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[phys/latlib.git] / configcache.cpp

diff --git a/configcache.cpp b/configcache.cpp
index 3d160a98ad8f22863daae9f1c7ada67c48e2c5e2..f00e187b26a339825256e09dde80257dda123b2f 100644 (file)
--- a/configcache.cpp
+++ b/configcache.cpp
@@ -5,7 +5,10 @@
 #include <time.h>
 #include <dirent.h>
 
-configcache::configcache(const string& cacheid, const int& nequi, const int& nskip, const string& datadir, char **configmem, const int& configMemSize, const int& cachemode){
+configcache::configcache(const string& cacheid, const int& nequi, const int& nskip, const string& datadir, char **configmem, const int& configMemSize, const int& cachemode,
+                        writeout *out_a){
+  out = out_a;
+
   NEQUI = nequi;
   NSKIP = nskip;
   DATADIR = datadir;
@@ -102,11 +105,23 @@ bool configcache::readConfig()
 
       while( (!inFile.is_open()) && inFiles.size() > 0 )
        {
+         if(out) *out->log << "CCACHE: Opening dat-file: " << inFiles.back() << endl << flush;
+
          inFile.open( (DATADIR + "/" + inFiles.back()).c_str(), std::ios::binary );
          inFiles.pop_back();
 
          if( !inFile.is_open() ) continue;
 
+         std::streampos fsize = inFile.tellg();
+          inFile.seekg( 0, std::ios::end );
+          fsize = inFile.tellg() - fsize;
+         if( (int)fsize == 0 ) {
+           *out->log << "CCACHE: dat-file has zero length! Skipping." << endl << flush;
+           inFile.close();
+           continue;
+         }
+         inFile.seekg(0);
+
          inBuffer = new boost::iostreams::filtering_istreambuf;
          inBuffer->push( boost::iostreams::bzip2_decompressor() );
          inBuffer->push(inFile);
@@ -114,12 +129,19 @@ bool configcache::readConfig()
 
       if( inFile.is_open() ) 
        {
-         if( boost::iostreams::read(*inBuffer, tmpConfig, configSize) == configSize )
+         int readturn = -1;
+         try { readturn = boost::iostreams::read(*inBuffer, tmpConfig, configSize); }
+         catch (std::exception const& ex) {
+           if(out) *out->log << "CCACHE: Caught exception: " << ex.what() << endl << flush;
+           inFile.close();
+         }
+         
+         if( readturn == configSize && inFile.is_open() )
            {
              memcpy(configMem, tmpConfig, configSize);
              return true;
            }
-         else inFile.close();
+         else inFile.close(); 
        }
     }
 }