/[svn]/linuxsampler/trunk/src/common/Path.cpp
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Contents of /linuxsampler/trunk/src/common/Path.cpp

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Revision 1537 - (show annotations) (download)
Mon Dec 3 18:30:47 2007 UTC (12 years, 4 months ago) by senoner
File size: 8858 byte(s)
* win32 port: common/Path.cpp :
 - fixed missing drive letter in toLscp()
 network/lscpserver.cpp:
 - added win32 support in VerifyFile()

1 /***************************************************************************
2 * *
3 * Copyright (C) 2007 Christian Schoenebeck *
4 * *
5 * This library is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) any later version. *
9 * *
10 * This library is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
14 * *
15 * You should have received a copy of the GNU General Public License *
16 * along with this library; if not, write to the Free Software *
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, *
18 * MA 02111-1307 USA *
19 ***************************************************************************/
20
21 #include "Path.h"
22
23 // for function hexsToNumber()
24 #include "global_private.h"
25
26 #include <sstream>
27
28 namespace LinuxSampler {
29
30 Path::Path() : drive(0) {
31 }
32
33 void Path::appendNode(std::string Name) {
34 if (!Name.size()) return;
35 elements.push_back(Name);
36 }
37
38 void Path::setDrive(const char& Drive) {
39 drive = Drive;
40 }
41
42 std::string Path::toPosix() const {
43 // POSIX paths consist of forward slash separators and requires forward
44 // slashes in path and file names to be encoded as "%2f", the file names
45 // "." and ".." have special meanings
46 // (see http://www.opengroup.org/onlinepubs/000095399/basedefs/xbd_chap03.html#tag_03_169
47 // and http://www.opengroup.org/onlinepubs/000095399/basedefs/xbd_chap03.html#tag_03_266 )
48 std::string result;
49 for (int iElement = 0; iElement < elements.size(); iElement++) {
50 // encode percent characters
51 std::string e = elements[iElement];
52 for (
53 int pos = e.find("%"); pos != std::string::npos;
54 pos = e.find("%", pos+2)
55 ) e.replace(pos/*offset*/, 1/*length*/, "%%"/*by*/);
56 // encode forward slashes
57 for (
58 int pos = e.find("/"); pos != std::string::npos;
59 pos = e.find("/", pos+3)
60 ) e.replace(pos/*offset*/, 1/*length*/, "%2f"/*by*/);
61 // append encoded node to full encoded path
62 result += "/" + e;
63 }
64 if (!result.size()) result = "/";
65 return result;
66 }
67
68 std::string Path::toDbPath() const {
69 std::string result;
70 for (int iElement = 0; iElement < elements.size(); iElement++) {
71 // replace all slashes with '\0'
72 std::string e = elements[iElement];
73 for (int i = 0; i < e.length(); i++) {
74 if (e.at(i) == '/') e.at(i) = '\0';
75 }
76 // append encoded node to full encoded path
77 result += "/" + e;
78 }
79 if (!result.size()) result = "/";
80 return result;
81 }
82
83 std::string Path::toLscp() const {
84 std::string result;
85 #if WIN32
86 if(drive) {
87 result.assign(&drive,1);
88 result += ":";
89 }
90 #endif
91 for (int iElement = 0; iElement < elements.size(); iElement++) {
92 // replace "special characters" by LSCP escape sequences
93 std::string e = elements[iElement];
94 for (int i = 0; i < e.length(); i++) {
95 const char c = e.c_str()[i];
96 if (
97 !(c >= '0' && c <= '9') &&
98 !(c >= 'a' && c <= 'z') &&
99 !(c >= 'A' && c <= 'Z') &&
100 !(c == '!') && !(c == '#') && !(c == '$') && !(c == '%') &&
101 !(c == '&') && !(c == '(') && !(c == ')') && !(c == '*') &&
102 !(c == '+') && !(c == ',') && !(c == '-') && !(c == '.') &&
103 !(c == ':') && !(c == ';') && !(c == '<') && !(c == '=') &&
104 !(c == '>') && !(c == '?') && !(c == '@') && !(c == '[') &&
105 !(c == ']') && !(c == '^') && !(c == '_') && !(c == '`') &&
106 !(c == '{') && !(c == '|') && !(c == '}') && !(c == '~')
107 ) {
