Task: Read a configuration file


C++: #include "stdafx.h"
#include <iostream>
#include <fstream>
#include <vector>
#include <string>
#include <boost/tokenizer.hpp>
#include <boost/algorithm/string/case_conv.hpp>
using namespace std;
using namespace boost;

typedef boost::tokenizer<boost::char_separator<char> > Tokenizer;
static const char_separator<char> sep(" ","#;,");


struct configs{
	string fullname;
	string favoritefruit;
	bool needspelling;
	bool seedsremoved;
	vector<string> otherfamily;
} conf;

void parseLine(const string &line, configs &conf)
{
	if (line[0] == '#' || line.empty())
		return;
	Tokenizer tokenizer(line, sep);
	vector<string> tokens;
	for (Tokenizer::iterator iter = tokenizer.begin(); iter != tokenizer.end(); iter++)
		tokens.push_back(*iter);
	if (tokens[0] == ";"){
		algorithm::to_lower(tokens[1]);
		if (tokens[1] == "needspeeling")
			conf.needspelling = false;
		if (tokens[1] == "seedsremoved")
			conf.seedsremoved = false;
	}
	algorithm::to_lower(tokens[0]);
	if (tokens[0] == "needspeeling")
		conf.needspelling = true;
	if (tokens[0] == "seedsremoved")
		conf.seedsremoved = true;
	if (tokens[0] == "fullname"){
		for (unsigned int i=1; i<tokens.size(); i++)
			conf.fullname += tokens[i] + " ";
		conf.fullname.erase(conf.fullname.size() -1, 1);
	}
	if (tokens[0] == "favouritefruit") 
		for (unsigned int i=1; i<tokens.size(); i++)
			conf.favoritefruit += tokens[i];
	if (tokens[0] == "otherfamily"){
		unsigned int i=1;
		string tmp;
		while (i<=tokens.size()){		
			if ( i == tokens.size() || tokens[i] ==","){
				tmp.erase(tmp.size()-1, 1);
				conf.otherfamily.push_back(tmp);
				tmp = "";
				i++;
			}
			else{
				tmp += tokens[i];
				tmp += " ";
				i++;
			}
		}
	}
}

int _tmain(int argc, TCHAR* argv[])
{
	if (argc != 2)
	{
		wstring tmp = argv[0];
		wcout << L"Usage: " << tmp << L" <configfile.ini>" << endl;
		return -1;
	}
	ifstream file (argv[1]);
	
	if (file.is_open())
		while(file.good())
		{
			char line[255];
			file.getline(line, 255);
			string linestring(line);
			parseLine(linestring, conf);
		}
	else
	{
		cout << "Unable to open the file" << endl;
		return -2;
	}

	cout << "Fullname= " << conf.fullname << endl;
	cout << "Favorite Fruit= " << conf.favoritefruit << endl;
	cout << "Need Spelling= " << (conf.needspelling?"True":"False") << endl;
	cout << "Seed Removed= " << (conf.seedsremoved?"True":"False") << endl;
	string otherFamily;
	for (unsigned int i = 0; i < conf.otherfamily.size(); i++)
		otherFamily += conf.otherfamily[i] + ", ";
	otherFamily.erase(otherFamily.size()-2, 2);
	cout << "Other Family= " << otherFamily << endl;

	return 0;
}








COBOL:        identification division.
       program-id. ReadConfiguration.

       environment division.
       configuration section.
       repository.
           function all intrinsic.

       input-output section.
       file-control.
           select config-file     assign to "Configuration.txt"
                                  organization line sequential.
       data division.
       file section.

       fd  config-file.
       01  config-record          pic is x(128).

       working-storage section.
       77  idx                    pic 9(3).
       77  pos                    pic 9(3).
       77  last-pos               pic 9(3).
       77  config-key             pic x(32).
       77  config-value           pic x(64).
       77  multi-value            pic x(64).
       77  full-name              pic x(64).
       77  favourite-fruit        pic x(64).
       77  other-family           pic x(64) occurs 10.
       77  need-speeling          pic x(5) value "false".
       77  seeds-removed          pic x(5) value "false".

       procedure division.
       main.
           open input config-file
           perform until exit
              read config-file
                 at end
                    exit perform
              end-read  
              move trim(config-record) to config-record
              if config-record(1:1) = "#" or ";" or spaces
                 exit perform cycle
              end-if
              unstring config-record delimited by spaces into config-key
              move trim(config-record(length(trim(config-key)) + 1:)) to config-value
              if config-value(1:1) = "="
                 move trim(config-value(2:)) to config-value
              end-if
              evaluate upper-case(config-key)
                 when "FULLNAME"
                    move config-value to full-name
                 when "FAVOURITEFRUIT"
                    move config-value to favourite-fruit
                 when "NEEDSPEELING"
                    if config-value = spaces
                       move "true" to config-value
                    end-if
                    if config-value = "true" or "false"
                       move config-value to need-speeling
                    end-if
                 when "SEEDSREMOVED"
                    if config-value = spaces
                       move "true" to config-value
                    end-if,
                    if config-value = "true" or "false"
                       move config-value to seeds-removed
                    end-if
                 when "OTHERFAMILY"
                    move 1 to idx, pos
                    perform until exit
                       unstring config-value delimited by "," into multi-value with pointer pos
                          on overflow
                             move trim(multi-value) to other-family(idx)
                             move pos to last-pos
                          not on overflow
                             if config-value(last-pos:) <> spaces
                                move trim(config-value(last-pos:)) to other-family(idx)
                             end-if,
                             exit perform
                       end-unstring
                       add 1 to idx
                    end-perform
              end-evaluate
           end-perform
           close config-file

           display "fullname = " full-name
           display "favouritefruit = " favourite-fruit
           display "needspeeling = " need-speeling
           display "seedsremoved = " seeds-removed
           perform varying idx from 1 by 1 until idx > 10
              if other-family(idx) <> low-values
                 display "otherfamily(" idx ") = " other-family(idx)
              end-if
           end-perform
           .