LONGBOW_TEST_CASE(Object, parcRandomAccessFile_Seek)
{
char *fname = "tmpfile";
PARCFile *file = parcFile_Create(fname);
parcFile_CreateNewFile(file);
FILE *fp = fopen(fname, "w");
fseek(fp, 0, SEEK_SET);
uint8_t data[128];
for (int i = 0; i < 128; i++) {
data[i] = i;
}
fwrite(data, 1, 128, fp);
fclose(fp);
PARCRandomAccessFile *instance = parcRandomAccessFile_Open(file);
PARCBuffer *buffer = parcBuffer_Allocate(128);
parcRandomAccessFile_Seek(instance, 64, PARCRandomAccessFilePosition_Start);
size_t numBytes = parcRandomAccessFile_Read(instance, buffer);
assertTrue(numBytes == 64, "Expected 64 bytes to be read, but got %zu", numBytes);
parcRandomAccessFile_Seek(instance, 0, PARCRandomAccessFilePosition_End);
parcBuffer_Flip(buffer);
numBytes = parcRandomAccessFile_Read(instance, buffer);
assertTrue(numBytes == 0, "Expected 0 bytes to be read, but got %zu", numBytes);
parcRandomAccessFile_Seek(instance, 0, PARCRandomAccessFilePosition_Start);
parcBuffer_Flip(buffer);
numBytes = parcRandomAccessFile_Read(instance, buffer);
assertTrue(numBytes == 128, "Expected 128 bytes to be read, but got %zu", numBytes);
parcBuffer_Release(&buffer);
parcRandomAccessFile_Close(instance);
parcRandomAccessFile_Release(&instance);
parcFile_Release(&file);
}
/**
* Write the input buffer to the specified file.
*
* @param [in] outFile Name of the file to which the buffer will be written.
* @param [in] data A `PARCBuffer` instance which stores the data to be written.
*/
static void
_ccnxFileRepoClient_AppendBufferToFile(char *outFile, PARCBuffer *data, size_t offset)
{
PARCFile *out = parcFile_Create(outFile);
parcFile_CreateNewFile(out);
PARCRandomAccessFile *fout = parcRandomAccessFile_Open(out);
parcRandomAccessFile_Seek(fout, offset, PARCRandomAccessFilePosition_Start);
parcRandomAccessFile_Write(fout, data);
parcRandomAccessFile_Close(fout);
parcRandomAccessFile_Release(&fout);
parcFile_Release(&out);
}
static void *
_parcChunker_NextFromBuffer(PARCFileChunker *chunker, _ChunkerState *state)
{
size_t chunkSize = state->nextChunkSize;
parcRandomAccessFile_Seek(chunker->fhandle, state->position, PARCRandomAccessFilePosition_Start);
PARCBuffer *slice = parcBuffer_Allocate(chunkSize);
parcRandomAccessFile_Read(chunker->fhandle, slice);
slice = parcBuffer_Flip(slice);
_advanceState(chunker, state);
return slice;
}
