--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/imgtools/imglib/boostlibrary/boost/date_time/date_parsing.hpp Mon May 10 19:54:49 2010 +0100
@@ -0,0 +1,300 @@
+#ifndef _DATE_TIME_DATE_PARSING_HPP___
+#define _DATE_TIME_DATE_PARSING_HPP___
+
+/* Copyright (c) 2002,2003,2005 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, Bart Garst
+ * $Date: 2008-11-23 06:13:35 -0500 (Sun, 23 Nov 2008) $
+ */
+
+#include <string>
+#include <iterator>
+#include <algorithm>
+#include <boost/tokenizer.hpp>
+#include <boost/lexical_cast.hpp>
+#include <boost/date_time/compiler_config.hpp>
+#include <boost/date_time/parse_format_base.hpp>
+
+#if defined(BOOST_DATE_TIME_NO_LOCALE)
+#include <cctype> // ::tolower(int)
+#else
+#include <locale> // std::tolower(char, locale)
+#endif
+
+namespace boost {
+namespace date_time {
+
+ //! A function to replace the std::transform( , , ,tolower) construct
+ /*! This function simply takes a string, and changes all the characters
+ * in that string to lowercase (according to the default system locale).
+ * In the event that a compiler does not support locales, the old
+ * C style tolower() is used.
+ */
+ inline
+ std::string
+ convert_to_lower(std::string inp)
+ {
+#if !defined(BOOST_DATE_TIME_NO_LOCALE)
+ const std::locale loc(std::locale::classic());
+#endif
+ std::string::size_type i = 0, n = inp.length();
+ for (; i < n; ++i) {
+ inp[i] =
+#if defined(BOOST_DATE_TIME_NO_LOCALE)
+ static_cast<char>(std::tolower(inp[i]));
+#else
+ // tolower and others were brought in to std for borland >= v564
+ // in compiler_config.hpp
+ std::tolower(inp[i], loc);
+#endif
+ }
+ return inp;
+ }
+
+ //! Helper function for parse_date.
+ /* Used by-value parameter because we change the string and may
+ * want to preserve the original argument */
+ template<class month_type>
+ inline unsigned short
+ month_str_to_ushort(std::string const& s) {
+ if((s.at(0) >= '0') && (s.at(0) <= '9')) {
+ return boost::lexical_cast<unsigned short>(s);
+ }
+ else {
+ std::string str = convert_to_lower(s);
+ typename month_type::month_map_ptr_type ptr = month_type::get_month_map_ptr();
+ typename month_type::month_map_type::iterator iter = ptr->find(str);
+ if(iter != ptr->end()) { // required for STLport
+ return iter->second;
+ }
+ }
+ return 13; // intentionally out of range - name not found
+ }
+
+ //! Find index of a string in either of 2 arrays
+ /*! find_match searches both arrays for a match to 's'. Both arrays
+ * must contain 'size' elements. The index of the match is returned.
+ * If no match is found, 'size' is returned.
+ * Ex. "Jan" returns 0, "Dec" returns 11, "Tue" returns 2.
