From 094c64b67cedc080bf8dcf218105f31f5b479296 Mon Sep 17 00:00:00 2001
From: John Wiegley <johnw@newartisans.com>
Date: Wed, 28 Jan 2009 20:49:44 -0400
Subject: [PATCH] amount_t and commodity_t objects can now stream themselves to
 XML.

---
 src/amount.cc    | 16 ++++++++++++++++
 src/amount.h     |  3 +++
 src/commodity.cc | 34 ++++++++++++++++++++++++++++++++++
 src/commodity.h  |  3 +++
 src/utils.h      | 12 ++++++++++++
 5 files changed, 68 insertions(+)

diff --git a/src/amount.cc b/src/amount.cc
index 591b0901..dced0625 100644
--- a/src/amount.cc
+++ b/src/amount.cc
@@ -1396,6 +1396,22 @@ void amount_t::write(std::ostream& out, unsigned int index) const
   }
 }
 
+void amount_t::read_xml(std::istream& in)
+{
+}
+
+void amount_t::write_xml(std::ostream& out, const int depth) const
+{
+  xml_print(out, "<amount>\n", depth);
+
+  commodity().write_xml(out, depth + 1);
+
+  xml_print(out, "<quantity>", depth + 1);
+  out << quantity_string() << "</quantity>\n";
+
+  xml_print(out, "</amount>\n", depth);
+}
+
 bool amount_t::valid() const
 {
   if (quantity) {
diff --git a/src/amount.h b/src/amount.h
index a9e60be3..f28980f0 100644
--- a/src/amount.h
+++ b/src/amount.h
@@ -703,6 +703,9 @@ public:
 	    char **	  pool_next = NULL);
   void write(std::ostream& out, unsigned int index = 0) const;
 
+  void read_xml(std::istream& in);
+  void write_xml(std::ostream& out, const int depth = 0) const;
+
   /**
    * Debugging methods.  There are two methods defined to help with
    * debugging:
diff --git a/src/commodity.cc b/src/commodity.cc
index d674833c..09e9deca 100644
--- a/src/commodity.cc
+++ b/src/commodity.cc
@@ -739,6 +739,40 @@ void annotated_commodity_t::write_annotations(std::ostream&       out,
     out << " (" << *info.tag << ')';
 }
 
+void commodity_t::read_xml(std::istream& in)
+{
+}
+
+void commodity_t::write_xml(std::ostream& out, const int depth) const
+{
+  xml_print(out, "<commodity flags=\"", depth);
+
+  if (! (flags() & COMMODITY_STYLE_SUFFIXED)) out << 'P';
+  if (flags() & COMMODITY_STYLE_SEPARATED)    out << 'S';
+  if (flags() & COMMODITY_STYLE_THOUSANDS)    out << 'T';
+  if (flags() & COMMODITY_STYLE_EUROPEAN)     out << 'E';
+  out << "\">\n";
+
+#if 0
+  // jww (2006-03-02): !!!
+  if (price) {
+  for (int i = 0; i < depth + 2; i++) out << ' ';
+    out << "<symbol>" << base->symbol << "</symbol>\n";
+    for (int i = 0; i < depth + 2; i++) out << ' ';
+    out << "<price>\n";
+    xml_write_amount(out, *price, depth + 4);
+    for (int i = 0; i < depth + 2; i++) out << ' ';
+    out << "</price>\n";
+  } else
+#endif
+  {
+    xml_print(out, "<symbol>", depth + 1);
+    out << symbol() << "</symbol>\n";
+  }
+
+  xml_print(out, "</commodity>\n", depth);
+}
+
 bool compare_amount_commodities::operator()(const amount_t * left,
 					    const amount_t * right) const
 {
diff --git a/src/commodity.h b/src/commodity.h
index 38fdc9ba..7a42ca67 100644
--- a/src/commodity.h
+++ b/src/commodity.h
@@ -359,6 +359,9 @@ public:
   void read(char *& data);
   void write(std::ostream& out) const;
 
+  void read_xml(std::istream& in);
+  void write_xml(std::ostream& out, const int depth = 0) const;
+
   bool valid() const;
 };
 
diff --git a/src/utils.h b/src/utils.h
index 0d511a38..c761f277 100644
--- a/src/utils.h
+++ b/src/utils.h
@@ -535,6 +535,18 @@ inline char peek_next_nonws(std::istream& in) {
   return c;
 }
 
+inline void xml_space(std::ostream& out, const int depth = 0) {
+  for (int i = 0; i < depth; i++)
+    out << "  ";
+}
+
+inline void xml_print(std::ostream& out,
+		      const string& str,
+		      const int     depth = 0) {
+  xml_space(out, depth);
+  out << str;
+}
+
 #define READ_INTO(str, targ, size, var, cond) {				\
   char * _p = targ;							\
   var = str.peek();							\