reformat the codebase

include/common.h

@@ -30,19 +30,24 @@ enum configurations {
     fflush(stdout);                                                           \
     fprintf(stream, __VA_ARGS__);                                             \
 } while (0)
+
 #define PERROR_MACRO(s) do {                                                  \
     int errnum = errno;                                                       \
     char* err_msg = strerror(errnum); /* XXX: Thread race possible */         \
     fflush(stdout);                                                           \
     fprintf(stderr, "%s:%d: %s: %s\n", __FILE__, __LINE__, (s), err_msg);     \
 } while (0)
-#define FATAL_ERROR_PRINT(...)                                                \
+
+#define FATAL_ERROR_PRINT(...) do {                                           \
     FPRINTF_MACRO(stderr, __VA_ARGS__);                                       \
-    putc('\n', stderr)
+    putc('\n', stderr);                                                       \
+} while (0)
+
 #define FATAL_ERROR(...) do {                                                 \
     FATAL_ERROR_PRINT(__VA_ARGS__);                                           \
     exit(EXIT_FAILURE);                                                       \
 } while (0)
+
 #define FATAL_ERROR_RET(...) do {                                             \
     FATAL_ERROR_PRINT(__VA_ARGS__);                                           \
     return EXIT_FAILURE;                                                      \
@@ -83,10 +88,9 @@ typedef off_t file_offset_t;
 #define INT2STR(x) STRINGIZE(x)
 #define YES_NO(x) ((x) ? STR_YN_YES : STR_YN_NO)
 #define READ_CONFIG(x) (config & (x))
-#define SET_CONFIG(x)                                                         \
+#define SET_CONFIG(x) config |= (x)
-    config |= (x)
+#define CLEAR_CONFIG(x) config &= ~(x)
-#define CLEAR_CONFIG(x)                                                       \
+
-    config &= ~(x)
 #define LOOP_ACTION_CONFIG(f, x)                                              \
     f(x);                                                                     \
     continue

include/file_boundaries.h

@@ -1,9 +1,9 @@
 #ifndef _FILE_BOUNDARIES_H
 #define _FILE_BOUNDARIES_H
 
-#include <stdio.h>
-#include <stdint.h>
 #include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
 #include <stdlib.h>
 
 #include "common.h"

src/MTPRNG.c

@@ -31,24 +31,28 @@ void mt_seed(uint32_t* seed_ptr) {
 	                                 : *seed_ptr;
 
 	uint32_t x = seed;
-	for (mti = 0; mti < N; mti++) {
+
+	for (mti = 0; mti < N; mti++)
 		mt[mti] = (x = (UINT32_C(1812433253) * (x ^ (x >> 30)) + mti));
-	}
 }
 
 uint32_t mt_next(void) {
 	uint32_t y;
+
 	if (mti >= N) {
 		size_t kk;
+
 		for (kk = 0; kk < N_sub_M; kk++) {
 			y = (mt[kk] & UPPER_MASK) | (mt[kk + 1] & LOWER_MASK);
 			mt[kk] = mt[kk + (size_t) M] ^ (y >> 1) ^ ((y & 1) * MATRIX_A);
 		}
+
 		for (; kk < N_sub_1; kk++) {
 			y = (mt[kk] & UPPER_MASK) | (mt[kk + 1] & LOWER_MASK);
 			mt[kk] = mt[kk + M_sub_N] ^ (y >> 1) ^ ((y & 1) *
 			         MATRIX_A);
 		}
+
 		y = (mt[N_sub_1] & UPPER_MASK) | (mt[0] & LOWER_MASK);
 		mt[N_sub_1] = mt[M_sub_1] ^ (y >> 1) ^ ((y & 1) * MATRIX_A);
 		mti = 0;

src/atoumax_base10.c

@@ -3,6 +3,7 @@
 /* function implementations */
 uintmax_t atoumax_base10(const char* s) {
 	uintmax_t result = 0;
+
 	for (const char* p = s; *p != '\0'; ++p) {
 		char c = *p;
 
