/************* Value C++ Functions Source Code File (.CPP) *************/
/* Name: VALUE.CPP Version 2.2 */
/* */
/* (C) Copyright to the author Olivier BERTRAND 2001-2013 */
/* */
/* This file contains the VALUE and derived classes family functions. */
/* These classes contain values of different types. They are used so */
/* new object types can be defined and added to the processing simply */
/* (hopefully) adding their specific functions in this file. */
/* First family is VALUE that represent single typed objects. It is */
/* used by columns (COLBLK), SELECT and FILTER (derived) objects. */
/* Second family is VALBLK, representing simple suballocated arrays */
/* of values treated sequentially by FIX, BIN and VCT tables and */
/* columns, as well for min/max blocks as for VCT column blocks. */
/* Q&A: why not using only one family ? Simple values are arrays that */
/* have only one element and arrays could have functions for all kind */
/* of processing. The answer is a-because historically it was simpler */
/* to do that way, b-because of performance on single values, and c- */
/* to avoid too complicated classes and unuseful duplication of many */
/* functions used on one family only. The drawback is that for new */
/* types of objects, we shall have more classes to update. */
/* Currently the only implemented types are STRING, INT, SHORT, TINY, */
/* DATE and LONGLONG. Shortly we should add at least UNSIGNED types. */
/***********************************************************************/
/***********************************************************************/
/* Include relevant MariaDB header file. */
/***********************************************************************/
#include "my_global.h"
#if defined(WIN32)
//#include <windows.h>
#else // !WIN32
#include <string.h>
#endif // !WIN32
#include <math.h>
#undef DOMAIN // Was defined in math.h
/***********************************************************************/
/* Include required application header files */
/* global.h is header containing all global Plug declarations. */
/* plgdbsem.h is header containing the DB applic. declarations. */
/***********************************************************************/
#include "global.h"
#include "plgdbsem.h"
#include "preparse.h" // For DATPAR
//#include "value.h"
#include "valblk.h"
#define NO_FUNC // Already defined in ODBConn
#include "plgcnx.h" // For DB types
/***********************************************************************/
/* Check macro's. */
/***********************************************************************/
#if defined(_DEBUG)
#define CheckType(V) if (Type != V->GetType()) { \
PGLOBAL& g = Global; \
strcpy(g->Message, MSG(VALTYPE_NOMATCH)); \
longjmp(g->jumper[g->jump_level], Type); }
#else
#define CheckType(V)
#endif
#define FOURYEARS 126230400 // Four years in seconds (1 leap)
/***********************************************************************/
/* Static variables. */
/***********************************************************************/
static char *list =
" ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789/.*-�abcdefghijklmnopqrstuv"; //wxyz�'
//" ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz.";
extern "C" int trace;
/***********************************************************************/
/* Initialize the DTVAL static member. */
/***********************************************************************/
int DTVAL::Shift = 0;
/***********************************************************************/
/* Routines called externally. */
/***********************************************************************/
bool PlugEvalLike(PGLOBAL, LPCSTR, LPCSTR, bool);
#if !defined(WIN32)
extern "C" {
PSZ strupr(PSZ s);
PSZ strlwr(PSZ s);
}
#endif // !WIN32
#ifdef NOT_USED
/***********************************************************************/
/* Returns the bitmap representing the conditions that must not be */
/* met when returning from TestValue for a given operator. */
/* Bit one is EQ, bit 2 is LT, and bit 3 is GT. */
/***********************************************************************/
static BYTE OpBmp(PGLOBAL g, OPVAL opc)
{
BYTE bt;
switch (opc) {
case OP_IN:
case OP_EQ: bt = 0x06; break;
case OP_NE: bt = 0x01; break;
case OP_GT: bt = 0x03; break;
case OP_GE: bt = 0x02; break;
case OP_LT: bt = 0x05; break;
case OP_LE: bt = 0x04; break;
case OP_EXIST: bt = 0x00; break;
default:
sprintf(g->Message, MSG(BAD_FILTER_OP), opc);
longjmp(g->jumper[g->jump_level], 777);
} // endswitch opc
return bt;
} // end of OpBmp
#endif
/***********************************************************************/
/* GetTypeName: returns the PlugDB internal type name. */
/***********************************************************************/
PSZ GetTypeName(int type)
{
PSZ name = "UNKNOWN";
switch (type) {
case TYPE_STRING: name = "CHAR"; break;
case TYPE_SHORT: name = "SMALLINT"; break;
case TYPE_INT: name = "INTEGER"; break;
case TYPE_BIGINT: name = "BIGINT"; break;
case TYPE_DATE: name = "DATE"; break;
case TYPE_FLOAT: name = "FLOAT"; break;
case TYPE_TINY: name = "TINY"; break;
} // endswitch type
return name;
} // end of GetTypeName
/***********************************************************************/
/* GetTypeSize: returns the PlugDB internal type size. */
/***********************************************************************/
int GetTypeSize(int type, int len)
{
switch (type) {
case TYPE_STRING: len = len * sizeof(char); break;
case TYPE_SHORT: len = sizeof(short); break;
case TYPE_INT: len = sizeof(int); break;
case TYPE_BIGINT: len = sizeof(longlong); break;
case TYPE_DATE: len = sizeof(int); break;
case TYPE_FLOAT: len = sizeof(double); break;
case TYPE_TINY: len = sizeof(char); break;
break;
default: len = 0;
} // endswitch type
return len;
} // end of GetTypeSize
/***********************************************************************/
