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Step 1: fix broken submodule config

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Leonetienne 2022-05-17 01:16:25 +02:00
parent a8230086d3
commit e416fe05cb
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3
.gitmodules vendored
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[submodule "Hazelnupp"]
path = Hazelnupp
url = git@gitea.leonetienne.de:leonetienne/Hazelnupp.git
[submodule "GeneralUtility"]
path = GeneralUtility
url = git@gitea.leonetienne.de:leonetienne/GeneralUtility.git

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GeneralUtility/.gitignore vendored
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build/
*.swp

45
GeneralUtility/GeneralUtility/CMakeLists.txt
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cmake_minimum_required(VERSION 3.16)
project(GeneralUtility)
###################
# Library project #
###################
set(CMAKE_CXX_STANDARD 17)
FILE(GLOB main_src src/*.cpp)
#add_library(${PROJECT_NAME}
# ${main_src}
#)
#target_include_directories(${PROJECT_NAME} PRIVATE
# include
#)
#########
# Tests #
#########
FILE(GLOB test_src test/*.cpp)
add_executable(test
test/Catch2.h
${test_src}
)
#target_link_libraries(test ${PROJECT_NAME})
target_include_directories(test PRIVATE
include
)
##############
# Executable #
##############
FILE(GLOB exec_src exec/*.cpp)
add_executable(exec
${exec_src}
)
#target_link_libraries(exec ${PROJECT_NAME})
target_include_directories(exec PRIVATE
include
)

1
GeneralUtility/GeneralUtility/doxygen/.gitignore vendored
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build/

2579
GeneralUtility/GeneralUtility/doxygen/doxyfig
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GeneralUtility/GeneralUtility/doxygen/doxyrun.sh
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#!zsh
# Copy repository readme here to be used as a cover page
tail ../../readme.md -n +2 > index.md
# Run doxygen
doxygen doxyfig
# Cleanup index.md
rm -f index.md

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GeneralUtility/GeneralUtility/exec/main.cpp
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#include <iostream>
int main() {
std::cout << "Hello, World!" << std::endl;
return 0;
}

234
GeneralUtility/GeneralUtility/include/GeneralUtility/BaseConversion.h
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#ifndef GENERALUTILITY_BASECONVERSION_H
#define GENERALUTILITY_BASECONVERSION_H
#include <algorithm>
#include <utility>
#include <sstream>
#include <stdexcept>
#include "ContainerUtility.h"
namespace Leonetienne {
namespace GeneralUtility {
class BaseConversion {
public:
//! Will divide a number of arbitrary base in `dividend` by an integer divisor.
//! This is a specific helper function for the base conversion functions.
//! \tparam T_Container The type of container used for the digitstring
//! \param dividend The number to be divided in listlike container-form (such as a string)
//! \param divisor The integer divisor
//! \param set The set/base of `dividend`
//! \return A pair of the result. (result, rest)
template<class T_Container>
static std::pair<T_Container, int>
DigitstringDivision(const T_Container &dividend, const unsigned int divisor, const T_Container &set);
//! Will convert a number of arbitrary base to base 10
//! \tparam T_Container The type of container used for the digitstring
//! \param num A listlike container representing the number (such as a string)
//! \param set The set/base of the number
//! \return A 64-bit integer representing the number
template<class T_Container>
static std::uint64_t BaseX_2_10(const T_Container &num, const T_Container &set);
//! Will convert a number to an arbitrary base.
//! This just a wrapper for BaseX_2_Y.
//! \tparam T_Container The type of container used for the digitstring
//! \param num The number to be converted
//! \param set The desired set/base for the output to be in. Should be a listlike container (such as a string)
//! \param minOutLen The minimum output length. Setting this will result in zero-padded output (Like, 00000001 instead of 1)
//! \return `num` in base `set`
template<class T_Container>
static T_Container
Base10_2_X(const std::uint64_t &num, const T_Container &set, const std::uint32_t minOutLen = 1);
//! Will convert a number from an arbitrary base to another arbitrary base.
//! \tparam T_ContainerIn The type of container used for the incoming digitstring
//! \tparam T_ContainerOut The type of container used for the outgoing digitstring
//! \param num A representation of a number in a listlike container (such as a string)
//! \param set_in The set/base of the input
//! \param set_out The desired set/base to output
//! \param minOutLen The minimum output length. Setting this will result in zero-padded output (Like, 00000001 instead of 1)
//! \return `num` in base `set_out`
template<class T_ContainerIn, class T_ContainerOut>
static T_ContainerOut
BaseX_2_Y(const T_ContainerIn &num, const T_ContainerIn &set_in, const T_ContainerOut &set_out,
const std::uint32_t minOutLen = 1);
private:
// No instantiation! >:(
BaseConversion();
};
namespace {
// Fast 64-bit int power function
inline std::uint64_t Powuli(const std::uint64_t &b, const std::uint64_t &e) {
std::uint64_t buf = 1;
for (std::uint64_t i = 0; i < e; i++)
buf *= b;
return buf;
}
}
template<class T_Container>
std::uint64_t BaseConversion::BaseX_2_10(const T_Container &num, const T_Container &set) {
// If base is 0, throw logic error
if (set.size() == 0)
throw std::logic_error("Can't convert from base0! Please supply a nonempty set!");
unsigned long long int buf = 0;
for (std::size_t i = 0; i < num.size(); i++) {
for (std::size_t j = 0; j < set.size(); j++) {
if (num[i] == set[j]) {
buf += Powuli((std::uint64_t) set.size(), (uint64_t) (num.size() - (i + 1))) * j;
break;
}
}
}
return buf;
}
// Based on: https://www.geeksforgeeks.org/divide-large-number-represented-string/
template<class T_Container>
std::pair<T_Container, int>
BaseConversion::DigitstringDivision(const T_Container &dividend, const unsigned int divisor,
const T_Container &set) {
// Quick rejects:
// No set? Throw logic error
if (set.size() == 0)
throw std::logic_error("Can't divide a number of base0! Please supply a nonempty set!");
// No division by 0
if (divisor == 0)
throw std::overflow_error("Division by zero!");
// Dividend size 0? Return 0.
if (dividend.size() == 0)
return std::make_pair(T_Container({set[0]}), 0);
// Verify that all digits are represented in the set/base
for (const auto &c: dividend)
if (ContainerUtility::Ord(c, set) == -1)
throw std::logic_error(
"The supplied dividend contains a digit that is not represented in the set/base!");
// Now for the actual algorithm:
T_Container result;
// Find prefix of number that is larger than divisor.
int idx = 0;
int temp = ContainerUtility::Ord(dividend[idx], set);
while (temp < divisor) {
idx++;
if (idx < dividend.size())
temp = temp * set.size() + ContainerUtility::Ord(dividend[idx], set);
else
break;
}
// Repeatedly divide divisor with temp. After
// every division, update temp to include one
// more digit.
int curRest = temp % divisor;
while (dividend.size() > idx) {
// Store result in answer i.e. temp / divisor
result.insert(result.cend(), set[temp / divisor]);
curRest = temp % divisor;
// Take next digit of number
idx++;
if (idx < dividend.size())
temp = (temp % divisor) * set.size() + ContainerUtility::Ord(dividend[idx], set);
}
// If divisor is greater than number
if (result.size() == 0) {
// Generate 0-value digitstring
result.clear();
result.insert(result.cend(), set[0]);
return std::make_pair(result, BaseX_2_10(dividend, set));
}
// else return the answer
return std::make_pair(result, curRest);
}
template<class T_ContainerIn, class T_ContainerOut>
T_ContainerOut
BaseConversion::BaseX_2_Y(const T_ContainerIn &num, const T_ContainerIn &set_in, const T_ContainerOut &set_out,
const std::uint32_t minOutLen) {
if ((set_in.size() == 0) || (set_out.size() == 0))
throw std::logic_error("Can't convert from or to base0! Please supply a nonempty set!");
T_ContainerOut result;
// Generate a 0-value string for inbase
const T_ContainerIn zeroInbase({set_in[0]});
if (num != zeroInbase) {
// Populate result object
{
T_ContainerIn buf = num;
while (buf != zeroInbase) {
const auto divRes = DigitstringDivision(buf, set_out.size(), set_in);
const std::uint64_t mod = divRes.second;
buf = divRes.first;
result.insert(result.cend(), set_out[mod]);
}
}
// Reverse result object item order
{
// Now reverse result
T_ContainerOut buf = result;
result.clear();
for (std::size_t i = 0; i < buf.size(); i++)
result.insert(result.cend(), buf[buf.size() - i - 1]);
}
} else {
// If num is 0, just pass a null-value. The algorithm would hang otherwise.
result.insert(result.cend(), set_out[0]);
}
// Add as much null-values to the left as requested.
if (result.size() < minOutLen) {
const std::size_t cachedLen = result.size();
const T_ContainerOut cachedStr = result;
result.clear();
for (std::size_t i = 0; i < minOutLen - cachedLen; i++)
result.insert(result.cend(), set_out[0]);
for (const auto &it: cachedStr)
result.insert(result.cend(), it);
}
return result;
}
template<class T_Container>
T_Container
BaseConversion::Base10_2_X(const std::uint64_t &num, const T_Container &set, const std::uint32_t minOutLen) {
// Convert num to a string
std::stringstream ss;
ss << num;
const std::string numStr = ss.str();
// Use BaseX_2_Y to convert to outbase
const T_Container convertedNum = BaseX_2_Y<std::string, T_Container>(numStr, "0123456789", set, minOutLen);
// return it
return convertedNum;
}
}
}
#endif //GENERALUTILITY_BASECONVERSION_H

