fix(file): fixed tests and large file reading on linux

.gitignore

@@ -65,5 +65,7 @@ compile_commands.json
 CTestTestfile.cmake
 _deps
 CMakeUserPresets.json
-
 build
+
+# clangd
+.cache/

CMakeLists.txt

@@ -11,10 +11,11 @@ target_include_directories(cosms-core PUBLIC ${PROJECT_SOURCE_DIR}/include)
 if (MSVC)
 	target_compile_options(cosms-core PRIVATE /W4)
 else()
-	target_compile_options(cosms-core PRIVATE -wall -Wextra -pedantic)
+    target_compile_options(cosms-core PRIVATE -Wall -Wextra -pedantic)
 endif()
 
-add_executable(cosms-core-test ${PROJECT_SOURCE_DIR}/tests/main.c)
+file(GLOB_RECURSE SRC_TEST_FILES "${PROJECT_SOURCE_DIR}/tests/*.c")
+add_executable(cosms-core-test ${SRC_TEST_FILES})
 
 target_include_directories(cosms-core-test PRIVATE ${PROJECT_SOURCE_DIR}/tests)
 target_link_libraries(cosms-core-test cosms-core)

include/cosms-core/file.h

@@ -1,7 +1,34 @@
+/*
+ * Copyright (C) Tristan Franssen, <tristanfranssen@strawhats.nl>.
+ *
+ * This software is licensed under the Apache License, Version 2.0 (the "License");
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License in the file LICENSE or at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ */
 #ifndef COSMS_CORE_FILE
 #define COSMS_CORE_FILE
 
-void cosms_core_file_read(char *path);
+#include <stdbool.h>
-void cosms_core_file_write(char *path);
+
+typedef enum {
+    COSMS_CORE_FILE_OK = 0,
+    COSMS_CORE_FILE_NOT_FOUND = -1,
+    COSMS_CORE_FILE_NO_ACCESS = -2,
+    COSMS_CORE_FILE_LIMIT_REACHED = -3,
+    COSMS_CORE_FILE_COULD_NOT_READ_SIZE = -4,
+    COSMS_CORE_FILE_UNKOWN_ERROR = -5,
+    COSMS_CORE_FILE_FAILED_TO_ALLOCATE = -6,
+    COSMS_CORE_FILE_FAILED_TO_READ = -7,
+    COSMS_CORE_FILE_FAILED_TO_WRITE = -8,
+    COSMS_CORE_FILE_STILL_OPEN = -9,
+} CosmsCoreFileError;
+
+CosmsCoreFileError cosms_core_file_read(const char *path, char **content, unsigned long long *size);
+CosmsCoreFileError cosms_core_file_write(const char *path, const char *content, unsigned long long size, bool override);
+
+CosmsCoreFileError cosms_core_file_delete(const char *path);
+
+const char *cosms_core_file_error_string(CosmsCoreFileError error);
 
 #endif

src/file.c

@@ -1,11 +1,318 @@
-#include <cosms-core/file.h>
+/*
+ * Copyright (C) Tristan Franssen, <tristanfranssen@strawhats.nl>.
+ *
+ * This software is licensed under the Apache License, Version 2.0 (the "License");
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License in the file LICENSE or at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ */
+#include "cosms-core/file.h"
 
