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extmod/moddeflate: Add deflate module providing the DeflateIO class.

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This provides similar functionality to the former zlib.DecompIO and
especially CPython's gzip.GzipFile for both compression and decompression.

This class can be used directly, and also can be used from Python to
implement (via io.BytesIO) zlib.decompress and zlib.compress, as well as
gzip.GzipFile.

Enable/disable this on all ports/boards that zlib was previously configured
for.

This work was funded through GitHub Sponsors.

Signed-off-by: Jim Mussared <jim.mussared@gmail.com>
This commit is contained in:
Jim Mussared
2023-06-26 13:52:10 +10:00
committed by Damien George
parent e6c290c3d1
commit 3533924c36
12 changed files with 434 additions and 10 deletions
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6
extmod/modbinascii.c
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@@ -170,8 +170,8 @@ STATIC mp_obj_t mod_binascii_b2a_base64(size_t n_args, const mp_obj_t *pos_args,
}
STATIC MP_DEFINE_CONST_FUN_OBJ_KW(mod_binascii_b2a_base64_obj, 1, mod_binascii_b2a_base64);
#if 0 // MICROPY_PY_BINASCII_CRC32
#include "lib/uzlib/crc32.c"
#if MICROPY_PY_BINASCII_CRC32 && MICROPY_PY_DEFLATE
#include "lib/uzlib/uzlib.h"
STATIC mp_obj_t mod_binascii_crc32(size_t n_args, const mp_obj_t *args) {
mp_buffer_info_t bufinfo;
@@ -191,7 +191,7 @@ STATIC const mp_rom_map_elem_t mp_module_binascii_globals_table[] = {
#endif
{ MP_ROM_QSTR(MP_QSTR_a2b_base64), MP_ROM_PTR(&mod_binascii_a2b_base64_obj) },
{ MP_ROM_QSTR(MP_QSTR_b2a_base64), MP_ROM_PTR(&mod_binascii_b2a_base64_obj) },
#if 0 // MICROPY_PY_BINASCII_CRC32
#if MICROPY_PY_BINASCII_CRC32 && MICROPY_PY_DEFLATE
{ MP_ROM_QSTR(MP_QSTR_crc32), MP_ROM_PTR(&mod_binascii_crc32_obj) },
#endif
};