/* GetFormatType: returns the FORMAT character(s) according to type. */
/***********************************************************************/
char *GetFormatType(int type)
{
char *c = "X";
switch (type) {
case TYPE_STRING: c = "C"; break;
case TYPE_SHORT: c = "S"; break;
case TYPE_INT: c = "N"; break;
case TYPE_BIGINT: c = "L"; break;
case TYPE_FLOAT: c = "F"; break;
case TYPE_DATE: c = "D"; break;
case TYPE_TINY: c = "T"; break;
} // endswitch type
return c;
} // end of GetFormatType
/***********************************************************************/
/* GetFormatType: returns the FORMAT type according to character. */
/***********************************************************************/
int GetFormatType(char c)
{
int type = TYPE_ERROR;
switch (c) {
case 'C': type = TYPE_STRING; break;
case 'S': type = TYPE_SHORT; break;
case 'N': type = TYPE_INT; break;
case 'L': type = TYPE_BIGINT; break;
case 'F': type = TYPE_FLOAT; break;
case 'D': type = TYPE_DATE; break;
case 'T': type = TYPE_TINY; break;
} // endswitch type
return type;
} // end of GetFormatType
/***********************************************************************/
/* IsTypeChar: returns true for character type(s). */
/***********************************************************************/
bool IsTypeChar(int type)
{
switch (type) {
case TYPE_STRING:
return true;
} // endswitch type
return false;
} // end of IsTypeChar
/***********************************************************************/
/* IsTypeNum: returns true for numeric types. */
/***********************************************************************/
bool IsTypeNum(int type)
{
switch (type) {
case TYPE_INT:
case TYPE_BIGINT:
case TYPE_DATE:
case TYPE_FLOAT:
case TYPE_SHORT:
case TYPE_NUM:
case TYPE_TINY:
return true;
} // endswitch type
return false;
} // end of IsTypeNum
/***********************************************************************/
/* GetFmt: returns the format to use with a typed value. */
/***********************************************************************/
const char *GetFmt(int type)
{
const char *fmt;
switch (type) {
case TYPE_STRING: fmt = "%s"; break;
case TYPE_SHORT: fmt = "%hd"; break;
case TYPE_BIGINT: fmt = "%lld"; break;
case TYPE_FLOAT: fmt = "%.*lf"; break;
default: fmt = "%d"; break;
} // endswitch Type
return fmt;
} // end of GetFmt
/***********************************************************************/
/* ConvertType: what this function does is to determine the type to */
/* which should be converted a value so no precision would be lost. */
/* This can be a numeric type if num is true or non numeric if false. */
/* Note: this is an ultra simplified version of this function that */
/* should become more and more complex as new types are added. */
/* Not evaluated types (TYPE_VOID or TYPE_UNDEF) return false from */
/* IsType... functions so match does not prevent correct setting. */
/***********************************************************************/
int ConvertType(int target, int type, CONV kind, bool match)
{
switch (kind) {
case CNV_CHAR:
if (match && (!IsTypeChar(target) || !IsTypeChar(type)))
return TYPE_ERROR;
return TYPE_STRING;
case CNV_NUM:
if (match && (!IsTypeNum(target) || !IsTypeNum(type)))
return TYPE_ERROR;
return (target == TYPE_FLOAT || type == TYPE_FLOAT) ? TYPE_FLOAT
: (target == TYPE_DATE || type == TYPE_DATE) ? TYPE_DATE
: (target == TYPE_BIGINT || type == TYPE_BIGINT) ? TYPE_BIGINT
: (target == TYPE_INT || type == TYPE_INT) ? TYPE_INT
: (target == TYPE_SHORT || type == TYPE_SHORT) ? TYPE_SHORT
: TYPE_TINY;
default:
if (target == TYPE_ERROR || target == type)
return type;
if (match && ((IsTypeChar(target) && !IsTypeChar(type)) ||
(IsTypeNum(target) && !IsTypeNum(type))))
return TYPE_ERROR;
return (target == TYPE_FLOAT || type == TYPE_FLOAT) ? TYPE_FLOAT
: (target == TYPE_DATE || type == TYPE_DATE) ? TYPE_DATE
: (target == TYPE_BIGINT || type == TYPE_BIGINT) ? TYPE_BIGINT
: (target == TYPE_INT || type == TYPE_INT) ? TYPE_INT
: (target == TYPE_SHORT || type == TYPE_SHORT) ? TYPE_SHORT
: (target == TYPE_STRING || type == TYPE_STRING) ? TYPE_STRING
: (target == TYPE_TINY || type == TYPE_TINY) ? TYPE_TINY
: TYPE_ERROR;
} // endswitch kind
} // end of ConvertType
/***********************************************************************/
/* AllocateConstant: allocates a constant Value. */
/***********************************************************************/
PVAL AllocateValue(PGLOBAL g, void *value, short type)
{
PVAL valp;
if (trace)
htrc("AllocateConstant: value=%p type=%hd\n", value, type);
switch (type) {
case TYPE_STRING:
valp = new(g) TYPVAL<PSZ>((PSZ)value);
break;
case TYPE_SHORT:
valp = new(g) TYPVAL<short>(*(short*)value, TYPE_SHORT);
break;
case TYPE_INT:
valp = new(g) TYPVAL<int>(*(int*)value, TYPE_INT);
break;
case TYPE_BIGINT:
valp = new(g) TYPVAL<longlong>(*(longlong*)value, TYPE_BIGINT);
break;
case TYPE_FLOAT:
valp = new(g) TYPVAL<double>(*(double *)value, TYPE_FLOAT);
break;
case TYPE_TINY:
valp = new(g) TYPVAL<char>(*(char *)value, TYPE_TINY);
break;
default:
sprintf(g->Message, MSG(BAD_VALUE_TYPE), type);
return NULL;
} // endswitch Type
valp->SetGlobal(g);
return valp;
} // end of AllocateValue
/***********************************************************************/
/* Allocate a variable Value according to type, length and precision. */
/***********************************************************************/
PVAL AllocateValue(PGLOBAL g, int type, int len, int prec,
PSZ dom, PCATLG cat)
{
PVAL valp;
switch (type) {
case TYPE_STRING:
valp = new(g) TYPVAL<PSZ>(g, (PSZ)NULL, len, prec);
break;
case TYPE_DATE:
valp = new(g) DTVAL(g, len, prec, dom);
break;
case TYPE_INT:
valp = new(g) TYPVAL<int>((int)0, TYPE_INT);
break;
case TYPE_BIGINT:
valp = new(g) TYPVAL<longlong>((longlong)0, TYPE_BIGINT);
break;
case TYPE_SHORT:
valp = new(g) TYPVAL<short>((short)0, TYPE_SHORT);
break;
case TYPE_FLOAT:
valp = new(g) TYPVAL<double>(0.0, prec, TYPE_FLOAT);
break;
case TYPE_TINY:
valp = new(g) TYPVAL<char>((char)0, TYPE_TINY);
break;
default:
sprintf(g->Message, MSG(BAD_VALUE_TYPE), type);
return NULL;
} // endswitch type
valp->SetGlobal(g);
return valp;
} // end of AllocateValue
/***********************************************************************/
/* Allocate a constant Value converted to newtype. */
/* Can also be used to copy a Value eventually converted. */
/***********************************************************************/
PVAL AllocateValue(PGLOBAL g, PVAL valp, int newtype)
{
PSZ p, sp;
if (newtype == TYPE_VOID) // Means allocate a value of the same type
newtype = valp->GetType();
switch (newtype) {
case TYPE_STRING:
p = (PSZ)PlugSubAlloc(g, NULL, 1 + valp->GetValLen());
if ((sp = valp->GetCharString(p)) != p)
strcpy (p, sp);
valp = new(g) TYPVAL<PSZ>(g, p, valp->GetValLen(), valp->GetValPrec());
break;
case TYPE_SHORT:
valp = new(g) TYPVAL<short>(valp->GetShortValue(), TYPE_SHORT);
break;
case TYPE_INT:
valp = new(g) TYPVAL<int>(valp->GetIntValue(), TYPE_INT);
break;
case TYPE_BIGINT:
valp = new(g) TYPVAL<longlong>(valp->GetBigintValue(), TYPE_BIGINT);
break;
case TYPE_DATE:
valp = new(g) DTVAL(g, valp->GetIntValue());
break;
case TYPE_FLOAT:
valp = new(g) TYPVAL<double>(valp->GetFloatValue(), TYPE_FLOAT);
break;
case TYPE_TINY:
valp = new(g) TYPVAL<char>(valp->GetTinyValue(), TYPE_TINY);
break;
default:
sprintf(g->Message, MSG(BAD_VALUE_TYPE), newtype);
return NULL;
} // endswitch type
valp->SetGlobal(g);
return valp;
} // end of AllocateValue
/* -------------------------- Class VALUE ---------------------------- */
/***********************************************************************/
/* Class VALUE protected constructor. */
/***********************************************************************/
VALUE::VALUE(int type) : Type(type)
{
Fmt = GetFmt(Type);
Xfmt = GetXfmt();
Null = false;
Nullable = false;
Clen = 0;
Prec = 0;
} // end of VALUE constructor
/***********************************************************************/
/* VALUE GetXfmt: returns the extended format to use with typed value. */
/***********************************************************************/
const char *VALUE::GetXfmt(void)
{
const char *fmt;
switch (Type) {
case TYPE_STRING: fmt = "%*s"; break;
case TYPE_SHORT: fmt = "%*hd"; break;
case TYPE_BIGINT: fmt = "%*lld"; break;
case TYPE_FLOAT: fmt = "%*.*lf"; break;
default: fmt = "%*d"; break;
} // endswitch Type
return fmt;
} // end of GetFmt
/* -------------------------- Class TYPVAL ---------------------------- */
/***********************************************************************/
/* TYPVAL public constructor from a constant typed value. */
/***********************************************************************/
template <class TYPE>
TYPVAL<TYPE>::TYPVAL(TYPE n, int type) : VALUE(type)
{
Tval = n;
Clen = sizeof(TYPE);
Prec = (Type == TYPE_FLOAT) ? 2 : 0;
} // end of TYPVAL constructor
/***********************************************************************/
/* TYPVAL public constructor from typed value. */
/***********************************************************************/
template <class TYPE>
TYPVAL<TYPE>::TYPVAL(TYPE n, int prec, int type) : VALUE(type)
{
assert(Type == TYPE_FLOAT);
Tval = n;
Clen = sizeof(TYPE);
Prec = prec;
} // end of TYPVAL constructor
/***********************************************************************/
/* TYPVAL GetValLen: returns the print length of the typed object. */
/***********************************************************************/
template <class TYPE>
int TYPVAL<TYPE>::GetValLen(void)
{
char c[32];
return sprintf(c, Fmt, Tval);
} // end of GetValLen
template <>
int TYPVAL<double>::GetValLen(void)
{
char c[32];
return sprintf(c, Fmt, Prec, Tval);
} // end of GetValLen
/***********************************************************************/
/* TYPVAL SetValue: copy the value of another Value object. */
/* This function allows conversion if chktype is false. */
/***********************************************************************/
template <class TYPE>
bool TYPVAL<TYPE>::SetValue_pval(PVAL valp, bool chktype)
{
if (chktype && Type != valp->GetType())
return true;
if (!(Null = valp->IsNull() && Nullable))
Tval = GetTypedValue(valp);
else
Reset();
return false;
} // end of SetValue
template <>
short TYPVAL<short>::GetTypedValue(PVAL valp)
{return valp->GetShortValue();}
template <>
int TYPVAL<int>::GetTypedValue(PVAL valp)
{return valp->GetIntValue();}
template <>
longlong TYPVAL<longlong>::GetTypedValue(PVAL valp)
{return valp->GetBigintValue();}
template <>
double TYPVAL<double>::GetTypedValue(PVAL valp)
{return valp->GetFloatValue();}
template <>
char TYPVAL<char>::GetTypedValue(PVAL valp)
{return valp->GetTinyValue();}
/***********************************************************************/
/* TYPVAL SetValue: convert chars extracted from a line to TYPE value.*/
/***********************************************************************/
template <class TYPE>
void TYPVAL<TYPE>::SetValue_char(char *p, int n)
{
char *p2, buf[32];
bool minus;
for (p2 = p + n; p < p2 && *p == ' '; p++) ;
for (Tval = 0, minus = false; p < p2; p++)
switch (*p) {
case '-':
minus = true;
case '+':
break;
case '0': Tval = Tval * 10; break;
case '1': Tval = Tval * 10 + 1; break;
case '2': Tval = Tval * 10 + 2; break;
case '3': Tval = Tval * 10 + 3; break;
case '4': Tval = Tval * 10 + 4; break;
case '5': Tval = Tval * 10 + 5; break;
case '6': Tval = Tval * 10 + 6; break;
case '7': Tval = Tval * 10 + 7; break;
case '8': Tval = Tval * 10 + 8; break;
case '9': Tval = Tval * 10 + 9; break;
default:
p = p2;
} // endswitch *p
if (minus && Tval)
Tval = - Tval;
if (trace > 1)
htrc(strcat(strcat(strcpy(buf, " setting %s to: "), Fmt), "\n"),
GetTypeName(Type), Tval);
Null = false;
} // end of SetValue
template <>
void TYPVAL<double>::SetValue_char(char *p, int n)