-#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <limits.h>
 
-void cosms_core_file_read(char *path) {
+#if defined(__GNUC__)
-	printf("Hello, World!");
+#define _FILE_OFFSET_BITS_ 64
+
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <errno.h>
+#elif defined(_WIN32)
+#include <windows.h>
+#endif
+
+CosmsCoreFileError cosms_core_file_read(const char *path, char **content, unsigned long long *size) {
+    #if defined(__GNUC__)
+    int file = open(path, O_RDONLY);
+    if (file == -1) {
+        switch(errno) {
+            case ENOENT: 
+                return COSMS_CORE_FILE_NOT_FOUND;
+
+            case EACCES:
+                return COSMS_CORE_FILE_NO_ACCESS;
+
+            case EMFILE:
+            case ENFILE:
+                return COSMS_CORE_FILE_LIMIT_REACHED;
+
+            default:
+                return COSMS_CORE_FILE_UNKOWN_ERROR;
+        }
+    }
+    
+    struct stat file_stat;
+    if (stat(path, &file_stat) != 0) {
+        close(file);
+        return COSMS_CORE_FILE_COULD_NOT_READ_SIZE;
+    }
+
+    if (size != NULL) {
+        *size = file_stat.st_size;
+    }
+
+    *content = (char*)malloc((file_stat.st_size + 1) * sizeof(char));
+    if (content == NULL) {
+        close(file);
+        return COSMS_CORE_FILE_FAILED_TO_ALLOCATE;
+    }
+    
+    unsigned long long remaining_bytes = file_stat.st_size;
+    while (remaining_bytes != 0) {
+        unsigned int bytes_to_read;
+        if (remaining_bytes > UINT_MAX) {
+            bytes_to_read = UINT_MAX;
+        } else {
+            bytes_to_read = (unsigned int)remaining_bytes;
+        }
+
+        int read_bytes = read(file, (*content) + (file_stat.st_size - remaining_bytes), bytes_to_read);
+        if (read_bytes == -1) {
+            free(*content);
+            close(file);
+            return COSMS_CORE_FILE_FAILED_TO_READ;
+        }
+
+        remaining_bytes -= read_bytes;
+    }
+    
+    (*content)[file_stat.st_size] = '\0';
+    close(file);
+    #elif defined(_WIN32)
+    HANDLE file = CreateFile(path, GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
+    if (file == INVALID_HANDLE_VALUE) {
+        switch(GetLastError()) {
+            case ERROR_FILE_NOT_FOUND:
+            case ERROR_PATH_NOT_FOUND:
+                return COSMS_CORE_FILE_NOT_FOUND;
+
+            case ERROR_ACCESS_DENIED:
+            case ERROR_SHARING_VIOLATION:
+            case ERROR_LOCK_VIOLATION:
+                return COSMS_CORE_FILE_NO_ACCESS;
+
+            case ERROR_TOO_MANY_OPEN_FILES:
+                return COSMS_CORE_FILE_LIMIT_REACHED;
+
+            default:
+                return COSMS_CORE_FILE_UNKOWN_ERROR;
+        }
+    }
+
+    DWORD high_size;
+    DWORD low_size = GetFileSize(file, &high_size);
+    if (low_size == INVALID_FILE_SIZE && GetLastError() != NO_ERROR) {
+        CloseHandle(file);
+        return COSMS_CORE_FILE_COULD_NOT_READ_SIZE;
+    }
+
+    unsigned long long file_size = ((unsigned long long)high_size << 32) | low_size;
+
+    if (size != NULL) {
+        *size = file_size;
+    }
+
+    *content = (char*)malloc((file_size + 1) * sizeof(char));
+    if (content == NULL) {
+        CloseHandle(file);
+        return COSMS_CORE_FILE_FAILED_TO_ALLOCATE;
+    }
+
+    unsigned long long remaining_bytes = file_size;
+    while (remaining_bytes != 0) {
+        DWORD bytes_to_read, read_bytes;
+        if (remaining_bytes > UINT_MAX) {
+            bytes_to_read = UINT_MAX;
+        } else {
+            bytes_to_read = (DWORD)remaining_bytes;
+        }
+
+        if (!ReadFile(file, (*content) + (file_size - remaining_bytes), bytes_to_read, &read_bytes, NULL)) {
+            free(*content);
+            CloseHandle(file);
+            return COSMS_CORE_FILE_FAILED_TO_READ;
+        }
+
+        remaining_bytes -= read_bytes;
+    }
+
+    (*content)[file_size] = '\0';
+    CloseHandle(file);
+    #endif
+
+    return COSMS_CORE_FILE_OK;
 }
 
