Use PascalCase for constants

7 files changed, 210 insertions, 219 deletions

diff --git a/Makefile b/Makefile
index 9199a7b..018550f 100644
--- a/Makefile
+++ b/Makefile
@@ -17,9 +17,9 @@ client.o: help.h
 
 help.h:
 	head -c 4096 torus.dat \
-		| file2c -s -x 'static const uint8_t HELP_DATA[] = {' '};' \
+		| file2c -s -x 'static const uint8_t HelpData[] = {' '};' \
 		> help.h
-	echo 'static const struct Tile *HELP = (const struct Tile *)HELP_DATA;' \
+	echo 'static const struct Tile *Help = (const struct Tile *)HelpData;' \
 		>> help.h
 
 tags: *.h *.c
diff --git a/client.c b/client.c
index 66e6d08..d1c11ac 100644
--- a/client.c
+++ b/client.c
@@ -42,8 +42,8 @@
 
 #define CTRL(ch) ((ch) ^ 0x40)
 enum {
-	ESC = 0x1B,
-	DEL = 0x7F,
+	Esc = 0x1B,
+	Del = 0x7F,
 };
 
 static uint32_t log2(uint32_t n) {
@@ -62,13 +62,13 @@ static void curse(void) {
 		fprintf(stderr, "If you think it should, check TERM.\n");
 		exit(EX_CONFIG);
 	}
-	if (LINES < CELL_ROWS || COLS < CELL_COLS) {
+	if (LINES < CellRows || COLS < CellCols) {
 		endwin();
 		fprintf(
 			stderr,
 			"Sorry, your terminal is too small!\n"
 			"It must be at least %ux%u characters.\n",
-			CELL_COLS, CELL_ROWS
+			CellCols, CellRows
 		);
 		exit(EX_CONFIG);
 	}
@@ -84,12 +84,12 @@ static void curse(void) {
 		}
 	}
 
-	color_set(COLOR_WHITE, NULL);
-	bool hline = (LINES > CELL_ROWS);
-	bool vline = (COLS > CELL_COLS);
-	if (hline) mvhline(CELL_ROWS, 0, 0, CELL_COLS);
-	if (vline) mvvline(0, CELL_COLS, 0, CELL_ROWS);
-	if (hline && vline) mvaddch(CELL_ROWS, CELL_COLS, ACS_LRCORNER);
+	color_set(ColorWhite, NULL);
+	bool hline = (LINES > CellRows);
+	bool vline = (COLS > CellCols);
+	if (hline) mvhline(CellRows, 0, 0, CellCols);
+	if (vline) mvvline(0, CellCols, 0, CellRows);
+	if (hline && vline) mvaddch(CellRows, CellCols, ACS_LRCORNER);
 	color_set(0, NULL);
 
 	cbreak();
@@ -100,7 +100,7 @@ static void curse(void) {
 
 static attr_t colorAttr(uint8_t color) {
 	if (COLORS >= 16) return A_NORMAL;
-	return (color & COLOR_BRIGHT) ? A_BOLD : A_NORMAL;
+	return (color & ColorBright) ? A_BOLD : A_NORMAL;
 }
 static short colorPair(uint8_t color) {
 	if (COLORS >= 16) return color;
@@ -120,8 +120,8 @@ static void drawCell(
 }
 
 static void drawTile(const struct Tile *tile) {
-	for (uint8_t cellY = 0; cellY < CELL_ROWS; ++cellY) {
-		for (uint8_t cellX = 0; cellX < CELL_COLS; ++cellX) {
+	for (uint8_t cellY = 0; cellY < CellRows; ++cellY) {
+		for (uint8_t cellX = 0; cellX < CellCols; ++cellX) {
 			drawCell(tile, cellX, cellY, A_NORMAL);
 		}
 	}
@@ -152,32 +152,32 @@ static void serverPut(struct ServerMessage msg) {
 }
 
 static void serverCursor(struct ServerMessage msg) {
-	if (msg.cursor.oldCellX != CURSOR_NONE) {
+	if (msg.cursor.oldCellX != CursorNone) {
 		drawCell(&tile, msg.cursor.oldCellX, msg.cursor.oldCellY, A_NORMAL);
 	}
-	if (msg.cursor.newCellX != CURSOR_NONE) {
+	if (msg.cursor.newCellX != CursorNone) {
 		drawCell(&tile, msg.cursor.newCellX, msg.cursor.newCellY, A_REVERSE);
 	}
 }
 
-static const uint8_t MAP_X = (CELL_COLS / 2) - (3 * MAP_COLS / 2);
-static const uint8_t MAP_Y = (CELL_ROWS / 2) - (MAP_ROWS / 2);
+static const uint8_t MapX = (CellCols / 2) - (3 * MapCols / 2);
+static const uint8_t MapY = (CellRows / 2) - (MapRows / 2);
 
