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/* ttftotype42.cc -- driver for translating TrueType fonts to Type 42 fonts
*
* Copyright (c) 2006-2013 Eddie Kohler
*
* 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.
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <efont/t1rw.hh>
#include <efont/t1font.hh>
#include <efont/t1item.hh>
#include <lcdf/clp.h>
#include <lcdf/error.hh>
#include <efont/cff.hh>
#include <efont/otf.hh>
#include <efont/otfname.hh>
#include <efont/otfpost.hh>
#include <efont/otfcmap.hh>
#include <efont/ttfcs.hh>
#include <lcdf/md5.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <stdarg.h>
#include <ctype.h>
#include <errno.h>
#include <math.h>
#ifdef HAVE_CTIME
# include <time.h>
#endif
#if defined(_MSDOS) || defined(_WIN32)
# include <fcntl.h>
# include <io.h>
#endif
using namespace Efont;
#define VERSION_OPT 301
#define HELP_OPT 302
#define QUIET_OPT 303
#define OUTPUT_OPT 306
const Clp_Option options[] = {
{ "help", 'h', HELP_OPT, 0, 0 },
{ "output", 'o', OUTPUT_OPT, Clp_ValString, 0 },
{ "quiet", 'q', QUIET_OPT, 0, Clp_Negate },
{ "version", 'v', VERSION_OPT, 0, 0 },
};
static const char *program_name;
void
usage_error(ErrorHandler *errh, const char *error_message, ...)
{
va_list val;
va_start(val, error_message);
if (!error_message)
errh->message("Usage: %s [OPTIONS] [FONTFILE [OUTPUTFILE]]", program_name);
else
errh->vxmessage(ErrorHandler::e_error, error_message, val);
errh->message("Type %s --help for more information.", program_name);
exit(1);
}
void
usage()
{
FileErrorHandler uerrh(stdout);
uerrh.message("\
%<Ttftotype42%> translates a TrueType or TrueType-flavored OpenType font into\n\
PostScript Type 42 format, which is suitable for inclusion in PostScript\n\
files. The result is usually written to the standard output.\n\
\n\
Usage: %s [OPTIONS] [FONTFILE [OUTPUTFILE]]\n\
\n\
Options:\n\
-o, --output=FILE Write output to FILE.\n\
-q, --quiet Do not generate any error messages.\n\
-h, --help Print this message and exit.\n\
-v, --version Print version number and exit.\n\
\n\
Report bugs to <ekohler@gmail.com>.\n", program_name);
}
// MAIN
// This is the list of tables Adobe recommends be included from the source TTF,
// plus the 'cmap' table, which helps to make PDF results searchable.
static const char * const t42_tables[] = {
"cmap", "cvt ", "fpgm", "glyf", "head", "hhea", "hmtx",
"loca", "maxp", "prep", "vhea", "vmtx", 0
};
struct NameId {
const char *name;
int nameid;
};
static const NameId fontinfo_names[] = {
{ "version", OpenType::Name::N_VERSION },
{ "Notice", OpenType::Name::N_TRADEMARK },
{ "Copyright", OpenType::Name::N_COPYRIGHT },
{ "FullName", OpenType::Name::N_FULLNAME },
{ "FamilyName", OpenType::Name::N_FAMILY },
{ "Weight", OpenType::Name::N_SUBFAMILY },
{ 0, 0 }
};
static void
fprint_sfnts(FILE *f, const String &data, bool glyf, const OpenType::Font &font)
{
if (glyf && data.length() >= 65535) {
OpenType::Data head = font.table("head");
OpenType::Data loca = font.table("loca");
bool loca_long = (head.length() >= 52 && head.u16(50) != 0);
int loca_size = (loca_long ? 4 : 2);
uint32_t first_offset = 0;
for (int i = 1; i * loca_size < loca.length(); i++) {
uint32_t next_offset = (loca_long ? loca.u32(4*i) : loca.u16(2*i) * 2);
if (next_offset - first_offset >= 65535) {
uint32_t prev_offset = (loca_long ? loca.u32(4*i - 4) : loca.u16(2*i - 2) * 2);
fprint_sfnts(f, data.substring(first_offset, prev_offset - first_offset), false, font);
first_offset = prev_offset;
}
}
fprint_sfnts(f, data.substring(first_offset), false, font);
return;
} else if (data.length() >= 65535) {
for (int offset = 0; offset < data.length(); ) {
