vsh: Always assume that command groups are used

None of the clients use the 'command set' approach and other pieces of
code such as the command validator already assume that command groups
are in use. Remove the unused 'command set' stuff.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>

tools/virsh.c

@@ -878,7 +878,7 @@ main(int argc, char **argv)
 
     virFileActivateDirOverrideForProg(argv[0]);
 
-    if (!vshInit(ctl, cmdGroups, NULL))
+    if (!vshInit(ctl, cmdGroups))
         exit(EXIT_FAILURE);
 
     if (!virshParseArgv(ctl, argc, argv) ||

tools/virt-admin.c

@@ -1594,7 +1594,7 @@ main(int argc, char **argv)
 
     virFileActivateDirOverrideForProg(argv[0]);
 
-    if (!vshInit(ctl, cmdGroups, NULL))
+    if (!vshInit(ctl, cmdGroups))
         exit(EXIT_FAILURE);
 
     if (!vshAdmParseArgv(ctl, argc, argv) ||

tools/vsh.c

@@ -56,7 +56,6 @@ vshControl *autoCompleteOpaque;
  * and only relies on static data accessible from the user-side callback
  */
 const vshCmdGrp *cmdGroups;
-const vshCmdDef *cmdSet;
 
 
 double
@@ -572,8 +571,8 @@ vshCommandCheckOpts(vshControl *ctl, const vshCmd *cmd, uint64_t opts_required,
     return -1;
 }
 
-static const vshCmdDef *
-vshCmdDefSearchGrp(const char *cmdname)
+const vshCmdDef *
+vshCmddefSearch(const char *cmdname)
 {
     const vshCmdGrp *g;
     const vshCmdDef *c;
@@ -588,28 +587,6 @@ vshCmdDefSearchGrp(const char *cmdname)
     return NULL;
 }
 
-static const vshCmdDef *
-vshCmdDefSearchSet(const char *cmdname)
-{
-    const vshCmdDef *s;
-
-    for (s = cmdSet; s->name; s++) {
-        if (STREQ(s->name, cmdname))
-            return s;
-        }
-
-    return NULL;
-}
-
-const vshCmdDef *
-vshCmddefSearch(const char *cmdname)
-{
-    if (cmdGroups)
-        return vshCmdDefSearchGrp(cmdname);
-    else
-        return vshCmdDefSearchSet(cmdname);
-}
-
 const vshCmdGrp *
 vshCmdGrpSearch(const char *grpname)
 {
@@ -1425,7 +1402,11 @@ vshCommandParse(vshControl *ctl, vshCommandParser *parser, vshCmd **partial)
                 if (cmd->flags & VSH_CMD_FLAG_ALIAS) {
                     VIR_FREE(tkdata);
                     tkdata = g_strdup(cmd->alias);
-                    cmd = vshCmddefSearch(tkdata);
+                    if (!(cmd = vshCmddefSearch(tkdata))) {
+                        /* self-test ensures that the alias exists */
+                        vshError(ctl, _("unknown command: '%1$s'"), tkdata);
+                        goto syntaxError;
+                    }
                 }
 
                 vshCmddefOptParse(cmd, &opts_need_arg, &opts_required);
@@ -1550,7 +1531,10 @@ vshCommandParse(vshControl *ctl, vshCommandParser *parser, vshCmd **partial)
                 if (STRNEQ(tmpopt->def->name, "help"))
                     continue;
 
-                help = vshCmddefSearch("help");
+                /* the self-test code ensures that help exists */
+                if (!(help = vshCmddefSearch("help")))
+                    break;
+
                 vshCommandOptFree(first);
                 first = g_new0(vshCmdOpt, 1);
                 first->def = help->opts;
@@ -3041,20 +3025,19 @@ vshInitDebug(vshControl *ctl)
  * Initialize global data
  */
 bool
-vshInit(vshControl *ctl, const vshCmdGrp *groups, const vshCmdDef *set)
+vshInit(vshControl *ctl, const vshCmdGrp *groups)
 {
     if (!ctl->hooks) {
         vshError(ctl, "%s", _("client hooks cannot be NULL"));
         return false;
     }
 
-    if (!groups && !set) {
-        vshError(ctl, "%s", _("command groups and command set cannot both be NULL"));
+    if (!groups) {
+        vshError(ctl, "%s", _("command groups must be non-NULL"));
         return false;
     }
 
     cmdGroups = groups;
-    cmdSet = set;
 
     if (vshInitDebug(ctl) < 0 ||
         (ctl->imode && vshReadlineInit(ctl) < 0))
@@ -3066,8 +3049,8 @@ vshInit(vshControl *ctl, const vshCmdGrp *groups, const vshCmdDef *set)
 bool
 vshInitReload(vshControl *ctl)
 {
-    if (!cmdGroups && !cmdSet) {
-        vshError(ctl, "%s", _("command groups and command are both NULL run vshInit before reloading"));
+    if (!cmdGroups) {
+        vshError(ctl, "%s", _("command groups is NULL run vshInit before reloading"));
         return false;
     }
 
@@ -3156,6 +3139,9 @@ cmdHelp(vshControl *ctl, const vshCmd *cmd)
     if ((def = vshCmddefSearch(name))) {
         if (def->flags & VSH_CMD_FLAG_ALIAS)
             def = vshCmddefSearch(def->alias);
+    }
+
+    if (def) {
         return vshCmddefHelp(def);
     } else if ((grp = vshCmdGrpSearch(name))) {
         return vshCmdGrpHelp(ctl, grp);

tools/vsh.h

@@ -310,7 +310,7 @@ void vshPrint(vshControl *ctl, const char *format, ...)
     G_GNUC_PRINTF(2, 3);
 void vshPrintExtra(vshControl *ctl, const char *format, ...)
     G_GNUC_PRINTF(2, 3);
-bool vshInit(vshControl *ctl, const vshCmdGrp *groups, const vshCmdDef *set);
+bool vshInit(vshControl *ctl, const vshCmdGrp *groups);
 bool vshInitReload(vshControl *ctl);
 void vshDeinit(vshControl *ctl);
 void vshDebug(vshControl *ctl, int level, const char *format, ...)