-static const wchar_t MAP_CELLS[5] = L" ░▒▓█";
-static const uint8_t MAP_COLORS[] = {
-	COLOR_BLUE, COLOR_CYAN, COLOR_GREEN, COLOR_YELLOW, COLOR_RED,
+static const wchar_t MapCells[5] = L" ░▒▓█";
+static const uint8_t MapColors[] = {
+	ColorBlue, ColorCyan, ColorGreen, ColorYellow, ColorRed,
 };
 
 static void serverMap(void) {
-	int t = MAP_Y - 1;
-	int l = MAP_X - 1;
-	int b = MAP_Y + MAP_ROWS;
-	int r = MAP_X + 3 * MAP_COLS;
-	color_set(colorPair(COLOR_WHITE), NULL);
-	mvhline(t, MAP_X, ACS_HLINE, 3 * MAP_COLS);
-	mvhline(b, MAP_X, ACS_HLINE, 3 * MAP_COLS);
-	mvvline(MAP_Y, l, ACS_VLINE, MAP_ROWS);
-	mvvline(MAP_Y, r, ACS_VLINE, MAP_ROWS);
+	int t = MapY - 1;
+	int l = MapX - 1;
+	int b = MapY + MapRows;
+	int r = MapX + 3 * MapCols;
+	color_set(colorPair(ColorWhite), NULL);
+	mvhline(t, MapX, ACS_HLINE, 3 * MapCols);
+	mvhline(b, MapX, ACS_HLINE, 3 * MapCols);
+	mvvline(MapY, l, ACS_VLINE, MapRows);
+	mvvline(MapY, r, ACS_VLINE, MapRows);
 	mvaddch(t, l, ACS_ULCORNER);
 	mvaddch(t, r, ACS_URCORNER);
 	mvaddch(b, l, ACS_LLCORNER);
@@ -192,14 +192,14 @@ static void serverMap(void) {
 	if (0 == map.max.modifyCount) return;
 	if (0 == map.now - map.min.createTime) return;
 
-	for (uint8_t y = 0; y < MAP_ROWS; ++y) {
-		for (uint8_t x = 0; x < MAP_COLS; ++x) {
+	for (uint8_t y = 0; y < MapRows; ++y) {
+		for (uint8_t x = 0; x < MapCols; ++x) {
 			struct Meta meta = map.meta[y][x];
 
 			uint32_t count = 0;
 			if (meta.modifyCount && log2(map.max.modifyCount)) {
 				count = DIV_ROUND(
-					(ARRAY_LEN(MAP_CELLS) - 1) * log2(meta.modifyCount),
+					(ARRAY_LEN(MapCells) - 1) * log2(meta.modifyCount),
 					log2(map.max.modifyCount)
 				);
 			}
@@ -207,16 +207,16 @@ static void serverMap(void) {
 			if (meta.modifyTime) {
 				uint32_t modify = meta.modifyTime - map.min.createTime;
 				time = DIV_ROUND(
-					(ARRAY_LEN(MAP_COLORS) - 1) * modify,
+					(ARRAY_LEN(MapColors) - 1) * modify,
 					map.now - map.min.createTime
 				);
 			}
 
-			wchar_t cell = MAP_CELLS[count];
-			uint8_t color = MAP_COLORS[time];
+			wchar_t cell = MapCells[count];
+			uint8_t color = MapColors[time];
 			wchar_t tile[] = { cell, cell, cell, L'\0' };
 			attr_set(colorAttr(color), colorPair(color), NULL);
-			mvaddwstr(MAP_Y + y, MAP_X + 3 * x, tile);
+			mvaddwstr(MapY + y, MapX + 3 * x, tile);
 		}
 	}
 	attr_set(A_NORMAL, 0, NULL);
@@ -229,11 +229,11 @@ static void readMessage(void) {
 	if ((size_t)size < sizeof(msg)) errx(EX_PROTOCOL, "truncated message");
 
 	switch (msg.type) {
-		break; case SERVER_TILE:   serverTile();
-		break; case SERVER_MOVE:   serverMove(msg);
-		break; case SERVER_PUT:    serverPut(msg);
-		break; case SERVER_CURSOR: serverCursor(msg);
-		break; case SERVER_MAP:    serverMap();
+		break; case ServerTile:   serverTile();
+		break; case ServerMove:   serverMove(msg);
+		break; case ServerPut:    serverPut(msg);
+		break; case ServerCursor: serverCursor(msg);
+		break; case ServerMap:    serverMap();
 		break; default: errx(EX_PROTOCOL, "unknown message type %d", msg.type);
 	}
 	move(cellY, cellX);
@@ -246,46 +246,46 @@ static void clientMessage(struct ClientMessage msg) {
 
 static void clientMove(int8_t dx, int8_t dy) {
 	struct ClientMessage msg = {
-		.type = CLIENT_MOVE,
+		.type = ClientMove,
 		.move = { .dx = dx, .dy = dy },
 	};
 	clientMessage(msg);
 }
 
 static void clientFlip(void) {
-	struct ClientMessage msg = { .type = CLIENT_FLIP };
+	struct ClientMessage msg = { .type = ClientFlip };
 	clientMessage(msg);
 }
 
 static void clientPut(uint8_t color, uint8_t cell) {
 	struct ClientMessage msg = {
-		.type = CLIENT_PUT,
+		.type = ClientPut,
 		.put = { .color = color, .cell = cell },
 	};
 	clientMessage(msg);
 }
 
 static void clientMap(void) {
-	struct ClientMessage msg = { .type = CLIENT_MAP };
+	struct ClientMessage msg = { .type = ClientMap };
 	clientMessage(msg);
 }
 
