file_utils.cpp

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/*
# =============================================================================
# Copyright (c) 2016 - 2021 Blue Brain Project/EPFL
#
# See top-level LICENSE file for details.
# =============================================================================
*/
 
#include <cstdio>
#include <cstring>
#include <cstdlib>
#include <sys/stat.h>
#include <errno.h>
 
#if defined(MINGW)
#define mkdir(dir_name, permission) _mkdir(dir_name)
#endif
 
/* adapted from : gist@jonathonreinhart/mkdir_p.c */
int mkdir_p(const char* path) {
    const int path_len = strlen(path);
    if (path_len == 0) {
        printf("Warning: Empty path for creating directory");
        return -1;
    }
 
    char* dirpath = new char[path_len + 1];
    strcpy(dirpath, path);
    errno = 0;
 
    /* iterate from outer upto inner dir */
    for (char* p = dirpath + 1; *p; p++) {
        if (*p == '/') {
            /* temporarily truncate to sub-dir */
            *p = '\0';
 
            if (mkdir(dirpath, S_IRWXU) != 0) {
                if (errno != EEXIST)
                    return -1;
            }
            *p = '/';
        }
    }
 
    if (mkdir(dirpath, S_IRWXU) != 0) {
        if (errno != EEXIST) {
            return -1;
        }
    }
 
    delete[] dirpath;
    return 0;
}