From bc1e957bc1d764d2d639b181fc6e666055df4d81 Mon Sep 17 00:00:00 2001
From: Aki <please@ignore.pl>
Date: Sat, 17 Jul 2021 17:40:24 +0200
Subject: Added base address option

---
 markdown.cpp | 25 ++++++++++++++++++++++---
 1 file changed, 22 insertions(+), 3 deletions(-)

diff --git a/markdown.cpp b/markdown.cpp
index fa14396..63f293d 100644
--- a/markdown.cpp
+++ b/markdown.cpp
@@ -1,3 +1,5 @@
+#include <unistd.h>
+
 #include <fstream>
 #include <iostream>
 #include <iterator>
@@ -11,6 +13,7 @@
 #include <imgui_impl_opengl3.h>
 #include <imgui_md.h>
 
+std::string g_base_address;
 ImFont * g_font_regular;
 ImFont * g_font_bold;
 ImFont * g_font_bold_large;
@@ -56,12 +59,28 @@ static void resized(GLFWwindow *, int width, int height)
 
 static void print_usage(const char * program)
 {
-	std::cerr << "Usage: " << program << " FILE" << std::endl;
+	std::cerr << "Usage: " << program << " [-b BASE_ADDRESS] FILE" << std::endl;
 }
 
 int main(int argc, char ** argv)
 {
-	if (2 != argc)
+	int opt;
+
+	while (-1 != (opt = getopt(argc, argv, "b:")))
+	{
+		switch (opt)
+		{
+		case 'b':
+			g_base_address = optarg;
+			break;
+		case '?':
+		default:
+			print_usage(argv[0]);
+			return 2;
+		}
+	}
+
+	if (optind >= argc)
 	{
 		print_usage(argv[0]);
 		return 2;
@@ -100,7 +119,7 @@ int main(int argc, char ** argv)
 	ImGui_ImplOpenGL3_Init(glsl_version);
 
 	std::ifstream in;
-	in.open(argv[1]);
+	in.open(argv[optind]);
 	std::string text(std::istreambuf_iterator<char>(in), {});
 	in.close();
 
-- 
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