167 lines
3.6 KiB
C++
167 lines
3.6 KiB
C++
/*
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* Copyright (C) 2003-2014 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "Util.hxx"
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#include <upnp/ixml.h>
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#include <assert.h>
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/** Get rid of white space at both ends */
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void
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trimstring(std::string &s, const char *ws)
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{
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auto pos = s.find_first_not_of(ws);
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if (pos == std::string::npos) {
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s.clear();
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return;
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}
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s.replace(0, pos, std::string());
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pos = s.find_last_not_of(ws);
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if (pos != std::string::npos && pos != s.length()-1)
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s.replace(pos + 1, std::string::npos, std::string());
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}
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std::string
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caturl(const std::string &s1, const std::string &s2)
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{
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if (s2.front() == '/') {
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/* absolute path: replace the whole URI path in s1 */
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auto i = s1.find("://");
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if (i == s1.npos)
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/* no scheme: override s1 completely */
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return s2;
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/* find the first slash after the host part */
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i = s1.find('/', i + 3);
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if (i == s1.npos)
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/* there's no URI path - simply append s2 */
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i = s1.length();
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return s1.substr(0, i) + s2;
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}
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std::string out(s1);
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if (out.back() != '/')
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out.push_back('/');
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out += s2;
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return out;
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}
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static void
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path_catslash(std::string &s)
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{
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if (s.empty() || s.back() != '/')
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s += '/';
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}
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std::string
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path_getfather(const std::string &s)
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{
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std::string father = s;
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// ??
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if (father.empty())
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return "./";
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if (father.back() == '/') {
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// Input ends with /. Strip it, handle special case for root
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if (father.length() == 1)
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return father;
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father.erase(father.length()-1);
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}
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auto slp = father.rfind('/');
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if (slp == std::string::npos)
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return "./";
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father.erase(slp);
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path_catslash(father);
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return father;
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}
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std::list<std::string>
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stringToTokens(const std::string &str,
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const char *delims, bool skipinit)
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{
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std::list<std::string> tokens;
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std::string::size_type startPos = 0;
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// Skip initial delims, return empty if this eats all.
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if (skipinit &&
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(startPos = str.find_first_not_of(delims, 0)) == std::string::npos)
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return tokens;
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while (startPos < str.size()) {
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// Find next delimiter or end of string (end of token)
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auto pos = str.find_first_of(delims, startPos);
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// Add token to the vector and adjust start
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if (pos == std::string::npos) {
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tokens.emplace_back(str, startPos);
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break;
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} else if (pos == startPos) {
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// Dont' push empty tokens after first
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if (tokens.empty())
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tokens.emplace_back();
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startPos = ++pos;
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} else {
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tokens.emplace_back(str, startPos, pos - startPos);
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startPos = ++pos;
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}
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}
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return tokens;
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}
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template <class T>
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bool
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csvToStrings(const char *s, T &tokens)
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{
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assert(tokens.empty());
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std::string current;
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while (true) {
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char ch = *s++;
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if (ch == 0) {
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tokens.emplace_back(std::move(current));
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return true;
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}
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if (ch == '\\') {
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ch = *s++;
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if (ch == 0)
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return false;
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} else if (ch == ',') {
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tokens.emplace_back(std::move(current));
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current.clear();
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continue;
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}
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current.push_back(ch);
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}
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}
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template bool csvToStrings<std::list<std::string>>(const char *, std::list<std::string> &);
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