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
|
/****************************************************************
Copyright 1990, 1993, 1994, 2000 by AT&T, Lucent Technologies and Bellcore.
Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
provided that the above copyright notice appear in all copies and that
both that the copyright notice and this permission notice and warranty
disclaimer appear in supporting documentation, and that the names of
AT&T, Bell Laboratories, Lucent or Bellcore or any of their entities
not be used in advertising or publicity pertaining to distribution of
the software without specific, written prior permission.
AT&T, Lucent and Bellcore disclaim all warranties with regard to this
software, including all implied warranties of merchantability and
fitness. In no event shall AT&T or Bellcore be liable for any
special, indirect or consequential damages or any damages whatsoever
resulting from loss of use, data or profits, whether in an action of
contract, negligence or other tortious action, arising out of or in
connection with the use or performance of this software.
****************************************************************/
#undef _POSIX_SOURCE
#define _POSIX_SOURCE
#include "stdio.h"
#ifndef KR_headers
#include "stdlib.h"
#include "sys/types.h"
#ifndef MSDOS
#include "unistd.h" /* for read, close */
#endif
#include "fcntl.h" /* for declaration of open, O_RDONLY */
#endif
#ifdef MSDOS
#include "io.h"
#endif
#ifndef O_RDONLY
#define O_RDONLY 0
#endif
#ifndef O_BINARY
#define O_BINARY O_RDONLY
#endif
char *progname;
static int ignore_cr;
void
#ifdef KR_headers
usage(rc)
#else
usage(int rc)
#endif
{
fprintf(stderr, "usage: %s [-r] [file [file...]]\n\
option -r ignores carriage return characters\n", progname);
exit(rc);
}
typedef unsigned char Uchar;
long
#ifdef KR_headers
sum32(sum, x, n)
register long sum;
register Uchar *x;
int n;
#else
sum32(register long sum, register Uchar *x, int n)
#endif
{
register Uchar *xe;
static long crc_table[256] = {
0, 151466134, 302932268, 453595578,
-9583591, -160762737, -312236747, -463170141,
-19167182, -136529756, -321525474, -439166584,
28724267, 145849533, 330837255, 448732561,
-38334364, -189783822, -273059512, -423738914,
47895677, 199091435, 282375505, 433292743,
57448534, 174827712, 291699066, 409324012,
-67019697, -184128295, -300991133, -418902539,
-76668728, -227995554, -379567644, -530091662,
67364049, 218420295, 369985021, 520795499,
95791354, 213031020, 398182870, 515701056,
-86479645, -203465611, -388624945, -506380967,
114897068, 266207290, 349655424, 500195606,
-105581387, -256654301, -340093543, -490887921,
-134039394, -251295736, -368256590, -485758684,
124746887, 241716241, 358686123, 476458301,
-153337456, -2395898, -455991108, -304803798,
162629001, 11973919, 465560741, 314102835,
134728098, 16841012, 436840590, 319723544,
-144044613, -26395347, -446403433, -329032703,
191582708, 40657250, 426062040, 274858062,
-200894995, -50223749, -435620671, -284179369,
-172959290, -55056048, -406931222, -289830788,
182263263, 64630089, 416513267, 299125861,
229794136, 78991822, 532414580, 381366498,
-220224191, -69691945, -523123603, -371788549,
-211162774, -93398532, -513308602, -396314416,
201600371, 84090341, 503991391, 386759881,
-268078788, -117292630, -502591472, -351526778,
258520357, 107972019, 493278217, 341959839,
249493774, 131713432, 483432482, 366454964,
-239911657, -122417791, -474129349, -356881235,
-306674912, -457198666, -4791796, -156118374,
315967289, 466778031, 14362133, 165418627,
325258002, 442776452, 23947838, 141187752,
-334573813, -452329571, -33509849, -150495567,
269456196, 419996626, 33682024, 184992510,
-278767779, -429561909, -43239823, -194312473,
-288089226, -405591072, -52790694, -170046772,
297394031, 415166457, 62373443, 179343061,
383165416, 533828478, 81314500, 232780370,
-373594127, -524527769, -72022307, -223201717,
-401789990, -519431348, -100447498, -217810336,
392228803, 510123861, 91131631, 208256633,
-345918580, -496598246, -110112096, -261561802,
336361365, 487278339, 100800185, 251995695,
364526526, 482151208, 129260178, 246639108,
-354943065, -472854735, -119955829, -237064675,
459588272, 308539942, 157983644, 7181066,
-469170519, -317835713, -167286907, -16754925,
-440448382, -323454444, -139383890, -21619912,
450006683, 332774925, 148697015, 31186721,
-422325548, -271261118, -186797064, -36011154,
431888077, 280569435, 196114401, 45565815,
403200742, 286222960, 168180682, 50400092,
-412770561, -295522711, -177471533, -59977915,
-536157576, -384970002, -234585260, -83643454,
526853729, 375396087, 225003341, 74348507,
517040714, 399923932, 215944038, 98057200,
-507728301, -390357307, -206385281, -88735767,
498987548, 347783818, 263426864, 112501670,
-489671163, -338229613, -253864151, -103192641,
-479823314, -362722632, -244835582, -126932076,
470531639, 353144481, 235265819, 117632909
};
xe = x + n;
while(x < xe)
sum = crc_table[(sum ^ *x++) & 0xff] ^ (sum >> 8 & 0xffffff);
return sum;
}
int
#ifdef KR_headers
cr_purge(buf, n)
Uchar *buf;
int n;
#else
cr_purge(Uchar *buf, int n)
#endif
{
register Uchar *b, *b1, *be;
b = buf;
be = b + n;
while(b < be)
if (*b++ == '\r') {
b1 = b - 1;
while(b < be)
if ((*b1 = *b++) != '\r')
b1++;
return b1 - buf;
}
return n;
}
static Uchar Buf[16*1024];
void
#ifdef KR_headers
process(s, x)
char *s;
int x;
#else
process(char *s, int x)
#endif
{
register int n;
long fsize, sum;
sum = 0;
fsize = 0;
while((n = read(x, (char *)Buf, sizeof(Buf))) > 0) {
if (ignore_cr)
n = cr_purge(Buf, n);
fsize += n;
sum = sum32(sum, Buf, n);
}
sum &= 0xffffffff;
if (n==0)
printf("%s\t%lx\t%ld\n", s, sum & 0xffffffff, fsize);
else { perror(s); }
close(x);
}
int
#ifdef KR_headers
main(argc, argv)
char **argv;
#else
main(int argc, char **argv)
#endif
{
int x;
char *s;
static int rc;
progname = *argv;
argc = argc; /* turn off "not used" warning */
s = *++argv;
if (s && *s == '-') {
switch(s[1]) {
case '?':
usage(0);
case 'r':
ignore_cr = 1;
case '-':
break;
default:
fprintf(stderr, "invalid option %s\n", s);
usage(1);
}
s = *++argv;
}
if (s) do {
x = open(s, O_RDONLY|O_BINARY);
if (x < 0) {
fprintf(stderr, "%s: can't open %s\n", progname, s);
rc |= 1;
}
else
process(s, x);
}
while(s = *++argv);
else {
process("/dev/stdin", fileno(stdin));
}
return rc;
}
|
