summaryrefslogtreecommitdiff
path: root/Build/source/texk/lcdf-typetools/lcdf-typetools-src/libefont/t1fontskel.cc
blob: 3b7ee45b50a162980adf287b3e5afc3d53b0dc7e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
/* t1fontskel.cc -- Type 1 font skeleton
 *
 * Copyright (c) 1998-2018 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/t1font.hh>
#include <efont/t1item.hh>
#include <efont/t1rw.hh>
#include <efont/t1mm.hh>
#include <lcdf/error.hh>
#include <string.h>
#include <stdlib.h>
#include <ctype.h>
namespace Efont {

#if HAVE_ADOBE_CODE

static const char* othersubrs_code =
// This version of the OtherSubrs code for old PostScript interpreters comes from
// https://github.com/adobe-type-tools/afdko/blob/master/FDK/Tools/Programs/public/lib/source/t1write/t1write_flexothers.txt
// (commit 3f4eeec). The Adobe Font Development Kit is licensed by the Apache
// License, 2.0, which permits this embedding.
"% Copyright 1987-1990 Adobe Systems Incorporated. All rights reserved.\n"
"/OtherSubrs[systemdict/internaldict known{1183615869 systemdict/internaldict\n"
"get exec/FlxProc known{save true}{false}ifelse}{userdict/internaldict known\n"
"not{userdict/internaldict{count 0 eq{/internaldict errordict/invalidaccess get\n"
"exec}if dup type/integertype ne{/internaldict errordict/invalidaccess get exec\n"
"}if dup 1183615869 eq{pop 0}{/internaldict errordict/invalidaccess get exec}\n"
"ifelse}dup 14 get 1 25 dict put bind executeonly put}if 1183615869 userdict\n"
"/internaldict get exec/FlxProc known{save true}{false}ifelse}ifelse[systemdict\n"
"/internaldict known not{100 dict/begin cvx/mtx matrix/def cvx}if systemdict\n"
"/currentpacking known{currentpacking true setpacking}if{systemdict\n"
"/internaldict known{1183615869 systemdict/internaldict get exec dup/$FlxDict\n"
"known not{dup dup length exch maxlength eq{pop userdict dup/$FlxDict known not\n"
"{100 dict begin/mtx matrix def dup/$FlxDict currentdict put end}if}{100 dict\n"
"begin/mtx matrix def dup/$FlxDict currentdict put end}ifelse}if/$FlxDict get\n"
"begin}if grestore/exdef{exch def}def/dmin exch abs 100 div def/epX exdef/epY\n"
"exdef/c4y2 exdef/c4x2 exdef/c4y1 exdef/c4x1 exdef/c4y0 exdef/c4x0 exdef/c3y2\n"
"exdef/c3x2 exdef/c3y1 exdef/c3x1 exdef/c3y0 exdef/c3x0 exdef/c1y2 exdef/c1x2\n"
"exdef/c2x2 c4x2 def/c2y2 c4y2 def/yflag c1y2 c3y2 sub abs c1x2 c3x2 sub abs gt\n"
"def/PickCoords{{c1x0 c1y0 c1x1 c1y1 c1x2 c1y2 c2x0 c2y0 c2x1 c2y1 c2x2 c2y2}{\n"
"c3x0 c3y0 c3x1 c3y1 c3x2 c3y2 c4x0 c4y0 c4x1 c4y1 c4x2 c4y2}ifelse/y5 exdef/x5\n"
"exdef/y4 exdef/x4 exdef/y3 exdef/x3 exdef/y2 exdef/x2 exdef/y1 exdef/x1 exdef\n"
"/y0 exdef/x0 exdef}def mtx currentmatrix pop mtx 0 get abs 1e-05 lt mtx 3 get\n"
"abs 1e-05 lt or{/flipXY -1 def}{mtx 1 get abs 1e-05 lt mtx 2 get abs 1e-05 lt\n"
"or{/flipXY 1 def}{/flipXY 0 def}ifelse}ifelse/erosion 1 def systemdict\n"
"/internaldict known{1183615869 systemdict/internaldict get exec dup/erosion\n"
"known{/erosion get/erosion exch def}{pop}ifelse}if yflag{flipXY 0 eq c3y2 c4y2\n"
"eq or{false PickCoords}{/shrink c3y2 c4y2 eq{0}{c1y2 c4y2 sub c3y2 c4y2 sub\n"
"div abs}ifelse def/yshrink{c4y2 sub shrink mul c4y2 add}def/c1y0 c3y0 yshrink\n"
