# HG changeset patch
# User František Kučera <franta-hg@frantovo.cz>
# Date 1544459333 -3600
# Node ID 92d85e02b276fc78f06d606a45629e3b29325347
# Parent  abf1d424f2a04ff9720d1127cacc07ac63b17091
regex match relation and attribute + replace with a fixed value

diff -r abf1d424f2a0 -r 92d85e02b276 src/CMakeLists.txt
--- a/src/CMakeLists.txt	Mon Dec 10 00:06:54 2018 +0100
+++ b/src/CMakeLists.txt	Mon Dec 10 17:28:53 2018 +0100
@@ -30,7 +30,6 @@
 # Executable output:
 add_executable(
 	${EXECUTABLE_FILE}
-	PassthroughHandler.h
 	relpipe-tr-sed.cpp
 )
 
diff -r abf1d424f2a0 -r 92d85e02b276 src/PassthroughHandler.h
--- a/src/PassthroughHandler.h	Mon Dec 10 00:06:54 2018 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,79 +0,0 @@
-/**
- * Relational pipes
- * Copyright © 2018 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, 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/>.
- */
-#pragma once
-
-#include <memory>
-#include <string>
-#include <vector>
-#include <iostream>
-#include <sstream>
-#include <locale>
-#include <codecvt>
-#include <regex>
-
-#include <relpipe/reader/typedefs.h>
-#include <relpipe/reader/TypeId.h>
-#include <relpipe/reader/handlers/RelationalReaderStringHandler.h>
-#include <relpipe/reader/handlers/AttributeMetadata.h>
-
-#include <relpipe/writer/Factory.h>
-
-namespace relpipe {
-namespace tr {
-namespace validator {
-
-using namespace relpipe;
-using namespace relpipe::reader;
-using namespace relpipe::reader::handlers;
-
-// TODO: use rather RelationalReaderStringHadler
-class PassthroughHandler : public RelationalReaderStringHadler {
-private:
-	writer::RelationalWriter* relationalWriter;
-public:
-
-	PassthroughHandler(std::ostream& output) : relationalWriter(writer::Factory::create(output)) {
-	}
-
-	virtual ~PassthroughHandler() {
-		delete relationalWriter;
-	}
-
-	void startRelation(string_t name, std::vector<AttributeMetadata> attributes) override {
-		// TODO: move to a reusable method (or use same metadata on both reader and writer side?)
-		std::vector<writer::AttributeMetadata> writerMetadata;
-		for (AttributeMetadata readerMetadata : attributes) {
-			writerMetadata.push_back({readerMetadata.getAttributeName(), relationalWriter->toTypeId(readerMetadata.getTypeName())});
-		}
-		
-		relationalWriter->startRelation(name, writerMetadata, true);
-	}
-
-	void attribute(const string_t& value) override {
-		relationalWriter->writeAttribute(value);
-	}
-
-	void endOfPipe() {
-
-	}
-
-};
-
-}
-}
-}
diff -r abf1d424f2a0 -r 92d85e02b276 src/SedHandler.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/SedHandler.h	Mon Dec 10 17:28:53 2018 +0100
@@ -0,0 +1,111 @@
+/**
+ * Relational pipes
+ * Copyright © 2018 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, 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/>.
+ */
+#pragma once
+
+#include <memory>
+#include <string>
+#include <vector>
+#include <iostream>
+#include <sstream>
+#include <locale>
+#include <codecvt>
+#include <regex>
+
+#include <relpipe/reader/typedefs.h>
+#include <relpipe/reader/TypeId.h>
+#include <relpipe/reader/handlers/RelationalReaderStringHandler.h>
+#include <relpipe/reader/handlers/AttributeMetadata.h>
+
+#include <relpipe/writer/Factory.h>
+
+#include <relpipe/cli/RelpipeCLIException.h>
+
+namespace relpipe {
+namespace tr {
+namespace sed {
+
+using namespace std;
+using namespace relpipe;
+using namespace relpipe::reader;
+using namespace relpipe::reader::handlers;
+
+class SedHandler : public RelationalReaderStringHadler {
+private:
+	shared_ptr<writer::RelationalWriter> relationalWriter;
+
+	wregex relationNameRegEx;
+	wregex attributeNameRegEx;
+	wregex searchRegEx;
+	wregex replacementRegEx;
+
+	vector<boolean_t> currentReplacableAttributes;
+	integer_t currentAttributeIndex = 0;
+
+public:
+
+	SedHandler(ostream& output, const vector<string_t>& arguments) {
+		relationalWriter.reset(writer::Factory::create(output));
+
+		if (arguments.size() == 4) {
+			relationNameRegEx = wregex(arguments[0]);
+			attributeNameRegEx = wregex(arguments[1]);
+			searchRegEx = wregex(arguments[2]);
+			replacementRegEx = wregex(arguments[3]);
+		} else {
+			throw cli::RelpipeCLIException(L"Usage: relpipe-tr-sed <relationNameRegExp> <attributeNameRegExp> <searchRegExp> <replacementRegExp>", cli::CLI::EXIT_CODE_UNKNOWN_COMMAND);
+		}
+	}
+
+	void startRelation(string_t name, vector<AttributeMetadata> attributes) override {
+		// TODO: move to a reusable method (or use same metadata on both reader and writer side?)
+		vector<writer::AttributeMetadata> writerMetadata;
+		for (AttributeMetadata readerMetadata : attributes) {
+			writerMetadata.push_back({readerMetadata.getAttributeName(), relationalWriter->toTypeId(readerMetadata.getTypeName())});
+		}
+
+
+		currentReplacableAttributes.resize(attributes.size(), false);
+		if (regex_match(name, relationNameRegEx)) {
+			for (int i = 0; i < currentReplacableAttributes.size(); i++) {
+				currentReplacableAttributes[i] = regex_match(attributes[i].getAttributeName(), attributeNameRegEx);
+			}
+		}
+
+		relationalWriter->startRelation(name, writerMetadata, true);
+	}
+
+	void attribute(const string_t& value) override {
+		if (currentReplacableAttributes[currentAttributeIndex]) {
+			relationalWriter->writeAttribute(L"1234");
+		} else {
+			relationalWriter->writeAttribute(value);
+		}
+
+		currentAttributeIndex++;
+		currentAttributeIndex = currentAttributeIndex % currentReplacableAttributes.size();
+	}
+
+	void endOfPipe() {
+
+	}
+
+};
+
+}
+}
+}
diff -r abf1d424f2a0 -r 92d85e02b276 src/relpipe-tr-sed.cpp
--- a/src/relpipe-tr-sed.cpp	Mon Dec 10 00:06:54 2018 +0100
+++ b/src/relpipe-tr-sed.cpp	Mon Dec 10 17:28:53 2018 +0100
@@ -32,32 +32,32 @@
 #include <relpipe/writer/Factory.h>
 #include <relpipe/writer/TypeId.h>
 
