/* Portions Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).
* All rights reserved.
*/
/* ezexample.c -- usage example of the zlib compression library
* Copyright (C) 1995-1998 Jean-loup Gailly.
* For conditions of distribution and use, see copyright notice in zlib.h
*/
/* @(#) $Id$ */
#include <stdio.h>
#include <ezlib.h>
#include <e32test.h>
static RTest test(_L("ezexample.exe"));
_LIT(KTestTitle, "Open Source Library Defect Tests.");
#ifdef STDC
# include <string.h>
# include <stdlib.h>
#else
extern void exit OF((int));
#endif
#if defined(VMS) || defined(RISCOS)
# define TESTFILE "foo-gz"
#else
# define TESTFILE "foo.gz"
#endif
/* Test macro and function */
void Check(TInt aValue, TInt aExpected, TInt aLine)
{
if (aValue != aExpected)
{
test.Printf(_L("*** Expected error: %d, got: %d\r\n"), aExpected, aValue);
test.operator()(EFalse, aLine);
}
}
#define test2(a, b) Check(a, b, __LINE__)
const char hello[] = "hello, hello!";
/* "hello world" would be more standard, but the repeated "hello"
* stresses the compression code better, sorry...
*/
const char dictionary[] = "hello";
uLong dictId; /* Adler32 value of the dictionary */
void test_compress OF((Byte *compr, uLong comprLen,
Byte *uncompr, uLong uncomprLen));
void test_deflate OF((Byte *compr, uLong comprLen));
void test_inflate OF((Byte *compr, uLong comprLen,
Byte *uncompr, uLong uncomprLen));
void test_large_deflate OF((Byte *compr, uLong comprLen,
Byte *uncompr, uLong uncomprLen));
void test_large_inflate OF((Byte *compr, uLong comprLen,
Byte *uncompr, uLong uncomprLen));
void test_flush OF((Byte *compr, uLong *comprLen));
void test_sync OF((Byte *compr, uLong comprLen,
Byte *uncompr, uLong uncomprLen));
void test_dict_deflate OF((Byte *compr, uLong comprLen));
void test_dict_inflate OF((Byte *compr, uLong comprLen,
Byte *uncompr, uLong uncomprLen));
void PrintString(TRefByValue<const TDesC> aFmt, char* string);
void RunTest();
/**
Test compress() and uncompress()
@SYMTestCaseID SYSLIB-EZLIB-CT-0820-0001
@SYMTestCaseDesc Compression and decompression of a buffer test.
@SYMTestPriority High
@SYMTestActions Compress and uncompress string "hello" and check for integrity of the operation done.
@SYMTestExpectedResults The test must not fail.
@SYMREQ REQ0000
*/
void test_compress(
Byte *compr, uLong comprLen, Byte *uncompr,
uLong uncomprLen)
{
test.Next(_L("test_compress"));
test.Next(_L(" @SYMTestCaseID:SYSLIB-EZLIB-CT-0820-0001 "));
int err;
uLong len = strlen(hello)+1;
err = compress(compr, &comprLen, (const Bytef*)hello, len);
test2(err, Z_OK);
strcpy((char*)uncompr, "garbage");
err = uncompress(uncompr, &uncomprLen, compr, comprLen);
test2(err, Z_OK);
test2(strcmp((char*)uncompr, hello), 0); /* Fails if bad uncompress */
PrintString(_L("uncompress(): %S\n"), (char*)uncompr);
}
/**
@SYMTestCaseID SYSLIB-EZLIB-CT-0821-0001
@SYMTestCaseDesc Read and write of .gz files test
@SYMTestPriority High
@SYMTestActions Tests deflate() with small buffers
@SYMTestExpectedResults The test must not fail.
@SYMREQ REQ0000
*/
void test_deflate(
Byte *compr,
uLong comprLen)
{
test.Next(_L("test_deflate"));
test.Next(_L(" @SYMTestCaseID:SYSLIB-EZLIB-CT-0821-0001 "));
z_stream c_stream; /* compression stream */
int err;
int len = strlen(hello)+1;
c_stream.zalloc = (alloc_func)0;
c_stream.zfree = (free_func)0;
c_stream.opaque = (voidpf)0;
err = deflateInit(&c_stream, Z_DEFAULT_COMPRESSION);
test2(err, Z_OK);
c_stream.next_in = (Bytef*)hello;
c_stream.next_out = compr;
while (c_stream.total_in != (uLong)len && c_stream.total_out < comprLen) {
c_stream.avail_in = c_stream.avail_out = 1; /* force small buffers */
err = deflate(&c_stream, Z_NO_FLUSH);
test2(err, Z_OK);
}
/* Finish the stream, still forcing small buffers: */
for (;;) {
c_stream.avail_out = 1;
err = deflate(&c_stream, Z_FINISH);
if (err == Z_STREAM_END) break;
test2(err, Z_OK);
}
err = deflateEnd(&c_stream);
test2(err, Z_OK);
}
/**
@SYMTestCaseID SYSLIB-EZLIB-CT-0822-0001
@SYMTestCaseDesc Read and write of .gz files test
@SYMTestPriority High
@SYMTestActions Tests inflate() with small buffers
@SYMTestExpectedResults The test must not fail.
