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add feature auto detect m_file_archive_start_ofs of zip

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zhaozg 2019-05-01 18:37:34 +08:00
parent 9ae305f6e1
commit 0cda2f506d
1 changed files with 4 additions and 0 deletions
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4
miniz_zip.c
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@ -736,6 +736,10 @@ static mz_bool mz_zip_reader_read_central_dir(mz_zip_archive *pZip, mz_uint flag
cdir_ofs = MZ_READ_LE64(pZip64_end_of_central_dir + MZ_ZIP64_ECDH_CDIR_OFS_OFS);
}
/* Calculate the offset and compare to written offset to get size of data offset at front. */
if (pZip->m_pState->m_file_archive_start_ofs == 0)
pZip->m_pState->m_file_archive_start_ofs = cur_file_ofs - cdir_size - cdir_ofs;
if (pZip->m_total_files != cdir_entries_on_this_disk)
return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_MULTIDISK);