Search/trunk/Outputter.cpp

/* ============================================================================
 * Douglas Thrift's Search Engine License
 *
 * Copyright (C) 2002-2004, 2008, Douglas Thrift. All Rights Reserved.
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *
 * 3. The end-user documentation included with the redistribution, if any, must
 *    include the following acknowledgment:
 *
 *       "This product includes software developed by Douglas Thrift
 *       (http://computers.douglasthrift.net/searchengine/)."
 *
 *    Alternately, this acknowledgment may appear in the software itself, if
 *    and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Douglas Thrift" and "Douglas Thrift's Search Engine" must not
 *    be used to endorse or promote products derived from this software without
 *    specific prior written permission.  For written permission, please visit
 *    http://www.douglasthrift.net/contact.cgi for contact information.
 *
 * 5. Products derived from this software may not be called "Douglas Thrift's
 *    Search Engine", nor may "Douglas Thrift's Search Engine" appear in their
 *    name, without prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 * ============================================================================
 */
// Douglas Thrift's Search Engine Outputter
//
// Douglas Thrift
//
// $Id$

#include "Outputter.hpp"

void Outputter::output(Searcher& searcher, size_t page)
{
        MultiSet pagesSet(searcher.getPages());

        numWebpages = pagesSet.size();
        numPages = (numWebpages + 9) / 10;

        string query(searcher.getQueryString());
        vector<string> common(searcher.getCommonUsed());

        MultiSetIterator itor(pagesSet.begin());

        for (size_t count(0); count < page * 10 && itor != pagesSet.end(); count++)
        {
                itor++;
        }

        for (short index(0); index < 10 && itor != pagesSet.end(); index++, itor++)
        {
                webpages.push_back(*itor);
        }

        this->query = searcher.getQuery().size() > 0;
        results = webpages.size() > 0;
        time = searcher.time();

        if (debug)
        {
                cerr << "query = " << this->query << "\n"
                        << "results = " << results << "\n"
                        << "time = " << duration() << "\n";
        }

        entities(query, '&', "&amp;");
        entities(query, '\"', "&quot;");
        entities(query, '<', "&lt;");
        entities(query, '>', "&gt;");

        string ignore(searcher.getIgnore());

        header(query, page, common, searcher.getAnd(), searcher.getOr(), ignore);

        if (results) body(); else if (this->query)
        {
                notfound(query, searcher.getQuery().size());
        }

        footer(query, page, common, searcher.getAnd(), searcher.getOr(), ignore);
}

void Outputter::header(const string& query, size_t page, const vector<string>&
        common, bool and_, bool or_, const string& ignore)
{
        ifstream fin(headerFile.c_str());
        string line;

        while (fin.good())
        {
                getline(fin, line);
                conditional(line, fin, "<?ifquery?>", this->query);
                conditional(line, fin, "<?ifresults?>", results);
                conditional(line, fin, "<?ifor?>", or_);
                conditional(line, fin, "<?ifand?>", and_);
                conditional(line, fin, "<?ifignore?>", ignore != "");
                conditional(line, fin, "<?ifcommon?>", common.size() == 1);
                conditional(line, fin, "<?ifmanycommon?>", common.size() > 1);
#ifndef _OpenSSL_
                tag(line, "<?version?>", programName + ' ' + programVersion + ' ' +
                        platform());
#else
                tag(line, "<?version?>", programName + ' ' + programVersion + ' ' +
                        platform() + ' ' + openssl());
#endif
                tag(line, "<?query?>", query);
                tag(line, "<?range?>", range(page));
                tag(line, "<?total?>", total());
                tag(line, "<?time?>", duration());
                tag(line, "<?pages?>", pages(query, page));
                tag(line, "<?ignore?>", ignore);
                tag(line, "<?common?>", common[0]);
                tag(line, "<?manycommon?>", manycommon(common));

                cout << line << (fin.good() ? "\n" : "");
        }

        fin.close();
}

void Outputter::body()
{
        for (size_t index = 0; index < webpages.size(); index++)
        {
                Ranker webpage(webpages[index]);
                string title(webpage.getTitle());

                if (title == "")
                {
                        title = webpage.getURL();