@SYMREQ REQ0000
*/
void test_inflate(
Byte *compr, uLong comprLen, Byte *uncompr,
uLong uncomprLen)
{
test.Next(_L("test_inflate"));
test.Next(_L(" @SYMTestCaseID:SYSLIB-EZLIB-CT-0822-0001 "));
int err;
z_stream d_stream; /* decompression stream */
strcpy((char*)uncompr, "garbage");
d_stream.zalloc = (alloc_func)0;
d_stream.zfree = (free_func)0;
d_stream.opaque = (voidpf)0;
d_stream.next_in = compr;
d_stream.avail_in = 0;
d_stream.next_out = uncompr;
err = inflateInit(&d_stream);
test2(err, Z_OK);
while (d_stream.total_out < uncomprLen && d_stream.total_in < comprLen) {
d_stream.avail_in = d_stream.avail_out = 1; /* force small buffers */
err = inflate(&d_stream, Z_NO_FLUSH);
if (err == Z_STREAM_END) break;
test2(err, Z_OK);
}
err = inflateEnd(&d_stream);
test2(err, Z_OK);
test2(strcmp((char*)uncompr, hello), 0); /* Fails if bad inflate */
PrintString(_L("inflate(): %S\n"), (char*)uncompr);
}
/**
@SYMTestCaseID SYSLIB-EZLIB-CT-0823-0001
@SYMTestCaseDesc Deflate with large buffers test
@SYMTestPriority High
@SYMTestActions Test deflate() with large buffers and dynamic change of compression level
@SYMTestExpectedResults The test must not fail.
@SYMREQ REQ0000
*/
void test_large_deflate(
Byte *compr, uLong comprLen, Byte *uncompr,
uLong uncomprLen)
{
test.Next(_L("test_large_deflate"));
test.Next(_L(" @SYMTestCaseID:SYSLIB-EZLIB-CT-0823-0001 "));
z_stream c_stream; /* compression stream */
int err;
c_stream.zalloc = (alloc_func)0;
c_stream.zfree = (free_func)0;
c_stream.opaque = (voidpf)0;
err = deflateInit(&c_stream, Z_BEST_SPEED);
test2(err, Z_OK);
c_stream.next_out = compr;
c_stream.avail_out = (uInt)comprLen;
/* At this point, uncompr is still mostly zeroes, so it should compress
* very well:
*/
c_stream.next_in = uncompr;
c_stream.avail_in = (uInt)uncomprLen;
err = deflate(&c_stream, Z_NO_FLUSH);
test2(err, Z_OK);
test2(c_stream.avail_in, 0); /* Fails if deflate not greedy */
/* Feed in already compressed data and switch to no compression: */
deflateParams(&c_stream, Z_NO_COMPRESSION, Z_DEFAULT_STRATEGY);
c_stream.next_in = compr;
c_stream.avail_in = (uInt)comprLen/2;
err = deflate(&c_stream, Z_NO_FLUSH);
test2(err, Z_OK);
/* Switch back to compressing mode: */
deflateParams(&c_stream, Z_BEST_COMPRESSION, Z_FILTERED);
c_stream.next_in = uncompr;
c_stream.avail_in = (uInt)uncomprLen;
err = deflate(&c_stream, Z_NO_FLUSH);
test2(err, Z_OK);
err = deflate(&c_stream, Z_FINISH);
test2(err, Z_STREAM_END);
err = deflateEnd(&c_stream);
test2(err, Z_OK);
}
/**
@SYMTestCaseID SYSLIB-EZLIB-CT-0824-0001
@SYMTestCaseDesc Inflate with large buffers test
@SYMTestPriority High
@SYMTestActions Tests inflate() with large buffers
@SYMTestExpectedResults The test must not fail.
