int dflag = 0;
int zflag = 0;
int tflag = 0;
- int pflag = 0;
+ int qflag = 0;
long int volumesize = 0;
size_t pagesize = 32768; /* 32KB */
int ch;
t_BlockSort *bs;
- while ((ch = getopt(argc, argv, "cdzt:p:")) != -1) {
+ while ((ch = getopt(argc, argv, "cdzt:q:")) != -1) {
switch (ch) {
case 'c': cflag = 1;
break;
case 't': tflag = 1;
- volumesize = atol(optarg);
- break;
+ volumesize = atol(optarg);
+ break;
- case 'p': pflag = 1;
- pagesize = atoi(optarg);
- break;
+ case 'q': qflag = 1;
+ switch (atoi(optarg))
+ {
+ case 0: pagesize = 1024; /* 1K */
+ break;
+ case 1: pagesize = 2048; /* 2K */
+ break;
+ case 2: pagesize = 4096; /* 4K */
+ break;
+ case 3: pagesize = 8192; /* 8K */
+ break;
+ case 4: pagesize = 16384; /* 16K */
+ break;
+ case 5: pagesize = 32768; /* 32K */
+ break;
+ case 6: pagesize = 65536; /* 64K */
+ break;
+ case 7: pagesize = 131072; /* 128K */
+ break;
+ case 8: pagesize = 262144; /* 256K */
+ break;
+ case 9: pagesize = 524288; /* 512K */
+ break;
+ default: pagesize = 0; /* error */
+ }
+ break;
default: fprintf(stderr, "Usage: %s [-cdpt] sourcefile targetfile\n", argv[0]);
return(2);
fprintf(stderr,"Error: The volume size must be a non-zero value\n");
return (4);
}
- if ((pflag) && (pagesize <= 1u)) {
- fprintf(stderr,"Error: El tamaño de página debe ser mayor a 1 byte.\n");
+ if ((qflag) && (pagesize <= 1u)) {
+ fprintf(stderr,"Error: El nivel de compresión debe ser entre 0 (menor) y 9 (mayor).\n");
return (5);
}
data = malloc(sizeof(char)*pagesize);
/* Reservo lugar tambien para guardar el k y el tamaño */
- salida = malloc(sizeof(char)*(pagesize)+sizeof(Uint32)*2);
+ salida = malloc(sizeof(char)*pagesize+sizeof(Uint32)*2);
bs = bs_create(pagesize);
fp = fopen(argv[optind], "rb");
fp_out = fopen("tmp.comp", "wb");
- c = fgetc(fp);
+ /*c = fgetc(fp);*/
total = 0;
while (!feof(fp)) {
i = 0;
while ((!feof(fp)) && (i < pagesize)) {
- data[i++] = c;
- c = fgetc(fp);
+ data[i++] = fgetc(fp);
total++;
}
+ /* Saco un EOF que lee de mas */
+ if (i<pagesize) i--;
+
/* Hago el BS */
bs_solve(data, salida, bs, &k, i);
+ /*printf("BS k=%ld\n", *(Uint32 *)(salida+sizeof(Uint32)));
+ printf("PageSize = %ld\n", *(Uint32 *)salida);
+
+ printf("Antes de MTF = %ld [", i);
+ {
+ int ii;
+ for(ii=0; ii<(i+sizeof(Uint32)); ii++)
+ printf("(%c)", salida[ii+sizeof(Uint32)]);
+ printf("]\n");
+ }*/
/* Le aplico el MTF, salteo el tamaño del bloque para que no se pierda. */
mtf = jacu_mtf(salida+sizeof(Uint32), i+sizeof(Uint32), &z, &z_len);
+/*
+ printf("MTF Z (len=%d) = [", z_len);
+ {
+ int ii;
+ for(ii=0; ii<z_len; ii++)
+ printf("(%c)", z[ii]);
+ printf("]\n");
+ }*/
/* Si me lo piden, aplico ZG. */
if (zflag) {
