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https://github.com/minetest/minetest.git
synced 2024-11-23 08:03:45 +01:00
New map directory structure that avoids map size being limited by filesystem
This commit is contained in:
Ciaran Gultnieks
parent
f1bdc6b187
commit
e09fec3373
@ -290,5 +290,24 @@ bool RecursiveDeleteContent(std::string path)
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return true;
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}
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bool CreateAllDirs(std::string path)
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{
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size_t pos;
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std::vector<std::string> tocreate;
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std::string basepath = path;
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while(!PathExists(basepath))
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{
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tocreate.push_back(basepath);
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pos = basepath.rfind('/');
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if(pos == std::string::npos)
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return false;
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basepath = basepath.substr(0,pos);
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}
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for(int i=tocreate.size()-1;i>=0;i--)
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CreateDir(tocreate[i]);
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return true;
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}
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} // namespace fs
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@ -38,6 +38,9 @@ std::vector<DirListNode> GetDirListing(std::string path);
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// Returns true if already exists
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bool CreateDir(std::string path);
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// Create all directories on the given path that don't already exist.
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bool CreateAllDirs(std::string path);
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bool PathExists(std::string path);
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// Only pass full paths to this one. True on success.
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124
src/map.cpp
124
src/map.cpp
@ -4875,9 +4875,9 @@ plan_b:
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return (s16)level;
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}
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void ServerMap::createDir(std::string path)
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void ServerMap::createDirs(std::string path)
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{
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if(fs::CreateDir(path) == false)
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if(fs::CreateAllDirs(path) == false)
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{
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m_dout<<DTIME<<"ServerMap: Failed to create directory "
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<<"\""<<path<<"\""<<std::endl;
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@ -4885,29 +4885,52 @@ void ServerMap::createDir(std::string path)
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}
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}
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std::string ServerMap::getSectorSubDir(v2s16 pos)
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std::string ServerMap::getSectorDir(v2s16 pos, int layout)
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{
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char cc[9];
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snprintf(cc, 9, "%.4x%.4x",
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(unsigned int)pos.X&0xffff,
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(unsigned int)pos.Y&0xffff);
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switch(layout)
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{
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case 1:
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snprintf(cc, 9, "%.4x%.4x",
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(unsigned int)pos.X&0xffff,
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(unsigned int)pos.Y&0xffff);
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return std::string(cc);
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}
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return m_savedir + "/sectors/" + cc;
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case 2:
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snprintf(cc, 9, "%.3x/%.3x",
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(unsigned int)pos.X&0xfff,
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(unsigned int)pos.Y&0xfff);
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std::string ServerMap::getSectorDir(v2s16 pos)
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{
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return m_savedir + "/sectors/" + getSectorSubDir(pos);
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return m_savedir + "/sectors2/" + cc;
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default:
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assert(false);
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}
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}
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v2s16 ServerMap::getSectorPos(std::string dirname)
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{
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if(dirname.size() != 8)
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throw InvalidFilenameException("Invalid sector directory name");
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unsigned int x, y;
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int r = sscanf(dirname.c_str(), "%4x%4x", &x, &y);
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if(r != 2)
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throw InvalidFilenameException("Invalid sector directory name");
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int r;
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size_t spos = dirname.rfind('/') + 1;
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assert(spos != std::string::npos);
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if(dirname.size() - spos == 8)
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{
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// Old layout
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r = sscanf(dirname.substr(spos).c_str(), "%4x%4x", &x, &y);
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}
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else if(dirname.size() - spos == 3)
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{
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// New layout
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r = sscanf(dirname.substr(spos-4).c_str(), "%3x/%3x", &x, &y);
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// Sign-extend the 12 bit values up to 16 bits...
