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miniz: Improved the streaming write interface.

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This commit is contained in:
Vojtech Bubnik 2021-01-26 14:17:48 +01:00
parent 55c698feef
commit e82c502a47
2 changed files with 25 additions and 17 deletions
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36
src/miniz/miniz.c
View File

@ -6683,6 +6683,7 @@ mz_bool mz_zip_writer_add_staged_open(mz_zip_archive* pZip, mz_zip_writer_staged
mz_zip_internal_state* pState;
memset(pContext, 0, sizeof(mz_zip_writer_staged_context));
pContext->pZip = pZip;
pContext->gen_flags = MZ_ZIP_LDH_BIT_FLAG_HAS_LOCATOR;
pContext->uncomp_crc32 = MZ_CRC32_INIT;
pContext->method = MZ_DEFLATED;
@ -6774,7 +6775,7 @@ mz_bool mz_zip_writer_add_staged_open(mz_zip_archive* pZip, mz_zip_writer_staged
if (pZip->m_file_offset_alignment)
{
MZ_ASSERT((cur_archive_file_ofs & (pZip->m_file_offset_alignment - 1)) == 0);
MZ_ASSERT((pContext->cur_archive_file_ofs & (pZip->m_file_offset_alignment - 1)) == 0);
}
MZ_CLEAR_OBJ(local_dir_header);
@ -6857,12 +6858,13 @@ mz_bool mz_zip_writer_add_staged_open(mz_zip_archive* pZip, mz_zip_writer_staged
return MZ_TRUE;
}
mz_bool mz_zip_writer_add_staged_data(mz_zip_archive *pZip, mz_zip_writer_staged_context *pContext, const char *pRead_buf, size_t read_buf_size)
mz_bool mz_zip_writer_add_staged_data(mz_zip_writer_staged_context *pContext, const char *pRead_buf, size_t read_buf_size)
{
if (pContext->file_ofs + read_buf_size > pContext->max_size)
{
mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED);
pZip->m_pFree(pZip->m_pAlloc_opaque, pContext->pCompressor);
mz_zip_set_error(pContext->pZip, MZ_ZIP_FILE_READ_FAILED);
pContext->pZip->m_pFree(pContext->pZip->m_pAlloc_opaque, pContext->pCompressor);
pContext->pCompressor = NULL;
return MZ_FALSE;
}
@ -6876,7 +6878,7 @@ mz_bool mz_zip_writer_add_staged_data(mz_zip_archive *pZip, mz_zip_writer_staged
pContext->file_ofs += n;
pContext->uncomp_crc32 = (mz_uint32)mz_crc32(pContext->uncomp_crc32, (const mz_uint8 *)pRead_buf, n);
if (pZip->m_pNeeds_keepalive != NULL && pZip->m_pNeeds_keepalive(pZip->m_pIO_opaque))
if (pContext->pZip->m_pNeeds_keepalive != NULL && pContext->pZip->m_pNeeds_keepalive(pContext->pZip->m_pIO_opaque))
flush = TDEFL_FULL_FLUSH;
if (n == 0)
@ -6889,8 +6891,9 @@ mz_bool mz_zip_writer_add_staged_data(mz_zip_archive *pZip, mz_zip_writer_staged
}
else if (status != TDEFL_STATUS_OKAY)
{
mz_zip_set_error(pZip, MZ_ZIP_COMPRESSION_FAILED);
pZip->m_pFree(pZip->m_pAlloc_opaque, pContext->pCompressor);
mz_zip_set_error(pContext->pZip, MZ_ZIP_COMPRESSION_FAILED);
pContext->pZip->m_pFree(pContext->pZip->m_pAlloc_opaque, pContext->pCompressor);
pContext->pCompressor = NULL;
return MZ_FALSE;
}
pRead_buf += n;
@ -6899,12 +6902,15 @@ mz_bool mz_zip_writer_add_staged_data(mz_zip_archive *pZip, mz_zip_writer_staged
return MZ_TRUE;
}
mz_bool mz_zip_writer_add_staged_finish(mz_zip_archive *pZip, mz_zip_writer_staged_context *pContext)
mz_bool mz_zip_writer_add_staged_finish(mz_zip_writer_staged_context *pContext)
{
if (! mz_zip_writer_add_staged_data(pZip, pContext, NULL, 0))
if (! mz_zip_writer_add_staged_data(pContext, NULL, 0) ||
// Either never opened, or already finished.
! pContext->pCompressor)
return MZ_FALSE;
pZip->m_pFree(pZip->m_pAlloc_opaque, pContext->pCompressor);
pContext->pZip->m_pFree(pContext->pZip->m_pAlloc_opaque, pContext->pCompressor);
pContext->pCompressor = NULL;
pContext->uncomp_size = pContext->file_ofs;
pContext->comp_size = pContext->add_state.m_comp_size;
@ -6919,7 +6925,7 @@ mz_bool mz_zip_writer_add_staged_finish(mz_zip_archive *pZip, mz_zip_writer_stag
if (pContext->pExtra_data == NULL)
{
if (pContext->comp_size > MZ_UINT32_MAX)
return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE);
return mz_zip_set_error(pContext->pZip, MZ_ZIP_ARCHIVE_TOO_LARGE);
MZ_WRITE_LE32(local_dir_footer + 8, pContext->comp_size);
MZ_WRITE_LE32(local_dir_footer + 12, pContext->uncomp_size);
@ -6931,7 +6937,7 @@ mz_bool mz_zip_writer_add_staged_finish(mz_zip_archive *pZip, mz_zip_writer_stag
local_dir_footer_size = MZ_ZIP_DATA_DESCRIPTER_SIZE64;
}
if (pZip->m_pWrite(pZip->m_pIO_opaque, pContext->cur_archive_file_ofs, local_dir_footer, local_dir_footer_size) != local_dir_footer_size)
if (pContext->pZip->m_pWrite(pContext->pZip->m_pIO_opaque, pContext->cur_archive_file_ofs, local_dir_footer, local_dir_footer_size) != local_dir_footer_size)
return MZ_FALSE;
pContext->cur_archive_file_ofs += local_dir_footer_size;
@ -6943,13 +6949,13 @@ mz_bool mz_zip_writer_add_staged_finish(mz_zip_archive *pZip, mz_zip_writer_stag
(pContext->uncomp_size >= MZ_UINT32_MAX) ? &pContext->comp_size : NULL, (pContext->local_dir_header_ofs >= MZ_UINT32_MAX) ? &pContext->local_dir_header_ofs : NULL);
}
if (!mz_zip_writer_add_to_central_dir(pZip, pContext->pArchive_name, (mz_uint16)pContext->archive_name_size, pContext->pExtra_data, (mz_uint16)pContext->extra_size, pContext->pComment, pContext->comment_size,
if (!mz_zip_writer_add_to_central_dir(pContext->pZip, pContext->pArchive_name, (mz_uint16)pContext->archive_name_size, pContext->pExtra_data, (mz_uint16)pContext->extra_size, pContext->pComment, pContext->comment_size,
pContext->uncomp_size, pContext->comp_size, pContext->uncomp_crc32, pContext->method, pContext->gen_flags, pContext->dos_time, pContext->dos_date, pContext->local_dir_header_ofs, pContext->ext_attributes,
pContext->user_extra_data_central, pContext->user_extra_data_central_len))
return MZ_FALSE;
pZip->m_total_files++;
pZip->m_archive_size = pContext->cur_archive_file_ofs;
pContext->pZip->m_total_files++;
pContext->pZip->m_archive_size = pContext->cur_archive_file_ofs;
return MZ_TRUE;
}

