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
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
|
/*
pktopbm, adapted from "pktopx in C by Tomas Rokicki" by AJCD 1/8/90
compile with: cc -lpbm -o pktopbm pktopbm.c
*/
#include <stdio.h>
#include <pbm.h>
#define NAMELENGTH 80
#define MAXROWWIDTH 3200
#define MAXPKCHAR 256
#define round(a) ((int)(a+0.5))
typedef int integer ;
typedef unsigned char quarterword ;
typedef char boolean ;
typedef quarterword eightbits ;
typedef FILE *bytefile ;
bytefile pkfile ;
char pkname[NAMELENGTH+1] ;
integer pkloc ;
integer i, j ;
char *filename[MAXPKCHAR] ;
bit **bitmap = NULL ;
integer dynf ;
eightbits inputbyte ;
eightbits bitweight ;
integer repeatcount ;
integer flagbyte ;
add_suffix(name, suffix)
char *name, *suffix ;
{
int haveext = 0;
if (name) {
while (*name) {
if (*name == '/') haveext = 0 ;
else if (*name == '.') haveext = 1 ;
name++ ;
}
if (!haveext) {
*name++ = '.';
strcpy(name,suffix) ;
}
}
}
initialize()
{
integer i ;
fprintf(stderr, "This is PKtoPBM, C Version 2.3\n") ;
for (i = 0 ; i < MAXPKCHAR ; i ++) filename[i] = NULL ;
}
jumpout()
{
exit(1) ;
}
openpkfile()
{
if ((pkfile = fopen(pkname, "r")) == NULL) {
fprintf(stderr, " Can't open pk file %s!\n", pkname) ;
}
pkloc = 0 ;
}
eightbits pkbyte()
{
pkloc++ ;
return(getc(pkfile)) ;
}
integer get16()
{
integer a = pkbyte() ;
return((a<<8) + pkbyte()) ;
}
integer get32()
{
integer a = get16() ;
if (a > 32767) a -= 65536 ;
return((a<<16) + get16()) ;
}
integer getnyb()
{
eightbits temp ;
if (bitweight == 0) {
inputbyte = pkbyte() ;
bitweight = 16 ;
}
temp = inputbyte / bitweight ;
inputbyte -= temp * bitweight ;
bitweight >>= 4 ;
return(temp) ;
}
boolean getbit()
{
boolean temp ;
bitweight >>= 1 ;
if (bitweight == 0) {
inputbyte = pkbyte() ;
bitweight = 128 ;
}
temp = (inputbyte >= bitweight) ;
if (temp) inputbyte -= bitweight ;
return(temp) ;
}
integer pkpackednum()
{
integer i, j ;
i = getnyb() ;
if (i == 0) {
do {
j = getnyb() ;
i++ ;
} while (!(j != 0)) ;
while (i > 0) {
j = (j<<4) + getnyb() ;
i-- ;
}
return(j - 15 +((13 - dynf)<<4) + dynf) ;
} else if (i <= dynf) return(i) ;
else if (i < 14) return(((i - dynf - 1)<<4) + getnyb() + dynf + 1) ;
else {
if (i == 14) repeatcount = pkpackednum() ;
else repeatcount = 1 ;
return(pkpackednum()) ;
}
}
skipspecials()
{
integer i, j, k ;
do {
flagbyte = pkbyte() ;
if (flagbyte >= 240)
switch(flagbyte) {
case 240:
case 241:
case 242:
case 243:
i = 0 ;
for (j = 240 ; j <= flagbyte ; j ++) i = (i<<8) + pkbyte() ;
for (j = 1 ; j <= i ; j ++) k = pkbyte() ;
break ;
case 244:
i = get32() ;
break ;
case 245:
break ;
case 246:
break ;
case 247:
case 248:
case 249:
case 250:
case 251:
case 252:
case 253:
case 254:
case 255:
fprintf(stderr, " Unexpected flag byte %d!\n", flagbyte) ;
jumpout() ;
}
} while (!((flagbyte < 240) || (flagbyte == 245))) ;
}
usage()
{
fprintf(stderr, " Usage: pktopbm pkfile[.pk] [[-c num] pbmfile]...\n");
jumpout() ;
}
dialog(gargc, gargv)
int gargc ;
char **gargv ;
{
integer car ;
if (--gargc < 1) usage() ;
strcpy(pkname, *++gargv) ;
add_suffix(pkname, "pk") ;
car = 0 ;
while (++gargv, --gargc) {
if (gargv[0][0] == '-' && gargv[0][1])
switch (gargv[0][1]) {
case 'c':
if (gargv[0][2]) car = atoi(*gargv+2) ;
else if (++gargv, --gargc) car = atoi(*gargv) ;
else usage() ;
break ;
default:
usage() ;
} else if (car < 0 || car >= MAXPKCHAR) {
fprintf(stderr, " Character must be in range 0 to %d (-c)!\n",
MAXPKCHAR-1) ;
jumpout() ;
} else filename[car++] = *gargv ;
}
}
main(argc, argv)
int argc ;
char *argv[] ;
{
integer endofpacket ;
integer designsize ;
integer checksum ;
integer hppp, vppp ;
integer cheight, cwidth ;
integer horesc ;
