trunk/Search/Outputer.cpp

/* ============================================================================
 * Douglas Thrift's Search Engine License
 *
 * Copyright (C) 2002-2004, 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 Outputer
//
// Douglas Thrift
//
// $Id$

#include "Outputer.h"

Outputer::Outputer(const string& headerFile, const string& bodyFile, const
        string& footerFile, const string& notfoundFile, const string& pagesFile)
{
        this->headerFile = headerFile;
        this->bodyFile = bodyFile;
        this->footerFile = footerFile;
        this->notfoundFile = notfoundFile;
        this->pagesFile = pagesFile;
}

void Outputer::output(Searcher& searcher, unsigned 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 (int count = 0; count < page * 10 && itor != pagesSet.end(); count++)
        {
                itor++;
        }

        for (int 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 Outputer::header(const string& query, unsigned page, 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 Outputer::body()
{
        for (int 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();
                string sample = webpage.getSample();
                string 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 Outputer::footer(const string& query, unsigned page, 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 Outputer::notfound(const string& query, unsigned 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 Outputer::pages(string query, unsigned 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");

        string lines;

        ifstream fin(pagesFile.c_str());

        string 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 (int 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 Outputer::range(unsigned page)
{
        unsigned bottom = page * 10 + 1;
        unsigned top = numWebpages > page * 10 + 10 ? page * 10 + 10 : numWebpages;
        ostringstream range;

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

        return range.str();
}

string Outputer::total()
{
        ostringstream total;

        total << numWebpages;

        return total.str();
}

string Outputer::duration()
{
        ostringstream duration;

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

        return duration.str();
}

string Outputer::manycommon(vector<string> common)
{
        string line;

