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-rw-r--r--src/leveldb/util/coding.cc194
1 files changed, 0 insertions, 194 deletions
diff --git a/src/leveldb/util/coding.cc b/src/leveldb/util/coding.cc
deleted file mode 100644
index 21e3186d5..000000000
--- a/src/leveldb/util/coding.cc
+++ /dev/null
@@ -1,194 +0,0 @@
-// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file. See the AUTHORS file for names of contributors.
-
-#include "util/coding.h"
-
-namespace leveldb {
-
-void EncodeFixed32(char* buf, uint32_t value) {
- if (port::kLittleEndian) {
- memcpy(buf, &value, sizeof(value));
- } else {
- buf[0] = value & 0xff;
- buf[1] = (value >> 8) & 0xff;
- buf[2] = (value >> 16) & 0xff;
- buf[3] = (value >> 24) & 0xff;
- }
-}
-
-void EncodeFixed64(char* buf, uint64_t value) {
- if (port::kLittleEndian) {
- memcpy(buf, &value, sizeof(value));
- } else {
- buf[0] = value & 0xff;
- buf[1] = (value >> 8) & 0xff;
- buf[2] = (value >> 16) & 0xff;
- buf[3] = (value >> 24) & 0xff;
- buf[4] = (value >> 32) & 0xff;
- buf[5] = (value >> 40) & 0xff;
- buf[6] = (value >> 48) & 0xff;
- buf[7] = (value >> 56) & 0xff;
- }
-}
-
-void PutFixed32(std::string* dst, uint32_t value) {
- char buf[sizeof(value)];
- EncodeFixed32(buf, value);
- dst->append(buf, sizeof(buf));
-}
-
-void PutFixed64(std::string* dst, uint64_t value) {
- char buf[sizeof(value)];
- EncodeFixed64(buf, value);
- dst->append(buf, sizeof(buf));
-}
-
-char* EncodeVarint32(char* dst, uint32_t v) {
- // Operate on characters as unsigneds
- unsigned char* ptr = reinterpret_cast<unsigned char*>(dst);
- static const int B = 128;
- if (v < (1<<7)) {
- *(ptr++) = v;
- } else if (v < (1<<14)) {
- *(ptr++) = v | B;
- *(ptr++) = v>>7;
- } else if (v < (1<<21)) {
- *(ptr++) = v | B;
- *(ptr++) = (v>>7) | B;
- *(ptr++) = v>>14;
- } else if (v < (1<<28)) {
- *(ptr++) = v | B;
- *(ptr++) = (v>>7) | B;
- *(ptr++) = (v>>14) | B;
- *(ptr++) = v>>21;
- } else {
- *(ptr++) = v | B;
- *(ptr++) = (v>>7) | B;
- *(ptr++) = (v>>14) | B;
- *(ptr++) = (v>>21) | B;
- *(ptr++) = v>>28;
- }
- return reinterpret_cast<char*>(ptr);
-}
-
-void PutVarint32(std::string* dst, uint32_t v) {
- char buf[5];
- char* ptr = EncodeVarint32(buf, v);
- dst->append(buf, ptr - buf);
-}
-
-char* EncodeVarint64(char* dst, uint64_t v) {
- static const int B = 128;
- unsigned char* ptr = reinterpret_cast<unsigned char*>(dst);
- while (v >= B) {
- *(ptr++) = (v & (B-1)) | B;
- v >>= 7;
- }
- *(ptr++) = static_cast<unsigned char>(v);
- return reinterpret_cast<char*>(ptr);
-}
-
-void PutVarint64(std::string* dst, uint64_t v) {
- char buf[10];
- char* ptr = EncodeVarint64(buf, v);
- dst->append(buf, ptr - buf);
-}
-
-void PutLengthPrefixedSlice(std::string* dst, const Slice& value) {
- PutVarint32(dst, value.size());
- dst->append(value.data(), value.size());
-}
-
-int VarintLength(uint64_t v) {
- int len = 1;
- while (v >= 128) {
- v >>= 7;
- len++;
- }
- return len;
-}
-
-const char* GetVarint32PtrFallback(const char* p,
- const char* limit,
- uint32_t* value) {
- uint32_t result = 0;
- for (uint32_t shift = 0; shift <= 28 && p < limit; shift += 7) {
- uint32_t byte = *(reinterpret_cast<const unsigned char*>(p));
- p++;
- if (byte & 128) {
- // More bytes are present
- result |= ((byte & 127) << shift);
- } else {
- result |= (byte << shift);
- *value = result;
- return reinterpret_cast<const char*>(p);
- }
- }
- return NULL;
-}
-
-bool GetVarint32(Slice* input, uint32_t* value) {
- const char* p = input->data();
- const char* limit = p + input->size();
- const char* q = GetVarint32Ptr(p, limit, value);
- if (q == NULL) {
- return false;
- } else {
- *input = Slice(q, limit - q);
- return true;
- }
-}
-
-const char* GetVarint64Ptr(const char* p, const char* limit, uint64_t* value) {
- uint64_t result = 0;
- for (uint32_t shift = 0; shift <= 63 && p < limit; shift += 7) {
- uint64_t byte = *(reinterpret_cast<const unsigned char*>(p));
- p++;
- if (byte & 128) {
- // More bytes are present
- result |= ((byte & 127) << shift);
- } else {
- result |= (byte << shift);
- *value = result;
- return reinterpret_cast<const char*>(p);
- }
- }
- return NULL;
-}
-
-bool GetVarint64(Slice* input, uint64_t* value) {
- const char* p = input->data();
- const char* limit = p + input->size();
- const char* q = GetVarint64Ptr(p, limit, value);
- if (q == NULL) {
- return false;
- } else {
- *input = Slice(q, limit - q);
- return true;
- }
-}
-
-const char* GetLengthPrefixedSlice(const char* p, const char* limit,
- Slice* result) {
- uint32_t len;
- p = GetVarint32Ptr(p, limit, &len);
- if (p == NULL) return NULL;
- if (p + len > limit) return NULL;
- *result = Slice(p, len);
- return p + len;
-}
-
-bool GetLengthPrefixedSlice(Slice* input, Slice* result) {
- uint32_t len;
- if (GetVarint32(input, &len) &&
- input->size() >= len) {
- *result = Slice(input->data(), len);
- input->remove_prefix(len);
- return true;
- } else {
- return false;
- }
-}
-
-} // namespace leveldb