/** * apr tutorial sample code * http://dev.ariel-networks.com/apr/ */#ifdef HAVE_CONFIG_H#include <config.h>#endif#include <stdio.h>#include <stdlib.h>#include <assert.h>#include <apr_general.h>#include <apr_file_io.h>/** * file info sample code * @remark Error checks omitted */int main(int argc, const char *argv[]){    apr_status_t rv;    apr_pool_t *mp;    apr_file_t *fp;    const char *fname;    apr_finfo_t finfo;            if (argc < 2) {        printf("usage %s output-filename\n", argv[0]);        return 0;    }    fname = argv[1];    apr_initialize();    apr_pool_create(&mp, NULL);    /* @remark after apr-1.1.0, use APR_FOPEN_READ intead of APR_READ */    if ((rv = apr_file_open(&fp, fname, APR_READ, APR_OS_DEFAULT, mp)) != APR_SUCCESS) {        return -1;    }    /* the following two ways have the same effects.     * if you have opened the file, the former is better. Otherwise, the latter is better */        /* you can get file info. by apr_file_t */    rv = apr_file_info_get(&finfo, APR_FINFO_NORM, fp);    /* you can get file info. by file name, too */    rv = apr_stat(&finfo, fname, APR_FINFO_NORM, mp);        apr_file_close(fp);    apr_terminate();    return 0;}