// Compilation command: // - release: gcc task_tracker.c -Wall -O2 -m64 -lncurses -o task_tracker.x64 // - debug : gcc task_tracker.c -Wall -g3 -m64 -lncurses -o task_tracker.x64 #include #include #include #include #include #include #include #include #define STR_(X) #X // Convert to string. #define STR(X) STR_(X) // Force argument expansions before converting to string. #define MAX_TASK_NAME 127 #define FIRST_DAY_OF_WEEK 1 // (0-6, Sunday = 0) #define LOG_FILE_NAME "log.txt" #define DB_BIN_PATH_NAME "./database.bin" #define DB_CSV_PATH_NAME "./database.csv" typedef struct { char name[MAX_TASK_NAME+1]; // Allow space for null termination char. uint32_t time[7]; uint8_t state; uint32_t hash; // TODO Is this an overkill? Maybe decouple from task_t? } task_t; const char* DB_BIN_FILE_SIGNATURE = "TTBF:1.0"; const uint8_t DB_BIN_FILE_SIGNATURE_SIZE = sizeof(DB_BIN_FILE_SIGNATURE); const size_t SIZEOF_TASK_T = sizeof(task_t); const char* DAYS_OF_WEEK[] = { "sun", "mon", "tue", "wed", "thu", "fri", "sat" }; const uint8_t DAYS_ON_WEEK = sizeof(DAYS_OF_WEEK)/sizeof(char*); task_t* tasks = NULL; uint32_t tasks_count = 0; uint32_t tasks_capacity = 0; uint32_t selected_task = -1; char* replace_char(char* string, char find, char replace){ char *idx = string; while((idx = strchr(idx, find)) != NULL) { *idx = replace; *idx++; } return string; } uint32_t CRC32(const uint8_t data[], size_t data_length) { static const uint32_t crc32_table[] = { 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f, 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9, 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d }; uint32_t crc32 = 0xFFFFFFFFu; for (size_t i = 0; i < data_length; i++) { const uint32_t lookupIndex = (crc32 ^ data[i]) & 0xff; crc32 = (crc32 >> 8) ^ crc32_table[lookupIndex]; } // Finalize the CRC-32 value by inverting all the bits crc32 ^= 0xFFFFFFFFu; return crc32; } uint32_t hash_string(const char* string) { size_t data_length = strlen(string); uint8_t* data = (uint8_t*)string; return CRC32(data, data_length); } void print_task(const task_t* task) { printf("name: '%s'\n", task->name); printf("hash: '%" PRIu32 "'\n", task->hash); printf("t[0]: '%" PRIu32 "'\n", task->time[0]); printf("t[1]: '%" PRIu32 "'\n", task->time[1]); printf("t[2]: '%" PRIu32 "'\n", task->time[2]); printf("t[3]: '%" PRIu32 "'\n", task->time[3]); printf("t[4]: '%" PRIu32 "'\n", task->time[4]); printf("t[5]: '%" PRIu32 "'\n", task->time[5]); printf("t[6]: '%" PRIu32 "'\n", task->time[6]); } void store_database(const task_t* database, uint32_t number_of_entries, const char* path_name) { assert(database != NULL); assert(path_name != NULL); // Open file. FILE* file = fopen(path_name, "w"); if (file == NULL) { fprintf(stderr, "Failed to open database file: %s.\n", strerror(errno)); // TODO Fix message. return; } fwrite(DB_BIN_FILE_SIGNATURE, sizeof(char), DB_BIN_FILE_SIGNATURE_SIZE, file); fwrite(&number_of_entries, sizeof(number_of_entries), 1, file); fwrite(database, SIZEOF_TASK_T, number_of_entries, file); fclose(file); } uint32_t load_database(task_t** database, const char* path_name) { assert(database != NULL); assert(path_name != NULL); // Open file. FILE* file = fopen(path_name, "r"); if (file == NULL) { fprintf(stderr, "Failed to open database file '%s': %s.\n", path_name, strerror(errno)); // TODO Fix message. return 0; } // Validate file signature. char file_signature[DB_BIN_FILE_SIGNATURE_SIZE]; fread(&file_signature, sizeof(char), DB_BIN_FILE_SIGNATURE_SIZE, file); if (strncmp(file_signature, DB_BIN_FILE_SIGNATURE, DB_BIN_FILE_SIGNATURE_SIZE) != 0) { fprintf(stderr, "Invalid file signature.