db/upnp: move generic code to lib/upnp/

1 files changed, 166 insertions, 0 deletions

diff --git a/src/lib/upnp/Util.cxx b/src/lib/upnp/Util.cxx
new file mode 100644
index 000000000..cf34a47d3
--- /dev/null
+++ b/src/lib/upnp/Util.cxx
@@ -0,0 +1,166 @@
+/*
+ * 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> &);