src/io/SectionParserManager.cpp

/*
 * Copyright (C) 2000-2004  Object Oriented Parallel Simulation Engine (OOPSE) project
 * 
 * Contact: oopse@oopse.org
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation; either version 2.1
 * of the License, or (at your option) any later version.
 * All we ask is that proper credit is given for our work, which includes
 * - but is not limited to - adding the above copyright notice to the beginning
 * of your source code files, and to any copyright notice that you may distribute
 * with programs based on this work.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 */

#include "io/SectionParserManager.hpp"
#include "utils/Trim.hpp"

namespace oopse {

SectionParserManager::~SectionParserManager() {
    SectionParserManager::iterator i;
    for (i = sectionParsers_.begin(); i != sectionParsers_.end(); ++i) {
        delete (i->sectionParser);
    }
    sectionParsers_.clear();
}

void SectionParserManager::parse(std::istream& input, ForceField& ff) {

    //reset active flags
    SectionParserManager::iterator i;
    for (i = sectionParsers_.begin(); i != sectionParsers_.end(); ++i) {
        i->isActive = false;
    }

    const int bufferSize = 65535;
    char buffer[bufferSize];
    int lineNo = 0;
    //scan through the input stream and find section names        
    while(input.getline(buffer, bufferSize)) {
        ++lineNo;
        
        std::string line = trimLeftCopy(buffer);
        //a line begins with "//" is comment
        if ( line.empty() || (line.size() >= 2 && line[0] == '/' && line[1] == '/')) {
            continue;
        } else {        
            StringTokenizer tokenizer(line);
            if (tokenizer.countTokens() < 2) {
                continue;
            } else {
                std::string keyword = tokenizer.nextToken();

                if (keyword != "begin") {
                    continue;
                }

                std::string section = tokenizer.nextToken();

                i = std::find_if(sectionParsers_.begin(), sectionParsers_.end(), SameSectionParserFunctor(section));
                if (i == sectionParsers_.end()){
                    //can not find corresponding section parser
                    std::cerr << "Can not find corresponding section parser for section: " << section << std::endl;
                } else {
                    i->isActive = true;
                    i->lineNo = lineNo;
                    i->offset = input.tellg();
                }
                
            }
        }

        
    }

    //invoke parser
    for (i = sectionParsers_.begin(); i != sectionParsers_.end(); ++i) {
        if (i->isActive) {
            //C++ standard does not guarantee seekg  reset EOF, in that case, seekg will fail
            //It is always a good idea to call clear() before seek
            input.clear();            
            input.seekg(i->offset);
            (i->sectionParser)->parse(input, ff, i->lineNo);
        }
    }
    
}

void SectionParserManager::push_front(SectionParser* sp) {
    SectionParserManager::iterator i;
    i = findSectionParser(sp->getSectionName());
    if (i != sectionParsers_.end()) {
        std::cerr << sp->getSectionName() << " section parser is alway existed" << std::endl;
        return;
    }
    
    SectionParserContext context;
    
    if (sectionParsers_.empty()) {
        context.priority = beginPriority_;
    } else {
        context.priority = sectionParsers_.front().priority - priorityDifference_;
    }

    context.sectionParser = sp;
    context.lineNo = 0;
    context.offset = 0;
    context.isActive = false;

    sectionParsers_.push_front(context);
}

void SectionParserManager::push_back(SectionParser* sp) {
    SectionParserManager::iterator i;
    i = findSectionParser(sp->getSectionName());
    if (i != sectionParsers_.end()) {
        std::cerr << sp->getSectionName() << " section parser is alway existed" << std::endl;
        return;
    }

    SectionParserContext context;    
    if (sectionParsers_.empty()) {
        context.priority = beginPriority_;
    } else {
        context.priority = sectionParsers_.back().priority + priorityDifference_;
    }

    context.sectionParser = sp;
    context.lineNo = 0;
    context.offset = 0;
    context.isActive = false;

    sectionParsers_.push_back(context);

