Function adfWriteFile

dep/adflib/src/adf_file.c:473–518

* adfWriteFile * */

 *
 */
int32_t adfWriteFile(struct File *file, int32_t n, uint8_t *buffer)
{
    int32_t bytesWritten;
    uint8_t *dataPtr, *bufPtr;
    int size, blockSize;
    struct bOFSDataBlock *dataB;
    
    bytesWritten = 0;
    if (n==0) return (n);
/*puts("adfWriteFile");*/
    blockSize = file->volume->datablockSize;
    if (isOFS(file->volume->dosType)) {
        dataB =(struct bOFSDataBlock *)file->currentData;
        dataPtr = dataB->data;
    }
    else
        dataPtr = file->currentData;

    if (file->pos==0 || file->posInDataBlk==blockSize) {
        if (adfCreateNextFileBlock(file)==-1) {
            /* bug found by Rikard */
            (*adfEnv.wFct)("adfWritefile : no more free sector availbale");                        
            return bytesWritten;
        }
        file->posInDataBlk = 0;
    }

    bytesWritten = 0; bufPtr = buffer;
    while( bytesWritten<n ) {
        size = min(n-bytesWritten, blockSize-file->posInDataBlk);
        memcpy(dataPtr+file->posInDataBlk, bufPtr, size);
        bufPtr += size;
        file->pos += size;
        bytesWritten += size;
        file->posInDataBlk += size;
        if (file->posInDataBlk==blockSize && bytesWritten<n) {
            if (adfCreateNextFileBlock(file)==-1) {
                /* bug found by Rikard */
                (*adfEnv.wFct)("adfWritefile : no more free sector availbale");                        
                return bytesWritten;
            }
            file->posInDataBlk = 0;
        }
    }
    return( bytesWritten );
}


/*