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PrusaResearch (Vojtech) homebrewed the following:

Browse source 
mz_zip_writer_add_staged_open(), mz_zip_writer_add_staged_data() and mz_zip_writer_add_staged_finish()
were derived from mz_zip_writer_add_read_buf_callback() by splitting it and passing a new
mz_zip_writer_staged_context between them.
This commit is contained in:
Vojtech Bubnik 2021-01-26 12:19:08 +01:00
parent 8009970715
commit 729298c408
3 changed files with 337 additions and 8 deletions
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52
src/miniz/miniz.h
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@ -1297,6 +1297,58 @@ mz_bool mz_zip_writer_add_cfile(mz_zip_archive *pZip, const char *pArchive_name,
const char *user_extra_data_central, mz_uint user_extra_data_central_len);
#endif
#define MZ_ZIP64_MAX_CENTRAL_EXTRA_FIELD_SIZE (sizeof(mz_uint16) * 2 + sizeof(mz_uint64) * 3)
typedef struct
{
mz_zip_archive* m_pZip;
mz_uint64 m_cur_archive_file_ofs;
mz_uint64 m_comp_size;
} mz_zip_writer_add_state;
typedef struct mz_zip_writer_staged_context
{
mz_uint16 gen_flags;
mz_uint uncomp_crc32;
mz_uint16 method;
mz_uint16 dos_time;
mz_uint16 dos_date;
mz_uint16 ext_attributes;
mz_uint64 local_dir_header_ofs;
mz_uint64 cur_archive_file_ofs;
size_t archive_name_size;
mz_uint64 uncomp_size;
mz_uint64 comp_size;
mz_uint64 max_size;
mz_uint8 *pExtra_data;
mz_uint32 extra_size;
mz_uint8 extra_data[MZ_ZIP64_MAX_CENTRAL_EXTRA_FIELD_SIZE];
/*
* Compressor context
*/
mz_zip_writer_add_state add_state;
tdefl_compressor *pCompressor;
mz_uint64 file_ofs;
/*
* The following data is passed to the "finish" stage, the referenced pointers must still be valid!
*/
const char* pArchive_name;
const void* pComment;
mz_uint16 comment_size;
const char* user_extra_data_central;
mz_uint user_extra_data_central_len;
} mz_zip_writer_staged_context;
/* Adds a file to an archive piecewise. Minimum size of the raw data is 4 bytes. */
/* Don't call mz_zip_writer_add_staged_finish() if mz_zip_writer_add_staged_open() or mz_zip_writer_add_staged_data() fails. */
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);
/* 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. */
mz_bool mz_zip_writer_add_from_zip_reader(mz_zip_archive *pZip, mz_zip_archive *pSource_zip, mz_uint src_file_index);