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authorMatthias P. Braendli <matthias.braendli@mpb.li>2019-01-16 15:44:45 +0100
committerMatthias P. Braendli <matthias.braendli@mpb.li>2019-01-16 15:44:45 +0100
commit9d3d404a46dd79ed2b7a6c39719c76839787127e (patch)
tree9f67996d2f72b0f93302d695299b173e50698244 /src/charset.cpp
parent1df947bae7346948e08edb75616d34fcf8802dae (diff)
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Add charset decoder for FIG1 labels
Diffstat (limited to 'src/charset.cpp')
-rw-r--r--src/charset.cpp78
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diff --git a/src/charset.cpp b/src/charset.cpp
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+/*
+ Copyright (C) 2018 Matthias P. Braendli (http://opendigitalradio.org)
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+/*!
+ \file charset.cpp
+ \brief A converter for UTF-8 to EBU Latin charset according to
+ ETSI TS 101 756 Annex C, used for DLS and Labels.
+
+ \author Matthias P. Braendli
+ \author Lindsay Cornell
+*/
+
+#include "charset.hpp"
+#include <algorithm>
+
+/**********************************************/
+/************* BIG FAT WARNING ****************/
+/**********************************************/
+/**** Make sure this file is always saved ****/
+/**** encoded in UTF-8, otherwise you will ****/
+/**** mess up the table below ! ****/
+/**********************************************/
+/********* END OF BIG FAT WARNING *************/
+/**********************************************/
+
+#define CHARSET_TABLE_OFFSET 1 // NUL at index 0 cannot be represented
+#define CHARSET_TABLE_ENTRIES (256 - CHARSET_TABLE_OFFSET)
+
+static const char* utf8_encoded_EBU_Latin[CHARSET_TABLE_ENTRIES] = {
+ "Ę", "Į", "Ų", "Ă", "Ė", "Ď", "Ș", "Ț", "Ċ", "\n","\v","Ġ", "Ĺ", "Ż", "Ń",
+"ą", "ę", "į", "ų", "ă", "ė", "ď", "ș", "ț", "ċ", "Ň", "Ě", "ġ", "ĺ", "ż", "\u0082",
+" ", "!", "\"","#", "ł", "%", "&", "'", "(", ")", "*", "+", ",", "-", ".", "/",
+"0", "1", "2", "3", "4", "5", "6", "7", "8", "9", ":", ";", "<", "=", ">", "?",
+"@", "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O",
+"P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z", "[", "Ů", "]", "Ł", "_",
+"Ą", "a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o",
+"p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z", "«", "ů", "»", "Ľ", "Ħ",
+"á", "à", "é", "è", "í", "ì", "ó", "ò", "ú", "ù", "Ñ", "Ç", "Ş", "ß", "¡", "Ÿ",
+"â", "ä", "ê", "ë", "î", "ï", "ô", "ö", "û", "ü", "ñ", "ç", "ş", "ğ", "ı", "ÿ",
+"Ķ", "Ņ", "©", "Ģ", "Ğ", "ě", "ň", "ő", "Ő", "€", "£", "$", "Ā", "Ē", "Ī", "Ū",
+"ķ", "ņ", "Ļ", "ģ", "ļ", "İ", "ń", "ű", "Ű", "¿", "ľ", "°", "ā", "ē", "ī", "ū",
+"Á", "À", "É", "È", "Í", "Ì", "Ó", "Ò", "Ú", "Ù", "Ř", "Č", "Š", "Ž", "Ð", "Ŀ",
+"Â", "Ä", "Ê", "Ë", "Î", "Ï", "Ô", "Ö", "Û", "Ü", "ř", "č", "š", "ž", "đ", "ŀ",
+"Ã", "Å", "Æ", "Œ", "ŷ", "Ý", "Õ", "Ø", "Þ", "Ŋ", "Ŕ", "Ć", "Ś", "Ź", "Ť", "ð",
+"ã", "å", "æ", "œ", "ŵ", "ý", "õ", "ø", "þ", "ŋ", "ŕ", "ć", "ś", "ź", "ť", "ħ"};
+
+using namespace std;
+
+std::string convert_ebu_to_utf8(const std::string& str)
+{
+ string utf8_str;
+ for (const uint8_t c : str) {
+ // Table offset because NUL is not represented
+ if (c >= CHARSET_TABLE_OFFSET) {
+ string utf8_char(utf8_encoded_EBU_Latin[c - CHARSET_TABLE_OFFSET]);
+ utf8_str += utf8_char;
+ }
+ else {
+ utf8_str += "⁇";
+ }
+ }
+
+ return utf8_str;
+}
+