                        entities(title, '&', "&amp;");
                        entities(title, '\"', "&quot;");
                        entities(title, '<', "&lt;");
                        entities(title, '>', "&gt;");
                }

                string address(webpage.getURL()), sample(webpage.getSample()),
                        description(webpage.getDescription());
                ostringstream size;

                size.precision(0);
                size.setf(ios_base::fixed, ios_base::floatfield);

                size << double(webpage.getSize()) / double(1024) << "k";

                entities(address, '&', "&amp;");
                entities(address, '\"', "&quot;");
                entities(address, '<', "&lt;");
                entities(address, '>', "&gt;");

                ifstream fin(bodyFile.c_str());
                string line;

                while (fin.good())
                {
                        getline(fin, line);
                        conditional(line, fin, "<?ifdescription?>", description != "");
                        tag(line, "<?address?>", address);
                        tag(line, "<?title?>", title);
                        tag(line, "<?sample?>", sample);
                        tag(line, "<?description?>", description);
                        tag(line, "<?size?>", size.str());

                        cout << line << (fin.good() ? "\n" : "");
                }

                fin.close();
        }
}

void Outputter::footer(const string& query, size_t page, const vector<string>&
        common, bool and_, bool or_, const string& ignore)
{
        ifstream fin(footerFile.c_str());
        string line;

        while (fin.good())
        {
                getline(fin, line);
                conditional(line, fin, "<?ifquery?>", this->query);
                conditional(line, fin, "<?ifresults?>", results);
                conditional(line, fin, "<?ifor?>", or_);
                conditional(line, fin, "<?ifand?>", and_);
                conditional(line, fin, "<?ifignore?>", ignore != "");
                conditional(line, fin, "<?ifcommon?>", common.size() == 1);
                conditional(line, fin, "<?ifmanycommon?>", common.size() > 1);
#ifndef _OpenSSL_
                tag(line, "<?version?>", programName + ' ' + programVersion + ' ' +
                        platform());
#else
                tag(line, "<?version?>", programName + ' ' + programVersion + ' ' +
                        platform() + ' ' + openssl());
#endif
                tag(line, "<?query?>", query);
                tag(line, "<?range?>", range(page));
                tag(line, "<?total?>", total());
                tag(line, "<?time?>", duration());
                tag(line, "<?pages?>", pages(query, page));
                tag(line, "<?ignore?>", ignore);
                tag(line, "<?common?>", common[0]);
                tag(line, "<?manycommon?>", manycommon(common));

                cout << line << (fin.good() ? "\n" : "");
        }

        fin.close();
}

void Outputter::notfound(const string& query, size_t keywords)
{
        ifstream fin(notfoundFile.c_str());
        string line;

        while (fin.good())
        {
                getline(fin, line);
                conditional(line, fin, "<?ifmany?>", keywords > 1);
                tag(line, "<?query?>", query);

                cout << line << (fin.good() ? "\n" : "");
        }

        fin.close();
}

string Outputter::pages(string query, size_t page)
{
        entities(query, "&lt;", '<');
        entities(query, "&gt;", '>');
        entities(query, "&quot;", '\"');
        entities(query, "&amp;", '&');
        entities(query, '%', "%25");
        entities(query, '\t', "%09");
        entities(query, ' ', "%20");
        entities(query, '\"', "%22");
        entities(query, '#', "%23");
        entities(query, '$', "%24");
        entities(query, '&', "%26");
        entities(query, '\'', "%27");
        entities(query, '+', "%2B");
        entities(query, ',', "%2C");
        entities(query, '/', "%2F");
        entities(query, ':', "%3A");
        entities(query, ';', "%3B");
        entities(query, '<', "%3C");
        entities(query, '=', "%3D");
        entities(query, '>', "%3E");
        entities(query, '?', "%3F");
        entities(query, '@', "%40");
        entities(query, '[', "%5B");
        entities(query, ']', "%5D");
        entities(query, '\\', "%5C");
        entities(query, '^', "%5E");
        entities(query, '`', "%60");
        entities(query, '{', "%7B");
        entities(query, '|', "%7C");
        entities(query, '}', "%7D");
        entities(query, '~', "%7E");

        ifstream fin(pagesFile.c_str());
        string lines, line;

        while (fin.good())
        {
                getline(fin, line);
                conditional(line, fin, "<?ifprevious?>", page >= 1);
                conditional(line, fin, "<?ifpage?>", false);
                conditional(line, fin, "<?ifnum?>", false);
                conditional(line, fin, "<?ifnext?>", false);

                ostringstream previous;

                previous << page;

                tag(line, "<?query?>", query);
                tag(line, "<?previous?>", previous.str());

                lines += line + (fin.good() ? "\n" : "");
        }

        fin.close();
        fin.clear();

        for (size_t index(0); index < numPages; index++)
        {
                fin.open(pagesFile.c_str());

                while (fin.good())
                {
                        getline(fin, line);

