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// Copyright (C) 2011-2021 Internet Systems Consortium, Inc. ("ISC")
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
#include <config.h>
#include <iostream>
#include <algorithm>
#include <string>
#include <ctype.h>
#include <util/filename.h>
using namespace std;
namespace isc {
namespace util {
// Split string into components. Any backslashes are assumed to have
// been replaced by forward slashes.
void
Filename::split(const string& full_name, string& directory, string& name,
string& extension) const {
directory = name = extension = "";
if (!full_name.empty()) {
bool dir_present = false;
// Find the directory.
size_t last_slash = full_name.find_last_of('/');
if (last_slash != string::npos) {
// Found the last slash, so extract directory component and
// set where the scan for the last_dot should terminate.
directory = full_name.substr(0, last_slash + 1);
if (last_slash == full_name.size()) {
// The entire string was a directory, so exit not and don't
// do any more searching.
return;
}
// Found a directory so note the fact.
dir_present = true;
}
// Now search backwards for the last ".".
size_t last_dot = full_name.find_last_of('.');
if ((last_dot == string::npos) ||
(dir_present && (last_dot < last_slash))) {
// Last "." either not found or it occurs to the left of the last
// slash if a directory was present (so it is part of a directory
// name). In this case, the remainder of the string after the slash
// is the name part.
name = full_name.substr(last_slash + 1);
return;
}
// Did find a valid dot, so it and everything to the right is the
// extension...
extension = full_name.substr(last_dot);
// ... and the name of the file is everything in between.
if ((last_dot - last_slash) > 1) {
name = full_name.substr(last_slash + 1, last_dot - last_slash - 1);
}
}
}
// Expand the stored filename with the default.
string
Filename::expandWithDefault(const string& defname) const {
string def_directory("");
string def_name("");
string def_extension("");
// Normalize the input string.
string copy_defname = isc::util::str::trim(defname);
#ifdef WIN32
isc::util::str::normalizeSlash(copy_defname);
#endif
// Split into the components
split(copy_defname, def_directory, def_name, def_extension);
// Now construct the result.
string retstring =
(directory_.empty() ? def_directory : directory_) +
(name_.empty() ? def_name : name_) +
(extension_.empty() ? def_extension : extension_);
return (retstring);
}
// Use the stored name as default for a given name
string
Filename::useAsDefault(const string& name) const {
string name_directory("");
string name_name("");
string name_extension("");
// Normalize the input string.
string copy_name = isc::util::str::trim(name);
#ifdef WIN32
isc::util::str::normalizeSlash(copy_name);
#endif
// Split into the components
split(copy_name, name_directory, name_name, name_extension);
// Now construct the result.
string retstring =
(name_directory.empty() ? directory_ : name_directory) +
(name_name.empty() ? name_ : name_name) +
(name_extension.empty() ? extension_ : name_extension);
return (retstring);
}
void
Filename::setDirectory(const std::string& new_directory) {
std::string directory(new_directory);
if (directory.length() > 0) {
// append '/' if necessary
size_t sep = directory.rfind('/');
if (sep == std::string::npos || sep < directory.size() - 1) {
directory += "/";
}
}
// and regenerate the full name
std::string full_name = directory + name_ + extension_;
directory_.swap(directory);
full_name_.swap(full_name);
}
} // namespace log
} // namespace isc
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