Search/trunk/URL.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 URL
//
// Douglas Thrift
//
// $Id$

#include "URL.hpp"

string URL::getURL()
{
        ostringstream url;

#ifndef _OpenSSL_
        url << "http://" << address;

        if (port != 80)
#else
        url << (tls ? "https://" : "http://") << address;

        if (port != 80 && !tls || port != 443 && tls)
#endif
        {
                url << ":" << port;
        }

        url << path;

        return url.str();
}

void URL::setURL(const URL& url)
{
        this->address = url.address;
        this->port = url.port;
        this->path = url.path;
#ifdef _OpenSSL_
        this->tls = url.tls;
#endif
}

void URL::setURL(const string& url)
{
#ifndef _OpenSSL_
        if (url.find("http://") != 0 || url.length() <= 7)
        {
                cerr << program << ": Malformed URL: " << url << "\n";

                exit(1);
        }

        size_t begin(7);

#else
        tls = false;

        if (url.find("https://") == 0 && url.length() > 8)
        {
                tls = true;
        }
        else if (url.find("http://") != 0 || url.length() <= 7)
        {
                cerr << program << ": Malformed URL: " << url << "\n";

                exit(1);
        }

        size_t begin(tls ? 8 : 7);
#endif

        size_t colon(url.find(':', begin)), end(url.find('/', begin));

        if (colon != string::npos && colon < end)
        {
                address = url.substr(begin, colon - begin);

                istringstream number((url.substr(colon + 1, end - colon - 1)));

                number >> port;
        }
        else
        {
                address = url.substr(begin, end - begin);
#ifndef _OpenSSL_
                port = 80;
#else
                port = tls ? 443 : 80;
#endif
        }

        if (end == string::npos)
        {
                path = "/";
        }
        else
        {
                path = url.substr(end);
        }
}

void URL::setPath(const string& path)
{
        if (path.find('/') != 0)
        {
                this->path = "/" + path;
        }
        else
        {
                this->path = path;
        }
}

ostream& operator<<(ostream& os, URL& data)
{
        os << data.getURL();

        return os;
}

string getLink(string link, URL& url)
{
        string hyperlink;

        if (link.find('#') != string::npos)
        {
                size_t pound(link.find('#'));

                link.erase(pound);
        }

        if (link.find("://") != string::npos)
        {
#ifndef _OpenSSL_
                if (link.find("http://") == 0 && link.length() > 7) hyperlink = link;
#else
                if (link.find("http://") == 0 && link.length() > 7
                        || link.find("https://") == 0 && link.length() > 8)
                        hyperlink = link;
#endif
        }
        else if (link.find("mailto:") == 0)
        {
                // do nothing we are not evil spammers!
        }
        else if (link.find("news:") == 0)
        {
                // do nothing this isn't Google Groups
        }
        else if (link.find("aim:") == 0)
        {
                // do nothing we don't do AIM
        }
        else if (link.find("//") == 0)
        {
#ifndef _OpenSSL_
                hyperlink = "http:" + link;
#else
                hyperlink = (url.getTls() ? "https:" : "http:") + link;
#endif
        }
        else if (link.find('/') == 0)
        {
                hyperlink = url.getURL();

#ifndef _OpenSSL_
                size_t path(hyperlink.find('/', 7));
#else
                size_t path(hyperlink.find('/', url.getTls() ? 8 : 7));
#endif

                hyperlink.erase(path);

                hyperlink += link;
        }
        else if (link.empty())
        {
                // a blank link is useless
        }
        else
        {
                hyperlink = url.getURL();

                string path(url.getPath());
                size_t cutoff(hyperlink.rfind(path));

                hyperlink.erase(cutoff);

                size_t dir(path.rfind('/') + 1);

                path.erase(dir);

                while (link.find("../") == 0)
                {
                        size_t dot(path.rfind('/') - 1), up(path.rfind('/', dot) + 1);

                        path.erase(up);
                        link.erase(0, 3);
                }
                while (link.find("./") == 0)
                {
                        link.erase(0, 2);
                }

