Allow to set default options with $BLOBDROP_ARGS

This is the easiest way to implement setting default values without
having to implement an entire config system.

Author: vimpostor

CMakeLists.txt

@@ -25,7 +25,7 @@ if (UNIX AND NOT APPLE)
 endif()
 
 include(FetchContent)
-FetchContent_Declare(quartz GIT_REPOSITORY https://github.com/vimpostor/quartz.git GIT_TAG 9f1ac6cce6b338c6613aa195cffe6f0bb5c965df)
+FetchContent_Declare(quartz GIT_REPOSITORY https://github.com/vimpostor/quartz.git GIT_TAG v0.7)
 FetchContent_MakeAvailable(quartz)
 
 list(APPEND LINK_LIBS ${PKGCONFIG_MODULES})

doc/man/man1/blobdrop.1

@@ -119,6 +119,22 @@ Using this option causes blobdrop to quit after the first drag operation has fin
 .SS "all"
 With this option blobdrop keeps track of which items have been dragged already. It quits when all paths have been dragged at least once.
 
+.SH DEFAULT ARGUMENTS
+The
+.B $BLOBDROP_ARGS
+environment variable can be used to provide default arguments. The default arguments will be prepended to the actually passed arguments, for example:
+.PP
+.in +2n
+.EX
+$ \fBBLOBDROP_ARGS\fP=\fI"\-f gui \-p"\fP \fBblobdrop\fP \-x \fInever\fP image.png
+$ # is equivalent to:
+$ \fBblobdrop\fP \-f \fIgui\fP \-p \-x \fInever\fP image.png
+.EE
+.in
+.PP
+
+This can be useful to change the default value of some options permanently.
+
 .SH EXAMPLES
 Here are some example usecases.
 

flake.nix

@@ -15,7 +15,7 @@
 				owner = "vimpostor";
 				repo = "quartz";
 				rev = builtins.head (builtins.match ".*FetchContent_Declare\\(.*GIT_TAG ([[:alnum:]\\.]+).*" (builtins.readFile ./CMakeLists.txt));
-				hash = "sha256-UacYQ5c+MGUK4saLohnZs4691CBGI59JpkdgCaYbPUk=";
+				hash = "sha256-cANBwVXcnWPaFE58lfbi53DUJ1mAmJL/p1hxoS5cX7s=";
 			};
 			makeStdenvPkg = env: env.mkDerivation {
 				pname = "blobdrop";

src/getopts.cpp

@@ -5,7 +5,12 @@
 
 namespace Getopts {
 
-bool parse(QCoreApplication &app) {
+QStringList setup_args(int argc, char *argv[]) {
+	const auto *env = std::getenv("BLOBDROP_ARGS");
+	return quartz::getopts::prepend_args(argc, argv, env);
+}
+
+bool parse(const QStringList &args) {
 	QCommandLineParser p;
 	p.setApplicationDescription("Quickly drag and drop files from the terminal to applications.");
 	p.addHelpOption();
@@ -49,7 +54,7 @@ bool parse(QCoreApplication &app) {
 		"behaviour");
 
 	p.addOptions({frameless_opt, cursor_opt, frontend_opt, intercept_opt, keep_opt, persistent_opt, remote_opt, ontop_opt, auto_quit_opt});
-	p.process(app);
+	p.process(args);
 
 	if (p.isSet(auto_quit_opt)) {
 		const auto opt = p.value(auto_quit_opt);
@@ -90,5 +95,4 @@ bool parse(QCoreApplication &app) {
 	std::ranges::for_each(p.positionalArguments(), [](auto i) { PathRegistry::get()->add_path(i.toStdString()); });
 	return true;
 }
-
 }

src/getopts.hpp

@@ -2,10 +2,13 @@
 
 #include <QCommandLineParser>
 #include <iostream>
+#include <quartz/getopts.hpp>
 
 #include "path_registry.hpp"
 #include "settings.hpp"
 
 namespace Getopts {
-bool parse(QCoreApplication &app);
+
+QStringList setup_args(int argc, char *argv[]);
+bool parse(const QStringList &args);
 }

src/main.cpp

@@ -24,7 +24,8 @@ int main(int argc, char *argv[]) {
 	quartz::Signals signal_handler {{SIGINT, SIGHUP, SIGTERM, SIGQUIT}, [](int) { Backend::get()->quit_delayed(0ms); }};
 #endif
 
-	if (!Getopts::parse(app)) {
+	const auto &args = Getopts::setup_args(argc, argv);
+	if (!Getopts::parse(args)) {
 		return EXIT_FAILURE;
 	}