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rs_complement.c
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rs_complement.c
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include "common.h"
#define MAX_LINE_SIZE 500
#define MAX_RESET_PLACES 100
/*****************************************************************************/
void usage(char *myname)
{
fprintf(stderr,
"%s -- reset complement encoding for reset nets\n\n"
"Usage: %s <LLnetfile> \n\n"
"Unless specified otherwise, all filenames will default to\n"
"the basename of <LLnetfile> plus appropriate extensions.\n\n"
"Version 1.0.0 (29.04.2022)\n", myname, myname);
exit(1);
}
/*****************************************************************************/
char* rs_complement(char* in_file){
// Declare the file pointer
FILE *r_pointer ;
FILE *w_pointer = NULL;
// Variables that come along
char d_read[MAX_RESET_PLACES];
char out_file[MAX_RESET_PLACES] = {0};
char *token, *tmp, *tmp1, *token2;
int header = 0, places = 0, trans = 0, complement_places = 0, num_tmp, num_tmp1, names = 1;
// Open the existing file using fopen()
// in read mode using "r" attribute
r_pointer = fopen(in_file, "r") ;
// Check if this r_pointer is null
// which maybe if the file does not exist
if ( r_pointer == NULL ){
printf( "%s file failed to open.", in_file ) ;
}
else
{
char place_names[MAX_RESET_PLACES][MAX_RESET_PLACES] = {0};
/* Read up to RD label and get number of transitions and places*/
while(fgets(d_read, MAX_RESET_PLACES, r_pointer) != NULL &&
!strstr(d_read, "RD") && !strstr(d_read, "TP")){
if (d_read[0] == 'P' && d_read[1] == 'L');
else if (places == header) header++;
if (d_read[0] == 'T' && d_read[1] == 'R');
else if (trans == places){
if( d_read[0] == '\"'){
strcpy(place_names[names], d_read);
names++;
}
places++;
}
trans++;
}
/* Compute header lines, number of places and transitions */
header++;
places = places - header;
header++;
trans = trans - places - header;
printf("header: %d\n", header);
printf("places: %d\n", places);
printf("trans: %d\n", trans);
while(fgets(d_read, MAX_RESET_PLACES, r_pointer) != NULL && !strstr(d_read, "RS")){}
if(strstr(d_read, "RS")){
strcat(out_file, ftokstr(in_file, 0, '.'));
strcat(out_file, "_rs.ll_net");
w_pointer = fopen(out_file, "w"); // if we have reset arcs then create a new file.
char buf_arcs[MAX_RESET_PLACES];
int* complement_place = calloc(places+1, sizeof(int));
int* id_complement_place = calloc(places+1, sizeof(int));
int (*presets)[trans+1] = calloc(places+1, sizeof *presets);
int (*postsets)[trans+1] = calloc(places+1, sizeof *postsets);
int (*resets)[trans+1] = calloc(places+1, sizeof *resets);
char buffer_pl[MAX_LINE_SIZE] = {0};
/* Check for those places that have at least one reset arc and make its respective
complement in buffer_pl which will be pasted into the output file */
while(fgets(d_read, MAX_RESET_PLACES, r_pointer) != NULL && isdigit(d_read[0])){
token = strtok(d_read, ">");
num_tmp = strtol(token, &token2, 10);
if(complement_place[num_tmp] == 0){
if (!strcmp(ltokstr(place_names[num_tmp], 1, '\"'),"M1\n"))
sprintf(buf_arcs, "\"%s%s\"\n,", "¬",
ftokstr(place_names[num_tmp], 1, '\"'));
else
sprintf(buf_arcs, "\"%s%s\"%s\n,", "¬",
ftokstr(place_names[num_tmp], 1, '\"'),"M1");
strcat(buffer_pl, buf_arcs);
complement_places++;
id_complement_place[complement_places] = num_tmp;
complement_place[num_tmp] = places+complement_places;
}
}
/* Print into the output file the places that come from the input file plus
those that were replicated (print the content from buffer_pl) */
fseek( r_pointer, 0, SEEK_SET );
while(fgets(d_read, MAX_RESET_PLACES, r_pointer) != NULL && !strstr(d_read, "TR")){
fprintf(w_pointer, "%s", d_read);
}
if (strstr(d_read, "TR")){
token = strtok(buffer_pl, ",");
while (token != NULL){
fprintf(w_pointer, "%s", token);
token = strtok(NULL, ",");
}
}
fseek( r_pointer, -strlen(d_read), SEEK_CUR );
while(fgets(d_read, MAX_RESET_PLACES, r_pointer) != NULL && !strstr(d_read, "TP")){
fprintf(w_pointer, "%s", d_read);
}
/* TP SECTION */