"def/c1y1 c3y1 yshrink def/c2y0 c4y0 yshrink def/c2y1 c4y1 yshrink def/c1x0\n"
"c3x0 def/c1x1 c3x1 def/c2x0 c4x0 def/c2x1 c4x1 def/dY 0 c3y2 c1y2 sub round\n"
"dtransform flipXY 1 eq{exch}if pop abs def dY dmin lt PickCoords y2 c1y2 sub\n"
"abs .001 gt{c1x2 c1y2 transform flipXY 1 eq{exch}if/cx exch def/cy exch def/dY\n"
"0 y2 c1y2 sub round dtransform flipXY 1 eq{exch}if pop def dY round dup 0 ne{\n"
"/dY exdef}{pop dY 0 lt{-1}{1}ifelse/dY exdef}ifelse/erode PaintType 2 ne\n"
"erosion .5 ge and def erode{/cy cy .5 sub def}if/ey cy dY add def/ey ey\n"
"ceiling ey sub ey floor add def erode{/ey ey .5 add def}if ey cx flipXY 1 eq{\n"
"exch}if itransform exch pop y2 sub/eShift exch def/y1 y1 eShift add def/y2 y2\n"
"eShift add def/y3 y3 eShift add def}if}ifelse}{flipXY 0 eq c3x2 c4x2 eq or{\n"
"false PickCoords}{/shrink c3x2 c4x2 eq{0}{c1x2 c4x2 sub c3x2 c4x2 sub div abs}\n"
"ifelse def/xshrink{c4x2 sub shrink mul c4x2 add}def/c1x0 c3x0 xshrink def/c1x1\n"
"c3x1 xshrink def/c2x0 c4x0 xshrink def/c2x1 c4x1 xshrink def/c1y0 c3y0 def\n"
"/c1y1 c3y1 def/c2y0 c4y0 def/c2y1 c4y1 def/dX c3x2 c1x2 sub round 0 dtransform\n"
"flipXY -1 eq{exch}if pop abs def dX dmin lt PickCoords x2 c1x2 sub abs .001 gt\n"
"{c1x2 c1y2 transform flipXY -1 eq{exch}if/cy exch def/cx exch def/dX x2 c1x2\n"
"sub round 0 dtransform flipXY -1 eq{exch}if pop def dX round dup 0 ne{/dX\n"
"exdef}{pop dX 0 lt{-1}{1}ifelse/dX exdef}ifelse/erode PaintType 2 ne erosion\n"
".5 ge and def erode{/cx cx .5 sub def}if/ex cx dX add def/ex ex ceiling ex sub\n"
"ex floor add def erode{/ex ex .5 add def}if ex cy flipXY -1 eq{exch}if\n"
"itransform pop x2 sub/eShift exch def/x1 x1 eShift add def/x2 x2 eShift add\n"
"def/x3 x3 eShift add def}if}ifelse}ifelse x2 x5 eq y2 y5 eq or{x5 y5 lineto}{\n"
"x0 y0 x1 y1 x2 y2 curveto x3 y3 x4 y4 x5 y5 curveto}ifelse epY epX}systemdict\n"
"/currentpacking known{exch setpacking}if/exec cvx/end cvx]cvx executeonly exch\n"
"{pop true exch restore}{systemdict/internaldict known not{1183615869 userdict\n"
"/internaldict get exec exch/FlxProc exch put true}{1183615869 systemdict\n"
"/internaldict get exec dup length exch maxlength eq{false}{1183615869\n"
"systemdict/internaldict get exec exch/FlxProc exch put true}ifelse}ifelse}\n"
"ifelse{systemdict/internaldict known{{1183615869 systemdict/internaldict get\n"
"exec/FlxProc get exec}}{{1183615869 userdict/internaldict get exec/FlxProc get\n"
"exec}}ifelse executeonly}if{gsave currentpoint newpath moveto}executeonly{\n"
"currentpoint grestore gsave currentpoint newpath moveto}executeonly{systemdict\n"
"/internaldict known not{pop 3}{1183615869 systemdict/internaldict get exec dup\n"
"/startlock known{/startlock get exec}{dup/strtlck known{/strtlck get exec}{pop\n"
"3}ifelse}ifelse}ifelse}executeonly]def";

#else

static const char* othersubrs_code = "/OtherSubrs\n"
"[\n"
"{pop pop pop grestore 12 6 roll curveto curveto pop pop} executeonly\n"
"{gsave currentpoint newpath moveto} executeonly\n"
"{currentpoint currentpoint newpath moveto} executeonly\n"
"{} executeonly\n"
"] noaccess def";

#endif


Type1Font *
Type1Font::skeleton_make(PermString font_name, const String &version)
{
    Type1Font *output = new Type1Font(font_name);

