CmdConfig: Added command handling

src/commands/CmdConfig.cpp

@@ -25,9 +25,51 @@
 ////////////////////////////////////////////////////////////////////////////////
 
 #include <cmake.h>
+#include <shared.h>
+#include <format.h>
 #include <timew.h>
+#include <stack>
 #include <iostream>
 
+////////////////////////////////////////////////////////////////////////////////
+static bool setConfigVariable (std::string name, std::string value, bool confirmation /* = false */)
+{
+  bool change = false;
+
+  return change;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+static int unsetConfigVariable (std::string name, bool confirmation /* = false */)
+{
+    return 0;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// a.b.c.d = 1
+// a.b.d = 2
+// a.b.e = 3
+// b.d.e = 4
+// f = 5
+//
+// define a:
+//   b:
+//     c:
+//       d = 1
+//     d = 2
+//     e = 3
+//
+// define b:
+//   d:
+//     e = 4
+//
+// f = 5
+static void showAllSettings (const Rules& rules)
+{
+  for (auto& name : rules.all ())
+    std::cout << name << " = " << rules.get (name) << "\n";
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 int CmdConfig (
   const CLI& cli,
@@ -41,6 +83,67 @@ int CmdConfig (
 
   int rc = 0;
 
+  // Get the command line args that are not binary, ext or command.
+  auto words = cli.getWords ();
+
+  // Support:
+  //   task config name value    # set name to value
+  //   task config name ""       # set name to blank
+  //   task config name          # remove name
+  if (words.size ())
+  {
+    bool confirmation = rules.getBoolean ("confirmation");
+    std::string name = words[0];
+    std::string value = "";
+
+    // Join the remaining words into config variable's value
+    if (words.size () > 1)
+    {
+      for (unsigned int i = 1; i < words.size (); ++i)
+      {
+        if (i > 1)
+          value += " ";
+
+        value += words[i];
+      }
+    }
+
+    if (name != "")
+    {
+      bool change = false;
+
+      // task config name value
+      // task config name ""
+      if (words.size () > 1)
+        change = setConfigVariable(name, value, confirmation);
+
+      // task config name
+      else
+      {
+        bool found = false;
+        rc = unsetConfigVariable(name, confirmation);
+        if (rc == 0)
+        {
+          change = true;
+          found = true;
+        }
+        else if (rc == 1)
+          found = true;
+
+        if (!found)
+          throw format ("No entry named '{1}' found.", name);
+      }
+
+      if (change)
+        std::cout << "Config file " << rules.file () << " modified.\n";
+      else
+        std::cout << "No changes made.\n";
+    }
+    else
+      showAllSettings (rules);
+  }
+  else
+    showAllSettings (rules);
 
   return rc;
 }