//#include "Executor.ih"
// Custom includes
+#include <boost/utility.hpp>
+#include <boost/range/iterator_range.hpp>
+#include <boost/bind.hpp>
+#include "../Utils/senfassert.hh"
+#include "../Utils/Range.hh"
+#include "../Utils/String.hh"
//#include "Executor.mpp"
#define prefix_
///////////////////////////////cc.p////////////////////////////////////////
+namespace {
+
+ struct TraverseTokens {
+ typedef std::string const & result_type;
+ result_type operator()(senf::console::Token const & token) const {
+ return token.value();
+ }
+ };
+
+}
+
///////////////////////////////////////////////////////////////////////////
// senf::console::Executor
-prefix_ bool senf::console::Executor::operator()(ParseCommandInfo const & command,
- std::ostream & output)
+prefix_ senf::console::DirectoryNode & senf::console::Executor::cwd()
+ const
{
- SENF_LOG(( "Executing: " << command ));
+ SENF_ASSERT( ! cwd_.empty() );
+ while (cwd_.size()>1 && (cwd_.back().expired() || ! cwd_.back().lock()->active()))
+ cwd_.pop_back();
+ return * cwd_.back().lock();
+}
+
+prefix_ std::string senf::console::Executor::cwdPath()
+ const
+{
+ if (skipping())
+ return "";
+ return "/" + senf::stringJoin(
+ senf::make_transform_range(
+ boost::make_iterator_range(boost::next(cwd_.begin()), cwd_.end()),
+ boost::bind(&DirectoryNode::name, boost::bind(&DirectoryNode::weak_ptr::lock, _1))),
+ "/" );
+}
- if (cwd_.expired())
- cwd_ = boost::static_pointer_cast<DirectoryNode>(
- root().shared_from_this());
+prefix_ void senf::console::Executor::execute(std::ostream & output,
+ ParseCommandInfo const & command)
+{
+ SENF_LOG(( "Executing: " << command ));
- switch(command.builtin()) {
- case ParseCommandInfo::NoBuiltin :
- break;
+ if (! skipping())
+ (void) cwd(); // Prune the cwd path of expired entries
- case ParseCommandInfo::BuiltinCD :
- if ( command.arguments() &&
- ! chdir(command.arguments().begin()[0]) )
- output << "invalid directory\n";
- break;
+ try {
+ switch(command.builtin()) {
+ case ParseCommandInfo::NoBuiltin :
+ if (skipping())
+ return;
+ exec(output, command);
+ break;
- case ParseCommandInfo::BuiltinLS :
- for (DirectoryNode::child_iterator i (cwd().children().begin());
- i != cwd().children().end(); ++i) {
- output << i->first;
+ case ParseCommandInfo::BuiltinCD :
+ if (skipping())
+ break;
try {
- (void) cwd()(i->first);
+ // The parser ensures, we have exactly one argument
+ cd(*command.arguments().begin());
}
- catch (std::bad_cast &) {
- output << "/";
+ catch (IgnoreCommandException &) {
+ throw SyntaxErrorException(
+ "'cd' cannot be skipped (don't use 'cd' in conf-files)");
}
- output << "\n";
- }
- break;
-
- case ParseCommandInfo::BuiltinPUSHD :
- dirstack_.push_back(cwd_);
- if ( command.arguments()
- && ! chdir(command.arguments().begin()[0]) )
- output << "invalid directory\n";
- break;
-
- case ParseCommandInfo::BuiltinPOPD :
- if (! dirstack_.empty()) {
- cwd_ = dirstack_.back();
- dirstack_.pop_back();
- }
- break;
+ break;
+
+ case ParseCommandInfo::BuiltinLS :
+ if (skipping())
+ break;
+ // The parser ensures, we have either one or no argument
+ ls( output,
+ command.tokens().empty() ? command.tokens() : *command.arguments().begin() );
+ break;
+
+ case ParseCommandInfo::BuiltinPUSHD :
+ // The parser ensures, we have exactly one argument
+ pushd( *command.arguments().begin() );
+ break;
+
+ case ParseCommandInfo::BuiltinPOPD :
+ // The parser ensures, we have no arguments
+ popd();
+ break;
+
+ case ParseCommandInfo::BuiltinEXIT :
+ if (skipping())
+ break;
+ // The parser ensures, we have no arguments
+ exit();
+ break;
- case ParseCommandInfo::BuiltinEXIT :
- throw ExitException();
+ case ParseCommandInfo::BuiltinHELP :
+ if (skipping())
+ break;
+ // The parser ensures, we have either one or no arguments
+ help( output,
+ command.tokens().empty() ? command.tokens() : *command.arguments().begin() );
+ break;
+
+ }
}
- return true;
+ catch (InvalidPathException &) {
+ throw SyntaxErrorException("invalid path");
+ }
+ catch (InvalidDirectoryException &) {
+ throw SyntaxErrorException("invalid directory");
+ }
+ catch (InvalidCommandException &) {
+ throw SyntaxErrorException("invalid command");
+ }
+ catch (IgnoreCommandException &) {}
}
-prefix_ bool senf::console::Executor::chdir(ParseCommandInfo::argument_value_type const & path)
+prefix_ void senf::console::Executor::exec(std::ostream & output,
+ ParseCommandInfo const & command)
{
- if (path.size() == 1 && path.begin()->value() == "-") {
- if (oldCwd_.expired()) {
- oldCwd_ = cwd_;
- cwd_ = boost::static_pointer_cast<DirectoryNode>(
- root().shared_from_this());
+ GenericNode & node ( traverseNode(command.commandPath()) );
+ DirectoryNode * dir ( dynamic_cast<DirectoryNode*>(&node) );
+ if ( dir ) {
+ if (autocd_ && command.tokens().empty()) {
+ cd( boost::make_iterator_range(
+ command.commandPath().begin(),
+ command.commandPath().end()) );
} else
- swap(cwd_, oldCwd_);
+ throw InvalidCommandException();
+ } else {
+ dynamic_cast<CommandNode &>(node)(output, command);
+ }
+}
+
+
+prefix_ void senf::console::Executor::cd(ParseCommandInfo::TokensRange dir)
+{
+ if (dir.size() == 1 && *dir.begin() == WordToken("-")) {
+ cwd_.swap(oldCwd_);
+ (void) cwd(); // Prune any expired items
}
else {
+ // We need to use a temporary so an error somewhere while traversing the dir does not cause
+ // the current directory to change.