integer packetlength ;
integer rowsleft ;
boolean turnon ;
integer hbit ;
integer count ;
integer rp ;
integer i, j, k ;
integer car ;
bit row[MAXROWWIDTH+1] ;
initialize() ;
dialog(argc, argv) ;
openpkfile() ;
if (pkbyte() != 247) {
fprintf(stderr, " Bad pk file (pre command missing)!\n") ;
jumpout() ;
}
if (pkbyte() != 89) {
fprintf(stderr, " Wrong version of packed file!\n") ;
jumpout() ;
}
j = pkbyte() ;
for (i = 1 ; i <= j ; i ++) k = pkbyte() ;
designsize = get32() ;
checksum = get32() ;
hppp = get32() ;
vppp = get32() ;
if (hppp != vppp) fprintf(stderr, " Warning: aspect ratio not 1:1!\n") ;
skipspecials() ;
while (flagbyte != 245) {
dynf = (flagbyte>>4) ;
flagbyte &= 15 ;
turnon = (flagbyte >= 8) ;
if (turnon) flagbyte &= 7 ;
if (flagbyte == 7) {
packetlength = get32() ;
car = get32() ;
endofpacket = packetlength + pkloc ;
if ((car >= MAXPKCHAR) || (car < 0)) goto lab9997 ;
i = get32() ; /* tfmwidth */
horesc = get32() ;
i = get32() ;
cwidth = get32() ;
cheight = get32() ;
if ((cwidth < 0) || (cheight < 0) || (cwidth > 65535) || (cheight > 65535)) goto lab9997 ;
i = get32() ;
j = get32() ;
} else if (flagbyte > 3) {
packetlength =((flagbyte - 4)<<16) + get16() ;
car = pkbyte() ;
endofpacket = packetlength + pkloc ;
if (car >= MAXPKCHAR) goto lab9997 ;
i = pkbyte() ; /* tfmwidth */
i = get16() ;
horesc = get16() ;
cwidth = get16() ;
cheight = get16() ;
i = get16() ;
j = get16() ;
} else {
packetlength = (flagbyte<<8) + pkbyte() ;
car = pkbyte() ;
endofpacket = packetlength + pkloc ;
if (car >= MAXPKCHAR) goto lab9997 ;
i = pkbyte() ; /* tfmwidth */
i = get16() ;
horesc = pkbyte() ;
cwidth = pkbyte() ;
cheight = pkbyte() ;
i = pkbyte() ;
j = pkbyte() ;
}
if (filename[car]) {
bitmap = pbm_allocarray(cwidth, cheight) ;
if (bitmap == NULL) {
fprintf(stderr, " Out of memory allocating bitmap!\n") ;
jumpout() ;
}
} else goto lab9997 ;
bitweight = 0 ;
if (dynf == 14) {
for (i = 0 ; i < cheight ; i ++)
for (j = 0 ; j < cwidth ; j ++) {
if (getbit())
bitmap[i][j] = PBM_BLACK ;
else
bitmap[i][j] = PBM_WHITE ;
}
} else {
rowsleft = cheight ;
hbit = cwidth ;
repeatcount = rp =0 ;
while (rowsleft > 0) {
count = pkpackednum() ;
while (count > 0) {
if (count < hbit) {
hbit -= count ;
while (count--) {
if (turnon)
row[rp++] = PBM_BLACK ;
else
row[rp++] = PBM_WHITE ;
}
} else {
count -= hbit ;
while (hbit--) {
if (turnon)
row[rp++] = PBM_BLACK ;
else
row[rp++] = PBM_WHITE ;
}
for (i = 0; i <= repeatcount; i++)
for (j = 0; j < cwidth; j++)
bitmap[i + cheight-rowsleft][j] = row[j] ;
rowsleft -= repeatcount + 1;
repeatcount = rp = 0 ;
hbit = cwidth ;
}
}
turnon = ! turnon ;
}
if ((rowsleft != 0) || (hbit != cwidth)) {
fprintf(stderr, " Bad pk file (more bits than required)!\n") ;
jumpout() ;
}
}
if (endofpacket != pkloc) {
fprintf(stderr, " Bad pk file (bad packet length)!\n") ;
jumpout() ;
}
/* output bitmap to file */
{
FILE *fp ;
if (!strcmp(filename[car], "-"))
fp = stdout ;
else {
if ((fp = fopen(filename[car], "w")) == NULL) {
fprintf(stderr, " Can't open file %s!\n", filename[car]) ;
jumpout() ;
}
}
filename[car] = NULL;
pbm_writepbm(fp, bitmap, cwidth, cheight, 0) ;
pbm_freearray(bitmap, cheight) ;
if (fp != stdout) (void)fclose(fp) ;
}
goto lab9998 ;
lab9997: while (pkloc != endofpacket) i = pkbyte() ;
if (car < 0 || car >= MAXPKCHAR)
fprintf(stderr, " Character %d out of range!\n", car) ;
lab9998: skipspecials() ;
}
while (! feof(pkfile)) i = pkbyte() ;
pkloc-- ;
for (car = 0; car < MAXPKCHAR; car++)
if (filename[car])
fprintf(stderr, " Warning: No character in position %d (file %s).\n",
car, filename[car]) ;
fprintf(stderr, "%d bytes read from packed file.\n", pkloc) ;
exit(0);
}
|