\n"); return 0; } // Read number of entries. uint32_t number_of_entries; fread(&number_of_entries, sizeof(number_of_entries), 1, file); // Read database entries. *database = calloc(number_of_entries, SIZEOF_TASK_T); fread(*database, SIZEOF_TASK_T, number_of_entries, file); // Make sure we are reading all the file. assert(fgetc(file) == EOF); fclose(file); return number_of_entries; } void export_database(const task_t* database, uint32_t number_of_entries, const char* path_name) { assert(database != NULL); assert(path_name != NULL); FILE* file = fopen(path_name, "w"); if (file == NULL) { fprintf(stderr, "Failed to open database file '%s': %s.\n", path_name, strerror(errno)); // TODO Fix message. return; } fprintf(file, "%s,%s,%s,%s,%s,%s,%s,%s\n", "task", DAYS_OF_WEEK[0], DAYS_OF_WEEK[1], DAYS_OF_WEEK[2], DAYS_OF_WEEK[3], DAYS_OF_WEEK[4], DAYS_OF_WEEK[5], DAYS_OF_WEEK[6] ); for (uint32_t idx = 0; idx < number_of_entries; idx++) { const task_t* task = &database[idx]; fprintf(file, "%s,%" PRIu32 ",%" PRIu32 ",%" PRIu32 ",%" PRIu32 ",%" PRIu32 ",%" PRIu32 ",%" PRIu32 "\n", task->name, task->time[0], task->time[1], task->time[2], task->time[3], task->time[4], task->time[5], task->time[6] ); } fclose(file); } uint32_t import_database(task_t** database, const char* path_name) { assert(database != NULL); assert(path_name != NULL); FILE* file = fopen(path_name, "r"); if (file == NULL) { fprintf(stderr, "Failed to open database file '%s': %s.\n", path_name, strerror(errno)); // TODO Fix message. return 0; } uint32_t number_of_entries = 0; uint32_t capacity = 0; task_t task; int error; fscanf(file, "%*[^\n]\n"); // Skip header line. scan_csv: { error = fscanf(file, "%" STR(MAX_TASK_NAME) "[^,],%" SCNu32 ",%" SCNu32 ",%" SCNu32 ",%" SCNu32 ",%" SCNu32 ",%" SCNu32 ",%" SCNu32 "\n", task.name, &task.time[0], &task.time[1], &task.time[2], &task.time[3], &task.time[4], &task.time[5], &task.time[6] ); if (error != EOF) { task.hash = hash_string(task.name); number_of_entries++; // Expand tasks capacity if required. if (number_of_entries > capacity) { capacity = capacity == 0 ? 16 : capacity << 1; *database = reallocarray(*database, capacity, SIZEOF_TASK_T); if (errno != 0 || errno == ENOMEM) { ; // TODO reallocarray failed } } memcpy(&((*database)[number_of_entries-1]), &task, SIZEOF_TASK_T); goto scan_csv; } } assert(number_of_entries == 3); *database = reallocarray(*database, number_of_entries, SIZEOF_TASK_T); // TODO check for allocation errors. // if (error != EOF) { // fprintf(stderr, "Failed to parse database file: %s.\n", strerror(errno)); // } fclose(file); return number_of_entries; } void add_task(char* name) { // Exit if task has already been added. uint32_t name_hash = CRC32((uint8_t*)name, sizeof(name)); for (uint32_t idx = 0; idx < tasks_count; idx++) { if (name_hash == tasks[idx].hash && strcmp(name, tasks[idx].name) == 0) { return; } } // Expand tasks capacity if required. if (tasks_count >= tasks_capacity) { tasks_capacity = tasks_capacity == 0 ? 