diff options
Diffstat (limited to 'storage/tokudb/PerconaFT/third_party/xz-4.999.9beta/src/liblzma/common/filter_buffer_encoder.c')
-rw-r--r-- | storage/tokudb/PerconaFT/third_party/xz-4.999.9beta/src/liblzma/common/filter_buffer_encoder.c | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/storage/tokudb/PerconaFT/third_party/xz-4.999.9beta/src/liblzma/common/filter_buffer_encoder.c b/storage/tokudb/PerconaFT/third_party/xz-4.999.9beta/src/liblzma/common/filter_buffer_encoder.c new file mode 100644 index 00000000000..4b72e57e21e --- /dev/null +++ b/storage/tokudb/PerconaFT/third_party/xz-4.999.9beta/src/liblzma/common/filter_buffer_encoder.c @@ -0,0 +1,56 @@ +/* -*- mode: C; c-basic-offset: 4; indent-tabs-mode: nil -*- */ +// vim: expandtab:ts=8:sw=4:softtabstop=4: +/////////////////////////////////////////////////////////////////////////////// +// +/// \file filter_buffer_encoder.c +/// \brief Single-call raw encoding +// +// Author: Lasse Collin +// +// This file has been put into the public domain. +// You can do whatever you want with this file. +// +/////////////////////////////////////////////////////////////////////////////// + +#include "filter_encoder.h" + + +extern LZMA_API(lzma_ret) +lzma_raw_buffer_encode(const lzma_filter *filters, lzma_allocator *allocator, + const uint8_t *in, size_t in_size, uint8_t *out, + size_t *out_pos, size_t out_size) +{ + // Validate what isn't validated later in filter_common.c. + if ((in == NULL && in_size != 0) || out == NULL + || out_pos == NULL || *out_pos > out_size) + return LZMA_PROG_ERROR; + + // Initialize the encoder + lzma_next_coder next = LZMA_NEXT_CODER_INIT; + return_if_error(lzma_raw_encoder_init(&next, allocator, filters)); + + // Store the output position so that we can restore it if + // something goes wrong. + const size_t out_start = *out_pos; + + // Do the actual encoding and free coder's memory. + size_t in_pos = 0; + lzma_ret ret = next.code(next.coder, allocator, in, &in_pos, in_size, + out, out_pos, out_size, LZMA_FINISH); + lzma_next_end(&next, allocator); + + if (ret == LZMA_STREAM_END) { + ret = LZMA_OK; + } else { + if (ret == LZMA_OK) { + // Output buffer was too small. + assert(*out_pos == out_size); + ret = LZMA_BUF_ERROR; + } + + // Restore the output position. + *out_pos = out_start; + } + + return ret; +} |