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GeneralUtility/GeneralUtility/include/GeneralUtility/ContainerUtility.h
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#ifndef GENERALUTILITY_CONTAINERUTILITY_H
#define GENERALUTILITY_CONTAINERUTILITY_H
#include <algorithm>
namespace Leonetienne {
namespace GeneralUtility {
class ContainerUtility {
public:
//! Will return the index of `item` in `set`.
//! \tparam T_Type The type of `item`
//! \tparam T_Container The type of container
//! \param item The item to find the index for
//! \param set The container to be looking in
//! \return The index of `item` in `set`. -1 if not found.
template<typename T_Type, class T_Container>
static int Ord(const T_Type &item, const T_Container &set);
private:
// No instantiation! >:(
ContainerUtility();
};
template<typename T_Type, class T_Container>
int ContainerUtility::Ord(const T_Type &item, const T_Container &set) {
const auto result =
std::find_if(set.begin(), set.end(), [item](const T_Type &c) -> bool {
return c == item;
});
// No item found
if (result == set.end())
return -1;
else
return result - set.begin();
}
}
}
#endif //GENERALUTILITY_CONTAINERUTILITY_H

99
GeneralUtility/GeneralUtility/test/Base10_2_X.cpp
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#include <GeneralUtility/BaseConversion.h>
#include "Catch2.h"
using namespace Leonetienne::GeneralUtility;
// Tests base 10 to 10
TEST_CASE(__FILE__"/Base10_to_10", "[BaseConversion][Base10_2_X]")
{
// Setup
const std::string set = "0123456789";
const std::uint64_t in = 1990381;
const std::string expected_out = "1990381";
// Exercise
const std::string out = BaseConversion::Base10_2_X(in, set);
// Verify
REQUIRE(out == expected_out);
}
// Tests base 10 to 16
TEST_CASE(__FILE__"/Base10_to_16", "[BaseConversion][Base10_2_X]")
{
// Setup
const std::string set = "0123456789abcdef";
const std::uint64_t in = 0x1990381;
const std::string expected_out = "1990381";
// Exercise
const std::string out = BaseConversion::Base10_2_X(in, set);
// Verify
REQUIRE(out == expected_out);
}
// Tests base 10 to 2
TEST_CASE(__FILE__"/Base10_to_2", "[BaseConversion][Base10_2_X]")
{
// Setup
const std::string set = "01";
const std::uint64_t in = 0b10111011;
const std::string expected_out = "10111011";
// Exercise
const std::string out = BaseConversion::Base10_2_X(in, set);
// Verify
REQUIRE(out == expected_out);
}
// Tests base 10 to fucking big
TEST_CASE(__FILE__"/Base10_to_FuckingBig", "[BaseConversion][Base10_2_X]")
{
// Setup
const std::string set = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
const std::uint64_t in = 189434143264827;
const std::string expected_out = "rn5qZuTD";
// Exercise
const std::string out = BaseConversion::Base10_2_X(in, set);
// Verify
REQUIRE(out == expected_out);
}
// Tests that padding works
TEST_CASE(__FILE__"/TestPadding", "[BaseConversion][Base10_2_X]")
{
// Setup
const std::string set = "01";
const std::uint64_t in = 0b101;
const std::string expected_out = "00000101";
// Exercise
const std::string out = BaseConversion::Base10_2_X(in, set, 8);
// Verify
REQUIRE(out == expected_out);
}
// Tests that conversion with more complex 'digits' works. Weird-ass usecase
TEST_CASE(__FILE__"/BaseWeird_to_10", "[BaseConversion][Base10_2_X]")
{
// Setup
// Yes... That is actually our base...
const std::vector<std::string> set = { "Banana", "Apple", "Peach", "Strawberry", "Tomato", "Cherry" };
const std::uint64_t in = 69;
// Yes, that is a fucking number. It's 69 in whatever the fuck that base is
const std::vector<std::string> expected_out = { "Apple", "Cherry", "Strawberry" };
// Exercise
const std::vector<std::string> out = BaseConversion::Base10_2_X(in, set);
// Verify
REQUIRE(out == expected_out);
}

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GeneralUtility/GeneralUtility/test/BaseX_2_10.cpp
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#include <GeneralUtility/BaseConversion.h>
#include "Catch2.h"
using namespace Leonetienne::GeneralUtility;
// Tests base 10 to 10
TEST_CASE(__FILE__"/Base10_to_10", "[BaseConversion][BaseX_2_10]")
{
// Setup
const std::string set = "0123456789";
const std::string in = "1990381";
const std::uint64_t expected_out = 1990381;
// Exercise
const std::uint64_t out = BaseConversion::BaseX_2_10(in, set);
// Verify
REQUIRE(out == expected_out);
}
// Tests base 16 to 10
TEST_CASE(__FILE__"/Base16_to_10", "[BaseConversion][BaseX_2_10]")
{
// Setup
const std::string set = "0123456789abcdef";
const std::string in = "1a83f9cefa";
const std::uint64_t expected_out = 0x1a83f9cefa;
// Exercise
const std::uint64_t out = BaseConversion::BaseX_2_10(in, set);
// Verify
REQUIRE(out == expected_out);
}
// Tests base 2 to 10
TEST_CASE(__FILE__"/Base2_to_10", "[BaseConversion][BaseX_2_10]")
{
// Setup
const std::string set = "01";
const std::string in = "10101010110000111111";
const std::uint64_t expected_out = 0b10101010110000111111;
// Exercise
const std::uint64_t out = BaseConversion::BaseX_2_10(in, set);
// Verify
REQUIRE(out == expected_out);
}
// Tests base fucking big to 10
TEST_CASE(__FILE__"/BaseFuckingBig_to_10", "[BaseConversion][BaseX_2_10]")
{
// Setup
const std::string set = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
const std::string in = "rn5qZuTD";
const std::uint64_t expected_out = 189434143264827;
// Exercise
const std::uint64_t out = BaseConversion::BaseX_2_10(in, set);
// Verify
REQUIRE(out == expected_out);
}
// Tests that a logic error is thrown when the supplied set is empty
TEST_CASE(__FILE__"/NoSetSupplied", "[BaseConversion][BaseX_2_10]")
{
REQUIRE_THROWS_AS(
BaseConversion::BaseX_2_10<std::string>("699", "")
, std::logic_error);
}
// Tests that conversion with more complex 'digits' works. Weird-ass usecase
TEST_CASE(__FILE__"/BaseWeird_to_10", "[BaseConversion][BaseX_2_10]")
{
// Setup
// Yes... That is actually our base...
const std::vector<std::string> set = { "Banana", "Apple", "Peach", "Strawberry", "Tomato", "Cherry" };
// Yes, that is a fucking number. It's 69 in whatever the fuck that base is
const std::vector<std::string> in = { "Apple", "Cherry", "Strawberry" };
const std::uint64_t expected_out = 69;
// Exercise
const std::uint64_t out = BaseConversion::BaseX_2_10(in, set);
// Verify
REQUIRE(out == expected_out);
}