{
if (p) {
char *p2, buf[32];
for (p2 = p + n; p < p2 && *p == ' '; p++) ;
n = min(p2 - p, 31);
memcpy(buf, p, n);
buf[n] = '\0';
Tval = atof(buf);
if (trace > 1)
htrc(" setting double: '%s' -> %lf\n", buf, Tval);
Null = false;
} else {
Reset();
Null = Nullable;
} // endif p
} // end of SetValue
/***********************************************************************/
/* TYPVAL SetValue: fill a typed value from a string. */
/***********************************************************************/
template <class TYPE>
void TYPVAL<TYPE>::SetValue_psz(PSZ s)
{
if (s) {
Tval = GetTypedValue(s);
Null = false;
} else {
Reset();
Null = Nullable;
} // endif p
} // end of SetValue
template <>
int TYPVAL<int>::GetTypedValue(PSZ s) {return atol(s);}
template <>
short TYPVAL<short>::GetTypedValue(PSZ s) {return (short)atoi(s);}
template <>
longlong TYPVAL<longlong>::GetTypedValue(PSZ s) {return atoll(s);}
template <>
double TYPVAL<double>::GetTypedValue(PSZ s) {return atof(s);}
template <>
char TYPVAL<char>::GetTypedValue(PSZ s) {return (char)atoi(s);}
/***********************************************************************/
/* TYPVAL SetValue: set value with a TYPE extracted from a block. */
/***********************************************************************/
template <class TYPE>
void TYPVAL<TYPE>::SetValue_pvblk(PVBLK blk, int n)
{
Tval = GetTypedValue(blk, n);
Null = false;
} // end of SetValue
template <>
int TYPVAL<int>::GetTypedValue(PVBLK blk, int n)
{return blk->GetIntValue(n);}
template <>
short TYPVAL<short>::GetTypedValue(PVBLK blk, int n)
{return blk->GetShortValue(n);}
template <>
longlong TYPVAL<longlong>::GetTypedValue(PVBLK blk, int n)
{return blk->GetBigintValue(n);}
template <>
double TYPVAL<double>::GetTypedValue(PVBLK blk, int n)
{return blk->GetFloatValue(n);}
template <>
char TYPVAL<char>::GetTypedValue(PVBLK blk, int n)
{return blk->GetTinyValue(n);}
/***********************************************************************/
/* TYPVAL SetBinValue: with bytes extracted from a line. */
/***********************************************************************/
template <class TYPE>
void TYPVAL<TYPE>::SetBinValue(void *p)
{
Tval = *(TYPE *)p;
Null = false;
} // end of SetBinValue
/***********************************************************************/
/* GetBinValue: fill a buffer with the internal binary value. */
/* This function checks whether the buffer length is enough and */
/* returns true if not. Actual filling occurs only if go is true. */
/* Currently used by WriteColumn of binary files. */
/***********************************************************************/
template <class TYPE>
bool TYPVAL<TYPE>::GetBinValue(void *buf, int buflen, bool go)
{
// Test on length was removed here until a variable in column give the
// real field length. For BIN files the field length logically cannot
// be different from the variable length because no conversion is done.
// Therefore this test is useless anyway.
//#if defined(_DEBUG)
// if (sizeof(int) > buflen)
// return true;
//#endif
if (go)
*(TYPE *)buf = Tval;
Null = false;
return false;
} // end of GetBinValue
/***********************************************************************/
/* TYPVAL ShowValue: get string representation of a typed value. */
/***********************************************************************/
template <class TYPE>
char *TYPVAL<TYPE>::ShowValue(char *buf, int len)
{
sprintf(buf, Xfmt, len, Tval);
return buf;
} // end of ShowValue
template <>
char *TYPVAL<double>::ShowValue(char *buf, int len)
{
// TODO: use snprintf to avoid possible overflow
sprintf(buf, Xfmt, len, Prec, Tval);
return buf;
} // end of ShowValue
/***********************************************************************/
/* TYPVAL GetCharString: get string representation of a typed value. */
/***********************************************************************/
template <class TYPE>
char *TYPVAL<TYPE>::GetCharString(char *p)
{
sprintf(p, Fmt, Tval);
return p;
} // end of GetCharString
template <>
char *TYPVAL<double>::GetCharString(char *p)
{
sprintf(p, Fmt, Prec, Tval);
return p;
} // end of GetCharString
/***********************************************************************/
/* TYPVAL GetShortString: get short representation of a typed value. */
/***********************************************************************/
template <class TYPE>
char *TYPVAL<TYPE>::GetShortString(char *p, int n)
{
sprintf(p, "%*hd", n, (short)Tval);
return p;
} // end of GetShortString
/***********************************************************************/
/* TYPVAL GetIntString: get int representation of a typed value. */
/***********************************************************************/
template <class TYPE>
char *TYPVAL<TYPE>::GetIntString(char *p, int n)
{
sprintf(p, "%*d", n, (int)Tval);
return p;
} // end of GetIntString
/***********************************************************************/
/* TYPVAL GetBigintString: get big int representation of a TYPE value.*/
/***********************************************************************/
template <class TYPE>
char *TYPVAL<TYPE>::GetBigintString(char *p, int n)
{
sprintf(p, "%*lld", n, (longlong)Tval);
return p;
} // end of GetBigintString
/***********************************************************************/
/* TYPVAL GetFloatString: get double representation of a typed value. */
/***********************************************************************/
template <class TYPE>
char *TYPVAL<TYPE>::GetFloatString(char *p, int n, int prec)
{
sprintf(p, "%*.*lf", n, (prec < 0) ? 2 : prec, (double)Tval);
return p;
} // end of GetFloatString
/***********************************************************************/
/* TYPVAL GetTinyString: get char representation of a typed value. */
/***********************************************************************/
template <class TYPE>
char *TYPVAL<TYPE>::GetTinyString(char *p, int n)
