From ce050716c2e4f1dd56fbd3fa3290bfe258ea1af6 Mon Sep 17 00:00:00 2001
From: Aqua-sama <aqua@iserlohn-fortress.net>
Date: Sat, 27 Jan 2018 13:44:22 +0100
Subject: Passing unknown command line parameters to the Configuration

- no longer compiling CookiesForm that we don't use
---
 src/main.cpp | 38 ++++++++++++++++++++++++++++++++++++--
 1 file changed, 36 insertions(+), 2 deletions(-)

(limited to 'src/main.cpp')

diff --git a/src/main.cpp b/src/main.cpp
index 70f22be..973ac58 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -10,7 +10,6 @@
 #include "src/mainwindow/mainwindow.h"
 #include "version.h"
 #include <QCommandLineParser>
-#include <QDir>
 #include <QStandardPaths>
 #include <iostream>
 
@@ -66,7 +65,9 @@ int main(int argc, char **argv)
 
     parser.addPositionalArgument("URL", "URL(s) to open");
 
-    parser.process(instance);
+    // use parse instead of process
+    // process calls exit() on unknown options
+    parser.parse(instance.arguments());
 
 #ifdef QT_DEBUG
     qDebug("config=%s", qUtf8Printable(parser.value(configOption)));
@@ -83,6 +84,7 @@ int main(int argc, char **argv)
             qUtf8Printable(parser.value(defaultConfigOption)),
             config->read(parser.value(defaultConfigOption)) ? "ok" : "failed");
     }
+
     // then load in the user configuration, which will overwrite it
     if(parser.isSet(configOption)) {
         qDebug("Reading configuration [%s]: %s",
@@ -90,6 +92,38 @@ int main(int argc, char **argv)
             config->read(parser.value(configOption)) ? "ok" : "failed");
     }
 
+    // parse command-line overrides
+    // we assume the users knows what they're doing, so we only pass the unknown options to program_options
+    // passing any unknown options though will cause it to fail, so we need to filter out the regular options
+    // unfortunately, QCommandLineParser will only give us the unknown option
+    // names, so we need to build a list, add them as options, reparse, and then
+    // we get their values
+    if(!parser.unknownOptionNames().isEmpty()) {
+        int _argc = parser.unknownOptionNames().length() + 1;
+        const char* _argv[_argc];
+
+        // program_options requires 0 to be the program name, otherwise it seems to fail
+        _argv[0] = qUtf8Printable(instance.arguments().at(0));
+
+        // create a list of unknown QCommandLineOption's
+        // parser.addOptions() takes a list, so this is a QList
+        QList<QCommandLineOption> opts;
+        for (const QString &opt : parser.unknownOptionNames()) {
+            QCommandLineOption o(opt, "dummy desc", "dummy value");
+            opts.append(o);
+        }
+
+        // add list and reparse to set the new options
+        parser.addOptions(opts);
+        parser.parse(instance.arguments());
+
+        for(int i = 1; i < _argc; ++i) {
+            _argv[i] = qUtf8Printable(QString("--%1=%2").arg(opts[i-1].names().at(0), parser.value(opts[i-1])));
+        }
+
+        qDebug("Parsing command-line overrides: %s", config->parse(_argc, _argv) ? "ok" : "failed");
+    }
+
     // check for other instances
     // if we socket hasn't been disabled (socket is not none)
     if(parser.value(socketOption) != "none") {
-- 
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