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/*
This is dvipdfmx, an eXtended version of dvipdfm by Mark A. Wicks.
Copyright (C) 2002-2012 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.
*/
#include "system.h"
#include "error.h"
#include "mem.h"
#include "dpxfile.h"
#include "sfnt.h"
#include "tt_post.h"
static const char *macglyphorder[258];
/* offset from begenning of the post table */
#define NAME_STR_OFFSET 32
static int
read_v2_post_names (struct tt_post_table *post, sfnt *sfont)
{
USHORT i, idx, *indices, maxidx;
int len;
post->numberOfGlyphs = sfnt_get_ushort(sfont);
indices = NEW(post->numberOfGlyphs, USHORT);
maxidx = 257;
for (i = 0;
i < post->numberOfGlyphs; i++) {
idx = sfnt_get_ushort(sfont);
if (idx >= 258) {
if (idx > maxidx)
maxidx = idx;
if (idx > 32767) {
/* Although this is strictly speaking out of spec, it seems to work
and there are real-life fonts that use it.
We show a warning only once, instead of thousands of times */
static char warning_issued = 0;
if (!warning_issued) {
WARN("TrueType post table name index %u > 32767", idx);
warning_issued = 1;
}
/* In a real-life large font, (x)dvipdfmx crashes if we use
nonvanishing idx in the case of idx > 32767.
If we set idx = 0, (x)dvipdfmx works fine for the font and
created pdf seems fine. The post table may not be important
in such a case */
idx = 0;
}
}
indices[i] = idx;
}
post->count = maxidx - 257;
if (post->count < 1) {
post->names = NULL;
} else {
post->names = NEW(post->count, char *);
for (i = 0; i < post->count; i++) { /* read Pascal strings */
len = sfnt_get_byte(sfont);
if (len > 0) {
post->names[i] = NEW(len + 1, char);
sfnt_read((unsigned char*)(post->names[i]), len, sfont);
post->names[i][len] = 0;
} else {
post->names[i] = NULL;
}
}
}
post->glyphNamePtr = NEW(post->numberOfGlyphs, const char *);
for (i = 0; i < post->numberOfGlyphs; i++) {
idx = indices[i];
if (idx < 258) {
post->glyphNamePtr[i] = macglyphorder[idx];
} else if (idx - 258 < post->count) {
post->glyphNamePtr[i] = post->names[idx - 258];
} else {
WARN("Invalid glyph name index number: %u (>= %u)",
idx, post->count + 258);
RELEASE(indices);
return -1;
}
}
RELEASE(indices);
return 0;
}
struct tt_post_table *
tt_read_post_table (sfnt *sfont)
{
struct tt_post_table *post;
/* offset = */ sfnt_locate_table(sfont, "post");
post = NEW(1, struct tt_post_table);
post->Version = sfnt_get_ulong(sfont); /* Fixed */
post->italicAngle = sfnt_get_ulong(sfont); /* Fixed */
post->underlinePosition = sfnt_get_short(sfont); /* FWord */
post->underlineThickness = sfnt_get_short(sfont); /* FWord */
post->isFixedPitch = sfnt_get_ulong(sfont);
post->minMemType42 = sfnt_get_ulong(sfont);
post->maxMemType42 = sfnt_get_ulong(sfont);
post->minMemType1 = sfnt_get_ulong(sfont);
post->maxMemType1 = sfnt_get_ulong(sfont);
post->numberOfGlyphs = 0;
post->glyphNamePtr = NULL;
post->count = 0;
post->names = NULL;
if (post->Version == 0x00010000UL) {
post->numberOfGlyphs = 258; /* wrong */
post->glyphNamePtr = macglyphorder;
post->count = 0;
post->names = NULL;
} else if (post->Version == 0x00025000UL) {
WARN("TrueType 'post' version 2.5 found (deprecated)");
post->numberOfGlyphs = 0; /* wrong */
post->glyphNamePtr = NULL;
post->count = 0;
post->names = NULL;
} else if (post->Version == 0x00020000UL) {
if (read_v2_post_names(post, sfont) < 0) {
WARN("Invalid version 2.0 'post' table");
tt_release_post_table(post);
post = NULL;
}
} else if (post->Version == 0x00030000UL) { /* no glyph names provided */
post->numberOfGlyphs = 0; /* wrong */
post->glyphNamePtr = NULL;
post->count = 0;
post->names = NULL;
} else if (post->Version == 0x00040000UL) { /* Apple format for printer-based fonts */
post->numberOfGlyphs = 0; /* don't bother constructing char names, not sure if they'll ever be needed */
post->glyphNamePtr = NULL;