}

void SectionParserManager::insert(SectionParser* sp, int priority) {
    SectionParserManager::iterator i;
    i = findSectionParser(sp->getSectionName());
    if (i != sectionParsers_.end()) {
        std::cerr << sp->getSectionName() << " section parser is alway existed" << std::endl;
    }

    SectionParserContext context;    
    context.priority = priority;
    context.sectionParser = sp;
    context.lineNo = 0;
    context.offset = 0;
    context.isActive = false;

    if (sectionParsers_.empty()) {
        sectionParsers_.push_back(context);
    } else {

        for (i = sectionParsers_.begin(); i != sectionParsers_.end(); ++i) {
            if (i->priority == priority) {
                 std::cerr << "Priority " << priority << " already used" << std::endl;
                 return;
            } else if (i->priority > priority) {
                sectionParsers_.insert(i, context);
                break;
            }
            
        }
    }

}


SectionParserManager::iterator SectionParserManager::findSectionParser(const std::string& sectionName) {
    SectionParserManager::iterator i;
    for (i = sectionParsers_.begin(); i != sectionParsers_.end(); ++i) {
        if (i->sectionParser->getSectionName() == sectionName) {
            break;
        }
    }

    return i;
}

}
Revision:	1841
Committed:	Fri Dec 3 17:59:45 2004 UTC (19 years, 9 months ago) by tim
File size:	6193 byte(s)
Log Message:	begin to fix bugs
#	User	Rev	Content
1	tim	1765	/*
2			* Copyright (C) 2000-2004 Object Oriented Parallel Simulation Engine (OOPSE) project
3			*
4			* Contact: oopse@oopse.org
5			*
6			* This program is free software; you can redistribute it and/or
7			* modify it under the terms of the GNU Lesser General Public License
8			* as published by the Free Software Foundation; either version 2.1
9			* of the License, or (at your option) any later version.
10			* All we ask is that proper credit is given for our work, which includes
11			* - but is not limited to - adding the above copyright notice to the beginning
12			* of your source code files, and to any copyright notice that you may distribute
13			* with programs based on this work.
14			*
15			* This program is distributed in the hope that it will be useful,
16			* but WITHOUT ANY WARRANTY; without even the implied warranty of
17			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18			* GNU Lesser General Public License for more details.
19			*
20			* You should have received a copy of the GNU Lesser General Public License
21			* along with this program; if not, write to the Free Software
22			* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
23			*
24			*/
25
26			#include "io/SectionParserManager.hpp"
27	tim	1840	#include "utils/Trim.hpp"
28	tim	1765
29			namespace oopse {
30
31			SectionParserManager::~SectionParserManager() {
32			SectionParserManager::iterator i;
33			for (i = sectionParsers_.begin(); i != sectionParsers_.end(); ++i) {
34	tim	1789	delete (i->sectionParser);
35	tim	1765	}
36			sectionParsers_.clear();
37			}
38
39	tim	1789	void SectionParserManager::parse(std::istream& input, ForceField& ff) {
40	tim	1765
41			//reset active flags
42			SectionParserManager::iterator i;
43			for (i = sectionParsers_.begin(); i != sectionParsers_.end(); ++i) {
44			i->isActive = false;
45			}
46
47			const int bufferSize = 65535;
48			char buffer[bufferSize];
49			int lineNo = 0;
50			//scan through the input stream and find section names
51			while(input.getline(buffer, bufferSize)) {
52			++lineNo;
53	tim	1840
54			std::string line = trimLeftCopy(buffer);
55	tim	1765	//a line begins with "//" is comment
56			if ( line.empty() \|\| (line.size() >= 2 && line[0] == '/' && line[1] == '/')) {
57			continue;
58			} else {
59			StringTokenizer tokenizer(line);
60			if (tokenizer.countTokens() < 2) {