-void cosms_core_file_write(char *path) {
+CosmsCoreFileError cosms_core_file_write(const char *path, const char *content, unsigned long long size, bool override) {
-	printf("Hello, World");
+    #if defined(__GNUC__)
+    int file;
+    if (override) {
+        file = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
+    } else {
+        file = open(path, O_WRONLY | O_CREAT | O_APPEND, 0644);
+    }
+
+    if (file == -1) {
+        switch (errno) {
+            case ENOENT:
+                return COSMS_CORE_FILE_NOT_FOUND;
+
+            case EACCES:
+                return COSMS_CORE_FILE_NO_ACCESS;
+
+            case EMFILE:
+            case ENFILE:
+                return COSMS_CORE_FILE_LIMIT_REACHED;
+
+            default:
+                return COSMS_CORE_FILE_UNKOWN_ERROR;
+        }
+    }
+
+    unsigned long long remaining_bytes = size;
+    while (remaining_bytes != 0) {
+        unsigned int bytes_to_write;
+        if (remaining_bytes > UINT_MAX) {
+            bytes_to_write = UINT_MAX;
+        } else {
+            bytes_to_write = (unsigned int)remaining_bytes;
+        }
+
+        int written_bytes = write(file, content + (size - remaining_bytes), bytes_to_write);
+        if (written_bytes == -1) {
+            close(file);
+            return COSMS_CORE_FILE_FAILED_TO_WRITE;
+        }
+
+        remaining_bytes -= written_bytes;
+    }
+
+    close(file);
+    #elif defined(_WIN32)
+    HANDLE file;
+    if (override) {
+        file = CreateFile(path, GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
+    } else {
+        file = CreateFile(path, FILE_APPEND_DATA, 0, NULL, OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
+    }
+
+    if (file == INVALID_HANDLE_VALUE) {
+        switch(GetLastError()) {
+            case ERROR_FILE_NOT_FOUND:
+            case ERROR_PATH_NOT_FOUND:
+                return COSMS_CORE_FILE_NOT_FOUND;
+
+            case ERROR_ACCESS_DENIED:
+            case ERROR_SHARING_VIOLATION:
+            case ERROR_LOCK_VIOLATION:
+                return COSMS_CORE_FILE_NO_ACCESS;
+
+            case ERROR_TOO_MANY_OPEN_FILES:
+                return COSMS_CORE_FILE_LIMIT_REACHED;
+
+            default:
+                return COSMS_CORE_FILE_UNKOWN_ERROR;
+        }
+    }
+
+    unsigned long long remaining_bytes = size;
+    while (remaining_bytes != 0) {
+        DWORD bytes_to_write, written_bytes;
+        if (remaining_bytes > UINT_MAX) {
+            bytes_to_write = UINT_MAX;
+        } else {
+            bytes_to_write = (DWORD)remaining_bytes;
+        }
+
+        if (!WriteFile(file, content + (size - remaining_bytes), bytes_to_write, &written_bytes, NULL)) {
+            CloseHandle(file);
+            return COSMS_CORE_FILE_FAILED_TO_WRITE;
+        }
+
+        remaining_bytes -= written_bytes;
+    }
+
+    CloseHandle(file);
+    #endif
+
+    return COSMS_CORE_FILE_OK;
+}
+
+CosmsCoreFileError cosms_core_file_delete(const char *path) {
+    #if defined(__GNUC__)
+    if (unlink(path) == -1) {
+        switch (errno) {
+            case ENOENT:
+                return COSMS_CORE_FILE_NOT_FOUND;
+
+            case EACCES:
+                return COSMS_CORE_FILE_NO_ACCESS;
+
+            case EBUSY:
+                return COSMS_CORE_FILE_STILL_OPEN;
+
+            default:
+                return COSMS_CORE_FILE_UNKOWN_ERROR;
+        }
+    }
+    #elif defined(_WIN32)
+    if (!DeleteFile(path)) {
+        switch(GetLastError()) {
+            case ERROR_FILE_NOT_FOUND:
+            case ERROR_PATH_NOT_FOUND:
+                return COSMS_CORE_FILE_NOT_FOUND;
+
+            case ERROR_ACCESS_DENIED:
+                return COSMS_CORE_FILE_NO_ACCESS;
+
+            case ERROR_LOCK_VIOLATION:
+            case ERROR_SHARING_VIOLATION:
+                return COSMS_CORE_FILE_STILL_OPEN;
+
+            default:
+                return COSMS_CORE_FILE_UNKOWN_ERROR;
+        }
+    }
+    #endif
+
+    return COSMS_CORE_FILE_OK;
+}
+
+const char *cosms_core_file_error_string(CosmsCoreFileError error) {
+    switch(error) {
+        case COSMS_CORE_FILE_OK:
+            return "cosms-file everything ok";
+
+        case COSMS_CORE_FILE_NOT_FOUND:
+            return "cosms-file path not found";
+
+        case COSMS_CORE_FILE_NO_ACCESS:
+            return "cosms-file no access";
+
+        case COSMS_CORE_FILE_LIMIT_REACHED:
+            return "cosms-file to many open files";
+
+        case COSMS_CORE_FILE_COULD_NOT_READ_SIZE:
+            return "cosms-file failed to read size";
+
+        case COSMS_CORE_FILE_UNKOWN_ERROR:
+            return "cosms-file unkown error occured";
+
+        case COSMS_CORE_FILE_FAILED_TO_ALLOCATE:
+            return "cosms-file failed to allocate memory";
+
+        case COSMS_CORE_FILE_FAILED_TO_READ:
+            return "cosms-file failed to read content of file";
+
+        case COSMS_CORE_FILE_FAILED_TO_WRITE:
+            return "cosms-file failed to write content to file";
+
+        case COSMS_CORE_FILE_STILL_OPEN:
+            return "cosms-file still open";
+
+        default:
+            return NULL;
+    }
 }

