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/*
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* readLabFile.cpp |
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* |
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* Created on: 21.11.2012 |
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* Author: Gereon Kremer |
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*/ |
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#include "parser.h"
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#include "readLabFile.h"
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#include "src/exceptions/wrong_file_format.h"
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#include "src/exceptions/file_IO_exception.h"
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#include <cstdlib>
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#include <cstdio>
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#include <cstring>
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#include <clocale>
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#include <iostream>
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#include <errno.h>
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#include <time.h>
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#include <sys/stat.h>
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#include <sys/mman.h>
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#include <fcntl.h>
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#include <locale.h>
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#include <pantheios/pantheios.hpp>
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#include <pantheios/inserters/integer.hpp>
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namespace mrmc { |
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namespace parser { |
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/*!
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* Reads a .lab file and puts the result in a labeling structure. |
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* |
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* Labelings created with this method have to be freed with the delete operator. |
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* @param node_count the number of states. |
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* @param filename input .lab file's name. |
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* @return The pointer to the created labeling object. |
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*/ |
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mrmc::models::AtomicPropositionsLabeling * readLabFile(int node_count, const char * filename) |
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{ |
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/*!
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* open file and map to memory |
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*/ |
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struct stat st; |
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int f = open(filename, O_RDONLY); |
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if ((f < 0) || (stat(filename, &st) != 0)) { |
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/*!
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* |
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*/ |
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pantheios::log_ERROR("File could not be opened."); |
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throw mrmc::exceptions::file_IO_exception(); |
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return NULL; |
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} |
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char* data = (char*) mmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, f, 0); |
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if (data == (char*)-1) |
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{ |
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pantheios::log_ERROR("File could not be mapped. Something went wrong with mmap."); |
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close(f); |
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throw mrmc::exceptions::file_IO_exception(); |
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return NULL; |
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} |
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char* buf = data; |
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char sep[] = " \n\t"; |
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uint_fast32_t proposition_count = 0; |
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size_t cnt = 0; |
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do { |
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buf += cnt; |
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cnt = strcspn(buf, sep); |
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if (cnt > 0) { |
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if (strncmp(buf, "#DECLARATION", cnt) == 0) continue; |
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if (strncmp(buf, "#END", cnt) == 0) break; |
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proposition_count++; |
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} |
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else cnt = 1; |
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} while (cnt > 0); |
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mrmc::models::AtomicPropositionsLabeling* result = new mrmc::models::AtomicPropositionsLabeling(node_count, proposition_count); |
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char proposition[128]; |
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buf = data; |
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cnt = 0; |
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do { |
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buf += cnt; |
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cnt = strcspn(buf, sep); |
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if (cnt > 0) { |
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if (strncmp(buf, "#DECLARATION", cnt) == 0) continue; |
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if (strncmp(buf, "#END", cnt) == 0) break; |
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strncpy(proposition, buf, cnt); |
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proposition[cnt] = '\0'; |
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result->addAtomicProposition(proposition); |
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} |
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else cnt = 1; |
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} while (cnt > 0); |
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buf += 4; |
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uint_fast32_t node; |
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while (1) { |
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node = strtol(buf, &buf, 10); |
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while (*buf != '\0') { |
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cnt = strcspn(buf, sep); |
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if (cnt == 0) buf++; |
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else break; |
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} |
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strncpy(proposition, buf, cnt); |
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proposition[cnt] = '\0'; |
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result->addAtomicPropositionToState(proposition, node); |
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buf += cnt; |
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} |
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munmap(data, st.st_size); |
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close(f); |
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return result; |
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} |
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} //namespace parser
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} //namespace mrmc
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gereon
12 years ago