261
GeneralUtility/GeneralUtility/test/BaseX_2_Y.cpp
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#include <GeneralUtility/BaseConversion.h>
#include "Catch2.h"
using namespace Leonetienne::GeneralUtility;
// Tests base 10 to 10
TEST_CASE(__FILE__"/Base10_to_10", "[BaseConversion][BaseX_2_Y]")
{
// Setup
const std::string set_in = "0123456789";
const std::string set_out = "0123456789";
const std::string in = "1990381";
const std::string expected_out = "1990381";
// Exercise
const std::string out = BaseConversion::BaseX_2_Y(in, set_in, set_out);
// Verify
REQUIRE(out == expected_out);
}
// Tests base 10 to 16
TEST_CASE(__FILE__"/Base10_to_16", "[BaseConversion][BaseX_2_Y]")
{
// Setup
const std::string set_in = "0123456789";
const std::string set_out = "0123456789abcdef";
const std::string in = "1990381";
const std::string expected_out = "1e5eed";
// Exercise
const std::string out = BaseConversion::BaseX_2_Y(in, set_in, set_out);
// Verify
REQUIRE(out == expected_out);
}
// Tests base 16 to 10
TEST_CASE(__FILE__"/Base16_to_10", "[BaseConversion][BaseX_2_Y]")
{
// Setup
const std::string set_in = "0123456789abcdef";
const std::string set_out = "0123456789";
const std::string in = "1e5eed";
const std::string expected_out = "1990381";
// Exercise
const std::string out = BaseConversion::BaseX_2_Y(in, set_in, set_out);
// Verify
REQUIRE(out == expected_out);
}
// Tests base 2 to 16
TEST_CASE(__FILE__"/Base2_to_16", "[BaseConversion][BaseX_2_Y]")
{
// Setup
const std::string set_in = "01";
const std::string set_out = "0123456789abcdef";
const std::string in = "110000110001110011010111101011111";
const std::string expected_out = "18639af5f";
// Exercise
const std::string out = BaseConversion::BaseX_2_Y(in, set_in, set_out);
// Verify
REQUIRE(out == expected_out);
}
// Tests base 16 to 2
TEST_CASE(__FILE__"/Base16_to_2", "[BaseConversion][BaseX_2_Y]")
{
// Setup
const std::string set_in = "0123456789abcdef";
const std::string set_out = "01";
const std::string in = "18639af5f";
const std::string expected_out = "110000110001110011010111101011111";
// Exercise
const std::string out = BaseConversion::BaseX_2_Y(in, set_in, set_out);
// Verify
REQUIRE(out == expected_out);
}
// Tests base 16 to fucking big
TEST_CASE(__FILE__"/Base16_to_FuckingBig", "[BaseConversion][Base10_2_X]")
{
// Setup
const std::string set_in = "0123456789abcdef";
const std::string set_out = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
const std::string in = "2091f258";
const std::string expected_out = "aymsa";
// Exercise
const std::string out = BaseConversion::BaseX_2_Y(in, set_in, set_out);
// Verify
REQUIRE(out == expected_out);
}
// Tests that padding works
TEST_CASE(__FILE__"/TestPadding_ResultSmallEnough", "[BaseConversion][BaseX_2_Y]")
{
// Setup
const std::string set_in = "0123456789";
const std::string set_out = "01";
const std::string in = "3";
const std::string expected_out = "00000011"; // We are expecting the output to be padded to 8 digits.
// Exercise
const std::string out = BaseConversion::BaseX_2_Y(in, set_in, set_out, 8);
// Verify
REQUIRE(out == expected_out);
}
// Tests that nothing gets padded if the result is longer than the pad-length
TEST_CASE(__FILE__"/TestPadding_ResultLargerThanPad", "[BaseConversion][BaseX_2_Y]")
{
// Setup
const std::string set_in = "0123456789";
const std::string set_out = "01";
const std::string in = "500";
const std::string expected_out = "111110100";
// Exercise
const std::string out = BaseConversion::BaseX_2_Y(in, set_in, set_out, 8);
// Verify
REQUIRE(out == expected_out);
}
// Tests that BaseX_2_Y is not limited by integer boundaries
TEST_CASE(__FILE__"/NotLimitedByIntegerLimits", "[BaseConversion][BaseX_2_Y]")
{
// So what we're doing is the following:
// 1) Store a 4096-bit integer in a string (hex)
// 2) Convert that to base62
// 3) Convert the base62 number back to hex
// 4) Check if the strings are equal
//
// If we have integer limitations, the result should differ.
// Setup
const std::string set_hex = "0123456789ABCDEF";
const std::string set_base62 = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
// Create a 4096-bit number
const std::string hex_initial =
"655468576D5A7134743777397A24432646294A404E635266556A586E32723575"
"38782F4125442A472D4B6150645367566B59703373367639792442264528482B"
