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
|
#ifndef lint
static char *rcs = "$Header: tfm2ofont.c,v 1.1 88/01/15 13:05:54 simpson Rel $";
#endif
/*
$Log: tfm2ofont.c,v $
* Revision 1.1 88/01/15 13:05:54 simpson
* initial release
*
* Revision 0.1 87/12/11 18:31:26 simpson
* beta test
*
*/
#include <stdio.h>
#include <ctype.h>
#include <local/standard.h>
#include "constants.h"
extern char RegularOrder[], SpecialOrder[]; /* Order we want to output */
char OutputFile[81];
char TfmName[81]; /* Only used in error routine */
char *WhoAmI; /* Argv[0] */
char *Usage = "Usage: %s [-s] file...\n";
Boolean Special = FALSE; /* Designates whether font is special */
int ExitStatus = SUCCEED;
main(argc, argv)
int argc;
char *argv[];
{
extern int optind;
extern char *optarg;
int c;
FILE *infile, *outfile;
void seteoffunction(), tfmeofsoexit(), convert();
char *strcpy(), *strcat(), *strncat();
WhoAmI = argv[0];
while ((c = getopt(argc, argv, "s")) != EOF)
switch (c) {
case 's':
Special = TRUE;
break;
case '?':
fprintf(stderr, Usage, WhoAmI);
exit(FAIL);
}
seteoffunction(tfmeofsoexit);
for (; optind < argc; optind++) {
if (strlen(argv[optind]) < 5 || !EQ(".tfm", &argv[optind][strlen(
argv[optind])-4])) {
fprintf(stderr, "%s: invalid input file name %s\n", WhoAmI,
argv[optind]);
ExitStatus = FAIL;
continue;
}
if (!(infile = fopen(argv[optind], "r"))) {
fprintf(stderr, "%s: cannot open input file %s\n", WhoAmI,
argv[optind]);
ExitStatus = FAIL;
continue;
}
(void)strcpy(TfmName, argv[optind]);
(void)strcpy(OutputFile, "ft");
(void)strncat(OutputFile, argv[optind], strlen(argv[optind])-4);
(void)strcat(OutputFile, ".c");
if (!(outfile = fopen(OutputFile, "w"))) {
fprintf(stderr, "%s: cannot open output file %s\n", WhoAmI,
OutputFile);
ExitStatus = FAIL;
continue;
}
convert(infile, outfile, argv[optind]);
(void)fclose(infile), (void)fclose(outfile);
}
exit(ExitStatus);
}
/* The main routine which converts a tfm file to an otroff width table file.
*/
void convert(infile, outfile, inname)
FILE *infile, *outfile;
char *inname;
{
long aheight, i, j, widthindex, heightanddepth, zero, height,
depth, charpos;
long widths[256][2]; /* Width of char in FIX/designsize & kern */
unsigned long uinteger(), lh, bc, ec, nw, nh, designsize;
long integer(), getaheight();
fprintf(outfile, "char font[256-32] = {\n");
if ((aheight = getaheight(infile)) == MAX_INTEGER) {
fprintf(stderr, "%s: no letter 'a' in file %s\n", WhoAmI, inname);
fprintf(stderr, "\tsetting height to zero\n");
aheight = 0;
}
rewind(infile);
bzero((char *)widths, sizeof(widths));
(void)uinteger(infile, 2); /* lf */
lh = uinteger(infile, 2);
bc = uinteger(infile, 2);
ec = uinteger(infile, 2);
nw = uinteger(infile, 2);
nh = uinteger(infile, 2);
(void)uinteger(infile, 2); /* nd */
(void)uinteger(infile, 2); /* ni */
(void)uinteger(infile, 2); /* nl */
(void)uinteger(infile, 2); /* nk */
(void)uinteger(infile, 2); /* ne */
(void)uinteger(infile, 2); /* np */
(void)uinteger(infile, 4); /* Skip checksum */
designsize = uinteger(infile, 4) / FIX;
for (i = bc; i <= ec; i++) {
(void)fseek(infile, 24L + 4 * lh + (i - bc) * 4, 0);
widthindex = uinteger(infile, 1);
