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author | Gregory Maxwell <gmaxwell@gmail.com> | 2012-05-08 12:37:27 -0700 |
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committer | Gregory Maxwell <gmaxwell@gmail.com> | 2012-05-08 12:37:27 -0700 |
commit | f1ae31d8af8e03acbd224d486542b4409acf01ff (patch) | |
tree | c8869fb430c7b33b235e870e1066c9edd47fc3d5 /src/main.cpp | |
parent | fa8cc47c4f70bd3e2b0f4bc5076aba40597b12ec (diff) | |
parent | 1d740055daa6e1668f047186d208b0693c6b21ba (diff) | |
download | bitcoin-f1ae31d8af8e03acbd224d486542b4409acf01ff.tar.xz |
Merge pull request #883 from sipa/loadblock
Add -loadblock to load from an external blk000?.dat file
Diffstat (limited to 'src/main.cpp')
-rw-r--r-- | src/main.cpp | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/src/main.cpp b/src/main.cpp index 821bfbb476..238f7c69e4 100644 --- a/src/main.cpp +++ b/src/main.cpp @@ -2028,6 +2028,62 @@ void PrintBlockTree() } } +bool LoadExternalBlockFile(FILE* fileIn) +{ + int nLoaded = 0; + { + LOCK(cs_main); + try { + CAutoFile blkdat(fileIn, SER_DISK, CLIENT_VERSION); + unsigned int nPos = 0; + while (nPos != -1 && blkdat.good() && !fRequestShutdown) + { + unsigned char pchData[65536]; + do { + fseek(blkdat, nPos, SEEK_SET); + int nRead = fread(pchData, 1, sizeof(pchData), blkdat); + if (nRead <= 8) + { + nPos = -1; + break; + } + void* nFind = memchr(pchData, pchMessageStart[0], nRead+1-sizeof(pchMessageStart)); + if (nFind) + { + if (memcmp(nFind, pchMessageStart, sizeof(pchMessageStart))==0) + { + nPos += ((unsigned char*)nFind - pchData) + sizeof(pchMessageStart); + break; + } + nPos += ((unsigned char*)nFind - pchData) + 1; + } + else + nPos += sizeof(pchData) - sizeof(pchMessageStart) + 1; + } while(!fRequestShutdown); + if (nPos == -1) + break; + fseek(blkdat, nPos, SEEK_SET); + unsigned int nSize; + blkdat >> nSize; + if (nSize > 0 && nSize <= MAX_BLOCK_SIZE) + { + CBlock block; + blkdat >> block; + if (ProcessBlock(NULL,&block)) + { + nLoaded++; + nPos += 4 + nSize; + } + } + } + } + catch (std::exception &e) + { + } + } + printf("Loaded %i blocks from external file\n", nLoaded); + return nLoaded > 0; +} |