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/* ** Author: Samuel R. Blackburn (http://www.codeproject.com/library/wfc.asp) ** Internet: wfc@pobox.com ** ** You can use it any way you like as long as you don't try to sell it. ** ** Any attempt to sell WFC in source code form must have the permission ** of the original author. You can produce commercial executables with ** WFC but you can't sell WFC. ** ** Copyright, 2000, Samuel R. Blackburn ** ** $Workfile: wfc_parse_iso_8601_string.cpp $ ** $Revision: 7 $ ** $Modtime: 1/24/00 6:11p $ ** $Reuse Tracing Code: 1 $ */
/****************************************************************************/ /** **/ /** Modified
2005 by Diodia Software (http://www.diodia.com/) **/ /**
**/ /****************************************************************************/ #include "stdafx.h"
#include "RssHelpers.h"
static BOOL __parse_ymdhms( LPCTSTR time_string, int& year, int& month, int& day, int& hours, int& minutes, int& seconds, TCHAR& offset_character, int& offset_hours, int& offset_minutes ) { // Here's a sample ISO8601 date string // // 1969-07-20T22:56:15-04:00
// Do a little idiot checking
if ( time_string == NULL ) return( FALSE );
// Start with some believable defaults
year = 0; month = 1; day = 1; hours = 0; minutes = 0; seconds = 0; offset_character = TEXT( 'Z' ); offset_hours = 0; offset_minutes = 0;
// We were passed a pointer, don't trust it
try { if ( _tcslen( time_string ) < 4 ) { // There ain't enough characters to even attempt to parse return( FALSE ); }
// OK, let's start parsing
if ( _istdigit( time_string[ 0 ] ) == 0 ) { // First character is not a digit return( FALSE ); }
if ( _istdigit( time_string[ 1 ] ) == 0 ) { // Second character is not a digit return( FALSE ); }
if ( _istdigit( time_string[ 2 ] ) == 0 ) { // Third character is not a digit" return( FALSE ); }
if ( _istdigit( time_string[ 3 ] ) == 0 ) { // Fourth character is not a digit return( FALSE ); }
// If we get here, it means we've got 4 good digits
TCHAR temp_string[ 5 ];
temp_string[ 0 ] = time_string[ 0 ]; temp_string[ 1 ] = time_string[ 1 ]; temp_string[ 2 ] = time_string[ 2 ]; temp_string[ 3 ] = time_string[ 3 ]; temp_string[ 4 ] = 0x00;
year = _ttoi( temp_string );
DWORD index = 4;
// index should be pointing here // | // v // 1969-07-20T22:56:15-04:00
if ( time_string[ index ] == 0x00 ) { // We're at the end of the string
return( TRUE ); }
if ( time_string[ index ] != TEXT( '-' ) ) { // The separator between year and month is not - return( FALSE ); }
index++;
// index should be pointing here // | // v // 1969-07-20T22:56:15-04:00
if ( time_string[ index ] == 0x00 ) { // We're at the end of the string return( TRUE ); }
if ( _istdigit( time_string[ index ] ) == 0 ) { // First digit of month field isn't a digit at all return( FALSE ); }
index++;
// index should be pointing here // | // v // 1969-07-20T22:56:15-04:00
// This test is safe because we could be sitting on a NULL
if ( _istdigit( time_string[ index ] ) == 0 ) { // Second digit of month field isn't a digit at all return( FALSE ); }
temp_string[ 0 ] = time_string[ index - 1 ]; temp_string[ 1 ] = time_string[ index ]; temp_string[ 2 ] = 0x00;
month = _ttoi( temp_string );
// Do a little idiot proofing
if ( month < 1 || month > 12 ) { // Funky month return( FALSE ); }
index++;
// index should be pointing here // | // v // 1969-07-20T22:56:15-04:00
if ( time_string[ index ] == 0x00 ) { return( TRUE ); }
if ( time_string[ index ] != TEXT( '-' ) ) { // The separator between month and day fields is not - return( FALSE ); }
index++;
// index should be pointing here // | // v // 1969-07-20T22:56:15-04:00
if ( time_string[ index ] == 0x00 ) { // Odd, but not illegal return( TRUE ); }
