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/*************************************************************************** |
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* * |
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* Copyright (C) 2007-2017 Christian Schoenebeck * |
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* * |
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* This library 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 library 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 * |
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* along with this library; if not, write to the Free Software * |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, * |
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* MA 02111-1307 USA * |
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***************************************************************************/ |
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|
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#include "Path.h" |
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|
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// for function hexsToNumber() |
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#include "global_private.h" |
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|
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#include <sstream> |
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|
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namespace LinuxSampler { |
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|
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Path::Path() : drive(0), absolute(false) { |
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} |
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|
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Path::Path(std::string path) { |
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#if WIN32 |
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*this = fromWindows(path); |
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#else |
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*this = fromPosix(path); |
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#endif |
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} |
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|
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void Path::appendNode(std::string Name) { |
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if (!Name.size()) return; |
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elements.push_back(Name); |
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} |
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|
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void Path::setDrive(const char& Drive) { |
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drive = Drive; |
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absolute = true; |
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} |
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|
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std::string Path::toNativeFSPath() const { |
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#if WIN32 |
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return toWindows(); |
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#else |
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return toPosix(); |
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#endif |
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} |
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|
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std::string Path::toPosix() const { |
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// POSIX paths consist of forward slash separators and requires forward |
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// slashes in path and file names to be encoded as "%2f", the file names |
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// "." and ".." have special meanings |
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// (see http://www.opengroup.org/onlinepubs/000095399/basedefs/xbd_chap03.html#tag_03_169 |
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// and http://www.opengroup.org/onlinepubs/000095399/basedefs/xbd_chap03.html#tag_03_266 ) |
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std::string result; |
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for (int iElement = 0; iElement < elements.size(); iElement++) { |
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// encode percent characters |
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std::string e = elements[iElement]; |
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for ( |
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int pos = (int)e.find("%"); pos != std::string::npos; |
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pos = (int)e.find("%", pos+2) |
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) e.replace(pos/*offset*/, 1/*length*/, "%%"/*by*/); |
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// encode forward slashes |
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for ( |
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int pos = (int)e.find("/"); pos != std::string::npos; |
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pos = (int)e.find("/", pos+3) |
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) e.replace(pos/*offset*/, 1/*length*/, "%2f"/*by*/); |
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// append encoded node to full encoded path |
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result += "/" + e; |
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} |
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if (!result.size()) result = "/"; |
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return result; |
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} |
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|
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std::string Path::toDbPath() const { |
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std::string result; |
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for (int iElement = 0; iElement < elements.size(); iElement++) { |
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// replace all slashes with '\0' |
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std::string e = elements[iElement]; |
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for (int i = 0; i < e.length(); i++) { |
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if (e.at(i) == '/') e.at(i) = '\0'; |
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} |
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// append encoded node to full encoded path |
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result += "/" + e; |
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} |
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if (!result.size()) result = "/"; |
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return result; |
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} |
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|
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std::string Path::toLscp() const { |
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std::string result; |
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#if WIN32 |
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if(drive) { |
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result.assign(&drive,1); |
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result += ":"; |
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} |
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#endif |
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for (int iElement = 0; iElement < elements.size(); iElement++) { |
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// replace "special characters" by LSCP escape sequences |
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std::string e = elements[iElement]; |
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for (int i = 0; i < e.length(); i++) { |
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const char c = e.c_str()[i]; |
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if ( |
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!(c >= '0' && c <= '9') && |
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!(c >= 'a' && c <= 'z') && |
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!(c >= 'A' && c <= 'Z') && |
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!(c == '!') && !(c == '#') && !(c == '$') && !(c == '%') && |
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!(c == '&') && !(c == '(') && !(c == ')') && !(c == '*') && |
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!(c == '+') && !(c == ',') && !(c == '-') && !(c == '.') && |
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!(c == ':') && !(c == ';') && !(c == '<') && !(c == '=') && |
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!(c == '>') && !(c == '?') && !(c == '@') && !(c == '[') && |
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!(c == ']') && !(c == '^') && !(c == '_') && !(c == '`') && |
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!(c == '{') && !(c == '|') && !(c == '}') && !(c == '~') |
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) { |
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// convert the "special" character into a "\xHH" LSCP escape sequence |
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char buf[5]; |
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snprintf(buf, sizeof(buf), "\\x%02x", static_cast<unsigned char>(c)); |
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e.replace(i, 1, buf); |
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i += 3; |
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} |
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} |
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// append encoded node to full encoded path |
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result += "/" + e; |
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} |
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if (!result.size()) result = "/"; |
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return result; |
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} |
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|
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std::string Path::toWindows() const { |
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std::stringstream result; |
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const char cDrive = |
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((drive >= 'A' && drive <= 'Z') || (drive >= 'a' && drive <= 'z')) |
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? drive : '?'; |
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result << cDrive; |
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result << ':'; |
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for (int iElement = 0; iElement < elements.size(); iElement++) { |
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// append encoded node to full encoded path |
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result << "\\" << elements[iElement]; |
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} |
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if (elements.empty()) result << '\\'; |
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return result.str(); |
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} |
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|
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Path Path::operator+(const Path& p) { |
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Path result = *this; |
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for (int i = 0; i < p.elements.size(); i++) |
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result.elements.push_back(p.elements[i]); |
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return result; |
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} |
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|
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Path Path::operator+(const Path* p) { |
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return *this + *p; |
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} |
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|
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Path Path::fromUnknownFS(std::string path) { |
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bool hasDrive = false; |
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int nSlash = 0, nBackSlash = 0; |
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|
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if (path.length() >= 2) |
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hasDrive = (path[1] == ':'); |
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|
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for (size_t i = 0; i < path.size(); ++i) { |
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if (path[i] == '/') nSlash++; |
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if (path[i] == '\\') nBackSlash++; |
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} |