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if(x&0x800) x|=0xF000;
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if(y&0x800) y|=0xF000;
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}
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else
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{
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assert(false);
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}
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assert(r == 2);
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v2s16 pos((s16)x, (s16)y);
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return pos;
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}
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@ -5106,7 +5129,7 @@ void ServerMap::saveMapMeta()
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<<"seed="<<m_seed<<", chunksize="<<m_chunksize
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<<std::endl;
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createDir(m_savedir);
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createDirs(m_savedir);
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std::string fullpath = m_savedir + "/map_meta.txt";
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std::ofstream os(fullpath.c_str(), std::ios_base::binary);
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@ -5179,7 +5202,7 @@ void ServerMap::saveChunkMeta()
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dstream<<"INFO: ServerMap::saveChunkMeta(): Saving metadata of "
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<<count<<" chunks"<<std::endl;
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createDir(m_savedir);
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createDirs(m_savedir);
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std::string fullpath = m_savedir + "/chunk_meta";
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std::ofstream os(fullpath.c_str(), std::ios_base::binary);
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@ -5267,10 +5290,8 @@ void ServerMap::saveSectorMeta(ServerMapSector *sector)
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u8 version = SER_FMT_VER_HIGHEST;
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// Get destination
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v2s16 pos = sector->getPos();
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createDir(m_savedir);
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createDir(m_savedir+"/sectors");
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std::string dir = getSectorDir(pos);
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createDir(dir);
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createDirs(dir);
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std::string fullpath = dir + "/meta";
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std::ofstream o(fullpath.c_str(), std::ios_base::binary);
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@ -5282,22 +5303,21 @@ void ServerMap::saveSectorMeta(ServerMapSector *sector)
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sector->differs_from_disk = false;
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}
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MapSector* ServerMap::loadSectorMeta(std::string dirname)
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MapSector* ServerMap::loadSectorMeta(std::string sectordir, bool save_after_load)
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{
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DSTACK(__FUNCTION_NAME);
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// Get destination
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v2s16 p2d = getSectorPos(dirname);
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std::string dir = m_savedir + "/sectors/" + dirname;
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v2s16 p2d = getSectorPos(sectordir);
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ServerMapSector *sector = NULL;
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std::string fullpath = dir + "/meta";
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std::string fullpath = sectordir + "/meta";
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std::ifstream is(fullpath.c_str(), std::ios_base::binary);
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if(is.good() == false)
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{
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// If the directory exists anyway, it probably is in some old
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// format. Just go ahead and create the sector.
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if(fs::PathExists(dir))
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if(fs::PathExists(sectordir))
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{
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dstream<<"ServerMap::loadSectorMeta(): Sector metafile "
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<<fullpath<<" doesn't exist but directory does."
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@ -5307,12 +5327,16 @@ MapSector* ServerMap::loadSectorMeta(std::string dirname)
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m_sectors.insert(p2d, sector);
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}
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else
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{
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throw FileNotGoodException("Cannot open sector metafile");
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}
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}
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else
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{
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sector = ServerMapSector::deSerialize
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(is, this, p2d, m_sectors);
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if(save_after_load)
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saveSectorMeta(sector);
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}
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sector->differs_from_disk = false;
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@ -5323,14 +5347,31 @@ MapSector* ServerMap::loadSectorMeta(std::string dirname)
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bool ServerMap::loadSectorFull(v2s16 p2d)
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{
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DSTACK(__FUNCTION_NAME);
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std::string sectorsubdir = getSectorSubDir(p2d);
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MapSector *sector = NULL;
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// The directory layout we're going to load from.
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// 1 - original sectors/xxxxzzzz/
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// 2 - new sectors2/xxx/zzz/
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// If we load from anything but the latest structure, we will
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// immediately save to the new one, and remove the old.
