--- /dev/null
+/* typecast_mxdatetime.c - date and time typecasting functions to mx types
+ *
+ * Copyright (C) 2001-2003 Federico Di Gregorio <fog@debian.org>
+ *
+ * This file is part of the psycopg module.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2,
+ * or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include "mxDateTime.h"
+
+/* the pointer to the mxDateTime API is initialized by the module init code,
+ we just need to grab it */
+extern mxDateTimeModule_APIObject *mxDateTimeP;
+
+/** DATE - cast a date into mx.DateTime python object **/
+
+static PyObject *
+typecast_MXDATE_cast(char *str, int len, PyObject *curs)
+{
+ int n, y=0, m=0, d=0;
+ int hh=0, mm=0, ss=0, us=0, tz=0;
+ char *tp = NULL;
+
+ if (str == NULL) {Py_INCREF(Py_None); return Py_None;}
+
+ Dprintf("typecast_MXDATE_cast: s = %s", str);
+
+ /* check for infinity */
+ if (!strcmp(str, "infinity") || !strcmp(str, "-infinity")) {
+ if (str[0] == '-') {
+ return mxDateTimeP->DateTime_FromDateAndTime(-999998,1,1, 0,0,0);
+ }
+ else {
+ return mxDateTimeP->DateTime_FromDateAndTime(999999,12,31, 0,0,0);
+ }
+ }
+
+ n = typecast_parse_date(str, &tp, &len, &y, &m, &d);
+ Dprintf("typecast_MXDATE_cast: tp = %p n = %d, len = %d, "
+ "y = %d, m = %d, d = %d", tp, n, len, y, m, d);
+ if (n != 3) {
+ PyErr_SetString(DataError, "unable to parse date");
+ }
+
+ if (len > 0) {
+ n = typecast_parse_time(tp, NULL, &len, &hh, &mm, &ss, &us, &tz);
+ Dprintf("typecast_MXDATE_cast: n = %d, len = %d, "
+ "hh = %d, mm = %d, ss = %d, us = %d, tz = %d",
+ n, len, hh, mm, ss, us, tz);
+ if (n < 3 || n > 5) {
+ PyErr_SetString(DataError, "unable to parse time");
+ }
+ }
+
+ Dprintf("typecast_MXDATE_cast: fractionary seconds: %lf",
+ (double)ss + (double)us/(double)1000000.0);
+ return mxDateTimeP->DateTime_FromDateAndTime(y, m, d, hh, mm,
+ (double)ss + (double)us/(double)1000000.0);
+}
+
+/** TIME - parse time into an mx.DateTime object **/
+
+static PyObject *
+typecast_MXTIME_cast(char *str, int len, PyObject *curs)
+{
+ int n, hh=0, mm=0, ss=0, us=0, tz=0;
+
+ if (str == NULL) {Py_INCREF(Py_None); return Py_None;}
+
+ Dprintf("typecast_MXTIME_cast: s = %s", str);
+
+ n = typecast_parse_time(str, NULL, &len, &hh, &mm, &ss, &us, &tz);
+ Dprintf("typecast_MXTIME_cast: time parsed, %d components", n);
+ Dprintf("typecast_MXTIME_cast: hh = %d, mm = %d, ss = %d, us = %d",
+ hh, mm, ss, us);
+
+ if (n < 3 || n > 5) {
+ PyErr_SetString(DataError, "unable to parse time");
+ return NULL;
+ }
+
+ Dprintf("typecast_MXTIME_cast: fractionary seconds: %lf",
+ (double)ss + (double)us/(double)1000000.0);
+ return mxDateTimeP->DateTimeDelta_FromTime(hh, mm,
+ (double)ss + (double)us/(double)1000000.0);
+}
+
+/** INTERVAL - parse an interval into an mx.DateTimeDelta **/
+
+static PyObject *
+typecast_MXINTERVAL_cast(char *str, int len, PyObject *curs)
+{
+ long years = 0, months = 0, days = 0, denominator = 1;
