155 lines
4.3 KiB
C++
155 lines
4.3 KiB
C++
/* ---------------------------------------------------------------------------
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Nullsoft Database Engine
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--------------------
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codename: Near Death Experience
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--------------------------------------------------------------------------- */
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/* ---------------------------------------------------------------------------
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Scanner Class Prototypes
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--------------------------------------------------------------------------- */
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#ifndef __SCANNER_H
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#define __SCANNER_H
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#include <vector>
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#include "record.h"
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#include "Table.h"
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#include "index.h"
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#include <vector>
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#include <set>
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#ifdef __APPLE__
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#include <CoreFoundation/CoreFoundation.h>
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#endif
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class Table;
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class Index;
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#pragma warning( disable: 4251 )
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class Scanner;
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class Record;
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class Scanner : public LinkedListEntry
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{
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public:
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Record *GetRecord(int Idx);
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Scanner(Table *parentTable);
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void IndexModified(void);
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Index *GetIndex() { return index; }
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Index *index; // TODO: make protected
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protected:
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~Scanner();
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Table *pTable;
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BOOL iModified;
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typedef std::vector<StringField *> SearchStrings;
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SearchStrings search_strings;
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typedef std::set<unsigned char> SearchFields;
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SearchFields search_fields;
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bool search_any;
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void GetCurrentRecord(void);
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bool MatchFilters(void);
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bool MatchSearches();
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bool MatchSearch(const SearchFields &fields, StringField *search_field);
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//BOOL MatchJoins(void);
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int CheckFilters(void);
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void CacheLastLocate(int Id, int From, Field *field, Index *i, int j);
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static int Query_LookupToken(const wchar_t *token);
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void Query_CleanUp(void);
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void Query_SyntaxError(int c);
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public:
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static int Query_GetNextToken(const wchar_t *p, int *size, wchar_t **token, int tokentable=0);
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static const wchar_t *Query_EatSpace(const wchar_t *p);
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static wchar_t *Query_ProbeSpace(wchar_t *p);
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static const wchar_t *Query_ProbeNonAlphaNum(const wchar_t *p);
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static wchar_t *Query_ProbeAlphaNum(wchar_t *p);
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static int Query_isControlChar(wchar_t p);
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BOOL Query(const wchar_t *query);
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BOOL Query_Parse(const wchar_t *query);
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const wchar_t *GetLastQuery();
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public://fucko: protected
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LinkedList pstack;
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wchar_t *token;
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wchar_t *last_query;
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int last_query_failed;
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protected:
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Record *CurrentRecord;
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int CurrentRecordIdx;
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LinkedList FilterList;
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Index *lastLocateIndex;
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int lastLocateIdx;
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Field *lastLocateFieldClone;
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int lastLocateFrom;
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int lastLocateId;
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BOOL Edition;
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int ResultPtr;
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BOOL FiltersOK;
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public:
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bool MatchFilter(Filter *filter);
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typedef bool (*FilterWalker)(Scanner *scanner, Filter *filter, void *context);
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void WalkFilters(FilterWalker walker, void *context);
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ColumnField *GetColumnByName(const wchar_t *FieldName);
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ColumnField *GetColumnById(unsigned char id);
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Field *NewFieldByName(const wchar_t *fieldName, unsigned char Perm);
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Field *NewFieldByType(unsigned char Type, unsigned char Id, unsigned char Perm);
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Field *NewFieldById(unsigned char Id, unsigned char Perm);
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void DeleteField(Field *field);
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void DeleteFieldByName(const wchar_t *name);
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void DeleteFieldById(unsigned char Id);
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void Cancel(void);
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void Insert(void);
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void Edit(void);
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void Post(void);
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void Delete(void);
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Field *GetFieldByName(const wchar_t *FieldName);
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Field *GetFieldById(unsigned char Id);
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void First(int *killswitch=0);
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void Last(int *killswitch=0);
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int Next(int *killswitch=0);
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int Previous(int *killswitch=0);
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BOOL Eof(void);
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BOOL Bof(void);
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void New(void);
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int GetRecordsCount(void);
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void GetRecordById(int Id, BOOL checkFilters=TRUE);
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int GetRecordId(void);
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void Sync(void);
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BOOL LocateByName(const wchar_t *column, int From, Field *field, int *nskip=NULL);
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BOOL LocateById(int Id, int From, Field *field, int *nskip=NULL);
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BOOL LocateByIdEx(int Id, int From, Field *field, int *nskip, int comp_mode);
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// Filters
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int AddFilterByName(const wchar_t *name, Field *Data, unsigned char Op);
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int AddFilterById(unsigned char Id, Field *Data, unsigned char Op);
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int AddFilterOp(unsigned char Op);
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void RemoveFilters(void);
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Filter *GetLastFilter(void);
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BOOL SetWorkingIndexByName(const wchar_t *desc);
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BOOL SetWorkingIndexById(unsigned char Id);
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void Search(const wchar_t *search_string);
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BOOL HasIndexChanged(void) { return iModified; }
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void ClearDirtyBit(void);
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float FragmentationLevel(void);
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void WalkFields(Record::FieldsWalker callback, void *context);
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Table *GetTable();
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int in_query_parser;
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int disable_date_resolution;
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};
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#endif
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