diff -r fd669e73d39a -r 0e7c57d48d1e src/lib/BasicUnescapingProcessor.h
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/lib/BasicUnescapingProcessor.h Sat Nov 28 18:14:15 2020 +0100
@@ -0,0 +1,67 @@
+/**
+ * Relational pipes
+ * Copyright © 2020 František Kučera (Frantovo.cz, GlobalCode.info)
+ *
+ * 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, version 3 of the License.
+ *
+ * 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 .
+ */
+#pragma once
+
+#include
+
+#include "UnescapingProcessor.h"
+
+using namespace std;
+using namespace relpipe::writer;
+
+namespace relpipe {
+namespace in {
+namespace ini {
+namespace lib {
+
+class BasicUnescapingProcessor : public UnescapingProcessor {
+public:
+
+ std::string unescape(const std::string& s, const TextType type) override {
+ std::stringstream result;
+ for (int i = 0, length = s.size(); i < length; i++) {
+ char ch = s[i];
+ if (i + 1 < length && ch == ESC) {
+ ch = s[i + 1];
+ if (ch == 'n') put(result, '\n', i);
+ else if (ch == 'r') put(result, '\r', i);
+ else if (ch == 't') put(result, '\t', i);
+ else if (ch == 's') put(result, ' ', i); // TODO: Reconsider what is „basic“ escaping and should be supported.
+ else if (ch == '"') put(result, ch, i); // The delimiters (\n,]",') are already unescaped during the first stage in the INIReader while parsing (the delimiter relevant to given environment is unescaped, e.g. \" in "quoted" value).
+ else if (ch == '\'') put(result, ch, i); // So it does not necessary to do it here. But someone might write a="xxx\'zzz" however it is superfluous because a="xxx'zzz" will also work.
+ else if (ch == ']') put(result, ch, i);
+ else if (ch == ':') put(result, ch, i);
+ else if (ch == ';') put(result, ch, i);
+ else if (ch == '#') put(result, ch, i);
+ else if (ch == '=') put(result, ch, i);
+ else if (ch == ESC) put(result, ESC, i).put(ESC); // copy and skip even the second \ to avoid its misinterpretation in the next cycle
+ else result.put(ESC); // keep the escape sequence for later unescaping phase
+ } else if (ch == ESC) {
+ throw std::logic_error(std::string("Missing escape sequence")); // this should not happen
+ } else {
+ result.put(ch);
+ }
+ }
+ return result.str();
+ }
+
+};
+
+}
+}
+}
+}