if ( _istdigit( time_string[ index ] ) == 0 ) { // First digit of day field isn't a digit at all return( FALSE ); }
index++;
// index should be pointing here // | // v // 1969-07-20T22:56:15-04:00
// This test is safe because we could be sitting on a NULL
if ( _istdigit( time_string[ index ] ) == 0 ) { // Second digit of month field isn't a digit at all return( FALSE ); }
temp_string[ 0 ] = time_string[ index - 1 ]; temp_string[ 1 ] = time_string[ index ];
// We don't need to set temp_string[ 2 ] because we did that at line 158 above
day = _ttoi( temp_string );
// Do a very little bit of error checking
if ( day < 1 || day > 31 ) { // Funky day return( FALSE ); }
index++;
// index should be pointing here // | // v // 1969-07-20T22:56:15-04:00
if ( time_string[ index ] == 0x00 ) { // Odd, but not illegal return( TRUE ); }
if ( time_string[ index ] != TEXT( 'T' ) ) { // Separator between date and time ain't T return( FALSE ); }
index++;
// index should be pointing here // | // v // 1969-07-20T22:56:15-04:00
if ( time_string[ index ] == 0x00 ) { // Odd, but not illegal return( TRUE ); }
if ( _istdigit( time_string[ index ] ) == 0 ) { // First digit of hours field isn't a digit at all return( FALSE ); }
index++;
// index should be pointing here // | // v // 1969-07-20T22:56:15-04:00
// This test is safe because we could be sitting on a NULL
if ( _istdigit( time_string[ index ] ) == 0 ) { // Second digit of month field isn't a digit at all return( FALSE ); }
temp_string[ 0 ] = time_string[ index - 1 ]; temp_string[ 1 ] = time_string[ index ];
// We don't need to set temp_string[ 2 ] because we did that at line 158 above
hours = _ttoi( temp_string );
index++;
// index should be pointing here // | // v // 1969-07-20T22:56:15-04:00
if ( time_string[ index ] == 0x00 ) { // Odd, but not illegal return( TRUE ); }
if ( time_string[ index ] != TEXT( ':' ) ) { // Separator between hours and minutes ain't : return( FALSE ); }
index++;
// index should be pointing here // | // v // 1969-07-20T22:56:15-04:00
if ( time_string[ index ] == 0x00 ) { // Odd, but not illegal return( TRUE ); }
if ( _istdigit( time_string[ index ] ) == 0 ) { // First digit of time ain't no digit return( FALSE ); }
index++;
// index should be pointing here // | // v // 1969-07-20T22:56:15-04:00
if ( _istdigit( time_string[ index ] ) == 0 ) { // First digit of time ain't no digit return( FALSE ); }
temp_string[ 0 ] = time_string[ index - 1 ]; temp_string[ 1 ] = time_string[ index ];
minutes = _ttoi( temp_string );
index++;
// index should be pointing here // | // v // 1969-07-20T22:56:15-04:00
if ( time_string[ index ] == 0x00 ) { return( TRUE ); }
if ( time_string[ index ] != TEXT( ':' ) ) { // Separator between minutes and seconds ain't : return( FALSE ); }
index++;
// index should be pointing here // | // v // 1969-07-20T22:56:15-04:00
if ( time_string[ index ] == 0x00 ) { // Odd, but not illegal return( TRUE ); }
if ( _istdigit( time_string[ index ] ) == 0 ) { // First digit of seconds ain't no digit return( FALSE ); }
index++;
// index should be pointing here // | // v // 1969-07-20T22:56:15-04:00
if ( _istdigit( time_string[ index ] ) == 0 ) { // Second digit of seconds ain't no digit return( FALSE ); }
temp_string[ 0 ] = time_string[ index - 1 ]; temp_string[ 1 ] = time_string[ index ];
seconds = _ttoi( temp_string );
index++;
// index should be pointing here // | // v // 1969-07-20T22:56:15-04:00
if ( time_string[ index ] == 0x00 || time_string[ index ] == TEXT( 'Z' ) ) { return( TRUE ); }
// OK, now is the time when parsing gets interesting // The current index may be sitting on a partial second. // Since CTime can't deal with partial seconds, we // will just skip that part entirely.
