1 |
schoenebeck |
1386 |
// qsamplerUtilities.cpp |
2 |
|
|
// |
3 |
|
|
/**************************************************************************** |
4 |
|
|
Copyright (C) 2004-2007, rncbc aka Rui Nuno Capela. All rights reserved. |
5 |
|
|
|
6 |
|
|
This program is free software; you can redistribute it and/or |
7 |
|
|
modify it under the terms of the GNU General Public License |
8 |
|
|
as published by the Free Software Foundation; either version 2 |
9 |
|
|
of the License, or (at your option) any later version. |
10 |
|
|
|
11 |
|
|
This program is distributed in the hope that it will be useful, |
12 |
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 |
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 |
|
|
GNU General Public License for more details. |
15 |
|
|
|
16 |
|
|
You should have received a copy of the GNU General Public License along |
17 |
|
|
with this program; if not, write to the Free Software Foundation, Inc., |
18 |
|
|
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
19 |
|
|
|
20 |
|
|
*****************************************************************************/ |
21 |
|
|
|
22 |
|
|
#include "qsamplerUtilities.h" |
23 |
|
|
|
24 |
|
|
#include "qsamplerMainForm.h" |
25 |
|
|
|
26 |
|
|
#include <stdio.h> |
27 |
|
|
#include <qregexp.h> |
28 |
|
|
|
29 |
schoenebeck |
1461 |
using namespace QSampler; |
30 |
|
|
|
31 |
schoenebeck |
1402 |
namespace qsamplerUtilities { |
32 |
|
|
|
33 |
|
|
static int _hexToNumber(char hex_digit) { |
34 |
|
|
switch (hex_digit) { |
35 |
|
|
case '0': return 0; |
36 |
|
|
case '1': return 1; |
37 |
|
|
case '2': return 2; |
38 |
|
|
case '3': return 3; |
39 |
|
|
case '4': return 4; |
40 |
|
|
case '5': return 5; |
41 |
|
|
case '6': return 6; |
42 |
|
|
case '7': return 7; |
43 |
|
|
case '8': return 8; |
44 |
|
|
case '9': return 9; |
45 |
|
|
|
46 |
|
|
case 'a': return 10; |
47 |
|
|
case 'b': return 11; |
48 |
|
|
case 'c': return 12; |
49 |
|
|
case 'd': return 13; |
50 |
|
|
case 'e': return 14; |
51 |
|
|
case 'f': return 15; |
52 |
|
|
|
53 |
|
|
case 'A': return 10; |
54 |
|
|
case 'B': return 11; |
55 |
|
|
case 'C': return 12; |
56 |
|
|
case 'D': return 13; |
57 |
|
|
case 'E': return 14; |
58 |
|
|
case 'F': return 15; |
59 |
|
|
|
60 |
|
|
default: return 0; |
61 |
|
|
} |
62 |
|
|
} |
63 |
|
|
|
64 |
|
|
static int _hexsToNumber(char hex_digit0, char hex_digit1) { |
65 |
|
|
return _hexToNumber(hex_digit1)*16 + _hexToNumber(hex_digit0); |
66 |
|
|
} |
67 |
|
|
|
68 |
|
|
// returns true if the connected LSCP server supports escape sequences |
69 |
|
|
static bool _remoteSupportsEscapeSequences() { |
70 |
|
|
const lscpVersion_t version = getRemoteLscpVersion(); |
71 |
|
|
// LSCP v1.2 or younger required |
72 |
|
|
return (version.major > 1 || (version.major == 1 && version.minor >= 2)); |
73 |
|
|
} |
74 |
|
|
|
75 |
schoenebeck |
1386 |
// converts the given file path into a path as expected by LSCP 1.2 |
76 |
capela |
1394 |
QString lscpEscapePath ( const QString& sPath ) |
77 |
|
|
{ |
78 |
schoenebeck |
1402 |
if (!_remoteSupportsEscapeSequences()) return sPath; |
79 |
capela |
1394 |
|
80 |
schoenebeck |
1402 |
QString path(sPath); |
81 |
schoenebeck |
1386 |
|
82 |
|
|
// replace POSIX path escape sequences (%HH) by LSCP escape sequences (\xHH) |
83 |
|
|
// TODO: missing code for other systems like Windows |
84 |
|
|
{ |
85 |
|
|
QRegExp regexp("%[0-9a-fA-F][0-9a-fA-F]"); |
86 |
schoenebeck |
1402 |
for (int i = path.find(regexp); i >= 0; i = path.find(regexp, i + 4)) |
87 |
schoenebeck |
1386 |
path.replace(i, 1, "\\x"); |
88 |
|
|
} |
89 |
schoenebeck |
1402 |
// replace POSIX path escape sequence (%%) by its raw character |
90 |
|
|
for (int i = path.find("%%"); i >= 0; i = path.find("%%", ++i)) |
91 |
|
|
path.remove(i, 1); |
92 |
capela |
1394 |
|
93 |
schoenebeck |
1386 |
// replace all non-basic characters by LSCP escape sequences |
94 |
|
|
{ |
95 |
|
|
const char pathSeparator = '/'; |
96 |
|
|