"4D6251655468576D5A7134743777217A25432A462D4A404E635266556A586E32"
"72357538782F413F4428472B4B6250645367566B597033733676397924422645"
"2948404D6351665468576D5A7134743777217A25432A462D4A614E645267556B"
"586E3272357538782F413F4428472B4B6250655368566D597133733676397924"
"4226452948404D635166546A576E5A7234753777217A25432A462D4A614E6452"
"67556B58703273357638792F413F4428472B4B6250655368566D597133743677"
"397A244326452948404D635166546A576E5A7234753778214125442A472D4B61"
"4E645267556B58703273357638792F423F4528482B4D6251655368566D597133"
"743677397A24432646294A404E635266556A576E5A7234753778214125442A47"
"2D4B6150645367566B59703273357638792F423F4528482B4D6251655468576D"
"5A7134743677397A24432646294A404E635266556A586E327235753878214125"
"442A472D4B6150645367566B597033733676397924423F4528482B4D62516554"
"68576D5A7134743777217A25432A46294A404E635266556A586E327235753878"
"2F413F4428472B4B6150645367566B5970337336763979244226452948404D63"
;
// Convert to base62
const std::string base62 = BaseConversion::BaseX_2_Y(hex_initial, set_hex, set_base62);
// Convert back to hex
const std::string hex_convertedBack = BaseConversion::BaseX_2_Y(base62, set_base62, set_hex);
// Verify that hex_initial equals hex_converted
REQUIRE(hex_initial == hex_convertedBack);
}
// Test to convert weird bases (longer to shorter)
TEST_CASE(__FILE__"/BaseLongCustom_to_ShortCustom", "[BaseConversion][BaseX_2_Y]")
{
// Let's convert from fruits to beers
// Setup
const std::vector<std::string> set_in = { "apple", "apricot", "avocado", "banana", "bell pepper", "bilberry" };
const std::vector<std::string> set_out = { "heinecken", "corona", "flensburger", "rothaus" };
const std::vector<std::string> in = { "apricot", "apple", "apple" };
const std::vector<std::string> expected_out = { "flensburger", "corona", "heinecken" };
// Exercise
const std::vector<std::string> out = BaseConversion::BaseX_2_Y(in, set_in, set_out);
// Verify
REQUIRE(out == expected_out);
}
// Test to convert weird bases (shorter to longer)
TEST_CASE(__FILE__"/BaseShortCustom_to_LongCustom", "[BaseConversion][BaseX_2_Y]")
{
// Let's convert from fruits to beers
// Setup
const std::vector<std::string> set_in = { "heinecken", "corona", "flensburger", "rothaus" };
const std::vector<std::string> set_out = { "apple", "apricot", "avocado", "banana", "bell pepper", "bilberry" };
const std::vector<std::string> in = { "flensburger", "corona", "heinecken" };
const std::vector<std::string> expected_out = { "apricot", "apple", "apple" };
// Exercise
const std::vector<std::string> out = BaseConversion::BaseX_2_Y(in, set_in, set_out);
// Verify
REQUIRE(out == expected_out);
}
// Tests that converting from a normal base to a custom base works
TEST_CASE(__FILE__"/Base10_to_fruits", "[BaseConversion][BaseX_2_Y]")
{
// Setup
const std::string set_in = "0123456789";
const std::vector<std::string> set_out = { "apple", "apricot", "avocado", "banana", "bell pepper", "bilberry" };
const std::string in = "599";
const std::vector<std::string> expected_out = { "avocado", "bell pepper", "banana", "bilberry" };
// Exercise
const std::vector<std::string> out = BaseConversion::BaseX_2_Y(in, set_in, set_out);
// Verify
REQUIRE(out == expected_out);
}
// Tests that converting from a custom base to a normal base works
TEST_CASE(__FILE__"/Base1_fruits_to_10", "[BaseConversion][BaseX_2_Y]")
{
// Setup
const std::vector<std::string> set_in = { "apple", "apricot", "avocado", "banana", "bell pepper", "bilberry" };
const std::string set_out = "0123456789";
const std::vector<std::string> in = { "avocado", "bell pepper", "banana", "bilberry" };
const std::string expected_out = "599";
// Exercise
const std::string out = BaseConversion::BaseX_2_Y(in, set_in, set_out);
// Verify
REQUIRE(out == expected_out);
}
// Tests that padding with custom digit types works
TEST_CASE(__FILE__"/TestPadding_CustomDigitTypes", "[BaseConversion][BaseX_2_Y]")
{
// Setup
const std::string set_in = "0123456789";
const std::vector<std::string> set_out = { "apple", "banana", "tomato" };
const std::string in = "50";
const std::vector<std::string> expected_out = { "apple", "apple", "apple", "apple", "banana", "tomato", "banana", "tomato" };
// Exercise
const std::vector<std::string> out = BaseConversion::BaseX_2_Y(in, set_in, set_out, 8);
// Verify
REQUIRE(out == expected_out);
}