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

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

        return line;
}

void Outputer::tag(string& line, char* tag, const string& replacement)
{
        int 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 Outputer::conditional(string& line, ifstream& fin, char* tag, bool
        condition)
{
        unsigned begin = 0;
        while (begin < line.length())
        {
                unsigned start = line.find(tag, begin);
                unsigned 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:	331
Committed:	2004-04-05T15:50:25-07:00 (21 years, 2 months ago) by Douglas Thrift
File size:	12538 byte(s)
Log Message:	It's Subversion time!
#	Content
1	/* ============================================================================
2	* Douglas Thrift's Search Engine License
3	*
4	* Copyright (C) 2002-2004, 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 Outputer
46	//
47	// Douglas Thrift
48	//
49	// $Id$
50
51	#include "Outputer.h"
52
53	Outputer::Outputer(const string& headerFile, const string& bodyFile, const
54	string& footerFile, const string& notfoundFile, const string& pagesFile)
55	{
56	this->headerFile = headerFile;
57	this->bodyFile = bodyFile;
58	this->footerFile = footerFile;
59	this->notfoundFile = notfoundFile;
60	this->pagesFile = pagesFile;
61	}
62
63	void Outputer::output(Searcher& searcher, unsigned page)
64	{
65	MultiSet pagesSet = searcher.getPages();
66	numWebpages = pagesSet.size();
67	numPages = (numWebpages + 9) / 10;
68	string query = searcher.getQueryString();
69	vector<string> common = searcher.getCommonUsed();
70
71	MultiSetIterator itor = pagesSet.begin();
72
73	for (int count = 0; count < page * 10 && itor != pagesSet.end(); count++)
74	{
75	itor++;
76	}
77
78	for (int index = 0; index < 10 && itor != pagesSet.end(); index++, itor++)
79	{
80	webpages.push_back(*itor);
81	}
82
83	this->query = searcher.getQuery().size() > 0;
84	results = webpages.size() > 0;
85	time = searcher.time();
86
87	if (debug)
88	{
89	cerr << "query = " << this->query << "\n"
90	<< "results = " << results << "\n"
91	<< "time = " << duration() << "\n";
92	}
93
94	entities(query, '&', "&");
95	entities(query, '\"', """);
96	entities(query, '<', "<");
97	entities(query, '>', ">");
98
99	string ignore = searcher.getIgnore();
100
101	header(query, page, common, searcher.getAnd(), searcher.getOr(),
102	ignore);
103
104	if (results)
105	{
106	body();
107	}
108	else if (this->query)
109	{
110	notfound(query, searcher.getQuery().size());
111	}
112
113	footer(query, page, common, searcher.getAnd(), searcher.getOr(),
114	ignore);
115	}
116
117	void Outputer::header(const string& query, unsigned page, vector<string>
118	common, bool and_, bool or_, const string& ignore)
119	{
120	ifstream fin(headerFile.c_str());
121
122	string line;
123	while (fin.good())
124	{
125	getline(fin, line);
126
127	conditional(line, fin, "<?ifquery?>", this->query);
128	conditional(line, fin, "<?ifresults?>", results);
129	conditional(line, fin, "<?ifor?>", or_);
130	conditional(line, fin, "<?ifand?>", and_);
131	conditional(line, fin, "<?ifignore?>", ignore != "");
132	conditional(line, fin, "<?ifcommon?>", common.size() == 1);
133	conditional(line, fin, "<?ifmanycommon?>", common.size() > 1);
134
135	#ifndef _OpenSSL_
136	tag(line, "<?version?>", programName + ' ' + programVersion + ' ' +
137	platform());
138	#else
139	tag(line, "<?version?>", programName + ' ' + programVersion + ' ' +
140	platform() + ' ' + openssl());
141	#endif
142	tag(line, "<?query?>", query);
143	tag(line, "<?range?>", range(page));
144	tag(line, "<?total?>", total());
145	tag(line, "<?time?>", duration());
146	tag(line, "<?pages?>", pages(query, page));
147	tag(line, "<?ignore?>", ignore);
148	tag(line, "<?common?>", common[0]);
149	tag(line, "<?manycommon?>", manycommon(common));
150
151	cout << line << (fin.good() ? "\n" : "");
152	}
153
154	fin.close();
155	}
156
157	void Outputer::body()
158	{
159	for (int index = 0; index < webpages.size(); index++)
160	{
161	Ranker webpage = webpages[index];
162	string title = webpage.getTitle();
163	if (title == "")
164	{
165	title = webpage.getURL();
166	entities(title, '&', "&");
167	entities(title, '\"', """);
168	entities(title, '<', "<");
169	entities(title, '>', ">");
170	}
171	string address = webpage.getURL();
172	string sample = webpage.getSample();
173	string description = webpage.getDescription();
174	ostringstream size;
175
176	size.precision(0);
177	size.setf(ios_base::fixed, ios_base::floatfield);
178	size << double(webpage.getSize()) / double(1024) << "k";
179
180	entities(address, '&', "&");
181	entities(address, '\"', """);
182	entities(address, '<', "<");
183	entities(address, '>', ">");
184
185	ifstream fin(bodyFile.c_str());
186
187	string line;
188	while (fin.good())
189	{
190	getline(fin, line);
191
192	conditional(line, fin, "<?ifdescription?>", description != "");
193
194	tag(line, "<?address?>", address);
195	tag(line, "<?title?>", title);
196	tag(line, "<?sample?>", sample);
197	tag(line, "<?description?>", description);
198	tag(line, "<?size?>", size.str());
199
200	cout << line << (fin.good() ? "\n" : "");
201	}
202
203	fin.close();
204	}
205	}
206
207	void Outputer::footer(const string& query, unsigned page, vector<string>
208	common, bool and_, bool or_, const string& ignore)
209	{
210	ifstream fin(footerFile.c_str());
211
212	string line;
213	while (fin.good())
214	{
215	getline(fin, line);
216
217	conditional(line, fin, "<?ifquery?>", this->query);
218	conditional(line, fin, "<?ifresults?>", results);
219	conditional(line, fin, "<?ifor?>", or_);
220	conditional(line, fin, "<?ifand?>", and_);
221	conditional(line, fin, "<?ifignore?>", ignore != "");
222	conditional(line, fin, "<?ifcommon?>", common.size() == 1);
223	conditional(line, fin, "<?ifmanycommon?>", common.size() > 1);
224
225	#ifndef _OpenSSL_
226	tag(line, "<?version?>", programName + ' ' + programVersion + ' ' +
227	platform());
228	#else