if ( time_string[ index ] == TEXT( '.' ) ) { index++;
BOOL exit_loop = FALSE;
while( exit_loop == FALSE ) { if ( time_string[ index ] == 0x00 ) { return( TRUE ); }
if ( _istdigit( time_string[ index ] ) == 0 ) { exit_loop = TRUE; } else { index++; } } }
// If we get here, we should be sitting on a Z, + or -
if ( time_string[ index ] == TEXT( 'Z' ) ) { return( TRUE ); }
if ( time_string[ index ] != TEXT( '+' ) && time_string[ index ] != TEXT( '-' ) ) { // Time zone designator ain't beginning with + or - return( FALSE ); }
offset_character = time_string[ index ];
index++;
// index should be pointing here // | // v // 1969-07-20T22:56:15-04:00
if ( _istdigit( time_string[ index ] ) == 0 ) { // first digit of hours offset ain't a digit return( FALSE ); }
index++;
// index should be pointing here // | // v // 1969-07-20T22:56:15-04:00
if ( _istdigit( time_string[ index ] ) == 0 ) { // second digit of hours offset ain't a digit return( FALSE ); }
temp_string[ 0 ] = time_string[ index - 1 ]; temp_string[ 1 ] = time_string[ index ];
offset_hours = _ttoi( temp_string );
index++;
// index should be pointing here // | // v // 1969-07-20T22:56:15-04:00
if ( time_string[ index ] != TEXT( ':' ) ) { // Separator between offset hours and minutes ain't a : return( FALSE ); }
index++;
// index should be pointing here // | // v // 1969-07-20T22:56:15-04:00
if ( _istdigit( time_string[ index ] ) == 0 ) { // First digit of minutes offset ain't a digit return( FALSE ); }
index++;
// index should be pointing here // | // v // 1969-07-20T22:56:15-04:00
if ( _istdigit( time_string[ index ] ) == 0 ) { // Second digit of minutes offset ain't a digit return( FALSE ); }
temp_string[ 0 ] = time_string[ index - 1 ]; temp_string[ 1 ] = time_string[ index ];
offset_minutes = _ttoi( temp_string );
return( TRUE ); } catch( ... ) { return( FALSE ); } }
BOOL wfc_parse_iso_8601_string( LPCTSTR time_string, FILETIME& the_time ) { the_time.dwHighDateTime = 0; the_time.dwLowDateTime = 0;
SYSTEMTIME system_time;
if ( wfc_parse_iso_8601_string( time_string, system_time ) == FALSE ) { return( FALSE ); }
SystemTimeToFileTime(&system_time, &the_time);
return( TRUE ); }
BOOL wfc_parse_iso_8601_string( LPCTSTR time_string, COleDateTime& the_time ) { the_time = COleDateTime( static_cast< time_t >( 0 ) );
// Do a little idiot checking
if ( time_string == NULL ) { // time_string is NULL! return( FALSE ); }
int year = 0; int month = 0; int day = 0; int hours = 0; int minutes = 0; int seconds = 0;
TCHAR offset_character = 0;
int offset_hours = 0; int offset_minutes = 0;
if ( __parse_ymdhms( time_string, year, month, day, hours, minutes, seconds, offset_character, offset_hours, offset_minutes ) == FALSE ) { // Can't parse string return( FALSE ); }
the_time = COleDateTime( year, month, day, hours, minutes, seconds );
if ( offset_character != TEXT( 'Z' ) ) { COleDateTimeSpan time_zone_offset( 0, offset_hours, offset_minutes, 0 );