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|
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if (!hasDrive && nSlash > nBackSlash) |
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return Path::fromPosix(path); |
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else if (hasDrive || nBackSlash > nSlash) |
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return Path::fromWindows(path); |
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else |
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return Path(path); // expect local file system encoding |
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} |
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|
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Path Path::fromPosix(std::string path) { |
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Path result; |
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// first split the nodes |
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{ |
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int nodeEnd; |
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for ( |
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int nodeBegin = (int)path.find_first_not_of('/'); |
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nodeBegin != std::string::npos; |
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nodeBegin = (int)path.find_first_not_of('/', nodeEnd) |
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) { |
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nodeEnd = (int)path.find_first_of('/', nodeBegin); |
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result.appendNode( |
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(nodeEnd != std::string::npos) ? |
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path.substr(nodeBegin, nodeEnd - nodeBegin) : |
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path.substr(nodeBegin) |
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); |
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} |
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} |
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// resolve POSIX escape sequences in all nodes |
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for (int iNode = 0; iNode < result.elements.size(); iNode++) { |
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std::string& s = result.elements[iNode]; |
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for (size_t pos = s.find('%'); pos < s.length(); pos = s.find('%', ++pos)) { |
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if (pos+1 >= s.length()) { // unexpected character |
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//TODO: we might want to throw an exception here, for now we simply replace the character by '?' |
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s.replace(pos, 1, "?"); |
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continue; |
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} |
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if (s.c_str()[pos+1] == '%') { |
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s.replace(pos, 2, "%"); |
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continue; |
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} |
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if (pos+2 >= s.length()) { |
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//TODO: we might want to throw an exception here, for now we simply replace the character by '?' |
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s.replace(pos, 2, "?"); |
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continue; |
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} |
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// expecting a "%HH" sequence here, convert it into the respective character |
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const std::string sHex = s.substr(pos+1, 2); |
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char cAscii = hexsToNumber(sHex.c_str()[1], sHex.c_str()[0]); |
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char pcAscii[] = { cAscii, 0 }; |
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s.replace(pos, 3, pcAscii); |
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} |
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} |
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// check whether given string reflects an absolute path |
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// (indicated by a forward slash as first character on POSIX) |
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result.absolute = !path.empty() && path[0] == '/'; |
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return result; |
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} |
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|
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Path Path::fromDbPath(std::string path) { |
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Path result; |
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// first split the nodes |
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{ |
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int nodeEnd; |
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for ( |
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int nodeBegin = (int)path.find_first_not_of('/'); |
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nodeBegin != std::string::npos; |
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nodeBegin = (int)path.find_first_not_of('/', nodeEnd) |
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) { |
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nodeEnd = (int)path.find_first_of('/', nodeBegin); |
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|
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std::string s = (nodeEnd != std::string::npos) ? |
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path.substr(nodeBegin, nodeEnd - nodeBegin) : |
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path.substr(nodeBegin); |
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for (int i = 0; i < s.length(); i++) if (s.at(i) == '\0') s.at(i) = '/'; |
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result.appendNode(s); |
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} |
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} |
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return result; |
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} |
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|
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Path Path::fromWindows(std::string path) { |
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Path result; |
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|
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int nodeEnd = 0; |
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|
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// first retrieve drive |
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if (path.size() >= 2 && path.c_str()[1] == ':') { |
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result.setDrive(path.c_str()[0]); |
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nodeEnd = 2; |
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} |
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|
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// split the nodes |
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{ |
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for ( |
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int nodeBegin = (int)path.find_first_not_of('\\', nodeEnd); |
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nodeBegin != std::string::npos; |
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nodeBegin = (int)path.find_first_not_of('\\', nodeEnd) |
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) { |
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nodeEnd = (int)path.find_first_of('\\', nodeBegin); |
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result.appendNode( |
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(nodeEnd != std::string::npos) ? |
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path.substr(nodeBegin, nodeEnd - nodeBegin) : |
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path.substr(nodeBegin) |
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); |
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} |
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} |
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|
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// check whether given string reflects an absolute path |
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// (indicated either by a backslash or drive at the beginning on Windows) |
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result.absolute = result.drive || (!path.empty() && path[0] == '\\'); |
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|
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return result; |
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} |
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|
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std::string Path::getName(std::string path) { |
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Path p; |
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#if WIN32 |
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p.fromWindows(path); |
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#else |
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p.fromPosix(path); |
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#endif |
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|
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return p.getName(); |
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} |
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|
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std::string Path::getName() const { |
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if(elements.empty()) return ""; |
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return elements[elements.size() - 1]; |
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} |
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|
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std::string Path::getBaseName(std::string path) { |
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Path p; |
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#if WIN32 |
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p = fromWindows(path); |
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#else |
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p = fromPosix(path); |
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#endif |
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|
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return p.getBaseName(); |
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} |
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|
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std::string Path::getBaseName() const { |
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std::string name = getName(); |
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size_t lastdot = name.find_last_of('.'); |
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if(lastdot == std::string::npos) return name; |
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return name.substr(0, lastdot); |
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} |
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|
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std::string Path::stripLastName() { |
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if (elements.size() > 0) elements.pop_back(); |
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#if WIN32 |
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return toWindows(); |
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#else |
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return toPosix(); |
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#endif |
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} |
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|
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std::string Path::stripLastName(std::string path) { |
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Path p; |
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#if WIN32 |
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p = fromWindows(path); |
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#else |
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p = fromPosix(path); |
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#endif |
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|
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return p.stripLastName(); |
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} |
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|
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bool Path::isAbsolute() const { |
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return absolute; |
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} |
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|
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} // namespace LinuxSampler |
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