util/clearcase.c

   1 static const char CVSID[] = "$Id: clearcase.c,v 1.4 2002/06/26 23:39:21 slobasso Exp $";
   2 /*******************************************************************************
   3 *                                                                              *
   4 * clearcase.c -- Nirvana Editor ClearCase support utilities                    *
   5 *                                                                              *
   6 * Copyright (C) 2001 Mark Edel                                                 *
   7 *                                                                              *
   8 * This is free software; you can redistribute it and/or modify it under the    *
   9 * terms of the GNU General Public License as published by the Free Software    *
  10 * Foundation; either version 2 of the License, or (at your option) any later   *
  11 * version.                                                                     *
  12 *                                                                              *
  13 * This software is distributed in the hope that it will be useful, but WITHOUT *
  14 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or        *
  15 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License *
  16 * for more details.                                                            *
  17 *                                                                              *
  18 * You should have received a copy of the GNU General Public License along with *
  19 * software; if not, write to the Free Software Foundation, Inc., 59 Temple     *
  20 * Place, Suite 330, Boston, MA  02111-1307 USA                                 *
  21 *                                                                              *
  22 * Nirvana Text Editor                                                          *
  23 * March, 2001                                                                  *
  24 *                                                                              *
  25 * Written by Mark Edel                                                         *
  26 *                                                                              *
  27 *******************************************************************************/
  28
  29 #ifdef HAVE_CONFIG_H
  30 #include "../config.h"
  31 #endif
  32
  33 #include "clearcase.h"
  34
  35 #include <string.h>
  36 #include <stdlib.h>
  37
  38 #include <X11/Intrinsic.h>
  39
  40 #ifdef HAVE_DEBUG_H
  41 #include "../debug.h"
  42 #endif
  43
  44 static int ClearCaseViewTagFound = 0;
  45 static char *ClearCaseViewRoot = NULL;
  46 static const char *ClearCaseViewTag = NULL;
  47
  48 const char* GetClearCaseVersionExtendedPath(const char* fullname)
  49 {
  50    return(strstr(fullname, "@@/"));
  51 }
  52
  53
  54 /*
  55 ** Return a string showing the ClearCase view tag.  If ClearCase is not in
  56 ** use, or a view is not set, NULL is returned.
  57 **
  58 ** If user has ClearCase and is in a view, CLEARCASE_ROOT will be set and
  59 ** the view tag can be extracted.  This check is safe and efficient enough
  60 ** that it doesn't impact non-clearcase users, so it is not conditionally
  61 ** compiled. (Thanks to Max Vohlken)
  62 */
  63 const char *GetClearCaseViewTag(void)
  64 {
  65     if (!ClearCaseViewTagFound) {
  66         /* Extract the view name from the CLEARCASE_ROOT environment variable */
  67         const char *envPtr = getenv("CLEARCASE_ROOT");
  68         if (envPtr != NULL) {
  69             const char *tagPtr;
  70             ClearCaseViewRoot = XtMalloc(strlen(envPtr) + 1);
  71             strcpy(ClearCaseViewRoot, envPtr);
  72
  73             tagPtr = strrchr(ClearCaseViewRoot, '/');
  74             if (tagPtr != NULL) {
  75                 ClearCaseViewTag = ++tagPtr;
  76             }
  77         }
  78     }
  79     /* If we don't find it first time, we will never find it, so may just as
  80      * well say that we have found it.
  81      */
  82     ClearCaseViewTagFound = 1;
  83
  84     return(ClearCaseViewTag);
  85 }