 static struct {
 	enum {
-		MODE_NORMAL,
-		MODE_HELP,
-		MODE_MAP,
-		MODE_DIRECTION,
-		MODE_INSERT,
-		MODE_REPLACE,
-		MODE_DRAW,
-		MODE_LINE,
+		ModeNormal,
+		ModeHelp,
+		ModeMap,
+		ModeDirection,
+		ModeInsert,
+		ModeReplace,
+		ModeDraw,
+		ModeLine,
 	} mode;
 	uint8_t color;
 	uint8_t shift;
 	uint8_t draw;
 } input = {
-	.color = COLOR_WHITE,
+	.color = ColorWhite,
 };
 
 static struct {
@@ -302,36 +302,36 @@ static struct {
 static void modeNormal(void) {
 	curs_set(1);
 	move(cellY, cellX);
-	input.mode = MODE_NORMAL;
+	input.mode = ModeNormal;
 }
 static void modeHelp(void) {
 	curs_set(0);
-	drawTile(HELP);
-	input.mode = MODE_HELP;
+	drawTile(Help);
+	input.mode = ModeHelp;
 }
 static void modeMap(void) {
 	curs_set(0);
 	clientMap();
-	input.mode = MODE_MAP;
+	input.mode = ModeMap;
 }
 static void modeDirection(void) {
-	input.mode = MODE_DIRECTION;
+	input.mode = ModeDirection;
 }
 static void modeInsert(int8_t dx, int8_t dy) {
 	insert.dx = dx;
 	insert.dy = dy;
 	insert.len = 0;
-	input.mode = MODE_INSERT;
+	input.mode = ModeInsert;
 }
 static void modeReplace(void) {
-	input.mode = MODE_REPLACE;
+	input.mode = ModeReplace;
 }
 static void modeDraw(void) {
 	input.draw = 0;
-	input.mode = MODE_DRAW;
+	input.mode = ModeDraw;
 }
 static void modeLine(void) {
-	input.mode = MODE_LINE;
+	input.mode = ModeLine;
 }
 
 static void colorFg(uint8_t fg) {
@@ -353,8 +353,8 @@ static void cellCopy(void) {
 }
 
 static void cellSwap(int8_t dx, int8_t dy) {
-	if ((uint8_t)(cellX + dx) >= CELL_COLS) return;
-	if ((uint8_t)(cellY + dy) >= CELL_ROWS) return;
+	if ((uint8_t)(cellX + dx) >= CellCols) return;
+	if ((uint8_t)(cellY + dy) >= CellRows) return;
 
 	uint8_t aColor = tile.colors[cellY][cellX];
 	uint8_t aCell = tile.cells[cellY][cellX];
@@ -396,7 +396,7 @@ static void inputNormal(bool keyCode, wchar_t ch) {
 	switch (ch) {
 		break; case CTRL('L'): clearok(curscr, true);
 
-		break; case ESC: modeNormal(); input.shift = 0;
+		break; case Esc: modeNormal(); input.shift = 0;
 		break; case 'q': endwin(); exit(EX_OK);
 
 		break; case 'g': clientFlip();
@@ -409,25 +409,25 @@ static void inputNormal(bool keyCode, wchar_t ch) {
 		break; case 'b': clientMove(-1,  1);
 		break; case 'n': clientMove( 1,  1);
 
-		break; case '0': colorFg(COLOR_BLACK);
-		break; case '1': colorFg(COLOR_RED);
-		break; case '2': colorFg(COLOR_GREEN);
-		break; case '3': colorFg(COLOR_YELLOW);
-		break; case '4': colorFg(COLOR_BLUE);
-		break; case '5': colorFg(COLOR_MAGENTA);
-		break; case '6': colorFg(COLOR_CYAN);
-		break; case '7': colorFg(COLOR_WHITE);
-
-		break; case ')': colorBg(COLOR_BLACK);
-		break; case '!': colorBg(COLOR_RED);
-		break; case '@': colorBg(COLOR_GREEN);
-		break; case '#': colorBg(COLOR_YELLOW);
-		break; case '$': colorBg(COLOR_BLUE);
-		break; case '%': colorBg(COLOR_MAGENTA);
-		break; case '^': colorBg(COLOR_CYAN);
-		break; case '&': colorBg(COLOR_WHITE);
-
-		break; case '8': input.color ^= COLOR_BRIGHT;
+		break; case '0': colorFg(ColorBlack);
+		break; case '1': colorFg(ColorRed);
+		break; case '2': colorFg(ColorGreen);
+		break; case '3': colorFg(ColorYellow);
+		break; case '4': colorFg(ColorBlue);
+		break; case '5': colorFg(ColorMagenta);
+		break; case '6': colorFg(ColorCyan);
+		break; case '7': colorFg(ColorWhite);
+
+		break; case ')': colorBg(ColorBlack);
+		break; case '!': colorBg(ColorRed);
+		break; case '@': colorBg(ColorGreen);
+		break; case '#': colorBg(ColorYellow);
+		break; case '$': colorBg(ColorBlue);
+		break; case '%': colorBg(ColorMagenta);
+		break; case '^': colorBg(ColorCyan);
+		break; case '&': colorBg(ColorWhite);
+
+		break; case '8': input.color ^= ColorBright;
 		break; case '9': input.color = colorInvert(input.color);
 		break; case '`': input.color = tile.colors[cellY][cellX];
 
