From f92b5a516eddbdf33a69e95da6678eb9c9ef8c8c Mon Sep 17 00:00:00 2001
From: Bent Bisballe Nyeng <deva@aasimon.org>
Date: Tue, 4 Jun 2019 13:31:28 +0200
Subject: Add support for printing automatically generated help texts.

---
 example.cpp | 81 +++++++++++++++++++++++++++++++++++++------------------------
 1 file changed, 49 insertions(+), 32 deletions(-)

(limited to 'example.cpp')

diff --git a/example.cpp b/example.cpp
index e273c2f..bd94585 100644
--- a/example.cpp
+++ b/example.cpp
@@ -6,38 +6,55 @@ int main(int argc, char* argv[]) {
 	int verbose_flag;
 
 	dg::Options opt;
-	opt.add("verbose", no_argument, &verbose_flag, 1, [&]() {
-		std::cout << "verbose: " << verbose_flag << "\n";
-		return 0;
-	});
-	opt.add("brief", no_argument, &verbose_flag, 0, [&]() {
-		std::cout << "brief: " << verbose_flag << "\n";
-		return 0;
-	});
-	opt.add("add", no_argument, 'a', [&]() {
-		std::cout << "add\n";
-		return 0;
-	});
-	opt.add("append", no_argument, 'b', [&]() {
-		std::cout << "append\n";
-		return 0;
-	});
-	opt.add("delete", required_argument, 'd', [&]() {
-		std::cout << "delete: " << optarg << "\n";
-		return 0;
-	});
-	opt.add("create", required_argument, 'c', [&]() {
-		std::cout << "create: " << optarg << "\n";
-		return 0;
-	});
-	opt.add("file", required_argument, 'f', [&]() {
-		std::cout << "file: " << optarg << "\n";
-		return 0;
-	});
-	opt.add("help", no_argument, '?', [&]() {
-		std::cout << "usage stuff\n";
-		return 0;
-	});
+	opt.add("verbose", no_argument, &verbose_flag, 1,
+	        "Be verbose.",
+	        [&]() {
+		        std::cout << "verbose: " << verbose_flag << "\n";
+		        return 0;
+	        });
+	opt.add("brief", no_argument, &verbose_flag, 0,
+	        "Be brief.",
+	        [&]() {
+		        std::cout << "brief: " << verbose_flag << "\n";
+		        return 0;
+	        });
+	opt.add("add", no_argument, 'a',
+	        "Add an entry.",
+	        [&]() {
+		        std::cout << "add\n";
+		        return 0;
+	        });
+	opt.add("append", no_argument, 'b',
+	        "Append an entry.",
+	        [&]() {
+		        std::cout << "append\n";
+		        return 0;
+	        });
+	opt.add("delete", optional_argument, 'd',
+	        "Delete an entry.",
+	        [&]() {
+		        std::cout << "delete: " << optarg << "\n";
+		        return 0;
+	        });
+	opt.add("create", required_argument, 'c',
+	        "Create an entry.",
+	        [&]() {
+		        std::cout << "create: " << optarg << "\n";
+		        return 0;
+	        });
+	opt.add("file", required_argument, 'f',
+	        "Some file argument.",
+	        [&]() {
+		        std::cout << "file: " << optarg << "\n";
+		        return 0;
+	        });
+	opt.add("help", no_argument, 'h',
+	        "Print this help text.",
+	        [&]() {
+		        std::cout << "usage stuff\n";
+		        opt.help();
+		        return 0;
+	        });
 
 	opt.process(argc, argv);
 	for(auto const &arg : opt.arguments())
-- 
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