    // %!PS-Adobe-Font comment
    StringAccum sa;
    sa << "%!PS-AdobeFont-1.0: " << font_name;
    if (version)
        sa << ' ' << version;
    output->add_item(new Type1CopyItem(sa.take_string()));

    output->_dict_deltas[dF] = 3; // Private, FontInfo, Encoding
    output->_dict_deltas[dP] = 3; // OtherSubrs, Subrs, CharStrings

    return output;
}

void
Type1Font::skeleton_comments_end()
{
    // count members of font dictionary
    add_definition(dF, new Type1Definition("FontName", "/" + String(_font_name), "def"));
}

void
Type1Font::skeleton_fontinfo_end()
{
    if (first_dict_item(Type1Font::dFI) >= 0)
        add_item(new Type1CopyItem("end readonly def"));
    else
        add_item(new Type1CopyItem("% no FontInfo dict"));
}

void
Type1Font::skeleton_fontdict_end()
{
    // switch to eexec
    add_item(new Type1CopyItem("currentdict end"));
    add_item(new Type1EexecItem(true));

    // Private dictionary
    add_definition(Type1Font::dP, Type1Definition::make_literal("-|", "{string currentfile exch readstring pop}", "executeonly def"));
    set_charstring_definer(" -| ");
    add_definition(Type1Font::dP, Type1Definition::make_literal("|-", "{noaccess def}", "executeonly def"));
    add_definition(Type1Font::dP, Type1Definition::make_literal("|", "{noaccess put}", "executeonly def"));
}

void
Type1Font::skeleton_private_end()
{
    add_item(new Type1CopyItem(othersubrs_code));

    // Subrs
    add_item(new Type1SubrGroupItem(this, true, "/Subrs 0 array"));
    add_item(new Type1CopyItem("|-"));

    // CharStrings
    add_item(new Type1SubrGroupItem(this, false, "2 index /CharStrings 0 dict dup begin"));

    // completion
    add_item(new Type1CopyItem("end\n\
end\n\
readonly put\n\
noaccess put\n\
dup /FontName get exch definefont pop\n\
mark currentfile closefile"));
    add_item(new Type1EexecItem(false));
    add_item(new Type1CopyItem("\
0000000000000000000000000000000000000000000000000000000000000000\n\
0000000000000000000000000000000000000000000000000000000000000000\n\
0000000000000000000000000000000000000000000000000000000000000000\n\
0000000000000000000000000000000000000000000000000000000000000000\n\
0000000000000000000000000000000000000000000000000000000000000000\n\
0000000000000000000000000000000000000000000000000000000000000000\n\
0000000000000000000000000000000000000000000000000000000000000000\n\
0000000000000000000000000000000000000000000000000000000000000000\n\
cleartomark"));
}

void
Type1Font::skeleton_common_subrs()
{
    // - first four Subrs have fixed definitions
    // - 0: "3 0 callothersubr pop pop setcurrentpoint return"
    set_subr(0, Type1Charstring(String::make_stable("\216\213\014\020\014\021\014\021\014\041\013", 11)), " |");
    // - 1: "0 1 callothersubr return"
    set_subr(1, Type1Charstring(String::make_stable("\213\214\014\020\013", 5)), " |");
    // - 2: "0 2 callothersubr return"
    set_subr(2, Type1Charstring(String::make_stable("\213\215\014\020\013", 5)), " |");
    // - 3: "return"
    set_subr(3, Type1Charstring(String::make_stable("\013", 1)), " |");
    // - 4: "1 3 callothersubr pop callsubr return"
    set_subr(4, Type1Charstring(String::make_stable("\214\216\014\020\014\021\012\013", 8)), " |");
}


static void
add_number_def(Type1Font *output, int dict, PermString name, const Type1Font *font)
{
    double v;
    if (Type1Definition *t1d = font->dict(dict, name))
        if (t1d->value_num(v))
            output->add_definition(dict, Type1Definition::make(name, v, "def"));
}

static void
add_copy_def(Type1Font *output, int dict, PermString name, const Type1Font *font, const char *definer = "def")
{
    if (Type1Definition *t1d = font->dict(dict, name))
        output->add_definition(dict, Type1Definition::make_literal(name, t1d->value(), definer));
}

static String
font_dict_string(const Type1Font *font, int dict, PermString name)
{
    String s;
    if (Type1Definition *d = font->dict(dict, name))
        if (d->value_string(s))
            return s;
    return String();
}