@@ -451,7 +451,7 @@ static void inputNormal(bool keyCode, wchar_t ch) {
 		}
 		break; case '*': {
 			clientPut(
-				tile.colors[cellY][cellX] ^ COLOR_BRIGHT,
+				tile.colors[cellY][cellX] ^ ColorBright,
 				tile.cells[cellY][cellX]
 			);
 			clientMove(1, 0);
@@ -499,7 +499,7 @@ static void inputMap(bool keyCode, wchar_t ch) {
 static void inputDirection(bool keyCode, wchar_t ch) {
 	if (keyCode) return;
 	switch (ch) {
-		break; case ESC: modeNormal();
+		break; case Esc: modeNormal();
 		break; case 'h': modeInsert(-1,  0);
 		break; case 'l': modeInsert( 1,  0);
 		break; case 'k': modeInsert( 0, -1);
@@ -517,11 +517,11 @@ static void inputInsert(bool keyCode, wchar_t ch) {
 		return;
 	}
 	switch (ch) {
-		break; case ESC: {
+		break; case Esc: {
 			clientMove(-insert.dx, -insert.dy);
 			modeNormal();
 		}
-		break; case '\b': case DEL: {
+		break; case '\b': case Del: {
 			clientMove(-insert.dx, -insert.dy);
 			clientPut(input.color, ' ');
 			insert.len--;
@@ -546,7 +546,7 @@ static void inputReplace(bool keyCode, wchar_t ch) {
 		inputNormal(keyCode, ch);
 		return;
 	}
-	if (ch != ESC) {
+	if (ch != Esc) {
 		uint8_t cell = inputCell(ch);
 		if (!cell) return;
 		clientPut(tile.colors[cellY][cellX], cell);
@@ -555,7 +555,7 @@ static void inputReplace(bool keyCode, wchar_t ch) {
 }
 
 static void inputDraw(bool keyCode, wchar_t ch) {
-	if (!keyCode && ch == ESC) {
+	if (!keyCode && ch == Esc) {
 		modeNormal();
 		return;
 	}
@@ -633,7 +633,7 @@ static void inputLine(bool keyCode, wchar_t ch) {
 		}
 	} else {
 		switch (ch) {
-			break; case ESC: case '.': modeNormal(); return;
+			break; case Esc: case '.': modeNormal(); return;
 			break; case 'h': dx = -1;
 			break; case 'l': dx =  1;
 			break; case 'k': dy = -1;
@@ -641,8 +641,8 @@ static void inputLine(bool keyCode, wchar_t ch) {
 			break; default: return;
 		}
 	}
-	if ((uint8_t)(cellX + dx) >= CELL_COLS) return;
-	if ((uint8_t)(cellY + dy) >= CELL_ROWS) return;
+	if ((uint8_t)(cellX + dx) >= CellCols) return;
+	if ((uint8_t)(cellY + dy) >= CellRows) return;
 
 	uint8_t leave = lineCell(tile.cells[cellY][cellX], dx, dy);
 	uint8_t enter = lineCell(tile.cells[cellY + dy][cellX + dx], -dx, -dy);
@@ -656,14 +656,14 @@ static void readInput(void) {
 	wint_t ch;
 	bool keyCode = (KEY_CODE_YES == get_wch(&ch));
 	switch (input.mode) {
-		break; case MODE_NORMAL:    inputNormal(keyCode, ch);
-		break; case MODE_HELP:      inputHelp(keyCode, ch);
-		break; case MODE_MAP:       inputMap(keyCode, ch);
-		break; case MODE_DIRECTION: inputDirection(keyCode, ch);
-		break; case MODE_INSERT:    inputInsert(keyCode, ch);
-		break; case MODE_REPLACE:   inputReplace(keyCode, ch);
-		break; case MODE_DRAW:      inputDraw(keyCode, ch);
-		break; case MODE_LINE:      inputLine(keyCode, ch);
+		break; case ModeNormal:    inputNormal(keyCode, ch);
+		break; case ModeHelp:      inputHelp(keyCode, ch);
+		break; case ModeMap:       inputMap(keyCode, ch);
+		break; case ModeDirection: inputDirection(keyCode, ch);
+		break; case ModeInsert:    inputInsert(keyCode, ch);
+		break; case ModeReplace:   inputReplace(keyCode, ch);
+		break; case ModeDraw:      inputDraw(keyCode, ch);
+		break; case ModeLine:      inputLine(keyCode, ch);
 	}
 }
 