17965
GeneralUtility/GeneralUtility/test/Catch2.h
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188
GeneralUtility/GeneralUtility/test/DigitstringDivision.cpp
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#include <GeneralUtility/BaseConversion.h>
#include "Catch2.h"
#include <string>
#include <vector>
#include <time.h>
#include <stdexcept>
using namespace Leonetienne::GeneralUtility;
// Tests that basic division (base10) is working, with oracle values
TEST_CASE(__FILE__"/Base10", "[BaseConversion][DigitstringDivision]")
{
const std::string set = "0123456789";
SECTION("No rest") {
const auto res = BaseConversion::DigitstringDivision<std::string>("200", 10, set);
REQUIRE(res.first == "20");
REQUIRE(res.second == 0);
}
SECTION("With rest") {
const auto res = BaseConversion::DigitstringDivision<std::string>("205", 10, set);
REQUIRE(res.first == "20");
REQUIRE(res.second == 5);
}
SECTION("With rest, and divisor > dividend") {
const auto res = BaseConversion::DigitstringDivision<std::string>("205", 299, set);
REQUIRE(res.first == "0");
REQUIRE(res.second == 205);
}
}
// Tests that basic division (base10) is working, by doing a lot of random, precalculated divisions
TEST_CASE(__FILE__"/Base10_Randoms", "[BaseConversion][DigitstringDivision]")
{
srand(time(0));
const std::string set = "0123456789";
// Test 1000 random numbers
for (std::size_t i = 0; i < 1000; i++) {
// Generate random input
const std::uint64_t i_dividend = rand();
const std::uint32_t i_divisor = rand() % 1000000;
// Precalculate expected output
const std::uint32_t expected_result = i_dividend / i_divisor;
const std::uint32_t expected_rest = i_dividend % i_divisor;
// Convert dividend to a string
std::stringstream ss;
ss << i_dividend;
const std::string dividend = ss.str();
// Compute results
const auto res = BaseConversion::DigitstringDivision(dividend, i_divisor, set);
const std::uint32_t actual_result = std::stoi(res.first);
const std::uint32_t actual_rest = res.second;
// Assertions
REQUIRE(actual_result == expected_result);
REQUIRE(actual_rest == expected_rest);
}
}
// Tests that base16 division is working, with oracle values
TEST_CASE(__FILE__"/Base16", "[BaseConversion][DigitstringDivision]")
{
const std::string set = "0123456789abcdef";
SECTION("No rest") {
const auto res = BaseConversion::DigitstringDivision<std::string>("1f4", 10, set);
REQUIRE(res.first == "32");
REQUIRE(res.second == 0);
}
SECTION("With rest") {
const auto res = BaseConversion::DigitstringDivision<std::string>("1fd", 10, set);
REQUIRE(res.first == "32");
REQUIRE(res.second == 9);
}
SECTION("With rest, and divisor > dividend") {
const auto res = BaseConversion::DigitstringDivision<std::string>("1f4", 999, set);
REQUIRE(res.first == "0");
REQUIRE(res.second == 500);
}
}
// Tests that base2 division is working, with oracle values
TEST_CASE(__FILE__"/Base2", "[BaseConversion][DigitstringDivision]")
{
const std::string set = "01";
SECTION("No rest") {
const auto res = BaseConversion::DigitstringDivision<std::string>("111110100", 10, set);
REQUIRE(res.first == "110010");
REQUIRE(res.second == 0);
}
SECTION("With rest") {
const auto res = BaseConversion::DigitstringDivision<std::string>("111111011", 10, set);
REQUIRE(res.first == "110010");
REQUIRE(res.second == 7);
}
SECTION("With rest, and divisor > dividend") {
const auto res = BaseConversion::DigitstringDivision<std::string>("111110100", 599, set);
REQUIRE(res.first == "0");
REQUIRE(res.second == 500);
}
}
// Tests that fucking big bases are working, with oracle values
TEST_CASE(__FILE__"/BaseFuckingBig", "[BaseConversion][DigitstringDivision]")
{
const std::string set = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
SECTION("No rest") {
const auto res = BaseConversion::DigitstringDivision<std::string>("9RieQV", 29915, set);
REQUIRE(res.first == "1DGL");
REQUIRE(res.second == 0);
}
SECTION("With rest") {
const auto res = BaseConversion::DigitstringDivision<std::string>("9RieQZ", 29915, set);
REQUIRE(res.first == "1DGL");
REQUIRE(res.second == 4);
}
SECTION("With rest, and divisor > dividend") {
const auto res = BaseConversion::DigitstringDivision<std::string>("8x", 600, set);
REQUIRE(res.first == "0");
REQUIRE(res.second == 555);
}
}
// Tests that having a dividend of size 0 returns 0
TEST_CASE(__FILE__"/DividendLengthZero", "[BaseConversion][DigitstringDivision]")
{
const auto& res = BaseConversion::DigitstringDivision<std::string>("", 19, "0123456789");
REQUIRE(res.first == "0");
REQUIRE(res.second == 0);
}
// Tests that a division by zero exception is thrown when appropriate
TEST_CASE(__FILE__"/DivisionByZero", "[BaseConversion][DigitstringDivision]")
{
REQUIRE_THROWS_AS(
BaseConversion::DigitstringDivision<std::string>("699", 0, "0123456789")
, std::overflow_error);
}
// Tests that a logic error is thrown when the supplied set is empty
TEST_CASE(__FILE__"/NoSetSupplied", "[BaseConversion][DigitstringDivision]")
{
REQUIRE_THROWS_AS(
BaseConversion::DigitstringDivision<std::string>("699", 5, "")
, std::logic_error);
}
// Tests that a logic error is thrown if the dividend contains a character not present in the set
TEST_CASE(__FILE__"/InvalidDigitsInDividend", "[BaseConversion][DigitstringDivision]")
{
REQUIRE_THROWS_AS(
BaseConversion::DigitstringDivision<std::string>("699z", 5, "0123465789")
, std::logic_error);
}
// Tests that weird, abstract bases are working, with oracle values
TEST_CASE(__FILE__"/BaseWeird", "[BaseConversion][DigitstringDivision]")
{
const std::vector<std::string> set = { "apple", "apricot", "avocado", "banana", "bell pepper", "bilberry" };
SECTION("No rest") {
const auto res = BaseConversion::DigitstringDivision<std::vector<std::string>>({"apricot", "bilberry", "bell pepper"}, 10, set);
REQUIRE(res.first == std::vector<std::string>({"apricot", "apricot"}));
REQUIRE(res.second == 0);
}
SECTION("With rest") {
const auto res = BaseConversion::DigitstringDivision<std::vector<std::string>>({"avocado", "apple", "banana"}, 10, set);
REQUIRE(res.first == std::vector<std::string>({"apricot", "apricot"}));
REQUIRE(res.second == 5);
}
SECTION("With rest, and divisor > dividend") {
const auto res = BaseConversion::DigitstringDivision<std::vector<std::string>>({"apricot", "bilberry", "bell pepper"}, 100, set);
REQUIRE(res.first == std::vector<std::string>({"apple"}));
REQUIRE(res.second == 70);
}
}

