new I/O interface

lib/serialisation/TextIO.cc

@@ -0,0 +1,66 @@
+#include <Grid.h>
+
+using namespace Grid;
+using namespace std;
+
+// Writer implementation ///////////////////////////////////////////////////////
+TextWriter::TextWriter(const string &fileName)
+: file_(fileName, ios::out)
+{}
+
+void TextWriter::push(const string &s)
+{
+  level_++;
+};
+
+void TextWriter::pop(void)
+{
+  level_--;
+};
+
+void TextWriter::indent(void)
+{
+  for (int i = 0; i < level_; ++i)
+  {
+    file_ << '\t';
+  }
+};
+
+// Reader implementation ///////////////////////////////////////////////////////
+TextReader::TextReader(const string &fileName)
+: file_(fileName, ios::in)
+{}
+
+void TextReader::push(const string &s)
+{
+  level_++;
+};
+
+void TextReader::pop(void)
+{
+  level_--;
+};
+
+void TextReader::checkIndent(void)
+{
+  char c;
+  
+  for (int i = 0; i < level_; ++i)
+  {
+    file_.get(c);
+    if (c != '\t')
+    {
+      cerr << "mismatch on tab " << c << " level " << level_;
+      cerr << " i "<< i <<endl;
+      abort();
+    }
+  }
+}
+
+template <>
+void TextReader::readDefault(const string &s, string &output)
+{
+  checkIndent();
+  output.clear();
+  getline(file_, output);
+}