@@ -671,7 +671,7 @@ int main(int argc, char *argv[]) {
 	int opt;
 	while (0 < (opt = getopt(argc, argv, "h"))) {
 		if (opt == 'h') {
-			fwrite(HELP_DATA, sizeof(HELP_DATA), 1, stdout);
+			fwrite(HelpData, sizeof(HelpData), 1, stdout);
 			return EX_OK;
 		} else {
 			return EX_USAGE;
diff --git a/help.h b/help.h
index 8c092ed..1858af0 100644
--- a/help.h
+++ b/help.h
@@ -1,4 +1,4 @@
-static const uint8_t HELP_DATA[] = {
+static const uint8_t HelpData[] = {
 	0xda, 0xc4, 0xc4, 0xc4, 0xc4, 0xc4, 0xc4, 0xc4, 0xc4, 0xc4, 0xc4,
 	0xc4, 0xc4, 0xc4, 0xc4, 0xc4, 0xc4, 0xc4, 0xc4, 0xc4, 0xc4, 0xc4,
 	0xc4, 0xc4, 0xc4, 0xc4, 0xc4, 0xc4, 0xc4, 0xc4, 0xc4, 0xc4, 0xc4,
@@ -373,4 +373,4 @@ static const uint8_t HELP_DATA[] = {
 	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 	0x00, 0x00, 0x00, 0x00
 };
-static const struct Tile *HELP = (const struct Tile *)HELP_DATA;
+static const struct Tile *Help = (const struct Tile *)HelpData;
diff --git a/merge.c b/merge.c
index 22b0eac..ce5dbef 100644
--- a/merge.c
+++ b/merge.c
@@ -43,12 +43,12 @@ static void curse(void) {
 		}
 	}
 
-	color_set(COLOR_WHITE, NULL);
-	mvhline(CELL_ROWS, 0, 0, CELL_COLS);
-	mvhline(CELL_ROWS * 2 + 1, 0, 0, CELL_COLS);
-	mvvline(0, CELL_COLS, 0, CELL_ROWS * 2 + 1);
-	mvaddch(CELL_ROWS, CELL_COLS, ACS_RTEE);
-	mvaddch(CELL_ROWS * 2 + 1, CELL_COLS, ACS_LRCORNER);
+	color_set(ColorWhite, NULL);
+	mvhline(CellRows, 0, 0, CellCols);
+	mvhline(CellRows * 2 + 1, 0, 0, CellCols);
+	mvvline(0, CellCols, 0, CellRows * 2 + 1);
+	mvaddch(CellRows, CellCols, ACS_RTEE);
+	mvaddch(CellRows * 2 + 1, CellCols, ACS_LRCORNER);
 	color_set(0, NULL);
 
 	cbreak();
@@ -59,7 +59,7 @@ static void curse(void) {
 
 static attr_t colorAttr(uint8_t color) {
 	if (COLORS >= 16) return A_NORMAL;
-	return (color & COLOR_BRIGHT) ? A_BOLD : A_NORMAL;
+	return (color & ColorBright) ? A_BOLD : A_NORMAL;
 }
 static short colorPair(uint8_t color) {
 	if (COLORS >= 16) return color;
@@ -67,8 +67,8 @@ static short colorPair(uint8_t color) {
 }
 
 static void drawTile(int offsetY, const struct Tile *tile) {
-	for (uint8_t cellY = 0; cellY < CELL_ROWS; ++cellY) {
-		for (uint8_t cellX = 0; cellX < CELL_COLS; ++cellX) {
+	for (uint8_t cellY = 0; cellY < CellRows; ++cellY) {
+		for (uint8_t cellX = 0; cellX < CellCols; ++cellX) {
 			uint8_t color = tile->colors[cellY][cellX];
 			uint8_t cell = tile->cells[cellY][cellX];
 
@@ -111,8 +111,8 @@ int main(int argc, char *argv[]) {
 
 		if (tileA.meta.modifyTime != tileB.meta.modifyTime) {
 			drawTile(0, &tileA);
-			drawTile(CELL_ROWS + 1, &tileB);
-			move(CELL_ROWS * 2 + 2, 0);
+			drawTile(CellRows + 1, &tileB);
+			move(CellRows * 2 + 2, 0);
 			refresh();
 
 			int c;
diff --git a/meta.c b/meta.c
index 990928a..ff80bd1 100644
--- a/meta.c
+++ b/meta.c
@@ -30,8 +30,8 @@ int main() {
 
 		printf(
 			"%d,%d,%jd,%u,%jd,%u,%jd\n",
-			i % TILE_COLS,
-			i / TILE_COLS,
+			i % TileCols,
+			i / TileCols,
 			tile.meta.createTime,
 			tile.meta.modifyCount,
 			tile.meta.modifyTime,
diff --git a/server.c b/server.c
index b8cf76a..c48f0b8 100644
--- a/server.c
+++ b/server.c
@@ -41,26 +41,26 @@ static void tilesMap(void) {
 	int fd = open("torus.dat", O_CREAT | O_RDWR, 0644);
 	if (fd < 0) err(EX_CANTCREAT, "torus.dat");
 
-	int error = ftruncate(fd, TILES_SIZE);
+	int error = ftruncate(fd, TilesSize);
 	if (error) err(EX_IOERR, "ftruncate");
 
-	tiles = mmap(NULL, TILES_SIZE, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
+	tiles = mmap(NULL, TilesSize, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
 	if (tiles == MAP_FAILED) err(EX_OSERR, "mmap");
 
-	error = madvise(tiles, TILES_SIZE, MADV_RANDOM);
+	error = madvise(tiles, TilesSize, MADV_RANDOM);
 	if (error) err(EX_OSERR, "madvise");
 