+ Path newDir (cwd_);
+ traverseDirectory(dir, newDir);
+ oldCwd_.swap(cwd_);
+ cwd_.swap(newDir);
+ }
+}
+
+prefix_ void senf::console::Executor::ls(std::ostream & output,
+ ParseCommandInfo::TokensRange path)
+{
+ Path dir (cwd_);
+ traverseDirectory(path, dir);
+ DirectoryNode & node (*dir.back().lock());
+ DirectoryNode::child_iterator i (node.children().begin());
+ DirectoryNode::child_iterator const i_end (node.children().end());
+ for (; i != i_end; ++i) {
+ output << i->first;
+ if (boost::dynamic_pointer_cast<DirectoryNode>(i->second))
+ output << "/";
+ output << "\n";
+ }
+}
+
+prefix_ void senf::console::Executor::pushd(ParseCommandInfo::TokensRange dir)
+{
+ Path newDir (cwd_);
+ if (! skipping()) {
try {
- DirectoryNode::ptr dir (cwd_.lock());
- ParseCommandInfo::token_iterator i (path.begin());
- ParseCommandInfo::token_iterator const i_end (path.end());
- if (i != i_end && i->value().empty()) {
- dir = boost::static_pointer_cast<DirectoryNode>(
- root().shared_from_this());
- ++ i;
- }
- for (; i != i_end; ++i) {
- if (i->value() == "..") {
- dir = dir->parent();
- if (! dir)
- dir = boost::static_pointer_cast<DirectoryNode>(
- root().shared_from_this());
- }
- else if (! i->value().empty() && i->value() != ".")
- dir = boost::static_pointer_cast<DirectoryNode>(
- (*dir)[i->value()].shared_from_this());
- }
- oldCwd_ = cwd_;
- cwd_ = dir;
+ traverseDirectory(dir, newDir);
}
- catch (std::bad_cast &) {
- return false;
+ catch (IgnoreCommandException &) {
+ newDir.clear();
}
- catch (UnknownNodeNameException &) {
- return false;
+ }
+ dirstack_.push_back(Path());
+ dirstack_.back().swap(cwd_);
+ cwd_.swap(newDir);
+}
+
+prefix_ void senf::console::Executor::popd()
+{
+ if (! dirstack_.empty()) {
+ cwd_.swap(dirstack_.back());
+ dirstack_.pop_back();
+ }
+}
+
+prefix_ void senf::console::Executor::exit()
+{
+ throw ExitException();
+}
+
+prefix_ void senf::console::Executor::help(std::ostream & output,
+ ParseCommandInfo::TokensRange path)
+{
+ GenericNode const & node (traverseNode(path));
+ output << prettyName(typeid(node)) << " at " << node.path() << "\n\n";
+ node.help(output);
+ output << std::flush;
+}
+
+prefix_ senf::console::GenericNode &
+senf::console::Executor::traverseNode(ParseCommandInfo::TokensRange const & path)
+{
+ if (path.empty())
+ return *cwd_.back().lock();
+ try {
+ Path dir (cwd_);
+ traverseDirectory(boost::make_iterator_range(
+ path.begin(),
+ boost::prior(path.end())),
+ dir);
+ DirectoryNode & base (*dir.back().lock());
+ std::string const & name (boost::prior(path.end())->value());
+ if (policy_)
+ policy_( base, name );
+ return dir.back().lock()->get(name);
+ }
+ catch (UnknownNodeNameException &) {
+ throw InvalidPathException();
+ }
+}
+
+prefix_ void
+senf::console::Executor::traverseDirectory(ParseCommandInfo::TokensRange const & path,
+ Path & dir)
+{
+ try {
+ ParseCommandInfo::TokensRange::const_iterator i (path.begin());
+ ParseCommandInfo::TokensRange::const_iterator const i_end (path.end());
+ for (; i != i_end; ++i) {
+ if (*i == NoneToken()) {
+ if (i == path.begin()) {
+ dir.clear();
+ dir.push_back(root_);
+ }
+ }
+ else if (*i == WordToken("..")) {
+ if (dir.size() > 1)
+ dir.pop_back();
+ }
+ else if (*i == WordToken("."))
+ ;
+ else {
+ DirectoryNode & base (*dir.back().lock());
+ if (policy_)
+ policy_( base, i->value() );
+ dir.push_back(base[i->value()].thisptr());
+ }
}
}
- return true;
+ catch (std::bad_cast &) {
+ throw InvalidDirectoryException();
+ }
+ catch (UnknownNodeNameException &) {
+ throw InvalidDirectoryException();
+ }
}
-
+
///////////////////////////////cc.e////////////////////////////////////////
#undef prefix_
//#include "Executor.mpp"
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