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

// パスを正規化する関数
char* normalizePath(const char* path) {
    char* resolvedPath;
    char* normalizedPath;

    // _fullpath は、相対パスを絶対パスに変換する関数です
    resolvedPath = _fullpath(NULL, path, 0);

    if (resolvedPath == NULL) {
        fprintf(stderr, "Error resolving path.\n");
        return NULL;
    }

    // パスを正規化
    normalizedPath = _fullpath(NULL, resolvedPath, 0);

    free(resolvedPath);

    if (normalizedPath == NULL) {
        fprintf(stderr, "Error normalizing path.\n");
        return NULL;
    }

    return normalizedPath;
}

int main() {
    const char* inputPath = "C:\\Users\\user\\.\\Documents\\..\\Downloads";
    char* normalizedPath = normalizePath(inputPath);

    if (normalizedPath != NULL) {
        printf("Input Path: %s\n", inputPath);
        printf("Normalized Path: %s\n", normalizedPath);

        free(normalizedPath);
    }

    return 0;
}