File indexing completed on 2024-05-12 04:45:13
0001 /* 0002 Copyright (C) 1999-2007 The Botan Project. All rights reserved. 0003 0004 Redistribution and use in source and binary forms, for any use, with or without 0005 modification, is permitted provided that the following conditions are met: 0006 0007 1. Redistributions of source code must retain the above copyright notice, this 0008 list of conditions, and the following disclaimer. 0009 0010 2. Redistributions in binary form must reproduce the above copyright notice, 0011 this list of conditions, and the following disclaimer in the documentation 0012 and/or other materials provided with the distribution. 0013 0014 THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) "AS IS" AND ANY EXPRESS OR IMPLIED 0015 WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 0016 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE DISCLAIMED. 0017 0018 IN NO EVENT SHALL THE AUTHOR(S) OR CONTRIBUTOR(S) BE LIABLE FOR ANY DIRECT, 0019 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 0020 BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 0021 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 0022 LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 0023 OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 0024 ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 0025 */ 0026 // LICENSEHEADER_END 0027 namespace QCA { // WRAPNS_LINE 0028 /************************************************* 0029 * BigInt Input/Output Source File * 0030 * (C) 1999-2007 The Botan Project * 0031 *************************************************/ 0032 0033 } // WRAPNS_LINE 0034 #include <botan/bigint.h> 0035 namespace QCA { // WRAPNS_LINE 0036 } // WRAPNS_LINE 0037 #include <iostream> 0038 namespace QCA { // WRAPNS_LINE 0039 0040 namespace Botan { 0041 0042 #ifndef BOTAN_MINIMAL_BIGINT 0043 0044 /************************************************* 0045 * Write the BigInt into a stream * 0046 *************************************************/ 0047 std::ostream &operator<<(std::ostream &stream, const BigInt &n) 0048 { 0049 BigInt::Base base = BigInt::Decimal; 0050 if (stream.flags() & std::ios::hex) 0051 base = BigInt::Hexadecimal; 0052 else if (stream.flags() & std::ios::oct) 0053 base = BigInt::Octal; 0054 0055 if (n == 0) 0056 stream.write("0", 1); 0057 else { 0058 if (n < 0) 0059 stream.write("-", 1); 0060 SecureVector<byte> buffer = BigInt::encode(n, base); 0061 u32bit skip = 0; 0062 while (skip < buffer.size() && buffer[skip] == '0') 0063 ++skip; 0064 stream.write((const char *)buffer.begin() + skip, buffer.size() - skip); 0065 } 0066 if (!stream.good()) 0067 throw Stream_IO_Error("BigInt output operator has failed"); 0068 return stream; 0069 } 0070 0071 /************************************************* 0072 * Read the BigInt from a stream * 0073 *************************************************/ 0074 std::istream &operator>>(std::istream &stream, BigInt &n) 0075 { 0076 std::string str; 0077 std::getline(stream, str); 0078 if (stream.bad() || (stream.fail() && !stream.eof())) 0079 throw Stream_IO_Error("BigInt input operator has failed"); 0080 n = BigInt(str); 0081 return stream; 0082 } 0083 0084 #endif 0085 0086 } 0087 } // WRAPNS_LINE