Use an Fmt object to store the float format

[libs/datafile.git] / source / textwriter.cpp

diff --git a/source/textwriter.cpp b/source/textwriter.cpp
index c870ba0c20d7888f19725761924171c6b01662d9..f37b7339e462f35f1cc5461c60dbb60a8a8a3b4b 100644 (file)
--- a/source/textwriter.cpp
+++ b/source/textwriter.cpp
@@ -10,13 +10,14 @@ namespace Msp {
 namespace DataFile {
 
 TextWriter::TextWriter(Output &o):
-       WriterMode(o),
-       float_format("%#.7g")
-{ }
+       WriterMode(o)
+{
+       float_format.showpoint().precision(7);
+}
 
 void TextWriter::set_float_precision(unsigned fp)
 {
-       float_format = format("%%#.%dg", fp/4-1);
+       float_format.precision(fp/4-1);
 }
 
 void TextWriter::write(const Statement &st)
@@ -39,7 +40,7 @@ void TextWriter::write_(const Statement &st, unsigned level)
                else if(i->get_signature()==IntType::signature)
                        out.write(lexical_cast<string>(i->get<IntType::Store>()));
                else if(i->get_signature()==FloatType::signature)
-                       out.write(format(float_format, i->get<FloatType::Store>()));
+                       out.write(lexical_cast<string>(i->get<FloatType::Store>(), float_format));
                else if(i->get_signature()==SymbolType::signature)
                {
                        string name = i->get<SymbolType::Store>().name;