@@ -13,10 +14,12 @@ uintmax_t atoumax_base10(const char* s) {
 		}
 
 		uintmax_t digit = c - '0';
-		if ((uintmax_t) (result + digit) < result) {
+
+		if ((uintmax_t) (result + digit) < result)
 			FATAL_ERROR("Integer overflow (passed string = '%s')", s);
-		}
+
 		result = (result * 10) + digit;
 	}
+
 	return result;
 }

src/corrupter.c

@@ -34,11 +34,12 @@ static bool get_chance(uint16_t desired_chance) {
 
 	uint16_t cdf[UINT16_MAX_PLUS_1];
 	memset(cdf, 0, sizeof(cdf));
-	for (uint16_t i = 0; i < UINT16_MAX; i++) {
+
+	for (uint16_t i = 0; i < UINT16_MAX; i++)
 		cdf[i] = (i <= desired_chance) ? i + 1 : cdf[i - 1];
-	}
 
 	uint16_t random_number = mt_next() & UINT16_MAX;
+
 	return random_number < cdf[desired_chance];
 }
 
@@ -48,6 +49,7 @@ static bool is_line_ending(byte c) {
 
 Corrupter_Result* corrupt_file(Corrupter_Param* param) {
 	Corrupter_Result* result = malloc(sizeof(Corrupter_Result));
+
 	if (result == NULL)
 		return NULL;
 
@@ -111,6 +113,7 @@ Corrupter_Result* corrupt_file(Corrupter_Param* param) {
 		for (file_offset_t i = start; i < end; i++) {
 			FSEEK_MACRO(file, i, SEEK_SET);
 			byte byte_value;
+
 			if (fread(&byte_value, sizeof(byte), 1, file) != 1) {
 				result->error = true;
 				fclose(file);
@@ -125,6 +128,7 @@ Corrupter_Result* corrupt_file(Corrupter_Param* param) {
 			// generate bit mask
 			unsigned char damage_left = (unsigned char) param->threshold;
 			static bool bit_mask[CHAR_BIT];
+
 			for (unsigned char bit = 0; bit < CHAR_BIT; bit++) {
 				if (get_chance(probability) && (damage_left > 0)) {
 					bit_mask[bit] = true;
@@ -135,6 +139,7 @@ Corrupter_Result* corrupt_file(Corrupter_Param* param) {
 			}
 
 			bool damaged_byte = false;
+
 			for (unsigned char bit = 0; bit < threshold; bit++) {
 				if (bit_mask[bit] == false)
 					continue;
@@ -146,6 +151,7 @@ Corrupter_Result* corrupt_file(Corrupter_Param* param) {
 
 				// write the modified byte back to the file
 				FSEEK_MACRO(file, i, SEEK_SET);
+
 				if (fwrite(&byte_value, sizeof(byte), 1, file) == 1)
 					continue;
 
@@ -163,5 +169,6 @@ Corrupter_Result* corrupt_file(Corrupter_Param* param) {
 	}
 
 	result->error = false;
+
 	return result;
 }

src/endianness_tools.c

@@ -2,7 +2,7 @@
 
 #define ORDER_NATIVE_U32 0x01234567
 #define ORDER_LITTLE_ENDIAN_S4 "\x67\x45\x23\x01"
-#define ORDER_BIG_ENDIAN_S4 "\x01\x23\x45\x67"
+#define ORDER_BIG_ENDIAN_S4    "\x01\x23\x45\x67"
 #define ifeq_b32_ret(lhs, rhs, value) if (!memcmp(lhs, rhs, 4)) return value
 
 endianness_t detect_endianness(void) {
@@ -11,6 +11,7 @@ endianness_t detect_endianness(void) {
 
 	ifeq_b32_ret(as_bytes, ORDER_LITTLE_ENDIAN_S4, DETECTED_LITTLE_ENDIAN);
 	ifeq_b32_ret(as_bytes, ORDER_BIG_ENDIAN_S4,    DETECTED_BIG_ENDIAN   );
+
 	return UNSUPPORTED_ENDIANNESS;
 }
 
