Ok, I rearranged some things, we have a tools dir now, those build by default.

Also I added a bunch of classes that I've been tinkering with that are almost
ready for use, so I figured I may as well throw them in here.

1 files changed, 241 insertions, 0 deletions

diff --git a/src/tools/nidstool.cpp b/src/tools/nidstool.cpp
new file mode 100644
index 0000000..d1465ce
--- /dev/null
+++ b/src/tools/nidstool.cpp
@@ -0,0 +1,241 @@
+#include "bu/file.h"
+#include "bu/nids.h"
+#include "bu/nidsstream.h"
+#include "bu/paramproc.h"
+
+#include <stdlib.h>
+
+typedef struct Block
+{
+        uint32_t uFirstBlock;
+        uint32_t uNextBlock;
+        uint32_t uBytesUsed;
+} Block;
+
+class Param : public Bu::ParamProc
+{
+public:
+        Param( int argc, char *argv[] )
+        {
+                addHelpBanner("nidstool - Do stuff with nids files.\n\n");
+                addParam("info", 'i', mkproc(Param::procInfo),
+                        "Print some info about the file.");
+                addParam("dump", 'd', mkproc(Param::procDump),
+                        "Dump a stream to a file.");
+                addParam("analyze", 'a', mkproc(Param::procAnalyze),
+                        "Analyze a nids file.");
+                addParam("copy", 'c', mkproc(Param::procCopy),
+                        "Copy a nids file, changing settings.");
+                addParam("help", 'h', mkproc(Bu::ParamProc::help), "This help.");
+                process( argc, argv );
+        }
+
+        virtual ~Param()
+        {
+        }
+
+        void printInfo( Bu::Nids &n )
+        {
+                printf("File info:\n");
+                printf("  Header overhead: %db\n", n.getBlockStart() );
+                printf("  Block size:      %db\n", n.getBlockSize() );
+                printf("  Block count:     %d\n", n.getNumBlocks() );
+                printf("  Blocks used:     %d (%d%%)\n", n.getNumUsedBlocks(),
+                        n.getNumUsedBlocks()*100/n.getNumBlocks() );
+                printf("  Block overhead:  %db\n", n.getBlockOverhead() );
+                printf("  Block storage:   %db (%d%%)\n",
+                        n.getBlockSize()-n.getBlockOverhead(),
+                        (n.getBlockSize()-n.getBlockOverhead())*100/n.getBlockSize() );
+        }
+
+        int procInfo( int argc, char *argv[] )
+        {
+                if( argc < 1 )
+                {
+                        printf("You must provide a file name.\n");
+                        exit( 1 );
+                }
+
+                Bu::File fIn( argv[0], Bu::File::Read );
+                Bu::Nids n( fIn );
+                n.initialize();
+
+                printInfo( n );
+
+                if( argc >= 2 )
+                {
+                        uint32_t uStream = strtoul( argv[1], NULL, 0 );
+                        uint32_t uBlock = uStream;
+
+                        Block b;
+
+                        for(;;)
+                        {
+                                fIn.setPos( n.getBlockStart()+n.getBlockSize()*uBlock );
+                                fIn.read( &b, sizeof(Block) );
+                                printf("Stream %u:  block %u, next %u, %ub used.\n",
+                                        uStream, uBlock, b.uNextBlock, b.uBytesUsed
+                                        );
+                                if( b.uNextBlock == 0xFFFFFFFFUL )
+                                        break;
+                                uBlock = b.uNextBlock;
+                        }
+                        printf("Stream End.\n");
+
+                        return 2;
+                }
+
+                return 1;
+        }
+
+        int procDump( int argc, char *argv[] )
+        {
+                if( argc < 3 )
+                {
+                        printf("You must provide a nids file, a stream id, and an output "
+                                "file.\n");
+                        exit( 1 );
+                }
+
+                Bu::File fIn( argv[0], Bu::File::Read );
+                Bu::Nids n( fIn );
+                n.initialize();
+
+                int iStream = strtol( argv[1], NULL, 0 );
+                Bu::NidsStream sIn = n.openStream( iStream );
+
+                Bu::File fOut( argv[2], Bu::File::Write|Bu::File::Create );
+                int iTotal = 0;
+                char buf[100];
+                for(;;)
+                {
+                        int iRead = sIn.read( buf, 100 );
+                        iTotal += fOut.write( buf, iRead );
+                        if( iRead < 100 )
+                                break;
+                }
+
