#include "zerogrouping/zerogrouping.h"
#include "statichuff/statichuff.h"
#include "vfile/vfile.h"
+#include "vfile/common.h"
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
+long get_file_size(const char* filename);
+
int main(int argc, char* argv[])
{
int cflag = 0;
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;
-
- case 'p': pflag = 1;
- pagesize = atoi(optarg);
- break;
+ volumesize = atol(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);
}
/* Comprimo */
/* No me gusta el tmpfile ... es para probar como anda todo junto */
FILE *fp, *fp_out;
- unsigned long int i, j, total, k;
+ Uint32 i, j, total, k;
char *mtf;
char *salida, *data, c;
+ char *z;
+ int z_len;
+
data = malloc(sizeof(char)*pagesize);
/* Reservo lugar tambien para guardar el k y el tamaño */
- salida = malloc(sizeof(char)*(pagesize)+sizeof(unsigned long int)*2);
+ salida = malloc(sizeof(char)*(pagesize)+sizeof(Uint32)*2);
bs = bs_create(pagesize);
fp = fopen(argv[optind], "rb");
bs_solve(data, salida, bs, &k, i);
/* Le aplico el MTF, salteo el tamaño del bloque para que no se pierda. */
- mtf = jacu_mtf(salida+sizeof(unsigned long int), i+sizeof(unsigned long int));
+ mtf = jacu_mtf(salida+sizeof(Uint32), i+sizeof(Uint32), &z, &z_len);
/* Si me lo piden, aplico ZG. */
- if (zflag)
- {
+ if (zflag) {
size_t len;
char buff[2];
ZG zg;
zg_init(&zg);
+ /* TODO HACER LO MISMO QUE EN EL ELSE XXX */
for (j = 0; j < i; ++j)
if ((len = zg_group(&zg, buff, mtf[j]))) fwrite(buff, 1, len, fp_out);
- }
- else
- {
- for(j=0; j<i; j++)
+ } else {
+ /* Guardo el PageSize */
+ //for(j=0; j<sizeof(Uint32); j++)
+ // fputc(mtf[j], fp_out);
+ fwrite(mtf, 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++)
fputc(mtf[j], fp_out);
}
free(mtf);
+ free(z);
}
/* Limpiando */
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]));
return i;
}
if (dflag == 1) {
/* Descomprimo */
FILE *fp_out;
- VFILE *fp_in;
- unsigned long int block_size, k;
+ FILE *fp_in;
+ Uint32 block_size, k;
char *block, *mtf, *orig;
- int *pos;
+ char *z;
+ int z_len;
shuff_decode_file(argv[optind], "tmp.comp"); /*argv[optind+1]);*/
- fp_in = vfopen("tmp.comp", "r", 0);
+ fp_in = fopen("tmp.comp", "rb");
fp_out = fopen(argv[optind+1], "wb");
- while (!vfeof(fp_in)) {
+ while (!feof(fp_in)) {
block_size = 0;
- vfread(&block_size, sizeof(unsigned long int), 1, fp_in);
+ 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) {
- block = malloc((block_size+sizeof(unsigned long int))*sizeof(char));
+ block = malloc(block_size*sizeof(char)+sizeof(Uint32));
orig = malloc(block_size*sizeof(char));
- vfread(block, block_size, sizeof(char), fp_in);
+ fread(block, block_size, sizeof(char), fp_in);
- mtf = jacu_mtf_inv(block, /*XXX NO LO TENGO XXX */pos, block_size);
+ /* Hago el MTF inverso */
+ mtf = jacu_mtf_inv(z, block, block_size);
- memcpy(&k, block, sizeof(unsigned long int));
+ /* Luego de hacer el MTF inverso ya puedo recuperar el k */
+ memcpy(&k, block, sizeof(Uint32));
- bs_restore(orig, block+sizeof(unsigned long int), k, block_size);
+ bs_restore(orig, block+sizeof(Uint32), k, block_size);
fwrite(orig, block_size, sizeof(char), fp_out);
free(block);
free(mtf);
}
}
- vfclose(fp_in);
+ fclose(fp_in);
fclose(fp_out);
}
return 0;
}
+
+long get_file_size(const char* filename)
+{
+ FILE* file;
+ long file_size;
+
+ if (!(file = fopen(filename, "ab"))) return -1;
+ file_size = ftell(file);
+ fclose(file);
+ return file_size;
+}
+
projects / z.facultad / 75.06 / jacu.git / blobdiff