Book a Demo!
CoCalc Logo Icon
StoreFeaturesDocsShareSupportNewsAboutPoliciesSign UpSign In
att
GitHub Repository: att/ast
 Path: blob/master/src/cmd/vczip/tests/tvchuffgroup.c
1810 views
1
/***********************************************************************

2
*                                                                      *

3
*               This software is part of the ast package               *

4
*          Copyright (c) 2003-2011 AT&T Intellectual Property          *

5
*                      and is licensed under the                       *

6
*                 Eclipse Public License, Version 1.0                  *

7
*                    by AT&T Intellectual Property                     *

8
*                                                                      *

9
*                A copy of the License is available at                 *

10
*          http://www.eclipse.org/org/documents/epl-v10.html           *

11
*         (with md5 checksum b35adb5213ca9657e911e9befb180842)         *

12
*                                                                      *

13
*              Information and Software Systems Research               *

14
*                            AT&T Research                             *

15
*                           Florham Park NJ                            *

16
*                                                                      *

17
*                   Phong Vo <[email protected]>                    *

18
*                 Glenn Fowler <[email protected]>                  *

19
*                                                                      *

20
***********************************************************************/

21
#include	"vctest.h"

22


23
int main()

24
{

25
	Vcodex_t	*vch, *vcu;

26
	ssize_t		k, n;

27
	int		c;

28
	char		data[64*1024], *d, *endd;

29


30
	/* generate random data */

31
	c = 'a';

32
	for(endd = (d = data)+sizeof(data); d < endd; )

33
	{	

34
		for(k = 0; k < 64 && d < endd; ++k, ++d)

35
			*d = c + (random()%2);

36
		if((c += 2) > 'h')

37
			c = 'a';

38
	}

39


40
	if(!(vch = vcopen(0, Vchuffgroup, 0, 0, VC_ENCODE)) )

41
		terror("Cannot open Vchuffgroup handle");

42
	if(!(vcu = vcopen(0, Vchuffgroup, 0, 0, VC_DECODE)) )

43
		terror("Cannot open Vchuffgroup handle to decode");

44
	if((k = vcapply(vch, data, sizeof(data), &d)) <= 0)

45
		terror("Can't compress");

46
	twarn("Vchuffgroup: original size=%d compressed size=%d\n",sizeof(data),k);

47
	if((n = vcapply(vcu, d, k, &d)) != sizeof(data))

48
		terror("Can't decompress n=%d", n);

49
	for(k = 0; k < sizeof(data); ++k)

50
		if(d[k] != data[k])

51
			terror("Bad decompressed data");

52


53
	if(!(vch = vcopen(0, Vchuffpart, 0, 0, VC_ENCODE)) )

54
		terror("Cannot open Vchuffpart handle");

55
	if(!(vcu = vcopen(0, Vchuffpart, 0, 0, VC_DECODE)) )

56
		terror("Cannot open Vchuffpart handle to decode");

57
	if((k = vcapply(vch, data, sizeof(data), &d)) <= 0)

58
		terror("Can't compress");

59
	twarn("Vchuffpart: original size=%d compressed size=%d\n",sizeof(data),k);

60
	if((n = vcapply(vcu, d, k, &d)) != sizeof(data))

61
		terror("Can't decompress n=%d", n);

62
	for(k = 0; k < sizeof(data); ++k)

63
		if(d[k] != data[k])

64
			terror("Bad decompressed data");

65


66
	exit(0);

67
}

68


69