QRegExp regexp(QRegExp::escape("\\x") + "[0-9a-fA-F][0-9a-fA-F]"); |
97 |
|
|
for (int i = 0; i < int(path.length()); i++) { |
98 |
|
|
// first skip all previously added LSCP escape sequences |
99 |
|
|
if (path.find(regexp, i) == i) { |
100 |
|
|
i += 3; |
101 |
|
|
continue; |
102 |
|
|
} |
103 |
|
|
// now match all non-alphanumerics |
104 |
|
|
// (we could exclude much more characters here, but that way |
105 |
|
|
// we're sure it just works^TM) |
106 |
|
|
const char c = path.at(i).latin1(); |
107 |
|
|
if ( |
108 |
|
|
!(c >= '0' && c <= '9') && |
109 |
|
|
!(c >= 'a' && c <= 'z') && |
110 |
|
|
!(c >= 'A' && c <= 'Z') && |
111 |
|
|
!(c == pathSeparator) |
112 |
|
|
) { |
113 |
|
|
// convert the non-basic character into a LSCP escape sequence |
114 |
|
|
char buf[5]; |
115 |
schoenebeck |
1402 |
::snprintf(buf, sizeof(buf), "\\x%02x", static_cast<unsigned char>(c)); |
116 |
schoenebeck |
1386 |
path.replace(i, 1, buf); |
117 |
|
|
i += 3; |
118 |
|
|
} |
119 |
|
|
} |
120 |
|
|
} |
121 |
capela |
1394 |
|
122 |
schoenebeck |
1386 |
return path; |
123 |
|
|
} |
124 |
|
|
|
125 |
schoenebeck |
1402 |
// converts a path returned by a LSCP command (and may contain escape |
126 |
|
|
// sequences) into the appropriate POSIX path |
127 |
|
|
QString lscpEscapedPathToPosix(QString path) { |
128 |
|
|
if (!_remoteSupportsEscapeSequences()) return path; |
129 |
capela |
1394 |
|
130 |
schoenebeck |
1402 |
// first escape all percent ('%') characters for POSIX |
131 |
|
|
for (int i = path.find('%'); i >= 0; i = path.find('%', i+2)) |
132 |
|
|
path.replace(i, 1, "%%"); |
133 |
|
|
|
134 |
|
|
// resolve LSCP hex escape sequences (\xHH) |
135 |
|
|
QRegExp regexp(QRegExp::escape("\\x") + "[0-9a-fA-F][0-9a-fA-F]"); |
136 |
|
|
for (int i = path.find(regexp); i >= 0; i = path.find(regexp, i + 4)) { |
137 |
|
|
const QString sHex = path.mid(i+2, 2).lower(); |
138 |
|
|
// the slash has to be escaped for POSIX as well |
139 |
|
|
if (sHex == "2f") { |
140 |
|
|
path.replace(i, 4, "%2f"); |
141 |
|
|
continue; |
142 |
|
|
} |
143 |
|
|
// all other characters we simply decode |
144 |
|
|
char cAscii = _hexsToNumber(sHex.at(1).latin1(), sHex.at(0).latin1()); |
145 |
|
|
path.replace(i, 4, cAscii); |
146 |
|
|
} |
147 |
|
|
|
148 |
|
|
return path; |
149 |
|
|
} |
150 |
|
|
|
151 |
|
|
// converts a text returned by a LSCP command and may contain escape |
152 |
|
|
// sequences) into raw text, that is with all escape sequences decoded |
153 |
|
|
QString lscpEscapedTextToRaw(QString txt) { |
154 |
|
|
if (!_remoteSupportsEscapeSequences()) return txt; |
155 |
|
|
|
156 |
|
|
// resolve LSCP hex escape sequences (\xHH) |
157 |
|
|
QRegExp regexp(QRegExp::escape("\\x") + "[0-9a-fA-F][0-9a-fA-F]"); |
158 |
|
|
for (int i = txt.find(regexp); i >= 0; i = txt.find(regexp, i + 4)) { |
159 |
|
|
const QString sHex = txt.mid(i+2, 2).lower(); |
160 |
|
|
// decode into raw ASCII character |
161 |
|
|
char cAscii = _hexsToNumber(sHex.at(1).latin1(), sHex.at(0).latin1()); |
162 |
|
|
txt.replace(i, 4, cAscii); |
163 |
|
|
} |
164 |
|
|
|
165 |
|
|
return txt; |
166 |
|
|
} |
167 |
|
|
|
168 |
capela |
1394 |
lscpVersion_t getRemoteLscpVersion (void) |
169 |
|
|
{ |
170 |
schoenebeck |
1386 |
lscpVersion_t result = { 0, 0 }; |
171 |
|
|
|
172 |
schoenebeck |
1461 |
MainForm* pMainForm = MainForm::getInstance(); |
173 |
capela |
1394 |
if (pMainForm == NULL) |
174 |
schoenebeck |
1402 |
return result; |
175 |
|
|
if (pMainForm->client() == NULL) |
176 |
|
|
return result; |
177 |
schoenebeck |
1386 |
|
178 |
|
|
lscp_server_info_t* pServerInfo = |
179 |
|
|
::lscp_get_server_info(pMainForm->client()); |
180 |
capela |
1394 |
if (pServerInfo && pServerInfo->protocol_version) |
181 |
schoenebeck |
1402 |
::sscanf(pServerInfo->protocol_version, "%d.%d", |
182 |
|
|
&result.major, &result.minor); |
183 |
schoenebeck |
1386 |
|
184 |
|
|
return result; |
185 |
|
|
} |
186 |
schoenebeck |
1402 |
|
187 |
|
|
} // namespace qsamplerUtilities |