Search the location of the binary for the data/ directory

2 files changed, 17 insertions, 5 deletions

diff --git a/src/filesystem/filesystem.cc b/src/filesystem/filesystem.cc
index 11ece3c..d268ccc 100644
--- a/src/filesystem/filesystem.cc
+++ b/src/filesystem/filesystem.cc
@@ -45,8 +45,7 @@ SearchPath & searchpath()
 {
 	return filesystem_searchpath;
 }
-
-void init(std::string const & basename, std::string const & modname)
+void init(const std::string &binaryname, const std::string & basename, const std::string & modname)
 {
 	con_print << "^BInitializing filesystem..." << std::endl;
 
@@ -95,8 +94,21 @@ void init(std::string const & basename, std::string const & modname)
 		filesystem_homedir += '/';
 	}
 #endif
-	
-	std::string current_datadir("data/");
+
+	// try the data/ subdirectory of the directory where the binary is located
+	std::string current_datadir(binaryname);
+	size_t i = current_datadir.size();
+	while (--i && (current_datadir[i] != '/')) {
+		current_datadir.erase(i, 1);
+	}
+	current_datadir.append("data/");
+
+	// use the data/ subdirectory of the current working directory as a fallback
+	if (!sys::directory_exists(current_datadir)) {
+		current_datadir.assign("data/");
+	}
+
+	// the data dir set by the configure script
 	std::string package_datadir(PACKAGE_DATADIR);
 	std::string dir;
 	
diff --git a/src/filesystem/filesystem.h b/src/filesystem/filesystem.h
index b0232f2..1bdacaa 100644
--- a/src/filesystem/filesystem.h
+++ b/src/filesystem/filesystem.h
@@ -24,7 +24,7 @@ typedef std::list<std::string> SearchPath;
 SearchPath & searchpath();
 
 /// initialize the filesystem subsystem
-void init(std::string const & basename, std::string const & modname);
+void init(const std::string &binaryname, const std::string & basename, const std::string & modname);
 
 /// shutdown the filesystem subsystem
 void shutdown();