/*

Copyright (C) 2011 Markus Kauppila <markus.kauppila@gmail.com>

This software is provided 'as-is', without any express or implied

warranty. In no event will the authors be held liable for any damages

arising from the use of this software.

Permission is granted to anyone to use this software for any purpose,

including commercial applications, and to alter it and redistribute it

freely, subject to the following restrictions:

1. The origin of this software must not be misrepresented; you must not

claim that you wrote the original software. If you use this software

in a product, an acknowledgment in the product documentation would be

appreciated but is not required.

2. Altered source versions must be plainly marked as such, and must not be

misrepresented as being the original software.

3. This notice may not be removed or altered from any source distribution.

*/

#include "SDL/SDL.h"

#include <stdio.h>

#include <stdlib.h>

#include <unistd.h>

#include <string.h>

#include <dirent.h>

#include <sys/types.h>

#include <sys/stat.h>

#include "../../include/SDL_test.h"

#include "../../config.h"

#include "../libSDLtest/fuzzer/fuzzer.h"

#include "../libSDLtest/plain_logger.h"

#include "../libSDLtest/xml_logger.h"

#include "../libSDLtest/logger_helpers.h"

#include "logger.h"

#include "support.h"

//!< Function pointer to a test case function

typedef void (*TestCaseFp)(void *arg);

//!< Function pointer to a test case init function

typedef void (*InitTestInvironmentFp)(Uint64, SDL_bool);

//!< Function pointer to a test case quit function

typedef int (*QuitTestInvironmentFp)(void);

//!< Function pointer to a test case set up function

typedef void (*TestCaseSetUpFp)(void *arg);

//!< Function pointer to a test case tear down function

typedef void (*TestCaseTearDownFp)(void *arg);

//!< Function pointer to a function which returns the failed assert count

typedef int (*CountFailedAssertsFp)(void);

//!< Flag for executing tests in-process

static int execute_inproc = 0;

//!< Flag for only printing out the test names

static int only_print_tests = 0;

//!< Flag for executing only test with selected name

static int only_selected_test = 0;

//!< Flag for executing only the selected test suite

static int only_selected_suite = 0;

//!< Flag for executing only tests that contain certain string in their name

static int only_tests_with_string = 0;

//!< Flag for enabling XML logging

static int xml_enabled = 0;

//! Flag for enabling user-supplied style sheet for XML test report

static int custom_xsl_enabled = 0;

//! Flag for disabling xsl-style from xml report

static int xsl_enabled = 0;

//! Flag for enabling universal timeout for tests

static int universal_timeout_enabled = 0;

//! Flag for enabling verbose logging

static int enable_verbose_logger = 0;

//! Flag for using user supplied run seed

static int userRunSeed = 0;

//! Whether or not logger should log to stdout instead of file

static int log_stdout_enabled = 1;

//! Whether or not dummy suite should be included to the test run

static int include_dummy_suite = 0;

//!< Size of the test and suite name buffers

#define NAME_BUFFER_SIZE 1024

//!< Name of the selected test

char selected_test_name[NAME_BUFFER_SIZE];

//!< Name of the selected suite

char selected_suite_name[NAME_BUFFER_SIZE];

//!< substring of test case name

char testcase_name_substring[NAME_BUFFER_SIZE];

//! Name for user-supplied XSL style sheet name

char xsl_stylesheet_name[NAME_BUFFER_SIZE];

//! User-suppled timeout value for tests

int universal_timeout = -1;

//! Default directory of the test suites

#define DEFAULT_TEST_DIRECTORY "tests/"

//! Default directory for placing log files

#define DEFAULT_LOG_DIRECTORY "logs"

//! Default directory of the test suites

#define DEFAULT_LOG_FILENAME "testrun"

//! Defines directory separator

#define DIRECTORY_SEPARATOR '/'

#define DUMMY_TEST_NAME "libtestdummy"

//! Name of the default stylesheet

const char *defaultXSLStylesheet = "style.xsl";

//! Fuzzer seed for the harness

char *runSeed = NULL;

//! Execution key that user supplied via command options

Uint64 userExecKey = 0;

//! How man time a test will be invocated

int testInvocationCount = 1;

//! Stores the basename for log files

char log_basename[NAME_BUFFER_SIZE];

//! Stores directory name for placing the logs

char log_directory[NAME_BUFFER_SIZE];

// \todo add comments

int totalTestFailureCount = 0, totalTestPassCount = 0, totalTestSkipCount = 0;

int testFailureCount = 0, testPassCount = 0, testSkipCount = 0;

/*!

