Initfile.cc 3.62 KB
Newer Older
Praetorius, Simon's avatar
Praetorius, Simon committed
1 2 3 4 5 6 7 8
#include "Initfile.h"

#include <string>
#include <stdexcept>
#include <iostream>
#include <sstream>
using namespace std;

9 10
namespace AMDiS {

Praetorius, Simon's avatar
Praetorius, Simon committed
11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144
/// the small parser for the initfile. see description of read(Initfile&, istream&)
struct Parser {
	Parser(const string& line) {
		size_t pos= line.find(':');
		if (pos == string::npos)
			throw runtime_error("cannot find the delimiter ':' in line '"+line+"'");
		name= line.substr(0, pos);
		value= line.substr(pos+1, line.length() - (pos + 1));
		// remove everything after the %
		pos= value.find('%');
		if (pos != string::npos) {
			value= value.substr(0, pos);
		}
	}
	string name;
	string value;
};

Initfile* Initfile::singlett= NULL;
std::set< std::string > Initfile::fn_include_list;

/// initialize singleton object an global parameters
void Initfile::init(std::string in) {
	initIntern();
	singlett->clear();
	fn_include_list.clear();
	singlett->read(in);
	
	singlett->getInternalParameters();
	
	// initialize global strcutures using parameters
	Global::init();
};

/// Fill an initfile from a file with filename fn
void Initfile::read(std::string fn) {
// read file if its not parsed already
	if (fn_include_list.find(fn)==fn_include_list.end()) {
		std::ifstream inputFile;
		inputFile.open(fn.c_str(), std::ios::in);
		if (!inputFile.is_open())
			throw runtime_error("init-file cannot be opened for reading");
		
		fn_include_list.insert(fn);
		read(inputFile);
	}
};

/// Fill an initfile from an input stream
void Initfile::read(istream& in) {
	unsigned line_length= 256;
	char swap[line_length];
	in.getline(swap, line_length);
	while (in.good()) {
		std::string whitespaces= " \t\r\f";
		std::string sw(swap);
		size_t pos0= sw.find_first_not_of(whitespaces);
		
		if (pos0!=std::string::npos && sw[pos0]!='%' && sw[pos0]!='#' && sw[pos0]!=0) {
		// parse line and extract map: tag->value
			Parser parser(sw);
			operator[](parser.name)= parser.value;
		} else if (sw[pos0]=='#' && static_cast<size_t>(sw.find("#include"))==pos0) {
		// include file by '#include "filename"' or '#include <filename>'
			size_t pos= sw.find_first_not_of(whitespaces,std::string("#include").size()+1);
			size_t epos= 0;
			std::string fn= "";
			std::stringstream errorMsg;
			switch (char c= swap[pos++]) {
			case '<':
				c= '>';
			case '\"':
				whitespaces+= c;
				epos= sw.find_first_of(whitespaces, pos);
				fn= sw.substr(pos,epos-pos);
			
				if (sw[epos]!=c) {
					errorMsg << "filename in #include not terminated by " << c;
					throw std::runtime_error(errorMsg.str());
				}
				break;
			default:
				throw std::runtime_error("no filename given for #include");
			}
			read(fn);
		}
		in.getline(swap, line_length);
	}
};

/// read standard values for output and information of parameter-values
void Initfile::getInternalParameters() 
{
	int val= 10;
	get("level of information", val, 0);
	msgInfo= val;
	
	val= 1;
	get("WAIT", val, 0);
	msgWait= val;
	
	val= 1;
	get("parameter information", val, 0);
	paramInfo= val;
	
	if (msgInfo==0)
		paramInfo= 0;
};

/// print all parameters to std::cout
void Initfile::printParameters() {
	initIntern();
	Initfile::iterator it;
	for (it= singlett->begin(); it!=singlett->end(); it++)
		std::cout << (*it).first << " => " << (*it).second << std::endl;
};

/// Write data-map to initfile
void Initfile::write(ostream& out) {
	Initfile::iterator it;
	for (it= begin() ; it!=end(); it++)
		out << (*it).first << ": " << (*it).second << std::endl;
	
};

/// Write data-map to initfile
void Initfile::write(std::string fn) {
	std::ofstream outFile;
	outFile.open(fn.c_str(), std::ios::out);
	if (!outFile.is_open())
		throw runtime_error("init-file cannot be opened for writing");
	
	write(outFile);
};
145 146

}