heightanddepth = uinteger(infile, 1);
if (widthindex == 0)
continue;
(void)fseek(infile, 24L + 4 * lh + (ec - bc + 1) * 4 + widthindex
* 4, 0);
widths[i][0] = integer(infile, 4);
(void)fseek(infile, 24L + 4 * lh + (ec - bc + 1) * 4 + nw * 4 +
(heightanddepth >> 4) * 4, 0);
height = uinteger(infile, 4);
(void)fseek(infile, 24L + 4 * lh + (ec - bc + 1) * 4 + nw * 4 +
nh * 4 + (heightanddepth & 0xF) * 4, 0);
depth = uinteger(infile, 4);
if (!Special && isalnum(i) || Special && (0101 <= i && i <= 0130
|| 0141 <= i && i <= 0170 || i == 014 || i == 050)) {
if (height > aheight) /* Letters taller than 'a' get 0200 */
widths[i][1] |= 0200; /* turned on. */
if (depth > 0) /* Letters below baseline get 0100 */
widths[i][1] |= 0100; /* turned on. */
}
}
for (i = 040, zero = 0; i < 256; i++) {
if (i == 0177 && !Special) { /* 1/16em is always 6 units */
if (zero) {
zero = 0;
putc('\n', outfile);
}
fprintf(outfile, "6,\n");
continue;
}
if (i == 0226 && !Special) { /* 1/12em is always 3 units */
if (zero) {
zero = 0;
putc('\n', outfile);
}
fprintf(outfile, "3,\n");
continue;
}
if (i == ' ' && !Special) { /* Space is always 12 units */
if (zero) {
zero = 0;
putc('\n', outfile);
}
fprintf(outfile, "12,\n");
continue;
}
charpos = (Special ? SpecialOrder[i - 32] : RegularOrder[i - 32]);
if (charpos == 0 || widths[charpos][0] == 0) {
fprintf(outfile, "0,");
zero++;
if (!((i+1)%8)) {
putc('\n', outfile);
zero = 0;
}
} else {
if (zero) {
zero = 0;
putc('\n', outfile);
}
j = ROUND((widths[charpos][0] / (double)FIX * designsize) / PPI
* 254.6457);
/* Don't ask where the 254.6457 came from. I haven't the faintest
* notion why troff uses this constant, but it works, and that
* is fine enough with me. Otroff can't handle widths over
* 63 (2^6). If you give it something greater, it take the
* lower six bits. This screws up the TRW logo which is 79 but
* there is nothing we can do.
*/
fprintf(outfile, "%d", j > 63 ? 63 : j);
if (widths[charpos][1])
fprintf(outfile, "+0%o,\n", widths[charpos][1]);
else
fprintf(outfile, ",\n");
}
}
fprintf(outfile, "};\n");
}
/* Returns the height of the letter 'a' in the font passed as a parameter.
* The height is returned in FIXes/designsize. If the letter 'a' is not
* found, MAX_INTEGER is returned.
*/
long getaheight(in)
FILE *in;
{
unsigned long lh, bc, ec, nw, uinteger();
(void)fseek(in, 0L, 0);
(void)uinteger(in, 2); /* lf */
lh = uinteger(in, 2);
bc = uinteger(in, 2);
ec = uinteger(in, 2);
nw = uinteger(in, 2);
(void)uinteger(in, 2); /* nh */
(void)uinteger(in, 2); /* nd */
(void)uinteger(in, 2); /* ni */
(void)uinteger(in, 2); /* nl */
(void)uinteger(in, 2); /* nk */
(void)uinteger(in, 2); /* ne */
(void)uinteger(in, 2); /* np */
if (bc > 'a' || ec < 'a')
return MAX_INTEGER;
(void)uinteger(in, 4); /* Skip checksum */
(void)uinteger(in, 4); /* Width */
(void)fseek(in, 24L + lh*4 + ('a'-bc)*4, 0);
if (uinteger(in, 1) == 0)
return MAX_INTEGER;
(void)fseek(in, 24L + lh*4 + (ec-bc+1)*4 + nw*4 + (uinteger(in,1) >> 4)*4,
0);
return uinteger(in, 4);
}
void tfmeofsoexit()
{
fprintf(stderr, "%s: unexpected end of tfm file %s\n", WhoAmI, TfmName);
exit(FAIL);
}
|
