cordle/src/words.c

//
// Created by Gregory Gauthier on 06/10/2025.
//
/* words.c - Word list management implementation */
#include "../include/words.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <ctype.h>

/* Convert string to uppercase */
void to_upper(char *str) {
    int i;
    for (i = 0; str[i]; i++) {
        str[i] = toupper(str[i]);
    }
}

/* Load words from file */
int load_words(GameState *game, const char *filename) {
    FILE *file;
    char filepath[MAX_FILENAME];
    char line[32];
    char word[WORD_LENGTH + 1];
    int len;

    /* Construct file path */
    sprintf(filepath, "wordlists/%s", filename);

    file = fopen(filepath, "r");
    if (!file) {
        /* Try without wordlists/ prefix */
        file = fopen(filename, "r");
        if (!file) {
            return 0;
        }
    }

    game->word_count = 0;
    while (fgets(line, sizeof(line), file) && game->word_count < MAX_WORDS) {
        /* Remove newline and whitespace */
        len = strlen(line);
        while (len > 0 && (line[len - 1] == '\n' || line[len - 1] == '\r' || line[len - 1] == ' ')) {
            line[--len] = '\0';
        }

        if (len == WORD_LENGTH) {
            strcpy(word, line);
            to_upper(word);
            strcpy(game->words[game->word_count], word);
            game->word_count++;
        }
    }

    fclose(file);

    if (game->word_count == 0) {
        return 0;
    }

    /* Select random target word */
    srand((unsigned int) time(NULL));
    strcpy(game->target_word, game->words[rand() % game->word_count]);

    return 1;
}

/* Check if word exists in word list */
int is_valid_word(GameState *game, const char *word) {
    int i;
    char upper_word[WORD_LENGTH + 1];

    strcpy(upper_word, word);
    to_upper(upper_word);

    for (i = 0; i < game->word_count; i++) {
        if (strcmp(game->words[i], upper_word) == 0) {
            return 1;
        }
    }
    return 0;
}