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"

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;
        /**@todo implement trimLeft() */
        //std::string line = LeftTrim(buffer);
        std::string line= 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) {
            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;

}

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;

}

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:	1801
Committed:	Tue Nov 30 04:43:29 2004 UTC (19 years, 7 months ago) by tim
File size:	5949 byte(s)
Log Message:	Section Parsers get compiled
#	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
28			namespace oopse {
29
30			SectionParserManager::~SectionParserManager() {
31			SectionParserManager::iterator i;
32			for (i = sectionParsers_.begin(); i != sectionParsers_.end(); ++i) {
33	tim	1789	delete (i->sectionParser);
34	tim	1765	}
35			sectionParsers_.clear();
36			}
37
38	tim	1789	void SectionParserManager::parse(std::istream& input, ForceField& ff) {
39	tim	1765
40			//reset active flags
41			SectionParserManager::iterator i;
42			for (i = sectionParsers_.begin(); i != sectionParsers_.end(); ++i) {
43			i->isActive = false;
44			}
45
46			const int bufferSize = 65535;
47			char buffer[bufferSize];
48			int lineNo = 0;
49			//scan through the input stream and find section names
50			while(input.getline(buffer, bufferSize)) {
51			++lineNo;
52	tim	1789	/*@todo implement trimLeft() /
53			//std::string line = LeftTrim(buffer);
54			std::string line= 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	1790	input.seekg(i->offset);
91	tim	1765	(i->sectionParser)->parse(input, ff, i->lineNo);
92			}
93			}
94
95			}
96
97			void SectionParserManager::push_front(SectionParser* sp) {
98			SectionParserManager::iterator i;
99			i = findSectionParser(sp->getSectionName());
100			if (i != sectionParsers_.end()) {
101			std::cerr << sp->getSectionName() << " section parser is alway existed" << std::endl;
102			return;
103			}
104
105			SectionParserContext context;
106
107			if (sectionParsers_.empty()) {
108			context.priority = beginPriority_;
109			} else {
110			context.priority = sectionParsers_.front().priority - priorityDifference_;
111			}
112
113			context.sectionParser = sp;
114			context.lineNo = 0;
115			context.offset = 0;
116			context.isActive = false;
117
118			}
119
120			void SectionParserManager::push_back(SectionParser* sp) {
121			SectionParserManager::iterator i;
122			i = findSectionParser(sp->getSectionName());
123			if (i != sectionParsers_.end()) {
124			std::cerr << sp->getSectionName() << " section parser is alway existed" << std::endl;
125			return;
126			}
127
128			SectionParserContext context;
129			if (sectionParsers_.empty()) {
130			context.priority = beginPriority_;
131			} else {
132			context.priority = sectionParsers_.back().priority + priorityDifference_;
133			}
134
135			context.sectionParser = sp;
136			context.lineNo = 0;
137			context.offset = 0;
138			context.isActive = false;
139
140			}
141
142			void SectionParserManager::insert(SectionParser* sp, int priority) {
143			SectionParserManager::iterator i;
144			i = findSectionParser(sp->getSectionName());
145			if (i != sectionParsers_.end()) {
146			std::cerr << sp->getSectionName() << " section parser is alway existed" << std::endl;
147			}
148
149			SectionParserContext context;
150			context.priority = priority;
151			context.sectionParser = sp;
152			context.lineNo = 0;
153			context.offset = 0;
154			context.isActive = false;
155
156			if (sectionParsers_.empty()) {
157			sectionParsers_.push_back(context);
158			} else {
159
160			for (i = sectionParsers_.begin(); i != sectionParsers_.end(); ++i) {
161			if (i->priority == priority) {
162			std::cerr << "Priority " << priority << " already used" << std::endl;
163			return;
164			} else if (i->priority > priority) {
165			sectionParsers_.insert(i, context);
166			break;
167			}
168
169			}
170			}
171
172			}
173
174
175	tim	1789	SectionParserManager::iterator SectionParserManager::findSectionParser(const std::string& sectionName) {
176	tim	1765	SectionParserManager::iterator i;
177			for (i = sectionParsers_.begin(); i != sectionParsers_.end(); ++i) {
178			if (i->sectionParser->getSectionName() == sectionName) {
179			break;
180			}
181			}
182
183			return i;
184			}
185
186			}