rom-properties/extlib/minizip-ng/doc/mz_host_system.md

MZ_HOST_SYSTEM

Host system enumeration. These values correspond to section 4.4.2.2 of the PKWARE zip app note.

Name	Code	Description
MZ_HOST_SYSTEM_MSDOS	0	MS-DOS
MZ_HOST_SYSTEM_UNIX	3	UNIX
MZ_HOST_SYSTEM_WINDOWS_NTFS	10	Windows NTFS
MZ_HOST_SYSTEM_RISCOS	13	RISC OS
MZ_HOST_SYSTEM_OSX_DARWIN	19	Darwin

The host system information is available in the version_madeby field in mz_zip_file.

Example

mz_zip_file *file_info = NULL;
mz_zip_entry_get_info(zip_handle, &file_info);
int32_t host_sys = MZ_HOST_SYSTEM(file_info->version_madeby);
printf("Host system value: %d\n", host_sys);
if (host_sys == MZ_HOST_SYSTEM_MSDOS) {
    printf("Zip entry attributes are MS-DOS compatible\n");
}