* Holds information about test suite such as it's name

* and pointer to dynamic library. Implemented as linked list.

*/

typedef struct TestSuiteReference {

char *name; //!< test suite name

char *directoryPath; //!< test suites path (eg. tests/libtestsuite)

void *library; //!< pointer to shared/dynamic library implementing the suite

} TestSuiteReference;

/*!

* Holds information about the tests that will be executed.

*

* Implemented as linked list.

*/

typedef struct TestCaseItem {

char *testName;

char *suiteName;

char *description;

long requirements;

long timeout;

InitTestInvironmentFp initTestEnvironment;

TestCaseSetUpFp testSetUp;

TestCaseFp testCase;

TestCaseTearDownFp testTearDown;

QuitTestInvironmentFp quitTestEnvironment;

} TestCase;

/*! Some function prototypes. Add the rest of functions and move to runner.h */

TestCaseFp LoadTestCaseFunction(void *suite, char *testName);

InitTestInvironmentFp LoadInitTestInvironmentFunction(void *suite);

QuitTestInvironmentFp LoadQuitTestInvironmentFunction(void *suite);

TestCaseReference **QueryTestCaseReferences(void *library);

TestCaseSetUpFp LoadTestSetUpFunction(void *suite);

TestCaseTearDownFp LoadTestTearDownFunction(void *suite);

CountFailedAssertsFp LoadCountFailedAssertsFunction(void *suite);

void KillHungTestInChildProcess(int signum);

void UnloadTestSuites(TestSuiteReference *suites);

int FilterTestCase(TestCaseReference *testReference);

int HandleChildProcessReturnValue(int stat_lock);

/*! Pointers to selected logger implementation */

RunStartedFp RunStarted = NULL;

RunEndedFp RunEnded = NULL;

SuiteStartedFp SuiteStarted = NULL;

SuiteEndedFp SuiteEnded = NULL;

TestStartedFp TestStarted = NULL;

TestEndedFp TestEnded = NULL;

AssertFp Assert = NULL;

AssertWithValuesFp AssertWithValues = NULL;

AssertSummaryFp AssertSummary = NULL;

LogFp Log = NULL;

/*!

* Scans the tests/ directory and returns the names

* of the dynamic libraries implementing the test suites.

*

* Note: currently function assumes that test suites names

* are in following format: libtestsuite.dylib or libtestsuite.so.

*

* Note: if only_selected_suite flags is non-zero, only the selected

* test will be loaded.

*

* \param directoryName Name of the directory which will be scanned

* \param extension What file extension is used with dynamic objects

*

* \return Pointer to TestSuiteReference which holds all the info about suites

*/

TestSuiteReference *

ScanForTestSuites(char *directoryName, char *extension)

{

typedef struct dirent Entry;

TestSuiteReference *suites = NULL;

TestSuiteReference *reference = NULL;

Entry *entry = NULL;

DIR *directory = NULL;

if(directoryName == NULL || extension == NULL ||

SDL_strlen(directoryName) == 0 || SDL_strlen(extension) == 0) {

return NULL;

}

directory = opendir(directoryName);

if(!directory) {

fprintf(stderr, "Failed to open test suite directory: %s\n", directoryName);

perror("Error message");

exit(2);

}

while( (entry = readdir(directory)) ) {

// discards . and .. and hidden files starting with dot and directories etc.

if(strlen(entry->d_name) > 2 && entry->d_name[0] != '.' && entry->d_type == DT_REG) {

const char *delimiters = ".";

char *name = strtok(entry->d_name, delimiters);

char *ext = strtok(NULL, delimiters);

if(name == NULL || ext == NULL) {

goto error;

}

int ok = 1; // on default, we want to include all tests

// filter out all other suites but the selected test suite

if(only_selected_suite) {

ok = SDL_strncmp(selected_suite_name, name, NAME_BUFFER_SIZE) == 0;

}

if(SDL_strncmp(name, DUMMY_TEST_NAME, NAME_BUFFER_SIZE) == 0) {

if(include_dummy_suite) {

ok = 1;

} else {

ok = 0;

}

}

if(ok && SDL_strncmp(ext, extension, SDL_strlen(extension)) == 0) {

// create test suite reference

reference = (TestSuiteReference *) SDL_malloc(sizeof(TestSuiteReference));

if(reference == NULL) {

goto error;

