util/clearcase.c

   1 static const char CVSID[] = "$Id: clearcase.c,v 1.1 2001/11/18 19:02:58 arnef 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 #include <string.h>
  29 #include <stdlib.h>
  30 #include <X11/Intrinsic.h>
  31 #include "utils.h"
  32 #include "clearcase.h"
  33
  34
  35 static int ClearCaseViewTagFound = 0;
  36 static char *ClearCaseViewRoot = NULL;
  37 static const char *ClearCaseViewTag = NULL;
  38
  39 const char* GetClearCaseVersionExtendedPath(const char* fullname)
  40 {
  41    return(strstr(fullname, "@@/"));
  42 }
  43
  44
  45 /*
  46 ** Return a string showing the ClearCase view tag.  If ClearCase is not in
  47 ** use, or a view is not set, NULL is returned.
  48 **
  49 ** If user has ClearCase and is in a view, CLEARCASE_ROOT will be set and
  50 ** the view tag can be extracted.  This check is safe and efficient enough
  51 ** that it doesn't impact non-clearcase users, so it is not conditionally
  52 ** compiled. (Thanks to Max Vohlken)
  53 */
  54 const char *GetClearCaseViewTag(void)
  55 {
  56     if (!ClearCaseViewTagFound) {
  57         /* Extract the view name from the CLEARCASE_ROOT environment variable */
  58         const char *envPtr = getenv("CLEARCASE_ROOT");
  59         if (envPtr != NULL) {
  60             const char *tagPtr;
  61             ClearCaseViewRoot = XtMalloc(strlen(envPtr) + 1);
  62             strcpy(ClearCaseViewRoot, envPtr);
  63
  64             tagPtr = strrchr(ClearCaseViewRoot, '/');
  65             if (tagPtr != NULL) {
  66                 ClearCaseViewTag = ++tagPtr;
  67             }
  68         }
  69     }
  70     /* If we don't find it first time, we will never find it, so may just as
  71      * well say that we have found it.
  72      */
  73     ClearCaseViewTagFound = 1;
  74
  75     return(ClearCaseViewTag);
  76 }