                        if (index == page)
                        {
                                conditional(line, fin, "<?ifprevious?>", false);
                                conditional(line, fin, "<?ifpage?>", true);
                                conditional(line, fin, "<?ifnum?>", false);
                                conditional(line, fin, "<?ifnext?>", false);

                                ostringstream current;

                                current << index + 1;

                                tag(line, "<?page?>", current.str());
                        }
                        else
                        {
                                conditional(line, fin, "<?ifprevious?>", false);
                                conditional(line, fin, "<?ifpage?>", false);
                                conditional(line, fin, "<?ifnum?>", true);
                                conditional(line, fin, "<?ifnext?>", false);

                                ostringstream num;

                                num << index + 1;

                                tag(line, "<?query?>", query);
                                tag(line, "<?num?>", num.str());
                        }

                        lines += line + (fin.good() ? "\n" : "");
                }

                fin.close();
                fin.clear();
        }

        fin.open(pagesFile.c_str());

        while (fin.good())
        {
                getline(fin, line);
                conditional(line, fin, "<?ifprevious?>", false);
                conditional(line, fin, "<?ifpage?>", false);
                conditional(line, fin, "<?ifnum?>", false);
                conditional(line, fin, "<?ifnext?>", page + 2 <= numPages);

                ostringstream next;

                next << page + 2;

                tag(line, "<?query?>", query);
                tag(line, "<?next?>", next.str());

                lines += line + (fin.good() ? "\n" : "");
        }

        fin.close();

        return lines;
}

string Outputter::range(size_t page)
{
        size_t bottom(page * 10 + 1), top(numWebpages > page * 10 + 10 ? page *
                10 + 10 : numWebpages);
        ostringstream range;

        range << bottom << " - " << top;

        return range.str();
}

string Outputter::total()
{
        ostringstream total;

        total << numWebpages;

        return total.str();
}

string Outputter::duration()
{
        ostringstream duration;

        duration.precision(2);
        duration.setf(ios_base::fixed, ios_base::floatfield);

        duration << time;

        return duration.str();
}

string Outputter::manycommon(const vector<string>& common)
{
        string line;

        for (size_t index = 0; index < common.size(); index++)
        {
                line += common[index];

                if (index != common.size() - 1) line += ' ';
        }

        return line;
}

void Outputter::tag(string& line, const char* tag, const string& replacement)
{
        size_t begin(0);

        while (begin < line.length())
        {
                int spot(line.find(tag, begin));

                if (spot != string::npos)
                {
                        line.replace(spot, strlen(tag), replacement);
                }
                else break;

                begin = spot + replacement.length();
        }
}

void Outputter::conditional(string& line, ifstream& fin, const char* tag, bool
        condition)
{
        size_t begin(0);

        while (begin < line.length())
        {
                size_t start(line.find(tag, begin)), finish(line.find("<?endif?>",
                        start));

                if (start == string::npos) break;

                string next;

                while (finish == string::npos)
                {
                        getline(fin, next);

                        line += '\n' + next;

                        finish = line.find("<?endif?>", start);
                }

                if (condition)
                {
                        line.erase(start, strlen(tag));
                        line.erase(finish - strlen(tag), 9);

                        begin = finish - strlen(tag) - 9;
                }
                else
                {
                        line.erase(start, finish - start + 9);