}

memset(reference, 0, sizeof(TestSuiteReference));

const Uint32 dirSize = SDL_strlen(directoryName);

const Uint32 extSize = SDL_strlen(ext);

const Uint32 nameSize = SDL_strlen(name) + 1;

// copy the name

reference->name = SDL_malloc(nameSize * sizeof(char));

if(reference->name == NULL) {

goto error;

}

SDL_snprintf(reference->name, nameSize, "%s", name);

// copy the directory path

const Uint32 dpSize = dirSize + nameSize + 1 + extSize + 1;

reference->directoryPath = SDL_malloc(dpSize * sizeof(char));

if(reference->directoryPath == NULL) {

goto error;

}

SDL_snprintf(reference->directoryPath, dpSize, "%s%s.%s",

directoryName, name, ext);

reference->next = suites;

suites = reference;

}

}

}

goto finished;

error:

if(reference) {

SDL_free(reference->name);

SDL_free(reference->directoryPath);

SDL_free(reference);

}

// Unload all the suites that are loaded thus far

UnloadTestSuites(suites);

suites = NULL;

finished:

if(directory) {

closedir(directory);

}

return suites;

}

/*!

* Loads test suite which is implemented as dynamic library.

*

* \param suite Reference to test suite that'll be loaded

*

* \return Pointer to loaded test suite, or NULL if library could not be loaded

*/

void *

LoadTestSuite(const TestSuiteReference *suite)

{

void *library = SDL_LoadObject(suite->directoryPath);

if(library == NULL) {

fprintf(stderr, "Loading %s failed\n", suite->name);

fprintf(stderr, "%s\n", SDL_GetError());

}

}

/*!

* Goes through all the given TestSuiteReferences

* and loads the dynamic libraries. Updates the suites

* parameter on-the-fly and returns it.

*

* \param suites Suites that will be loaded

*

* \return Updated TestSuiteReferences with pointer to loaded libraries

*/

TestSuiteReference *

LoadTestSuites(TestSuiteReference *suites)

{

TestSuiteReference *reference = NULL;

for(reference = suites; reference; reference = reference->next) {

reference->library = LoadTestSuite(reference);

}

}

/*!

* Unloads the given TestSuiteReferences. Frees all

* the allocated resources including the dynamic libraries.

*

* \param suites TestSuiteReferences for deallocation process

*/

void

UnloadTestSuites(TestSuiteReference *suites)

{

TestSuiteReference *ref = suites;

while(ref) {

if(ref->name)

SDL_free(ref->name);

if(ref->directoryPath)

SDL_free(ref->directoryPath);

if(ref->library)

SDL_UnloadObject(ref->library);

TestSuiteReference *temp = ref->next;

SDL_free(ref);

ref = temp;

}

}

/*!

* Goes through the previously loaded test suites and

* loads test cases from them. Test cases are filtered

* during the process. Function will only return the

* test cases which aren't filtered out.

*

* \param suites previously loaded test suites

*

* \return Test cases that survived filtering process.

*/

TestCase *

LoadTestCases(TestSuiteReference *suites)

{

TestCase *testCases = NULL;

TestSuiteReference *suiteReference = NULL;

for(suiteReference = suites; suiteReference; suiteReference = suiteReference->next) {

TestCaseReference **tests = QueryTestCaseReferences(suiteReference->library);

TestCaseReference *testReference = NULL;

int counter = 0;

for(testReference = tests[counter]; testReference; testReference = tests[++counter]) {

//void *suite = suiteReference->library;

// Load test case functions

InitTestInvironmentFp initTestEnvironment = LoadInitTestInvironmentFunction(suiteReference->library);

QuitTestInvironmentFp quitTestEnvironment = LoadQuitTestInvironmentFunction(suiteReference->library);

TestCaseSetUpFp testSetUp = LoadTestSetUpFunction(suiteReference->library);

TestCaseTearDownFp testTearDown = LoadTestTearDownFunction(suiteReference->library);

TestCaseFp testCase = LoadTestCaseFunction(suiteReference->library, testReference->name);

CountFailedAssertsFp countFailedAsserts = LoadCountFailedAssertsFunction(suiteReference->library);

// Do the filtering

if(FilterTestCase(testReference)) {

TestCase *item = SDL_malloc(sizeof(TestCase));

memset(item, 0, sizeof(TestCase));

item->initTestEnvironment = initTestEnvironment;

item->quitTestEnvironment = quitTestEnvironment;

item->testSetUp = testSetUp;

item->testTearDown = testTearDown;

item->testCase = testCase;

item->countFailedAsserts = countFailedAsserts;

