initial checkin of C++ port (in progress)

git-svn-id: svn://svn.code.sf.net/p/magicseteditor/code/trunk@2 0fc631ac-6414-0410-93d0-97cfa31319b6

src/util/io/writer.cpp

@@ -0,0 +1,108 @@
+//+----------------------------------------------------------------------------+
+//| Description:  Magic Set Editor - Program to make Magic (tm) cards          |
+//| Copyright:    (C) 2001 - 2006 Twan van Laarhoven                           |
+//| License:      GNU General Public License 2 or later (see file COPYING)     |
+//+----------------------------------------------------------------------------+
+
+// ----------------------------------------------------------------------------- : Includes
+
+#include "writer.hpp"
+#include <util/vector2d.hpp>
+#include <util/error.hpp>
+
+// ----------------------------------------------------------------------------- : Writer
+
+Writer::Writer(const OutputStreamP& output)
+	: output(output)
+	, stream(*output)
+	, indentation(0)
+	, justOpened(false)
+{
+	stream.WriteString(BYTE_ORDER_MARK);
+}
+
+
+void Writer::enterBlock(const Char* name) {
+	// indenting into a sub-block?
+	if (justOpened) {
+		writeKey();
+		stream.WriteString(_(":\n"));
+	}
+	// don't write the key yet
+	indentation += 1;
+	openedKey = name;
+	justOpened = true;
+}
+
+void Writer::exitBlock() {
+	assert(indentation > 0);
+	indentation -= 1;
+	justOpened = false;
+}
+
+void Writer::writeKey() {
+	writeIndentation();
+	writeUTF8(stream, openedKey);
+}
+void Writer::writeIndentation() {
+	for(int i = 1 ; i < indentation ; ++i) {
+		stream.PutChar(_('\t'));
+	}
+}
+
+// ----------------------------------------------------------------------------- : Handling basic types
+
+void Writer::handle(const String& value) {
+	if (!justOpened) {
+		throw InternalError(_("Can only write a value in a key that was just opened"));
+	}
+	// write indentation and key
+	writeKey();
+	writeUTF8(stream, _(": "));
+	if (value.find_first_of(_('\n')) != String::npos) {
+		// multiline string
+		stream.PutChar(_('\n'));
+		indentation += 1;
+		// split lines, and write each line
+		size_t start = 0, end, size = value.size();
+		while (start < size) {
+			end = value.find_first_of(_("\n\r"), start); // until end of line
+			// write the line
+			writeIndentation();
+			writeUTF8(stream, value.substr(start, end - start));
+			stream.PutChar(_('\n'));
+			// Skip \r and \n
+			if (end == String::npos) break;
+			start = end + 1;
+			if (start < size) {
+				Char c1 = value.GetChar(start - 1);
+				Char c2 = value.GetChar(start);
+				// skip second character of \r\n or \n\r
+				if (c1 != c2 && (c2 == _('\r') || c2 == _('\n')))  start += 1;
+			}
+		}
+		indentation -= 1;
+	} else {
+		writeUTF8(stream, value);
+	}
+	stream.PutChar(_('\n'));
+	justOpened = false;
+}
+
+template <> void Writer::handle(const int& value) {
+	handle(String() << value);
+}
+template <> void Writer::handle(const double& value) {
+	handle(String() << value);
+}
+template <> void Writer::handle(const bool& value) {
+	handle(value ? _("true") : _("false"));
+}
+
+// ----------------------------------------------------------------------------- : Handling less basic util types
+
+template <> void Writer::handle(const Vector2D& vec) {
+	String formated;
+	formated.Printf(_("(%.10lf,%.10lf)"), vec.x, vec.y);
+	handle(formated);
+}