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/*
* (C) Copyright 1996- ECMWF.
*
* This software is licensed under the terms of the Apache Licence Version 2.0
* which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
* In applying this licence, ECMWF does not waive the privileges and immunities
* granted to it by virtue of its status as an intergovernmental organisation nor
* does it submit to any jurisdiction.
*/
#include <cstring>
#include "eckit/io/Compress.h"
#include "eckit/io/MemoryHandle.h"
#include "eckit/testing/Test.h"
using namespace std;
using namespace eckit;
using namespace eckit::testing;
namespace eckit::test {
//----------------------------------------------------------------------------------------------------------------------
static std::string test(const char* text) {
char compressed[10240] = {};
char uncompressed[10240] = {};
Compress compress(16);
size_t s;
size_t t;
std::cout << "Text is [" << text << "]" << std::endl;
{
MemoryHandle in(text, strlen(text));
MemoryHandle out(compressed, sizeof(compressed));
s = compress.encode(in, out);
std::cout << "Compress from " << strlen(text) << " to " << s << std::endl;
}
std::cout << "-----------------------" << std::endl;
{
MemoryHandle in(compressed, s);
MemoryHandle out(uncompressed, sizeof(uncompressed));
t = compress.decode(in, out);
std::cout << "Uncompress from " << s << " to " << t << std::endl;
}
std::string u(uncompressed, uncompressed + t);
std::cout << text << std::endl;
std::cout << u << std::endl;
for (size_t i = 0; i < std::min(u.size(), strlen(text)); ++i) {
std::cout << ((text[i] == u[i]) ? ' ' : '|');
}
std::cout << std::endl;
return u;
}
//----------------------------------------------------------------------------------------------------------------------
CASE("test_eckit_compress_1") {
const char* pattern = "TOBEORNOTTOBEORTOBEORNOT#";
std::string s = test(pattern);
EXPECT(s == std::string(pattern));
}
CASE("test_eckit_compress_2") {
const char* pattern = "ABCABCABCABCABCABC";
std::string s = test(pattern);
EXPECT(s == std::string(pattern));
}
CASE("test_eckit_compress_3") {
const char* pattern = "";
std::string s = test(pattern);
EXPECT(s == std::string(pattern));
}
CASE("test_eckit_compress_4") {
char original[102400];
char compressed[102400 * 2];
char uncompressed[102400];
size_t s;
size_t t;
for (size_t i = 0; i < sizeof(original); ++i) {
original[i] = i;
}
for (size_t bits = 16; bits >= 9; bits--) {
std::cout << "Bits " << bits << std::endl;
Compress compress(bits);
{
MemoryHandle in(original, sizeof(original));
MemoryHandle out(compressed, sizeof(compressed));
s = compress.encode(in, out);
std::cout << "Compress from " << sizeof(original) << " to " << s << " "
<< int(double(s) / double(sizeof(original)) * 100.0 + 0.5) << "%" << std::endl;
}
std::cout << "-----------------------" << std::endl;
{
MemoryHandle in(compressed, s);
MemoryHandle out(uncompressed, sizeof(uncompressed));
t = compress.decode(in, out);
std::cout << "Uncompress from " << s << " to " << t << std::endl;
}
EXPECT(sizeof(original) == t);
for (size_t i = 0; i < sizeof(original); ++i) {
EXPECT(original[i] == uncompressed[i]);
}
}
}
//----------------------------------------------------------------------------------------------------------------------
} // namespace eckit::test
int main(int argc, char** argv) {
return run_tests(argc, argv);
}
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