108 // convert the "special" character into a "\xHH" LSCP escape sequence
109 char buf[5];
110 snprintf(buf, sizeof(buf), "\\x%02x", static_cast<unsigned char>(c));
111 e.replace(i, 1, buf);
112 i += 3;
113 }
114 }
115 // append encoded node to full encoded path
116 result += "/" + e;
117 }
118 if (!result.size()) result = "/";
119 return result;
120 }
121
122 std::string Path::toWindows() const {
123 std::stringstream result;
124 const char cDrive =
125 ((drive >= 'A' && drive <= 'Z') || (drive >= 'a' && drive <= 'z'))
126 ? drive : '?';
127 result << cDrive;
128 result << ':';
129 for (int iElement = 0; iElement < elements.size(); iElement++) {
130 // append encoded node to full encoded path
131 result << "\\" << elements[iElement];
132 }
133 return result.str();
134 }
135
136 Path Path::operator+(const Path& p) {
137 Path result = *this;
138 for (int i = 0; i < p.elements.size(); i++)
139 result.elements.push_back(p.elements[i]);
140 return result;
141 }
142
143 Path Path::operator+(const Path* p) {
144 return *this + *p;
145 }
146
147 Path Path::fromPosix(std::string path) {
148 Path result;
149 // first split the nodes
150 {
151 int nodeEnd;
152 for (
153 int nodeBegin = path.find_first_not_of('/');
154 nodeBegin != std::string::npos;
155 nodeBegin = path.find_first_not_of('/', nodeEnd)
156 ) {
157 nodeEnd = path.find_first_of('/', nodeBegin);
158 result.appendNode(
159 (nodeEnd != std::string::npos) ?
160 path.substr(nodeBegin, nodeEnd - nodeBegin) :
161 path.substr(nodeBegin)
162 );
163 }
164 }
165 // resolve POSIX escape sequences in all nodes
166 for (int iNode = 0; iNode < result.elements.size(); iNode++) {
167 std::string& s = result.elements[iNode];
168 for (int pos = s.find('%'); pos < s.length(); pos = s.find('%', ++pos)) {
169 if (pos+1 >= s.length()) { // unexpected character
170 //TODO: we might want to throw an exception here, for now we simply replace the character by '?'
171 s.replace(pos, 1, "?");
172 continue;
173 }
174 if (s.c_str()[pos+1] == '%') {
175 s.replace(pos, 2, "%");
176 continue;
177 }
178 if (pos+2 >= s.length()) {
179 //TODO: we might want to throw an exception here, for now we simply replace the character by '?'
180 s.replace(pos, 2, "?");
181 continue;
182 }
183 // expecting a "%HH" sequence here, convert it into the respective character
184 const std::string sHex = s.substr(pos+1, 2);
185 char cAscii = hexsToNumber(sHex.c_str()[1], sHex.c_str()[0]);
186 char pcAscii[] = { cAscii, 0 };
187 s.replace(pos, 3, pcAscii);
188 }
189 }
190 return result;
191 }
192
193 Path Path::fromDbPath(std::string path) {
194 Path result;
195 // first split the nodes
196 {
197 int nodeEnd;
198 for (
199 int nodeBegin = path.find_first_not_of('/');
200 nodeBegin != std::string::npos;
201 nodeBegin = path.find_first_not_of('/', nodeEnd)
202 ) {
203 nodeEnd = path.find_first_of('/', nodeBegin);
204
205 std::string s = (nodeEnd != std::string::npos) ?
206 path.substr(nodeBegin, nodeEnd - nodeBegin) :
207 path.substr(nodeBegin);
208
209 for (int i = 0; i < s.length(); i++) if (s.at(i) == '\0') s.at(i) = '/';
210 result.appendNode(s);
211 }
212 }
213 return result;
214 }
215
216 Path Path::fromWindows(std::string path) {
217 Path result;
218
219 int nodeEnd = 0;
220
221 // first retrieve drive
222 if (path.size() >= 2 && path.c_str()[1] == ':') {
223 result.setDrive(path.c_str()[0]);
224 nodeEnd = 2;
225 }
226
227 // split the nodes
228 {
229 for (
230 int nodeBegin = path.find_first_not_of('\\', nodeEnd);
231 nodeBegin != std::string::npos;
232 nodeBegin = path.find_first_not_of('\\', nodeEnd)
233 ) {
234 nodeEnd = path.find_first_of('\\', nodeBegin);
235 result.appendNode(
236 (nodeEnd != std::string::npos) ?
237 path.substr(nodeBegin, nodeEnd - nodeBegin) :
238 path.substr(nodeBegin)
239 );
240 }
241 }
242
243 return result;
244 }
245
246 } // namespace LinuxSampler

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