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+#ifndef DATE_TIME_STRINGS_FROM_FACET__HPP___
+#define DATE_TIME_STRINGS_FROM_FACET__HPP___
+
+/* Copyright (c) 2004 CrystalClear Software, Inc.
+ * Use, modification and distribution is subject to the
+ * Boost Software License, Version 1.0. (See accompanying
+ * file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
+ * Author: Jeff Garland
+ * $Date: 2012-01-30 21:30:03 -0500 (Mon, 30 Jan 2012) $
+ */
+
+#include <sstream>
+#include <string>
+#include <vector>
+#include <locale>
+
+namespace boost { namespace date_time {
+
+//! This function gathers up all the month strings from a std::locale
+/*! Using the time_put facet, this function creates a collection of
+ * all the month strings from a locale. This is handy when building
+ * custom date parsers or formatters that need to be localized.
+ *
+ *@param charT The type of char to use when gathering typically char
+ * or wchar_t.
+ *@param locale The locale to use when gathering the strings
+ *@param short_strings True(default) to gather short strings,
+ * false for long strings.
+ *@return A vector of strings containing the strings in order. eg:
+ * Jan, Feb, Mar, etc.
+ */
+template<typename charT>
+std::vector<std::basic_string<charT> >
+gather_month_strings(const std::locale& locale, bool short_strings=true)
+{
+ typedef std::basic_string<charT> string_type;
+ typedef std::vector<string_type> collection_type;
+ typedef std::basic_ostringstream<charT> ostream_type;
+ typedef std::ostreambuf_iterator<charT> ostream_iter_type;
+ typedef std::basic_ostringstream<charT> stringstream_type;
+ typedef std::time_put<charT> time_put_facet_type;
+ charT short_fmt[3] = { '%', 'b' };
+ charT long_fmt[3] = { '%', 'B' };
+ collection_type months;
+ string_type outfmt(short_fmt);
+ if (!short_strings) {
+ outfmt = long_fmt;
+ }
+ {
+ //grab the needed strings by using the locale to
+ //output each month
+ const charT* p_outfmt = outfmt.c_str(), *p_outfmt_end = p_outfmt + outfmt.size();
+ tm tm_value = {};
+ for (int m=0; m < 12; m++) {
+ tm_value.tm_mon = m;
+ stringstream_type ss;
+ ostream_iter_type oitr(ss);
+ std::use_facet<time_put_facet_type>(locale).put(oitr, ss, ss.fill(),
+ &tm_value,
+ p_outfmt,
+ p_outfmt_end);
+ months.push_back(ss.str());
+ }
+ }
+ return months;
+}
+
+//! This function gathers up all the weekday strings from a std::locale
+/*! Using the time_put facet, this function creates a collection of
+ * all the weekday strings from a locale starting with the string for
+ * 'Sunday'. This is handy when building custom date parsers or
+ * formatters that need to be localized.
+ *
+ *@param charT The type of char to use when gathering typically char
+ * or wchar_t.
+ *@param locale The locale to use when gathering the strings
+ *@param short_strings True(default) to gather short strings,
+ * false for long strings.
+ *@return A vector of strings containing the weekdays in order. eg:
+ * Sun, Mon, Tue, Wed, Thu, Fri, Sat
+ */
+template<typename charT>
+std::vector<std::basic_string<charT> >
+gather_weekday_strings(const std::locale& locale, bool short_strings=true)
+{
+ typedef std::basic_string<charT> string_type;
+ typedef std::vector<string_type> collection_type;
+ typedef std::basic_ostringstream<charT> ostream_type;
+ typedef std::ostreambuf_iterator<charT> ostream_iter_type;
+ typedef std::basic_ostringstream<charT> stringstream_type;
+ typedef std::time_put<charT> time_put_facet_type;
+ charT short_fmt[3] = { '%', 'a' };
+ charT long_fmt[3] = { '%', 'A' };
+
+ collection_type weekdays;
+
+
+ string_type outfmt(short_fmt);
+ if (!short_strings) {
+ outfmt = long_fmt;
+ }
+ {
+ //grab the needed strings by using the locale to
+ //output each month / weekday
+ const charT* p_outfmt = outfmt.c_str(), *p_outfmt_end = p_outfmt + outfmt.size();
+ tm tm_value = {};
+ for (int i=0; i < 7; i++) {
+ tm_value.tm_wday = i;
+ stringstream_type ss;
+ ostream_iter_type oitr(ss);
+ std::use_facet<time_put_facet_type>(locale).put(oitr, ss, ss.fill(),
+ &tm_value,
+ p_outfmt,
+ p_outfmt_end);
+
+ weekdays.push_back(ss.str());
+ }
+ }
+ return weekdays;
+}
+
+} } //namespace
+
+
+#endif