 #ifdef MADV_NOCORE
-	error = madvise(tiles, TILES_SIZE, MADV_NOCORE);
+	error = madvise(tiles, TilesSize, MADV_NOCORE);
 	if (error) err(EX_OSERR, "madvise");
 #endif
 }
 
 static struct Tile *tileGet(uint32_t tileX, uint32_t tileY) {
-	struct Tile *tile = &tiles[tileY * TILE_ROWS + tileX];
+	struct Tile *tile = &tiles[tileY * TileRows + tileX];
 	if (!tile->meta.createTime) {
-		memset(tile->cells, ' ', CELLS_SIZE);
-		memset(tile->colors, COLOR_WHITE, CELLS_SIZE);
+		memset(tile->cells, ' ', CellsSize);
+		memset(tile->colors, ColorWhite, CellsSize);
 		tile->meta.createTime = time(NULL);
 	}
 	return tile;
@@ -97,10 +97,10 @@ static struct Client *clientAdd(int fd) {
 	if (!client) err(EX_OSERR, "malloc");
 
 	client->fd = fd;
-	client->tileX = TILE_INIT_X;
-	client->tileY = TILE_INIT_Y;
-	client->cellX = CELL_INIT_X;
-	client->cellY = CELL_INIT_Y;
+	client->tileX = TileInitX;
+	client->tileY = TileInitY;
+	client->cellX = CellInitX;
+	client->cellY = CellInitY;
 
 	client->prev = NULL;
 	if (clientHead) {
@@ -118,7 +118,7 @@ static bool clientSend(const struct Client *client, struct ServerMessage msg) {
 	ssize_t size = send(client->fd, &msg, sizeof(msg), 0);
 	if (size < 0) return false;
 
-	if (msg.type == SERVER_TILE) {
+	if (msg.type == ServerTile) {
 		struct Tile *tile = tileAccess(client->tileX, client->tileY);
 		size = send(client->fd, tile, sizeof(*tile), 0);
 		if (size < 0) return false;
@@ -142,10 +142,10 @@ static void clientRemove(struct Client *client) {
 	if (clientHead == client) clientHead = client->next;
 
 	struct ServerMessage msg = {
-		.type = SERVER_CURSOR,
+		.type = ServerCursor,
 		.cursor = {
 			.oldCellX = client->cellX, .oldCellY = client->cellY,
-			.newCellX = CURSOR_NONE,   .newCellY = CURSOR_NONE,
+			.newCellX = CursorNone,    .newCellY = CursorNone,
 		},
 	};
 	clientCast(client, msg);
@@ -156,8 +156,8 @@ static void clientRemove(struct Client *client) {
 
 static bool clientCursors(const struct Client *client) {
 	struct ServerMessage msg = {
-		.type = SERVER_CURSOR,
-		.cursor = { .oldCellX = CURSOR_NONE, .oldCellY = CURSOR_NONE },
+		.type = ServerCursor,
+		.cursor = { .oldCellX = CursorNone, .oldCellY = CursorNone },
 	};
 
 	for (struct Client *friend = clientHead; friend; friend = friend->next) {
@@ -174,30 +174,30 @@ static bool clientCursors(const struct Client *client) {
 
 static bool clientUpdate(struct Client *client, const struct Client *old) {
 	struct ServerMessage msg = {
-		.type = SERVER_MOVE,
+		.type = ServerMove,
 		.move = { .cellX = client->cellX, .cellY = client->cellY },
 	};
 	if (!clientSend(client, msg)) return false;
 
 	if (client->tileX != old->tileX || client->tileY != old->tileY) {
-		msg.type = SERVER_TILE;
+		msg.type = ServerTile;
 		if (!clientSend(client, msg)) return false;
 
 		if (!clientCursors(client)) return false;
 
 		msg = (struct ServerMessage) {
-			.type = SERVER_CURSOR,
+			.type = ServerCursor,
 			.cursor = {
-				.oldCellX = old->cellX,  .oldCellY = old->cellY,
-				.newCellX = CURSOR_NONE, .newCellY = CURSOR_NONE,
+				.oldCellX = old->cellX, .oldCellY = old->cellY,
+				.newCellX = CursorNone, .newCellY = CursorNone,
 			},
 		};
 		clientCast(old, msg);
 
 		msg = (struct ServerMessage) {
-			.type = SERVER_CURSOR,
+			.type = ServerCursor,
 			.cursor = {
-				.oldCellX = CURSOR_NONE,   .oldCellY = CURSOR_NONE,
+				.oldCellX = CursorNone,    .oldCellY = CursorNone,
 				.newCellX = client->cellX, .newCellY = client->cellY,
 			},
 		};
@@ -205,7 +205,7 @@ static bool clientUpdate(struct Client *client, const struct Client *old) {
 
 	} else {
 		msg = (struct ServerMessage) {
-			.type = SERVER_CURSOR,
+			.type = ServerCursor,
 			.cursor = {
 				.oldCellX = old->cellX,    .oldCellY = old->cellY,
 				.newCellX = client->cellX, .newCellY = client->cellY,
@@ -220,48 +220,48 @@ static bool clientUpdate(struct Client *client, const struct Client *old) {
 static bool clientMove(struct Client *client, int8_t dx, int8_t dy) {
 	struct Client old = *client;
 