63
GeneralUtility/GeneralUtility/test/Ord.cpp
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#include <GeneralUtility/ContainerUtility.h>
#include "Catch2.h"
#include <string>
#include <vector>
using namespace Leonetienne::GeneralUtility;
// Tests that the Ord method works with characters in a string
TEST_CASE(__FILE__"/WorksWithCharsInString", "[ContainerUtility][Ord]")
{
const std::string set = "0123456789abcdef";
REQUIRE(ContainerUtility::Ord('0', set) == 0);
REQUIRE(ContainerUtility::Ord('1', set) == 1);
REQUIRE(ContainerUtility::Ord('2', set) == 2);
REQUIRE(ContainerUtility::Ord('3', set) == 3);
REQUIRE(ContainerUtility::Ord('4', set) == 4);
REQUIRE(ContainerUtility::Ord('5', set) == 5);
REQUIRE(ContainerUtility::Ord('6', set) == 6);
REQUIRE(ContainerUtility::Ord('7', set) == 7);
REQUIRE(ContainerUtility::Ord('8', set) == 8);
REQUIRE(ContainerUtility::Ord('9', set) == 9);
REQUIRE(ContainerUtility::Ord('a', set) == 10);
REQUIRE(ContainerUtility::Ord('b', set) == 11);
REQUIRE(ContainerUtility::Ord('c', set) == 12);
REQUIRE(ContainerUtility::Ord('d', set) == 13);
REQUIRE(ContainerUtility::Ord('e', set) == 14);
REQUIRE(ContainerUtility::Ord('f', set) == 15);
}
// Tests that, if an object is not found, -1 is returned
TEST_CASE(__FILE__"/ReturnsNeg1IfNotFound", "[ContainerUtility][Ord]")
{
const std::string set = "0123456789abcdef";
REQUIRE(ContainerUtility::Ord('z', set) == -1);
}
// Tests that Ord works with vectors <string>
TEST_CASE(__FILE__"/WorksWithVector_String", "[ContainerUtility][Ord]")
{
const std::vector<std::string> vec = { "Apple", "Banana", "Tomato", "Olives" };
REQUIRE(ContainerUtility::Ord(std::string("Apple"), vec) == 0);
REQUIRE(ContainerUtility::Ord(std::string("Banana"), vec) == 1);
REQUIRE(ContainerUtility::Ord(std::string("Tomato"), vec) == 2);
REQUIRE(ContainerUtility::Ord(std::string("Olives"), vec) == 3);
INFO("Now testing that unknown is -1");
REQUIRE(ContainerUtility::Ord(std::string("Pepper"), vec) == -1);
}
// Tests that Ord works with vectors <int>
TEST_CASE(__FILE__"/WorksWithVector_Int", "[ContainerUtility][Ord]")
{
const std::vector<int> vec = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
for (std::size_t i = 0 ; i < 10; i++)
REQUIRE(ContainerUtility::Ord((int)i, vec) == i);
INFO("Now testing that unknown is -1");
REQUIRE(ContainerUtility::Ord((int)99, vec) == -1);
}

