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📁 ..	-	2025-05-25 12:36
📄 Makefile # Copyright (C) 2016 and later: Unicode, Inc. and others. # License & terms of use: http://www.unicode.org/copyright.html # # Copyright (c) 2000-2002 IBM, Inc. and others # sample code makefile # Usage: # - configure, build, install ICU (make install) # - make sure "icu-config" (in the ICU installed bin directory) is on # the path # - do 'make' in this directory # Name of your target TARGET=datefmt # All object files (C or C++) OBJECTS=main.o util.o # Load in standard makefile definitions include ../defs.mk # the actual rules (this is a simple sample) include ../rules.mk	590 B	2022-04-07 22:41
📄 README.TXT Copyright (C) 2016 and later: Unicode, Inc. and others. License & terms of use: http://www.unicode.org/copyright.html Copyright (c) 2002-2010, International Business Machines Corporation and others. All Rights Reserved. IMPORTANT: This sample was originally intended as an exercise for the ICU Workshop (September 2000). The code currently provided in the solution file is the answer to the exercises, each step can still be found in the 'answers' subdirectory. ** Workshop homepage is: http://www.icu-project.org/docs/workshop_2000/agenda.html #Date/Time/Number Formatting Support 9:30am - 10:30am Alan Liu Topics: 1. What is the date/time support in ICU? 2. What is the timezone support in ICU? 3. What kind of formatting and parsing support is available in ICU, i.e. NumberFormat, DateFormat, MessageFormat? INSTRUCTIONS ------------ This exercise was first developed and tested on ICU release 1.6.0, Win32, Microsoft Visual C++ 6.0. It should work on other ICU releases and other platforms as well. MSVC: Open the file "datefmt.sln" in Microsoft Visual C++. Unix: - Build and install ICU with a prefix, for example '--prefix=/home/srl/ICU' - Set the variable ICU_PREFIX=/home/srl/ICU and use GNU make in this directory. - You may use 'make check' to invoke this sample. PROBLEMS -------- Problem 0: Set up the program, build it, and run it. To start with, the program prints out a list of languages. Problem 1: Basic Date Formatting (Easy) Create a calendar, and use it to get the UDate for June 4, 1999, 0:00 GMT (or any date of your choosing). You will have to create a TimeZone (use the createZone() function already defined in main.cpp) and a Calendar object, and make the calendar use the time zone. Once you have the UDate, create a DateFormat object in each of the languages in the LANGUAGE array, and display the date in that language. Use the DateFormat::createDateInstance() method to create the date formatter. Problem 2: Date Formatting, Specific Time Zone (Medium) To really localize a time display, one can also specify the time zone in which the time should be displayed. For each language, also create different time zones from the TIMEZONE list. To format a date with a specific calendar and zone, you must deal with three objects: a DateFormat, a Calendar, and a TimeZone. Each object must be linked to another in correct sequence: The Calendar must use the TimeZone, and the DateFormat must use the Calendar. DateFormat =uses=> Calendar =uses=> TimeZone Use either setFoo() or adoptFoo() methods, depending on where you want to have ownership. NOTE: It's not always desirable to change the time to a local time zone before display. For instance, if some even occurs at 0:00 GMT on the first of the month, it's probably clearer to just state that. Stating that it occurs at 5:00 PM PDT on the day before in the summer, and 4:00 PM PST on the day before in the winter will just confuse the issue. NOTES ----- To see a list of system TimeZone IDs, use the TimeZone::create- AvailableIDs() methods. Alternatively, look at the file icu/docs/tz.htm. This has a hyperlinked list of current system zones. ANSWERS ------- The exercise includes answers. These are in the "answers" directory, and are numbered 1, 2, etc. If you get stuck and you want to move to the next step, copy the answers file into the main directory in order to proceed. E.g., "main_1.cpp" contains the original "main.cpp" file. "main_2.cpp" contains the "main.cpp" file after problem 1. Etc. Have fun!	3.55 KB	2022-04-07 22:41
📁 answers	-	2025-05-25 12:36