-	if (dx > CELL_COLS - client->cellX) dx = CELL_COLS - client->cellX;
-	if (dx < -client->cellX - 1)        dx = -client->cellX - 1;
-	if (dy > CELL_ROWS - client->cellY) dy = CELL_ROWS - client->cellY;
-	if (dy < -client->cellY - 1)        dy = -client->cellY - 1;
+	if (dx > CellCols - client->cellX) dx = CellCols - client->cellX;
+	if (dx < -client->cellX - 1)       dx = -client->cellX - 1;
+	if (dy > CellRows - client->cellY) dy = CellRows - client->cellY;
+	if (dy < -client->cellY - 1)       dy = -client->cellY - 1;
 
 	client->cellX += dx;
 	client->cellY += dy;
 
-	if (client->cellX == CELL_COLS) {
+	if (client->cellX == CellCols) {
 		client->tileX++;
 		client->cellX = 0;
 	}
 	if (client->cellX == UINT8_MAX) {
 		client->tileX--;
-		client->cellX = CELL_COLS - 1;
+		client->cellX = CellCols - 1;
 	}
-	if (client->cellY == CELL_ROWS) {
+	if (client->cellY == CellRows) {
 		client->tileY++;
 		client->cellY = 0;
 	}
 	if (client->cellY == UINT8_MAX) {
 		client->tileY--;
-		client->cellY = CELL_ROWS - 1;
+		client->cellY = CellRows - 1;
 	}
 
-	if (client->tileX == TILE_COLS)  client->tileX = 0;
-	if (client->tileX == UINT32_MAX) client->tileX = TILE_COLS - 1;
-	if (client->tileY == TILE_ROWS)  client->tileY = 0;
-	if (client->tileY == UINT32_MAX) client->tileY = TILE_ROWS - 1;
+	if (client->tileX == TileCols)  client->tileX = 0;
+	if (client->tileX == UINT32_MAX) client->tileX = TileCols - 1;
+	if (client->tileY == TileRows)  client->tileY = 0;
+	if (client->tileY == UINT32_MAX) client->tileY = TileRows - 1;
 
-	assert(client->cellX < CELL_COLS);
-	assert(client->cellY < CELL_ROWS);
-	assert(client->tileX < TILE_COLS);
-	assert(client->tileY < TILE_ROWS);
+	assert(client->cellX < CellCols);
+	assert(client->cellY < CellRows);
+	assert(client->tileX < TileCols);
+	assert(client->tileY < TileRows);
 
 	return clientUpdate(client, &old);
 }
 
 static bool clientFlip(struct Client *client) {
 	struct Client old = *client;
-	client->tileX = (client->tileX + TILE_COLS / 2) % TILE_COLS;
-	client->tileY = (client->tileY + TILE_ROWS / 2) % TILE_ROWS;
+	client->tileX = (client->tileX + TileCols / 2) % TileCols;
+	client->tileY = (client->tileY + TileRows / 2) % TileRows;
 	return clientUpdate(client, &old);
 }
 
@@ -271,7 +271,7 @@ static bool clientPut(const struct Client *client, uint8_t color, uint8_t cell)
 	tile->cells[client->cellY][client->cellX] = cell;
 
 	struct ServerMessage msg = {
-		.type = SERVER_PUT,
+		.type = ServerPut,
 		.put = {
 			.cellX = client->cellX,
 			.cellY = client->cellY,
@@ -285,8 +285,8 @@ static bool clientPut(const struct Client *client, uint8_t color, uint8_t cell)
 }
 
 static bool clientMap(const struct Client *client) {
-	int32_t mapY = (int32_t)client->tileY - MAP_ROWS / 2;
-	int32_t mapX = (int32_t)client->tileX - MAP_COLS / 2;
+	int32_t mapY = (int32_t)client->tileY - MapRows / 2;
+	int32_t mapX = (int32_t)client->tileX - MapCols / 2;
 
 	time_t now = time(NULL);
 	struct Map map = {
@@ -300,11 +300,11 @@ static bool clientMap(const struct Client *client) {
 		},
 	};
 
-	for (int32_t y = 0; y < MAP_ROWS; ++y) {
-		for (int32_t x = 0; x < MAP_COLS; ++x) {
-			uint32_t tileY = ((mapY + y) % TILE_ROWS + TILE_ROWS) % TILE_ROWS;
-			uint32_t tileX = ((mapX + x) % TILE_COLS + TILE_COLS) % TILE_COLS;
-			struct Meta meta = tiles[tileY * TILE_ROWS + tileX].meta;
+	for (int32_t y = 0; y < MapRows; ++y) {
+		for (int32_t x = 0; x < MapCols; ++x) {
+			uint32_t tileY = ((mapY + y) % TileRows + TileRows) % TileRows;
+			uint32_t tileX = ((mapX + x) % TileCols + TileCols) % TileCols;
+			struct Meta meta = tiles[tileY * TileRows + tileX].meta;
 
 			if (meta.createTime) {
 				if (meta.createTime < map.min.createTime) {
@@ -347,7 +347,7 @@ static bool clientMap(const struct Client *client) {
 		}
 	}
 
-	struct ServerMessage msg = { .type = SERVER_MAP };
+	struct ServerMessage msg = { .type = ServerMap };
 	if (!clientSend(client, msg)) return false;
 	if (0 > send(client->fd, &map, sizeof(map), 0)) return false;
 	return true;
@@ -405,7 +405,7 @@ int main() {
 			nevents = kevent(kq, &event, 1, NULL, 0, NULL);
 			if (nevents < 0) err(EX_IOERR, "kevent");
 