@@ -18,7 +19,9 @@ void reorder_b32(uint32_t* ptr) {
 	if (ptr == NULL)
 		return;
 
-	uint32_t result = ((*ptr >> 24) & 0xFF) | ((*ptr >> 8) & 0xFF00) |
+	uint32_t result =
-	                  ((*ptr << 8) & 0xFF0000) | ((*ptr << 24) & 0xFF000000);
+		((*ptr >> 24) & 0x000000FF) | ((*ptr >>  8) & 0x0000FF00) |
+		((*ptr <<  8) & 0x00FF0000) | ((*ptr << 24) & 0xFF000000);
+
 	*ptr = result;
 }

src/ends_with.c

@@ -16,10 +16,14 @@ bool ends_with_casefold(const char* str, const char* substr) {
 	if (str_len < substr_len)
 		return false;
 
-	for (const char* p = str + str_len - substr_len, * q = substr;
+	for (
-	     *p != '\0' && *q != '\0'; p++, q++) {
+		const char* p = str + str_len - substr_len, * q = substr;
+		*p != '\0' && *q != '\0';
+		p++, q++
+	) {
 		if (tolower(*p) != tolower(*q))
 			return false;
 	}
+
 	return true;
 }

src/file_boundaries.c

@@ -1,11 +1,11 @@
 #include "file_boundaries.h"
 
 /* macros: definitions */
-#define WAV_CHUNK_ID "RIFF"
+#define WAV_CHUNK_ID         "RIFF"
 #define WAV_SUBCHUNK_DATA_ID "data"
 
 /* macros: lambdas */
-#define DETERMINE_BOUNDARIES_FREAD_ERROR_HANDLING                             \
+#define DETERMINE_BOUNDARIES_FREAD_ERROR_HANDLING do {                        \
     if (feof(file)) {                                                         \
         boundaries->invalid_file = true;                                      \
         return boundaries;                                                    \
@@ -13,18 +13,22 @@
                                                                               \
     PERROR_MACRO("fread");                                                    \
     exit(EXIT_FAILURE);                                                       \
-    return NULL
+                                                                              \
+    return NULL;                                                              \
+} while (0)
 
 /* function implementations */
 file_boundaries_t* determine_boundaries_BMP(FILE* file) {
 	rewind(file);
 	FATAL_ERROR("Feature 'determine_boundaries_BMP' not available. Coming "
 	            "soon!");
+
 	return false;
 }
 
 file_boundaries_t* determine_boundaries_WAV(FILE* file) {
 	file_boundaries_t* boundaries = malloc(sizeof(file_boundaries_t));
+
 	if (boundaries == NULL) {
 		PERROR_MACRO("fatal: malloc @ determine_boundaries_WAV");
 		exit(EXIT_FAILURE);
@@ -33,6 +37,7 @@ file_boundaries_t* determine_boundaries_WAV(FILE* file) {
 
 	// prepare
 	endianness_t endianness = detect_endianness();
+
 	if (endianness == UNSUPPORTED_ENDIANNESS) {
 		FATAL_ERROR("Unsupported endianness of the machine");
 		return NULL;
@@ -45,9 +50,8 @@ file_boundaries_t* determine_boundaries_WAV(FILE* file) {
 	char chunk_id[4];
 	uint32_t chunk_size;
 
-	if (fread(chunk_id, sizeof(char), 4, file) != 4) {
+	if (fread(chunk_id, sizeof(char), 4, file) != 4)
 		DETERMINE_BOUNDARIES_FREAD_ERROR_HANDLING;
-	}
 
 	if (strncmp(chunk_id, WAV_CHUNK_ID, 4)) {
 		boundaries->invalid_file = true;
@@ -55,17 +59,15 @@ file_boundaries_t* determine_boundaries_WAV(FILE* file) {
 	}
 
