// advanced_linter.c
//
// Written by YOUR-NAME (YOUR-ZID)
// on TODAYS-DATE
//
// A mini linter that applies multiple formatting transformations to code lines.

#include <stdio.h>
#include <string.h>

#define MAX_LINE_LENGTH 1024

// Your function prototypes
void collapse_whitespace(char *line);
void add_operator_spacing(char *line);
void wrap_long_lines(char *line);

// Provided function prototypes
void lint_line(char *line);
void remove_newline(char *line);

// -----------------------------------------------------------------------------
// DO NOT CHANGE THE MAIN FUNCTION

int main(void) {
    char line[MAX_LINE_LENGTH];
    printf("Enter lines of code:\n");

    while (fgets(line, MAX_LINE_LENGTH, stdin) != NULL) {
        remove_newline(line);
        lint_line(line);
        printf("%s\n", line);
    }

    return 0;
}

// -----------------------------------------------------------------------------
// YOUR FUNCTIONS
// -----------------------------------------------------------------------------

// Replace multiple spaces with a single space.
void collapse_whitespace(char *line) {
    // TODO: Implement this function
}

// Add spaces around operators (= + - * /).
void add_operator_spacing(char *line) {
    // TODO: Implement this function
}

// Wrap lines longer than 80 characters so that there is at most 
// 80 characters per line.
void wrap_long_lines(char *line) {
    // TODO: Implement this function
}

// -----------------------------------------------------------------------------
// PROVIDED FUNCTIONS
// -----------------------------------------------------------------------------

// Applies every linting rule in order.
void lint_line(char *line) {
    collapse_whitespace(line);
    add_operator_spacing(line);
    wrap_long_lines(line);
}

// Helper function to remove the newline character from the end of a string
void remove_newline(char *line) {
    // Find the newline or end of string
    int i = 0;
    while (line[i] != '\n' && line[i] != '\0') {
        i++;
    }
    // Goto the last position in the array and replace with '\0'
    // Note: will have no effect if already at null terminator
    line[i] = '\0';
}