| // Copyright 2011 Martin Gieseking <martin.gieseking@uos.de>. |
| // |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following disclaimer |
| // in the documentation and/or other materials provided with the |
| // distribution. |
| // * Neither the name of Google Inc. nor the names of its |
| // contributors may be used to endorse or promote products derived from |
| // this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| #include "snappy.h" |
| #include "snappy-c.h" |
| |
| extern "C" { |
| |
| snappy_status snappy_compress(const char* input, |
| size_t input_length, |
| char* compressed, |
| size_t *compressed_length) { |
| if (*compressed_length < snappy_max_compressed_length(input_length)) { |
| return SNAPPY_BUFFER_TOO_SMALL; |
| } |
| snappy::RawCompress(input, input_length, compressed, compressed_length); |
| return SNAPPY_OK; |
| } |
| |
| snappy_status snappy_uncompress(const char* compressed, |
| size_t compressed_length, |
| char* uncompressed, |
| size_t* uncompressed_length) { |
| size_t real_uncompressed_length; |
| if (!snappy::GetUncompressedLength(compressed, |
| compressed_length, |
| &real_uncompressed_length)) { |
| return SNAPPY_INVALID_INPUT; |
| } |
| if (*uncompressed_length < real_uncompressed_length) { |
| return SNAPPY_BUFFER_TOO_SMALL; |
| } |
| if (!snappy::RawUncompress(compressed, compressed_length, uncompressed)) { |
| return SNAPPY_INVALID_INPUT; |
| } |
| *uncompressed_length = real_uncompressed_length; |
| return SNAPPY_OK; |
| } |
| |
| size_t snappy_max_compressed_length(size_t source_length) { |
| return snappy::MaxCompressedLength(source_length); |
| } |
| |
| snappy_status snappy_uncompressed_length(const char *compressed, |
| size_t compressed_length, |
| size_t *result) { |
| if (snappy::GetUncompressedLength(compressed, |
| compressed_length, |
| result)) { |
| return SNAPPY_OK; |
| } else { |
| return SNAPPY_INVALID_INPUT; |
| } |
| } |
| |
| snappy_status snappy_validate_compressed_buffer(const char *compressed, |
| size_t compressed_length) { |
| if (snappy::IsValidCompressedBuffer(compressed, compressed_length)) { |
| return SNAPPY_OK; |
| } else { |
| return SNAPPY_INVALID_INPUT; |
| } |
| } |
| |
| } // extern "C" |