tests/data/small-file.txt

@@ -0,0 +1 @@
+Hello, World!

tests/main.c

@@ -1,6 +1,9 @@
-#include <cosms-core/file.h>
+#include "unit/file.h"
+#include "unit/unit.h"
 
 int main(void) {
-	cosms_core_file_read("test.txt");
+    cosms_core_file_read_test();
+    cosms_core_file_write_test();
+    cosms_core_file_delete_test();
 	return 0;
 }

tests/test.h

@@ -0,0 +1,22 @@
+#ifndef COSMS_TEST
+#define COSMS_TEST
+
+#include <stdio.h>
+#include <stdbool.h>
+
+#define COSMS_CORE_TEST_HEADER(test_module_name) printf("----------------------------------------\n%s\n----------------------------------------\n", test_module_name);
+
+#define COSMS_CORE_TEST_START(test_name) printf("[*] running test %s...\n", test_name)
+#define COSMS_CORE_TEST_SUCCESS(test_name) printf("[+] test %s completed successfully!\n", test_name);
+#define COSMS_CORE_TEST_FAIL(test_name, error) printf("[-] test %s failed with error: %s\n", test_name, error)
+
+static inline bool cosms_core_test_assert(const char *test_name, bool expression, const char *error_message) {
+    if (!expression) {
+        printf("[-] test %s failed with error: %s\n", test_name, error_message);
+        return false;
+    }
+
+    return true;
+}
+
+#endif