size_t len;
if ((len = zg_group(&zg, buff, mtf[j]))) fwrite(buff, 1, len, fp_out);
} else {
/* Guardo el PageSize */
- //for(j=0; j<sizeof(Uint32); j++)
- // fputc(mtf[j], fp_out);
- fwrite(mtf, sizeof(Uint32), 1, fp_out);
+ fwrite(salida, sizeof(Uint32), 1, fp_out);
/* Guardo el Z len y el Z */
fwrite(&z_len, sizeof(int), 1, fp_out);
fwrite(z, z_len, sizeof(char), fp_out);
/* Guardo la salida del MTF */
- for(j=sizeof(Uint32); j<i; j++)
+ /*printf("Despues de MTF : [");*/
+ for(j=0; j<(i+sizeof(Uint32)); j++) {
fputc(mtf[j], fp_out);
+ /* putchar('(');
+ fputc(mtf[j], stdout);
+ putchar(')');*/
+ }
+ /*printf("]\n");*/
}
free(mtf);
free(z);
}
+ printf("Total Bytes read = %ld\n", total);
/* Limpiando */
fclose(fp);
fclose(fp_out);
bs_destroy(bs);
/* Comprimo con huffman */
- i = shuff_encode_file("tmp.comp",argv[optind+1], volumesize);
+ i = shuff_encode_file("tmp.comp", argv[optind+1], volumesize);
/* borro el temporal */
- unlink("tmp.comp");
+ remove("tmp.comp");
/* Muestro bpb */
printf("Comprimido a %.04f bpb.\n", get_file_size(argv[optind+1])*8.0/get_file_size(argv[optind]));
while (!feof(fp_in)) {
block_size = 0;
- PERR("Leo bloque");
fread(&block_size, sizeof(Uint32), 1, fp_in);
- fread(&z_len, sizeof(int), 1, fp_in);
- z = malloc(sizeof(char)*z_len);
- fread(z, z_len, sizeof(char), fp_in);
-
if (block_size > 0) {
+ printf("PageSize = %ld\n", block_size);
+ fread(&z_len, sizeof(int), 1, fp_in);
+ z = malloc(sizeof(char)*z_len);
+ fread(z, z_len, sizeof(char), fp_in);
+
+ /*printf("MTF Z (len=%d) = [", z_len);
+ {
+ int ii;
+ for(ii=0; ii<z_len; ii++)
+ printf("(%c)", z[ii]);
+ printf("]\n");
+
+ }*/
+
block = malloc(block_size*sizeof(char)+sizeof(Uint32));
orig = malloc(block_size*sizeof(char));
- fread(block, block_size, sizeof(char), fp_in);
+ fread(block, block_size+sizeof(Uint32), sizeof(char), fp_in);
+ /*printf("Antes MTF_inv = [");
+ {
+ int ii;
+ for(ii=0; ii<block_size+sizeof(Uint32); ii++)
+ printf("(%c)", block[ii]);
+ printf("]\n");
+ }*/
/* Hago el MTF inverso */
- mtf = jacu_mtf_inv(z, block, block_size);
+ mtf = jacu_mtf_inv(z, block, block_size*sizeof(char)+sizeof(Uint32));
+
+ /*printf("Luego de MTF Inv= [");
+ {
+ int ii;
+ for(ii=0; ii<block_size+sizeof(Uint32); ii++)
+ printf("(%c)", mtf[ii]);
+ printf("]\n");
+ }*/
/* Luego de hacer el MTF inverso ya puedo recuperar el k */
- memcpy(&k, block, sizeof(Uint32));
+ memcpy(&k, mtf, sizeof(Uint32));
- bs_restore(orig, block+sizeof(Uint32), k, block_size);
+ /*printf("Restored : k=%ld\n", k);*/
+ bs_restore(orig, mtf+sizeof(Uint32), k, block_size);
fwrite(orig, block_size, sizeof(char), fp_out);
free(block);
projects / z.facultad / 75.06 / jacu.git / blobdiff