no-more-secrets-rust/src/nms.c

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#include <sys/ioctl.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <ctype.h>
#include <stdbool.h>
#define SPACE 32
#define NEWLINE 10
int getTermSizeRows(void);
int getTermSizeCols(void);
void clearTermWindow(int, int);
int main(void) {
struct winpos {
char source;
int row;
int col;
struct winpos *next;
};
struct winpos start;
struct winpos *list_pointer = &start;
struct winpos *temp; // Used for free()ing the list
int termSizeRows = getTermSizeRows();
int termSizeCols = getTermSizeCols();
// Geting input
int c, x = 1, y = 1;
bool first = true;
while ((c = getchar()) != EOF) {
if (c == NEWLINE) {
++y;
x = 1;
} else if (isspace(c)) {
++x;
} else if (first) {
start.source = c;
start.row = y;
start.col = x;
start.next = (struct winpos *) 0;
first = false;
++x;
} else {
// Allocate space for the new struct in our linked list
// and point *next to it.
list_pointer->next = malloc(sizeof(struct winpos));
// Now let's point list_pointer to the next structure
// and populate it.
list_pointer = list_pointer->next;
list_pointer->source = c;
list_pointer->row = y;
list_pointer->col = x;
list_pointer->next = (struct winpos *) 0;
++x;
}
}
clearTermWindow(termSizeRows, termSizeCols);
list_pointer = &start;
while (list_pointer != (struct winpos *) 0) {
printf("row: %i, ", list_pointer->row);
printf("col: %i, ", list_pointer->col);
printf("char: %c\n", list_pointer->source);
list_pointer = list_pointer->next;
}
// Freeing the list. Starting with the second list item because
// the first one was not created with malloc
list_pointer = start.next;
while (list_pointer != (struct winpos *) 0) {
temp = list_pointer;
list_pointer = list_pointer->next;
free(temp);
}
return 0;
}
int getTermSizeRows(void) {
struct winsize w;
ioctl(STDOUT_FILENO, TIOCGWINSZ, &w);
return w.ws_row;
}
int getTermSizeCols(void) {
struct winsize w;
ioctl(STDOUT_FILENO, TIOCGWINSZ, &w);
return w.ws_col;
}
void clearTermWindow(int pRows, int pCols) {
int row, col;
// Clearing window
for (row = 1; row <= pRows; ++row) {
for (col = 1; col <= pCols; ++col)
printf("\033[%i;%iH%c", row, col, SPACE);
printf("\033[%i;%iH%c", row, col, NEWLINE);
}
// Position cursor at the top
printf("\033[%i;%iH", 1, 1);
}