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[smartpl] generate dynamic dates for SMARTPL queries

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For dates that require context (ie today, yesterday, N days ago etc) we want the
underlying SQL to respect the current time when running query;  a query that
requests items for 'today' should only find matches for the time it was run.
Current implementation would generated a fixed date (at the time the SMARTPL is
inserted into db) in the playlist table where as this commit understands the
context of the date.
This commit is contained in:
whatdoineed2do/Ray 2019-07-07 20:56:47 +01:00
parent b240460469
commit d31a8c1e05
1 changed files with 49 additions and 64 deletions
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107
src/SMARTPL2SQL.g
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@ -38,19 +38,6 @@ options {
}
@members {
static time_t startoftoday()
{
struct tm tm;
time_t now;
time(&now);
localtime_r(&now, &tm);
tm.tm_sec = 0;
tm.tm_min = 0;
tm.tm_hour = 0;
return mktime(&tm);
}
}
playlist returns [ pANTLR3_STRING title, pANTLR3_STRING query, pANTLR3_STRING orderby, pANTLR3_STRING having, int limit ]
@ -213,25 +200,19 @@ expression returns [ pANTLR3_STRING result, pANTLR3_STRING orderby, pANTLR3_STRI
}
| DATETAG AFTER dateval
{
char str[15];
sprintf(str, "\%d", $dateval.result);
$result = $DATETAG.text->factory->newRaw($DATETAG.text->factory);
$result->append8($result, "f.");
$result->appendS($result, $DATETAG.text->toUTF8($DATETAG.text));
$result->append8($result, " > ");
$result->append8($result, str);
$result->append8($result, (const char*)$dateval.result->chars);
}
| DATETAG BEFORE dateval
{
char str[15];
sprintf(str, "\%d", $dateval.result);
$result = $DATETAG.text->factory->newRaw($DATETAG.text->factory);
$result->append8($result, "f.");
$result->appendS($result, $DATETAG.text->toUTF8($DATETAG.text));
$result->append8($result, " < ");
$result->append8($result, str);
$result->append8($result, (const char*)$dateval.result->chars);
}
| ENUMTAG IS ENUMVAL
{
@ -328,7 +309,7 @@ ordertag returns [ pANTLR3_STRING result ]
}
;
dateval returns [ int result ]
dateval returns [ pANTLR3_STRING result ]
@init { $result = 0; }
: DATE
{
@ -336,110 +317,114 @@ dateval returns [ int result ]
datval = $DATE.text->chars;
$result = $DATE.text->factory->newRaw($DATE.text->factory);
if (strcmp((char *)datval, "today") == 0)
{
$result = startoftoday();
$result->append8($result, "strftime('\%s', datetime('now', 'start of day', 'localtime'))");
}
else if (strcmp((char *)datval, "yesterday") == 0)
{
$result = startoftoday() - 24 * 3600;
$result->append8($result, "strftime('\%s', datetime('now', 'start of day', '-1 day', 'localtime'))");
}
else if (strcmp((char *)datval, "last week") == 0)
{
$result = startoftoday() - 24 * 3600 * 7;
$result->append8($result, "strftime('\%s', datetime('now', 'start of day', 'weekday 0', '-13 days', 'localtime'))");
}
else if (strcmp((char *)datval, "last month") == 0)
{
$result = startoftoday() - 24 * 3600 * 30;
$result->append8($result, "strftime('\%s', datetime('now', 'start of month', '-1 month', 'localtime'))");
}
else if (strcmp((char *)datval, "last year") == 0)
{
$result = startoftoday() - 24 * 3600 * 365;
$result->append8($result, "strftime('\%s', datetime('now', 'start of year', '-1 year', 'localtime'))");
}
else
{
struct tm tm;
char year[5];
char month[3];
char day[3];
memset((void*)&tm,0,sizeof(tm));
memset(year, 0, sizeof(year));
memset(month, 0, sizeof(month));
memset(day, 0, sizeof(day));
strncpy(year, (const char *)datval, 4);
strncpy(month, (const char *)datval + 5, 2);
strncpy(day, (const char *)datval + 8, 2);
tm.tm_year = atoi(year) - 1900;
tm.tm_mon = atoi(month) - 1;
tm.tm_mday = atoi(day);
$result = mktime(&tm);
$result->append8($result, "strftime('\%s', datetime('YYYY-MM-DD', (char*)dateval, 'localtime'))");
}
}
| interval BEFORE DATE
{
pANTLR3_UINT8 datval;
char str[15];
datval = $DATE.text->chars;
sprintf(str, "\%d", $interval.result);
$result = $DATE.text->factory->newRaw($DATE.text->factory);
if (strcmp((char *)datval, "yesterday") == 0)
{
$result = startoftoday() - 24 * 3600;
$result->append8($result, "strftime('\%s', datetime('now', 'start of day', '-1 day', ");
}
else if (strcmp((char *)datval, "last week") == 0)
{
$result = startoftoday() - 24 * 3600 * 7;
$result->append8($result, "strftime('\%s', datetime('now', 'start of day', 'weekday 0', '-13 days', ");
}
else if (strcmp((char *)datval, "last month") == 0)
{
$result = startoftoday() - 24 * 3600 * 30;
$result->append8($result, "strftime('\%s', datetime('now', 'start of month', '-1 month', ");
}
else if (strcmp((char *)datval, "last year") == 0)
{
$result = startoftoday() - 24 * 3600 * 365;
$result->append8($result, "strftime('\%s', datetime('now', 'start of year', '-1 year', ");
}
else
{
$result = startoftoday(NULL);
$result->append8($result, "strftime('\%s', datetime('now', 'start of day', ");
}
$result = $result - $interval.result;
}
$result->append8($result, "'-");
$result->append8($result, str);
$result->append8($result, " seconds', 'localtime'))");
}
| interval AFTER DATE
{
pANTLR3_UINT8 datval;
char str[15];
datval = $DATE.text->chars;
sprintf(str, "\%d", $interval.result);
$result = $DATE.text->factory->newRaw($DATE.text->factory);
if (strcmp((char *)datval, "yesterday") == 0)
{
$result = startoftoday() - 24 * 3600;
$result->append8($result, "strftime('\%s', datetime('now', 'start of day', '-1 day', ");
}
else if (strcmp((char *)datval, "last week") == 0)
{
$result = startoftoday() - 24 * 3600 * 7;
$result->append8($result, "strftime('\%s', datetime('now', 'start of day', 'weekday 0', '-13 days', ");
}
else if (strcmp((char *)datval, "last month") == 0)
{
$result = startoftoday() - 24 * 3600 * 30;
$result->append8($result, "strftime('\%s', datetime('now', 'start of month', '-1 month', ");
}
else if (strcmp((char *)datval, "last year") == 0)
{
$result = startoftoday() - 24 * 3600 * 365;
$result->append8($result, "strftime('\%s', datetime('now', 'start of year', '-1 year', ");
}
else
{
$result = startoftoday();
$result->append8($result, "strftime('\%s', datetime('now', 'start of day', ");
}
$result = $result + $interval.result;
}
$result->append8($result, "'+");
$result->append8($result, str);
$result->append8($result, " seconds', 'localtime'))");
}
| interval AGO
{
$result = startoftoday() - $interval.result;
char str[15];
sprintf(str, "\%d", $interval.result);
$result = $AGO.text->factory->newRaw($AGO.text->factory);
$result->append8($result, "strftime('\%s', datetime('now', 'start of day', ");
$result->append8($result, "'-");
$result->append8($result, str);
$result->append8($result, " seconds', 'localtime'))");
}
;