int main(void)
{
herr_t err; /* Return value from function calls */
hid_t fileID; /* HDF5 identifier for file */
hsize_t count; /* Number of records in table */
int x; /* Temporary counter variable */
/* Buffers to hold data */
int readBuffer[5];
int writeBuffer[5];
/* Initialize buffers */
for(x=0; x<5; x++)
{
writeBuffer[x]=x;
readBuffer[x] = -1;
}
/* Create a new HDF5 file */
fileID = H5Fcreate("PTcppexampleFL.h5", H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
if(fileID <0)
fprintf(stderr, "Couldn't create file.\n");
/* Create a fixed-length packet table with compression level 5. */
FL_PacketTable ptable(fileID, "/examplePacketTable", H5T_NATIVE_INT, 100, 5);
if(! ptable.IsValid())
fprintf(stderr, "Unable to create packet table.");
/* Append five packets to the packet table, one at a time */
for(x=0; x<5; x++)
{
err = ptable.AppendPacket( &(writeBuffer[x]) );
if(err<0)
fprintf(stderr, "Error adding record.");
}
/* Get the number of packets in the packet table. This should be five. */
count = ptable.GetPacketCount(err);
if(err < 0)
fprintf(stderr, "Error getting packet count.");
printf("Number of packets in packet table after five appends: %d\n", count);
/* Initialize packet table's "current record" */
ptable.ResetIndex();
/* Iterate through packets, read each one back */
for(x=0; x<5; x++)
{
err = ptable.GetNextPacket( &(readBuffer[x]) );
if(err < 0)
fprintf(stderr, "Error reading record.");
printf("Packet %d's value is %d.\n", x, readBuffer[x]);
}
/* The packet table will close automatically when its object goes */
/* out of scope. */
err = H5Fclose(fileID);
if( err < 0 )
fprintf(stderr, "Failed to close file.\n");
return 0;
}
int main(void)
{
#ifdef VLPT_REMOVED
herr_t err; /* Return value from function calls */
hid_t fileID; /* HDF5 identifier for file */
hsize_t count; /* Number of records in table */
int x; /* Loop variable */
/* This example has two different sizes of "record": longs and shorts */
long longBuffer[5];
short shortBuffer[5];
/* Buffer of hvl_t structs to read back records */
hvl_t readBuffer[5];
/* Initialize buffers */
for(x=0; x<5; x++)
{
longBuffer[x] = -x;
shortBuffer[x] = x;
}
/* Create a new HDF5 file */
fileID = H5Fcreate("PTcppexampleVL.h5", H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
if(fileID <0)
fprintf(stderr, "Couldn't create file.\n");
/* Create a variable-length packet table. */
VL_PacketTable ptable(fileID, "/examplePacketTable", 1);
if(! ptable.IsValid())
fprintf(stderr, "Unable to create packet table.");
/* Append five packets to the packet table. */
/* In C++, there is no need to package data into hvl_t structs. */
err = ptable.AppendPacket( &(longBuffer[0]), sizeof(long));
if(err < 0)
fprintf(stderr, "Error adding record.");
err = ptable.AppendPacket( &(shortBuffer[1]), sizeof(short));
if(err < 0)
fprintf(stderr, "Error adding record.");
err = ptable.AppendPacket( &(longBuffer[2]), sizeof(long));
if(err < 0)
fprintf(stderr, "Error adding record.");
err = ptable.AppendPacket( &(longBuffer[3]), sizeof(long));
if(err < 0)
fprintf(stderr, "Error adding record.");
err = ptable.AppendPacket( &(shortBuffer[4]), sizeof(short));
if(err < 0)
fprintf(stderr, "Error adding record.");
/* Get the number of packets in the packet table. This should be five. */
count = ptable.GetPacketCount(err);
if(err < 0)
fprintf(stderr, "Error getting packet count.");
printf("Number of packets in packet table after five appends: %d\n", count);
/* Initialize packet table's "current record" */
ptable.ResetIndex();
/* Iterate through packets, read each one back */
for(x=0; x<5; x++)
{
err = ptable.GetNextPacket( &(readBuffer[x]) );
if(err < 0)
fprintf(stderr, "Error reading record.");
printf("Packet %d's length is %d.\n", x, readBuffer[x].len);
if(readBuffer[x].len == sizeof(long))
printf("Packet %d's value is %d.\n", x, *((long *) readBuffer[x].p) );
else
printf("Packet %d's value is %d.\n", x, *((short *) readBuffer[x].p) );
}
/* The packet table will close automatically when its object goes */
/* out of scope. */
err = H5Fclose(fileID);
if( err < 0 )
fprintf(stderr, "Failed to close file.\n");
#endif /* VLPT_REMOVED */
return 0;
}