2
GeneralUtility/GeneralUtility/test/main.cpp
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#define CATCH_CONFIG_MAIN
#include "Catch2.h"

674
GeneralUtility/LICENSE
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@ -1,674 +0,0 @@
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# GeneralUtility
is nothing but a useful, little utility library for my C++ projects.
It is public because it is a submodule required to compile my other open source projects.
No use in having open source projects if nobody's able to compile them, hehe.
# LICENSE
```
GNU GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
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Preamble
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for a work that has been modified or installed by the recipient, or for
the User Product in which it has been modified or installed. Access to a
network may be denied when the modification itself materially and
adversely affects the operation of the network or violates the rules and
protocols for communication across the network.
Corresponding Source conveyed, and Installation Information provided,
in accord with this section must be in a format that is publicly
documented (and with an implementation available to the public in
source code form), and must require no special password or key for
unpacking, reading or copying.
7. Additional Terms.
"Additional permissions" are terms that supplement the terms of this
License by making exceptions from one or more of its conditions.
Additional permissions that are applicable to the entire Program shall
be treated as though they were included in this License, to the extent
that they are valid under applicable law. If additional permissions
apply only to part of the Program, that part may be used separately
under those permissions, but the entire Program remains governed by
this License without regard to the additional permissions.
When you convey a copy of a covered work, you may at your option
remove any additional permissions from that copy, or from any part of
it. (Additional permissions may be written to require their own
removal in certain cases when you modify the work.) You may place
additional permissions on material, added by you to a covered work,
for which you have or can give appropriate copyright permission.
Notwithstanding any other provision of this License, for material you
add to a covered work, you may (if authorized by the copyright holders of
that material) supplement the terms of this License with terms:
a) Disclaiming warranty or limiting liability differently from the
terms of sections 15 and 16 of this License; or
b) Requiring preservation of specified reasonable legal notices or
author attributions in that material or in the Appropriate Legal
Notices displayed by works containing it; or
c) Prohibiting misrepresentation of the origin of that material, or
requiring that modified versions of such material be marked in
reasonable ways as different from the original version; or
d) Limiting the use for publicity purposes of names of licensors or
authors of the material; or
e) Declining to grant rights under trademark law for use of some
trade names, trademarks, or service marks; or
f) Requiring indemnification of licensors and authors of that
material by anyone who conveys the material (or modified versions of
it) with contractual assumptions of liability to the recipient, for
any liability that these contractual assumptions directly impose on
those licensors and authors.
All other non-permissive additional terms are considered "further
restrictions" within the meaning of section 10. If the Program as you
received it, or any part of it, contains a notice stating that it is
governed by this License along with a term that is a further
restriction, you may remove that term. If a license document contains
a further restriction but permits relicensing or conveying under this
License, you may add to a covered work material governed by the terms
of that license document, provided that the further restriction does
not survive such relicensing or conveying.
If you add terms to a covered work in accord with this section, you
must place, in the relevant source files, a statement of the
additional terms that apply to those files, or a notice indicating
where to find the applicable terms.
Additional terms, permissive or non-permissive, may be stated in the
form of a separately written license, or stated as exceptions;
the above requirements apply either way.
8. Termination.
You may not propagate or modify a covered work except as expressly
provided under this License. Any attempt otherwise to propagate or
modify it is void, and will automatically terminate your rights under
this License (including any patent licenses granted under the third
paragraph of section 11).
However, if you cease all violation of this License, then your
license from a particular copyright holder is reinstated (a)
provisionally, unless and until the copyright holder explicitly and
finally terminates your license, and (b) permanently, if the copyright
holder fails to notify you of the violation by some reasonable means
prior to 60 days after the cessation.
Moreover, your license from a particular copyright holder is
reinstated permanently if the copyright holder notifies you of the
violation by some reasonable means, this is the first time you have
received notice of violation of this License (for any work) from that
copyright holder, and you cure the violation prior to 30 days after
your receipt of the notice.
Termination of your rights under this section does not terminate the
licenses of parties who have received copies or rights from you under
this License. If your rights have been terminated and not permanently
reinstated, you do not qualify to receive new licenses for the same
material under section 10.
9. Acceptance Not Required for Having Copies.
You are not required to accept this License in order to receive or
run a copy of the Program. Ancillary propagation of a covered work
occurring solely as a consequence of using peer-to-peer transmission
to receive a copy likewise does not require acceptance. However,
nothing other than this License grants you permission to propagate or
modify any covered work. These actions infringe copyright if you do
not accept this License. Therefore, by modifying or propagating a
covered work, you indicate your acceptance of this License to do so.
10. Automatic Licensing of Downstream Recipients.
Each time you convey a covered work, the recipient automatically
receives a license from the original licensors, to run, modify and
propagate that work, subject to this License. You are not responsible
for enforcing compliance by third parties with this License.
An "entity transaction" is a transaction transferring control of an
organization, or substantially all assets of one, or subdividing an
organization, or merging organizations. If propagation of a covered
work results from an entity transaction, each party to that
transaction who receives a copy of the work also receives whatever
licenses to the work the party's predecessor in interest had or could
give under the previous paragraph, plus a right to possession of the
Corresponding Source of the work from the predecessor in interest, if
the predecessor has it or can get it with reasonable efforts.
You may not impose any further restrictions on the exercise of the