                        begin = start;
                }
        }
}
Revision:	372
Committed:	2008-08-23T04:00:12-07:00 (16 years, 9 months ago) by douglas
File size:	12200 byte(s)
Log Message:	Update copyright dates.
#	Content
1	/* ============================================================================
2	* Douglas Thrift's Search Engine License
3	*
4	* Copyright (C) 2002-2004, 2008, Douglas Thrift. All Rights Reserved.
5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions are met:
7	*
8	* 1. Redistributions of source code must retain the above copyright notice,
9	* this list of conditions and the following disclaimer.
10	*
11	* 2. Redistributions in binary form must reproduce the above copyright notice,
12	* this list of conditions and the following disclaimer in the documentation
13	* and/or other materials provided with the distribution.
14	*
15	* 3. The end-user documentation included with the redistribution, if any, must
16	* include the following acknowledgment:
17	*
18	* "This product includes software developed by Douglas Thrift
19	* (http://computers.douglasthrift.net/searchengine/)."
20	*
21	* Alternately, this acknowledgment may appear in the software itself, if
22	* and wherever such third-party acknowledgments normally appear.
23	*
24	* 4. The names "Douglas Thrift" and "Douglas Thrift's Search Engine" must not
25	* be used to endorse or promote products derived from this software without
26	* specific prior written permission. For written permission, please visit
27	* http://www.douglasthrift.net/contact.cgi for contact information.
28	*
29	* 5. Products derived from this software may not be called "Douglas Thrift's
30	* Search Engine", nor may "Douglas Thrift's Search Engine" appear in their
31	* name, without prior written permission.
32	*
33	* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
34	* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
35	* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
36	* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
37	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
38	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
39	* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
40	* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
41	* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
42	* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
43	* ============================================================================
44	*/
45	// Douglas Thrift's Search Engine Outputter
46	//
47	// Douglas Thrift
48	//
49	// $Id$
50
51	#include "Outputter.hpp"
52
53	void Outputter::output(Searcher& searcher, size_t page)
54	{
55	MultiSet pagesSet(searcher.getPages());
56
57	numWebpages = pagesSet.size();
58	numPages = (numWebpages + 9) / 10;
59
60	string query(searcher.getQueryString());
61	vector<string> common(searcher.getCommonUsed());
62
63	MultiSetIterator itor(pagesSet.begin());
64
65	for (size_t count(0); count < page * 10 && itor != pagesSet.end(); count++)
66	{
67	itor++;
68	}
69
70	for (short index(0); index < 10 && itor != pagesSet.end(); index++, itor++)
71	{
72	webpages.push_back(*itor);
73	}
74
75	this->query = searcher.getQuery().size() > 0;
76	results = webpages.size() > 0;
77	time = searcher.time();
78
79	if (debug)
80	{
81	cerr << "query = " << this->query << "\n"
82	<< "results = " << results << "\n"
83	<< "time = " << duration() << "\n";
84	}
85
86	entities(query, '&', "&");
87	entities(query, '\"', """);
88	entities(query, '<', "<");
89	entities(query, '>', ">");
90
91	string ignore(searcher.getIgnore());
92
93	header(query, page, common, searcher.getAnd(), searcher.getOr(), ignore);
94
95	if (results) body(); else if (this->query)
96	{
97	notfound(query, searcher.getQuery().size());
98	}
99
100	footer(query, page, common, searcher.getAnd(), searcher.getOr(), ignore);
101	}
102
103	void Outputter::header(const string& query, size_t page, const vector<string>&
104	common, bool and_, bool or_, const string& ignore)
105	{
106	ifstream fin(headerFile.c_str());
107	string line;
108
109	while (fin.good())
110	{
111	getline(fin, line);
112	conditional(line, fin, "<?ifquery?>", this->query);
113	conditional(line, fin, "<?ifresults?>", results);
114	conditional(line, fin, "<?ifor?>", or_);
115	conditional(line, fin, "<?ifand?>", and_);
116	conditional(line, fin, "<?ifignore?>", ignore != "");
