133 lines
1.9 KiB
C
133 lines
1.9 KiB
C
#include <fcntl.h>
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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 <signal.h>
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#include <ncurses.h>
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#include <sys/ioctl.h>
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#include <ctype.h>
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#include <math.h>
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#define NARGS 4096
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#define ARG_SIZE 50
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#define MAX 1000000
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#define MIN 50000
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int args;
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double values[NARGS + 1];
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struct winsize ws;
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int parse_double(const char *str, double *res) {
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char *ptr;
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*res = strtod(str, &ptr);
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if (*ptr)
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return 0;
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return 1;
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}
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int add_value(const char *str) {
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if (args >= sizeof(values) / sizeof(double) || args > ws.ws_col)
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return 1;
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double val = 0;
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if (!parse_double(str, &val))
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return 1;
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values[args] = val;
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args++;
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return 0;
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}
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void stdin_read(void) {
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char arg[ARG_SIZE + 1];
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char *p = arg;
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fflush(stdin);
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while (1) {
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int c = getchar();
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if (c == EOF)
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return;
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else if (c == ' ' && p != arg) {
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*p = '\0';
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p = arg;
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if (add_value(arg))
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break;
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}
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else {
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*p = c;
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if (p + 1 == arg + sizeof(arg))
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break;
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p++;
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}
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}
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}
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void mvprint(int y, int x, int lvl) {
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char *fmt = "@";
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if (lvl < 4) {
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fmt = "/";
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if (y > ws.ws_row / 2)
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fmt = "\\";
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}
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else if (lvl - 4 <= 2)
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fmt = "+";
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mvprintw(y, x, "%s", fmt);
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}
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void print(double value, double diff, int col) {
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size_t m_screen = ws.ws_row / 2;
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if (value >= 0) {
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int lvl = (int)round((value - MIN + 1) / diff * 2);
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mvprint(m_screen - lvl, col, lvl);
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}
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else {
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int lvl = (int)round(((value * -1) - MIN + 1) / diff * 2);
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mvprint(m_screen + lvl, col, lvl);
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}
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}
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void sig_handler(int sig) {
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(void)sig;
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endwin();
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exit(0);
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}
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int main(void) {
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signal(SIGINT, sig_handler);
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if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) < 0)
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return 1;
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initscr();
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curs_set(0);
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timeout(0);
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double diff = MAX - MIN + 1;
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if (diff < 1)
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diff = 1;
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while (1) {
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args = 0;
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stdin_read();
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clear();
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for (int i = 1; i < args - 1; i++)
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print((values[i - 1] + values[i] + values[i + 1]) / 4, diff, i);
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refresh();
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}
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}
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