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->sp);
    }
    sectionParsers_.clear();
}

void SectionParserManager::parse(ifstrstream& 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;
        line = LeftTrim(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(), predict);
                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;
            }
            
        }
    }

}


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:	1765
Committed:	Mon Nov 22 20:55:52 2004 UTC (19 years, 7 months ago) by tim
File size:	5803 byte(s)
Log Message:	adding section parsers
#	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
28	namespace oopse {
29
30	SectionParserManager::~SectionParserManager() {
31	SectionParserManager::iterator i;
32	for (i = sectionParsers_.begin(); i != sectionParsers_.end(); ++i) {
33	delete (i->sp);
34	}
35	sectionParsers_.clear();
36	}
37
38	void SectionParserManager::parse(ifstrstream& input, ForceField& ff) {
39
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	line = LeftTrim(buffer);
53
54	//a line begins with "//" is comment
55	if ( line.empty() \|\| (line.size() >= 2 && line[0] == '/' && line[1] == '/')) {
56	continue;
57	} else {
58	StringTokenizer tokenizer(line);
59	if (tokenizer.countTokens() < 2) {
60	continue;
61	} else {
62	std::string keyword = tokenizer.nextToken();
63
64	if (keyword != "begin") {
65	continue;
66	}
67
68	std::string section = tokenizer.nextToken();
69
70	i = std::find_if(sectionParsers_.begin(), sectionParsers_.end(), predict);
71	if (i == sectionParsers_.end()){
72	//can not find corresponding section parser
73	std::cerr << "Can not find corresponding section parser for section: " << section << std::endl;
74	} else {
75	i->isActive = true;
76	i->lineNo = lineNo;
77	i->offset = input->tellg();
78	}
79
80	}
81	}
82
83
84	}
85
86	//invoke parser
87	for (i = sectionParsers_.begin(); i != sectionParsers_.end(); ++i) {
88	if (i->isActive) {
89	input->seekg(i->offset);
90	(i->sectionParser)->parse(input, ff, i->lineNo);
91	}
92	}
93
94	}
95
96	void SectionParserManager::push_front(SectionParser* sp) {
97	SectionParserManager::iterator i;
98	i = findSectionParser(sp->getSectionName());
99	if (i != sectionParsers_.end()) {
100	std::cerr << sp->getSectionName() << " section parser is alway existed" << std::endl;
101	return;
102	}
103
104	SectionParserContext context;
105
106	if (sectionParsers_.empty()) {
107	context.priority = beginPriority_;
108	} else {
109	context.priority = sectionParsers_.front().priority - priorityDifference_;
110	}
111
112	context.sectionParser = sp;
113	context.lineNo = 0;
114	context.offset = 0;
115	context.isActive = false;
116
117	}
118
119	void SectionParserManager::push_back(SectionParser* sp) {
120	SectionParserManager::iterator i;
121	i = findSectionParser(sp->getSectionName());
122	if (i != sectionParsers_.end()) {
123	std::cerr << sp->getSectionName() << " section parser is alway existed" << std::endl;
124	return;
125	}
126
127	SectionParserContext context;
128	if (sectionParsers_.empty()) {
129	context.priority = beginPriority_;
130	} else {
131	context.priority = sectionParsers_.back().priority + priorityDifference_;
132	}
133
134	context.sectionParser = sp;
135	context.lineNo = 0;
136	context.offset = 0;
137	context.isActive = false;
138
139	}
140
141	void SectionParserManager::insert(SectionParser* sp, int priority) {
142	SectionParserManager::iterator i;
143	i = findSectionParser(sp->getSectionName());
144	if (i != sectionParsers_.end()) {
145	std::cerr << sp->getSectionName() << " section parser is alway existed" << std::endl;
146	}
147
148	SectionParserContext context;
149	context.priority = priority;
150	context.sectionParser = sp;
151	context.lineNo = 0;
152	context.offset = 0;
153	context.isActive = false;
154
155	if (sectionParsers_.empty()) {
156	sectionParsers_.push_back(context);
157	} else {
158
159	for (i = sectionParsers_.begin(); i != sectionParsers_.end(); ++i) {
160	if (i->priority == priority) {
161	std::cerr << "Priority " << priority << " already used" << std::endl;
162	return;
163	} else if (i->priority > priority) {
164	sectionParsers_.insert(i, context);
165	break;
166	}
167
168	}
169	}
170
171	}
172
173
174	iterator SectionParserManager::findSectionParser(const std::string& sectionName) {
175	SectionParserManager::iterator i;
176	for (i = sectionParsers_.begin(); i != sectionParsers_.end(); ++i) {
177	if (i->sectionParser->getSectionName() == sectionName) {
178	break;
179	}
180	}
181
182	return i;
183	}
184
185	}