/* Reading the transitions that are part of the preset set of a place whose reset set is not empty to create later on its complement. This part is just to build the preset of certain places which have not empty reset set*/
if(strstr(d_read, "TP")){
while(fgets(d_read, MAX_RESET_PLACES, r_pointer) && !strstr(d_read, "PT")){
if( strlen(d_read) > 2 && isdigit(d_read[0]) ){
tmp1 = ltokstr(d_read, 0, '<');
tmp = ftokstr(d_read, 0, '<');
num_tmp = strtol(tmp, &token2, 10);
num_tmp1 = strtol(tmp1, &token2, 10);
if(complement_place[num_tmp1] > 0)
presets[num_tmp1][num_tmp] = num_tmp;
}
}
}
/* PT SECTION */
/* Reading the transitions that are part of the postset set of a place whose reset set is not empty to create its complement*/
if(strstr(d_read, "PT")){
while(fgets(d_read, MAX_RESET_PLACES, r_pointer) && !strstr(d_read, "RS")){
if( strlen(d_read) > 2 && isdigit(d_read[0]) ){
tmp = ftokstr(d_read, 0, '>');
tmp1 = ltokstr(d_read, 0, '>');
num_tmp = strtol(tmp, &token2, 10);
num_tmp1 = strtol(tmp1, &token2, 10);
if(complement_place[num_tmp] > 0)
postsets[num_tmp][num_tmp1] = num_tmp1;
}
}
}
/* RS SECTION */
/* Reading the transitions that are part of the reset set of a place to create its complement*/
if(strstr(d_read, "RS")){
while(fgets(d_read, MAX_RESET_PLACES, r_pointer)){
if( strlen(d_read) > 2 && isdigit(d_read[0]) ){
tmp = ftokstr(d_read, 0, '>');
tmp1 = ltokstr(d_read, 0, '>');
num_tmp = strtol(tmp, &token2, 10);
num_tmp1 = strtol(tmp1, &token2, 10);
if(complement_place[num_tmp] > 0)
resets[num_tmp][num_tmp1] = num_tmp1;
}
}
}
/* making complement places */
fseek( r_pointer, 0, SEEK_SET );
while(fgets(d_read, MAX_RESET_PLACES, r_pointer) != NULL && !strstr(d_read, "TP")){}
/* Constructing the preset of ¬p according to p: pre(¬p) = (post(p) U res(p))\pre(p) */
if(strstr(d_read, "TP")){
fprintf(w_pointer, "%s", d_read);
for (size_t i = 1; i <= complement_places; i++){
num_tmp1 = id_complement_place[i];
if (complement_place[num_tmp1] > 0){
for (size_t k = 1; k <= trans; k++){
if(postsets[num_tmp1][k] != 0 && postsets[num_tmp1][k] != presets[num_tmp1][k]){
sprintf(buf_arcs, "%d<%d", postsets[num_tmp1][k], complement_place[num_tmp1]);
fprintf(w_pointer, "%s\n", buf_arcs);
}
if(resets[num_tmp1][k] != 0 && resets[num_tmp1][k] != presets[num_tmp1][k] && resets[num_tmp1][k] != postsets[num_tmp1][k]){
sprintf(buf_arcs, "%d<%d", resets[num_tmp1][k], complement_place[num_tmp1]);
fprintf(w_pointer, "%s\n", buf_arcs);
}
}
complement_place[num_tmp1] *= -1;
}
}
while(fgets(d_read, MAX_RESET_PLACES, r_pointer) && !strstr(d_read, "PT"))
fprintf(w_pointer, "%s", d_read);
}
/* Constructing the postset of ¬p according to p: post(¬p) = pre(p)\(post(p) U res(p)) */
if(strstr(d_read, "PT")){
fprintf(w_pointer, "%s", d_read);
for (size_t i = 1; i <= complement_places; i++){
num_tmp = id_complement_place[i];
if (complement_place[num_tmp] < 0){
for (size_t k = 1; k <= trans; k++){
if(presets[num_tmp][k] != 0 && presets[num_tmp][k] != postsets[num_tmp][k] && presets[num_tmp][k] != resets[num_tmp][k]){
sprintf(buf_arcs, "%d>%d", complement_place[num_tmp]*-1, presets[num_tmp][k]);
fprintf(w_pointer, "%s\n", buf_arcs);
}
}
complement_place[num_tmp] *= -1;
}
}
while(fgets(d_read, MAX_RESET_PLACES, r_pointer) && !strstr(d_read, "RS"))
fprintf(w_pointer, "%s", d_read);
}
/* Constructing the reset of ¬p according to p: res(¬p) = res(p) */
if(strstr(d_read, "RS")){
fprintf(w_pointer, "%s", d_read);
for (size_t i = 1; i <= complement_places; i++){
num_tmp = id_complement_place[i];
if (complement_place[num_tmp] > 0){
for (size_t k = 1; k <= trans; k++){
if(resets[num_tmp][k] != 0){
sprintf(buf_arcs, "%d>%d", complement_place[num_tmp], resets[num_tmp][k]);
fprintf(w_pointer, "%s\n", buf_arcs);
}
}
complement_place[num_tmp] *= -1;
}
}
while(fgets(d_read, MAX_RESET_PLACES, r_pointer))
fprintf(w_pointer, "%s", d_read);
}
}
fclose(r_pointer);
fclose(w_pointer);
}
return out_file[0] != '\0' ? out_file : in_file;
}
int main (int argc, char **argv)
{
if (argc != 2){
fprintf(stderr,"usage: rs_encoding <ll_netfile>\n");
exit(1);
}
rs_complement(argv[1]);
exit(0);
}