[PATCH 05/14] vsh: Introduce '--completers-missing' for 'self-test' command

[Peter Krempa <pkrempa@xxxxxxxxxx>]

Make it simple to spot which options of which commands are missing
autocompletion functions by introducing this hidden option.

In the future when we'll have completers for everything this can be also
used as a hard fail so that completers are always added.

Signed-off-by: Peter Krempa <pkrempa@xxxxxxxxxx>
---
 tools/vsh.c | 28 ++++++++++++++++++++++++----
 tools/vsh.h |  3 ++-
 2 files changed, 26 insertions(+), 5 deletions(-)

diff --git a/tools/vsh.c b/tools/vsh.c
index 05da50eace..9c6783dad1 100644
--- a/tools/vsh.c
+++ b/tools/vsh.c
@@ -261,11 +261,13 @@ vshCmddefGetInfo(const vshCmdDef * cmd, const char *name)
 /* Check if the internal command definitions are correct */
 static int
 vshCmddefCheckInternals(vshControl *ctl,
-                        const vshCmdDef *cmd)
+                        const vshCmdDef *cmd,
+                        bool missingCompleters)
 {
     size_t i;
     const char *help = NULL;
     bool seenOptionalOption = false;
+    g_auto(virBuffer) complbuf = VIR_BUFFER_INITIALIZER;

     /* in order to perform the validation resolve the alias first */
     if (cmd->flags & VSH_CMD_FLAG_ALIAS) {
@@ -309,6 +311,11 @@ vshCmddefCheckInternals(vshControl *ctl,
             return -1; /* too many options */
         }

+        if (missingCompleters &&
+            (opt->type == VSH_OT_STRING || opt->type == VSH_OT_DATA) &&
+            !opt->completer)
+            virBufferStrcat(&complbuf, opt->name, ", ", NULL);
+
         switch (opt->type) {
         case VSH_OT_STRING:
         case VSH_OT_BOOL:
@@ -391,6 +398,12 @@ vshCmddefCheckInternals(vshControl *ctl,
             break;
         }
     }
+
+    virBufferTrim(&complbuf, ", ");
+
+    if (missingCompleters && virBufferUse(&complbuf) > 0)
+        vshPrintExtra(ctl, "%s: %s\n", cmd->name, virBufferCurrentContent(&complbuf));
+
     return 0;
 }

@@ -3250,6 +3263,13 @@ cmdQuit(vshControl *ctl, const vshCmd *cmd G_GNUC_UNUSED)
  * Command self-test
  * ----------------- */

+const vshCmdOptDef opts_selftest[] = {
+    {.name = "completers-missing",
+     .type = VSH_OT_BOOL,
+     .help = N_("output the list of options which are missing completers")
+    },
+    {.name = NULL}
+};
 const vshCmdInfo info_selftest[] = {
     {.name = "help",
      .data = N_("internal command for testing virt shells")
@@ -3261,15 +3281,15 @@ const vshCmdInfo info_selftest[] = {
 };

 bool
-cmdSelfTest(vshControl *ctl,
-            const vshCmd *cmd G_GNUC_UNUSED)
+cmdSelfTest(vshControl *ctl, const vshCmd *cmd)
 {
     const vshCmdGrp *grp;
     const vshCmdDef *def;
+    bool completers = vshCommandOptBool(cmd, "completers-missing");

     for (grp = cmdGroups; grp->name; grp++) {
         for (def = grp->commands; def->name; def++) {
-            if (vshCmddefCheckInternals(ctl, def) < 0)
+            if (vshCmddefCheckInternals(ctl, def, completers) < 0)
                 return false;
         }
     }
diff --git a/tools/vsh.h b/tools/vsh.h
index ae50f6b220..e208d957bb 100644
--- a/tools/vsh.h
+++ b/tools/vsh.h
@@ -375,6 +375,7 @@ extern const vshCmdOptDef opts_echo[];
 extern const vshCmdInfo info_echo[];
 extern const vshCmdInfo info_pwd[];
 extern const vshCmdInfo info_quit[];
+extern const vshCmdOptDef opts_selftest[];
 extern const vshCmdInfo info_selftest[];
 extern const vshCmdOptDef opts_complete[];
 extern const vshCmdInfo info_complete[];
@@ -445,7 +446,7 @@ bool cmdComplete(vshControl *ctl, const vshCmd *cmd);
     { \
         .name = "self-test", \
         .handler = cmdSelfTest, \
-        .opts = NULL, \
+        .opts = opts_selftest, \
         .info = info_selftest, \
         .flags = VSH_CMD_FLAG_NOCONNECT | VSH_CMD_FLAG_HIDDEN, \
     }
-- 
2.31.1