From e8dd7b431ccded6dd4373fe8a42a941a2d8d4d06 Mon Sep 17 00:00:00 2001
From: cxl <cxl@f0d560ea-af0d-0410-9eb7-867de7ffcac7>
Date: Mon, 28 Apr 2014 15:46:52 +0000
Subject: [PATCH] Core: QPEncode

git-svn-id: svn://ultimatepp.org/upp/trunk@7332 f0d560ea-af0d-0410-9eb7-867de7ffcac7
---
 uppsrc/Core/Inet.h                 |  1 +
 uppsrc/Core/InetUtil.cpp           | 45 +++++++++++++++++++++++++++++-
 uppsrc/Core/src.tpp/Inet$en-us.tpp |  6 ++++
 3 files changed, 51 insertions(+), 1 deletion(-)

diff --git a/uppsrc/Core/Inet.h b/uppsrc/Core/Inet.h
index e9357cbf9..49a38b339 100644
--- a/uppsrc/Core/Inet.h
+++ b/uppsrc/Core/Inet.h
@@ -11,6 +11,7 @@ String UrlDecode(const char *s, const char *end);
 String UrlDecode(const char *s, int len);
 String UrlDecode(const String& s);
 
+String QPEncode(const char* s);
 String QPDecode(const char *s);
 
 String Base64Encode(const char *s, const char *end);
diff --git a/uppsrc/Core/InetUtil.cpp b/uppsrc/Core/InetUtil.cpp
index 73a80f523..4902c33d0 100644
--- a/uppsrc/Core/InetUtil.cpp
+++ b/uppsrc/Core/InetUtil.cpp
@@ -168,7 +168,50 @@ String UrlDecode(const String& s)
 {
 	return UrlDecode(~s, s.GetLength());
 }
-
+          
+String QPEncode(const char* s)
+{
+	StringBuffer r;
+	int len = 0;
+	const int  limit  = 70;
+	while(*s) {
+		if(s[0] >= 33 && s[0] <= 126 && s[0] != '=') {
+			r.Cat(s[0]);
+			len++;
+		}
+		else 
+		if(s[0] == '\r')
+			;
+		else
+		if(s[0] == '\n') {
+			r.Cat("\r\n");
+			len = 0;
+		}
+		else // Encode HT or SP only if they are at the end of line (before CRLF or EOF)
+		if((s[0] == ' ' || s[0] == '\t') 	&&
+		   (s[1] && s[1] != '\n') 		&&
+		   (s[1] != '\r' || (s[1] == '\r' && s[2] && s[2] != '\n'))) {
+			r.Cat(s[0]);
+			len++;
+		}
+		else {
+			static const char hex[] = "0123456789ABCDEF";
+			r.Cat('=');
+			r.Cat(hex[(s[0] >> 4) & 15]);
+			r.Cat(hex[s[0] & 15]);
+			len += 3;
+		}
+		if(len > limit) {
+			// Soft-break.
+			r.Cat('=');
+			r.Cat("\r\n");
+			len = 0;
+		}
+		s++;
+	}
+	return r;
+}
+    
 String QPDecode(const char *s)
 {
 	StringBuffer r;
diff --git a/uppsrc/Core/src.tpp/Inet$en-us.tpp b/uppsrc/Core/src.tpp/Inet$en-us.tpp
index 4d7109305..fdb6773dc 100644
--- a/uppsrc/Core/src.tpp/Inet$en-us.tpp
+++ b/uppsrc/Core/src.tpp/Inet$en-us.tpp
@@ -56,6 +56,12 @@ tring][@(0.0.255) `&]_[*@3 s])&]
 IME type application/x`-www`-form`-urlencoded] (see UrlEncode).&]
 [s3;%% &]
 [s4; &]
+[s5;:QPEncode`(const char`*`): [_^String^ String]_[* QPEncode]([@(0.0.255) const]_[@(0.0.255) c
+har`*]_[*@3 s])&]
+[s2;%% Encodes string to [^http`:`/`/en`.wikipedia`.org`/wiki`/Quoted`-printable^ quote
+d`-printable] format .&]
+[s3;%% &]
+[s4; &]
 [s5;:QPDecode`(const char`*`): [_^String^ String]_[* QPDecode]([@(0.0.255) const]_[@(0.0.255) c
 har]_`*[*@3 s])&]
 [s2;%% Decodes string from [^http`:`/`/en`.wikipedia`.org`/wiki`/Quoted`-printable^ quo