{
sprintf(p, "%*d", n, (int)(char)Tval);
return p;
} // end of GetIntString
/***********************************************************************/
/* TYPVAL compare value with another Value. */
/***********************************************************************/
template <class TYPE>
bool TYPVAL<TYPE>::IsEqual(PVAL vp, bool chktype)
{
if (this == vp)
return true;
else if (chktype && Type != vp->GetType())
return false;
else if (Null || vp->IsNull())
return false;
else
return (Tval == GetTypedValue(vp));
} // end of IsEqual
/***********************************************************************/
/* FormatValue: This function set vp (a STRING value) to the string */
/* constructed from its own value formated using the fmt format. */
/* This function assumes that the format matches the value type. */
/***********************************************************************/
template <class TYPE>
bool TYPVAL<TYPE>::FormatValue(PVAL vp, char *fmt)
{
char *buf = (char*)vp->GetTo_Val(); // Should be big enough
int n = sprintf(buf, fmt, Tval);
return (n > vp->GetValLen());
} // end of FormatValue
/***********************************************************************/
/* TYPVAL SetFormat function (used to set SELECT output format). */
/***********************************************************************/
template <class TYPE>
bool TYPVAL<TYPE>::SetConstFormat(PGLOBAL g, FORMAT& fmt)
{
char c[32];
fmt.Type[0] = *GetFormatType(Type);
fmt.Length = sprintf(c, Fmt, Tval);
fmt.Prec = Prec;
return false;
} // end of SetConstFormat
/***********************************************************************/
/* Make file output of a typed object. */
/***********************************************************************/
template <class TYPE>
void TYPVAL<TYPE>::Print(PGLOBAL g, FILE *f, uint n)
{
char m[64], buf[12];
memset(m, ' ', n); /* Make margin string */
m[n] = '\0';
if (Null)
fprintf(f, "%s<null>\n", m);
else
fprintf(f, strcat(strcat(strcpy(buf, "%s"), Fmt), "\n"), m, Tval);
} /* end of Print */
/***********************************************************************/
/* Make string output of a int object. */
/***********************************************************************/
template <class TYPE>
void TYPVAL<TYPE>::Print(PGLOBAL g, char *ps, uint z)
{
if (Null)
strcpy(ps, "<null>");
else
sprintf(ps, Fmt, Tval);
} /* end of Print */
/* -------------------------- Class STRING --------------------------- */
/***********************************************************************/
/* STRING public constructor from a constant string. */
/***********************************************************************/
TYPVAL<PSZ>::TYPVAL(PSZ s) : VALUE(TYPE_STRING)
{
Strp = s;
Len = strlen(s);
Clen = Len;
Ci = false;
} // end of STRING constructor
/***********************************************************************/
/* STRING public constructor from char. */
/***********************************************************************/
TYPVAL<PSZ>::TYPVAL(PGLOBAL g, PSZ s, int n, int c)
: VALUE(TYPE_STRING)
{
assert(Type == TYPE_STRING && (g || s));
Len = (g) ? n : strlen(s);
if (g && !s) {
Strp = (char *)PlugSubAlloc(g, NULL, Len + 1);
Strp[Len] = '\0';
} else
Strp = s;
Clen = Len;
Ci = (c != 0);
} // end of STRING constructor
/***********************************************************************/
/* STRING SetValue: copy the value of another Value object. */
/***********************************************************************/
bool TYPVAL<PSZ>::SetValue_pval(PVAL valp, bool chktype)
{
if (chktype && (valp->GetType() != Type || valp->GetSize() > Len))
return true;
char buf[32];
if (!(Null = valp->IsNull() && Nullable))
strncpy(Strp, valp->GetCharString(buf), Len);
else
Reset();
return false;
} // end of SetValue_pval
/***********************************************************************/
/* STRING SetValue: fill string with chars extracted from a line. */
/***********************************************************************/
void TYPVAL<PSZ>::SetValue_char(char *p, int n)
{
if (p) {
n = min(n, Len);
strncpy(Strp, p, n);
for (p = Strp + n - 1; (*p == ' ' || *p == '\0') && p >= Strp; p--) ;
*(++p) = '\0';
if (trace > 1)
htrc(" Setting string to: '%s'\n", Strp);
Null = false;
} else {
Reset();
Null = Nullable;
} // endif p
} // end of SetValue_char
/***********************************************************************/
/* STRING SetValue: fill string with another string. */
/***********************************************************************/
void TYPVAL<PSZ>::SetValue_psz(PSZ s)
{
if (s) {
strncpy(Strp, s, Len);
Null = false;
} else {
Reset();
Null = Nullable;
} // endif s
} // end of SetValue_psz
/***********************************************************************/
/* STRING SetValue: fill string with a string extracted from a block. */
/***********************************************************************/
void TYPVAL<PSZ>::SetValue_pvblk(PVBLK blk, int n)
{
strncpy(Strp, blk->GetCharValue(n), Len);
} // end of SetValue_pvblk
/***********************************************************************/
/* STRING SetValue: get the character representation of an integer. */
/***********************************************************************/
void TYPVAL<PSZ>::SetValue(int n)
{
char buf[16];
PGLOBAL& g = Global;
int k = sprintf(buf, "%d", n);
if (k > Len) {
sprintf(g->Message, MSG(VALSTR_TOO_LONG), buf, Len);
longjmp(g->jumper[g->jump_level], 138);
} else
SetValue_psz(buf);
Null = false;
} // end of SetValue
/***********************************************************************/
/* STRING SetValue: get the character representation of a short int. */
/***********************************************************************/
void TYPVAL<PSZ>::SetValue(short i)
{
SetValue((int)i);
Null = false;
} // end of SetValue
/***********************************************************************/