// copy suite name

int length = SDL_strlen(suiteReference->name) + 1;

item->suiteName = SDL_malloc(length);

if(item->suiteName == NULL) {

SDL_free(item);

return NULL;

}

strncpy(item->suiteName, suiteReference->name, length);

// copy test name

length = SDL_strlen(testReference->name) + 1;

item->testName = SDL_malloc(length);

if(item->testName == NULL) {

SDL_free(item->suiteName);

SDL_free(item);

return NULL;

}

strncpy(item->testName, testReference->name, length);

// copy test description

length = SDL_strlen(testReference->description) + 1;

item->description = SDL_malloc(length);

if(item->description == NULL) {

SDL_free(item->description);

SDL_free(item->suiteName);

SDL_free(item);

return NULL;

}

strncpy(item->description, testReference->description, length);

item->requirements = testReference->requirements;

item->timeout = testReference->timeout;

// prepend the list

item->next = testCases;

testCases = item;

//printf("Added test: %s\n", testReference->name);

}

}

}

return testCases;

}

/*!

* Unloads the given TestCases. Frees all the resources

* allocated for test cases.

*

* \param testCases Test cases to be deallocated

*/

void

UnloadTestCases(TestCase *testCases)

{

TestCase *ref = testCases;

while(ref) {

if(ref->testName)

SDL_free(ref->testName);

if(ref->suiteName)

SDL_free(ref->suiteName);

if(ref->description)

SDL_free(ref->description);

TestCase *temp = ref->next;

SDL_free(ref);

ref = temp;

}

}

/*!

* Filters a test case based on its properties in TestCaseReference and user

* preference.

*

* \return Non-zero means test will be added to execution list, zero means opposite

*/

int

FilterTestCase(TestCaseReference *testReference)

{

int retVal = 1;

if(testReference->enabled == TEST_DISABLED) {

retVal = 0;

}

if(only_selected_test) {

if(SDL_strncmp(testReference->name, selected_test_name, NAME_BUFFER_SIZE) == 0) {

retVal = 1;

} else {

retVal = 0;

}

}

if(only_tests_with_string) {

if(strstr(testReference->name, testcase_name_substring) != NULL) {

retVal = 1;

} else {

retVal = 0;

}

}

return retVal;

}

/*!

* Loads the test case references from the given test suite.

* \param library Previously loaded dynamic library AKA test suite

* \return Pointer to array of TestCaseReferences or NULL if function failed

*/

TestCaseReference **

QueryTestCaseReferences(void *library)

{

suite = (TestCaseReference **(*)(void)) SDL_LoadFunction(library, "QueryTestSuite");

if(suite == NULL) {

fprintf(stderr, "Loading QueryTestCaseReferences() failed.\n");

fprintf(stderr, "%s\n", SDL_GetError());

}

TestCaseReference **tests = suite();

if(tests == NULL) {

fprintf(stderr, "Failed to load test references.\n");

fprintf(stderr, "%s\n", SDL_GetError());

}

}

/*!

* Loads test case from a test suite

*

* \param suite a test suite

* \param testName Name of the test that is going to be loaded

*

* \return Function Pointer (TestCase) to loaded test case, NULL if function failed

*/

TestCaseFp

LoadTestCaseFunction(void *suite, char *testName)

{

TestCaseFp test = (TestCaseFp) SDL_LoadFunction(suite, testName);

if(test == NULL) {

fprintf(stderr, "Loading test %s failed, test == NULL\n", testName);

fprintf(stderr, "%s\n", SDL_GetError());

}

}

/*!

* Loads function that sets up a fixture for a test case. Note: if there's

* no SetUp function present in the suite the function will return NULL.

*

* \param suite Used test suite

*

* \return Function pointer to test case's set up function

*/

TestCaseSetUpFp

LoadTestSetUpFunction(void *suite) {

}

/*!

* Loads function that tears down a fixture for a test case. Note: if there's

* no TearDown function present in the suite the function will return NULL.

*

* \param suite Used test suite

*

* \return Function pointer to test case's tear down function

*/

TestCaseTearDownFp

LoadTestTearDownFunction(void *suite) {

}

/*!

* Loads function that initialises the test environment for

* a test case in the given suite.