6
src/miniz/miniz.h
View File

@ -1308,6 +1308,8 @@ typedef struct
typedef struct mz_zip_writer_staged_context
{
mz_zip_archive *pZip;
mz_uint16 gen_flags;
mz_uint uncomp_crc32;
mz_uint16 method;
@ -1346,8 +1348,8 @@ typedef struct mz_zip_writer_staged_context
mz_bool mz_zip_writer_add_staged_open(mz_zip_archive* pZip, mz_zip_writer_staged_context* pContext, const char* pArchive_name,
mz_uint64 max_size, const MZ_TIME_T* pFile_time, const void* pComment, mz_uint16 comment_size, mz_uint level_and_flags,
const char* user_extra_data, mz_uint user_extra_data_len, const char* user_extra_data_central, mz_uint user_extra_data_central_len);
mz_bool mz_zip_writer_add_staged_data(mz_zip_archive* pZip, mz_zip_writer_staged_context* pContext, const char* pRead_buf, size_t n);
mz_bool mz_zip_writer_add_staged_finish(mz_zip_archive* pZip, mz_zip_writer_staged_context* pContext);
mz_bool mz_zip_writer_add_staged_data(mz_zip_writer_staged_context* pContext, const char* pRead_buf, size_t n);
mz_bool mz_zip_writer_add_staged_finish(mz_zip_writer_staged_context* pContext);
/* Adds a file to an archive by fully cloning the data from another archive. */
/* This function fully clones the source file's compressed data (no recompression), along with its full filename, extra data (it may add or modify the zip64 local header extra data field), and the optional descriptor following the compressed data. */