@SYMREQ REQ0000
*/
void test_large_inflate(
Byte *compr, uLong comprLen, Byte *uncompr,
uLong uncomprLen)
{
test.Next(_L(" @SYMTestCaseID:SYSLIB-EZLIB-CT-0824-0001 test_large_inflate "));
int err;
z_stream d_stream; /* decompression stream */
strcpy((char*)uncompr, "garbage");
d_stream.zalloc = (alloc_func)0;
d_stream.zfree = (free_func)0;
d_stream.opaque = (voidpf)0;
d_stream.next_in = compr;
d_stream.avail_in = (uInt)comprLen;
err = inflateInit(&d_stream);
test2(err, Z_OK);
for (;;) {
d_stream.next_out = uncompr; /* discard the output */
d_stream.avail_out = (uInt)uncomprLen;
err = inflate(&d_stream, Z_NO_FLUSH);
if (err == Z_STREAM_END) break;
test2(err, Z_OK);
}
err = inflateEnd(&d_stream);
test2(err, Z_OK);
test2(d_stream.total_out, (2*uncomprLen + comprLen/2)); /* Fails if bad large inflate */
test.Printf(_L("large_inflate(): OK\n"));
}
/**
@SYMTestCaseID SYSLIB-EZLIB-CT-0825-0001
@SYMTestCaseDesc Test deflate() with full flush
@SYMTestPriority High
@SYMTestActions Test by flushing the output as random access is desired
@SYMTestExpectedResults The test must not fail.
@SYMREQ REQ0000
*/
void test_flush(
Byte *compr,
uLong *comprLen)
{
test.Next(_L("test_flush"));
test.Next(_L(" @SYMTestCaseID:SYSLIB-EZLIB-CT-0825-0001 "));
z_stream c_stream; /* compression stream */
int err;
int len = strlen(hello)+1;
c_stream.zalloc = (alloc_func)0;
c_stream.zfree = (free_func)0;
c_stream.opaque = (voidpf)0;
err = deflateInit(&c_stream, Z_DEFAULT_COMPRESSION);
test2(err, Z_OK);
c_stream.next_in = (Bytef*)hello;
c_stream.next_out = compr;
c_stream.avail_in = 3;
c_stream.avail_out = (uInt)*comprLen;
err = deflate(&c_stream, Z_FULL_FLUSH);
test2(err, Z_OK);
compr[3]++; /* force an error in first compressed block */
c_stream.avail_in = len - 3;
err = deflate(&c_stream, Z_FINISH);
if (err != Z_STREAM_END) {
test2(err, Z_OK);
}
err = deflateEnd(&c_stream);
test2(err, Z_OK);
*comprLen = c_stream.total_out;
}
/**
@SYMTestCaseID SYSLIB-EZLIB-CT-0826-0001
@SYMTestCaseDesc Test the inflateSync() function
@SYMTestPriority High
@SYMTestActions Tests for reading of compressed data with damaged parts and check for errors.
@SYMTestExpectedResults The test must not fail.
@SYMREQ REQ0000
*/
void test_sync(
Byte *compr, uLong comprLen, Byte *uncompr,
uLong uncomprLen)
{
test.Next(_L("test_sync"));
test.Next(_L(" @SYMTestCaseID:SYSLIB-EZLIB-CT-0826-0001 "));
int err;
z_stream d_stream; /* decompression stream */
strcpy((char*)uncompr, "garbage");
d_stream.zalloc = (alloc_func)0;
d_stream.zfree = (free_func)0;
d_stream.opaque = (voidpf)0;
d_stream.next_in = compr;
d_stream.avail_in = 2; /* just read the zlib header */
err = inflateInit(&d_stream);
test2(err, Z_OK);
d_stream.next_out = uncompr;
d_stream.avail_out = (uInt)uncomprLen;
inflate(&d_stream, Z_NO_FLUSH);
test2(err, Z_OK);
d_stream.avail_in = (uInt)comprLen-2; /* read all compressed data */
err = inflateSync(&d_stream); /* but skip the damaged part */
test2(err, Z_OK);
err = inflate(&d_stream, Z_FINISH);
test2(err, Z_DATA_ERROR); /* inflate should report DATA_ERROR because of incorrect adler32 */
err = inflateEnd(&d_stream);
test2(err, Z_OK);
PrintString(_L("after inflateSync(): hel%S\n"), (char*)uncompr);
}
/**
@SYMTestCaseID SYSLIB-EZLIB-CT-0827-0001
@SYMTestCaseDesc Deflation functionality test
@SYMTestPriority High
@SYMTestActions Test deflate() function with preset dictionary
@SYMTestExpectedResults The test must not fail.