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int loadlayout = 1;
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std::string sectordir1 = getSectorDir(p2d, 1);
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std::string sectordir;
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if(fs::PathExists(sectordir1))
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{
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sectordir = sectordir1;
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}
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else
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{
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loadlayout = 2;
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sectordir = getSectorDir(p2d, 2);
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}
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//JMutexAutoLock lock(m_sector_mutex); // Bulk comment-out
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try{
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sector = loadSectorMeta(sectorsubdir);
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sector = loadSectorMeta(sectordir, loadlayout != 2);
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}
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catch(InvalidFilenameException &e)
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{
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@ -5349,7 +5390,7 @@ bool ServerMap::loadSectorFull(v2s16 p2d)
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Load blocks
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*/
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std::vector<fs::DirListNode> list2 = fs::GetDirListing
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(m_savedir+"/sectors/"+sectorsubdir);
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(sectordir);
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std::vector<fs::DirListNode>::iterator i2;
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for(i2=list2.begin(); i2!=list2.end(); i2++)
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{
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@ -5357,16 +5398,25 @@ bool ServerMap::loadSectorFull(v2s16 p2d)
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if(i2->dir)
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continue;
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try{
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loadBlock(sectorsubdir, i2->name, sector);
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loadBlock(sectordir, i2->name, sector, loadlayout != 2);
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}
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catch(InvalidFilenameException &e)
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{
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// This catches unknown crap in directory
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}
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}
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if(loadlayout != 2)
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{
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dstream<<"Sector converted to new layout - deleting "<<
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sectordir1<<std::endl;
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fs::RecursiveDelete(sectordir1);
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}
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return true;
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}
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void ServerMap::saveBlock(MapBlock *block)
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{
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DSTACK(__FUNCTION_NAME);
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@ -5386,12 +5436,9 @@ void ServerMap::saveBlock(MapBlock *block)
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// Get destination
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v3s16 p3d = block->getPos();
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v2s16 p2d(p3d.X, p3d.Z);
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createDir(m_savedir);
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createDir(m_savedir+"/sectors");
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std::string dir = getSectorDir(p2d);
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createDir(dir);
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createDirs(dir);
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// Block file is map/sectors/xxxxxxxx/xxxx
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char cc[5];
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snprintf(cc, 5, "%.4x", (unsigned int)p3d.Y&0xffff);
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std::string fullpath = dir + "/" + cc;
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@ -5427,12 +5474,11 @@ void ServerMap::saveBlock(MapBlock *block)
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block->resetChangedFlag();
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}
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void ServerMap::loadBlock(std::string sectordir, std::string blockfile, MapSector *sector)
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void ServerMap::loadBlock(std::string sectordir, std::string blockfile, MapSector *sector, bool save_after_load)
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{
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DSTACK(__FUNCTION_NAME);
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// Block file is map/sectors/xxxxxxxx/xxxx
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std::string fullpath = m_savedir+"/sectors/"+sectordir+"/"+blockfile;
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std::string fullpath = sectordir+"/"+blockfile;
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try{
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std::ifstream is(fullpath.c_str(), std::ios_base::binary);
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@ -5496,7 +5542,7 @@ void ServerMap::loadBlock(std::string sectordir, std::string blockfile, MapSecto
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*/
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// Save old format blocks in new format
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if(version < SER_FMT_VER_HIGHEST)
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if(version < SER_FMT_VER_HIGHEST || save_after_load)
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{
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saveBlock(block);
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}
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12
src/map.h
12
src/map.h
@ -545,13 +545,9 @@ public:
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Misc. helper functions for fiddling with directory and file
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names when saving
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*/
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void createDir(std::string path);
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void createSaveDir();
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// returns something like "xxxxxxxx"
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std::string getSectorSubDir(v2s16 pos);
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void createDirs(std::string path);
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// returns something like "map/sectors/xxxxxxxx"
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std::string getSectorDir(v2s16 pos);
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std::string createSectorDir(v2s16 pos);
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std::string getSectorDir(v2s16 pos, int layout = 2);
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// dirname: final directory name
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v2s16 getSectorPos(std::string dirname);
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v3s16 getBlockPos(std::string sectordir, std::string blockfile);
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@ -572,7 +568,7 @@ public:
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// (no MapBlocks)
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// DEPRECATED? Sectors have no metadata anymore.
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void saveSectorMeta(ServerMapSector *sector);
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MapSector* loadSectorMeta(std::string dirname);
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MapSector* loadSectorMeta(std::string dirname, bool save_after_load);
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// Full load of a sector including all blocks.
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// returns true on success, false on failure.
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@ -583,7 +579,7 @@ public:
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void saveBlock(MapBlock *block);
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// This will generate a sector with getSector if not found.
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void loadBlock(std::string sectordir, std::string blockfile, MapSector *sector);
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void loadBlock(std::string sectordir, std::string blockfile, MapSector *sector, bool save_after_load=false);
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// For debug printing
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virtual void PrintInfo(std::ostream &out);
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