X-Git-Url: https://git.llucax.com/z.facultad/75.06/jacu.git/blobdiff_plain/de5da6745aa448b96eee01fbd9df0575629678b9..fef03d51453b511c6355d53f1c4f5d06f1e8519e:/src/blocksorting/bs.c

diff --git a/src/blocksorting/bs.c b/src/blocksorting/bs.c
index 21e1ff6..a1e14a2 100644
--- a/src/blocksorting/bs.c
+++ b/src/blocksorting/bs.c
@@ -1,11 +1,13 @@
 
 #include "bs.h"
+#include <stdlib.h>
+#include <ctype.h>
 
 /* Block Sorting Optimizado en memoria! */
 
 typedef struct _bs_decode_t_ {
 	char c;
-	unsigned long int pos;
+	Uint32 sig;
 } t_BlockSortDecode;
 
 char es_menor(char *data, t_BlockSort *bs, int i, int j);
@@ -16,6 +18,11 @@ int _compare(const void *d1, const void *d2) {
 	s1 = (t_BlockSortDecode *)d1;
 	s2 = (t_BlockSortDecode *)d2;
 
+	/* Hack si es el mismo caracter, dejo como mejor la de menor sig */
+	if (s1->c == s2->c) {
+		return (s1->sig - s2->sig);
+	}
+
 	return (s1->c - s2->c);
 }
 
@@ -25,12 +32,12 @@ int __compare(const void *d1, const void *d2) {
 	s1 = (t_BlockSortData *)d1;
 	s2 = (t_BlockSortData *)d2;
 
-	return es_menor(s1->bs->data, s1->bs, s1->pos_inicial, s2->pos_inicial);
+	return  es_menor(s1->bs->data, s1->bs, s1->pos_inicial, s2->pos_inicial);
 }
 
 char es_menor(char *data, t_BlockSort *bs, int i, int j)
 {
-	unsigned long int pi, pj, k;
+	Uint32 pi, pj, k;
 
 	for(k=0; k<bs->len; k++) {
 		pi = (i+k)%bs->len;
@@ -60,28 +67,23 @@ void ordenar_array(char *data, t_BlockSort *bs)
 	qsort(bs->array, bs->len, sizeof(t_BlockSortData), __compare);
 }
 
-void print_(char *data, unsigned long int pos, unsigned long int len)
+int generar_salida(char *data, t_BlockSort *bs, char *salida)
 {
-	unsigned long int i;
+	Uint32 i, k;
+	char *out;
 
-	for(i=0; i<len; i++)
-		printf("%c", data[(pos+i)%len]);
-	printf("\n");
-}
+	/* Dejo lugar para guardar el K */
+	out = salida + sizeof(Uint32);
 
-int generar_salida(char *data, t_BlockSort *bs, char *salida)
-{
-	unsigned long int i, k;
 	k=-1;
 	for(i=0; i<bs->len; i++) {
-		/* print_(data, bs->array[i].pos_inicial, bs->len); */
-		salida[i] = data[bs->array[i].pos_final];
+		out[i] = data[bs->array[i].pos_final];
 		if (bs->array[i].ord == 1) k = i;
 	}
 	return k;
 }
 
-void bs_solve(char *in, char *out, t_BlockSort *bs, unsigned long int *k, unsigned int leido)
+void bs_solve(char *in, char *out, t_BlockSort *bs, Uint32 *k, Uint32 leido)
 {
 	unsigned int l;
 	l = bs->len;
@@ -93,19 +95,21 @@ void bs_solve(char *in, char *out, t_BlockSort *bs, unsigned long int *k, unsign
 	ordenar_array(in, bs);
 	(*k) = generar_salida(in, bs, out);
 
+	/* Guardo el k y el tamaño en el array */	
+	memcpy(out, k, sizeof(Uint32));
 	bs->len = l;
 }
 
-void bs_restore(char *dst, char *c, unsigned long int k, unsigned long int len)
+void bs_restore(char *dst, char *c, Uint32 k, Uint32 len)
 {
-	unsigned long int i, current;
+	Uint32 i, current;
 	t_BlockSortDecode *in;
 
 	in = malloc(sizeof(t_BlockSortDecode)*len);
 
 	for(i=0; i<len; i++) {
 		in[i].c = c[i];
-		in[i].pos = i;
+		in[i].sig = i;
 	}
 
 	qsort(in, len, sizeof(t_BlockSortDecode), _compare);
@@ -114,12 +118,12 @@ void bs_restore(char *dst, char *c, unsigned long int k, unsigned long int len)
 	i=0;
 	do {
 		dst[i++] = in[current].c;
-		current = in[current].pos;
+		current = in[current].sig;
 	} while (current != k);
 	free(in);
 }
 
-t_BlockSort *bs_create(unsigned long int len)
+t_BlockSort *bs_create(Uint32 len)
 {
 	t_BlockSort *tmp;
 
@@ -137,3 +141,53 @@ void bs_destroy(t_BlockSort *bs)
 	free(bs);
 }
 
+
+void bs_EOL(char *data, Uint32 pagesize, Uint32 *j)
+{
+	/* Trato de agregar 4 espacios antes y 4 despues de un \n */
+	int i = (*j);
+
+	/* Verifico poder hacerlo */
+	if ((i+9) >= pagesize) return; /* No pude! */
+	
+	data[i++] = ' ';
+	data[i++] = ' ';
+	data[i++] = ' ';
+	data[i++] = ' ';
+	data[i++] = ' ';
+	data[i++] = ' ';
+	data[i++] = ' ';
+	data[i++] = ' ';
+	data[i++] = ' ';
+
+	(*j) += 9;
+}
+
+int bs_readblock(FILE *fp, char *data, Uint32 pagesize)
+{
+	Uint32 i=0;
+	char c;
+	while ((!feof(fp)) && (i < pagesize)) {
+		c = fgetc(fp);
+/*		if (c != '\n')*/
+		if (c == '\0') {
+			/* Debo encodear el \0 para que no complique */
+			data[i++] = 0x00;
+			data[i++] = 0xFF;
+		}
+		if (isupper(c)) {
+			data[i++] = '\0';
+			data[i++] = tolower(c);
+		} else {
+			data[i++] = c;
+		}
+/*		else
+			bs_EOL(data, pagesize, &i);*/
+	}
+
+	/* Saco un EOF que lee de mas */
+	if (i<pagesize) i--;
+
+	return i;
+}
+