/* STRING SetValue: get the character representation of a big integer.*/
/***********************************************************************/
void TYPVAL<PSZ>::SetValue(longlong n)
{
char buf[24];
PGLOBAL& g = Global;
int k = sprintf(buf, "%lld", n);
if (k > Len) {
sprintf(g->Message, MSG(VALSTR_TOO_LONG), buf, Len);
longjmp(g->jumper[g->jump_level], 138);
} else
SetValue_psz(buf);
Null = false;
} // end of SetValue
/***********************************************************************/
/* STRING SetValue: get the character representation of a double. */
/***********************************************************************/
void TYPVAL<PSZ>::SetValue(double f)
{
char *p, buf[32];
PGLOBAL& g = Global;
int k = sprintf(buf, "%lf", f);
for (p = buf + k - 1; p >= buf; p--)
if (*p == '0') {
*p = 0;
k--;
} else
break;
if (k > Len) {
sprintf(g->Message, MSG(VALSTR_TOO_LONG), buf, Len);
longjmp(g->jumper[g->jump_level], 138);
} else
SetValue_psz(buf);
Null = false;
} // end of SetValue
/***********************************************************************/
/* STRING SetValue: get the character representation of a tiny int. */
/***********************************************************************/
void TYPVAL<PSZ>::SetValue(char c)
{
SetValue((int)c);
Null = false;
} // end of SetValue
/***********************************************************************/
/* STRING SetBinValue: fill string with chars extracted from a line. */
/***********************************************************************/
void TYPVAL<PSZ>::SetBinValue(void *p)
{
SetValue_char((char *)p, Len);
} // end of SetBinValue
/***********************************************************************/
/* GetBinValue: fill a buffer with the internal binary value. */
/* This function checks whether the buffer length is enough and */
/* returns true if not. Actual filling occurs only if go is true. */
/* Currently used by WriteColumn of binary files. */
/***********************************************************************/
bool TYPVAL<PSZ>::GetBinValue(void *buf, int buflen, bool go)
{
int len = (Null) ? 0 : strlen(Strp);
if (len > buflen)
return true;
else if (go) {
memset(buf, ' ', buflen);
memcpy(buf, Strp, len);
} // endif go
return false;
} // end of GetBinValue
/***********************************************************************/
/* STRING ShowValue: get string representation of a char value. */
/***********************************************************************/
char *TYPVAL<PSZ>::ShowValue(char *buf, int len)
{
return Strp;
} // end of ShowValue
/***********************************************************************/
/* STRING GetCharString: get string representation of a char value. */
/***********************************************************************/
char *TYPVAL<PSZ>::GetCharString(char *p)
{
return Strp;
} // end of GetCharString
/***********************************************************************/
/* STRING GetShortString: get short representation of a char value. */
/***********************************************************************/
char *TYPVAL<PSZ>::GetShortString(char *p, int n)
{
sprintf(p, "%*hd", n, (short)(Null ? 0 : atoi(Strp)));
return p;
} // end of GetShortString
/***********************************************************************/
/* STRING GetIntString: get int representation of a char value. */
/***********************************************************************/
char *TYPVAL<PSZ>::GetIntString(char *p, int n)
{
sprintf(p, "%*ld", n, (Null) ? 0 : atol(Strp));
return p;
} // end of GetIntString
/***********************************************************************/
/* STRING GetBigintString: get big int representation of a char value.*/
/***********************************************************************/
char *TYPVAL<PSZ>::GetBigintString(char *p, int n)
{
sprintf(p, "%*lld", n, (Null) ? 0 : atoll(Strp));
return p;
} // end of GetBigintString
/***********************************************************************/
/* STRING GetFloatString: get double representation of a char value. */
/***********************************************************************/
char *TYPVAL<PSZ>::GetFloatString(char *p, int n, int prec)
{
sprintf(p, "%*.*lf", n, (prec < 0) ? 2 : prec, Null ? 0 : atof(Strp));
return p;
} // end of GetFloatString
/***********************************************************************/
/* STRING GetTinyString: get tiny int representation of a char value. */
/***********************************************************************/
char *TYPVAL<PSZ>::GetTinyString(char *p, int n)
{
sprintf(p, "%*d", n, (Null) ? 0 : (char)atoi(Strp));
return p;
} // end of GetIntString
/***********************************************************************/
/* STRING compare value with another Value. */
/***********************************************************************/
bool TYPVAL<PSZ>::IsEqual(PVAL vp, bool chktype)
{
if (this == vp)
return true;
else if (chktype && Type != vp->GetType())
return false;
else if (Null || vp->IsNull())
return false;
char buf[32];
if (Ci || vp->IsCi())
return !stricmp(Strp, vp->GetCharString(buf));
else // (!Ci)
return !strcmp(Strp, vp->GetCharString(buf));
} // end of IsEqual
/***********************************************************************/
/* FormatValue: This function set vp (a STRING value) to the string */
/* constructed from its own value formated using the fmt format. */
/* This function assumes that the format matches the value type. */
/***********************************************************************/
bool TYPVAL<PSZ>::FormatValue(PVAL vp, char *fmt)
{
char *buf = (char*)vp->GetTo_Val(); // Should be big enough
int n = sprintf(buf, fmt, Strp);
return (n > vp->GetValLen());
} // end of FormatValue
/***********************************************************************/
/* STRING SetFormat function (used to set SELECT output format). */
