michael@0: // Copyright 2011 Martin Gieseking <martin.gieseking@uos.de>.
michael@0: //
michael@0: // Redistribution and use in source and binary forms, with or without
michael@0: // modification, are permitted provided that the following conditions are
michael@0: // met:
michael@0: //
michael@0: //     * Redistributions of source code must retain the above copyright
michael@0: // notice, this list of conditions and the following disclaimer.
michael@0: //     * Redistributions in binary form must reproduce the above
michael@0: // copyright notice, this list of conditions and the following disclaimer
michael@0: // in the documentation and/or other materials provided with the
michael@0: // distribution.
michael@0: //     * Neither the name of Google Inc. nor the names of its
michael@0: // contributors may be used to endorse or promote products derived from
michael@0: // this software without specific prior written permission.
michael@0: //
michael@0: // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
michael@0: // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
michael@0: // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
michael@0: // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
michael@0: // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
michael@0: // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
michael@0: // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
michael@0: // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
michael@0: // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
michael@0: // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
michael@0: // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
michael@0: 
michael@0: #include "snappy.h"
michael@0: #include "snappy-c.h"
michael@0: 
michael@0: extern "C" {
michael@0: 
michael@0: snappy_status snappy_compress(const char* input,
michael@0:                               size_t input_length,
michael@0:                               char* compressed,
michael@0:                               size_t *compressed_length) {
michael@0:   if (*compressed_length < snappy_max_compressed_length(input_length)) {
michael@0:     return SNAPPY_BUFFER_TOO_SMALL;
michael@0:   }
michael@0:   snappy::RawCompress(input, input_length, compressed, compressed_length);
michael@0:   return SNAPPY_OK;
michael@0: }
michael@0: 
michael@0: snappy_status snappy_uncompress(const char* compressed,
michael@0:                                 size_t compressed_length,
michael@0:                                 char* uncompressed,
michael@0:                                 size_t* uncompressed_length) {
michael@0:   size_t real_uncompressed_length;
michael@0:   if (!snappy::GetUncompressedLength(compressed,
michael@0:                                      compressed_length,
michael@0:                                      &real_uncompressed_length)) {
michael@0:     return SNAPPY_INVALID_INPUT;
michael@0:   }
michael@0:   if (*uncompressed_length < real_uncompressed_length) {
michael@0:     return SNAPPY_BUFFER_TOO_SMALL;
michael@0:   }
michael@0:   if (!snappy::RawUncompress(compressed, compressed_length, uncompressed)) {
michael@0:     return SNAPPY_INVALID_INPUT;
michael@0:   }
michael@0:   *uncompressed_length = real_uncompressed_length;
michael@0:   return SNAPPY_OK;
michael@0: }
michael@0: 
michael@0: size_t snappy_max_compressed_length(size_t source_length) {
michael@0:   return snappy::MaxCompressedLength(source_length);
michael@0: }
michael@0: 
michael@0: snappy_status snappy_uncompressed_length(const char *compressed,
michael@0:                                          size_t compressed_length,
michael@0:                                          size_t *result) {
michael@0:   if (snappy::GetUncompressedLength(compressed,
michael@0:                                     compressed_length,
michael@0:                                     result)) {
michael@0:     return SNAPPY_OK;
michael@0:   } else {
michael@0:     return SNAPPY_INVALID_INPUT;
michael@0:   }
michael@0: }
michael@0: 
michael@0: snappy_status snappy_validate_compressed_buffer(const char *compressed,
michael@0:                                                 size_t compressed_length) {
michael@0:   if (snappy::IsValidCompressedBuffer(compressed, compressed_length)) {
michael@0:     return SNAPPY_OK;
michael@0:   } else {
michael@0:     return SNAPPY_INVALID_INPUT;
michael@0:   }
michael@0: }
michael@0: 
michael@0: }  // extern "C"