*

* \param suite Used test suite

*

* \return Function pointer (InitTestInvironmentFp) which points to loaded init function. NULL if function fails.

*/

InitTestInvironmentFp

LoadInitTestInvironmentFunction(void *suite) {

InitTestInvironmentFp testEnvInit = (InitTestInvironmentFp) SDL_LoadFunction(suite, "_InitTestEnvironment");

if(testEnvInit == NULL) {

fprintf(stderr, "Loading _InitTestInvironment function failed, testEnvInit == NULL\n");

fprintf(stderr, "%s\n", SDL_GetError());

}

}

/*!

* Loads function that deinitialises the test environment (and returns

* the test case's result) created for the test case in the given suite.

*

* \param suite Used test suite

*

* \return Function pointer (QuitTestInvironmentFp) which points to loaded init function. NULL if function fails.

*/

QuitTestInvironmentFp

LoadQuitTestInvironmentFunction(void *suite) {

QuitTestInvironmentFp testEnvQuit = (QuitTestInvironmentFp) SDL_LoadFunction(suite, "_QuitTestEnvironment");

if(testEnvQuit == NULL) {

fprintf(stderr, "Loading _QuitTestEnvironment function failed, testEnvQuit == NULL\n");

fprintf(stderr, "%s\n", SDL_GetError());

}

}

/*!

* Loads function that returns failed assert count in the current

* test environment

*

* \param suite Used test suite

*

* \return Function pointer to _CountFailedAsserts function

*/

CountFailedAssertsFp

LoadCountFailedAssertsFunction(void *suite) {

CountFailedAssertsFp countFailedAssert = (CountFailedAssertsFp) SDL_LoadFunction(suite, "_CountFailedAsserts");

if(countFailedAssert == NULL) {

fprintf(stderr, "Loading _CountFailedAsserts function failed, countFailedAssert == NULL\n");

fprintf(stderr, "%s\n", SDL_GetError());

}

}

#define USE_SDL_TIMER_FOR_TIMEOUT

/*!

* Set timeout for test.

*

* \param timeout Timeout interval in seconds!

* \param callback Function that will be called after timeout has elapsed

*/

void

SetTestTimeout(int timeout, void (*callback)(int))

{

if(callback == NULL) {

fprintf(stderr, "Error: timeout callback can't be NULL");

}

if(timeout < 0) {

fprintf(stderr, "Error: timeout value must be bigger than zero.");

}

#ifdef USE_SDL_TIMER_FOR_TIMEOUT

/* Init SDL timer if not initialized before */

if(SDL_WasInit(SDL_INIT_TIMER) == 0) {

if(SDL_InitSubSystem(SDL_INIT_TIMER)) {

fprintf(stderr, "Error: Failed to init timer subsystem");

fprintf(stderr, "%s\n", SDL_GetError());

}

}

/* Note:

* SDL_Init(SDL_INIT_TIMER) should be successfully called before using this

*/

int timeoutInMilliseconds = tm * 1000;

SDL_TimerID timerID = SDL_AddTimer(timeoutInMilliseconds, (SDL_TimerCallback) callback, 0x0);

if(timerID == 0) {

fprintf(stderr, "Error: Creation of SDL timer failed.\n");

fprintf(stderr, "Error: %s\n", SDL_GetError());

}

signal(SIGALRM, callback);

alarm((unsigned int) tm);

#endif

}

/*!

* Kills test that hungs. Test hungs when its execution

* takes longer than timeout specified for it.

*

* When test will be killed SIG_ALRM will be triggered and

* it'll call this function which kills the test process.

*

* Note: if runner is executed with --in-proc then hung tests

* can't be killed

*

* \param signum

*/

void

KillHungTestInChildProcess(int signum)

{

}

/*!

* Checks if given test case can be executed on the current platform.

*

* \param testCase Test to be checked

* \returns 1 if test is runnable, otherwise 0. On error returns -1

*/

int

CheckTestRequirements(TestCase *testCase)

{

if(testCase == NULL) {

fprintf(stderr, "TestCase parameter can't be NULL");

return -1;

}

if(testCase->requirements & TEST_REQUIRES_AUDIO) {

retVal = PlatformSupportsAudio();

}

if(testCase->requirements & TEST_REQUIRES_STDIO) {

retVal = PlatformSupportsStdio();

}

}

/*

* Execute a test. Loads the test, executes it and

* returns the tests return value to the caller.

