file list helper

#include "flist.h"

int main() {

    FList *f;

    f = init_file_list("/");
    get_file_list(f);
    print_file_list(f);
    printf("file count: %li", f->count);
    free_file_list(f);

    return 0;
}


FList *init_file_list(const char *path){
    FList *f = (FList*)malloc(sizeof(FList));
    f->count = 0;
    f->path = (char*)malloc(sizeof(char)*(strlen(path)+1));
    strcpy(f->path,path);
    return f;
}

void get_file_list(FList *f){
    size_t index = 0;
    recurse_dir(f->path, &(f->files), &(f->count));
    f->files = (char**)malloc(f->count*sizeof(char*));
    recurse_dir(f->path, &(f->files), &index);
}

void print_file_list(FList *f){
    size_t i;
    for (i = 0; i < f->count; i++) {
        printf("%s\n", f->files[i]);
    }
}

void free_file_list(FList *f){
    size_t i;
    for (i = 0; i < f->count; i++) {
        free((void*)(f->files)[i]);
    }
    free((void*)f->files);
    free((void*)f);
}

void recurse_dir(char *path, char ***files, size_t *index){

    char *newpath;
    struct dirent *ent;
    DIR *dir = opendir(path);

    if (dir == NULL) {
        perror("erro ao abrir diretorio");
        return;
    }

    while ((ent = readdir(dir)) != NULL){
        if (ent->d_type == DT_DIR && strcmp(ent->d_name, ".") != 0 && strcmp(ent->d_name, "..") != 0 && (ent->d_name[0] != '.')) {
            build_path(&(newpath), path, ent->d_name);
            recurse_dir(newpath, files, index);
            free((void *)newpath);
        }
        else if (ent->d_type == DT_REG && ent->d_name[0] != '.') {
            if(*files != NULL){
                build_path(&(newpath), path, ent->d_name);
                *((*files) + *index) = newpath;
            }
            (*index)++;
        }
    }
    closedir(dir);
}

void build_path(char **fullpath, const char *path, const char *filename){
    *fullpath = malloc(strlen(path) + strlen(filename) + 2);
    if(*fullpath == NULL){
        perror("erro ao alocar memoria para os enderecos de arquivo");
        exit(1);
    }
    strcpy(*fullpath, path);
    strcat(*fullpath, "/");
    strcat(*fullpath, filename);
}