+ * 'size' can be sent in with: greg_month::max() (which 12),
+ * greg_weekday::max() + 1 (which is 7) or date_time::NumSpecialValues */
+ template<class charT>
+ short find_match(const charT* const* short_names,
+ const charT* const* long_names,
+ short size,
+ const std::basic_string<charT>& s) {
+ for(short i = 0; i < size; ++i){
+ if(short_names[i] == s || long_names[i] == s){
+ return i;
+ }
+ }
+ return size; // not-found, return a value out of range
+ }
+
+ //! Generic function to parse a delimited date (eg: 2002-02-10)
+ /*! Accepted formats are: "2003-02-10" or " 2003-Feb-10" or
+ * "2003-Feburary-10"
+ * The order in which the Month, Day, & Year appear in the argument
+ * string can be accomodated by passing in the appropriate ymd_order_spec
+ */
+ template<class date_type>
+ date_type
+ parse_date(const std::string& s, int order_spec = ymd_order_iso) {
+ std::string spec_str;
+ if(order_spec == ymd_order_iso) {
+ spec_str = "ymd";
+ }
+ else if(order_spec == ymd_order_dmy) {
+ spec_str = "dmy";
+ }
+ else { // (order_spec == ymd_order_us)
+ spec_str = "mdy";
+ }
+
+ typedef typename date_type::year_type year_type;
+ typedef typename date_type::month_type month_type;
+ unsigned pos = 0;
+ unsigned short year(0), month(0), day(0);
+ typedef typename std::basic_string<char>::traits_type traits_type;
+ typedef boost::char_separator<char, traits_type> char_separator_type;
+ typedef boost::tokenizer<char_separator_type,
+ std::basic_string<char>::const_iterator,
+ std::basic_string<char> > tokenizer;
+ typedef boost::tokenizer<char_separator_type,
+ std::basic_string<char>::const_iterator,
+ std::basic_string<char> >::iterator tokenizer_iterator;
+ // may need more delimiters, these work for the regression tests
+ const char sep_char[] = {',','-','.',' ','/','\0'};
+ char_separator_type sep(sep_char);
+ tokenizer tok(s,sep);
+ for(tokenizer_iterator beg=tok.begin();
+ beg!=tok.end() && pos < spec_str.size();
+ ++beg, ++pos) {
+ switch(spec_str.at(pos)) {
+ case 'y':
+ {
+ year = boost::lexical_cast<unsigned short>(*beg);
+ break;
+ }
+ case 'm':
+ {
+ month = month_str_to_ushort<month_type>(*beg);
+ break;
+ }
+ case 'd':
+ {
+ day = boost::lexical_cast<unsigned short>(*beg);
+ break;
+ }
+ } //switch
+ }
+ return date_type(year, month, day);
+ }
+
+ //! Generic function to parse undelimited date (eg: 20020201)
+ template<class date_type>
+ date_type
+ parse_undelimited_date(const std::string& s) {
+ int offsets[] = {4,2,2};
+ int pos = 0;
+ typedef typename date_type::year_type year_type;
+ //typename date_type::ymd_type ymd((year_type::min)(),1,1);
+ unsigned short y = 0, m = 0, d = 0;
+
+ /* The two bool arguments state that parsing will not wrap
+ * (only the first 8 characters will be parsed) and partial
+ * strings will not be parsed.
+ * Ex:
+ * "2005121" will parse 2005 & 12, but not the "1" */
+ boost::offset_separator osf(offsets, offsets+3, false, false);
+
+ typedef typename boost::tokenizer<boost::offset_separator,
+ std::basic_string<char>::const_iterator,
+ std::basic_string<char> > tokenizer_type;
+ tokenizer_type tok(s, osf);
+ for(typename tokenizer_type::iterator ti=tok.begin(); ti!=tok.end();++ti) {
+ unsigned short i = boost::lexical_cast<unsigned short>(*ti);
+ switch(pos) {
+ case 0: y = i; break;
+ case 1: m = i; break;
+ case 2: d = i; break;
+ }
+ pos++;
+ }
+ return date_type(y,m,d);
+ }
+
+ //! Helper function for 'date gregorian::from_stream()'
+ /*! Creates a string from the iterators that reference the
+ * begining & end of a char[] or string. All elements are
+ * used in output string */
+ template<class date_type, class iterator_type>
+ inline
+ date_type
+ from_stream_type(iterator_type& beg,
+ iterator_type& end,