16 : tasks_capacity << 1; tasks = realloc(tasks, SIZEOF_TASK_T * tasks_capacity); } // Add new task entry. task_t* new_task = &tasks[tasks_count]; memset(new_task, '0', SIZEOF_TASK_T); strncpy(new_task->name, name, MAX_TASK_NAME); new_task->name[MAX_TASK_NAME] = '\0'; printf(">>> %s\n", new_task->name); // TODO debug new_task->hash = name_hash; tasks_count++; } void prototype() { const char* done = "# -- done -- -- -- /\n"; /////////////////////////////////////////////////////////////////////////// // Get current UTC time. fprintf(stderr, "# current UTC time --------------------------- \\\n"); time_t x = time(NULL); printf("%s", ctime(&x)); fprintf(stderr, done); /////////////////////////////////////////////////////////////////////////// // Get current day of the week. fprintf(stderr, "# current day of the week --------------------- \\\n"); time_t now_ut = time(NULL); uint8_t week_day = localtime(&now_ut)->tm_wday; fprintf(stderr, "%d\n", week_day); fprintf(stderr, done); /////////////////////////////////////////////////////////////////////////// // Prepare some data for testing. tasks_count = 3; tasks = calloc(tasks_count, SIZEOF_TASK_T); task_t tmp[] = { { .name = "TASK-00 : Sample task name.", .time = { 3,2,1,0,1,2,3 }, .hash = hash_string("TASK-00 : Sample task name.") }, { .name = "TASK-01 : A wild task appears", .time = { 1,2,3,4,5,6,7 }, .hash = hash_string("TASK-01 : A wild task appears") }, { .name = "BAZINGA : Not a task!", .time = { 11,22,33,44,55,66,77 }, .hash = hash_string("BAZINGA : Not a task!") } }; memcpy(tasks, &tmp, SIZEOF_TASK_T * tasks_count); /////////////////////////////////////////////////////////////////////////// // Store database from memory to binary file. fprintf(stderr, "# store database ------------------------------ \\\n"); store_database(tasks, tasks_count, DB_BIN_PATH_NAME); fprintf(stderr, done); /////////////////////////////////////////////////////////////////////////// // Load database from binary file to memory. fprintf(stderr, "# load database ------------------------------- \\\n"); task_t* task_load = NULL; uint32_t number_of_entries_load = load_database(&task_load, DB_BIN_PATH_NAME); fprintf(stderr, "loaded %" PRIu32 " entries.\n", number_of_entries_load); for (uint32_t idx = 0; idx < number_of_entries_load; idx++) { print_task(&task_load[idx]); } free(task_load); fprintf(stderr, done); /////////////////////////////////////////////////////////////////////////// // Export database to CSV file. fprintf(stderr, "# export to CSV ------------------------------- \\\n"); export_database(tasks, tasks_count, DB_CSV_PATH_NAME); fprintf(stderr, done); /////////////////////////////////////////////////////////////////////////// // Import database from CSV file. fprintf(stderr, "# import from CSV ----------------------------- \\\n"); task_t* task_import = NULL; uint32_t number_of_entries_import = import_database(&task_import, DB_CSV_PATH_NAME); fprintf(stderr, "imported %" PRIu32 " entries.\n", number_of_entries_import); for (uint32_t idx = 0; idx < number_of_entries_import; idx++) { print_task(&task_import[idx]); } free(task_import); fprintf(stderr, done); /////////////////////////////////////////////////////////////////////////// // Release memory and exit. // free(tasks); // return; } char* line_buffer; int size_x, size_y; uint8_t selected_layout = 0; #define TABLE_HEADERS_SIZE 9 typedef struct { int table_size; int table_headers_size; char* table_headers[TABLE_HEADERS_SIZE]; } layout_t; layout_t* layouts = NULL; // { // .table_size = 8, // .table_headers_size = 9, // .table_headers = { " Task ", " Mon ", " Tue ", " Wed ", " Thu ", " Fri ", " Sat ", " Sun ", " Total " } // }, // { // .table_size = 6, // .table_headers_size = 9, // .table_headers = { " T ", " M ", " T ", " W ", " T ", " F ", " S ", " S ", " # " } // } // }; void initialize_layouts() { layout_t* layout = NULL; layouts = calloc(2, sizeof(layout_t)); // Layout : 0 : normal. layout = &layouts[0]; layout->table_size = 8; layout->table_headers_size = TABLE_HEADERS_SIZE; layout->table_headers[0] = " Task "; layout->table_headers[1] = " Mon "; layout->table_headers[2] = " Tue "; layout->table_headers[3] = " Wed "; layout->table_headers[4] = " Thu "; layout->table_headers[5] = " Fri "; layout->table_headers[6] = " Sat "; layout->table_headers[7] = " Sun "; layout->table_headers[8] = " Total "; // layout->table_headers = { " Task ", " Mon ", " Tue ", " Wed ", " Thu ", " Fri ", " Sat ", " Sun ", " Total " }; // Layout : 1 : compact. layout = &layouts[1]; layout->table_size = 6; layout->table_headers_size = TABLE_HEADERS_SIZE; layout->table_headers[0] = " Task "; layout->table_headers[1] = " M "; layout->table_headers[2] = " T "; layout->table_headers[3] = " W "; layout->table_headers[4] = " T "; layout->table_headers[5] = " F "; layout->table_headers[6] = " S "; layout->table_headers[7] = " S "; layout->table_headers[8] = " # "; // layout->table_headers = { " T ", " M ", " T ", " W ", " T ", " F ", " S ", " S ", " # " }; } void free_memory() { free(line_buffer); free(tasks); // TODO Deallocate tasks. free(layouts); } void draw_header() { layout_t* layout = &layouts[selected_layout]; int table_size = layout->table_size; char** table_headers = layout->table_headers; mvaddch(0, 0, ACS_ULCORNER); for (int idx = 1; idx < size_x-1; idx++) { addch(ACS_HLINE); } addch(ACS_URCORNER); int start_columns = size_x - 1 - 8*table_size - 2; int columns[] = { 0, start_columns+(table_size*0), start_columns+(table_size*1), start_columns+(table_size*2), start_columns+(table_size*3), start_columns+(table_size*4), start_columns+(table_size*5), start_columns+(table_size*6), start_columns+(table_size*7), }; mvaddstr(0, columns[0]+2, table_headers[0]); for (int idx = 1; idx < 9; idx++) { mvaddch(0, columns[idx], ACS_TTEE); mvaddstr(0, columns[idx]+2, table_headers[idx]); } } void draw_table() { task_t* task; int x, y; layout_t* layout = &layouts[selected_layout]; int table_size = layout->table_size; char** table_headers = layout->table_headers; // TODO Colors start_color(); init_pair(1, COLOR_BLACK, COLOR_CYAN); int start_columns = size_x - 1 - 8*table_size - 2; int columns[] = { 0, start_columns+(table_size*0), start_columns+(table_size*1), start_columns+(table_size*2), start_columns+(table_size*3), start_columns+(table_size*4), start_columns+(table_size*5), start_columns+(table_size*6), start_columns+(table_size*7), size_x-1, }; move(1, 0); for (uint32_t idx = 0; idx < tasks_count; idx++){ task = &tasks[idx]; // Enable highlight color on selected entry. if (idx == selected_task) { attron(COLOR_PAIR(1)); } // Clear line_buffer and add string termination. memset(line_buffer, ' ', size_x * sizeof(char)); line_buffer[size_x-1] = '\0'; // Check maximum available space for task name and print it accordingly. size_t task_name_length = strlen(task->name)*sizeof(char); size_t max_column_length = start_columns - 2; size_t copy_length = task_name_length < max_column_length ? task_name_length : max_column_length; memcpy(line_buffer+2, task->name, copy_length); addstr(line_buffer); // Disable highlight color on selected entry. if (idx == selected_task) { attroff(COLOR_PAIR(1)); } // Print columns separators. getyx(stdscr,y,x); for (int c_idx = 0; c_idx < sizeof(columns)/sizeof(int); c_idx++) { mvaddch(y, columns[c_idx], ACS_VLINE); } // Go to next line. y++; move(y, 0); } } void draw_footer() { const