361 lines
8.4 KiB
C
361 lines
8.4 KiB
C
#include <extend.h>
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#include <set.h>
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#include <ctype.h>
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#include <time.h>
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long greg2julian( long lDay, long lMonth, long lYear )
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{
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long lFactor = ( lMonth < 3 ) ? -1: 0;
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return ( 1461 * ( lFactor + 4800 + lYear ) / 4 ) +
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( ( lMonth - 2 - ( lFactor * 12 ) ) * 367 ) / 12 -
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( 3 * ( ( lYear + 4900 + lFactor ) / 100 ) / 4 ) +
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lDay - 32075;
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}
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void julian2greg( long julian, long * plDay, long * plMonth, long * plYear )
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{
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long U, V, W, X;
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julian += 68569;
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W = ( julian * 4 ) / 146097;
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julian -= ( ( 146097 * W ) + 3 ) / 4;
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X = 4000 * ( julian + 1 ) / 1461001;
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julian -= ( ( 1461 * X ) / 4 ) - 31;
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V = 80 * julian / 2447;
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U = V / 11;
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* plDay = julian - ( 2447 * V / 80 );
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* plMonth = V + 2 - ( U * 12 );
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* plYear = X + U + ( W - 49 ) * 100;
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}
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HARBOUR CTOD( void )
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{
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char * szDate = _parc( 1 );
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int d_value = 0, m_value = 0, y_value = 0;
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int d_pos = 0, m_pos = 0, y_pos = 0;
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int count, digit;
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char szDateFormat[ 9 ];
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for( count = 0; count < strlen (HB_set._SET_DATEFORMAT); count++)
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{
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switch (HB_set._SET_DATEFORMAT [count])
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{
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case 'D':
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case 'd':
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if (d_pos == 0)
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{
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if (m_pos == 0 && y_pos == 0) d_pos = 1;
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else if (m_pos == 0 || y_pos == 0) d_pos = 2;
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else d_pos = 3;
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}
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break;
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case 'M':
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case 'm':
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if (m_pos == 0)
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{
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if (d_pos == 0 && y_pos == 0) m_pos = 1;
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else if (d_pos == 0 || y_pos == 0) m_pos = 2;
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else m_pos = 3;
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}
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break;
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case 'Y':
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case 'y':
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if (y_pos == 0)
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{
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if (m_pos == 0 && d_pos == 0) y_pos = 1;
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else if (m_pos == 0 || d_pos == 0) y_pos = 2;
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else y_pos = 3;
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}
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}
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}
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for( count = 0; count < strlen (szDate); count++)
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{
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digit = szDate [count];
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if (isdigit (digit))
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{
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if (d_pos == 1)
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{
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d_value = (d_value * 10) + digit - '0';
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}
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else if (m_pos == 1)
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{
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m_value = (m_value * 10) + digit - '0';
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}
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else if (y_pos == 1)
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{
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y_value = (y_value * 10) + digit - '0';
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}
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}
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else
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{
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d_pos--;
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m_pos--;
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y_pos--;
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}
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}
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if (y_value < 100)
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{
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count = HB_set._SET_EPOCH % 100;
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digit = HB_set._SET_EPOCH / 100;
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if (y_value >= count) y_value += (digit * 100);
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else y_value += ((digit * 100) + 100);
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}
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sprintf (szDateFormat, "%04i%02i%02i", y_value, m_value, d_value);
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_retds( szDateFormat );
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}
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char * hb_dtoc (char * szDate, char * szDateFormat)
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{
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/* NOTE: szDateFormat must point to a buffer of at least 11 bytes */
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int d_digits = 0, m_digits = 0, y_digits = 0;
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int d_pos = 0, m_pos = 0, y_pos = 0;
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int add_sep, count, digit, delim_1, delim_2, delim_count;
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char szTemp [5];
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delim_count = 0;
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delim_1 = delim_2 = '.';
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for( count = 0; count < strlen (HB_set._SET_DATEFORMAT); count++)
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{
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digit = HB_set._SET_DATEFORMAT [count];
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switch (digit)
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{
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case 'D':
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case 'd':
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d_digits++;
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if (d_pos == 0)
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{
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if (m_pos == 0 && y_pos == 0) d_pos = 1;
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else if (m_pos == 0 || y_pos == 0) d_pos = 2;
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else d_pos = 3;
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}
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break;
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case 'M':
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case 'm':
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m_digits++;
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if (m_pos == 0)
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{
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if (d_pos == 0 && y_pos == 0) m_pos = 1;
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else if (d_pos == 0 || y_pos == 0) m_pos = 2;
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else m_pos = 3;
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}
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break;
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case 'Y':
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case 'y':
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y_digits++;
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if (y_pos == 0)
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{
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if (m_pos == 0 && d_pos == 0) y_pos = 1;
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else if (m_pos == 0 || d_pos == 0) y_pos = 2;
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else y_pos = 3;
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}
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break;
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default:
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delim_count++;
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if (delim_count == 1) delim_1 = digit;
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else if (delim_count == 2) delim_2 = digit;
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break;
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}
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}
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*szDateFormat = 0;
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for (count = 0; count < 3; count++)
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{
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// Insert a converted date element.