117	conditional(line, fin, "<?ifcommon?>", common.size() == 1);
118	conditional(line, fin, "<?ifmanycommon?>", common.size() > 1);
119	#ifndef _OpenSSL_
120	tag(line, "<?version?>", programName + ' ' + programVersion + ' ' +
121	platform());
122	#else
123	tag(line, "<?version?>", programName + ' ' + programVersion + ' ' +
124	platform() + ' ' + openssl());
125	#endif
126	tag(line, "<?query?>", query);
127	tag(line, "<?range?>", range(page));
128	tag(line, "<?total?>", total());
129	tag(line, "<?time?>", duration());
130	tag(line, "<?pages?>", pages(query, page));
131	tag(line, "<?ignore?>", ignore);
132	tag(line, "<?common?>", common[0]);
133	tag(line, "<?manycommon?>", manycommon(common));
134
135	cout << line << (fin.good() ? "\n" : "");
136	}
137
138	fin.close();
139	}
140
141	void Outputter::body()
142	{
143	for (size_t index = 0; index < webpages.size(); index++)
144	{
145	Ranker webpage(webpages[index]);
146	string title(webpage.getTitle());
147
148	if (title == "")
149	{
150	title = webpage.getURL();
151
152	entities(title, '&', "&");
153	entities(title, '\"', """);
154	entities(title, '<', "<");
155	entities(title, '>', ">");
156	}
157
158	string address(webpage.getURL()), sample(webpage.getSample()),
159	description(webpage.getDescription());
160	ostringstream size;
161
162	size.precision(0);
163	size.setf(ios_base::fixed, ios_base::floatfield);
164
165	size << double(webpage.getSize()) / double(1024) << "k";
166
167	entities(address, '&', "&");
168	entities(address, '\"', """);
169	entities(address, '<', "<");
170	entities(address, '>', ">");
171
172	ifstream fin(bodyFile.c_str());
173	string line;
174
175	while (fin.good())
176	{
177	getline(fin, line);
178	conditional(line, fin, "<?ifdescription?>", description != "");
179	tag(line, "<?address?>", address);
180	tag(line, "<?title?>", title);
181	tag(line, "<?sample?>", sample);
182	tag(line, "<?description?>", description);
183	tag(line, "<?size?>", size.str());
184
185	cout << line << (fin.good() ? "\n" : "");
186	}
187
188	fin.close();
189	}
190	}
191
192	void Outputter::footer(const string& query, size_t page, const vector<string>&
193	common, bool and_, bool or_, const string& ignore)
194	{
195	ifstream fin(footerFile.c_str());
196	string line;
197
198	while (fin.good())
199	{
200	getline(fin, line);
201	conditional(line, fin, "<?ifquery?>", this->query);
202	conditional(line, fin, "<?ifresults?>", results);
203	conditional(line, fin, "<?ifor?>", or_);
204	conditional(line, fin, "<?ifand?>", and_);
205	conditional(line, fin, "<?ifignore?>", ignore != "");
206	conditional(line, fin, "<?ifcommon?>", common.size() == 1);
207	conditional(line, fin, "<?ifmanycommon?>", common.size() > 1);
208	#ifndef _OpenSSL_
209	tag(line, "<?version?>", programName + ' ' + programVersion + ' ' +
210	platform());
211	#else
212	tag(line, "<?version?>", programName + ' ' + programVersion + ' ' +
213	platform() + ' ' + openssl());
214	#endif
215	tag(line, "<?query?>", query);
216	tag(line, "<?range?>", range(page));
217	tag(line, "<?total?>", total());
218	tag(line, "<?time?>", duration());
219	tag(line, "<?pages?>", pages(query, page));
220	tag(line, "<?ignore?>", ignore);
221	tag(line, "<?common?>", common[0]);
222	tag(line, "<?manycommon?>", manycommon(common));
223
224	cout << line << (fin.good() ? "\n" : "");
225	}
226
227	fin.close();
228	}
229
230	void Outputter::notfound(const string& query, size_t keywords)
231	{
232	ifstream fin(notfoundFile.c_str());
233	string line;
234
235	while (fin.good())
236	{
237	getline(fin, line);
238	conditional(line, fin, "<?ifmany?>", keywords > 1);
239	tag(line, "<?query?>", query);
240
241	cout << line << (fin.good() ? "\n" : "");
242	}
243
244	fin.close();
245	}
246
247	string Outputter::pages(string query, size_t page)
248	{
249	entities(query, "<", '<');
250	entities(query, ">", '>');
251	entities(query, """, '\"');
252	entities(query, "&", '&');
253	entities(query, '%', "%25");
254	entities(query, '\t', "%09");
255	entities(query, ' ', "%20");
256	entities(query, '\"', "%22");
257	entities(query, '#', "%23");
258	entities(query, '$', "%24");
259	entities(query, '&', "%26");
260	entities(query, '\'', "%27");
261	entities(query, '+', "%2B");
262	entities(query, ',', "%2C");
263	entities(query, '/', "%2F");
264	entities(query, ':', "%3A");
265	entities(query, ';', "%3B");
266	entities(query, '<', "%3C");
267	entities(query, '=', "%3D");
268	entities(query, '>', "%3E");
