--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/lib/UnescapingINIHandler.h Wed Nov 25 21:50:26 2020 +0100
@@ -0,0 +1,99 @@
+/**
+ * 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 <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+
+#include <sstream>
+
+#include "INIReader.h"
+
+using namespace std;
+using namespace relpipe::writer;
+
+namespace relpipe {
+namespace in {
+namespace ini {
+namespace lib {
+
+class UnescapingINIContentHandler : public INIContentHandler {
+private:
+ INIContentHandler& output;
+
+protected:
+ const char ESC = '\\';
+ bool lastEscaphingPhase;
+
+ std::stringstream& put(std::stringstream& result, const char& ch, int& i) {
+ result.put(ch);
+ i++;
+ return result;
+ }
+
+ virtual std::string unescape(const std::string& s) = 0;
+
+public:
+
+ /**
+ * @param output here will be sent events with unescaped values
+ * @param lastEscaphingPhase instances of UnescapingINIContentHandler might be chained:
+ * unsupported escaping sequences are kept untouched to be processed in further phases;
+ * in the last phase, all remaining sequences (including \\) must be recognized and unescaped
+ * (otherwise the input is considered invalid and an exception is thrown)
+ */
+ UnescapingINIContentHandler(INIContentHandler& output, bool lastEscaphingPhase) : output(output), lastEscaphingPhase(lastEscaphingPhase) {
+ }
+
+ void startDocument() override {
+ output.startDocument();
+ }
+
+ void endDocument() override {
+ output.endDocument();
+ }
+
+ void startSection(const SectionStartEvent& event) override {
+ SectionStartEvent e = event;
+ e.name = unescape(e.name);
+ output.startSection(e);
+ }
+
+ void endSection() override {
+ output.endSection();
+ }
+
+ void entry(const EntryEvent& event) override {
+ EntryEvent e = event;
+ e.key = unescape(e.key);
+ e.fullKey = unescape(e.fullKey);
+ e.subKey = unescape(e.subKey);
+ e.value = unescape(e.value);
+ output.entry(e);
+ }
+
+ void comment(const CommentEvent& event) override {
+ output.comment(event);
+ }
+
+ void whitespace(const WhitespaceEvent& event) override {
+ output.whitespace(event);
+ }
+
+};
+
+}
+}
+}
+}