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Enhance date/time functions to work with negative years. Ticket #617. (CVS 1255)

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FossilOrigin-Name: ffa971934867b6bbe943c004154d5f161e0ea697
This commit is contained in:
drh
2004-02-21 03:28:18 +00:00
parent 8307ac7521
commit 8eb2cce55c
4 changed files with 32 additions and 19 deletions
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23
src/date.c
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@@ -16,7 +16,7 @@
** sqliteRegisterDateTimeFunctions() found at the bottom of the file.
** All other code has file scope.
**
** $Id: date.c,v 1.10 2004/02/10 13:19:35 drh Exp $
** $Id: date.c,v 1.11 2004/02/21 03:28:18 drh Exp $
**
** NOTES:
**
@@ -260,8 +260,14 @@ static void computeJD(DateTime *p){
** date.
*/
static int parseYyyyMmDd(const char *zDate, DateTime *p){
int Y, M, D;
int Y, M, D, neg;
if( zDate[0]=='-' ){
zDate++;
neg = 1;
}else{
neg = 0;
}
Y = getDigits(zDate, 4);
if( Y<0 || zDate[4]!='-' ) return 1;
zDate += 5;
@@ -281,7 +287,7 @@ static int parseYyyyMmDd(const char *zDate, DateTime *p){
}
p->validJD = 0;
p->validYMD = 1;
p->Y = Y;
p->Y = neg ? -Y : Y;
p->M = M;
p->D = D;
if( p->validTZ ){
@@ -307,15 +313,12 @@ static int parseYyyyMmDd(const char *zDate, DateTime *p){
** as there is a year and date.
*/
static int parseDateOrTime(const char *zDate, DateTime *p){
int i;
memset(p, 0, sizeof(*p));
for(i=0; isdigit(zDate[i]); i++){}
if( i==4 && zDate[i]=='-' ){
return parseYyyyMmDd(zDate, p);
}else if( i==2 && zDate[i]==':' ){
return parseHhMmSs(zDate, p);
if( parseYyyyMmDd(zDate,p)==0 ){
return 0;
}else if( i==0 && sqliteStrICmp(zDate,"now")==0 ){
}else if( parseHhMmSs(zDate, p)==0 ){
return 0;
}else if( sqliteStrICmp(zDate,"now")==0){
double r;
if( sqliteOsCurrentTime(&r)==0 ){
p->rJD = r;