-#include "statichuff/statichuff.h"
#include "blocksorting/bs.h"
#include "mtf/mtf.h"
+#include "zerogrouping/zerogrouping.h"
+#include "statichuff/statichuff.h"
+#include "vfile/vfile.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;
long int volumesize = 0;
+ size_t pagesize = 32768; /* 32KB */
int ch;
t_BlockSort *bs;
- while ((ch = getopt(argc, argv, "cdt:")) != -1) {
+ while ((ch = getopt(argc, argv, "cdzt:p:")) != -1) {
switch (ch) {
case 'c': cflag = 1;
break;
-
+
case 'd': dflag = 1;
break;
-
+
+ case 'z': zflag = 1;
+ break;
+
case 't': tflag = 1;
- volumesize = atoi(optarg);
+ volumesize = atol(optarg);
break;
-
- default: fprintf(stderr, "Usage: %s [-cdt] sourcefile targetfile\n", argv[0]);
+
+ case 'p': pflag = 1;
+ pagesize = atoi(optarg);
+ break;
+
+ default: fprintf(stderr, "Usage: %s [-cdpt] sourcefile targetfile\n", argv[0]);
return(2);
}
}
if ( (argc == 1) || (cflag & dflag) || !(cflag | dflag) || ((argc - optind) < 2) ) {
fprintf(stderr, "Usage: %s [-cdt] sourcefile targetfile\n", argv[0]);
- if ((tflag == 1) && (volumesize <= 0)) fprintf(stderr,"Error: The volume size must be a non-zero value\n");
- return (2);
+ return (3);
+ }
+ if ((tflag) && (volumesize <= 0l)) {
+ 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");
+ return (5);
}
if (cflag == 1) {
/* Comprimo */
/* No me gusta el tmpfile ... es para probar como anda todo junto */
FILE *fp, *fp_out;
- unsigned long int len, i, j, total, k;
- int *mtf;
+ Uint32 i, j, total, k;
+ char *mtf;
char *salida, *data, c;
- len = 4096;
- data = malloc(sizeof(char)*len);
- salida = malloc(sizeof(char)*(len));
- bs = bs_create(len);
+ 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(Uint32)*2);
+ bs = bs_create(pagesize);
+
fp = fopen(argv[optind], "rb");
fp_out = fopen("tmp.comp", "wb");
+
c = fgetc(fp);
total = 0;
while (!feof(fp)) {
i = 0;
- while ((!feof(fp)) && (i < len)) {
+ while ((!feof(fp)) && (i < pagesize)) {
data[i++] = c;
c = fgetc(fp);
total++;
}
+
/* Hago el BS */
bs_solve(data, salida, bs, &k, i);
- /* Le aplico el MTF */
- mtf = jacu_mtf(salida, i);
- for(j=0; j<i; j++)
- fputc(mtf[j], fp_out);
+
+ /* 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);
+
+ /* Si me lo piden, aplico ZG. */
+ 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 {
+ /* Guardo el PageSize */
+ for(j=0; j<sizeof(Uint32); j++)
+ fputc(mtf[j], 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);
}
+
+ /* Limpiando */
fclose(fp);
fclose(fp_out);
bs_destroy(bs);
- return shuff_encode_file("tmp.comp",argv[optind+1]);
+
+ /* Comprimo con huffman */
+ i = shuff_encode_file("tmp.comp",argv[optind+1], volumesize);
+
+ /* borro el temporal */
+ unlink("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 */
- return shuff_decode_file(argv[optind],argv[optind+1]);
+ FILE *fp_out;
+ VFILE *fp_in;
+ Uint32 block_size, k;
+ char *block, *mtf, *orig;
+ char *z;
+
+ shuff_decode_file(argv[optind], "tmp.comp"); /*argv[optind+1]);*/
+ fp_in = vfopen("tmp.comp", "r", 0);
+ fp_out = fopen(argv[optind+1], "wb");
+
+ while (!vfeof(fp_in)) {
+ block_size = 0;
+ vfread(&block_size, sizeof(Uint32), 1, fp_in);
+ if (block_size > 0) {
+ block = malloc((block_size+sizeof(Uint32))*sizeof(char));
+ orig = malloc(block_size*sizeof(char));
+ vfread(block, block_size, sizeof(char), fp_in);
+
+ mtf = jacu_mtf_inv(z, block, block_size);
+
+ memcpy(&k, block, sizeof(Uint32));
+
+ bs_restore(orig, block+sizeof(Uint32), k, block_size);
+
+ fwrite(orig, block_size, sizeof(char), fp_out);
+ free(block);
+ free(orig);
+ free(mtf);
+ }
+ }
+ vfclose(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