82 lines
2.2 KiB
C++
82 lines
2.2 KiB
C++
// Copyright (c) 2011-2013 The Bitcoin developers
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// Distributed under the MIT/X11 software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#include "bitcoinaddressvalidator.h"
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/* Base58 characters are:
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"123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz"
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This is:
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- All numbers except for '0'
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- All upper-case letters except for 'I' and 'O'
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- All lower-case letters except for 'l'
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User friendly Base58 input can map
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- 'l' and 'I' to '1'
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- '0' and 'O' to 'o'
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*/
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BitcoinAddressValidator::BitcoinAddressValidator(QObject *parent) :
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QValidator(parent)
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{
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}
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QValidator::State BitcoinAddressValidator::validate(QString &input, int &pos) const
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{
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// Correction
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for(int idx=0; idx<input.size();)
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{
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bool removeChar = false;
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QChar ch = input.at(idx);
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// Corrections made are very conservative on purpose, to avoid
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// users unexpectedly getting away with typos that would normally
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// be detected, and thus sending to the wrong address.
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switch(ch.unicode())
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{
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// Qt categorizes these as "Other_Format" not "Separator_Space"
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case 0x200B: // ZERO WIDTH SPACE
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case 0xFEFF: // ZERO WIDTH NO-BREAK SPACE
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removeChar = true;
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break;
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default:
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break;
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}
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// Remove whitespace
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if(ch.isSpace())
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removeChar = true;
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// To next character
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if(removeChar)
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input.remove(idx, 1);
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else
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++idx;
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}
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// Validation
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QValidator::State state = QValidator::Acceptable;
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for(int idx=0; idx<input.size(); ++idx)
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{
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int ch = input.at(idx).unicode();
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if(((ch >= '0' && ch<='9') ||
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(ch >= 'a' && ch<='z') ||
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(ch >= 'A' && ch<='Z')) &&
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ch != 'l' && ch != 'I' && ch != '0' && ch != 'O')
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{
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// Alphanumeric and not a 'forbidden' character
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}
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else
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{
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state = QValidator::Invalid;
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}
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}
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// Empty address is "intermediate" input
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if(input.isEmpty())
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{
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state = QValidator::Intermediate;
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}
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return state;
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}
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