📄 datefmt.sln Microsoft Visual Studio Solution File, Format Version 12.00 # Visual Studio 14 VisualStudioVersion = 14.0.24720.0 MinimumVisualStudioVersion = 10.0.40219.1 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "datefmt", "datefmt.vcxproj", "{6D592DB7-B9C8-4B1B-A1C1-F9A9EB4FD4E4}" EndProject Global GlobalSection(SolutionConfigurationPlatforms) = preSolution Debug\|Win32 = Debug\|Win32 Debug\|x64 = Debug\|x64 Release\|Win32 = Release\|Win32 Release\|x64 = Release\|x64 EndGlobalSection GlobalSection(ProjectConfigurationPlatforms) = postSolution {6D592DB7-B9C8-4B1B-A1C1-F9A9EB4FD4E4}.Debug\|Win32.ActiveCfg = Debug\|Win32 {6D592DB7-B9C8-4B1B-A1C1-F9A9EB4FD4E4}.Debug\|Win32.Build.0 = Debug\|Win32 {6D592DB7-B9C8-4B1B-A1C1-F9A9EB4FD4E4}.Debug\|x64.ActiveCfg = Debug\|x64 {6D592DB7-B9C8-4B1B-A1C1-F9A9EB4FD4E4}.Debug\|x64.Build.0 = Debug\|x64 {6D592DB7-B9C8-4B1B-A1C1-F9A9EB4FD4E4}.Release\|Win32.ActiveCfg = Release\|Win32 {6D592DB7-B9C8-4B1B-A1C1-F9A9EB4FD4E4}.Release\|Win32.Build.0 = Release\|Win32 {6D592DB7-B9C8-4B1B-A1C1-F9A9EB4FD4E4}.Release\|x64.ActiveCfg = Release\|x64 {6D592DB7-B9C8-4B1B-A1C1-F9A9EB4FD4E4}.Release\|x64.Build.0 = Release\|x64 EndGlobalSection GlobalSection(SolutionProperties) = preSolution HideSolutionNode = FALSE EndGlobalSection EndGlobal	1.25 KB	2022-04-07 22:41
📄 datefmt.vcxproj <?xml version="1.0" encoding="utf-8"?> <Project DefaultTargets="Build" ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003"> <PropertyGroup Label="Globals"> <ProjectGuid>{6D592DB7-B9C8-4B1B-A1C1-F9A9EB4FD4E4}</ProjectGuid> </PropertyGroup> <PropertyGroup Label="Configuration"> <ConfigurationType>Application</ConfigurationType> <UseOfMfc>false</UseOfMfc> <CharacterSet>MultiByte</CharacterSet> </PropertyGroup> <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" /> <!-- The following import will include the 'default' configuration options for VS projects. --> <Import Project="..\..\allinone\Build.Windows.ProjectConfiguration.props" /> <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" /> <ImportGroup Label="ExtensionSettings"> </ImportGroup> <PropertyGroup Label="UserMacros" /> <PropertyGroup> <_ProjectFileVersion>10.0.30319.1</_ProjectFileVersion> <OutDir 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📄 datefmt.vcxproj.filters <?xml version="1.0" encoding="utf-8"?> <Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003"> <ItemGroup> <Filter Include="Source Files"> <UniqueIdentifier>{a5cbb044-7694-4d1d-98c1-bb578ee7f1ea}</UniqueIdentifier> <Extensions>cpp;c;cxx;rc;def;r;odl;idl;hpj;bat</Extensions> </Filter> <Filter Include="Header Files"> <UniqueIdentifier>{aadf5a92-1812-45ce-90a0-e9db3945d7c5}</UniqueIdentifier> <Extensions>h;hpp;hxx;hm;inl</Extensions> </Filter> <Filter Include="Resource Files"> <UniqueIdentifier>{9eff3ddc-6822-4225-81fc-a867b9e592c0}</UniqueIdentifier> <Extensions>ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe</Extensions> </Filter> </ItemGroup> <ItemGroup> <ClCompile Include="main.cpp"> <Filter>Source Files</Filter> </ClCompile> <ClCompile Include="util.cpp"> <Filter>Source Files</Filter> </ClCompile> </ItemGroup> </Project>	967 B	2022-04-07 22:41
📄 main.cpp /************************************************************************* * © 2016 and later: Unicode, Inc. and others. * License & terms of use: http://www.unicode.org/copyright.html *********************************************************************** *********************************************************************** * COPYRIGHT: * Copyright (c) 1999-2003, International Business Machines Corporation and * others. All Rights Reserved. ***********************************************************************/ #include "unicode/unistr.h" #include "unicode/calendar.h" #include "unicode/datefmt.h" #include <stdio.h> #include <stdlib.h> #include "util.h" using namespace icu; / * If the ID supplied to TimeZone is not a valid system ID, * TimeZone::createTimeZone() will return a GMT zone object. In order * to detect this error, we check the ID of the returned zone against * the ID we requested. If they don't match, we fail with an error. / TimeZone createZone(const UnicodeString& id) { UnicodeString str; TimeZone* zone = TimeZone::createTimeZone(id); if (zone->getID(str) != id) { delete zone; printf("Error: TimeZone::createTimeZone("); uprintf(id); printf(") returned zone with ID "); uprintf(str); printf("\n"); exit(1); } return zone; } int main(int argc, char *argv) { Calendar cal; TimeZone zone; DateFormat fmt; UErrorCode status = U_ZERO_ERROR; UnicodeString str; UDate date; // The languages in which we will display the date static const char* LANGUAGE[] = { "en", "de", "fr" }; static const int32_t N_LANGUAGE = sizeof(LANGUAGE)/sizeof(LANGUAGE[0]); // The time zones in which we will display the time static const char* TIMEZONE[] = { "America/Los_Angeles", "America/New_York", "Europe/Paris", "Europe/Berlin" }; static const int32_t N_TIMEZONE = sizeof(TIMEZONE)/sizeof(TIMEZONE[0]); // Create a calendar cal = Calendar::createInstance(status); check(status, "Calendar::createInstance"); zone = createZone("GMT"); // Create a GMT zone cal->adoptTimeZone(zone); cal->clear(); cal->set(1999, Calendar::JUNE, 4); date = cal->getTime(status); check(status, "Calendar::getTime"); for (int32_t i=0; i<N_LANGUAGE; ++i) { Locale loc(LANGUAGE[i]); // Create a formatter for DATE and TIME fmt = DateFormat::createDateTimeInstance( DateFormat::kFull, DateFormat::kFull, loc); for (int32_t j=0; j<N_TIMEZONE; ++j) { cal->adoptTimeZone(createZone(TIMEZONE[j])); fmt->setCalendar(*cal); // Format the date str.remove(); fmt->format(date, str, status); // Display the formatted date string printf("Date (%s, %s): ", LANGUAGE[i], TIMEZONE[j]); uprintf(escape(str)); printf("\n\n"); } delete fmt; } printf("Exiting successfully\n"); return 0; }	3.06 KB	2022-04-07 22:41
📄 util.cpp /******************************************************************** * © 2016 and later: Unicode, Inc. and others. * License & terms of use: http://www.unicode.org/copyright.html *********************************************************************** *********************************************************************** * COPYRIGHT: * Copyright (c) 1999-2003, International Business Machines Corporation and * others. All Rights Reserved. ************************************************************************/ #include "unicode/unistr.h" #include <stdio.h> #include <stdlib.h> using namespace icu; // Verify that a UErrorCode is successful; exit(1) if not void check(UErrorCode& status, const char msg) { if (U_FAILURE(status)) { printf("ERROR: %s (%s)\n", u_errorName(status), msg); exit(1); } // printf("Ok: %s\n", msg); } // Append a hex string to the target static UnicodeString& appendHex(uint32_t number, int8_t digits, UnicodeString& target) { static const UnicodeString DIGIT_STRING("0123456789ABCDEF"); while (digits > 0) { target += DIGIT_STRING[(number >> ((--digits) * 4)) & 0xF]; } return target; } // Replace nonprintable characters with unicode escapes UnicodeString escape(const UnicodeString &source) { int32_t i; UnicodeString target; target += "\""; for (i=0; i<source.length(); ++i) { UChar ch = source[i]; if (ch < 0x09 \|\| (ch > 0x0A && ch < 0x20) \|\| ch > 0x7E) { target += "\\u"; appendHex(ch, 4, target); } else { target += ch; } } target += "\""; return target; } // Print the given string to stdout void uprintf(const UnicodeString &str) { char buf = 0; int32_t len = str.length(); // int32_t bufLen = str.extract(0, len, buf); // Preflight / Preflighting seems to be broken now, so assume 1-1 conversion, plus some slop. / int32_t bufLen = len + 16; int32_t actualLen; buf = new char[bufLen + 1]; actualLen = str.extract(0, len, buf/, bufLen*/); // Default codepage conversion buf[actualLen] = 0; printf("%s", buf); delete[] buf; }	2.24 KB	2022-04-07 22:41
📄 util.h /******************************************************************** * © 2016 and later: Unicode, Inc. and others. * License & terms of use: http://www.unicode.org/copyright.html *********************************************************************** *********************************************************************** * COPYRIGHT: * Copyright (c) 1999-2003, International Business Machines Corporation and * others. All Rights Reserved. ************************************************************************/ #include "unicode/unistr.h" using namespace icu; // Verify that a UErrorCode is successful; exit(1) if not void check(UErrorCode& status, const char msg); // Replace nonprintable characters with unicode escapes UnicodeString escape(const UnicodeString &source); // Print the given string to stdout void uprintf(const UnicodeString &str);	879 B	2022-04-07 22:41

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