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Jose Caban
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extern/stdcxx/4.2.1/examples/manual/time_put.cpp
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extern/stdcxx/4.2.1/examples/manual/time_put.cpp
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/**************************************************************************
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*
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* time_put.cpp - Example program for the std::time_put facet.
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*
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* $Id: time_put.cpp 515674 2007-03-07 18:12:24Z sebor $
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*
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***************************************************************************
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* permissions and limitations under the License.
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*
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* Copyright 1998-2006 Rogue Wave Software.
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*
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**************************************************************************/
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// NOTE: due to a SunPro bug, <ctime> must preceed <locale> (see PR #26255)
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#include <ctime> // for struct tm
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#include <exception> // for exception
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#include <iostream> // for cout, endl
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#include <locale> // for locale, time_put
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#include <sstream> // for ostringstream
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#include <examples.h>
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int main (int argc, char *argv[])
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{
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// zero-out all members (including any non-standard ones)
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std::tm t = std::tm ();
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// assign individual members, being careful to avoid relying
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// on the implementation-defined layout of the struct
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t.tm_sec = 56; // seconds
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t.tm_min = 34; // minutes
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t.tm_hour = 14; // hours (i.e., 2 PM)
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t.tm_mday = 3; // day of month
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t.tm_mon = 1; // month (February)
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t.tm_year = 84; // years since 1900 (i.e., 1984)
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t.tm_yday = 33; // day of the year
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t.tm_wday = 5; // Sunday-based weekday (Friday)
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t.tm_isdst = 0; // Daylight Saving Time
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// array of all supported conversion specifiers
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static const struct {
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// const below commented out to avoid compiler warnings
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// such as HP aCC's Warning 578: A class member may not
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// be a const array since there is no way to initialize
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// such a member.
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/* const */ char spec [4]; // specifier
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/* const */ char desc [40]; // description
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} fmt[] = {
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// plain (unmodified) conversion specifiers
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{ "%a", "abbreviated weekday name" },
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{ "%A", "full weekday name" },
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{ "%b", "abbreviated month name" },
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{ "%B", "full month name" },
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{ "%c", "date and time" },
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{ "%C", "two-digit year [00,99]" },
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{ "%d", "month number [01,31]" },
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{ "%D", "date as \"%m/%d/%y\"" },
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{ "%e", "month number [ 1,31]" },
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{ "%F", "date as \"%Y-%m-%d\"" },
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{ "%g", "week-based year [00,99]" },
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{ "%G", "week-based year" },
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{ "%h", "same as \"%b\"" },
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{ "%H", "hour [00-23]" },
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{ "%I", "hour [01-12]" },
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{ "%j", "day of the year [001,366]" },
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{ "%k", "hour [ 0,23]" },
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{ "%l", "hour [ 1,12]" },
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{ "%m", "month number [01,12]" },
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{ "%M", "minute [00,59]" },
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{ "%n", "newline character" },
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{ "%p", "a.m. or p.m. equivalent" },
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{ "%r", "AM/PM time" },
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{ "%R", "24-hour time" },
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{ "%S", "second [00,60]" },
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{ "%t", "tab character" },
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{ "%T", "time as \"%H:%M:%S\"" },
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{ "%u", "Monday-based weekday [1,7]" },
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{ "%U", "week number [00,53]" },
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{ "%V", "week numver [01,53]" },
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{ "%w", "weekday [0,6]" },
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{ "%W", "week number [00,53]" },
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{ "%x", "date" },
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{ "%X", "time" },
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{ "%y", "two-digit year [00,99]" },
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{ "%Y", "year" },
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{ "%z", "offset from UTC" },
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{ "%Z", "time zone" },
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{ "%%", "percent character" },
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// modified conversion specifiers
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{ "%Ec", "" },
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{ "%EC", "" },
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{ "%Ex", "" },
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{ "%EX", "" },
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{ "%Ey", "" },
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{ "%EY", "" },
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{ "%Od", "" },
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{ "%Oe", "" },
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{ "%OH", "" },
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{ "%OI", "" },
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{ "%Om", "" },
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{ "%OM", "" },
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{ "%OS", "" },
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{ "%Ou", "" },
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{ "%OU", "" },
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{ "%OV", "" },
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{ "%Ow", "" },
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{ "%OW", "" },
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{ "%Oy", "" }
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};
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if (1 < argc) {
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try {
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// imbue the locale specified by the argument in cout
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std::cout.imbue (std::locale (argv [1]));
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}
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catch (std::exception &ex) {
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// print out the reason for the failure and exit
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std::cerr << ex.what () << '\n';
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return 1;
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}
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}
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// retrieve the time_put facet installed in cout
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const std::time_put<char> &tput =
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std::use_facet<std::time_put<char> >(std::cout.getloc ());
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// left-justify text
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std::cout.setf (std::cout.left);
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// print out the time value formatted according to each
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// of the conversion specifiers defined above
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for (std::size_t i = 0; i != sizeof fmt / sizeof *fmt; ++i) {
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const char* const spec = fmt [i].spec;
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std::ostringstream tmp;
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// format the directive, in quotes, in a temporary stringstream
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tmp << '"' << spec << '"';
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// format the quoted directive in a field of the given width
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std::cout << " ";
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std::cout.width (8);
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std::cout << tmp.str ();
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// clear the temporary stringstream
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tmp.str ("");
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tmp << '"';
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if ('n' == spec [1])
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tmp << "\\n";
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else if ('t' == spec [1])
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tmp << "\\t";
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else
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tput.put (std::ostreambuf_iterator<char>(tmp.rdbuf ()),
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std::cout, '\0', &t, spec,
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spec + std::char_traits<char>::length (spec));
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tmp << '"';
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// format the string in a field of the given width
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std::cout.width (32);
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std::cout << tmp.str ();
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// clear the temporary stringstream
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tmp.str ("");
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const char* const d = spec + 1 + ('E' == *spec || 'O' == *spec);
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if ('c' == *d || 'r' == *d || 'x' == *d || 'X' == *d) {
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if (*fmt [i].desc) {
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// format the description of the directive
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tmp << fmt [i].desc << " (";
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}
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tmp << "\"";
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// extension of this implementation:
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// for %c, %r, %x, and %X, write out the formatting
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// string that the conversion specifier expands to
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tput.put (std::ostreambuf_iterator<char>(tmp.rdbuf ()),
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std::cout, '\0', 0, spec,
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spec + std::char_traits<char>::length (spec));
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tmp << "\"";
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if (*fmt [i].desc)
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tmp << ')';
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}
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else if (*fmt [i].desc) {
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// format the description of the directive
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tmp << fmt [i].desc;
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}
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std::cout << tmp.str () << '\n';
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}
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return 0;
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}
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