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72 lines
2.6 KiB
C++
72 lines
2.6 KiB
C++
// Filename: configVariableSearchPath.cxx
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// Created by: drose (21Oct04)
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//
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////////////////////////////////////////////////////////////////////
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//
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// PANDA 3D SOFTWARE
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// Copyright (c) 2001 - 2004, Disney Enterprises, Inc. All rights reserved
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//
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// All use of this software is subject to the terms of the Panda 3d
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// Software license. You should have received a copy of this license
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// along with this source code; you will also find a current copy of
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// the license at http://etc.cmu.edu/panda3d/docs/license/ .
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//
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// To contact the maintainers of this program write to
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// panda3d-general@lists.sourceforge.net .
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//
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////////////////////////////////////////////////////////////////////
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#include "configVariableSearchPath.h"
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#include "executionEnvironment.h"
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////////////////////////////////////////////////////////////////////
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// Function: ConfigVariableSearchPath::get_value
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// Access: Published
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// Description:
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////////////////////////////////////////////////////////////////////
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const DSearchPath &ConfigVariableSearchPath::
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get_value() const {
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nassertr(_core != (ConfigVariableCore *)NULL, _value);
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if (_value_stale || _value_seq != _core->get_value_seq()) {
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((ConfigVariableSearchPath *)this)->reload_search_path();
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}
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return _value;
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}
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////////////////////////////////////////////////////////////////////
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// Function: ConfigVariableSearchPath::reload_search_path
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// Access: Private
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// Description: Recopies the config variable into the search path for
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// returning its value.
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////////////////////////////////////////////////////////////////////
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void ConfigVariableSearchPath::
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reload_search_path() {
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nassertv(_core != (ConfigVariableCore *)NULL);
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_value.clear();
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_value.append_path(_prefix);
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int num_unique_references = _core->get_num_unique_references();
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for (int i = 0; i < num_unique_references; i++) {
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const ConfigDeclaration *decl = _core->get_unique_reference(i);
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const ConfigPage *page = decl->get_page();
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Filename page_filename(page->get_name());
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Filename page_dirname = page_filename.get_dirname();
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ExecutionEnvironment::shadow_environment_variable("THIS_PRC_DIR", page_dirname.to_os_specific());
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string expanded = ExecutionEnvironment::expand_string(decl->get_string_value());
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ExecutionEnvironment::clear_shadow("THIS_PRC_DIR");
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if (!expanded.empty()) {
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_value.append_directory(Filename::from_os_specific(expanded));
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}
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}
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_value.append_path(_postfix);
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if (_value.is_empty()) {
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// An empty search path implicitly has "." on it.
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_value.append_directory(".");
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}
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_value_seq = _core->get_value_seq();
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_value_stale = false;
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}
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