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add_sep = 0;
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if (d_pos == 1 && d_digits > 0)
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{
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add_sep = 1;
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while (d_digits > 2)
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{
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strcat (szDateFormat, "0");
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d_digits--;
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}
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if (d_digits == 1)
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{
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szTemp [0] = szDate [7];
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szTemp [1] = 0;
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}
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else
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{
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szTemp [0] = szDate [6];
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szTemp [1] = szDate [7];
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szTemp [2] = 0;
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}
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strcat (szDateFormat, szTemp);
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}
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if (m_pos == 1 && m_digits > 0)
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{
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add_sep = 1;
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while (m_digits > 2)
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{
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strcat (szDateFormat, "0");
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m_digits--;
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}
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if (m_digits == 1)
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{
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szTemp [0] = szDate [5];
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szTemp [1] = 0;
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}
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else
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{
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szTemp [0] = szDate [4];
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szTemp [1] = szDate [5];
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szTemp [2] = 0;
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}
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strcat (szDateFormat, szTemp);
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}
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if (y_pos == 1 && y_digits > 0)
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{
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add_sep = 1;
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while (y_digits > 4)
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{
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strcat (szDateFormat, "0");
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y_digits--;
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}
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if (y_digits == 1)
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{
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szTemp [0] = szDate [3];
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szTemp [1] = 0;
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}
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else if (y_digits == 2)
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{
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szTemp [0] = szDate [2];
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szTemp [1] = szDate [3];
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szTemp [2] = 0;
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}
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else if (y_digits == 3)
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{
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szTemp [0] = szDate [1];
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szTemp [1] = szDate [2];
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szTemp [2] = szDate [3];
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szTemp [3] = 0;
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}
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else
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{
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szTemp [0] = szDate [0];
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szTemp [1] = szDate [1];
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szTemp [2] = szDate [2];
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szTemp [3] = szDate [3];
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szTemp [4] = 0;
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}
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strcat (szDateFormat, szTemp);
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}
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// Insert a date field separator.
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if (add_sep && delim_1)
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{
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szTemp [0] = delim_1;
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szTemp [1] = 0;
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strcat (szDateFormat, szTemp);
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delim_1 = 0;
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}
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else if (add_sep && delim_2)
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{
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szTemp [0] = delim_2;
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szTemp [1] = 0;
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strcat (szDateFormat, szTemp);
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delim_2 = 0;
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}
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// Get ready for the next date element.
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d_pos--;
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m_pos--;
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y_pos--;
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}
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return (szDateFormat);
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}
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HARBOUR DTOC( void )
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{
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char * szDate = _pards( 1 );
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char szDateFormat[ 11 ];
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_retc( hb_dtoc (szDate, szDateFormat) );
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}
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HARBOUR DTOS( void )
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{
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_retc( _pards( 1 ) );
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}
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HARBOUR STOD( void )
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{
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_retds( _parc( 1 ) );
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}
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HARBOUR DAY( void )
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{
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PITEM pDate = _param( 1, IT_DATE );
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long lDay, lMonth, lYear;
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if( pDate )
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{
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julian2greg( pDate->value.lDate, &lDay, &lMonth, &lYear );
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_retni( lDay );
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}
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else
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{
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/* TODO: generate a proper error object and raise an error */
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printf( "not a valid date item from Day()\n" );
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exit( 1 );
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}
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}
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HARBOUR MONTH( void )
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{
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PITEM pDate = _param( 1, IT_DATE );
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long lDay, lMonth, lYear;
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if( pDate )
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{
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julian2greg( pDate->value.lDate, &lDay, &lMonth, &lYear );
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_retni( lMonth );
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}
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else
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{
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/* TODO: generate a proper error object and raise an error */
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printf( "not a valid date item from Day()\n" );
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exit( 1 );
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}
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}
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HARBOUR YEAR( void )
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{
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PITEM pDate = _param( 1, IT_DATE );
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long lDay, lMonth, lYear;
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if( pDate )
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{
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julian2greg( pDate->value.lDate, &lDay, &lMonth, &lYear );
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_retni( lYear );
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}
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else
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{
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/* TODO: generate a proper error object and raise an error */
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printf( "not a valid date item from Day()\n" );
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exit( 1 );
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}
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}
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HARBOUR TIME( void )
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{
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if( _pcount() == 0 )
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{
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time_t t;
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struct tm *oTime;
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char szTime[9];
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time(&t);
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oTime = localtime(&t);
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sprintf(szTime, "%02d:%02d:%02d", oTime->tm_hour, oTime->tm_min,
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oTime->tm_sec);
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_retclen(szTime, 8);
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}
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else
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{
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/* QUESTION: Clipper catches this at compile time! */
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PITEM pError = _errNew();
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_errPutDescription(pError, "Incorrect number of arguments: TIME");
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_errLaunch(pError);
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_errRelease(pError);
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}
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}
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