423 lines
11 KiB
C
423 lines
11 KiB
C
/*
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* CDE - Common Desktop Environment
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*
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* Copyright (c) 1993-2012, The Open Group. All rights reserved.
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*
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* These libraries and programs are free software; you can
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* redistribute them and/or modify them under the terms of the GNU
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* Lesser General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* These libraries and programs are distributed in the hope that
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* they will be useful, but WITHOUT ANY WARRANTY; without even the
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* implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU Lesser General Public License for more
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* details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with these libraries and programs; if not, write
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* to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
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* Floor, Boston, MA 02110-1301 USA
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*/
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/* $XConsortium: SearchPath.C /main/3 1995/11/03 12:32:30 rswiston $ */
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/*******************************************************************
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** (c) Copyright Hewlett-Packard Company, 1990, 1991, 1992, 1993.
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** All rights are reserved. Copying or other reproduction of this
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** program except for archival purposes is prohibited without prior
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** written consent of Hewlett-Packard Company.
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********************************************************************
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****************************<+>*************************************/
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#include "SearchPath.h"
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#include "TTFile.h"
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#include "Options.h"
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extern Options * options;
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/**********************************************************************
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*
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* SearchPath() - the constructor simply initializes the member data.
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*
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**********************************************************************/
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SearchPath::SearchPath
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(
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CDEEnvironment * user_,
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const char * envvar,
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const char * sep
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) : user(user_),
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environment_var(envvar),
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separator(sep),
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parse_state(0),
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final_search_path(""),
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norm_search_path("")
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{
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}
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/**********************************************************************
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*
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* ~SearchPath() - the destructor - nothing to do
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*
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**********************************************************************/
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SearchPath::~SearchPath()
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{
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}
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/**********************************************************************
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*
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* constructPath - this member function takes a host and a path and
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* either calls the Tooltalk filemapping library or
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* constructs it in the standard fashion.
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*
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**********************************************************************/
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CString SearchPath::ConstructPath
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(
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const CString & path,
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const CString * host,
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unsigned char
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)
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{
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CString final_path;
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if (host) {
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if (options->doingTooltalk()) {
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TTFile * file;
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Try {
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file = new TTFile(*host,path);
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if (!file->ttFileOpFailed())
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final_path = *file;
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if (options->removeAutoMountPoint()) {
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if (final_path.contains(options->getAutoMountPoint(),
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"","/"))
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final_path.replace(options->getAutoMountPoint(),"");
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}
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}
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Catch (TTFile::TT_Exception *, file) {
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final_path = user->OS()->MountPoint() + *host + path;
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}
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delete file;
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}
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else
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final_path = user->OS()->MountPoint() + *host + path;
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}
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else
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final_path = path;
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return final_path;
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}
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/*************************************************************************
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* AssembleString()
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*
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* Given a series of string elements one at a time--either a host
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* or a path, in any order--tokenize them, and create
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* a normalized path of the form:
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*
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* "host:/path,host:/path"
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*
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* Return this normalized path in $RETURN_STRING.
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*
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*************************************************************************/
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void SearchPath::AssembleString
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(
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const CString & path_element
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)
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{
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if (parse_state == 1 && norm_search_path.length())
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if (norm_search_path[norm_search_path.length()-1] != ',')
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norm_search_path += ",";
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if (path_element.length() == 0) {
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if (parse_state == 2) {
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CString path(save_host + ":" + user->SysAdmConfig());
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if (!norm_search_path.contains(path, ",", ","))
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norm_search_path += path;
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parse_state = 1;
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}
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}
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else if (path_element[0] == '/') {
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// B -- a path
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if (parse_state == 1) {
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CString path(user->OS()->LocalHost() + ":" + path_element);
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if (!norm_search_path.contains(path, ",", ","))
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norm_search_path += path;
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parse_state = 1;
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}
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else if (parse_state == 2) {
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CString path(save_host + ":" + path_element);
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if (!norm_search_path.contains(path, ",", ","))
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norm_search_path += path;
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parse_state = 1;
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}
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}
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else if (path_element[0] == '>') {
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// terminator--write out the saved host and default path.
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CString path(save_host + ":" + user->SysAdmConfig());
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if (!norm_search_path.contains(path, ",", ","))
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norm_search_path += path;
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parse_state = 3;
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}
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else {
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// A -- a host
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if (parse_state == 1) {
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save_host = path_element;
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parse_state = 2;
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}
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else if (parse_state == 2) {
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CString path(save_host + ":" + user->SysAdmConfig());
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if (!norm_search_path.contains(path, ",", ","))
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norm_search_path += path;
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save_host = path_element;
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parse_state = 2;
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}
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}
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}
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/*****************************************************************
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* NormalizePath()
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*
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* This function takes a complete string and calls the helper
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* function AssembleString() to build a normalized path.
