Initial community commit

Src/nde/android/Scanner.h

@@ -0,0 +1,148 @@
+/* ---------------------------------------------------------------------------
+ Nullsoft Database Engine
+ --------------------
+ codename: Near Death Experience
+ --------------------------------------------------------------------------- */
+
+/* ---------------------------------------------------------------------------
+ 
+ Scanner Class Prototypes
+ 
+ Android (linux) implementation
+
+ --------------------------------------------------------------------------- */
+
+#ifndef __SCANNER_H
+#define __SCANNER_H
+
+#include "../nde.h"
+#include "record.h"
+#include "../index.h"
+#include <nu/Vector.h>
+#include <nu/ValueSet.h>
+#include "../LinkedList.h"
+class Table;
+class Index;
+
+class Scanner : public LinkedListEntry 
+{
+public:
+	Record *GetRecord(int Idx);
+	Scanner(Table *parentTable);
+	void IndexModified(void);
+	Index *GetIndex() { return index; }
+	Index *index; // TODO: make protected
+protected:
+
+	~Scanner();
+
+	Table *pTable;
+	bool iModified;
+	typedef Vector<StringField *> SearchStrings;
+	SearchStrings search_strings;
+	typedef ValueSet<unsigned char> SearchFields;
+	SearchFields search_fields;
+	bool search_any;
+
+	void GetCurrentRecord(void);
+	bool MatchFilters(void);
+	bool MatchSearches();
+	bool MatchSearch(const SearchFields &fields, StringField *search_field);
+	//BOOL MatchJoins(void);
+	bool CheckFilters(void);
+	void CacheLastLocate(int Id, int From, Field *field, Index *i, int j);
+
+	static int Query_LookupToken(const char *token);
+	void Query_CleanUp(void);
+	void Query_SyntaxError(int c);
+public:
+	static int Query_GetNextToken(const char *p, int *size, char **token, int tokentable=0);
+	static const char *Query_EatSpace(const char *p);
+	static char *Query_ProbeSpace(char *p);
+	static const char *Query_ProbeNonAlphaNum(const char *p);
+	static char *Query_ProbeAlphaNum(char *p);
+	static int Query_isControlChar(char p);
+
+	bool Query(const char *query);
+	bool Query_Parse(const char *query);
+
+	const char *GetLastQuery();
+
+public://fucko: protected
+	LinkedList pstack;
+	char *token;
+	char *last_query;
+	int last_query_failed;
+
+protected:
+	Record *CurrentRecord;
+	int CurrentRecordIdx;
+	LinkedList FilterList;
+	Index *lastLocateIndex;
+	int lastLocateIdx;
+	Field *lastLocateFieldClone;
+	int lastLocateFrom;
+	int lastLocateId;
+	bool Edition;
+	int ResultPtr;
+	bool FiltersOK;
+
+public:
+	bool MatchFilter(Filter *filter);
+	typedef bool (*FilterWalker)(Scanner *scanner, Filter *filter, void *context);
+	void WalkFilters(FilterWalker walker, void *context);
+
+	ColumnField *GetColumnByName(const char *FieldName);
+	ColumnField *GetColumnById(unsigned char id);
+
+	Field *NewFieldByName(const char *fieldName, unsigned char Perm);
+	Field *NewFieldById(unsigned char Id, unsigned char Perm);
+	void DeleteField(Field *field);
+	void DeleteFieldByName(const char *name); 
+	void DeleteFieldById(unsigned char Id);
+
+	void Cancel(void);
+	void Insert(void);
+	void Edit(void);
+	void Post(void);
+	void Delete(void); 
+
+	Field *GetFieldByName(const char *FieldName);
+	Field *GetFieldById(unsigned char Id);
+
+	void First(int *killswitch=0);
+	void Last(int *killswitch=0);
+	int Next(int *killswitch=0);
+	int Previous(int *killswitch=0);
+	bool Eof(void);
+	bool Bof(void);
+	void New(void);
+	int GetRecordsCount(void);
+	void GetRecordById(int Id, bool checkFilters=true);
+	int GetRecordId(void);
+	void Sync(void);
+	bool LocateByName(const char *column, int From, Field *field, int *nskip=NULL);
+	bool LocateById(int Id, int From, Field *field, int *nskip=NULL);
+	bool LocateByIdEx(int Id, int From, Field *field, int *nskip, int comp_mode);
+
+	// Filters
+	int AddFilterByName(const char *name, Field *Data, unsigned char Op);
+	int AddFilterById(unsigned char Id, Field *Data, unsigned char Op);
+	int AddFilterOp(unsigned char Op);
+	void RemoveFilters(void);
+	Filter *GetLastFilter(void);
+
+	bool SetWorkingIndexByName(const char *desc);
+	bool SetWorkingIndexById(unsigned char Id);
+
+	void Search(const char *search_string);
+	bool HasIndexChanged(void) { return iModified; }
+	void ClearDirtyBit(void);
+	float FragmentationLevel(void);
+
+	Table *GetTable();
+	int in_query_parser;
+	int disable_date_resolution;
+};
+
+#endif