-			struct ServerMessage msg = { .type = SERVER_TILE };
+			struct ServerMessage msg = { .type = ServerTile };
 			bool success = clientSend(client, msg)
 				&& clientMove(client, 0, 0)
 				&& clientCursors(client);
@@ -429,16 +429,16 @@ int main() {
 
 		bool success = false;
 		switch (msg.type) {
-			break; case CLIENT_MOVE: {
+			break; case ClientMove: {
 				success = clientMove(client, msg.move.dx, msg.move.dy);
 			}
-			break; case CLIENT_FLIP: {
+			break; case ClientFlip: {
 				success = clientFlip(client);
 			}
-			break; case CLIENT_PUT: {
+			break; case ClientPut: {
 				success = clientPut(client, msg.put.color, msg.put.cell);
 			}
-			break; case CLIENT_MAP: {
+			break; case ClientMap: {
 				success = clientMap(client);
 			}
 		}
diff --git a/torus.h b/torus.h
index 3b4d133..41c662b 100644
--- a/torus.h
+++ b/torus.h
@@ -25,25 +25,16 @@
 
 #define ARRAY_LEN(a) (sizeof(a) / sizeof((a)[0]))
 
-#undef COLOR_BLACK
-#undef COLOR_RED
-#undef COLOR_GREEN
-#undef COLOR_YELLOW
-#undef COLOR_BLUE
-#undef COLOR_MAGENTA
-#undef COLOR_CYAN
-#undef COLOR_WHITE
-
 enum {
-	COLOR_BLACK,
-	COLOR_RED,
-	COLOR_GREEN,
-	COLOR_YELLOW,
-	COLOR_BLUE,
-	COLOR_MAGENTA,
-	COLOR_CYAN,
-	COLOR_WHITE,
-	COLOR_BRIGHT,
+	ColorBlack,
+	ColorRed,
+	ColorGreen,
+	ColorYellow,
+	ColorBlue,
+	ColorMagenta,
+	ColorCyan,
+	ColorWhite,
+	ColorBright,
 };
 
 static const wchar_t CP437[256] = (
@@ -66,13 +57,13 @@ static const wchar_t CP437[256] = (
 );
 
 enum {
-	CELL_ROWS = 24,
-	CELL_COLS = 80,
+	CellRows = 24,
+	CellCols = 80,
 };
-static const size_t CELLS_SIZE = sizeof(uint8_t[CELL_ROWS][CELL_COLS]);
+static const size_t CellsSize = sizeof(uint8_t[CellRows][CellCols]);
 
-static const uint8_t CELL_INIT_X = CELL_COLS / 2;
-static const uint8_t CELL_INIT_Y = CELL_ROWS / 2;
+static const uint8_t CellInitX = CellCols / 2;
+static const uint8_t CellInitY = CellRows / 2;
 
 struct Meta {
 	time_t createTime;
@@ -83,40 +74,40 @@ struct Meta {
 };
 
 struct Tile {
-	alignas(4096) uint8_t cells[CELL_ROWS][CELL_COLS];
-	uint8_t colors[CELL_ROWS][CELL_COLS];
+	alignas(4096) uint8_t cells[CellRows][CellCols];
+	uint8_t colors[CellRows][CellCols];
 	struct Meta meta;
 };
 static_assert(4096 == sizeof(struct Tile), "struct Tile is page-sized");
 
 enum {
-	TILE_ROWS = 64,
-	TILE_COLS = 64,
+	TileRows = 64,
+	TileCols = 64,
 };
-static const size_t TILES_SIZE = sizeof(struct Tile[TILE_ROWS][TILE_COLS]);
+static const size_t TilesSize = sizeof(struct Tile[TileRows][TileCols]);
 
-static const uint32_t TILE_INIT_X = TILE_COLS / 2;
-static const uint32_t TILE_INIT_Y = TILE_ROWS / 2;
+static const uint32_t TileInitX = TileCols / 2;
+static const uint32_t TileInitY = TileRows / 2;
 
 enum {
-	MAP_ROWS = 7,
-	MAP_COLS = 7,
+	MapRows = 7,
+	MapCols = 7,
 };
 
 struct Map {
 	time_t now;
 	struct Meta min;
 	struct Meta max;
-	struct Meta meta[MAP_ROWS][MAP_COLS];
+	struct Meta meta[MapRows][MapCols];
 };
 
 struct ServerMessage {
 	enum {
-		SERVER_TILE,
-		SERVER_MOVE,
-		SERVER_PUT,
-		SERVER_CURSOR,
-		SERVER_MAP,
+		ServerTile,
+		ServerMove,
+		ServerPut,
+		ServerCursor,
+		ServerMap,
 	} type;
 	union {
 		struct {
@@ -138,14 +129,14 @@ struct ServerMessage {
 	};
 };
 
-static const uint8_t CURSOR_NONE = UINT8_MAX;
+static const uint8_t CursorNone = UINT8_MAX;
 
 struct ClientMessage {
 	enum {
-		CLIENT_MOVE,
-		CLIENT_FLIP,
-		CLIENT_PUT,
-		CLIENT_MAP,
+		ClientMove,
+		ClientFlip,
+		ClientPut,
+		ClientMap,
 	} type;
 	union {
 		struct {