rights granted or affirmed under this License. For example, you may
not impose a license fee, royalty, or other charge for exercise of
rights granted under this License, and you may not initiate litigation
(including a cross-claim or counterclaim in a lawsuit) alleging that
any patent claim is infringed by making, using, selling, offering for
sale, or importing the Program or any portion of it.
11. Patents.
A "contributor" is a copyright holder who authorizes use under this
License of the Program or a work on which the Program is based. The
work thus licensed is called the contributor's "contributor version".
A contributor's "essential patent claims" are all patent claims
owned or controlled by the contributor, whether already acquired or
hereafter acquired, that would be infringed by some manner, permitted
by this License, of making, using, or selling its contributor version,
but do not include claims that would be infringed only as a
consequence of further modification of the contributor version. For
purposes of this definition, "control" includes the right to grant
patent sublicenses in a manner consistent with the requirements of
this License.
Each contributor grants you a non-exclusive, worldwide, royalty-free
patent license under the contributor's essential patent claims, to
make, use, sell, offer for sale, import and otherwise run, modify and
propagate the contents of its contributor version.
In the following three paragraphs, a "patent license" is any express
agreement or commitment, however denominated, not to enforce a patent
(such as an express permission to practice a patent or covenant not to
sue for patent infringement). To "grant" such a patent license to a
party means to make such an agreement or commitment not to enforce a
patent against the party.
If you convey a covered work, knowingly relying on a patent license,
and the Corresponding Source of the work is not available for anyone
to copy, free of charge and under the terms of this License, through a
publicly available network server or other readily accessible means,
then you must either (1) cause the Corresponding Source to be so
available, or (2) arrange to deprive yourself of the benefit of the
patent license for this particular work, or (3) arrange, in a manner
consistent with the requirements of this License, to extend the patent
license to downstream recipients. "Knowingly relying" means you have
actual knowledge that, but for the patent license, your conveying the
covered work in a country, or your recipient's use of the covered work
in a country, would infringe one or more identifiable patents in that
country that you have reason to believe are valid.
If, pursuant to or in connection with a single transaction or
arrangement, you convey, or propagate by procuring conveyance of, a
covered work, and grant a patent license to some of the parties
receiving the covered work authorizing them to use, propagate, modify
or convey a specific copy of the covered work, then the patent license
you grant is automatically extended to all recipients of the covered
work and works based on it.
A patent license is "discriminatory" if it does not include within
the scope of its coverage, prohibits the exercise of, or is
conditioned on the non-exercise of one or more of the rights that are
specifically granted under this License. You may not convey a covered
work if you are a party to an arrangement with a third party that is
in the business of distributing software, under which you make payment
to the third party based on the extent of your activity of conveying
the work, and under which the third party grants, to any of the
parties who would receive the covered work from you, a discriminatory
patent license (a) in connection with copies of the covered work
conveyed by you (or copies made from those copies), or (b) primarily
for and in connection with specific products or compilations that
contain the covered work, unless you entered into that arrangement,
or that patent license was granted, prior to 28 March 2007.
Nothing in this License shall be construed as excluding or limiting
any implied license or other defenses to infringement that may
otherwise be available to you under applicable patent law.
12. No Surrender of Others' Freedom.
If conditions are imposed on you (whether by court order, agreement or
otherwise) that contradict the conditions of this License, they do not
excuse you from the conditions of this License. If you cannot convey a
covered work so as to satisfy simultaneously your obligations under this
License and any other pertinent obligations, then as a consequence you may
not convey it at all. For example, if you agree to terms that obligate you
to collect a royalty for further conveying from those to whom you convey
the Program, the only way you could satisfy both those terms and this
License would be to refrain entirely from conveying the Program.
13. Use with the GNU Affero General Public License.
Notwithstanding any other provision of this License, you have
permission to link or combine any covered work with a work licensed
under version 3 of the GNU Affero General Public License into a single
combined work, and to convey the resulting work. The terms of this
License will continue to apply to the part which is the covered work,
but the special requirements of the GNU Affero General Public License,
section 13, concerning interaction through a network will apply to the
combination as such.
14. Revised Versions of this License.
The Free Software Foundation may publish revised and/or new versions of
the GNU General Public License from time to time. Such new versions will
be similar in spirit to the present version, but may differ in detail to
address new problems or concerns.
Each version is given a distinguishing version number. If the
Program specifies that a certain numbered version of the GNU General
Public License "or any later version" applies to it, you have the
option of following the terms and conditions either of that numbered
version or of any later version published by the Free Software
Foundation. If the Program does not specify a version number of the
GNU General Public License, you may choose any version ever published
by the Free Software Foundation.
If the Program specifies that a proxy can decide which future
versions of the GNU General Public License can be used, that proxy's
public statement of acceptance of a version permanently authorizes you
to choose that version for the Program.
Later license versions may give you additional or different
permissions. However, no additional obligations are imposed on any
author or copyright holder as a result of your choosing to follow a
later version.
15. Disclaimer of Warranty.
THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
16. Limitation of Liability.
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES.
17. Interpretation of Sections 15 and 16.
If the disclaimer of warranty and limitation of liability provided
above cannot be given local legal effect according to their terms,
reviewing courts shall apply local law that most closely approximates
an absolute waiver of all civil liability in connection with the
Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:
<program> Copyright (C) <year> <name of author>
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<http://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<http://www.gnu.org/philosophy/why-not-lgpl.html>.
```