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Faster implementation of the date(), time(), and datetime() functions.

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FossilOrigin-Name: fa1b393bdb66b985f6552190a8242ed878f91d653a03352f65aa8d750de3cec4
This commit is contained in:
drh
2022-02-10 12:57:53 +00:00
parent ddd3fe6fc4
commit 522608d3a2
3 changed files with 72 additions and 17 deletions
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12
manifest
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@@ -1,5 +1,5 @@
C Fix\sthe\stest\sharness\sso\sthat\sit\sbuilds\swithout\sSQLITE_ENABLE_PREUPDATE_HOOK.\nHas\sbeen\sbroken\ssince\s[c006515ae6faff65].
D 2022-02-10T12:31:37.892
C Faster\simplementation\sof\sthe\sdate(),\stime(),\sand\sdatetime()\sfunctions.
D 2022-02-10T12:57:53.736
F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@ -499,7 +499,7 @@ F src/build.c b59ff41525c10b429adc277d3bca6e433b09d055b0df8c1529385763cea8bb04
F src/callback.c 4c19af69835787bfe790ac560f3071a824eb629f34e41f97b52ce5235c77de1c
F src/complete.c a3634ab1e687055cd002e11b8f43eb75c17da23e
F src/ctime.c 2cce39df1a13e05b7633e6d21b651f21492471f991dd7b323a4ee4e7b7f0b7f1
F src/date.c 41627dec396f3d33e2c317a065f9d59bb535982b2ea3a561c96e4d4cf1137b65
F src/date.c c9275705b097fe875ad4d194ed20e0af115f6d50058038e03ac8f8e417ee06eb
F src/dbpage.c 8a01e865bf8bc6d7b1844b4314443a6436c07c3efe1d488ed89e81719047833a
F src/dbstat.c 861e08690fcb0f2ee1165eff0060ea8d4f3e2ea10f80dab7d32ad70443a6ff2d
F src/delete.c b5f1716b4d723db48254ee0f896e362cd029e865e05414139ea7f539f3884e1d
@@ -1944,8 +1944,8 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
P e97c6ad4c915c82c2f0b347a0cdc8f80942c345194675a88174047ce0d0a43ad
R d61adca3b531e3867be427e74f9a778b
P 4565f711291bae5daaff6dd2b7b2991b17e139a576b1b73bb1f81f08a4c1a13f
R 83b35984d6e76589cbc31defad98bf4a
U drh
Z 34460101605bb1e673848aeae36b08e4
Z f2060761086c3825d641957e607d18e2
# Remove this line to create a well-formed Fossil manifest.

2
manifest.uuid
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@@ -1 +1 @@
4565f711291bae5daaff6dd2b7b2991b17e139a576b1b73bb1f81f08a4c1a13f
fa1b393bdb66b985f6552190a8242ed878f91d653a03352f65aa8d750de3cec4

75
src/date.c
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@@ -1002,11 +1002,38 @@ static void datetimeFunc(
){
DateTime x;
if( isDate(context, argc, argv, &x)==0 ){
char zBuf[100];
int Y, s;
char zBuf[24];
computeYMD_HMS(&x);
sqlite3_snprintf(sizeof(zBuf), zBuf, "%04d-%02d-%02d %02d:%02d:%02d",
x.Y, x.M, x.D, x.h, x.m, (int)(x.s));
sqlite3_result_text(context, zBuf, -1, SQLITE_TRANSIENT);
Y = x.Y;
if( Y<0 ) Y = -Y;
zBuf[1] = '0' + (Y/1000)%10;
zBuf[2] = '0' + (Y/100)%10;
zBuf[3] = '0' + (Y/10)%10;
zBuf[4] = '0' + (Y)%10;
zBuf[5] = '-';
zBuf[6] = '0' + (x.M/10)%10;
zBuf[7] = '0' + (x.M)%10;
zBuf[8] = '-';
zBuf[9] = '0' + (x.D/10)%10;
zBuf[10] = '0' + (x.D)%10;
zBuf[11] = ' ';
zBuf[12] = '0' + (x.h/10)%10;
zBuf[13] = '0' + (x.h)%10;
zBuf[14] = ':';
zBuf[15] = '0' + (x.m/10)%10;
zBuf[16] = '0' + (x.m)%10;
zBuf[17] = ':';
s = (int)x.s;
zBuf[18] = '0' + (s/10)%10;
zBuf[19] = '0' + (s)%10;
zBuf[20] = 0;
if( x.Y<0 ){
zBuf[0] = '-';
sqlite3_result_text(context, zBuf, 20, SQLITE_TRANSIENT);
}else{
sqlite3_result_text(context, &zBuf[1], 19, SQLITE_TRANSIENT);
}
}
}
@@ -1022,10 +1049,20 @@ static void timeFunc(
){
DateTime x;
if( isDate(context, argc, argv, &x)==0 ){
char zBuf[100];
int s;
char zBuf[16];
computeHMS(&x);
sqlite3_snprintf(sizeof(zBuf), zBuf, "%02d:%02d:%02d", x.h, x.m, (int)x.s);
sqlite3_result_text(context, zBuf, -1, SQLITE_TRANSIENT);
zBuf[0] = '0' + (x.h/10)%10;
zBuf[1] = '0' + (x.h)%10;
zBuf[2] = ':';
zBuf[3] = '0' + (x.m/10)%10;
zBuf[4] = '0' + (x.m)%10;
zBuf[5] = ':';
s = (int)x.s;
zBuf[6] = '0' + (s/10)%10;
zBuf[7] = '0' + (s)%10;
zBuf[8] = 0;
sqlite3_result_text(context, zBuf, 8, SQLITE_TRANSIENT);
}
}
@@ -1041,10 +1078,28 @@ static void dateFunc(
){
DateTime x;
if( isDate(context, argc, argv, &x)==0 ){
char zBuf[100];
int Y;
char zBuf[16];
computeYMD(&x);
sqlite3_snprintf(sizeof(zBuf), zBuf, "%04d-%02d-%02d", x.Y, x.M, x.D);
sqlite3_result_text(context, zBuf, -1, SQLITE_TRANSIENT);
Y = x.Y;
if( Y<0 ) Y = -Y;
zBuf[1] = '0' + (Y/1000)%10;
zBuf[2] = '0' + (Y/100)%10;
zBuf[3] = '0' + (Y/10)%10;
zBuf[4] = '0' + (Y)%10;
zBuf[5] = '-';
zBuf[6] = '0' + (x.M/10)%10;
zBuf[7] = '0' + (x.M)%10;
zBuf[8] = '-';
zBuf[9] = '0' + (x.D/10)%10;
zBuf[10] = '0' + (x.D)%10;
zBuf[11] = 0;
if( x.Y<0 ){
zBuf[0] = '-';
sqlite3_result_text(context, zBuf, 11, SQLITE_TRANSIENT);
}else{
sqlite3_result_text(context, &zBuf[1], 10, SQLITE_TRANSIENT);
}
}
}