util/motif.c

   1 /*******************************************************************************
   2 *                                                                              *
   3 * motif.c:  Determine stability of Motif                                       *
   4 *                                                                              *
   5 * Copyright (C) 2003 Nathaniel Gray                                            *
   6 *                                                                              *
   7 * This is free software; you can redistribute it and/or modify it under the    *
   8 * terms of the GNU General Public License as published by the Free Software    *
   9 * Foundation; either version 2 of the License, or (at your option) any later   *
  10 * version. In addition, you may distribute versions of this program linked to  *
  11 * Motif or Open Motif. See README for details.                                 *
  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 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 * July 28, 1992                                                                *
  24 *                                                                              *
  25 * Written by Nathaniel Gray                                                    *
  26 *                                                                              *
  27 * Modifications by:                                                            *
  28 * Scott Tringali                                                               *
  29 *                                                                              *
  30 *******************************************************************************/
  31
  32 /*
  33  * About the different #defines that Motif gives us:
  34  * All Motifs #define several values.  These are the values in
  35  * Open Motif 2.1.30, for example:
  36  *     #define XmVERSION       2
  37  *     #define XmREVISION      1
  38  *     #define XmUPDATE_LEVEL  30
  39  *     #define XmVersion       (XmVERSION * 1000 + XmREVISION)
  40  *     #define XmVERSION_STRING "@(#)Motif Version 2.1.30"
  41  *
  42  * In addition, LessTif #defines several values as shown here for
  43  * version 0.93.0:
  44  *     #define LESSTIF_VERSION  0
  45  *     #define LESSTIF_REVISION 93
  46  *     #define LesstifVersion   (LESSTIF_VERSION * 1000 + LESSTIF_REVISION)
  47  *     #define LesstifVERSION_STRING \
  48  *             "@(#)GNU/LessTif Version 2.1 Release 0.93.0"
  49  *
  50  * Also, in LessTif the XmVERSION_STRING is identical to the
  51  * LesstifVERSION_STRING.  Unfortunately, the only way to find out the
  52  * "update level" of a LessTif release is to parse the LesstifVERSION_STRING.
  53  */
  54
  55 #include "motif.h"
  56 #include <Xm/Xm.h>
  57 #include <string.h>
  58
  59 #ifdef LESSTIF_VERSION
  60 static enum MotifStability GetLessTifStability(void);
  61 #else
  62 static enum MotifStability GetOpenMotifStability(void);
  63 #endif
  64
  65 /*
  66  * These are versions of LessTif that are known to be stable with NEdit in
  67  * Motif 2.1 mode.
  68  */
  69 static const char *const knownGoodLesstif[] = {
  70     "0.92.32",
  71     "0.93.0",
  72     "0.93.12",
  73     "0.93.18",
  74     "0.93.94",
  75     NULL
  76 };
  77
  78 /*
  79  * These are versions of LessTif that are known NOT to be stable with NEdit in
  80  * Motif 2.1 mode.
  81  */
  82 const char *const knownBadLessTif[] = {
  83     "0.93.25",
  84     "0.93.29",
  85     "0.93.34"
  86     "0.93.36",
  87     "0.93.39",
  88     "0.93.40",
  89     "0.93.41",
  90     "0.93.44",
  91     "0.93.95b",   /* SF bug 1087192 */
  92     "0.94.4",     /* Alt-H, ESC => crash */
  93     NULL
  94 };
  95
  96
  97 #ifdef LESSTIF_VERSION
  98
  99 static enum MotifStability GetLessTifStability(void)
 100 {
 101     int i;
 102     const char *rev = NULL;
 103
 104     /* We assume that the lesstif version is the string after the last
 105         space. */
 106
 107     rev = strrchr(LesstifVERSION_STRING, ' ');
 108
 109     if (rev == NULL)
 110         return MotifUnknown;
 111
 112     rev += 1;
 113
 114     /* Check for known good LessTif versions */
 115     for (i = 0; knownGoodLesstif[i]; i++)
 116         if (!strcmp(rev, knownGoodLesstif[i]))
 117             return MotifKnownGood;
 118
 119     /* Check for known bad LessTif versions */
 120     for (i = 0; knownBadLessTif[i]; i++)
 121         if (!strcmp(rev, knownBadLessTif[i]))
 122             return MotifKnownBad;
 123
 124     return MotifUnknown;
 125 }
 126
 127 #else
 128
 129 /* The stability depends on the patch level, so fold it into the
 130    usual XmVersion for easy comparison. */
 131 static const int XmFullVersion = (XmVersion * 100 + XmUPDATE_LEVEL);
 132
 133 static enum MotifStability GetOpenMotifStability(void)
 134 {
 135     enum MotifStability result = MotifUnknown;
 136
 137     const Boolean really222 =
 138         (strcmp("@(#)Motif Version 2.2.2", XmVERSION_STRING) == 0);
 139
 140     if (XmFullVersion <= 200200)         /* 1.0 - 2.1 are fine */
 141     {
 142         result = MotifKnownGood;
 143     }
 144     else if ((XmFullVersion < 200202) || really222)  /* 2.2.0 - 2.2.2 are bad */
 145     {
 146         result = MotifKnownBad;
 147     }
 148     else if (XmFullVersion == 200203)       /* 2.2.3 is good */
 149     {
 150         result = MotifKnownGood;
 151     }
 152     else                            /* Anything else unknown */
 153     {
 154         result = MotifUnknown;
 155     }
 156
 157     return result;
 158 }
 159
 160 #endif
 161
 162
 163 enum MotifStability GetMotifStability(void)
 164 {
 165 #ifdef LESSTIF_VERSION
 166     return GetLessTifStability();
 167 #else
 168     return GetOpenMotifStability();
 169 #endif
 170 }
 171
 172
 173 const char *GetMotifStableVersions(void)
 174 {
 175     int i;
 176     static char msg[sizeof knownGoodLesstif * 80];
 177
 178     for (i = 0; knownGoodLesstif[i] != NULL; i++)
 179     {
 180         strcat(msg, knownGoodLesstif[i]);
 181         strcat(msg, "\n");
 182     }
 183
 184     strcat(msg, "OpenMotif 2.1.30\n");
 185     strcat(msg, "OpenMotif 2.2.3\n");
 186
 187     return msg;
 188 }