aboutsummaryrefslogtreecommitdiffstats
path: root/src/db/upnp/Util.cxx
blob: cf34a47d313c221b0a282dd3e9cbd3ca1818460b (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
/*
 * Copyright (C) 2003-2014 The Music Player Daemon Project
 * http://www.musicpd.org
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#include "Util.hxx"

#include <upnp/ixml.h>

#include <assert.h>

/** Get rid of white space at both ends */
void
trimstring(std::string &s, const char *ws)
{
	auto pos = s.find_first_not_of(ws);
	if (pos == std::string::npos) {
		s.clear();
		return;
	}
	s.replace(0, pos, std::string());

	pos = s.find_last_not_of(ws);
	if (pos != std::string::npos && pos != s.length()-1)
		s.replace(pos + 1, std::string::npos, std::string());
}

std::string
caturl(const std::string &s1, const std::string &s2)
{
	if (s2.front() == '/') {
		/* absolute path: replace the whole URI path in s1 */

		auto i = s1.find("://");
		if (i == s1.npos)
			/* no scheme: override s1 completely */
			return s2;

		/* find the first slash after the host part */
		i = s1.find('/', i + 3);
		if (i == s1.npos)
			/* there's no URI path - simply append s2 */
			i = s1.length();

		return s1.substr(0, i) + s2;
	}

	std::string out(s1);
	if (out.back() != '/')
		out.push_back('/');

	out += s2;
	return out;
}

static void
path_catslash(std::string &s)
{
	if (s.empty() || s.back() != '/')
		s += '/';
}

std::string
path_getfather(const std::string &s)
{
	std::string father = s;

	// ??
	if (father.empty())
		return "./";

	if (father.back() == '/') {
		// Input ends with /. Strip it, handle special case for root
		if (father.length() == 1)
			return father;
		father.erase(father.length()-1);
	}

	auto slp = father.rfind('/');
	if (slp == std::string::npos)
		return "./";

	father.erase(slp);
	path_catslash(father);
	return father;
}

std::list<std::string>
stringToTokens(const std::string &str,
	       const char *delims, bool skipinit)
{
	std::list<std::string> tokens;

	std::string::size_type startPos = 0;

	// Skip initial delims, return empty if this eats all.
	if (skipinit &&
	    (startPos = str.find_first_not_of(delims, 0)) == std::string::npos)
		return tokens;

	while (startPos < str.size()) {
		// Find next delimiter or end of string (end of token)
		auto pos = str.find_first_of(delims, startPos);

		// Add token to the vector and adjust start
		if (pos == std::string::npos) {
			tokens.emplace_back(str, startPos);
			break;
		} else if (pos == startPos) {
			// Dont' push empty tokens after first
			if (tokens.empty())
				tokens.emplace_back();
			startPos = ++pos;
		} else {
			tokens.emplace_back(str, startPos, pos - startPos);
			startPos = ++pos;
		}
	}

	return tokens;
}

template <class T>
bool
csvToStrings(const char *s, T &tokens)
{
	assert(tokens.empty());

	std::string current;

	while (true) {
		char ch = *s++;
		if (ch == 0) {
			tokens.emplace_back(std::move(current));
			return true;
		}

		if (ch == '\\') {
			ch = *s++;
			if (ch == 0)
				return false;
		} else if (ch == ',') {
			tokens.emplace_back(std::move(current));
			current.clear();
			continue;
		}

		current.push_back(ch);
	}
}

template bool csvToStrings<std::list<std::string>>(const char *, std::list<std::string> &);