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authorDaniel Wilhelm <daniel@wili.li>2014-04-18 17:31:23 +0200
committerDaniel Wilhelm <daniel@wili.li>2014-04-18 17:31:23 +0200
commit851b6f99c1248c8ec8e33322a3179c1d82fdd515 (patch)
tree5b9abf4c4e648ea48ed4873e3c4bf1b225c64daf /zen/base64.h
parent6.1 (diff)
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6.2
Diffstat (limited to 'zen/base64.h')
-rw-r--r--zen/base64.h157
1 files changed, 0 insertions, 157 deletions
diff --git a/zen/base64.h b/zen/base64.h
deleted file mode 100644
index ae896e70..00000000
--- a/zen/base64.h
+++ /dev/null
@@ -1,157 +0,0 @@
-// **************************************************************************
-// * This file is part of the FreeFileSync project. It is distributed under *
-// * GNU General Public License: http://www.gnu.org/licenses/gpl.html *
-// * Copyright (C) Zenju (zenju AT gmx DOT de) - All Rights Reserved *
-// **************************************************************************
-
-#ifndef BASE64_HEADER_08473021856321840873021487213453214
-#define BASE64_HEADER_08473021856321840873021487213453214
-
-#ifndef NDEBUG //no release build dependencies!
-#include <iterator>
-#include <cassert>
-#endif
-
-namespace zen
-{
-//http://en.wikipedia.org/wiki/Base64
-/*
-Usage:
- const std::string input = "Sample text";
- std::string output;
- zen::encodeBase64(input.begin(), input.end(), std::back_inserter(output));
- //output contains "U2FtcGxlIHRleHQ="
-*/
-template <class InputIterator, class OutputIterator>
-OutputIterator encodeBase64(InputIterator first, InputIterator last, OutputIterator result); //nothrow!
-
-template <class InputIterator, class OutputIterator>
-OutputIterator decodeBase64(InputIterator first, InputIterator last, OutputIterator result); //nothrow!
-
-
-
-
-
-
-
-
-
-
-
-
-//------------------------- implementation -------------------------------
-namespace implementation
-{
-//64 chars for base64 encoding + padding char
-const char ENCODING_MIME[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
-const signed char DECODING_MIME[] =
-{
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63,
- 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, 64, -1, -1,
- -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
- 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1,
- -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
- 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -1, -1
-};
-const unsigned char INDEX_PAD = 64; //"="
-}
-
-
-//http://en.wikipedia.org/wiki/Base64
-template <class InputIterator, class OutputIterator> inline
-OutputIterator encodeBase64(InputIterator first, InputIterator last, OutputIterator result)
-{
- using namespace implementation;
- static_assert(sizeof(typename std::iterator_traits<InputIterator>::value_type) == 1, "");
- static_assert(sizeof(ENCODING_MIME) == 65 + 1, "");
-
- while (first != last)
- {
- const unsigned char a = static_cast<unsigned char>(*first++);
- *result++ = ENCODING_MIME[a >> 2];
-
- if (first == last)
- {
- *result++ = ENCODING_MIME[((a & 0x3) << 4)];
- *result++ = ENCODING_MIME[INDEX_PAD];
- *result++ = ENCODING_MIME[INDEX_PAD];
- break;
- }
- const unsigned char b = static_cast<unsigned char>(*first++);
- *result++ = ENCODING_MIME[((a & 0x3) << 4) | (b >> 4)];
-
- if (first == last)
- {
- *result++ = ENCODING_MIME[((b & 0xf) << 2)];
- *result++ = ENCODING_MIME[INDEX_PAD];
- break;
- }
- const unsigned char c = static_cast<unsigned char>(*first++);
- *result++ = ENCODING_MIME[((b & 0xf) << 2) | (c >> 6)];
- *result++ = ENCODING_MIME[c & 0x3f];
- }
-
- return result;
-}
-
-
-template <class InputIterator, class OutputIterator> inline
-OutputIterator decodeBase64(InputIterator first, InputIterator last, OutputIterator result)
-{
- using namespace implementation;
- static_assert(sizeof(typename std::iterator_traits<InputIterator>::value_type) == 1, "");
- static_assert(sizeof(DECODING_MIME) == 128, "");
-
- const unsigned char INDEX_END = INDEX_PAD + 1;
-
- auto readIndex = [&]() -> unsigned char //return index within [0, 64] or INDEX_END if end of input
- {
- while (true)
- {
- if (first == last)
- return INDEX_END;
-
- const unsigned char ch = static_cast<unsigned char>(*first++);
- if (ch < 128) //we're in lower ASCII table half
- {
- const int index = implementation::DECODING_MIME[ch];
- if (0 <= index && index <= static_cast<int>(INDEX_PAD)) //skip all unknown characters (including carriage return, line-break, tab)
- return index;
- }
- }
- };
-
- for (;;)
- {
- const unsigned char index1 = readIndex();
- const unsigned char index2 = readIndex();
- if (index1 >= INDEX_PAD || index2 >= INDEX_PAD)
- {
- assert(index1 == INDEX_END && index2 == INDEX_END);
- break;
- }
- *result++ = static_cast<char>((index1 << 2) | (index2 >> 4));
-
- const unsigned char index3 = readIndex();
- if (index3 >= INDEX_PAD) //padding
- {
- assert(index3 == INDEX_PAD);
- break;
- }
- *result++ = static_cast<char>(((index2 & 0xf) << 4) | (index3 >> 2));
-
- const unsigned char index4 = readIndex();
- if (index4 >= INDEX_PAD) //padding
- {
- assert(index4 == INDEX_PAD);
- break;
- }
- *result++ = static_cast<char>(((index3 & 0x3) << 6) | index4);
- }
- return result;
-}
-}
-
-#endif //BASE64_HEADER_08473021856321840873021487213453214
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