From 05a2f36cfa6550a457c3a9e358b088077fe4c8da Mon Sep 17 00:00:00 2001
From: Stijn Buys <ingar@osirion.org>
Date: Sat, 19 Jan 2013 21:43:12 +0000
Subject: Added IniStream::got_key_vector3f_opt() to read vectors with optional
 coordinates.

---
 src/filesystem/inistream.cc | 30 ++++++++++++++++++++++++++++--
 src/filesystem/inistream.h  |  5 +++++
 2 files changed, 33 insertions(+), 2 deletions(-)

(limited to 'src/filesystem')

diff --git a/src/filesystem/inistream.cc b/src/filesystem/inistream.cc
index 54400d0..15c8ee0 100644
--- a/src/filesystem/inistream.cc
+++ b/src/filesystem/inistream.cc
@@ -144,9 +144,9 @@ bool IniStream::got_key_vector3f(const char * keylabel, math::Vector3f & v)
 		std::istringstream is(value_current);
 		float x, y, z;
 		if ((is >> x) && (is >> y) && (is >> z)) {
-			v = math::Vector3f(x, y, z);
+			v.assign(x, y, z);
 		} else {
-			v = math::Vector3f();
+			v.clear();
 		}
 		return true;
 	} else {
@@ -154,6 +154,32 @@ bool IniStream::got_key_vector3f(const char * keylabel, math::Vector3f & v)
 	}
 }
 
+bool IniStream::got_key_vector3f_opt(const char * keylabel, math::Vector3f & v)
+{
+	if (last_read_was_key && (key_current.compare(keylabel) == 0)) {
+		std::istringstream is(value_current);
+		float x, y, z;
+		if (is >> x) {
+			if (is >> y) {
+				if (!(is >> z)) {
+					z = y;
+					y = ( x + z ) * 0.5f;
+				}			
+			} else {
+				y = x;
+				z = x;
+			}
+			v.assign(x, y, z);
+		} else {
+			v.clear();
+		}
+		
+		return true;
+	} else {
+		return false;
+	}
+}
+
 bool IniStream::got_key_float(const char * keylabel, float & f)
 {
 	if (last_read_was_key && (key_current.compare(keylabel) == 0)) {
diff --git a/src/filesystem/inistream.h b/src/filesystem/inistream.h
index b4466fd..8788719 100644
--- a/src/filesystem/inistream.h
+++ b/src/filesystem/inistream.h
@@ -81,6 +81,11 @@ public:
 	bool got_key_long(const char * keylabel, long & l);
 
 	bool got_key_vector3f(const char * keylabel, math::Vector3f & v);
+	
+	/**
+	 * @brief special version that reads 1,2 or 3 arguments
+	 **/ 
+	bool got_key_vector3f_opt(const char * keylabel, math::Vector3f & v);
 
 	bool got_key_bool(const char * keylabel, bool & b);
 
-- 
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