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306 lines
8.4 KiB
C++
306 lines
8.4 KiB
C++
//======== (C) Copyright 2002 Charles G. Cleveland All rights reserved. =========
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//
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// The copyright to the contents herein is the property of Charles G. Cleveland.
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// The contents may be used and/or copied only with the written permission of
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// Charles G. Cleveland, or in accordance with the terms and conditions stipulated in
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// the agreement/contract under which the contents have been supplied.
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//
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// Purpose:
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//
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// $Workfile: TRFactory.cpp $
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// $Date: 2002/08/16 02:28:25 $
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//
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//-------------------------------------------------------------------------------
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// $Log: TRFactory.cpp,v $
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// Revision 1.6 2002/08/16 02:28:25 Flayra
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// - Added document headers
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//
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//===============================================================================
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#include "textrep/TRTag.h"
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#include "textrep/TRTagValuePair.h"
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#include "textrep/TRDescription.h"
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#include "textrep/TRFactory.h"
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#include "util/STLUtil.h"
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const int maxLineLength = 256;
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bool TRFactory::ReadDescriptions(const string& inRelativePathFilename, TRDescriptionList& outDescriptionList)
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{
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bool theSuccess = false;
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bool theDescriptionRead = false;
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// Open file specified by relative path name
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fstream infile;
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infile.open(inRelativePathFilename.c_str(), ios::in);
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if(infile.is_open())
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{
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do
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{
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// Try to read the next description in
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TRDescription theNextDescription;
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theDescriptionRead = ReadDescription(infile, theNextDescription);
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// add it to the description list
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if(theDescriptionRead)
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{
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// Function is successful if at least one description was found
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outDescriptionList.push_back(theNextDescription);
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theSuccess = true;
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}
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} while(theDescriptionRead);
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infile.close();
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}
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return theSuccess;
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}
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bool TRFactory::WriteDescriptions(const string& inRelativePathFilename, const TRDescriptionList& inDescriptionList, const string& inHeader)
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{
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bool theSuccess = false;
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// Open the file for output
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fstream theOutfile;
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theOutfile.open(inRelativePathFilename.c_str(), ios::out);
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if(theOutfile.is_open())
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{
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// Optional: write header
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theOutfile << inHeader << std::endl;
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//theOutfile << "; Generated by Half-life. Do not edit unless you know what you are doing! " << std::endl;
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//theOutfile << std::endl;
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// For each description
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TRDescriptionList::const_iterator theIter;
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for(theIter = inDescriptionList.begin(); theIter != inDescriptionList.end(); theIter++)
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{
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// Write out that description
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const TRDescription& theDesc = *theIter;
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TRFactory::WriteDescription(theOutfile, theDesc);
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// Write out a blank line to make them look nice and separated
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theOutfile << std::endl;
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}
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theOutfile.close();
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theSuccess = true;
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}
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return theSuccess;
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}
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// TODO: Add case-insensitivity
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bool TRFactory::ReadDescription(fstream& infile, TRDescription& outDescription)
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{
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bool theSuccess = false;
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string currentLine;
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bool blockStarted = false;
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// for every line in the file
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while(!infile.eof())
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{
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if(readAndTrimNextLine(infile, currentLine))
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{
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// If line isn't a comment
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if(!lineIsAComment(currentLine))
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{
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// If we haven't started, is line of format: start <type> <name>? If so, set started and set those tags.
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if(!blockStarted)
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{
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blockStarted = readStartBlockLine(currentLine, outDescription);
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}
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// If we have started
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else
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{
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// Is line an end? If so, this function is over
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if(readEndBlockLine(currentLine))
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{
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break;
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}
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// else is line of tag = property format? If so, add it as pair
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else
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{
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// If not, print error and proceed
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if(readTagAndValueLine(currentLine, outDescription))
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{
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// Once we have read at least one tag-value pair, considered this a success
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theSuccess = true;
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}
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else
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{
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//printf("Error reading line of length %d: %s\n", currentLine.length(), currentLine.c_str());
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}
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}
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}
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}
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}
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}
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return theSuccess;
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}
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bool TRFactory::WriteDescription(fstream& outfile, const TRDescription& inDescription)
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{
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bool theSuccess = true;
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// Write out the start block
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outfile << "start" << " " << inDescription.GetType() << " " << inDescription.GetName() << std::endl;
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// Write out the property tags
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TRDescription::const_iterator theIter;
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for(theIter = inDescription.begin(); theIter != inDescription.end(); theIter++)
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{
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outfile << " " << theIter->first << " = " << theIter->second << std:: endl;
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}
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// Write out the end block.