Type1Font *
Type1Font::skeleton_make_copy(const Type1Font *font, PermString font_name, const Vector<double> *xuid_extension)
{
    String version = font_dict_string(font, dFI, "version");
    Type1Font *output = skeleton_make(font_name, version);

    // other comments from font header
    for (int i = 0; i < font->nitems(); i++)
        if (Type1CopyItem *c = font->item(i)->cast_copy()) {
            if (c->length() > 1 && c->value()[0] == '%') {
                if (c->value()[1] != '!')
                    output->add_item(new Type1CopyItem(c->value()));
            } else
                break;
        } else
            break;

    output->skeleton_comments_end();

    // FontInfo dictionary
    if (version)
        output->add_definition(dFI, Type1Definition::make_string("version", version, "readonly def"));
    if (String s = font_dict_string(font, dFI, "Notice"))
        output->add_definition(dFI, Type1Definition::make_string("Notice", s, "readonly def"));
    if (String s = font_dict_string(font, dFI, "Copyright"))
        output->add_definition(dFI, Type1Definition::make_string("Copyright", s, "readonly def"));
    if (String s = font_dict_string(font, dFI, "FullName"))
        output->add_definition(dFI, Type1Definition::make_string("FullName", s, "readonly def"));
    if (String s = font_dict_string(font, dFI, "FamilyName"))
        output->add_definition(dFI, Type1Definition::make_string("FamilyName", s, "readonly def"));
    if (String s = font_dict_string(font, dFI, "Weight"))
        output->add_definition(dFI, Type1Definition::make_string("Weight", s, "readonly def"));
    if (Type1Definition *t1d = font->fi_dict("isFixedPitch")) {
        bool v;
        if (t1d->value_bool(v))
            output->add_definition(dFI, Type1Definition::make_literal("isFixedPitch", (v ? "true" : "false"), "def"));
    }
    add_number_def(output, dFI, "ItalicAngle", font);
    add_number_def(output, dFI, "UnderlinePosition", font);
    add_number_def(output, dFI, "UnderlineThickness", font);
    output->skeleton_fontinfo_end();

    // Encoding, other font dictionary entries
    output->add_type1_encoding(new Type1Encoding(*font->type1_encoding()));
    add_number_def(output, dF, "PaintType", font);
    add_number_def(output, dF, "FontType", font);
    add_copy_def(output, dF, "FontMatrix", font, "readonly def");
    add_number_def(output, dF, "StrokeWidth", font);
    if (!xuid_extension)
        add_number_def(output, dF, "UniqueID", font);
    add_copy_def(output, dF, "XUID", font, "readonly def");
    if (xuid_extension) {
        Vector<double> xuid;
        if (Type1Definition *xuid_def = output->dict("XUID"))
            xuid_def->value_numvec(xuid);
        if (!xuid.size()) {
            Type1Definition *uid_def = font->dict("UniqueID");
            int uid;
            if (uid_def && uid_def->value_int(uid)) {
                xuid.push_back(1);
                xuid.push_back(uid);
            }
        }
        if (xuid.size()) {
            for (int i = 0; i < xuid_extension->size(); i++)
                xuid.push_back((*xuid_extension)[i]);
            Type1Definition *xuid_def = output->ensure(dF, "XUID");
            xuid_def->set_numvec(xuid);
        }
    }
    add_copy_def(output, dF, "FontBBox", font, "readonly def");
    output->skeleton_fontdict_end();

    // Private dictionary
    add_copy_def(output, dP, "BlueValues", font);
    add_copy_def(output, dP, "OtherBlues", font);
    add_copy_def(output, dP, "FamilyBlues", font);
    add_copy_def(output, dP, "FamilyOtherBlues", font);
    add_number_def(output, dP, "BlueScale", font);
    add_number_def(output, dP, "BlueShift", font);
    add_number_def(output, dP, "BlueFuzz", font);
    add_copy_def(output, dP, "StdHW", font);
    add_copy_def(output, dP, "StdVW", font);
    add_copy_def(output, dP, "StemSnapH", font);
    add_copy_def(output, dP, "StemSnapV", font);
    add_copy_def(output, dP, "ForceBold", font);
    add_number_def(output, dP, "LanguageGroup", font);
    add_number_def(output, dP, "ExpansionFactor", font);
    if (!xuid_extension)
        add_number_def(output, dP, "UniqueID", font);
    output->add_definition(dP, Type1Definition::make_literal("MinFeature", "{16 16}", "|-"));
    output->add_definition(dP, Type1Definition::make_literal("password", "5839", "def"));
    output->add_definition(dP, Type1Definition::make_literal("lenIV", "0", "def"));
    output->skeleton_private_end();

    return output;
}

}