229	tag(line, "<?version?>", programName + ' ' + programVersion + ' ' +
230	platform() + ' ' + openssl());
231	#endif
232	tag(line, "<?query?>", query);
233	tag(line, "<?range?>", range(page));
234	tag(line, "<?total?>", total());
235	tag(line, "<?time?>", duration());
236	tag(line, "<?pages?>", pages(query, page));
237	tag(line, "<?ignore?>", ignore);
238	tag(line, "<?common?>", common[0]);
239	tag(line, "<?manycommon?>", manycommon(common));
240
241	cout << line << (fin.good() ? "\n" : "");
242	}
243
244	fin.close();
245	}
246
247	void Outputer::notfound(const string& query, unsigned keywords)
248	{
249	ifstream fin(notfoundFile.c_str());
250
251	string line;
252	while (fin.good())
253	{
254	getline(fin, line);
255
256	conditional(line, fin, "<?ifmany?>", keywords > 1);
257
258	tag(line, "<?query?>", query);
259
260	cout << line << (fin.good() ? "\n" : "");
261	}
262
263	fin.close();
264	}
265
266	string Outputer::pages(string query, unsigned page)
267	{
268	entities(query, "<", '<');
269	entities(query, ">", '>');
270	entities(query, """, '\"');
271	entities(query, "&", '&');
272
273	entities(query, '%', "%25");
274	entities(query, '\t', "%09");
275	entities(query, ' ', "%20");
276	entities(query, '\"', "%22");
277	entities(query, '#', "%23");
278	entities(query, '$', "%24");
279	entities(query, '&', "%26");
280	entities(query, '\'', "%27");
281	entities(query, '+', "%2B");
282	entities(query, ',', "%2C");
283	entities(query, '/', "%2F");
284	entities(query, ':', "%3A");
285	entities(query, ';', "%3B");
286	entities(query, '<', "%3C");
287	entities(query, '=', "%3D");
288	entities(query, '>', "%3E");
289	entities(query, '?', "%3F");
290	entities(query, '@', "%40");
291	entities(query, '[', "%5B");
292	entities(query, ']', "%5D");
293	entities(query, '\\', "%5C");
294	entities(query, '^', "%5E");
295	entities(query, '`', "%60");
296	entities(query, '{', "%7B");
297	entities(query, '\|', "%7C");
298	entities(query, '}', "%7D");
299	entities(query, '~', "%7E");
300
301	string lines;
302
303	ifstream fin(pagesFile.c_str());
304
305	string line;
306	while (fin.good())
307	{
308	getline(fin, line);
309	conditional(line, fin, "<?ifprevious?>", page >= 1);
310	conditional(line, fin, "<?ifpage?>", false);
311	conditional(line, fin, "<?ifnum?>", false);
312	conditional(line, fin, "<?ifnext?>", false);
313
314	ostringstream previous;
315
316	previous << page;
317
318	tag(line, "<?query?>", query);
319	tag(line, "<?previous?>", previous.str());
320
321	lines += line + (fin.good() ? "\n" : "");
322	}
323
324	fin.close();
325	fin.clear();
326
327	for (int index = 0; index < numPages; index++)
328	{
329	fin.open(pagesFile.c_str());
330
331	while (fin.good())
332	{
333	getline(fin, line);
334	if (index == page)
335	{
336	conditional(line, fin, "<?ifprevious?>", false);
337	conditional(line, fin, "<?ifpage?>", true);
338	conditional(line, fin, "<?ifnum?>", false);
339	conditional(line, fin, "<?ifnext?>", false);
340
341	ostringstream current;
342
343	current << index + 1;
344
345	tag(line, "<?page?>", current.str());
346	}
347	else
348	{
349	conditional(line, fin, "<?ifprevious?>", false);
350	conditional(line, fin, "<?ifpage?>", false);
351	conditional(line, fin, "<?ifnum?>", true);
352	conditional(line, fin, "<?ifnext?>", false);
353
354	ostringstream num;
355
356	num << index + 1;
357
358	tag(line, "<?query?>", query);
359	tag(line, "<?num?>", num.str());
360	}
361
362	lines += line + (fin.good() ? "\n" : "");
363	}
364
365	fin.close();
366	fin.clear();
367	}
368
369	fin.open(pagesFile.c_str());
370
371	while (fin.good())
372	{
373	getline(fin, line);
374	conditional(line, fin, "<?ifprevious?>", false);
375	conditional(line, fin, "<?ifpage?>", false);
376	conditional(line, fin, "<?ifnum?>", false);
377	conditional(line, fin, "<?ifnext?>", page + 2 <= numPages);
378
379	ostringstream next;
380
381	next << page + 2;
382
383	tag(line, "<?query?>", query);
384	tag(line, "<?next?>", next.str());
385
386	lines += line + (fin.good() ? "\n" : "");
387	}
388
389	fin.close();
390
391	return lines;
392	}
393
394	string Outputer::range(unsigned page)
395	{
396	unsigned bottom = page * 10 + 1;
397	unsigned top = numWebpages > page * 10 + 10 ? page * 10 + 10 : numWebpages;
398	ostringstream range;
399
400	range << bottom << " - " << top;
401
402	return range.str();
403	}
404
405	string Outputer::total()
406	{
407	ostringstream total;
408
409	total << numWebpages;
410
411	return total.str();
412	}
413
414	string Outputer::duration()
415	{
416	ostringstream duration;
417
418	duration.precision(2);
419	duration.setf(ios_base::fixed, ios_base::floatfield);
420	duration << time;
421
422	return duration.str();
423	}
424
425	string Outputer::manycommon(vector<string> common)
426	{
427	string line;
428
429	for (int index = 0; index < common.size(); index++)
430	{
431	line += common[index];
432
433	if (index != common.size() - 1) line += ' ';
434	}
435
436	return line;
437	}
438
439	void Outputer::tag(string& line, char* tag, const string& replacement)
440	{
441	int begin = 0;
442	while (begin < line.length())
443	{
444	int spot = line.find(tag, begin);
445
446	if (spot != string::npos)
447	{
448	line.replace(spot, strlen(tag), replacement);
449	}
450	else
451	{
452	break;
453	}
454
455	begin = spot + replacement.length();
456	}
457	}
458
459	void Outputer::conditional(string& line, ifstream& fin, char* tag, bool
460	condition)
461	{
462	unsigned begin = 0;
463	while (begin < line.length())
464	{
465	unsigned start = line.find(tag, begin);
466	unsigned finish = line.find("<?endif?>", start);
467
468	if (start == string::npos) break;
469
470	string next;
471	while (finish == string::npos)
472	{
473	getline(fin, next);
474	line += '\n' + next;
475	finish = line.find("<?endif?>", start);
476	}
477
478	if (condition)
479	{
480	line.erase(start, strlen(tag));
481	line.erase(finish - strlen(tag), 9);
482
483	begin = finish - strlen(tag) - 9;
484	}
485	else
486	{
487	line.erase(start, finish - start + 9);
488
489	begin = start;
490	}
491	}
492	}