+ double hours = 0.0, minutes = 0.0, seconds = 0.0, hundredths = 0.0;
+ double v = 0.0, sign = 1.0;
+ int part = 0;
+
+ if (str == NULL) {Py_INCREF(Py_None); return Py_None;}
+
+ Dprintf("typecast_MXINTERVAL_cast: s = %s", str);
+
+ while (*str) {
+ switch (*str) {
+
+ case '-':
+ sign = -1.0;
+ break;
+
+ case '0': case '1': case '2': case '3': case '4':
+ case '5': case '6': case '7': case '8': case '9':
+ v = v*10 + (double)*str - (double)'0';
+ Dprintf("typecast_MXINTERVAL_cast: v = %f", v);
+ if (part == 6){
+ denominator *= 10;
+ Dprintf("typecast_MXINTERVAL_cast: denominator = %ld",
+ denominator);
+ }
+ break;
+
+ case 'y':
+ if (part == 0) {
+ years = (long)(v*sign);
+ str = skip_until_space(str);
+ Dprintf("typecast_MXINTERVAL_cast: years = %ld, rest = %s",
+ years, str);
+ v = 0.0; sign = 1.0; part = 1;
+ }
+ break;
+
+ case 'm':
+ if (part <= 1) {
+ months = (long)(v*sign);
+ str = skip_until_space(str);
+ Dprintf("typecast_MXINTERVAL_cast: months = %ld, rest = %s",
+ months, str);
+ v = 0.0; sign = 1.0; part = 2;
+ }
+ break;
+
+ case 'd':
+ if (part <= 2) {
+ days = (long)(v*sign);
+ str = skip_until_space(str);
+ Dprintf("typecast_MXINTERVAL_cast: days = %ld, rest = %s",
+ days, str);
+ v = 0.0; sign = 1.0; part = 3;
+ }
+ break;
+
+ case ':':
+ if (part <= 3) {
+ hours = v;
+ Dprintf("typecast_MXINTERVAL_cast: hours = %f", hours);
+ v = 0.0; part = 4;
+ }
+ else if (part == 4) {
+ minutes = v;
+ Dprintf("typecast_MXINTERVAL_cast: minutes = %f", minutes);
+ v = 0.0; part = 5;
+ }
+ break;
+
+ case '.':
+ if (part == 5) {
+ seconds = v;
+ Dprintf("typecast_MXINTERVAL_cast: seconds = %f", seconds);
+ v = 0.0; part = 6;
+ }
+ break;
+
+ default:
+ break;
+ }
+
+ str++;
+ }
+
+ /* manage last value, be it minutes or seconds or hundredths of a second */
+ if (part == 4) {
+ minutes = v;
+ Dprintf("typecast_MXINTERVAL_cast: minutes = %f", minutes);
+ }
+ else if (part == 5) {
+ seconds = v;
+ Dprintf("typecast_MXINTERVAL_cast: seconds = %f", seconds);
+ }
+ else if (part == 6) {
+ hundredths = v;
+ Dprintf("typecast_MXINTERVAL_cast: hundredths = %f", hundredths);
+ hundredths = hundredths/denominator;
+ Dprintf("typecast_MXINTERVAL_cast: fractions = %.20f", hundredths);
+ }
+
+ /* calculates seconds */
+ if (sign < 0.0) {
+ seconds = - (hundredths + seconds + minutes*60 + hours*3600);
+ }
+ else {
+ seconds += hundredths + minutes*60 + hours*3600;
+ }
+
+ /* calculates days */
+ days += years*365 + months*30;
+
+ Dprintf("typecast_MXINTERVAL_cast: days = %ld, seconds = %f",
+ days, seconds);
+ return mxDateTimeP->DateTimeDelta_FromDaysAndSeconds(days, seconds);
+}
+
+/* psycopg defaults to using mx types */
+
+#ifdef PSYCOPG_DEFAULT_MXDATETIME
+#define typecast_DATE_cast typecast_MXDATE_cast
+#define typecast_TIME_cast typecast_MXTIME_cast
+#define typecast_INTERVAL_cast typecast_MXINTERVAL_cast
+#define typecast_DATETIME_cast typecast_MXDATE_cast
+#endif
+
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