-#include "PassthroughHandler.h"
+#include "SedHandler.h"
 
 using namespace relpipe::cli;
 using namespace relpipe::reader;
-using namespace relpipe::tr::validator;
+using namespace relpipe::tr::sed;
 
 int main(int argc, char**argv) {
 	setlocale(LC_ALL, "");
 	CLI::untieStdIO();
 	CLI cli(argc, argv);
-	
+
 	int resultCode = CLI::EXIT_CODE_UNEXPECTED_ERROR;
 
 	try {
 		std::shared_ptr<RelationalReader> reader(Factory::create(std::cin));
-		PassthroughHandler handler(std::cout);
+		SedHandler handler(std::cout, cli.arguments());
 		reader->addHandler(&handler);
 		reader->process();
 
 		resultCode = CLI::EXIT_CODE_SUCCESS;
 
-	} catch (RelpipeCLIException e) {
+	} catch (RelpipeCLIException& e) {
 		fwprintf(stderr, L"Caught CLI exception: %ls\n", e.getMessge().c_str());
 		fwprintf(stderr, L"Debug: Input stream: eof=%ls, lastRead=%d\n", (cin.eof() ? L"true" : L"false"), cin.gcount());
 		resultCode = e.getExitCode();
-	} catch (RelpipeReaderException e) {
+	} catch (RelpipeReaderException& e) {
 		fwprintf(stderr, L"Caught Reader exception: %ls\n", e.getMessge().c_str());
 		fwprintf(stderr, L"Debug: Input stream: eof=%ls, lastRead=%d\n", (cin.eof() ? L"true" : L"false"), cin.gcount());
 		resultCode = CLI::EXIT_CODE_DATA_ERROR;