lib/coordinate.c


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#include <ctype.h>
#include <string.h>

#include "coordinate.h"

static int _valid_coord(char col, char row) {
    if (col >= 'a' && col <= 'h' && row >= '1' && row <= '8')
        return 0;

    return 1;
}

int coord_init(Coord* c, char col, char row) {
    char lower_col = tolower(col);
    char lower_row = tolower(row);

    if (! _valid_coord(lower_col, lower_row))
        return 1;

    c->row = row;
    c->col = col;

    return 0;        
}

int coord_init_from_str(Coord* c, char* s) {
    if (strlen(s) != 2)
        return 1;

    return coord_init(c, s[0], s[1]);
}