util/clearcase.c

   1 static const char CVSID[] = "$Id: clearcase.c,v 1.6 2004/11/09 21:58:45 yooden 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. In addition, you may distribute versions of this program linked to  *
  12 * Motif or Open Motif. See README for details.                                 *
  13 *                                                                              *
  14 * This software is distributed in the hope that it will be useful, but WITHOUT *
  15 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or        *
  16 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for    *
  17 * more details.                                                                *
  18 *                                                                              *
  19 * You should have received a copy of the GNU General Public License along with *
  20 * software; if not, write to the Free Software Foundation, Inc., 59 Temple     *
  21 * Place, Suite 330, Boston, MA  02111-1307 USA                                 *
  22 *                                                                              *
  23 * Nirvana Text Editor                                                          *
  24 * March, 2001                                                                  *
  25 *                                                                              *
  26 * Written by Mark Edel                                                         *
  27 *                                                                              *
  28 *******************************************************************************/
  29
  30 #ifdef HAVE_CONFIG_H
  31 #include "../config.h"
  32 #endif
  33
  34 #include "clearcase.h"
  35
  36 #include <string.h>
  37 #include <stdlib.h>
  38
  39 #include <X11/Intrinsic.h>
  40
  41 #ifdef HAVE_DEBUG_H
  42 #include "../debug.h"
  43 #endif
  44
  45 static int ClearCaseViewTagFound = 0;
  46 static char *ClearCaseViewRoot = NULL;
  47 static const char *ClearCaseViewTag = NULL;
  48
  49 const char* GetClearCaseVersionExtendedPath(const char* fullname)
  50 {
  51    return(strstr(fullname, "@@/"));
  52 }
  53
  54
  55 /*
  56 ** Return a string showing the ClearCase view tag.  If ClearCase is not in
  57 ** use, or a view is not set, NULL is returned.
  58 **
  59 ** If user has ClearCase and is in a view, CLEARCASE_ROOT will be set and
  60 ** the view tag can be extracted.  This check is safe and efficient enough
  61 ** that it doesn't impact non-clearcase users, so it is not conditionally
  62 ** compiled. (Thanks to Max Vohlken)
  63 */
  64 const char *GetClearCaseViewTag(void)
  65 {
  66     if (!ClearCaseViewTagFound) {
  67         /* Extract the view name from the CLEARCASE_ROOT environment variable */
  68         const char *envPtr = getenv("CLEARCASE_ROOT");
  69         if (envPtr != NULL) {
  70             const char *tagPtr;
  71             ClearCaseViewRoot = XtMalloc(strlen(envPtr) + 1);
  72             strcpy(ClearCaseViewRoot, envPtr);
  73
  74             tagPtr = strrchr(ClearCaseViewRoot, '/');
  75             if (tagPtr != NULL) {
  76                 ClearCaseViewTag = ++tagPtr;
  77             }
  78         }
  79     }
  80     /* If we don't find it first time, we will never find it, so may just as
  81      * well say that we have found it.
  82      */
  83     ClearCaseViewTagFound = 1;
  84
  85     return(ClearCaseViewTag);
  86 }