                hyperlink += path + link;
        }

        return hyperlink;
}
Revision:	366
Committed:	2008-08-23T02:30:47-07:00 (16 years, 9 months ago) by douglas
File size:	5732 byte(s)
Log Message:	Rearrange Search.
#	User	Rev	Content
1	douglas	1	/* ============================================================================
2			* Douglas Thrift's Search Engine License
3			*
4	douglas	312	* Copyright (C) 2002-2004, Douglas Thrift. All Rights Reserved.
5	douglas	1	* 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 URL
46			//
47			// Douglas Thrift
48			//
49	Douglas Thrift	331	// $Id$
50	douglas	1
51	Douglas Thrift	334	#include "URL.hpp"
52	douglas	1
53			string URL::getURL()
54			{
55	douglas	195	ostringstream url;
56	Douglas Thrift	348
57	douglas	195	#ifndef _OpenSSL_
58			url << "http://" << address;
59	douglas	1
60			if (port != 80)
61	douglas	195	#else
62			url << (tls ? "https://" : "http://") << address;
63
64			if (port != 80 && !tls \|\| port != 443 && tls)
65			#endif
66	douglas	1	{
67	douglas	195	url << ":" << port;
68	douglas	1	}
69
70	douglas	195	url << path;
71	douglas	1
72	douglas	195	return url.str();
73	douglas	1	}
74
75			void URL::setURL(const URL& url)
76			{
77			this->address = url.address;
78			this->port = url.port;
79			this->path = url.path;
80	douglas	195	#ifdef _OpenSSL_
81			this->tls = url.tls;
82			#endif
83	douglas	1	}
84
85			void URL::setURL(const string& url)
86			{
87	douglas	195	#ifndef _OpenSSL_
88			if (url.find("http://") != 0 \|\| url.length() <= 7)
89	douglas	1	{
90			cerr << program << ": Malformed URL: " << url << "\n";
91	Douglas Thrift	360
92	douglas	1	exit(1);
93			}
94
95	douglas	365	size_t begin(7);
96	Douglas Thrift	348
97	douglas	195	#else
98			tls = false;
99	douglas	1
100	douglas	195	if (url.find("https://") == 0 && url.length() > 8)
101			{
102			tls = true;
103			}
104			else if (url.find("http://") != 0 \|\| url.length() <= 7)
105			{
106			cerr << program << ": Malformed URL: " << url << "\n";
107	Douglas Thrift	348
108	douglas	195	exit(1);
109			}
110
111	douglas	365	size_t begin(tls ? 8 : 7);
112	douglas	195	#endif
113
114	douglas	365	size_t colon(url.find(':', begin)), end(url.find('/', begin));
115	Douglas Thrift	348
116	douglas	1	if (colon != string::npos && colon < end)
117			{
118			address = url.substr(begin, colon - begin);
119	douglas	212
120			istringstream number((url.substr(colon + 1, end - colon - 1)));
121
122			number >> port;
123	douglas	1	}
124			else
125			{
126			address = url.substr(begin, end - begin);
127	douglas	195	#ifndef _OpenSSL_
128	douglas	1	port = 80;
129	douglas	195	#else
130			port = tls ? 443 : 80;
131			#endif
132	douglas	1	}
133
134			if (end == string::npos)
135			{
136			path = "/";
137			}
138			else
139			{
140			path = url.substr(end);
141			}
142			}
143
144			void URL::setPath(const string& path)
145			{
146			if (path.find('/') != 0)
147			{
148			this->path = "/" + path;
149			}
150			else
151			{
152			this->path = path;
153			}
154			}
155
156			ostream& operator<<(ostream& os, URL& data)
157			{
158			os << data.getURL();
159
160			return os;
161			}
162	douglas	17
163			string getLink(string link, URL& url)
164			{
165	Douglas Thrift	348	string hyperlink;
166	douglas	17
167			if (link.find('#') != string::npos)
168			{
169	douglas	365	size_t pound(link.find('#'));
170	Douglas Thrift	348
171	douglas	17	link.erase(pound);
172			}
173
174			if (link.find("://") != string::npos)
175			{
176	douglas	195	#ifndef _OpenSSL_
177	douglas	22	if (link.find("http://") == 0 && link.length() > 7) hyperlink = link;
178	douglas	195	#else
179	Douglas Thrift	360	if (link.find("http://") == 0 && link.length() > 7
180			\|\| link.find("https://") == 0 && link.length() > 8)
181			hyperlink = link;
182	douglas	195	#endif
183	douglas	17	}
184			else if (link.find("mailto:") == 0)
185			{
186			// do nothing we are not evil spammers!
187			}
188	douglas	18	else if (link.find("news:") == 0)
189			{
190			// do nothing this isn't Google Groups
191			}
192	Douglas Thrift	348	else if (link.find("aim:") == 0)
193			{
194			// do nothing we don't do AIM
195			}
196	douglas	17	else if (link.find("//") == 0)
197			{
198	douglas	195	#ifndef _OpenSSL_
199	douglas	17	hyperlink = "http:" + link;
200	douglas	195	#else
201			hyperlink = (url.getTls() ? "https:" : "http:") + link;
202			#endif
203	douglas	17	}
204			else if (link.find('/') == 0)
205			{
206			hyperlink = url.getURL();
207
208	douglas	195	#ifndef _OpenSSL_
209	douglas	365	size_t path(hyperlink.find('/', 7));
210	douglas	195	#else
211	douglas	365	size_t path(hyperlink.find('/', url.getTls() ? 8 : 7));
212	douglas	195	#endif
213	Douglas Thrift	348
214	douglas	17	hyperlink.erase(path);
215
216			hyperlink += link;
217			}
218	Douglas Thrift	355	else if (link.empty())
219	douglas	17	{
220			// a blank link is useless
221			}
222			else
223			{
224			hyperlink = url.getURL();
225
226	Douglas Thrift	348	string path(url.getPath());
227	douglas	365	size_t cutoff(hyperlink.rfind(path));
228	Douglas Thrift	348
229	douglas	17	hyperlink.erase(cutoff);
230
231	douglas	365	size_t dir(path.rfind('/') + 1);
232	Douglas Thrift	348
233	douglas	17	path.erase(dir);
234
235			while (link.find("../") == 0)
236			{
237	douglas	365	size_t dot(path.rfind('/') - 1), up(path.rfind('/', dot) + 1);
238	douglas	17
239			path.erase(up);
240			link.erase(0, 3);
241			}
242			while (link.find("./") == 0)
243			{
244			link.erase(0, 2);
245			}
246
247			hyperlink += path + link;
248			}
249
250			return hyperlink;
251			}