| 1 | #include <fstream.hfa>
|
|---|
| 2 | #include "parseconfig.hfa"
|
|---|
| 3 |
|
|---|
| 4 | bool comments( ifstream & in, char * name ) {
|
|---|
| 5 | while () {
|
|---|
| 6 | in | name;
|
|---|
| 7 | if ( fail( in ) ) return true;
|
|---|
| 8 | if ( name[0] != '#' ) break;
|
|---|
| 9 | in | nl; // ignore remainder of line
|
|---|
| 10 | } // for
|
|---|
| 11 | return false;
|
|---|
| 12 | } // comments
|
|---|
| 13 |
|
|---|
| 14 | // Process the configuration file to set the simulation parameters.
|
|---|
| 15 | void parseConfig( const char * configFile, ConfigParms & cparms ) {
|
|---|
| 16 | enum { Parmnum = 11 };
|
|---|
| 17 | struct {
|
|---|
| 18 | const char * name; // configuration name
|
|---|
| 19 | bool used; // already supplied ?
|
|---|
| 20 | unsigned int & value; // location to put configuration value
|
|---|
| 21 | } parms[Parmnum] = {
|
|---|
| 22 | { "StopCost", false, cparms.stopCost },
|
|---|
| 23 | { "NumStudents", false, cparms.numStudents },
|
|---|
| 24 | { "NumStops", false, cparms.numStops },
|
|---|
| 25 | { "MaxNumStudents", false, cparms.maxNumStudents },
|
|---|
| 26 | { "TimerDelay", false, cparms.timerDelay },
|
|---|
| 27 | { "MaxStudentDelay", false, cparms.maxStudentDelay },
|
|---|
| 28 | { "MaxStudentTrips", false, cparms.maxStudentTrips },
|
|---|
| 29 | { "GroupoffDelay", false, cparms.groupoffDelay },
|
|---|
| 30 | { "ConductorDelay", false, cparms.conductorDelay },
|
|---|
| 31 | { "ParentalDelay", false, cparms.parentalDelay },
|
|---|
| 32 | { "NumCouriers", false, cparms.numCouriers },
|
|---|
| 33 | };
|
|---|
| 34 | char * name;
|
|---|
| 35 | int value;
|
|---|
| 36 | unsigned int cnt, posn, numOfParm = 0;
|
|---|
| 37 |
|
|---|
| 38 | ifstream in;
|
|---|
| 39 | try {
|
|---|
| 40 | open( in, configFile ); // open the configuration file for input
|
|---|
| 41 |
|
|---|
| 42 | for ( cnt; Parmnum ) { // parameter names can appear in any order
|
|---|
| 43 | if ( comments( in, name ) ) break; // eof ?
|
|---|
| 44 | for ( posn; posn < Parmnum && name != parms[posn].name; ++posn ); // linear search
|
|---|
| 45 | if ( posn == Parmnum ) break; // configuration not found ?
|
|---|
| 46 | if ( parms[posn].used ) break; // duplicate configuration ?
|
|---|
| 47 | in | value;
|
|---|
| 48 | if ( value < 0 ) {
|
|---|
| 49 | close( in );
|
|---|
| 50 | exit | "Error: file \"" | configFile | "\" parameter " | name
|
|---|
| 51 | | " value " | value | " must be non-negative."; // *** DOES THIS PRINT TO STDERR??? IT MUST!!! *** //
|
|---|
| 52 | } // if
|
|---|
| 53 | if ( fail( in ) ) break;
|
|---|
| 54 | in | nl; // ignore remainder of line
|
|---|
| 55 | ++numOfParm;
|
|---|
| 56 | parms[posn].used = true;
|
|---|
| 57 | parms[posn].value = value;
|
|---|
| 58 | } // for
|
|---|
| 59 | } catch( Open_Failure * ex; ex->istream == &in ) {
|
|---|
| 60 | exit | "Error: could not open input file \"" | configFile | "\""; // *** DOES THIS PRINT TO STDERR??? IT MUST!!! *** //
|
|---|
| 61 | } // try
|
|---|
| 62 |
|
|---|
| 63 | close( in );
|
|---|
| 64 |
|
|---|
| 65 | if ( cparms.numStops < 2 ) {
|
|---|
| 66 | exit | "Error: file \"" | configFile | "\" parameter NumStops value "
|
|---|
| 67 | | cparms.numStops | " must be at least 2."; // *** DOES THIS PRINT TO STDERR??? IT MUST!!! *** //
|
|---|
| 68 | }
|
|---|
| 69 | if ( cparms.numStudents < 1 ) {
|
|---|
| 70 | exit | "Error: file \"" | configFile | "\" parameter NumStudents value "
|
|---|
| 71 | | cparms.numStudents | " must be at least 1."; // *** DOES THIS PRINT TO STDERR??? IT MUST!!! *** //
|
|---|
| 72 | }
|
|---|
| 73 | if ( cparms.numCouriers < 1 ) {
|
|---|
| 74 | exit | "Error: file \"" | configFile | "\" parameter NumCouriers value "
|
|---|
| 75 | | cparms.numCouriers | " must be at least 1."; // *** DOES THIS PRINT TO STDERR??? IT MUST!!! *** //
|
|---|
| 76 | }
|
|---|
| 77 | } // processConfigFile
|
|---|
| 78 |
|
|---|
| 79 | // Local Variables: //
|
|---|
| 80 | // tab-width: 4 //
|
|---|
| 81 | // compile-command: "cfa parseconfig.cfa" //
|
|---|
| 82 | // End: //
|
|---|