 	// Read the next 4 bytes (chunk size) and skip the rest of the RIFF chunk
-	if (fread(&chunk_size, sizeof(uint32_t), 1, file) != 1) {
+	if (fread(&chunk_size, sizeof(uint32_t), 1, file) != 1)
 		DETERMINE_BOUNDARIES_FREAD_ERROR_HANDLING;
-	}
 
 	FSEEK_MACRO(file, (file_offset_t) chunk_size - FILE_OFFSET_C(4), SEEK_CUR);
 
-	while (true) {
+	for (;;) {
 		if (fread(chunk_id, 1, 4, file) != 4 ||
-		    fread(&chunk_size, sizeof(uint32_t), 1, file) != 1) {
+		    fread(&chunk_size, sizeof(uint32_t), 1, file) != 1)
 			DETERMINE_BOUNDARIES_FREAD_ERROR_HANDLING;
-		}
 
 		if (need_to_reorder_values)
 			reorder_b32(&chunk_size);

src/file_type.c

@@ -4,12 +4,14 @@
 #define FILE_TYPE_CHECK_RET(ext, type)                                        \
     if (ends_with_casefold(file_name, ext) && is_valid_file(file, type))      \
         return true
-#define FILE_TYPE_FREAD_ERROR_HANDLING                                        \
+
+#define FILE_TYPE_FREAD_ERROR_HANDLING do {                                   \
     if (feof(file))                                                           \
         return false;                                                         \
                                                                               \
     PERROR_MACRO("fread");                                                    \
-    exit(EXIT_FAILURE)
+    exit(EXIT_FAILURE);                                                       \
+} while (0)
 
 /* function definitions */
 static bool header_check(FILE* file, const char* id, size_t length);
@@ -21,9 +23,8 @@ static bool header_check(FILE* file, const char* id, size_t length) {
 
 	for (size_t i = 0; i < length; i++) {
 		char c;
-		if (fread(&c, sizeof(char), 1, file) != 1) {
+		if (fread(&c, sizeof(char), 1, file) != 1)
 			FILE_TYPE_FREAD_ERROR_HANDLING;
-		}
 
 		if (c != id[i])
 			return false;

src/main.c

@@ -51,7 +51,7 @@ uint32_t PRNG_seed_value;
 uint8_t config = C_CONFIRM;
 
 /* macros: procedures */
-#define DOES_NOT_EXIST                                                        \
+#define ERROR_DOES_NOT_EXIST                                                  \
     if (errno == ENOENT) {                                                    \
         FPRINTF_MACRO(stderr, "Error: File %s doesn't exist\n", file_path);   \
         return EXIT_FAILURE;                                                  \
@@ -77,13 +77,16 @@ bool args_match(const char* arg, const char* args_list[]);
 #ifdef SYS_NT
 static char* correct_slashes(const char* path) {
 	char* new_path = strdup(path);
+
 	if (new_path == NULL)
 		return NULL;
 
 	char* ptr = new_path;
+
 	while (*ptr != '\0') {
 		if (*ptr == '\\')
 			*ptr = '/';
+
 		ptr++;
 	}
 
@@ -99,10 +102,12 @@ static char* my_basename(const char* raw_path) {
 		strdup
 #endif
 			(raw_path);
+
 	if (path == NULL)
 		return NULL;
 
 	char* base = malloc(FILENAME_MAX * sizeof(char));
+
 	if (base == NULL) {
 		free(path);
 		PERROR_MACRO("malloc");
@@ -113,6 +118,7 @@ static char* my_basename(const char* raw_path) {
 	size_t fname_len = strlen(path);
 
 	const char* last_slash = strrchr(path, '/');
+
 	if (last_slash != NULL)
 		fname_len = strlen(last_slash + 1);
 