if ( offset_character == TEXT( '-' ) ) { the_time += time_zone_offset; } else if ( offset_character == TEXT( '+' ) ) { the_time -= time_zone_offset; } }
return( TRUE ); }
BOOL wfc_parse_iso_8601_string( LPCTSTR time_string, SYSTEMTIME& the_time ) {
the_time.wYear = 0; the_time.wMonth = 0; the_time.wDay = 0; the_time.wDayOfWeek = 0; the_time.wHour = 0; the_time.wMinute = 0; the_time.wSecond = 0; the_time.wMilliseconds = 0;
// Do a little idiot checking
if ( time_string == NULL ) { // time_string is NULL! return( FALSE ); }
int year = 0; int month = 0; int day = 0; int hours = 0; int minutes = 0; int seconds = 0;
TCHAR offset_character = 0;
int offset_hours = 0; int offset_minutes = 0;
if ( __parse_ymdhms( time_string, year, month, day, hours, minutes, seconds, offset_character, offset_hours, offset_minutes ) == FALSE ) { // Can't parse string return( FALSE ); }
CTime ole_time = CTime( year, month, day, hours, minutes, seconds );
if ( offset_character != TEXT( 'Z' ) ) { CTimeSpan time_zone_offset( 0, offset_hours, offset_minutes, 0 );
if ( offset_character == TEXT( '-' ) ) { ole_time += time_zone_offset; } else if ( offset_character == TEXT( '+' ) ) { ole_time -= time_zone_offset; } }
ole_time.GetAsSystemTime(the_time);
return( TRUE ); }
BOOL wfc_parse_iso_8601_string( LPCTSTR time_string, CTime& the_time ) { the_time = CTime( static_cast< time_t >( 0 ) );
// Do a little idiot checking
if ( time_string == NULL ) { // time_string is NULL! return( FALSE ); }
int year = 0; int month = 0; int day = 0; int hours = 0; int minutes = 0; int seconds = 0;
TCHAR offset_character = 0;
int offset_hours = 0; int offset_minutes = 0;
if ( __parse_ymdhms( time_string, year, month, day, hours, minutes, seconds, offset_character, offset_hours, offset_minutes ) == FALSE ) { // Can't parse string return( FALSE ); }
the_time = CTime( year, month, day, hours, minutes, seconds );
if ( offset_character != TEXT( 'Z' ) ) { CTimeSpan time_zone_offset( 0, offset_hours, offset_minutes, 0 );
if ( offset_character == TEXT( '-' ) ) { the_time += time_zone_offset; } else if ( offset_character == TEXT( '+' ) ) { the_time -= time_zone_offset; } }
return( TRUE ); }
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Source Files Commands.cpp Context.cpp CreatePath.cpp DateParser.cpp DlgEditFeedC.cpp DlgManageFeedsC.cpp Hook.cpp Iso8601.cpp MsXmlMisc.cpp MsXmlSelect.cpp RegistryNotify.cpp RegistryUtil.cpp RSS.cpp RSS.def RSS.idl RssAction.cpp RssDownloader.cpp RssFeed.cpp RssHelpers.cpp RssInit.cpp RssItem.cpp RssMultiFeed.cpp RssTimer.cpp RssXml.cpp StdAfx.cpp Header Files Commands.h ContextC.h DateParser.h DlgEditFeedC.h DlgManageFeedsC.h Helper.h HookC.h RegistryNotify.h RegistryNotifyC.h Resource.h RssDownloaderC.h RssFeedC.h RssHelpers.h RssItemC.h RssMultiFeedC.h StdAfx.h ThreadObject.h XmlHelpers.h Resource Files about.htm DiodiaLogoSmall.gif logo.bmp manifest.xml read.bmp RSS.rc RSS.rgs ToolBandLayout.xml |
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