1 files changed, 80 insertions, 0 deletions
diff --git a/comm/third_party/botan/src/lib/utils/charset.h b/comm/third_party/botan/src/lib/utils/charset.h
new file mode 100644
index 0000000000..6e7ce30c91
--- /dev/null
+++ b/comm/third_party/botan/src/lib/utils/charset.h
@@ -0,0 +1,80 @@
+/*
+* Character Set Handling
+* (C) 1999-2007 Jack Lloyd
+*
+* Botan is released under the Simplified BSD License (see license.txt)
+*/
+
+#ifndef BOTAN_CHARSET_H_
+#define BOTAN_CHARSET_H_
+
+#include <botan/types.h>
+#include <string>
+
+BOTAN_FUTURE_INTERNAL_HEADER(charset.h)
+
+namespace Botan {
+
+/**
+* Convert a sequence of UCS-2 (big endian) characters to a UTF-8 string
+* This is used for ASN.1 BMPString type
+* @param ucs2 the sequence of UCS-2 characters
+* @param len length of ucs2 in bytes, must be a multiple of 2
+*/
+std::string BOTAN_UNSTABLE_API ucs2_to_utf8(const uint8_t ucs2[], size_t len);
+
+/**
+* Convert a sequence of UCS-4 (big endian) characters to a UTF-8 string
+* This is used for ASN.1 UniversalString type
+* @param ucs4 the sequence of UCS-4 characters
+* @param len length of ucs4 in bytes, must be a multiple of 4
+*/
+std::string BOTAN_UNSTABLE_API ucs4_to_utf8(const uint8_t ucs4[], size_t len);
+
+/**
+* Convert a UTF-8 string to Latin-1
+* If a character outside the Latin-1 range is encountered, an exception is thrown.
+*/
+std::string BOTAN_UNSTABLE_API utf8_to_latin1(const std::string& utf8);
+
+/**
+* The different charsets (nominally) supported by Botan.
+*/
+enum Character_Set {
+   LOCAL_CHARSET,
+   UCS2_CHARSET,
+   UTF8_CHARSET,
+   LATIN1_CHARSET
+};
+
+namespace Charset {
+
+/*
+* Character set conversion - avoid this.
+* For specific conversions, use the functions above like
+* ucs2_to_utf8 and utf8_to_latin1
+*
+* If you need something more complex than that, use a real library
+* such as iconv, Boost.Locale, or ICU
+*/
+std::string BOTAN_PUBLIC_API(2,0)
+   BOTAN_DEPRECATED("Avoid. See comment in header.")
+   transcode(const std::string& str,
+             Character_Set to,
+             Character_Set from);
+
+/*
+* Simple character classifier functions
+*/
+bool BOTAN_PUBLIC_API(2,0) is_digit(char c);
+bool BOTAN_PUBLIC_API(2,0) is_space(char c);
+bool BOTAN_PUBLIC_API(2,0) caseless_cmp(char x, char y);
+
+uint8_t BOTAN_PUBLIC_API(2,0) char2digit(char c);
+char BOTAN_PUBLIC_API(2,0) digit2char(uint8_t b);
+
+}
+
+}
+
+#endif