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*
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*****************************************************************/
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void SearchPath::NormalizePath()
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{
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parse_state = 1;
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if (search_path.length()) {
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CTokenizedString subpath(search_path,":,");
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CString dirname = subpath.next();
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while (!subpath.Finished()) {
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AssembleString (dirname);
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dirname = subpath.next();
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}
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}
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// flush the buffer
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if (parse_state == 2)
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AssembleString(">");
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else
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return;
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}
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/*********************************************************************
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* AddToPath()
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*
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* Take the second parameter (if it exists), and add the
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* first parameter (always assumed) to its end separated by the
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* specified separator
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*********************************************************************/
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void SearchPath::AddToPath
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(
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const CString & path
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)
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{
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if (!final_search_path.isNull()) {
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if (!final_search_path.contains (path, Separator().data(),
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Separator().data())) {
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final_search_path += Separator();
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final_search_path += path;
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}
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}
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else
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final_search_path += path;
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}
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/*********************************************************************
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* TraversePath()
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*
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* Parse a given search path, using comma (,) and colon (:) as
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* delimiters. Pass the normalized path to the virtual MakePath.
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* function.
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*
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* N.B. We assume that we have a normalized path at this point.
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*
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*********************************************************************/
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void SearchPath::TraversePath()
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{
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if (!norm_search_path.isNull()) {
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CTokenizedString subpath(norm_search_path,",");
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CString dirname = subpath.next();
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while (!dirname.isNull()) {
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MakePath (dirname);
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dirname = subpath.next();
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}
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}
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}
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/*********************************************************************
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* AddPredefinedPath()
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*
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* If it is possible that an environment variable can be set
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* before dtsearchpath is run, check for its existence, and if it
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* exists, append it to the searchpath.
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*
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*********************************************************************/
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void SearchPath::AddPredefinedPath()
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{
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CString envVar_in(environment_var);
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envVar_in += "SEARCHPATH";
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CString envVar_out = user->OS()->getEnvironmentVariable(envVar_in.data());
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if (!envVar_out.isNull()) {
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CString specified_path(envVar_out);
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if (!specified_path.contains(search_path))
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search_path += Separator() + specified_path;
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else
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search_path = specified_path;
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}
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}
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/*********************************************************************
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* validSearchPath()
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*
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* This member function verifies that the path in question is a
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* standard CDE location, i.e. /etc/dt/appconfig or /usr/dt/appconfig
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* so that the appropriate massaging can take place.
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*
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*********************************************************************/
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int SearchPath::validSearchPath
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(
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const CString & st
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) const
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{
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if (st == user->SysAdmConfig())
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return 1;
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if (st == user->FactoryInstall())
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return 1;
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// If this is an APP-specified path, it also needs to be massaged.
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// The elements in the APP paths may be host:/path so use the
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// colon as the leader.
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if (user->DTAPPSP() &&
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user->DTAPPSP()->contains (st, ":", separator.data()))
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return 1;
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if (user->DTUSERAPPSP() &&
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user->DTUSERAPPSP()->contains (st, ":", separator.data()))
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return 1;
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// they may also be there by themselves: "host:,/path" so use the
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// comma as the leader.
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if (user->DTAPPSP() &&
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user->DTAPPSP()->contains (st, ",", separator.data()))
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return 1;
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if (user->DTUSERAPPSP() &&
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user->DTUSERAPPSP()->contains (st, ",", separator.data()))
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return 1;
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return 0;
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}
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/*********************************************************************
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* useSystemPath()
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*
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* This member function verifies whether system environment variable
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* should be left unmodified, since some other configuraton mechanism
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* is in effect.
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*
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*/
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int SearchPath::useSystemPath()
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{
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return 0;
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}
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/*****************************************************************
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* ExportPath()
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*
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* Export the variable value to the rest of the session.
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*
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*****************************************************************/
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void SearchPath::ExportPath()
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{
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CString env(environment_var);
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env += "SEARCHPATH";
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if (!useSystemPath()) {
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user->OS()->shell()->putToEnv(env, final_search_path.data());
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}
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}
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/*****************************************************************
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* Print()
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*
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* In the absence of iostreams, use printf to output information
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*
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*****************************************************************/
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void SearchPath::Print()
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{
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printf("%sSEARCHPATH:\n", GetEnvVar());
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CString sp(GetSearchPath());
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if (!useSystemPath() && !sp.isNull()) {
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CTokenizedString path (sp,Separator().data());
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CString subpath = path.next();
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while (!subpath.isNull()) {
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printf("\t%s\n",subpath.data());
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subpath = path.next();
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}
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printf("\n");
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}
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}
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/****************************************************************
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* PrettyPrint()
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*
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* Print the list such that each entry occupys its own line
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*
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****************************************************************/
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void SearchPath::PrettyPrint
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(
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std::ostream & os
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) const
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{
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CTokenizedString path (GetSearchPath(), Separator().data());
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CString subpath = path.next();
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while (!subpath.isNull()) {
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os << " " << subpath << std::endl;
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subpath = path.next();
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}
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os << std::endl;
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}
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/****************************************************************
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* operator<<()
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*
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* Allow SearchPath types to be output using iostreams.
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*
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****************************************************************/
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std::ostream & operator<<
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(
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std::ostream & os,
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const SearchPath & sp
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)
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{
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os << sp.GetEnvVar() << "SEARCHPATH:" << std::endl;
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sp.PrettyPrint(os);
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return os;
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}
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