post->count = 0;
post->names = NULL;
} else {
WARN("Unknown 'post' version: %08X", post->Version);
tt_release_post_table(post);
post = NULL;
}
return post;
}
USHORT
tt_lookup_post_table (struct tt_post_table *post, const char *glyphname)
{
USHORT gid;
ASSERT(post && glyphname);
for (gid = 0; gid < post->count; gid++) {
if (post->glyphNamePtr[gid] &&
!strcmp(glyphname, post->glyphNamePtr[gid])) {
return gid;
}
}
return 0;
}
void
tt_release_post_table (struct tt_post_table *post)
{
USHORT i;
ASSERT(post);
if (post->glyphNamePtr && post->Version != 0x00010000UL)
RELEASE((void *)post->glyphNamePtr);
if (post->names) {
for (i = 0; i < post->count; i++) {
if (post->names[i])
RELEASE(post->names[i]);
}
RELEASE(post->names);
}
post->count = 0;
post->glyphNamePtr = NULL;
post->names = NULL;
RELEASE(post);
return;
}
/* Macintosh glyph order - from apple's TTRefMan */
static const char *
macglyphorder[258] = {
/* 0x0000 */
".notdef", ".null", "nonmarkingreturn", "space", "exclam", "quotedbl",
"numbersign", "dollar", "percent", "ampersand", "quotesingle",
"parenleft", "parenright", "asterisk", "plus", "comma",
/* 0x0010 */
"hyphen", "period", "slash", "zero", "one", "two", "three", "four",
"five", "six", "seven", "eight", "nine", "colon", "semicolon", "less",
/* 0x0020 */
"equal", "greater", "question", "at", "A", "B", "C", "D",
"E", "F", "G", "H", "I", "J", "K", "L",
/* 0x0030 */
"M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X",
"Y", "Z", "bracketleft", "backslash",
/* 0x0040 */
"bracketright", "asciicircum", "underscore", "grave",
"a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l",
/* 0x0050 */
"m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x",
"y", "z", "braceleft", "bar",
/* 0x0060 */
"braceright", "asciitilde", "Adieresis", "Aring", "Ccedilla",
"Eacute", "Ntilde", "Odieresis", "Udieresis", "aacute", "agrave",
"acircumflex", "adieresis", "atilde", "aring", "ccedilla",
/* 0x0070 */
"eacute", "egrave", "ecircumflex", "edieresis", "iacute", "igrave",
"icircumflex", "idieresis", "ntilde", "oacute", "ograve", "ocircumflex",
"odieresis", "otilde", "uacute", "ugrave",
/* 0x0080 */
"ucircumflex", "udieresis", "dagger", "degree", "cent", "sterling",
"section", "bullet", "paragraph", "germandbls", "registered",
"copyright", "trademark", "acute", "dieresis", "notequal",
/* 0x0090 */
"AE", "Oslash", "infinity", "plusminus", "lessequal", "greaterequal",
"yen", "mu", "partialdiff", "summation", "product", "pi", "integral",
"ordfeminine", "ordmasculine", "Omega",
/* 0x00a0 */
"ae", "oslash", "questiondown", "exclamdown", "logicalnot", "radical",
"florin", "approxequal", "Delta", "guillemotleft", "guillemotright",
"ellipsis", "nonbreakingspace", "Agrave", "Atilde", "Otilde",
/* 0x00b0 */
"OE", "oe", "endash", "emdash", "quotedblleft", "quotedblright",
"quoteleft", "quoteright", "divide", "lozenge", "ydieresis",
"Ydieresis", "fraction", "currency", "guilsinglleft", "guilsinglright",
/* 0x00c0 */
"fi", "fl", "daggerdbl", "periodcentered", "quotesinglbase",
"quotedblbase", "perthousand", "Acircumflex", "Ecircumflex", "Aacute",
"Edieresis", "Egrave", "Iacute", "Icircumflex", "Idieresis", "Igrave",
/* 0x00d0 */
"Oacute", "Ocircumflex", "apple", "Ograve", "Uacute", "Ucircumflex",
"Ugrave", "dotlessi", "circumflex", "tilde", "macron", "breve",
"dotaccent", "ring", "cedilla", "hungarumlaut",
/* 0x00e0 */
"ogonek", "caron", "Lslash", "lslash", "Scaron", "scaron", "Zcaron",
"zcaron", "brokenbar", "Eth", "eth", "Yacute", "yacute", "Thorn",
"thorn", "minus",
/* 0x00f0 */
"multiply", "onesuperior", "twosuperior", "threesuperior", "onehalf",
"onequarter", "threequarters", "franc", "Gbreve", "gbreve", "Idotaccent",
"Scedilla", "scedilla", "Cacute", "cacute", "Ccaron",
/* 0x0100 */
"ccaron", "dcroat"
};
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