| // Copyright 2010-2015, Google Inc. |
| // All rights reserved. |
| // |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
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| // 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 |
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| |
| #ifndef MOZC_STORAGE_LOUDS_BIT_VECTOR_BASED_ARRAY_H_ |
| #define MOZC_STORAGE_LOUDS_BIT_VECTOR_BASED_ARRAY_H_ |
| |
| #include "base/port.h" |
| #include "storage/louds/simple_succinct_bit_vector_index.h" |
| |
| namespace mozc { |
| namespace storage { |
| namespace louds { |
| |
| // Implementation of an array of variable length of data by using bit vector |
| // supporting Rank/Select operations. |
| class BitVectorBasedArray { |
| public: |
| BitVectorBasedArray() { |
| } |
| |
| void Open(const uint8 *image); |
| void Close(); |
| |
| // Returns a pointer to the element and its length. |
| // Note: the result may contain '\0' chars, or may NOT be '\0'-terminated. |
| const char *Get(size_t index, size_t *length) const; |
| |
| private: |
| SimpleSuccinctBitVectorIndex index_; |
| size_t base_length_; |
| size_t step_length_; |
| const char *data_; |
| |
| DISALLOW_COPY_AND_ASSIGN(BitVectorBasedArray); |
| }; |
| |
| } // namespace louds |
| } // namespace storage |
| } // namespace mozc |
| |
| #endif // MOZC_STORAGE_LOUDS_BIT_VECTOR_BASED_ARRAY_H_ |