zip_source_filep_create() create a zip source from a file stream. They read len bytes from offset start from the open file stream file. If len is 0 or -1, the whole file (starting from start) is used.
If the file stream supports seeking, the source can be used to open a read-only zip archive from.
The file stream is closed when the source is being freed, usually by zip_close(3).
NULLis returned and the error code in archive or error is set to indicate the error.
zip_source_filep() fails if:
zip_source_filep_create() were added in libzip 1.0.