int next_offset = offset + 65534;
if (next_offset > data.length())
next_offset = data.length();
fprint_sfnts(f, data.substring(offset, next_offset - offset), false, font);
offset = next_offset;
}
return;
}
fputc('<', f);
const uint8_t *s = data.udata();
for (int i = 0; i < data.length(); i++) {
if (i && (i % 38) == 0)
fputc('\n', f);
fputc("0123456789ABCDEF"[(s[i] >> 4) & 0xF], f);
fputc("0123456789ABCDEF"[s[i] & 0xF], f);
}
if ((data.length() % 38) == 0)
fputc('\n', f);
fputs("00>\n", f);
}
static void
do_file(const char *infn, const char *outfn, ErrorHandler *errh)
{
FILE *f;
if (!infn || strcmp(infn, "-") == 0) {
f = stdin;
infn = "<stdin>";
#if defined(_MSDOS) || defined(_WIN32)
_setmode(_fileno(f), _O_BINARY);
#endif
} else if (!(f = fopen(infn, "rb")))
errh->fatal("%s: %s", infn, strerror(errno));
int c = getc(f);
ungetc(c, f);
if (c == EOF)
errh->fatal("%s: empty file", infn);
StringAccum sa(150000);
int amt;
do {
if (char *x = sa.reserve(32768)) {
amt = fread(x, 1, 32768, f);
sa.adjust_length(amt);
} else
amt = 0;
} while (amt != 0);
if (!feof(f) || ferror(f))
errh->error("%s: %s", infn, strerror(errno));
if (f != stdin)
fclose(f);
LandmarkErrorHandler cerrh(errh, infn);
OpenType::Font otf(sa.take_string(), &cerrh);
if (!otf.ok() || !otf.check_checksums(&cerrh))
return;
if (otf.table("CFF"))
cerrh.fatal("CFF-flavored OpenType font not suitable for Type 42");
OpenType::Name name(otf.table("name"), &cerrh);
OpenType::Data head_data = otf.table("head");
if (!otf.table("glyf") || head_data.length() <= 52 || !name.ok())
cerrh.fatal("font appears to lack required tables");
// create reduced font
Vector<OpenType::Tag> tags;
Vector<String> tables;
for (const char * const *table = t42_tables; *table; table++)
if (String s = otf.table(*table)) {
tags.push_back(*table);
tables.push_back(s);
}
OpenType::Font reduced_font = OpenType::Font::make(true, tags, tables);
// output file
if (!outfn || strcmp(outfn, "-") == 0) {
f = stdout;
outfn = "<stdout>";
#if defined(_MSDOS) || defined(_WIN32)
_setmode(_fileno(f), _O_BINARY);
#endif
} else if (!(f = fopen(outfn, "wb")))
errh->fatal("%s: %s", outfn, strerror(errno));
// fprintf(f, "%%!\n");
// get glyph names
TrueTypeBoundsCharstringProgram ttbprog(&otf);
Vector<PermString> gn;
ttbprog.glyph_names(gn);
OpenType::Post post(otf.table("post"));
OpenType::Cmap cmap(otf.table("cmap"));
double emunits = head_data.u16(18);
// font opener
fprintf(f, "%%!PS-TrueTypeFont-65536-%u-1\n", head_data.u32(4));
if (post.ok())
fprintf(f, "%%%%VMusage: %u %u\n", post.mem_type42(false), post.mem_type42(true));
fprintf(f, "11 dict begin\n");
fprintf(f, "/FontName /%s def\n", name.english_name(OpenType::Name::N_POSTSCRIPT).c_str());
fprintf(f, "/FontType 42 def\n");
fprintf(f, "/FontMatrix [1 0 0 1 0 0] def\n");
fprintf(f, "/FontBBox [%g %g %g %g] readonly def\n",
/* head_data.s16(36), head_data.s16(38),
head_data.s16(40), head_data.s16(42)); */
head_data.s16(36) / emunits, head_data.s16(38) / emunits,
head_data.s16(40) / emunits, head_data.s16(42) / emunits);
fprintf(f, "/PaintType 0 def\n");
// XUID (MD5 sum of font data)
{
MD5_CONTEXT md5;
md5_init(&md5);
md5_update(&md5, (const unsigned char *) reduced_font.data(), reduced_font.length());
unsigned char result[MD5_DIGEST_SIZE + 3];
memset(result, 0, sizeof(result));
md5_final(result, &md5);
fprintf(f, "/XUID [42");
for (int i = 0; i < MD5_DIGEST_SIZE; i += 3)
fprintf(f, " 16#%X", result[i] + result[i+1]*256 + result[i+2]*256*256);
fprintf(f, "] def\n");
}
// FontInfo dictionary
fprintf(f, "/FontInfo 10 dict dup begin\n");
for (const NameId *n = fontinfo_names; n->name; n++)
if (String s = name.english_name(n->nameid)) {