tests/unit/file.c

@@ -0,0 +1,192 @@
+#include "test.h"
+#include "unit/file.h"
+
+#include <cosms-core/file.h>
+
+#include <string.h>
+#include <stdlib.h>
+
+void cosms_core_file_read_test(void) {
+    COSMS_CORE_TEST_HEADER("file read");
+
+    const char *current_test_name = "reading small file";
+    COSMS_CORE_TEST_START(current_test_name);
+
+    unsigned long long file_size;
+    char *file_buffer;
+    CosmsCoreFileError error = cosms_core_file_read("tests/data/small-file.txt", &file_buffer, &file_size);
+    if (cosms_core_test_assert(current_test_name, error == COSMS_CORE_FILE_OK, cosms_core_file_error_string(error))) {
+        const char *expected_result = "Hello, World!";
+        if (cosms_core_test_assert(current_test_name, file_size == strlen(expected_result) && strcmp(expected_result, file_buffer) == 0, "result does not match expected result")) {
+            COSMS_CORE_TEST_SUCCESS(current_test_name);
+        }
+    }
+
+    free(file_buffer);
+
+    current_test_name = "reading large file";
+    COSMS_CORE_TEST_START(current_test_name);
+
+    file_size = 0;
+    file_buffer = NULL;
+    error = cosms_core_file_read("tests/data/large-file.txt", &file_buffer, &file_size);
+    if (cosms_core_test_assert(current_test_name, error == COSMS_CORE_FILE_OK, cosms_core_file_error_string(error))) {
+        unsigned long long expected_size = 5242880000ULL;
+        char *expected_result = (char*)malloc((expected_size + 1) * sizeof(char));
+        if (!expected_result) {
+            printf("[-] failed to allocate memory for test aborting file read tests...\n");
+            free(file_buffer);
+            return;
+        }
+
+        memset(expected_result, 'a', expected_size);
+        expected_result[expected_size] = '\0';
+
+        if (cosms_core_test_assert(current_test_name, file_size == expected_size && strcmp(expected_result, file_buffer) == 0, "result does not match expected result")) {
+            COSMS_CORE_TEST_SUCCESS(current_test_name);
+        }
+
+        free(expected_result);
+    }
+
+    free(file_buffer);
+
+    current_test_name = "reading non existing file";
+    COSMS_CORE_TEST_START(current_test_name);
+
+    file_size = 0;
+    file_buffer = NULL;
+    error = cosms_core_file_read("non-existing-file.cosms", &file_buffer, &file_size);
+    if (cosms_core_test_assert(current_test_name, error == COSMS_CORE_FILE_NOT_FOUND, cosms_core_file_error_string(error))) {
+        COSMS_CORE_TEST_SUCCESS(current_test_name);
+    }
+
+    free(file_buffer);
+}
+
+void cosms_core_file_write_test(void) {
+    COSMS_CORE_TEST_HEADER("file write");
+
+    const char *current_test_name = "writting small file";
+    COSMS_CORE_TEST_START(current_test_name);
+
+    char *file_buffer = "Hello, World!";
+    CosmsCoreFileError error = cosms_core_file_write("tests/data/small-write-file.txt", file_buffer, strlen(file_buffer), true);
+    if (cosms_core_test_assert(current_test_name, error == COSMS_CORE_FILE_OK, cosms_core_file_error_string(error))) {
+        char *file_content;
+        error = cosms_core_file_read("tests/data/small-write-file.txt", &file_content, NULL);
+        if (cosms_core_test_assert(current_test_name, error == COSMS_CORE_FILE_OK, cosms_core_file_error_string(error))) {
+            if (cosms_core_test_assert(current_test_name, strcmp(file_buffer, file_content) == 0, "file content not what was written")) {
+                COSMS_CORE_TEST_SUCCESS(current_test_name);
+            }
+        }
+
+        free(file_content);
+    }
+
+    current_test_name = "writting big file";
+    COSMS_CORE_TEST_START(current_test_name);
+
+    unsigned long long large_file_size = 5242880000ULL;
+    char *large_file_buffer = (char*)malloc((large_file_size + 1) * sizeof(char));
+    if (!large_file_buffer) {
+        printf("[-] failed to allocate memory for test aborting file read tests...\n");
+        free(large_file_buffer);
+        return;
+    }
+
+    memset(large_file_buffer, 'a', large_file_size);
+    large_file_buffer[large_file_size] = '\0';
+
+    error = cosms_core_file_write("tests/data/large-write-file.txt", large_file_buffer, large_file_size, true);
+    if (cosms_core_test_assert(current_test_name, error == COSMS_CORE_FILE_OK, cosms_core_file_error_string(error))) {
+        char *file_content;
+        error = cosms_core_file_read("tests/data/large-write-file.txt", &file_content, NULL);