269	entities(query, '?', "%3F");
270	entities(query, '@', "%40");
271	entities(query, '[', "%5B");
272	entities(query, ']', "%5D");
273	entities(query, '\\', "%5C");
274	entities(query, '^', "%5E");
275	entities(query, '`', "%60");
276	entities(query, '{', "%7B");
277	entities(query, '\|', "%7C");
278	entities(query, '}', "%7D");
279	entities(query, '~', "%7E");
280
281	ifstream fin(pagesFile.c_str());
282	string lines, line;
283
284	while (fin.good())
285	{
286	getline(fin, line);
287	conditional(line, fin, "<?ifprevious?>", page >= 1);
288	conditional(line, fin, "<?ifpage?>", false);
289	conditional(line, fin, "<?ifnum?>", false);
290	conditional(line, fin, "<?ifnext?>", false);
291
292	ostringstream previous;
293
294	previous << page;
295
296	tag(line, "<?query?>", query);
297	tag(line, "<?previous?>", previous.str());
298
299	lines += line + (fin.good() ? "\n" : "");
300	}
301
302	fin.close();
303	fin.clear();
304
305	for (size_t index(0); index < numPages; index++)
306	{
307	fin.open(pagesFile.c_str());
308
309	while (fin.good())
310	{
311	getline(fin, line);
312
313	if (index == page)
314	{
315	conditional(line, fin, "<?ifprevious?>", false);
316	conditional(line, fin, "<?ifpage?>", true);
317	conditional(line, fin, "<?ifnum?>", false);
318	conditional(line, fin, "<?ifnext?>", false);
319
320	ostringstream current;
321
322	current << index + 1;
323
324	tag(line, "<?page?>", current.str());
325	}
326	else
327	{
328	conditional(line, fin, "<?ifprevious?>", false);
329	conditional(line, fin, "<?ifpage?>", false);
330	conditional(line, fin, "<?ifnum?>", true);
331	conditional(line, fin, "<?ifnext?>", false);
332
333	ostringstream num;
334
335	num << index + 1;
336
337	tag(line, "<?query?>", query);
338	tag(line, "<?num?>", num.str());
339	}
340
341	lines += line + (fin.good() ? "\n" : "");
342	}
343
344	fin.close();
345	fin.clear();
346	}
347
348	fin.open(pagesFile.c_str());
349
350	while (fin.good())
351	{
352	getline(fin, line);
353	conditional(line, fin, "<?ifprevious?>", false);
354	conditional(line, fin, "<?ifpage?>", false);
355	conditional(line, fin, "<?ifnum?>", false);
356	conditional(line, fin, "<?ifnext?>", page + 2 <= numPages);
357
358	ostringstream next;
359
360	next << page + 2;
361
362	tag(line, "<?query?>", query);
363	tag(line, "<?next?>", next.str());
364
365	lines += line + (fin.good() ? "\n" : "");
366	}
367
368	fin.close();
369
370	return lines;
371	}
372
373	string Outputter::range(size_t page)
374	{
375	size_t bottom(page * 10 + 1), top(numWebpages > page * 10 + 10 ? page *
376	10 + 10 : numWebpages);
377	ostringstream range;
378
379	range << bottom << " - " << top;
380
381	return range.str();
382	}
383
384	string Outputter::total()
385	{
386	ostringstream total;
387
388	total << numWebpages;
389
390	return total.str();
391	}
392
393	string Outputter::duration()
394	{
395	ostringstream duration;
396
397	duration.precision(2);
398	duration.setf(ios_base::fixed, ios_base::floatfield);
399
400	duration << time;
401
402	return duration.str();
403	}
404
405	string Outputter::manycommon(const vector<string>& common)
406	{
407	string line;
408
409	for (size_t index = 0; index < common.size(); index++)
410	{
411	line += common[index];
412
413	if (index != common.size() - 1) line += ' ';
414	}
415
416	return line;
417	}
418
419	void Outputter::tag(string& line, const char* tag, const string& replacement)
420	{
421	size_t begin(0);
422
423	while (begin < line.length())
424	{
425	int spot(line.find(tag, begin));
426
427	if (spot != string::npos)
428	{
429	line.replace(spot, strlen(tag), replacement);
430	}
431	else break;
432
433	begin = spot + replacement.length();
434	}
435	}
436
437	void Outputter::conditional(string& line, ifstream& fin, const char* tag, bool
438	condition)
439	{
440	size_t begin(0);
441
442	while (begin < line.length())
443	{
444	size_t start(line.find(tag, begin)), finish(line.find("<?endif?>",
445	start));
446
447	if (start == string::npos) break;
448
449	string next;
450
451	while (finish == string::npos)
452	{
453	getline(fin, next);
454
455	line += '\n' + next;
456
457	finish = line.find("<?endif?>", start);
458	}
459
460	if (condition)
461	{
462	line.erase(start, strlen(tag));
463	line.erase(finish - strlen(tag), 9);
464
465	begin = finish - strlen(tag) - 9;
466	}
467	else
468	{
469	line.erase(start, finish - start + 9);
470
471	begin = start;
472	}
473	}
474	}