@SYMREQ REQ0000
*/
void test_dict_deflate(
Byte *compr,
uLong comprLen)
{
test.Next(_L("test_dict_deflate"));
test.Next(_L(" @SYMTestCaseID:SYSLIB-EZLIB-CT-0827-0001 "));
z_stream c_stream; /* compression stream */
int err;
c_stream.zalloc = (alloc_func)0;
c_stream.zfree = (free_func)0;
c_stream.opaque = (voidpf)0;
err = deflateInit(&c_stream, Z_BEST_COMPRESSION);
test2(err, Z_OK);
err = deflateSetDictionary(&c_stream,
(const Bytef*)dictionary, sizeof(dictionary));
test2(err, Z_OK);
dictId = c_stream.adler;
c_stream.next_out = compr;
c_stream.avail_out = (uInt)comprLen;
c_stream.next_in = (Bytef*)hello;
c_stream.avail_in = (uInt)strlen(hello)+1;
err = deflate(&c_stream, Z_FINISH);
test2(err, Z_STREAM_END);
err = deflateEnd(&c_stream);
test2(err, Z_OK);
}
/**
@SYMTestCaseID SYSLIB-EZLIB-CT-0828-0001
@SYMTestCaseDesc Inflation functionality test
@SYMTestPriority High
@SYMTestActions Test inflate() with a preset dictionary
@SYMTestExpectedResults The test must not fail.
@SYMREQ REQ0000
*/
void test_dict_inflate(
Byte *compr, uLong comprLen, Byte *uncompr,
uLong uncomprLen)
{
test.Next(_L("test_dict_inflate"));
test.Next(_L(" @SYMTestCaseID:SYSLIB-EZLIB-CT-0828-0001 "));
int err;
z_stream d_stream; /* decompression stream */
strcpy((char*)uncompr, "garbage");
d_stream.zalloc = (alloc_func)0;
d_stream.zfree = (free_func)0;
d_stream.opaque = (voidpf)0;
d_stream.next_in = compr;
d_stream.avail_in = (uInt)comprLen;
err = inflateInit(&d_stream);
test2(err, Z_OK);
d_stream.next_out = uncompr;
d_stream.avail_out = (uInt)uncomprLen;
for (;;) {
err = inflate(&d_stream, Z_NO_FLUSH);
if (err == Z_STREAM_END) break;
if (err == Z_NEED_DICT) {
test2(d_stream.adler, dictId); /* Fails if unexpected dictionary */
err = inflateSetDictionary(&d_stream, (const Bytef*)dictionary,
sizeof(dictionary));
}
test2(err, Z_OK);
}
err = inflateEnd(&d_stream);
test2(err, Z_OK);
test2(strcmp((char*)uncompr, hello), 0); /* Fails if bad inflate with dictionary */
PrintString(_L("inflate with dictionary: %S\n"), (char*)uncompr);
}
/* ===========================================================================
* Usage: example [output.gz [input.gz]]
*/
void PrintString(TRefByValue<const TDesC> aFmt, char* string)
{
TPtrC8 ptrc8;
TBuf<100> buf;
ptrc8.Set((TUint8*)string, strlen(string));
buf.Copy(ptrc8);
test.Printf(aFmt, &buf);
}
void RunTest()
{
Byte *compr, *uncompr;
uLong comprLen = 10000*sizeof(int); /* don't overflow on MSDOS */
uLong uncomprLen = comprLen;
static const char* myVersion = ZLIB_VERSION;
test2(zlibVersion()[0], myVersion[0]); /* Fails if incompatible zlib version */
if (strcmp(zlibVersion(), ZLIB_VERSION) != 0) {
test.Printf(_L("warning: different zlib version\n"));
}
compr = (Byte*)calloc((uInt)comprLen, 1);
uncompr = (Byte*)calloc((uInt)uncomprLen, 1);
/* compr and uncompr are cleared to avoid reading uninitialized
* data and to ensure that uncompr compresses well.
*/
test2((compr == Z_NULL || uncompr == Z_NULL), 0); /* Fails if out of memory */
test_compress(compr, comprLen, uncompr, uncomprLen);
test_deflate(compr, comprLen);
test_inflate(compr, comprLen, uncompr, uncomprLen);
test_large_deflate(compr, comprLen, uncompr, uncomprLen);
test_large_inflate(compr, comprLen, uncompr, uncomprLen);
test_flush(compr, &comprLen);
test_sync(compr, comprLen, uncompr, uncomprLen);
comprLen = uncomprLen;
test_dict_deflate(compr, comprLen);
test_dict_inflate(compr, comprLen, uncompr, uncomprLen);
delete compr;
delete uncompr;
}
GLDEF_C TInt E32Main()
{
__UHEAP_MARK;
test.Printf(_L("\n"));
test.Title();
test.Start(KTestTitle);
CTrapCleanup* cleanup = CTrapCleanup::New();
TRAPD(err, RunTest());
test2(err, KErrNone);
test.End();
test.Close();
delete cleanup;
__UHEAP_MARKEND;
return KErrNone;
}