@@ -129,6 +135,7 @@ static void parse_value(uint8_t destination, const char* arg) {
 		return;
 
 	uintmax_t result = atoumax_base10(arg);
+
 	switch (destination) {
 	case ARG_DEST_POSSIBILITY:
 		if (result == 0 || result > UINT16_MAX) {
@@ -163,6 +170,7 @@ static void parse_value(uint8_t destination, const char* arg) {
 	default:
 		FATAL_ERROR("Unknown argument destination (value = %" PRIu16 ")",
 		           destination);
+
 		return;
 	}
 }
@@ -223,9 +231,14 @@ int main(int argc, char** argv) {
 			"  -seed         : Specify a 32-bit seed for the PRNG. If you want "
 			"to keep it\n"
 			"                  random, set the option to `random`.\n",
-			program_name, UINT16_MAX, probability, threshold,
+			program_name,
-			(uintmax_t) SIZE_MAX, passes);
+			UINT16_MAX,
+			probability,
+			threshold,
+			(uintmax_t) SIZE_MAX,
+			passes);
 		free(program_name);
+
 		return EXIT_FAILURE;
 	}
 
@@ -280,27 +293,32 @@ int main(int argc, char** argv) {
 #ifdef SYS_UNIX_GENERAL
 	// check if the file is a directory
 	struct stat path_stat;
+
 	if (stat(file_path, &path_stat) != 0) {
-		if (errno == ENOENT) {
+		if (errno == ENOENT)
-			DOES_NOT_EXIST;
+			ERROR_DOES_NOT_EXIST;
-		}
+
 		PERROR_MACRO("stat");
+
 		return EXIT_FAILURE;
 	}
 
 	if (S_ISDIR(path_stat.st_mode)) {
 		FPRINTF_MACRO(stderr, "Error: %s is a directory\n", file_path);
+
 		return EXIT_FAILURE;
 	}
 #endif
 
 	// open the file
 	FILE* file = fopen(file_path, "rb+");
+
 	if (file == NULL) {
 #ifndef SYS_UNIX_GENERAL
-		DOES_NOT_EXIST;
+		ERROR_DOES_NOT_EXIST;
 #endif
 		PERROR_MACRO("fopen");
+
 		return EXIT_FAILURE;
 	}
 
@@ -320,11 +338,11 @@ int main(int argc, char** argv) {
 
 	// print configuration: custom seed
 	printf("> Custom seed: ");
-	if (READ_CONFIG(C_CUSTOM_SEED)) {
+
+	if (READ_CONFIG(C_CUSTOM_SEED))
 		printf("%" PRIu32 "\n", PRNG_seed_value);
-	} else {
+	else
 		puts(STR_YN_NO);
-	}
 
 	// print configuration: file type
 	printf("> File type: %s\n"
@@ -340,6 +358,7 @@ int main(int argc, char** argv) {
 	if (READ_CONFIG(C_CONFIRM)) {
 		printf("Are you sure? (Y/n): ");
 		fflush(stdout);
+
 		if ((getchar()) != (int) 'Y') {
 			printf("File corruption aborted.\n");
 			return EXIT_FAILURE;
@@ -364,12 +383,15 @@ int main(int argc, char** argv) {
 	};
 
 	Corrupter_Result* result = corrupt_file(&param);
+
 	if (result == NULL) {
 		PERROR_MACRO("corrupt_file memory allocation");
+
 		return EXIT_FAILURE;
 	} else if (result->error) {
 		free(result);
 		PERROR_MACRO("corrupt_file");
+
 		return EXIT_FAILURE;
 	}
 
@@ -379,11 +401,11 @@ int main(int argc, char** argv) {
 		size_t dmg = result->damaged_bytes, fsize = result->file_size,
 		       passes = param.passes;
 		printf("Byte hit counter: %" PRIuMAX " / %" PRIuMAX " = %.3Lf%%\n",
-		       (uintmax_t) dmg, (uintmax_t) (fsize * passes),
+		       (uintmax_t) dmg,
+		       (uintmax_t) (fsize * passes),
 		       ((long double) dmg * 100.l) / (long double) (fsize * passes));
-	} else {
+	} else
 		puts("No bytes were damaged");
-	}
 
 	free(result);
 

src/strdup.c

@@ -8,6 +8,7 @@ char* strdup(const char* s) {
 	}
 
 	char* copy = malloc((strlen(s) + 1) * sizeof(char));
+
 	if (copy == NULL)
 		return NULL;