4 // Fraunhofer Institute for Open Communication Systems (FOKUS)
5 // Competence Center NETwork research (NET), St. Augustin, GERMANY
6 // Stefan Bund <g0dil@berlios.de>
8 // This program is free software; you can redistribute it and/or modify
9 // it under the terms of the GNU General Public License as published by
10 // the Free Software Foundation; either version 2 of the License, or
11 // (at your option) any later version.
13 // This program is distributed in the hope that it will be useful,
14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 // GNU General Public License for more details.
18 // You should have received a copy of the GNU General Public License
19 // along with this program; if not, write to the
20 // Free Software Foundation, Inc.,
21 // 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
24 \brief Executor public header */
26 #ifndef HH_SENF_Scheduler_Console_Executor_
27 #define HH_SENF_Scheduler_Console_Executor_ 1
30 #include <boost/utility.hpp>
32 #include "../../Utils/Logger/SenfLog.hh"
35 //#include "Executor.mpp"
36 ///////////////////////////////hh.p////////////////////////////////////////
41 /** \brief Execute config/console commands
43 The Executor interprets parsed config/console commands and executes them. It manages the
44 current execution context (current directory, directory stack and so on).
46 The executor is normally called directly by the parser callback for each command.
48 Executing the built-in 'exit' command will throw Executor::ExitException. This exception
49 (which is not derived from std::exception since it's not a real exception) must be handled
52 All directories are managed using weak pointers. If any of the directories expires (current
53 directory, directory stack, last directory) it will be replaced with the root
54 directory. Directories expire when they are destructed or when they are detached from the
55 config tree root node.
60 SENF_LOG_CLASS_AREA();
61 SENF_LOG_DEFAULT_LEVEL( senf::log::VERBOSE );
63 ///////////////////////////////////////////////////////////////////////////
66 /// Thrown by built-in 'exit' command
67 struct ExitException {};
69 /// Executor policy function
70 typedef boost::function<void (DirectoryNode &,std::string const &)> SecurityPolicy;
72 /// Thrown by the SecurityPolicy to silently ignore a command
73 struct IgnoreCommandException {};
75 typedef void result_type;
77 ///////////////////////////////////////////////////////////////////////////
78 //\/name Structors and default members
84 ///////////////////////////////////////////////////////////////////////////
86 void execute(std::ostream & output, ParseCommandInfo const & command);
88 /**< Output will be written to \a output.
89 Same as operator()(). */
91 void operator()(std::ostream & output, ParseCommandInfo const & command);
93 /**< Output will be written to \a output.
95 GenericNode & getNode(ParseCommandInfo const & command);
96 DirectoryNode & cwd() const; ///< Current working directory
97 std::string cwdPath() const; ///< Return pathname of current directory
98 bool skipping() const; ///< \c true, if currently skipping a directory group
100 bool autocd() const; ///< Get current autocd status
101 /**< if autocd is enabled, specifying a directory name as
102 command will cd to that directory. Disabled by
103 default (but enabled automatically by the interactive
105 Executor & autocd(bool v); ///< Set autocd status
106 /**< \see autocd() */
108 bool autocomplete() const; ///< Get current autocomplete status
109 /**< if autocomplete is enabled, path components which can
110 be uniquely completed will be completed
111 automatically. Disabled by default (but enabled
112 automatically by the interactive console). */
114 Executor & autocomplete(bool v); ///< Set autocomplete status
115 /**< \see autocomplete() */
118 DirectoryNode & chroot() const; ///< Get root node
119 /**< The root node defaults to senf::console::root(). If
120 changed, all path references are relative to this node
121 and objects outside that tree cannot be accessed. */
123 Executor & chroot(DirectoryNode & node); ///< chroot into given directory
124 /**< After this call, all path's are interpreted relative to
125 \a node and only nodes in the tree rooted at \a node
126 are accessible via the executor. This value defaults to
127 senf::console::root(). */
129 Executor & policy(SecurityPolicy policy = SecurityPolicy()); ///< Set security policy
130 /**< The security policy is called before traversing a node
131 to validate that access. */
136 typedef std::vector<DirectoryNode::weak_ptr> Path;
138 void exec(std::ostream & output, ParseCommandInfo const & command);
140 void cd(ParseCommandInfo::TokensRange dir);
141 void ls(std::ostream & output, ParseCommandInfo::TokensRange dir);
142 void lr(std::ostream & output, ParseCommandInfo::TokensRange dir);
143 void pushd(ParseCommandInfo::TokensRange dir);
146 void help(std::ostream & output, ParseCommandInfo::TokensRange path);
148 GenericNode & traverseNode(ParseCommandInfo::TokensRange const & path);
149 void traverseDirectory(ParseCommandInfo::TokensRange const & path,
151 std::string complete(DirectoryNode & dir, std::string const & name);
153 struct InvalidPathException {
155 InvalidPathException() : path() {}
156 InvalidPathException(std::string path_) : path(path_) {}
159 struct InvalidDirectoryException {
161 InvalidDirectoryException() : path() {}
162 InvalidDirectoryException(std::string path_) : path(path_) {}
164 struct InvalidCommandException {};
166 DirectoryNode::ptr root_;
167 SecurityPolicy policy_;
171 typedef std::vector<Path> DirStack;
178 void senf_console_format_value(DirectoryNode::ptr value, std::ostream & os);
182 ///////////////////////////////hh.e////////////////////////////////////////
183 #include "Executor.cci"
184 //#include "Executor.ct"
185 //#include "Executor.cti"
192 // comment-column: 40
193 // c-file-style: "senf"
194 // indent-tabs-mode: nil
195 // ispell-local-dictionary: "american"
196 // compile-command: "scons -u test"