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pr_encoding.c
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pr_encoding.c
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include "common.h"
#define MAX_LINE_SIZE 10000
#define LINE_SIZE 50
#define MAX_READ_PLACES 200
#define READ_PLACES 100
#define MAX_REPLICATED_PLACES_PER_PLACE 100
/*****************************************************************************/
void usage(char *myname)
{
fprintf(stderr,
"%s -- place replication encoding for contextual 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 (22.03.2022)\n", myname, myname);
exit(1);
}
/*****************************************************************************/
char* pr_encoding(char* in_file){
// Declare the file pointer
FILE *r_pointer ;
FILE *w_pointer = NULL;
// Variables that come along
char d_read[READ_PLACES];
char out_file[READ_PLACES] = {0};
char *token, *tmp, *tmp1, *token2;
int header = 0, places = 0, trans = 0, new_places = 0,
counter_pl = 0, num_tmp, rd_arcs = 0, 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 read_place_names[MAX_READ_PLACES][MAX_READ_PLACES] = {0};
/* Read up to RD label and get number of transitions and places*/
while(fgets(d_read, READ_PLACES, r_pointer) != NULL && !strstr(d_read, "RD")){
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(read_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);
if(strstr(d_read, "RD")){
strcat(out_file, ftokstr(in_file, 0, '.'));
strcat(out_file, "_pr.ll_net");
w_pointer = fopen(out_file, "w"); // if we have read arcs then create a new file.
char buf_arcs[READ_PLACES];
int* read_place_arcs = calloc(places+1, sizeof(int));
int read_place_written[places+1];
int replicated_places_per_place[places+1][MAX_REPLICATED_PLACES_PER_PLACE];
for (size_t i = 0; i <= places; i++){
read_place_written[i] = -1;
for (size_t j = 0; j < MAX_REPLICATED_PLACES_PER_PLACE; j++)
replicated_places_per_place[i][j] = -1;
}
char buffer_pl[MAX_LINE_SIZE] = {0};
char buffer_rd[MAX_LINE_SIZE] = {0};
/* Check for those places that have more than one read arc and make its respective
replication in buffer_pl which will be pasted into the output file */
while(fgets(d_read, READ_PLACES, r_pointer) != NULL && isdigit(d_read[0])){
strcat(buffer_rd, d_read);
token = strtok(d_read, ">");
num_tmp = strtol(token, &token2, 10);
read_place_arcs[num_tmp]++;
if(read_place_arcs[num_tmp] > 1){
sprintf(buf_arcs, "\"%s_%d\"%s,",
ftokstr(read_place_names[num_tmp], 1, '\"'), read_place_arcs[num_tmp],
ltokstr(read_place_names[num_tmp], 1, '\"'));
strcat(buffer_pl, buf_arcs);
new_places++;
replicated_places_per_place[num_tmp][read_place_arcs[num_tmp]] = places+new_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) */
new_places = 1;
fseek( r_pointer, 0, SEEK_SET );
while(fgets(d_read, READ_PLACES, r_pointer) != NULL && !strstr(d_read, "TR")){
token = ftokstr(d_read, 1, '\"');
if(token){
if(read_place_arcs[new_places] > 1){
sprintf(buf_arcs, "\"%s_%d\"%s", token, 1, ltokstr(d_read, 1, '\"'));
fprintf(w_pointer, "%s", buf_arcs);
}
else
fprintf(w_pointer, "%s", d_read);
new_places++;
}
else
fprintf(w_pointer, "%s", d_read);
}
token = strtok(buffer_pl, ",");
while (token != NULL){
fprintf(w_pointer, "%s", token);
token = strtok(NULL, ",");
}
/* TP SECTION */
/* Any transition t producing p in N produces p_i in N', i.e., p_i in postset(t)*/
if(strstr(d_read, "TR")){
fprintf(w_pointer, "%s", d_read);
while(fgets(d_read, READ_PLACES, r_pointer) && !strstr(d_read, "PT")){
if( strlen(d_read) > 2 && isdigit(d_read[0]) ){
tmp1 = ltokstr(d_read, 0, '<');
num_tmp = strtol(tmp1, &token2, 10);
counter_pl = read_place_arcs[num_tmp]-1;
for(int i = 1; i <= counter_pl && counter_pl > 0; i++){