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outfile << "end" << std::endl;
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return theSuccess;
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}
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bool TRFactory::readAndTrimNextLine(istream& inStream, string& outString)
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{
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char theLine[maxLineLength];
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bool theSuccess = false;
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inStream.getline(theLine, maxLineLength);
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outString = string(theLine);
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trimWhitespace(outString);
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// Return false if the line is empty when we're done
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if(outString.length() > 1)
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{
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theSuccess = true;
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}
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return theSuccess;
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}
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// Trim whitespace from string
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void TRFactory::trimWhitespace(string& inString)
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{
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// find first character that isn't a tab or space and save that offset
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//int firstNonWSChar = 0;
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//int i= 0;
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//int stringLength = inString.length();
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//while(i != (stringLength - 1) && ())
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//{
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//}
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// find last character that isn't a tab or space and save that offset
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// Build a new string representing string without whitespace
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// Set new string equal to inString
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}
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bool TRFactory::charIsWhiteSpace(char inChar)
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{
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bool theSuccess = false;
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if((inChar == ' ') || (inChar == '\t'))
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{
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theSuccess = true;
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}
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return theSuccess;
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}
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// Is the string a comment?
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bool TRFactory::lineIsAComment(const string& inString)
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{
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bool theLineIsAComment = false;
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int theLength = inString.length();
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if(theLength > 0)
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{
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// Loop through inString until a non-whitespace character is found
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for(int i = 0; i < theLength; i++)
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{
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char theFirstChar = inString[i];
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if(!charIsWhiteSpace(theFirstChar))
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{
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if((theFirstChar == '\'') || (theFirstChar == ';'))
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{
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theLineIsAComment = true;
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}
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break;
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}
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}
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}
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return theLineIsAComment;
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}
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// Read start block
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// Set the name and type of the description
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// Returns false if invalid format
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bool TRFactory::readStartBlockLine(const string& inString, TRDescription& outDescription)
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{
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bool theSuccess = false;
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char theType[maxLineLength];
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char theName[maxLineLength];
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memset(theType, ' ', maxLineLength);
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memset(theName, ' ', maxLineLength);
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// Read three tokens. There should be "start" <type> <name>
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if(sscanf(inString.c_str(), "start %s %s", theType, theName) == 2)
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{
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outDescription.SetName(theName);
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outDescription.SetType(theType);
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theSuccess = true;
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}
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return theSuccess;
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}
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// Read end block
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bool TRFactory::readEndBlockLine(const string& inString)
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{
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bool theSuccess = false;
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// There are some CRLF issues on Linux, hence this bit
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if(inString.length() >= 3)
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{
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string theString = inString.substr(0,3);
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if(theString == "end")
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{
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theSuccess = true;
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}
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else
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{
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//printf("TRFactory::readEndBlockLine() failed, found (%s)\n", theString.c_str());
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}
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}
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return theSuccess;
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}
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bool TRFactory::readTagAndValueLine(const string& inString, TRDescription& outDescription)
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{
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bool theSuccess = false;
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char theTag[maxLineLength];
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char theValue[maxLineLength];
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// Zero them out
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memset(theTag, ' ', maxLineLength);
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memset(theValue, ' ', maxLineLength);
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if((sscanf(inString.c_str(), "%s = %s", theTag, theValue)) == 2)
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{
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// Add it
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TRTagValuePair thePair(theTag, theValue);
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outDescription.AddPair(thePair);
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theSuccess = true;
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}
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return theSuccess;
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}
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