1 /*
2 Copyright (C) 2007 by Robert Knight <robertknight@gmail.com>
3
4 Rewritten for QT4 by e_k <e_k at users.sourceforge.net>, Copyright (C)2008
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (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
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
19 02110-1301 USA.
20 */
21
22 // Own
23 #include "ShellCommand.h"
24
25 //some versions of gcc(4.3) require explicit include
26 #include <cstdlib>
27
28
29 using namespace Konsole;
30
31 // expands environment variables in 'text'
32 // function copied from kdelibs/kio/kio/kurlcompletion.cpp
33 static bool expandEnv(QString & text);
34
ShellCommand(const QString & fullCommand)35 ShellCommand::ShellCommand(const QString & fullCommand)
36 {
37 bool inQuotes = false;
38
39 QString builder;
40
41 for ( int i = 0 ; i < fullCommand.count() ; i++ ) {
42 QChar ch = fullCommand[i];
43
44 const bool isLastChar = ( i == fullCommand.count() - 1 );
45 const bool isQuote = ( ch == QLatin1Char('\'') || ch == QLatin1Char('\"') );
46
47 if ( !isLastChar && isQuote ) {
48 inQuotes = !inQuotes;
49 } else {
50 if ( (!ch.isSpace() || inQuotes) && !isQuote ) {
51 builder.append(ch);
52 }
53
54 if ( (ch.isSpace() && !inQuotes) || ( i == fullCommand.count()-1 ) ) {
55 _arguments << builder;
56 builder.clear();
57 }
58 }
59 }
60 }
ShellCommand(const QString & command,const QStringList & arguments)61 ShellCommand::ShellCommand(const QString & command , const QStringList & arguments)
62 {
63 _arguments = arguments;
64
65 if ( !_arguments.isEmpty() ) {
66 _arguments[0] = command;
67 }
68 }
fullCommand() const69 QString ShellCommand::fullCommand() const
70 {
71 return _arguments.join(QLatin1Char(' '));
72 }
command() const73 QString ShellCommand::command() const
74 {
75 if ( !_arguments.isEmpty() ) {
76 return _arguments[0];
77 } else {
78 return QString();
79 }
80 }
arguments() const81 QStringList ShellCommand::arguments() const
82 {
83 return _arguments;
84 }
isRootCommand() const85 bool ShellCommand::isRootCommand() const
86 {
87 Q_ASSERT(0); // not implemented yet
88 return false;
89 }
isAvailable() const90 bool ShellCommand::isAvailable() const
91 {
92 Q_ASSERT(0); // not implemented yet
93 return false;
94 }
expand(const QStringList & items)95 QStringList ShellCommand::expand(const QStringList & items)
96 {
97 QStringList result;
98
99 for(const QString &item : items) {
100 result << expand(item);
101 }
102
103 return result;
104 }
expand(const QString & text)105 QString ShellCommand::expand(const QString & text)
106 {
107 QString result = text;
108 expandEnv(result);
109 return result;
110 }
111
112 /*
113 * expandEnv
114 *
115 * Expand environment variables in text. Escaped '$' characters are ignored.
116 * Return true if any variables were expanded
117 */
expandEnv(QString & text)118 static bool expandEnv( QString & text )
119 {
120 // Find all environment variables beginning with '$'
121 //
122 int pos = 0;
123
124 bool expanded = false;
125
126 while ( (pos = text.indexOf(QLatin1Char('$'), pos)) != -1 ) {
127
128 // Skip escaped '$'
129 //
130 if ( pos > 0 && text.at(pos-1) == QLatin1Char('\\') ) {
131 pos++;
132 }
133 // Variable found => expand
134 //
135 else {
136 // Find the end of the variable = next '/' or ' '
137 //
138 int pos2 = text.indexOf( QLatin1Char(' '), pos+1 );
139 int pos_tmp = text.indexOf( QLatin1Char('/'), pos+1 );
140
141 if ( pos2 == -1 || (pos_tmp != -1 && pos_tmp < pos2) ) {
142 pos2 = pos_tmp;
143 }
144
145 if ( pos2 == -1 ) {
146 pos2 = text.length();
147 }
148
149 // Replace if the variable is terminated by '/' or ' '
150 // and defined
151 //
152 if ( pos2 >= 0 ) {
153 int len = pos2 - pos;
154 QString key = text.mid( pos+1, len-1);
155 QString value =
156 QString::fromLocal8Bit( qgetenv(key.toLocal8Bit().constData()) );
157
158 if ( !value.isEmpty() ) {
159 expanded = true;
160 text.replace( pos, len, value );
161 pos = pos + value.length();
162 } else {
163 pos = pos2;
164 }
165 }
166 }
167 }
168
169 return expanded;
170 }
171