+                printf("Wrote %db from stream %d in %s to %s.\n",
+                        iTotal, iStream, argv[0], argv[2] );
+                return 3;
+        }
+
+        int procAnalyze( int argc, char *argv[] )
+        {
+                if( argc < 1 )
+                {
+                        printf("You must provide a file name.\n");
+                        exit( 1 );
+                }
+
+                Bu::File fIn( argv[0], Bu::File::Read );
+                Bu::Nids n( fIn );
+                n.initialize();
+
+                printInfo( n );
+
+                int iStreamCnt = 0;
+                int iStreamTotal = 0;
+                int iOneBlock = 0;
+                uint32_t iLargest = 0;
+                uint32_t iSmallest = 0;
+                int iWaste = 0;
+                int iUsable = n.getBlockSize()-n.getBlockOverhead();
+                Block b;
+                for( int j = 0; j < n.getNumBlocks(); j++ )
+                {
+                        fIn.setPos( n.getBlockStart()+n.getBlockSize()*j );
+                        fIn.read( &b, sizeof(Block) );
+                        if( b.uFirstBlock != (uint32_t)j )
+                                continue;
+                        
+                        iStreamCnt++;
+                        iStreamTotal += b.uBytesUsed;
+
+                        if( b.uNextBlock == 0xFFFFFFFFUL )
+                        {
+                                iOneBlock++;
+                                iWaste += iUsable - b.uBytesUsed;
+                        }
+                        else
+                        {
+                                iWaste += iUsable - (b.uBytesUsed%iUsable);
+                        }
+                        
+                        if( j == 0 )
+                        {
+                                iSmallest = iLargest = b.uBytesUsed;
+                        }
+                        else
+                        {
+                                if( iLargest < b.uBytesUsed )
+                                        iLargest = b.uBytesUsed;
+                                if( iSmallest > b.uBytesUsed )
+                                        iSmallest = b.uBytesUsed;
+                        }
+                }
+                printf("Steam analysis:\n");
+                printf("  Stream count:          %d\n", iStreamCnt );
+                printf("  Stream size:           %db/%db/%db (min/avr/max)\n",
+                        iSmallest, iStreamTotal/iStreamCnt, iLargest );
+                printf("  One-block streams:     %d (%d%%)\n",
+                        iOneBlock, iOneBlock*100/iStreamCnt );
+                printf("  Total wasted space:    %db (%d%%)\n",
+                        iWaste, iWaste*100/iStreamTotal );
+                printf("  Avr blocks-per-stream: %f%%\n",
+                        (float)n.getNumBlocks()/(float)iStreamCnt );
+
+                return 1;
+        }
+
+        int procCopy( int argc, char *argv[] )
+        {
+                if( argc < 3 )
+                {
+                        printf("You must provide source stream, blocksize, destination.\n");
+                        exit( 1 );
+                }
+
+                Bu::File fIn( argv[0], Bu::File::Read );
+                Bu::Nids nIn( fIn );
+                nIn.initialize();
+
+                Bu::File fOut( argv[2], Bu::File::Read|Bu::File::Write|Bu::File::Create|
+                                Bu::File::Truncate );
+                Bu::Nids nOut( fOut );
+                nOut.initialize( strtol( argv[1], 0, NULL ) );
+
+                Block b;
+                for( int j = 0; j < nIn.getNumBlocks(); j++ )
+                {
+                        fIn.setPos( nIn.getBlockStart()+nIn.getBlockSize()*j );
+                        fIn.read( &b, sizeof(Block) );
+                        if( b.uFirstBlock != (uint32_t)j )
+                                continue;
+
+                        Bu::NidsStream sIn = nIn.openStream( j );
+                        int iNew = nOut.createStream();
+                        Bu::NidsStream sOut = nOut.openStream( iNew );
+
+                        char buf[1024];
+                        for(;;)
+                        {
+                                int iRead = sIn.read( buf, 1024 );
+                                sOut.write( buf, iRead );
+                                if( iRead < 1024 )
+                                        break;
+                        }
+                }
+
+                return 3;
+        }
+};
+
+
+int main( int argc, char *argv[] )
+{
+        Param p( argc, argv );
+
+        return 0;
+}
+