From 4223db35df5400187e9d640e204df669dbcc655c Mon Sep 17 00:00:00 2001
From: randomdan <randomdan@localhost>
Date: Sat, 15 Oct 2011 01:40:24 +0000
Subject: Add some functional variables for date handling and string
 manipulation

---
 project2/common/Jamfile.jam           |  1 +
 project2/common/functions/dates.cpp   | 95 +++++++++++++++++++++++++++++++++++
 project2/common/functions/strings.cpp | 29 +++++++++++
 3 files changed, 125 insertions(+)
 create mode 100644 project2/common/functions/dates.cpp
 create mode 100644 project2/common/functions/strings.cpp

diff --git a/project2/common/Jamfile.jam b/project2/common/Jamfile.jam
index 517be8e..9f8f012 100644
--- a/project2/common/Jamfile.jam
+++ b/project2/common/Jamfile.jam
@@ -25,6 +25,7 @@ lib p2common :
 	variables-modparam.cpp
 	variables-modsession.cpp
 	variables-moduri.cpp
+	[ glob functions/*.cpp ]
 	../../libmisc/buffer.cpp
 	../../libmisc/misc.cpp
 	:
diff --git a/project2/common/functions/dates.cpp b/project2/common/functions/dates.cpp
new file mode 100644
index 0000000..da169cf
--- /dev/null
+++ b/project2/common/functions/dates.cpp
@@ -0,0 +1,95 @@
+#include <pch.hpp>
+#include "../variables.h"
+#include "../xmlObjectLoader.h"
+#include "../xmlStorage.h"
+#include "../logger.h"
+#include <locale>
+#include <iostream>
+#include <boost/date_time.hpp>
+
+class ParseError { };
+/// Variable implementation to access platform configuration values
+class ParseDate : public VariableImplDyn {
+	public:
+		ParseDate(const xmlpp::Element * e) :
+			VariableImplDyn(e),
+			string(e, "string"),
+			format(e, "format")
+		{
+		}
+		VariableType value() const
+		{
+			const char * s = string();
+			const char * f = format();
+			boost::posix_time::ptime t;
+			struct tm tm;
+			memset(&tm, 0, sizeof(struct tm));
+			mktime(&tm);
+			const char * e = strptime(s, f, &tm);
+			if (!e) {
+				Logger()->messagef(LOG_ERR, "%s: check failed (parse) for '%s' against '%s' (remaining chars='%s')",
+						__PRETTY_FUNCTION__, s, f, e);
+				throw ParseError();
+			}
+			return boost::posix_time::ptime(boost::posix_time::ptime_from_tm(tm));
+		}
+	private:
+		Variable string;
+		Variable format;
+};
+DECLARE_COMPONENT_LOADER("parsedate", ParseDate, VariableLoader);
+
+class FormatDate : public VariableImplDyn {
+	public:
+		FormatDate(const xmlpp::Element * e) :
+			VariableImplDyn(e),
+			date(e, "date"),
+			format(e, "format")
+		{
+		}
+		VariableType value() const
+		{
+			std::stringstream ss;
+			boost::date_time::time_facet<boost::posix_time::ptime, char> * ft = new boost::date_time::time_facet<boost::posix_time::ptime, char>();
+			ss.imbue(std::locale(ss.getloc(), ft));
+			ft->format(format());
+			ss << boost::get<boost::posix_time::ptime>(date());
+			return ss.str();
+		}
+	private:
+		Variable date;
+		Variable format;
+};
+DECLARE_COMPONENT_LOADER("formatdate", FormatDate, VariableLoader);
+
+class AdjustDate : public VariableImplDyn {
+	public:
+		AdjustDate(const xmlpp::Element * e) :
+			VariableImplDyn(e),
+			date(e, "date"),
+			offset(e, "offset")
+		{
+		}
+		VariableType value() const
+		{
+			return boost::get<boost::posix_time::ptime>(date()) + boost::posix_time::duration_from_string(offset());
+		}
+	private:
+		Variable date;
+		Variable offset;
+};
+DECLARE_COMPONENT_LOADER("adjustdate", AdjustDate, VariableLoader);
+
+class CurrentDate : public VariableImplDyn {
+	public:
+		CurrentDate(const xmlpp::Element * e) :
+			VariableImplDyn(e)
+		{
+		}
+		VariableType value() const
+		{
+			return boost::posix_time::microsec_clock::universal_time();
+		}
+};
+DECLARE_COMPONENT_LOADER("currentdate", CurrentDate, VariableLoader);
+
diff --git a/project2/common/functions/strings.cpp b/project2/common/functions/strings.cpp
new file mode 100644
index 0000000..1272c6c
--- /dev/null
+++ b/project2/common/functions/strings.cpp
@@ -0,0 +1,29 @@
+#include <pch.hpp>
+#include "../variables.h"
+#include "../xmlObjectLoader.h"
+#include "../xmlStorage.h"
+
+/// Variable implementation to access platform configuration values
+class Trim : public VariableImplDyn {
+	public:
+		Trim(const xmlpp::Element * e) :
+			VariableImplDyn(e),
+			string(e, "string")
+		{
+		}
+		VariableType value() const
+		{
+			Glib::ustring str = string();
+			Glib::ustring::const_iterator b = str.begin();
+			while (Glib::Unicode::isspace(*b)) b++;
+			Glib::ustring::const_iterator e = str.end();
+			while (Glib::Unicode::isspace(*--e)) ;
+			e++;
+			return Glib::ustring(b, e);
+		}
+	private:
+		Variable string;
+};
+DECLARE_COMPONENT_LOADER("trim", Trim, VariableLoader);
+
+
-- 
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