/***********************************************************************/
bool TYPVAL<PSZ>::SetConstFormat(PGLOBAL g, FORMAT& fmt)
{
fmt.Type[0] = 'C';
fmt.Length = Len;
fmt.Prec = 0;
return false;
} // end of SetConstFormat
/* -------------------------- Class DTVAL ---------------------------- */
/***********************************************************************/
/* DTVAL public constructor for new void values. */
/***********************************************************************/
DTVAL::DTVAL(PGLOBAL g, int n, int prec, PSZ fmt)
: TYPVAL<int>((int)0, TYPE_DATE)
{
if (!fmt) {
Pdtp = NULL;
Sdate = NULL;
DefYear = 0;
Len = n;
} else
SetFormat(g, fmt, n, prec);
//Type = TYPE_DATE;
} // end of DTVAL constructor
/***********************************************************************/
/* DTVAL public constructor from int. */
/***********************************************************************/
DTVAL::DTVAL(PGLOBAL g, int n) : TYPVAL<int>(n, TYPE_DATE)
{
Pdtp = NULL;
Len = 19;
//Type = TYPE_DATE;
Sdate = NULL;
DefYear = 0;
} // end of DTVAL constructor
/***********************************************************************/
/* Set format so formatted dates can be converted on input/output. */
/***********************************************************************/
bool DTVAL::SetFormat(PGLOBAL g, PSZ fmt, int len, int year)
{
Pdtp = MakeDateFormat(g, fmt, true, true, (year > 9999) ? 1 : 0);
Sdate = (char*)PlugSubAlloc(g, NULL, len + 1);
DefYear = (int)((year > 9999) ? (year - 10000) : year);
Len = len;
return false;
} // end of SetFormat
/***********************************************************************/
/* Set format from the format of another date value. */
/***********************************************************************/
bool DTVAL::SetFormat(PGLOBAL g, PVAL valp)
{
DTVAL *vp;
if (valp->GetType() != TYPE_DATE) {
sprintf(g->Message, MSG(NO_FORMAT_TYPE), valp->GetType());
return true;
} else
vp = (DTVAL*)valp;
Len = vp->Len;
Pdtp = vp->Pdtp;
Sdate = (char*)PlugSubAlloc(g, NULL, Len + 1);
DefYear = vp->DefYear;
return false;
} // end of SetFormat
/***********************************************************************/
/* We need TimeShift because the mktime C function does a correction */
/* for local time zone that we want to override for DB operations. */
/***********************************************************************/
void DTVAL::SetTimeShift(void)
{
struct tm dtm;
memset(&dtm, 0, sizeof(dtm));
dtm.tm_mday=2;
dtm.tm_mon=0;
dtm.tm_year=70;
Shift = (int)mktime(&dtm) - 86400;
if (trace)
htrc("DTVAL Shift=%d\n", Shift);
} // end of SetTimeShift
/***********************************************************************/
/* GetGmTime: returns a pointer to a static tm structure obtained */
/* though the gmtime C function. The purpose of this function is to */
/* extend the range of valid dates by accepting negative time values. */
/***********************************************************************/
#include "sql_class.h"
#include "sql_time.h"
static void TIME_to_localtime(struct tm *tm, const MYSQL_TIME *ltime)
{
bzero(tm, sizeof(*tm));
tm->tm_year= ltime->year - 1900;
tm->tm_mon= ltime->month - 1;
tm->tm_mday= ltime->day;
tm->tm_hour= ltime->hour;
tm->tm_min= ltime->minute;
tm->tm_sec= ltime->second;
}
static struct tm *gmtime_mysql(const time_t *timep, struct tm *tm)
{
MYSQL_TIME ltime;
thd_gmt_sec_to_TIME(current_thd, <ime, (my_time_t) *timep);
TIME_to_localtime(tm, <ime);
return tm;
}
struct tm *DTVAL::GetGmTime(struct tm *tm_buffer)
{
struct tm *datm;
time_t t = (time_t)Tval;
if (Tval < 0) {
int n;
for (n = 0; t < 0; n += 4)
t += FOURYEARS;
datm = gmtime_mysql(&t, tm_buffer);
if (datm)
datm->tm_year -= n;
} else
datm = gmtime_mysql(&t, tm_buffer);
return datm;
} // end of GetGmTime
/***********************************************************************/
/* MakeTime: calculates a date value from a tm structures using the */
/* mktime C function. The purpose of this function is to extend the */
/* range of valid dates by accepting to set negative time values. */
/***********************************************************************/
static time_t mktime_mysql(struct tm *ptm)
{
MYSQL_TIME ltime;
localtime_to_TIME(<ime, ptm);
ltime.time_type= MYSQL_TIMESTAMP_DATETIME;
uint error_code;
time_t t= TIME_to_timestamp(current_thd, <ime, &error_code);
return error_code ? (time_t) -1 : t;
}
bool DTVAL::MakeTime(struct tm *ptm)
{
int n, y = ptm->tm_year;
time_t t = mktime_mysql(ptm);
if (trace > 1)
htrc("MakeTime from (%d,%d,%d,%d,%d,%d)\n",
ptm->tm_year, ptm->tm_mon, ptm->tm_mday,
ptm->tm_hour, ptm->tm_min, ptm->tm_sec);
if (t == -1) {
if (y < 1 || y > 71)
return true;
for (n = 0; t == -1 && n < 20; n++) {
ptm->tm_year += 4;
t = mktime_mysql(ptm);
} // endfor t
if (t == -1)
return true;
if ((t -= (n * FOURYEARS)) > 2000000000)
return true;
}
Tval= (int) t;
if (trace > 1)
htrc("MakeTime Ival=%d\n", Tval);
return false;
} // end of MakeTime
/***********************************************************************/
/* Make a time_t datetime from its components (YY, MM, DD, hh, mm, ss) */
/***********************************************************************/
bool DTVAL::MakeDate(PGLOBAL g, int *val, int nval)
{
int i, m;
int n;
bool rc = false;
struct tm datm;
bzero(&datm, sizeof(datm));
datm.tm_mday=1;
datm.tm_mon=0;
datm.tm_year=70;
if (trace > 1)
htrc("MakeDate from(%d,%d,%d,%d,%d,%d) nval=%d\n",
val[0], val[1], val[2], val[3], val[4], val[5], nval);
for (i = 0; i < nval; i++) {
n = val[i];
// if (trace > 1)
// htrc("i=%d n=%d\n", i, n);
switch (i) {
case 0:
if (n >= 1900)
n -= 1900;
datm.tm_year = n;
// if (trace > 1)
// htrc("n=%d tm_year=%d\n", n, datm.tm_year);
break;
case 1:
// If mktime handles apparently correctly large or negative
// day values, it is not the same for months. Therefore we
// do the ajustment here, thus mktime has not to do it.
