91 lines
No EOL
3.3 KiB
C++
91 lines
No EOL
3.3 KiB
C++
#include <algorithm>
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#include <map>
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#include <regex>
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#include "morse.h"
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std::map<char, std::string> morseCode = {
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{'A', ".-"}, {'B', "-..."}, {'C', "-.-."}, {'D', "-.."}, {'E', "."}, {'F', "..-."},
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{'G', "--."}, {'H', "...."}, {'I', ".."}, {'J', ".---"}, {'K', "-.-"}, {'L', ".-.."},
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{'M', "--"}, {'N', "-."}, {'O', "---"}, {'P', ".--."}, {'Q', "--.-"}, {'R', ".-."},
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{'S', "..."}, {'T', "-"}, {'U', "..-"}, {'V', "...-"}, {'W', ".--"}, {'X', "-..-"},
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{'Y', "-.--"}, {'Z', "--.."}, {'1', ".----"}, {'2', "..---"}, {'3', "...--"}, {'4', "....-"},
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{'5', "....."}, {'6', "-...."}, {'7', "--..."}, {'8', "---.."}, {'9', "----."}, {'0', "-----"},
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{',', "--..--"}, {'.', ".-.-.-"}, {'?', "..--.."}, {'/', "-..-."}, {'-', "-....-"}, {':', "---..."},
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{'&', ".-..."}, {'\'', ".----."}, {'@', ".--.-."}, {')', "-.--.-"}, {'(', "-.--."}, {'\"', ".-..-."},
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{'=', "-...-"}, // '=' == <BT>
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{'k', "-.--."}, // k == <KN>
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{'s', "...-.-"}, // s == <SK>
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{'+', ".-.-."}, // + == <AR>
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{'a', "-.-.-"}, // a == <KA>
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};
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std::string refurbishMessage(const std::string &msg)
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{
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std::string msgRefurb;
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msgRefurb.resize(msg.length());
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// Make the message all upper case
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std::transform(msg.cbegin(), msg.cend(), msgRefurb.begin(), [](unsigned char c) { return std::toupper(c); });
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// Encode the special characters as we like it
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msgRefurb = std::regex_replace(msgRefurb, std::regex("<BT>"), "=");
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msgRefurb = std::regex_replace(msgRefurb, std::regex("<KN>"), "k");
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msgRefurb = std::regex_replace(msgRefurb, std::regex("<SK>"), "s");
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msgRefurb = std::regex_replace(msgRefurb, std::regex("<AR>"), "+");
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msgRefurb = std::regex_replace(msgRefurb, std::regex("<KA>"), "a");
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// Remove all other unknown characters
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msgRefurb.erase(remove_if(msgRefurb.begin(), msgRefurb.end(),
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[](const char &c) { return c != ' ' && morseCode.find(c) == morseCode.end(); }),
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msgRefurb.end());
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// Remove spaces, if there are too many of them
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msgRefurb = std::regex_replace(msgRefurb, std::regex("(\\s+)"), " ");
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return msgRefurb;
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}
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std::string messageToMorse(const std::string &msg)
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{
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std::string refMsg = refurbishMessage(msg);
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std::string morseString;
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for (unsigned int i = 0; i < refMsg.length(); i++) {
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auto c = refMsg[i];
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if (c == ' ') {
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// morseString.append(" ");
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morseString += 'w';
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continue;
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}
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// Ignore and continue with next char, if not found
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auto search = morseCode.find(c);
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if (search == morseCode.end()) {
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continue;
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}
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for (unsigned int j = 0; j < morseCode[c].length(); j++) {
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auto m = morseCode[c][j];
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if (j == 0 && i > 0 && refMsg[i - 1] != ' ') {
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// morseString.append(" ");
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morseString += 'c';
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}
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morseString += m;
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if (j < morseCode[c].length() - 1) {
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// morseString.append(" ");
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morseString += 'i';
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}
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}
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}
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// Append word space if last char was not a blank
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if (refMsg.back() != ' ') {
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// morseString.append(" ");
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morseString += 'w';
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}
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return morseString;
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} |