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, 7 months ago) by tim
File size:	6193 byte(s)
Log Message:	begin to fix bugs
#	Content
1	/*
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	#include "utils/Trim.hpp"
28
29	namespace oopse {
30
31	SectionParserManager::~SectionParserManager() {
32	SectionParserManager::iterator i;
33	for (i = sectionParsers_.begin(); i != sectionParsers_.end(); ++i) {
34	delete (i->sectionParser);
35	}
36	sectionParsers_.clear();
37	}
38
39	void SectionParserManager::parse(std::istream& input, ForceField& ff) {
40
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
54	std::string line = trimLeftCopy(buffer);
55	//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	i = std::find_if(sectionParsers_.begin(), sectionParsers_.end(), SameSectionParserFunctor(section));
72	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	i->offset = input.tellg();
79	}
80
81	}
82	}
83
84
85	}
86
87	//invoke parser
88	for (i = sectionParsers_.begin(); i != sectionParsers_.end(); ++i) {
89	if (i->isActive) {
90	//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	input.seekg(i->offset);
94	(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	sectionParsers_.push_front(context);
122	}
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	sectionParsers_.push_back(context);
145
146	}
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	SectionParserManager::iterator SectionParserManager::findSectionParser(const std::string& sectionName) {
182	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	}