Hago que imprima bpb al terminar :)

[z.facultad/75.06/jacu.git] / src / jacu.c

diff --git a/src/jacu.c b/src/jacu.c
index 21f31c53b9d0c20784837a29bd50d8b6c12afa7e..fe9499847316777a43d5c07aa4a54eac905536b0 100644 (file)
--- a/src/jacu.c
+++ b/src/jacu.c
@@ -1,16 +1,20 @@
 
-#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;
@@ -18,7 +22,7 @@ int main(int argc, char* argv[])
        int ch;
        t_BlockSort *bs;
                        
-       while ((ch = getopt(argc, argv, "cdt:p:")) != -1) { 
+       while ((ch = getopt(argc, argv, "cdzt:p:")) != -1) { 
                 
                switch (ch) { 
                        case 'c': cflag = 1; 
@@ -27,6 +31,9 @@ int main(int argc, char* argv[])
                        case 'd': dflag = 1; 
                                          break; 
 
+                       case 'z': zflag = 1; 
+                                         break; 
+
                        case 't': tflag = 1; 
                                          volumesize = atol(optarg);
                                          break; 
@@ -83,8 +90,22 @@ int main(int argc, char* argv[])
 
                        /* 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));
-                       for(j=0; j<i; j++)
-                               fputc(mtf[j], fp_out);
+
+                       /* Si me lo piden, aplico ZG. */
+                       if (zflag)
+                       {
+                               size_t len;
+                               char buff[2];
+                               ZG zg;
+                               zg_init(&zg);
+                               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++)
+                                       fputc(mtf[j], fp_out);
+                       }
                        free(mtf);
                }
 
@@ -98,13 +119,59 @@ int main(int argc, char* argv[])
 
                /* 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;
+               unsigned long int block_size, k;
+               char *block, *mtf, *orig;
+               int *pos;
+
+               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(unsigned long int), 1, fp_in);
+                       if (block_size > 0) {
+                               block = malloc((block_size+sizeof(unsigned long int))*sizeof(char));
+                               orig = malloc(block_size*sizeof(char));
+                               vfread(block, block_size, sizeof(char), fp_in);
+
+                               mtf = jacu_mtf_inv(block, /*XXX NO LO TENGO XXX */pos, block_size);
+
+                               memcpy(&k, block, sizeof(unsigned long int));
+
+                               bs_restore(orig, block+sizeof(unsigned long int), 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;
+}
+