sprintf(buf_arcs, "%s<%d", ftokstr(d_read, 0, '<'), replicated_places_per_place[num_tmp][i+1]);
fprintf(w_pointer, "%s\n", buf_arcs);
}
}
fprintf(w_pointer, "%s", d_read);
}
}
/* Transition t_i produces place p_i, i.e., p_i in postset(t)*/
new_places = places;
if(strstr(d_read, "PT")){
rd_arcs = 0;
token = ftokstr(buffer_rd, rd_arcs, '\n'); tmp = "";
tmp1 = ftokstr(token, 0, '>');
token2 = ltokstr(token, 0, '>');
num_tmp = strtol(tmp1, &tmp, 10);
if(token)
read_place_written[num_tmp] = read_place_arcs[num_tmp];
while (strlen(token) != 0){
if(read_place_written[num_tmp] == read_place_arcs[num_tmp]){
fprintf(w_pointer, "%s<%s\n", token2, tmp1);
read_place_written[num_tmp]--;
}else{
if (read_place_written[num_tmp] > 0){
new_places++;
sprintf(buf_arcs, "%s<%d", token2, new_places);
fprintf(w_pointer, "%s\n", buf_arcs);
read_place_written[num_tmp]--;
}
}
rd_arcs++;
token = ftokstr(buffer_rd, rd_arcs,'\n');
tmp1 = ftokstr(token, 0, '>');
token2 = ltokstr(token, 0, '>');
num_tmp = strtol(tmp1, &tmp, 10);
if(token && read_place_written[num_tmp] == -1){
read_place_written[num_tmp] = read_place_arcs[num_tmp];}
}
}
/* PT SECTION */
/* Any transition t consuming p in N consumes p_i in N', i.e., p_i in preset(t)*/
if(strstr(d_read, "PT")){
fprintf(w_pointer, "%s", d_read);
while(fgets(d_read, READ_PLACES, r_pointer) != NULL && !strstr(d_read, "RS")){
if( strlen(d_read) > 2 ){
tmp1 = ftokstr(d_read, 0, '>');
num_tmp = strtol(tmp1, &token2, 10);
counter_pl = read_place_arcs[num_tmp]-1;
for(int i = 1; i <= counter_pl && counter_pl > 0; i++){
sprintf(buf_arcs, "%d>%s", replicated_places_per_place[num_tmp][i+1], strtok(ltokstr(d_read, 0, '>'), "\n"));
fprintf(w_pointer, "%s\n", buf_arcs);
}
}
strstr(d_read, "\n") ? fprintf(w_pointer, "%s", d_read) : fprintf(w_pointer, "%s\n", d_read);
}
}
/* Transition t_i consumes place p_i, i.e., p_i in preset(t)*/
new_places = places;
for (size_t i = 1; i <= places; i++)
read_place_written[i] = -1;
if((strstr(d_read, "RS")) || fgets(d_read, READ_PLACES, r_pointer) == NULL ){
//if (fgets(d_read, READ_PLACES, r_pointer) == NULL) fprintf(w_pointer, "\n");
rd_arcs = 0;
token = ftokstr(buffer_rd, rd_arcs, '\n'); tmp = "";
tmp1 = ftokstr(token, 0, '>');
token2 = ltokstr(token, 0, '>');
num_tmp = strtol(tmp1, &tmp, 10);
if(token)
read_place_written[num_tmp] = read_place_arcs[num_tmp];
while (strlen(token) != 0){
if(read_place_written[num_tmp] == read_place_arcs[num_tmp]){
fprintf(w_pointer, "%s\n", token);
read_place_written[num_tmp]--;
}else{
if (read_place_written[num_tmp] > 0){
new_places++;
sprintf(buf_arcs, "%d>%s", new_places, token2);
fprintf(w_pointer, "%s\n", buf_arcs);
read_place_written[num_tmp]--;
}
}
rd_arcs++;
token = ftokstr(buffer_rd, rd_arcs,'\n');
tmp1 = ftokstr(token, 0, '>');
token2 = ltokstr(token, 0, '>');
num_tmp = strtol(tmp1, &tmp, 10);
if(token && read_place_written[num_tmp] == -1){
read_place_written[num_tmp] = read_place_arcs[num_tmp];}
}
}
/* RS SECTION */
/* Any transition t resetting p in N resets p_i in N', i.e., p_i in reset(t)*/
if(strstr(d_read, "RS")){
fprintf(w_pointer, "%s", d_read);
while(fgets(d_read, READ_PLACES, r_pointer) != NULL){
if( strlen(d_read) > 2 ){
tmp1 = ftokstr(d_read, 0, '>');
num_tmp = strtol(tmp1, &token2, 10);
counter_pl = read_place_arcs[num_tmp]-1;
for(int i = 1; i <= counter_pl && counter_pl > 0; i++){
sprintf(buf_arcs, "%d>%s", replicated_places_per_place[num_tmp][i+1], strtok(ltokstr(d_read, 0, '>'), "\n"));
fprintf(w_pointer, "%s\n", buf_arcs);
}
}
strstr(d_read, "\n") ? fprintf(w_pointer, "%s", d_read) : fprintf(w_pointer, "%s\n", 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: pr_encoding <ll_netfile>\n");
exit(1);
}
pr_encoding(argv[1]);
exit(0);
}