winamp/Src/Plugins/Library/ml_history/HistoryAPI.cpp

94 lines
1.9 KiB
C++

#include "HistoryAPI.h"
#include "ml_history.h"
static void saveQueryToList(nde_scanner_t s, historyRecordList *obj)
{
emptyRecentRecordList(obj);
NDE_Scanner_First(s);
int r;
do
{
nde_field_t f = NDE_Scanner_GetFieldByID(s, HISTORYVIEW_COL_FILENAME);
if (f)
{
allocRecentRecordList(obj, obj->Size + 1);
if (!obj->Alloc) break;
wchar_t *strval = NDE_StringField_GetString(f);
ndestring_retain(strval);
obj->Items[obj->Size].filename = strval;
recentScannerRefToObjCacheNFN(s, obj);
}
r = NDE_Scanner_Next(s);
}
while (r && !NDE_Scanner_EOF(s));
if (obj->Size && obj->Size < obj->Alloc - 1024)
{
size_t old_Alloc = obj->Alloc;
obj->Alloc = obj->Size;
historyRecord *data = (historyRecord*)realloc(obj->Items, sizeof(historyRecord) * obj->Alloc);
if (data)
{
obj->Items=data;
}
else
{
data=(historyRecord*)malloc(sizeof(historyRecord)*obj->Alloc);
if (data)
{
memcpy(data, obj->Items, sizeof(historyRecord)*old_Alloc);
free(obj->Items);
obj->Items=data;
}
else obj->Alloc = (int)old_Alloc;
}
}
}
historyRecordList *HistoryAPI::Query(const wchar_t *query)
{
if (!openDb())
return 0;
// run query
EnterCriticalSection(&g_db_cs);
nde_scanner_t s=NDE_Table_CreateScanner(g_table);
NDE_Scanner_Query(s, query);
historyRecordList obj;
obj.Alloc = 0;
obj.Items = NULL;
obj.Size = 0;
saveQueryToList(s, &obj);
NDE_Table_DestroyScanner(g_table, s);
LeaveCriticalSection(&g_db_cs);
if (obj.Size)
{
historyRecordList *result = (historyRecordList *)malloc(sizeof(historyRecordList));
memcpy(result, &obj, sizeof(historyRecordList));
return result;
}
else
{
freeRecentRecordList(&obj);
return 0;
}
}
void HistoryAPI::FreeHistoryList(historyRecordList *historyList)
{
freeRecentRecordList(historyList);
}
#define CBCLASS HistoryAPI
START_DISPATCH;
CB(API_HISTORY_QUERY, Query)
VCB(API_HISTORY_FREEHISTORYLIST, FreeHistoryList)
END_DISPATCH;
#undef CBCLASS