61			continue;
62			} else {
63			std::string keyword = tokenizer.nextToken();
64
65			if (keyword != "begin") {
66			continue;
67			}
68
69			std::string section = tokenizer.nextToken();
70
71	tim	1801	i = std::find_if(sectionParsers_.begin(), sectionParsers_.end(), SameSectionParserFunctor(section));
72	tim	1765	if (i == sectionParsers_.end()){
73			//can not find corresponding section parser
74			std::cerr << "Can not find corresponding section parser for section: " << section << std::endl;
75			} else {
76			i->isActive = true;
77			i->lineNo = lineNo;
78	tim	1790	i->offset = input.tellg();
79	tim	1765	}
80
81			}
82			}
83
84
85			}
86
87			//invoke parser
88			for (i = sectionParsers_.begin(); i != sectionParsers_.end(); ++i) {
89			if (i->isActive) {
90	tim	1841	//C++ standard does not guarantee seekg reset EOF, in that case, seekg will fail
91			//It is always a good idea to call clear() before seek
92			input.clear();
93	tim	1790	input.seekg(i->offset);
94	tim	1765	(i->sectionParser)->parse(input, ff, i->lineNo);
95			}
96			}
97
98			}
99
100			void SectionParserManager::push_front(SectionParser* sp) {
101			SectionParserManager::iterator i;
102			i = findSectionParser(sp->getSectionName());
103			if (i != sectionParsers_.end()) {
104			std::cerr << sp->getSectionName() << " section parser is alway existed" << std::endl;
105			return;
106			}
107
108			SectionParserContext context;
109
110			if (sectionParsers_.empty()) {
111			context.priority = beginPriority_;
112			} else {
113			context.priority = sectionParsers_.front().priority - priorityDifference_;
114			}
115
116			context.sectionParser = sp;
117			context.lineNo = 0;
118			context.offset = 0;
119			context.isActive = false;
120
121	tim	1840	sectionParsers_.push_front(context);
122	tim	1765	}
123
124			void SectionParserManager::push_back(SectionParser* sp) {
125			SectionParserManager::iterator i;
126			i = findSectionParser(sp->getSectionName());
127			if (i != sectionParsers_.end()) {
128			std::cerr << sp->getSectionName() << " section parser is alway existed" << std::endl;
129			return;
130			}
131
132			SectionParserContext context;
133			if (sectionParsers_.empty()) {
134			context.priority = beginPriority_;
135			} else {
136			context.priority = sectionParsers_.back().priority + priorityDifference_;
137			}
138
139			context.sectionParser = sp;
140			context.lineNo = 0;
141			context.offset = 0;
142			context.isActive = false;
143
144	tim	1840	sectionParsers_.push_back(context);
145
146	tim	1765	}
147
148			void SectionParserManager::insert(SectionParser* sp, int priority) {
149			SectionParserManager::iterator i;
150			i = findSectionParser(sp->getSectionName());
151			if (i != sectionParsers_.end()) {
152			std::cerr << sp->getSectionName() << " section parser is alway existed" << std::endl;
153			}
154
155			SectionParserContext context;
156			context.priority = priority;
157			context.sectionParser = sp;
158			context.lineNo = 0;
159			context.offset = 0;
160			context.isActive = false;
161
162			if (sectionParsers_.empty()) {
163			sectionParsers_.push_back(context);
164			} else {
165
166			for (i = sectionParsers_.begin(); i != sectionParsers_.end(); ++i) {
167			if (i->priority == priority) {
168			std::cerr << "Priority " << priority << " already used" << std::endl;
169			return;
170			} else if (i->priority > priority) {
171			sectionParsers_.insert(i, context);
172			break;
173			}
174
175			}
176			}
177
178			}
179
180
181	tim	1789	SectionParserManager::iterator SectionParserManager::findSectionParser(const std::string& sectionName) {
182	tim	1765	SectionParserManager::iterator i;
183			for (i = sectionParsers_.begin(); i != sectionParsers_.end(); ++i) {
184			if (i->sectionParser->getSectionName() == sectionName) {
185			break;
186			}
187			}
188
189			return i;
190			}
191
192			}