char *app_name = "Task Tracker"; const char *app_version = "v1.0"; int row, col; /* to store the number of rows and the number of colums of the screen */ initscr(); /* start the curses mode */ getmaxyx(stdscr,row,col); /* get the number of rows and columns */ mvaddch(row-1, 0, ACS_LLCORNER); addch(' '); printw(app_name); addch(' '); for (int idx = strlen(app_name) + 3; idx < col - strlen(app_version) - 3; idx ++) { addch(ACS_HLINE); } addch(' '); printw(app_version); addch(' '); addch(ACS_LRCORNER); } WINDOW *create_newwin(int height, int width, int starty, int startx); void destroy_win(WINDOW *local_win); int main(int argc, char *argv[]) { prototype(); // TODO initialize_layouts(); WINDOW *my_win; int startx, starty, width, height; int ch; initscr(); /* Start curses mode */ cbreak(); /* Line buffering disabled, Pass on * everty thing to me */ keypad(stdscr, TRUE); /* I need that nifty F1 */ curs_set(0); // Set cursor invisible. height = 3; width = 10; starty = (LINES - height) / 2; /* Calculating for a center placement */ startx = (COLS - width) / 2; /* of the window */ printw("Press F1 to exit"); refresh(); my_win = create_newwin(height, width, starty, startx); int rows; int colums; ch = KEY_RESIZE; do { switch(ch) { case KEY_RESIZE: erase(); if (line_buffer != NULL) { free(line_buffer); } getmaxyx(stdscr, size_y, size_x); line_buffer = malloc(size_x * sizeof(char)); break; case KEY_LEFT: destroy_win(my_win); my_win = create_newwin(height, width, starty,--startx); break; case KEY_RIGHT: destroy_win(my_win); my_win = create_newwin(height, width, starty,++startx); break; case KEY_UP: selected_task = selected_task == 0 ? 0 : selected_task - 1; destroy_win(my_win); my_win = create_newwin(height, width, --starty,startx); break; case KEY_DOWN: selected_task = (selected_task+1) == tasks_count ? selected_task : selected_task + 1; destroy_win(my_win); my_win = create_newwin(height, width, ++starty,startx); break; } selected_layout = size_x > 100 ? 0 : 1; if (size_x >= 60 && size_y > 2) { draw_header(); draw_table(); draw_footer(); } else { const char* INVALID_WINDOW_MESSAGE = "Please expand window."; mvaddstr(size_y / 2, (size_x - strlen(INVALID_WINDOW_MESSAGE)) / 2, INVALID_WINDOW_MESSAGE); } } while((ch = getch()) != KEY_F(1)); free_memory(); endwin(); return 0; } WINDOW *create_newwin(int height, int width, int starty, int startx) { WINDOW *local_win; local_win = newwin(height, width, starty, startx); box(local_win, 0 , 0); /* 0, 0 gives default characters * for the vertical and horizontal * lines */ wrefresh(local_win); /* Show that box */ return local_win; } void destroy_win(WINDOW *local_win) { /* box(local_win, ' ', ' '); : This won't produce the desired * result of erasing the window. It will leave it's four corners * and so an ugly remnant of window. */ wborder(local_win, ' ', ' ', ' ',' ',' ',' ',' ',' '); /* The parameters taken are * 1. win: the window on which to operate * 2. ls: character to be used for the left side of the window * 3. rs: character to be used for the right side of the window * 4. ts: character to be used for the top side of the window * 5. bs: character to be used for the bottom side of the window * 6. tl: character to be used for the top left corner of the window * 7. tr: character to be used for the top right corner of the window * 8. bl: character to be used for the bottom left corner of the window * 9. br: character to be used for the bottom right corner of the window */ wrefresh(local_win); delwin(local_win); }