglyphs (Type0Font *font)
+{
+ ASSERT(font);
+
+ return font->used_glyphs;
+}
+
pdf_obj *
Type0Font_get_resource (Type0Font *font)
{
@@ -481,6 +511,7 @@ Type0Font_cache_find (const char *map_name, int cmap_id, fontmap_opt *fmap_opt)
*/
font->used_chars = NULL;
+ font->used_glyphs = NULL;
font->flags = FLAG_NONE;
switch (CIDFont_get_subtype(cidfont)) {
@@ -492,11 +523,14 @@ Type0Font_cache_find (const char *map_name, int cmap_id, fontmap_opt *fmap_opt)
/*
* Need used_chars to write W, W2.
*/
- if ((parent_id = CIDFont_get_parent_id(cidfont, wmode ? 0 : 1)) < 0)
+ if ((parent_id = CIDFont_get_parent_id(cidfont, wmode ? 0 : 1)) < 0) {
font->used_chars = new_used_chars2();
- else {
+ if (fmap_opt->cff_charsets)
+ font->used_glyphs = new_used_chars2();
+ } else {
/* Don't allocate new one. */
font->used_chars = Type0Font_get_usedchars(Type0Font_cache_get(parent_id));
+ font->used_glyphs = Type0Font_get_usedglyphs(Type0Font_cache_get(parent_id));
font->flags |= FLAG_USED_CHARS_SHARED;
}
break;
diff --git a/texk/dvipdfm-x/type0.h b/texk/dvipdfm-x/type0.h
index 817f65d..da75a2e 100644
--- a/texk/dvipdfm-x/type0.h
+++ b/texk/dvipdfm-x/type0.h
@@ -36,6 +36,8 @@ extern char *Type0Font_get_encoding (Type0Font *font);
#endif
extern char *Type0Font_get_usedchars (Type0Font *font);
+extern char *Type0Font_get_usedglyphs (Type0Font *font);
+
extern pdf_obj *Type0Font_get_resource (Type0Font *font);
extern void Type0Font_set_ToUnicode (Type0Font *font, pdf_obj *cmap_ref);
--
2.0.0
Raw
0003-Avoid-read-past-65536-glyphs.patch
From 53e6bc1c0b6dc54c67c55a86254ae444265ed40c Mon Sep 17 00:00:00 2001
From: Jiang Jiang <gzjjgod@gmail.com>
Date: Sat, 26 Jul 2014 22:20:48 +0200
Subject: [PATCH 3/3] Avoid read past 65536 glyphs
---
texk/dvipdfm-x/cff.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/texk/dvipdfm-x/cff.c b/texk/dvipdfm-x/cff.c
index b576a8b..7dd35d4 100644
--- a/texk/dvipdfm-x/cff.c
+++ b/texk/dvipdfm-x/cff.c
@@ -301,9 +301,13 @@ cff_get_index_header (cff_font *cff)
ERROR("invalid offsize data");
idx->offset = NEW(count+1, l_offset);
- for (i=0;i<count+1;i++) {
+ for (i=0;i<count;i++) {
(idx->offset)[i] = get_offset(cff->stream, idx->offsize);
}
+ if (count == 0xFFFF)
+ cff_seek(cff, cff_tell(cff) + idx->offsize);
+ else
+ (idx->offset)[i] = get_offset(cff->stream, idx->offsize);
if (idx->offset[0] != 1)
ERROR("cff_get_index(): invalid index data");
--
2.0.0
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