fprintf(f, "/%s (", n->name);
for (const char *x = s.begin(); x < s.end(); x++)
if (*x == '(' || *x == '\\' || *x == ')')
fprintf(f, "\\%c", *x);
else if (*x == '\n' || (*x >= ' ' && *x <= '~'))
fputc(*x, f);
else
fprintf(f, "\\%03o", (unsigned char) *x);
fprintf(f, ") readonly def\n");
}
if (post.ok()) {
fprintf(f, "/isFixedPitch %s def\n", (post.is_fixed_pitch() ? "true" : "false"));
fprintf(f, "/ItalicAngle %g def\n", post.italic_angle());
fprintf(f, "/UnderlinePosition %g def\n", (post.underline_position() - (post.underline_thickness() / 2)) / emunits);
fprintf(f, "/UnderlineThickness %g def\n", post.underline_thickness() / emunits);
}
fprintf(f, "end readonly def\n");
// encoding
fprintf(f, "/Encoding 256 array\n0 1 255{1 index exch/.notdef put}for\n");
for (int i = 0; i < 256; i++)
if (OpenType::Glyph g = cmap.map_uni(i))
fprintf(f, "dup %d /%s put\n", i, gn[g].c_str());
fprintf(f, "readonly def\n");
// print 'sfnts' array
OpenType::Data sfnts = reduced_font.data_string();
fprintf(f, "/sfnts[\n");
fprint_sfnts(f, sfnts.substring(0, OpenType::Font::HEADER_SIZE + OpenType::Font::TABLE_DIR_ENTRY_SIZE * reduced_font.ntables()), false, reduced_font);
for (int i = 0; i < reduced_font.ntables(); i++) {
int off = OpenType::Font::HEADER_SIZE + OpenType::Font::TABLE_DIR_ENTRY_SIZE * i;
uint32_t offset = sfnts.u32(off + 8);
uint32_t length = (sfnts.u32(off + 12) + 3) & ~3;
fprint_sfnts(f, sfnts.substring(offset, length), sfnts.u32(off) == 0x676C7966 /*glyf*/, reduced_font);
}
fprintf(f, "] def\n");
// print CharStrings data
fprintf(f, "/CharStrings %d dict dup begin\n", ttbprog.nglyphs());
for (int i = 0; i < gn.size(); i++)
fprintf(f, "/%s %d def\n", gn[i].c_str(), i);
fprintf(f, "end readonly def\n");
// complete font
fprintf(f, "FontName currentdict end definefont pop\n");
// fprintf(f, "/%s 100 selectfont 30 30 moveto (Hello! 9) show showpage\n", name.english_name(OpenType::Name::N_POSTSCRIPT).c_str());
if (f != stdout)
fclose(f);
}
#if 0
static void check_md5sum() {
MD5_CONTEXT md5;
md5_init(&md5);
md5_update(&md5, (const unsigned char *) "message digest", 14);
unsigned char result[MD5_DIGEST_SIZE];
md5_final(result, &md5);
assert(memcmp(result, "\xF9\x6B\x69\x7D\x7C\xB7\x93\x8D\x52\x5A\x2F\x31\xAA\xF1\x61\xD0", MD5_DIGEST_SIZE) == 0);
}
#endif
int
main(int argc, char *argv[])
{
Clp_Parser *clp =
Clp_NewParser(argc, (const char * const *)argv, sizeof(options) / sizeof(options[0]), options);
program_name = Clp_ProgramName(clp);
ErrorHandler *errh = ErrorHandler::static_initialize(new FileErrorHandler(stderr, String(program_name) + ": "));
const char *input_file = 0;
const char *output_file = 0;
while (1) {
int opt = Clp_Next(clp);
switch (opt) {
case QUIET_OPT:
if (clp->negated)
errh = ErrorHandler::default_handler();
else
errh = new SilentErrorHandler;
break;
case VERSION_OPT:
printf("ttftotype42 (LCDF typetools) %s\n", VERSION);
printf("Copyright (C) 2006-2014 Eddie Kohler\n\
This is free software; see the source for copying conditions.\n\
There is NO warranty, not even for merchantability or fitness for a\n\
particular purpose.\n");
exit(0);
break;
case HELP_OPT:
usage();
exit(0);
break;
case OUTPUT_OPT:
output_file:
if (output_file)
usage_error(errh, "output file specified twice");
output_file = clp->vstr;
break;
case Clp_NotOption:
if (input_file && output_file)
usage_error(errh, "too many arguments");
else if (input_file)
goto output_file;
else
input_file = clp->vstr;
break;
case Clp_Done:
goto done;
case Clp_BadOption:
usage_error(errh, 0);
break;
default:
break;
}
}
done:
do_file(input_file, output_file, errh);
return (errh->nerrors() == 0 ? 0 : 1);
}
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