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https://github.com/nasa/trick.git
synced 2024-12-21 06:03:10 +00:00
133 lines
4.0 KiB
C++
133 lines
4.0 KiB
C++
#include <sstream>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <limits>
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#include "trick/MonteVarFile.hh"
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#include "trick/message_proto.h"
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#include "trick/exec_proto.h"
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Trick::MonteVarFile::MonteVarFile(std::string in_name, std::string in_file_name, unsigned int in_column, std::string in_unit) : input_file_stream(NULL) {
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name = in_name;
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column = in_column;
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unit = in_unit;
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set_file_name(in_file_name);
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}
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Trick::MonteVarFile::~MonteVarFile() {
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delete input_file_stream;
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}
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// Composite the various properties of this MonteVarFile.
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std::string Trick::MonteVarFile::describe_variable() {
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std::stringstream ss;
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ss << "#NAME:\t\t" << name << "\n"
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<< "#TYPE:\t\tFILE\n"
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<< "#UNIT:\t\t" << unit << "\n"
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<< "#FILE:\t\t" << file_name << "\n"
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<< "#COLUMN:\t" << column << "\n";
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return ss.str();
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}
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std::string Trick::MonteVarFile::get_next_value() {
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// Open the file and seek to the previous position.
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input_file_stream->open(file_name.c_str(), std::ifstream::in);
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input_file_stream->seekg(stream_position);
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if (input_file_stream->good()) {
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std::string line;
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// Skip the comments and empty lines in the data file.
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do {
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std::getline(*input_file_stream, line);
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if(input_file_stream->eof()) {
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if (line.empty()) {
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input_file_stream->close();
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return "EOF";
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} else {
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input_file_stream->seekg(0, input_file_stream->end);
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}
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}
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}
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while(line[0] == '#' || line[0] == '\0');
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// Store the current stream position and close the file.
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stream_position = input_file_stream->tellg();
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input_file_stream->close();
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// Count the number of columns in the input file.
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char *token;
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unsigned int ntokens = 0;
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char* temp_str = strdup(line.c_str());
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token = strtok(temp_str, " \t");
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while (token != NULL) {
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token = strtok(NULL, " \t");
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ntokens++;
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}
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// Verify the input column number is valid.
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if ((column == 0) || (column > ntokens)) {
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char string[100];
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sprintf(string, "Trick:MonteVarFile An invalid column number %u, valid column numbers are 1 - %u", column, ntokens);
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exec_terminate_with_return(-1, __FILE__, __LINE__, string);
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}
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// Get the next value.
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if(temp_str) {
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free(temp_str);
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}
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temp_str = strdup(line.c_str());
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token = strtok(temp_str, " \t");
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for(unsigned int i = 1; i < column; i++) {
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// Iterate through each token in the temp_str.
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if(token != NULL)
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token = strtok(NULL, " \t");
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}
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// Return the value as a string.
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value = token;
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std::stringstream ss;
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if(unit.empty())
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ss << name << " = " << token;
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else
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ss << name << " = " << "trick.attach_units(\"" << unit << "\", " << token << ")";
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if(temp_str) {
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free(temp_str);
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temp_str = nullptr;
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}
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return ss.str();
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}
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char string[100];
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sprintf(string, "Trick:MonteVarFile the input file \"%s\" is not open for reading", file_name.c_str());
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exec_terminate_with_return(-1, __FILE__, __LINE__, string);
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return NULL;
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}
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void Trick::MonteVarFile::set_file_name(std::string in_file_name) {
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delete input_file_stream;
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input_file_stream = new std::ifstream(in_file_name.c_str(), std::ifstream::in);
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if (input_file_stream->fail()) {
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std::stringstream string_stream;
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string_stream << "Error: " << strerror(errno) << std::endl
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<< " Trick:MonteVarFile input file \"" << in_file_name << "\" failed to open";
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exec_terminate_with_return(-1, __FILE__, __LINE__, string_stream.str().c_str());
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}
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input_file_stream->close();
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file_name = in_file_name;
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}
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void Trick::MonteVarFile::set_column(unsigned int in_column) {
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column = in_column;
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}
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