From 1d6f9d4cf1e8bfa5fb594a2a832b593dd935e80f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Kristian=20Set=C3=A4l=C3=A4?= <kristian.setala@gmail.com>
Date: Sat, 2 Jan 2010 23:02:57 +0200
Subject: [PATCH] The wrapper program

---
 wrapper.cpp | 153 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 153 insertions(+)
 create mode 100644 wrapper.cpp

diff --git a/wrapper.cpp b/wrapper.cpp
new file mode 100644
index 0000000..ec83642
--- /dev/null
+++ b/wrapper.cpp
@@ -0,0 +1,153 @@
+// wrapper.cpp
+// A small wrapper program around Jay Bromley's keyboard layout information class.
+//
+// Compilation:
+//   g++ -o xkblayout-state XKeyboard.cpp wrapper.cpp -lX11
+//
+// This program is free software; you can redistribute it and/or modify it
+// under the terms of the GNU General Public License as published by the Free
+// Software Foundation; either version 2 of the License, or (at your option)
+// any later version.
+
+#include <iostream>
+#include <string>
+#include <cstdlib>
+#include "XKeyboard.h"
+
+using namespace std;
+
+void print_usage(string progname)
+{
+    cerr << endl
+         << "xkblayout-state v1" << endl
+         << endl
+         << "Usage: " << endl
+         << endl
+         << "To get the current layout(s):" << endl
+         << "  " << progname << " -p format" << endl
+         << endl
+         << "This causes the 'format' string to be printed on stdout with the following substitutions:" << endl
+         << "  %c -> current layout number" << endl
+         << "  %n -> current layout name" << endl
+         << "  %s -> current layout symbol" << endl
+         << "  %v -> current layout variant" << endl
+         << "  %e -> current layout variant (equals to %s if %v is empty)" << endl
+         << "  %C -> layout count" << endl
+         << "  %N -> layout names (one per line)" << endl
+         << "  %S -> layout symbols (one per line)" << endl
+         << "  %V -> layout variants (one per line)" << endl
+         << "  %E -> layout variants (one per line; layout symbol is used if variant is empty)" << endl
+         << "  %% -> A literal '%'" << endl
+         << endl
+         << "For example:" << endl
+         << "  " << progname << " -p \"Current layout: %s(%e)\"" << endl
+         << endl
+         << "To set the current layout:" << endl
+         << "  " << progname << " -s layout_number" << endl
+         << endl
+         << "Here 'layout_number' is the number of the layout to be set (starting from 0)" << endl
+         << "and can be either absolute (default) or relative (if preceded with a plus or minus sign)." << endl
+         << endl
+         << "For example:" << endl
+         << "  " << progname << " -s 1" << endl
+         << "  " << progname << " -s +1" << endl
+         << endl;
+}
+
+void print_status(XKeyboard& xkb, string format) {
+    for (size_t i = 0; i < format.length(); ++i) {
+        if (format[i] == '%' && i < format.length()-1) {
+            switch (format[i+1]) {
+                case 'c':
+                    cout << xkb.currentGroupNum();
+                    break;
+                case 'n':
+                    cout << xkb.currentGroupName();
+                    break;
+                case 's':
+                    cout << xkb.currentGroupSymbol();
+                    break;
+                case 'v':
+                    cout << xkb.currentGroupVariant();
+                    break;
+                case 'e':
+                    if (xkb.currentGroupVariant().empty())
+                        cout << xkb.currentGroupSymbol();
+                    else
+                        cout << xkb.currentGroupVariant();
+                    break;
+
+                case 'C':
+                    cout << xkb.groupCount();
+                    break;
+                case 'N':
+                    for (size_t j = 0; j < xkb.groupNames().size(); ++j)
+                        cout << xkb.groupNames()[j] << endl;
+                    break;
+                case 'S':
+                    for (size_t j = 0; j < xkb.groupSymbols().size(); ++j)
+                        cout << xkb.groupSymbols()[j] << endl;
+                    break;
+                case 'V':
+                    for (size_t j = 0; j < xkb.groupVariants().size(); ++j)
+                        cout << xkb.groupVariants()[j] << endl;
+                    break;
+                case 'E':
+                    for (size_t j = 0; j < xkb.groupVariants().size(); ++j)
+                        if (xkb.groupVariants()[j].empty())
+                            cout << xkb.groupSymbols()[j] << endl;
+                        else
+                            cout << xkb.groupVariants()[j] << endl;
+                    break;
+
+                default:
+                    cout << format[i+1];
+                    break;
+            }
+            ++i;
+        } else { // not '%'
+            cout << format[i];
+        }
+    }
+}
+
+bool set_group(XKeyboard& xkb, string group) {
+    bool relative = (group[0] == '+' || group[0] == '-');
+    int group_int = atoi(group.c_str());
+    if (relative)
+        return xkb.changeGroup(group_int);
+    else
+        return xkb.setGroupByNum(group_int);
+}
+
+
+int main(int argc, char* argv[])
+{
+    try {
+        XKeyboard xkb;
+
+        if (argc != 3) {
+            print_usage(string(argv[0]));
+            return EXIT_FAILURE;
+        } else {
+            string command(argv[1]);
+            if (command == "-p") {
+                print_status(xkb, string(argv[2]));
+                return EXIT_SUCCESS;
+            } else if (command == "-s") {
+                if (!set_group(xkb, string(argv[2]))) {
+                    cerr << "Failed to set layout" << endl;
+                    return EXIT_FAILURE;
+                }
+            } else {
+                print_usage(string(argv[0]));
+                return EXIT_FAILURE;
+            }
+        }
+    }
+    catch (exception e) {
+        cerr << e.what() << endl;
+        return EXIT_FAILURE;
+    }
+}
+