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193
src/main.c
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193
src/main.c
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/**
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* Copyright (c) 2014, Miguel Angel Astor Romero. All rights reserved.
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* See the file LICENSE for more details.
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*/
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <time.h>
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#include <errno.h>
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#include <signal.h>
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#include <ncurses.h>
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#include <termios.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/ioctl.h>
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#include "constants.h"
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void leave(void);
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void manage_signal(int signal);
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int start_ncurses(void);
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void set_colors(void);
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void clear_screen(void);
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void on_resize(int);
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static int w = 0, h = 0;
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int main() {
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bool finished = false;
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char *home_dir = getenv("HOME");
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char *data_dir;
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char *log_file;
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time_t raw_date;
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struct tm *current_date;
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atexit(leave);
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signal(SIGINT, manage_signal);
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signal(SIGSEGV, manage_signal);
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signal(SIGTERM, manage_signal);
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signal(SIGWINCH, on_resize);
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/* If there is a HOME environment variable, enable scoring. */
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if(home_dir != NULL){
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/* If we got the user's home directory, build the data directory path. */
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data_dir = (char*)malloc(strlen(home_dir) + 7);
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strcpy(data_dir, home_dir);
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strcat(data_dir, "/.tomb");
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/* Redirect stderr output to a file. */
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log_file = (char*)malloc(strlen(data_dir) + 8);
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strcpy(log_file, data_dir);
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strcat(log_file, "/stderr");
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freopen(log_file, "a", stderr);
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/* Log the current date and time. */
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time(&raw_date);
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current_date = localtime(&raw_date);
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fprintf(stderr, "%s", asctime(current_date));
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/* Try to create the data directory with permissions 775. */
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if(mkdir(data_dir, S_IRWXU | S_IWGRP | S_IRGRP| S_IROTH | S_IXOTH) == 0){
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/* The data directory was sucessfully created. */
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//init_scores(data_dir);
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}else{
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if(errno != EEXIST){
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/* The directory does not exists and could not be created. */
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perror("\tmain.c");
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fprintf(stderr, "\tdata_dir is: %s\n", data_dir);
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//init_scores(NULL);
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}else{
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/* The directory already exits. */
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//init_scores(data_dir);
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}
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}
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}else{
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/* If there is no HOME environment variable, quit. */
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fprintf(stderr, "\tmain.c: Couldn't find the user's home directory\n");
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return EXIT_FAILURE;
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}
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/* Start ncurses. */
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if(start_ncurses() != 0){
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fprintf(stderr, "\tmain.c: Ncurses could not be initialized.\n");
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return EXIT_FAILURE;
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}
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set_colors();
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do{
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clear_screen();
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refresh();
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}while(!finished);
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return EXIT_SUCCESS;
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}
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void leave(void){
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int i;
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/* Finish ncurses. */
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endwin();
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/* Close the scores database and todays log. */
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// close_scores();
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for(i = 0; i < 80; i++)
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fprintf(stderr, "-");
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fprintf(stderr, "\n");
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}
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void manage_signal(int signal){
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switch(signal){
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case SIGINT:
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fprintf(stderr, "\tSIGINT caught.\n");
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break;
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case SIGSEGV:
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fprintf(stderr, "\tSegmentation fault.\n");
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case SIGTERM:
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exit(EXIT_FAILURE);
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break;
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}
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}
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void on_resize(int signal){
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struct winsize ws;
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/* Request the new size of the terminal. */
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ioctl(1, TIOCGWINSZ, &ws);
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/* Resize ncurse's stdscr. */
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resizeterm(ws.ws_row, ws.ws_col);
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/* Get the new size of the window. */
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getmaxyx(stdscr, h, w);
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fprintf(stderr, "\tSIGWINCH caught. (W: %d, H: %d)\n", w, h);
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}
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int start_ncurses(void){
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WINDOW *win_ptr;
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int ret_code;
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/* Prepare the terminal. */
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win_ptr = initscr();
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if(win_ptr == NULL)
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return -1;
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/* Enable special characters. */
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ret_code = keypad(stdscr, TRUE);
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if(ret_code == ERR)
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return -1;
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/* Disable line buffering. */
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ret_code = cbreak();
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if(ret_code == ERR)
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return -1;
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/* Disable echo. */
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ret_code = noecho();
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if(ret_code == ERR)
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return -1;
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/* Hide the cursor. */
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ret_code = curs_set(FALSE);
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if(ret_code == ERR)
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return -1;
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/* Initialize the screen size variables. */
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getmaxyx(stdscr, h, w);
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return 0;
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}
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void set_colors(void){
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int ret_code;
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ret_code = start_color();
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if(ret_code == OK){
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if(has_colors() == TRUE){
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init_pair(1, COLOR_WHITE, COLOR_RED); /* The color for the top and bottom bars. */
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init_pair(2, COLOR_WHITE, COLOR_BLACK); /* Basic text color. */
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init_pair(3, COLOR_YELLOW, COLOR_BLACK); /* Highlighted text color. */
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init_pair(4, COLOR_BLUE, COLOR_BLACK); /* Lights off color. */
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init_pair(5, COLOR_RED, COLOR_BLACK); /* Dim light color. */
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init_pair(6, COLOR_YELLOW, COLOR_BLACK); /* Lights on color. */
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init_pair(7, COLOR_YELLOW, COLOR_YELLOW); /* Main GUI bar color. */
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init_pair(8, COLOR_WHITE, COLOR_WHITE); /* Empty GUI bar color. */
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}
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}
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}
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void clear_screen(void){
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int i, j;
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move(0,0);
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attron(COLOR_PAIR(BSC_COLOR));
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for(i = 0; i < w; i++){
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for(j = 0; j < h; j++){
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move(j, i);
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printw(" ");
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}
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}
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}
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