+ char)
+ {
+ std::ostringstream ss;
+ while(beg != end) {
+ ss << *beg++;
+ }
+ return parse_date<date_type>(ss.str());
+ }
+
+ //! Helper function for 'date gregorian::from_stream()'
+ /*! Returns the first string found in the stream referenced by the
+ * begining & end iterators */
+ template<class date_type, class iterator_type>
+ inline
+ date_type
+ from_stream_type(iterator_type& beg,
+ iterator_type& /* end */,
+ std::string)
+ {
+ return parse_date<date_type>(*beg);
+ }
+
+ /* I believe the wchar stuff would be best elsewhere, perhaps in
+ * parse_date<>()? In the mean time this gets us started... */
+ //! Helper function for 'date gregorian::from_stream()'
+ /*! Creates a string from the iterators that reference the
+ * begining & end of a wstring. All elements are
+ * used in output string */
+ template<class date_type, class iterator_type>
+ inline
+ date_type from_stream_type(iterator_type& beg,
+ iterator_type& end,
+ wchar_t)
+ {
+ std::ostringstream ss;
+ while(beg != end) {
+#if !defined(BOOST_DATE_TIME_NO_LOCALE)
+ ss << std::use_facet<std::ctype<wchar_t> >(std::locale()).narrow(*beg++, 'X'); // 'X' will cause exception to be thrown
+#else
+ ss << ss.narrow(*beg++, 'X');
+#endif
+ }
+ return parse_date<date_type>(ss.str());
+ }
+#ifndef BOOST_NO_STD_WSTRING
+ //! Helper function for 'date gregorian::from_stream()'
+ /*! Creates a string from the first wstring found in the stream
+ * referenced by the begining & end iterators */
+ template<class date_type, class iterator_type>
+ inline
+ date_type
+ from_stream_type(iterator_type& beg,
+ iterator_type& /* end */,
+ std::wstring) {
+ std::wstring ws = *beg;
+ std::ostringstream ss;
+ std::wstring::iterator wsb = ws.begin(), wse = ws.end();
+ while(wsb != wse) {
+#if !defined(BOOST_DATE_TIME_NO_LOCALE)
+ ss << std::use_facet<std::ctype<wchar_t> >(std::locale()).narrow(*wsb++, 'X'); // 'X' will cause exception to be thrown
+#else
+ ss << ss.narrow(*wsb++, 'X'); // 'X' will cause exception to be thrown
+#endif
+ }
+ return parse_date<date_type>(ss.str());
+ }
+#endif // BOOST_NO_STD_WSTRING
+#if (defined(BOOST_MSVC) && (_MSC_VER < 1300))
+ // This function cannot be compiled with MSVC 6.0 due to internal compiler shorcomings
+#else
+ //! function called by wrapper functions: date_period_from_(w)string()
+ template<class date_type, class charT>
+ period<date_type, typename date_type::duration_type>
+ from_simple_string_type(const std::basic_string<charT>& s){
+ typedef typename std::basic_string<charT>::traits_type traits_type;
+ typedef typename boost::char_separator<charT, traits_type> char_separator;
+ typedef typename boost::tokenizer<char_separator,
+ typename std::basic_string<charT>::const_iterator,
+ std::basic_string<charT> > tokenizer;
+ const charT sep_list[4] = {'[','/',']','\0'};
+ char_separator sep(sep_list);
+ tokenizer tokens(s, sep);
+ typename tokenizer::iterator tok_it = tokens.begin();
+ std::basic_string<charT> date_string = *tok_it;
+ // get 2 string iterators and generate a date from them
+ typename std::basic_string<charT>::iterator date_string_start = date_string.begin(),
+ date_string_end = date_string.end();
+ typedef typename std::iterator_traits<typename std::basic_string<charT>::iterator>::value_type value_type;
+ date_type d1 = from_stream_type<date_type>(date_string_start, date_string_end, value_type());
+ date_string = *(++tok_it); // next token
+ date_string_start = date_string.begin(), date_string_end = date_string.end();
+ date_type d2 = from_stream_type<date_type>(date_string_start, date_string_end, value_type());
+ return period<date_type, typename date_type::duration_type>(d1, d2);
+ }
+#endif
+
+} } //namespace date_time
+
+
+
+
+#endif
+