1 files changed, 98 insertions, 0 deletions
diff --git a/Src/nu/AutoHeader.h b/Src/nu/AutoHeader.h
new file mode 100644
index 00000000..366b169d
--- /dev/null
+++ b/Src/nu/AutoHeader.h
@@ -0,0 +1,98 @@
+#ifndef NULLSOFT_AUTOHEADERH
+#define NULLSOFT_AUTOHEADERH
+
+#include <windows.h>
+#include "AutoChar.h"
+
+
+
+/* encodes a UTF-8 string into a buffer, returns a pointer to the end of the string */
+inline char *AutoHeader_Encode(const char *in, char *out, size_t len)
+{
+	if (!len)
+		return 0;
+
+	char *dest=out;
+	const unsigned char *src = (const unsigned char *)in;
+	while (*src && --len)
+	{
+		if ((*src >= 'A' && *src <= 'Z') ||
+		        (*src >= 'a' && *src <= 'z') ||
+		        (*src >= '0' && *src <= '9') || *src == '.' || *src == '-' || *src == '~')
+		{
+			*dest++=*src++;
+		}
+		else if (len > 2)
+		{
+			int i = *src++;
+			*dest++ = '=';
+			int b = (i >> 4) & 15;
+			if (b < 10) *dest++ = '0' + b;
+			else *dest++ = 'A' + b - 10;
+			b = i & 15;
+			if (b < 10) *dest++ = '0' + b;
+			else *dest++ = 'A' + b - 10;
+		}
+		else
+			break;
+	}
+	*dest=0;
+	return dest;
+}
+
+
+inline char *AutoHeaderDup(const wchar_t *convert)
+{
+	if (!convert)
+		return 0;
+
+	BOOL failed=FALSE;
+	int n = WideCharToMultiByte(28591, WC_NO_BEST_FIT_CHARS, convert, -1, 0, 0, 0, &failed);
+	if (n && !failed)
+	{
+		char *url = (char *)malloc(n + 1);
+		WideCharToMultiByte(28591, WC_NO_BEST_FIT_CHARS, convert, -1, url, n+1, 0, 0);
+		return url;
+	}
+
+	AutoChar utf8(convert, CP_UTF8);
+	size_t size = strlen(utf8)*3+1; // one byte might get encoded to 3 bytes, so we'll malloc for worst-case
+
+	char *url= (char *)malloc((9  /*?utf-8?q?*/+ size + 2 /*?=*/)*sizeof(char));
+	memcpy(url, "?utf-8?q?", 9);
+	char *end = AutoHeader_Encode(utf8, url+9, size);
+	strcpy(end, "?=");
+	return url;
+}
+
+class AutoHeader
+{
+public:
+
+	AutoHeader(const wchar_t *convert) : narrow(0)
+	{
+		narrow = AutoHeaderDup(convert);
+	}
+	AutoHeader(const AutoHeader &convert) : narrow(0)
+	{
+		if (convert.narrow)
+			narrow = _strdup(convert.narrow);
+	}
+	~AutoHeader()
+	{
+		free(narrow);
+		narrow=0;
+	}
+	operator const char *()
+	{
+		return narrow;
+	}
+	operator char *()
+	{
+		return narrow;
+	}
+private:
+	char *narrow;
+};
+
+#endif
+\ No newline at end of file