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* env_chromium.cc should not export symbols.
* Fix MSVC warnings.
* Removed large value support.
* Fix broken reference to documentation file

git-svn-id: https://leveldb.googlecode.com/svn/trunk@24 62dab493-f737-651d-591e-8d6aee1b9529
This commit is contained in:
dgrogan@chromium.org
2011-04-20 22:48:11 +00:00
parent 69c6d38342
commit ba6dac0e80
44 changed files with 152 additions and 1165 deletions
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65
db/dbformat.cc
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@@ -84,69 +84,4 @@ void InternalKeyComparator::FindShortSuccessor(std::string* key) const {
}
}
LargeValueRef LargeValueRef::Make(const Slice& value, CompressionType ctype) {
LargeValueRef result;
port::SHA1_Hash(value.data(), value.size(), &result.data[0]);
EncodeFixed64(&result.data[20], value.size());
result.data[28] = static_cast<unsigned char>(ctype);
return result;
}
std::string LargeValueRefToFilenameString(const LargeValueRef& h) {
assert(sizeof(h.data) == LargeValueRef::ByteSize());
assert(sizeof(h.data) == 29); // So we can hardcode the array size of buf
static const char tohex[] = "0123456789abcdef";
char buf[20*2];
for (int i = 0; i < 20; i++) {
buf[2*i] = tohex[(h.data[i] >> 4) & 0xf];
buf[2*i+1] = tohex[h.data[i] & 0xf];
}
std::string result = std::string(buf, sizeof(buf));
result += "-";
result += NumberToString(h.ValueSize());
result += "-";
result += NumberToString(static_cast<uint64_t>(h.compression_type()));
return result;
}
static uint32_t hexvalue(char c) {
if (c >= '0' && c <= '9') {
return c - '0';
} else if (c >= 'A' && c <= 'F') {
return 10 + c - 'A';
} else {
assert(c >= 'a' && c <= 'f');
return 10 + c - 'a';
}
}
bool FilenameStringToLargeValueRef(const Slice& s, LargeValueRef* h) {
Slice in = s;
if (in.size() < 40) {
return false;
}
for (int i = 0; i < 20; i++) {
if (!isxdigit(in[i*2]) || !isxdigit(in[i*2+1])) {
return false;
}
unsigned char c = (hexvalue(in[i*2])<<4) | hexvalue(in[i*2+1]);
h->data[i] = c;
}
in.remove_prefix(40);
uint64_t value_size, ctype;
if (ConsumeChar(&in, '-') &&
ConsumeDecimalNumber(&in, &value_size) &&
ConsumeChar(&in, '-') &&
ConsumeDecimalNumber(&in, &ctype) &&
in.empty() &&
(ctype <= kSnappyCompression)) {
EncodeFixed64(&h->data[20], value_size);
h->data[28] = static_cast<unsigned char>(ctype);
return true;
} else {
return false;
}
}
}