+        if (cosms_core_test_assert(current_test_name, error == COSMS_CORE_FILE_OK, cosms_core_file_error_string(error))) {
+            if (cosms_core_test_assert(current_test_name, strcmp(large_file_buffer, file_content) == 0, "file content not what was written")) {
+                COSMS_CORE_TEST_SUCCESS(current_test_name);
+            }
+        }
+
+        free(file_content);
+    }
+
+    free(large_file_buffer);
+
+    current_test_name = "appending file";
+    COSMS_CORE_TEST_START(current_test_name);
+
+    error = cosms_core_file_write("tests/data/small-write-file.txt", file_buffer, strlen(file_buffer), false);
+    if (cosms_core_test_assert(current_test_name, error == COSMS_CORE_FILE_OK, cosms_core_file_error_string(error))) {
+        char *file_content;
+        error = cosms_core_file_read("tests/data/small-write-file.txt", &file_content, NULL);
+        if (cosms_core_test_assert(current_test_name, error == COSMS_CORE_FILE_OK, cosms_core_file_error_string(error))) {
+            const char *expected_result = "Hello, World!Hello, World!";
+            if (cosms_core_test_assert(current_test_name, strcmp(expected_result, file_content) == 0, "file content not what was written")) {
+                COSMS_CORE_TEST_SUCCESS(current_test_name);
+            }
+        }
+        
+        free(file_content);
+    }
+
+    current_test_name = "appending to non existing file";
+    COSMS_CORE_TEST_START(current_test_name);
+
+    error = cosms_core_file_write("tests/data/append-write-file.txt", file_buffer, strlen(file_buffer), false);
+    if (cosms_core_test_assert(current_test_name, error == COSMS_CORE_FILE_OK, cosms_core_file_error_string(error))) {
+        char *file_content;
+        error = cosms_core_file_read("tests/data/append-write-file.txt", &file_content, NULL);
+        if (cosms_core_test_assert(current_test_name, error == COSMS_CORE_FILE_OK, cosms_core_file_error_string(error))) {
+            if (cosms_core_test_assert(current_test_name, strcmp(file_buffer, file_content) == 0, "file content not what was written")) {
+                COSMS_CORE_TEST_SUCCESS(current_test_name);
+            }
+        }
+
+        free(file_content);
+    }
+}
+
+void cosms_core_file_delete_test(void) {
+    COSMS_CORE_TEST_HEADER("file delete");
+
+    const char *current_test_name = "deleting small file";
+    COSMS_CORE_TEST_START(current_test_name);
+
+    CosmsCoreFileError error = cosms_core_file_delete("tests/data/small-write-file.txt");
+    if (cosms_core_test_assert(current_test_name, error == COSMS_CORE_FILE_OK, cosms_core_file_error_string(error))) {
+        char *file_content = NULL;
+        error = cosms_core_file_read("tests/data/small-write-file.txt", &file_content, NULL);
+        if (cosms_core_test_assert(current_test_name, error == COSMS_CORE_FILE_NOT_FOUND, cosms_core_file_error_string(error))) {
+            COSMS_CORE_TEST_SUCCESS(current_test_name);
+        }
+
+        if (file_content != NULL) {
+            free(file_content);
+        }
+    }
+
+    current_test_name = "deleting large file";
+    COSMS_CORE_TEST_START(current_test_name);
+
+    error = cosms_core_file_delete("tests/data/append-write-file.txt");
+    if (cosms_core_test_assert(current_test_name, error == COSMS_CORE_FILE_OK, cosms_core_file_error_string(error))) {
+        char *file_content = NULL;
+        error = cosms_core_file_read("tests/data/append-write-file.txt", &file_content, NULL);
+        if (cosms_core_test_assert(current_test_name, error == COSMS_CORE_FILE_NOT_FOUND, cosms_core_file_error_string(error))) {
+            COSMS_CORE_TEST_SUCCESS(current_test_name);
+        }
+
+        if (file_content != NULL) {
+            free(file_content);
+        }
+    }
+
+    current_test_name = "deleting non existing file";
+    COSMS_CORE_TEST_START(current_test_name);
+
+    error = cosms_core_file_delete("non-existing-file.cosms");
+    if (cosms_core_test_assert(current_test_name, error == COSMS_CORE_FILE_NOT_FOUND, cosms_core_file_error_string(error))) {
+        COSMS_CORE_TEST_SUCCESS(current_test_name);
+    }
+}

tests/unit/file.h

@@ -0,0 +1,10 @@
+#ifndef COSMS_CORE_FILE_TEST
+#define COSMS_CORE_FILE_TEST
+
+#include <stdbool.h>
+
+void cosms_core_file_read_test();
+void cosms_core_file_write_test();
+void cosms_core_file_delete_test();
+
+#endif

tests/unit/unit.h

@@ -0,0 +1,6 @@
+#ifndef COSMS_UNIT
+#define COSMS_UNIT
+
+#include "file.h"
+
+#endif