From 49710e16bee2308f10b093e8352319f37b1ba293 Mon Sep 17 00:00:00 2001
From: Mirek Kratochvil <exa.exa@gmail.com>
Date: Sun, 13 Jan 2013 12:54:16 +0100
Subject: [PATCH] base64: break lines

---
 src/base64.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/base64.cpp b/src/base64.cpp
index 13c322b..418a2c1 100644
--- a/src/base64.cpp
+++ b/src/base64.cpp
@@ -26,7 +26,7 @@ void base64_encode (const std::string& in, std::string&out, int cols)
 
 	int acc = 0, accbits = 0, idx = 0, idxmax = in.length(), col = 0;
 	out.clear();
-	out.reserve (idxmax + (4 * idxmax / 10) );
+	out.reserve (idxmax + (2 * idxmax / 5) ); //reserve around 140%
 	while (idx < idxmax) {
 		if (accbits < 6) {
 			acc = (acc << 8) | in[idx++];
@@ -35,6 +35,11 @@ void base64_encode (const std::string& in, std::string&out, int cols)
 		while (accbits >= 6) {
 			accbits -= 6;
 			out.push_back (b64str[ (acc >> accbits) & 0x3f]);
+
+			if (cols && ( (++col) >= cols) ) {
+				out.push_back ('\n');
+				col = 0;
+			}
 		}
 	}
 	if (accbits) {