root/trunk/client/revimage/compress_vol.template

void compress_vol(FILE *fi,unsigned char *nameprefix,PARAMS *p)
{
        int i,j,k,nb;
        IMAGE_HEADER header;
        COMPRESS *c;
        unsigned char buffer[TOTALLG],*ptr,*dataptr;
        unsigned long remaining,used,skip;
        unsigned short lg,datalg;
        FILE *fo;
        unsigned char filename[128],firststring[200];
 
        printf("Compressing Image :\n");
 
        printf("- Bitmap lg    : %ld\n",p->bitmaplg);
        printf("- Nb of blocks : %d\n",nb=((p->bitmaplg+ALLOCLG-1)/ALLOCLG));
 
        remaining=p->bitmaplg;
        ptr=p->bitmap;
 
        skip=0;
 
        sprintf(firststring,"NTFS=1\nTYPE=%d\nSECTORS=%lld\nBLOCKS=%d\n",type,p->boot.sectors,nb);
 
        for (i=0;i<nb;i++)
        {
                used=0;
 
                printf("- Block %d : O",i+1);
 
                sprintf(filename,"%s%03d",nameprefix,i);
                fo=fopen(filename,"wb");
 
                printf("H");
 
                if (remaining>ALLOCLG) lg=ALLOCLG;
                                else   lg=remaining;
 
                bzero(header.header,HEADERLG);
                sprintf(header.header,"%sALLOCTABLELG=%d\n",firststring,lg);
                firststring[0]=0;
                bzero(header.bitmap,ALLOCLG);
                memcpy(header.bitmap,ptr,lg);
 
                remaining-=lg;
                ptr+=lg;
 
                compress_init(&c);
                compress_data(c,(unsigned char *)&header,TOTALLG,fo,0);
 
                printf("D");
                dataptr=buffer;
                datalg=0;
 
                for(j=0;j<lg;j++)
                 {
                  printf("%3d\b\b\b",(100*j)/lg);
 
                  for(k=1;k<256;k+=k)
                   {
                    if (!(header.bitmap[j]&k))
                         {skip+=512; if (skip>30*1024*1024) {fseek(fi,skip,SEEK_CUR);skip=0;}}
                    else {
                            if (skip) fseek(fi,skip,SEEK_CUR);
                            fread(dataptr,512,1,fi);
                            skip=0; dataptr+=512; datalg+=512; used++;
 
                            if (datalg==TOTALLG)
                                    { compress_data(c,buffer,TOTALLG,fo,0);
                                      dataptr=buffer;
                                      datalg=0;}
                                    }
                         }
                   }
 
                printf("F");
 
                if (datalg>0) compress_data(c,buffer,datalg,fo,1);
 
                printf("C");
 
                compress_end(c,fo);
                fclose(fo);
 
                printf(". (used : %ld)\n",used);
        }
}