*

* \param testItem Test to be executed

* \param test result

*/

int

RunTest(TestCase *testCase, Uint64 execKey)

{

if(!testCase) {

return -1;

}

int runnable = CheckTestRequirements(testCase);

if(runnable != 1) {

return TEST_RESULT_SKIPPED;

}

if(testCase->timeout > 0 || universal_timeout > 0) {

if(execute_inproc) {

Log(time(0), "Test asked for timeout which is not supported.");

}

else {

SetTestTimeout(testCase->timeout, KillHungTestInChildProcess);

}

}

testCase->initTestEnvironment(execKey, execute_inproc);

if(testCase->testSetUp) {

testCase->testSetUp(0x0);

}

int cntFailedAsserts = testCase->countFailedAsserts();

if(cntFailedAsserts != 0) {

return TEST_RESULT_SETUP_FAILURE;

}

testCase->testCase(0x0);

if(testCase->testTearDown) {

testCase->testTearDown(0x0);

}

return testCase->quitTestEnvironment();

}

/*!

* Sets up a test case. Decideds wheter the test will

* be executed in-proc or out-of-proc.

*

* \param testItem The test case that will be executed

* \param execKey Execution key for the test case

*

* \return The return value of the test. Zero means success, non-zero failure.

*/

int

ExecuteTest(TestCase *testItem, Uint64 execKey) {

int retVal = -1;

if(execute_inproc) {

retVal = RunTest(testItem, execKey);

} else {

int childpid = fork();

if(childpid == 0) {

exit(RunTest(testItem, execKey));

} else {

int stat_lock = -1;

wait(&stat_lock);

retVal = HandleChildProcessReturnValue(stat_lock);

}

}

if(retVal == TEST_RESULT_SKIPPED) {

testSkipCount++;

totalTestSkipCount++;

}

else if(retVal) {

totalTestFailureCount++;

testFailureCount++;

}

else {

totalTestPassCount++;

testPassCount++;

}

// return the value for logger

return retVal;

}

/*!

* If using out-of-proc execution of tests. This function

* will handle the return value of the child process

* and interprets it to the runner. Also prints warnings

* if child was aborted by a signela.

*

* \param stat_lock information about the exited child process

*

* \return 0 if test case succeeded, 1 otherwise

*/

int

HandleChildProcessReturnValue(int stat_lock)

{

int returnValue = -1;

if(WIFEXITED(stat_lock)) {

returnValue = WEXITSTATUS(stat_lock);

} else if(WIFSIGNALED(stat_lock)) {

int signal = WTERMSIG(stat_lock);

// \todo add this to logger (add signal number)

Log(time(0), "FAILURE: test was aborted due to %d\n", signal);

returnValue = 1;

}

return returnValue;

}

/*!

* Generates a random run seed for the harness. Seed

* can contain characters 0-9A-Z

*

* \param length The length of the generated seed

*

* \returns The generated seed

*/

char *

GenerateRunSeed(const int length)

{

if(length <= 0) {

fprintf(stderr, "Error: length of the harness seed can't be less than zero\n");

return NULL;

}

char *seed = SDL_malloc((length + 1) * sizeof(char));

if(seed == NULL) {

fprintf(stderr, "Error: malloc for run seed failed\n");

return NULL;

}

int counter = 0;

for( ; counter < length - 1; ++counter) {

int number = abs(utl_random(&randomContext));

char ch = (char) (number % (91 - 48)) + 48;

if(ch >= 58 && ch <= 64) {

ch = 65;

}

seed[counter] = ch;

}

}

/*!

* Sets up the logger.

*

* \return Logger data structure (that needs be deallocated)

*/

LoggerData *

SetUpLogger(const int log_stdout_enabled, const int xml_enabled, const int xsl_enabled,

LoggerData *loggerData = SDL_malloc(sizeof(LoggerData));

if(loggerData == NULL) {

fprintf(stderr, "Error: Logger data structure not allocated.");

return NULL;

}

memset(loggerData, 0, sizeof(LoggerData));

if(log_stdout_enabled == 1) {

loggerData->stdoutEnabled = 1;

loggerData->filename = NULL;

} else {

loggerData->stdoutEnabled = 0;

// create directory (if it doesn't exist yet)

unsigned int mode = S_IRWXU | S_IRGRP | S_ISUID;

mkdir(log_directory, mode);

/* Combine and create directory for log file */

const Uint32 directoryLength = SDL_strlen(log_directory);