if (n > 0) {
m = (n - 1) % 12;
n = (n - 1) / 12;
} else {
m = 11 + n % 12;
n = n / 12 - 1;
} // endfi n
datm.tm_mon = m;
datm.tm_year += n;
// if (trace > 1)
// htrc("n=%d m=%d tm_year=%d tm_mon=%d\n", n, m, datm.tm_year, datm.tm_mon);
break;
case 2:
// For days, big or negative values may also cause problems
m = n % 1461;
n = 4 * (n / 1461);
if (m < 0) {
m += 1461;
n -= 4;
} // endif m
datm.tm_mday = m;
datm.tm_year += n;
// if (trace > 1)
// htrc("n=%d m=%d tm_year=%d tm_mon=%d\n", n, m, datm.tm_year, datm.tm_mon);
break;
case 3: datm.tm_hour = n; break;
case 4: datm.tm_min = n; break;
case 5: datm.tm_sec = n; break;
} // endswitch i
} // endfor i
if (trace > 1)
htrc("MakeDate datm=(%d,%d,%d,%d,%d,%d)\n",
datm.tm_year, datm.tm_mon, datm.tm_mday,
datm.tm_hour, datm.tm_min, datm.tm_sec);
// Pass g to have an error return or NULL to set invalid dates to 0
if (MakeTime(&datm))
if (g) {
strcpy(g->Message, MSG(BAD_DATETIME));
rc = true;
} else
Tval = 0;
return rc;
} // end of MakeDate
/***********************************************************************/
/* DTVAL SetValue: copy the value of another Value object. */
/* This function allows conversion if chktype is false. */
/***********************************************************************/
bool DTVAL::SetValue_pval(PVAL valp, bool chktype)
{
if (chktype && Type != valp->GetType())
return true;
if (!(Null = valp->IsNull() && Nullable)) {
if (Pdtp && !valp->IsTypeNum()) {
int ndv;
int dval[6];
ndv = ExtractDate(valp->GetCharValue(), Pdtp, DefYear, dval);
MakeDate(NULL, dval, ndv);
} else
Tval = valp->GetIntValue();
} else
Reset();
return false;
} // end of SetValue
/***********************************************************************/
/* SetValue: convert chars extracted from a line to date value. */
/***********************************************************************/
void DTVAL::SetValue_char(char *p, int n)
{
if (Pdtp) {
char *p2;
int ndv;
int dval[6];
// Trim trailing blanks
for (p2 = p + n -1; p < p2 && *p2 == ' '; p2--) ;
n = min(p2 - p + 1, Len);
memcpy(Sdate, p, n);
Sdate[n] = '\0';
ndv = ExtractDate(Sdate, Pdtp, DefYear, dval);
MakeDate(NULL, dval, ndv);
if (trace > 1)
htrc(" setting date: '%s' -> %d\n", Sdate, Tval);
Null = false;
} else
TYPVAL<int>::SetValue_char(p, n);
} // end of SetValue
/***********************************************************************/
/* SetValue: convert a char string to date value. */
/***********************************************************************/
void DTVAL::SetValue_psz(PSZ p)
{
if (Pdtp) {
int ndv;
int dval[6];
strncpy(Sdate, p, Len);
Sdate[Len] = '\0';
ndv = ExtractDate(Sdate, Pdtp, DefYear, dval);
MakeDate(NULL, dval, ndv);
if (trace > 1)
htrc(" setting date: '%s' -> %d\n", Sdate, Tval);
Null = false;
} else
TYPVAL<int>::SetValue_psz(p);
} // end of SetValue
/***********************************************************************/
/* DTVAL SetValue: set value with a value extracted from a block. */
/***********************************************************************/
void DTVAL::SetValue_pvblk(PVBLK blk, int n)
{
if (Pdtp && !::IsTypeNum(blk->GetType())) {
int ndv;
int dval[6];
ndv = ExtractDate(blk->GetCharValue(n), Pdtp, DefYear, dval);
MakeDate(NULL, dval, ndv);
} else
Tval = blk->GetIntValue(n);
} // end of SetValue
/***********************************************************************/
/* DTVAL GetCharString: get string representation of a date value. */
/***********************************************************************/
char *DTVAL::GetCharString(char *p)
{
if (Pdtp) {
size_t n = 0;
struct tm tm, *ptm= GetGmTime(&tm);
if (ptm)
n = strftime(Sdate, Len + 1, Pdtp->OutFmt, ptm);
if (!n) {
*Sdate = '\0';
strncat(Sdate, "Error", Len + 1);
} // endif n
return Sdate;
} else
sprintf(p, "%d", Tval);
Null = false;
return p;
} // end of GetCharString
/***********************************************************************/
/* DTVAL ShowValue: get string representation of a date value. */
/***********************************************************************/
char *DTVAL::ShowValue(char *buf, int len)
{
if (Pdtp) {
char *p;
size_t m, n = 0;
struct tm tm, *ptm = GetGmTime(&tm);
if (Len < len) {
p = buf;
m = len;
} else {
p = Sdate;
m = Len + 1;
} // endif Len
if (ptm)
n = strftime(p, m, Pdtp->OutFmt, ptm);
if (!n) {
*p = '\0';
strncat(p, "Error", m);
} // endif n
return p;
} else
return TYPVAL<int>::ShowValue(buf, len);
} // end of ShowValue
/***********************************************************************/
/* Returns a member of the struct tm representation of the date. */
/***********************************************************************/
bool DTVAL::GetTmMember(OPVAL op, int& mval)
{
bool rc = false;
struct tm tm, *ptm = GetGmTime(&tm);
switch (op) {
case OP_MDAY: mval = ptm->tm_mday; break;
case OP_MONTH: mval = ptm->tm_mon + 1; break;
case OP_YEAR: mval = ptm->tm_year + 1900; break;
case OP_WDAY: mval = ptm->tm_wday + 1; break;
case OP_YDAY: mval = ptm->tm_yday + 1; break;
case OP_QUART: mval = ptm->tm_mon / 3 + 1; break;
default:
rc = true;
} // endswitch op
return rc;
} // end of GetTmMember
/***********************************************************************/
/* Calculates the week number of the year for the internal date value.*/
/* The International Standard ISO 8601 has decreed that Monday shall */
/* be the first day of the week. A week that lies partly in one year */
/* and partly in another is assigned a number in the year in which */
/* most of its days lie. That means that week number 1 of any year is */
/* the week that contains the January 4th. */
/***********************************************************************/
bool DTVAL::WeekNum(PGLOBAL g, int& nval)
{
// w is the start of the week SUN=0, MON=1, etc.
int m, n, w = nval % 7;
struct tm tm, *ptm = GetGmTime(&tm);
// Which day is January 4th of this year?
m = (367 + ptm->tm_wday - ptm->tm_yday) % 7;
// When does the first week begins?
n = 3 - (7 + m - w) % 7;
// Now calculate the week number
if (!(nval = (7 + ptm->tm_yday - n) / 7))
nval = 52;
// Everything should be Ok
return false;
} // end of WeekNum
/***********************************************************************/
/* FormatValue: This function set vp (a STRING value) to the string */
/* constructed from its own value formated using the fmt format. */
/* This function assumes that the format matches the value type. */
/***********************************************************************/
bool DTVAL::FormatValue(PVAL vp, char *fmt)
{
char *buf = (char*)vp->GetTo_Val(); // Should be big enough
struct tm tm, *ptm = GetGmTime(&tm);
if (trace)
htrc("FormatValue: ptm=%p len=%d\n", ptm, vp->GetValLen());
if (ptm) {
size_t n = strftime(buf, vp->GetValLen(), fmt, ptm);
if (trace)
htrc("strftime: n=%d buf=%s\n", n, (n) ? buf : "???");
return (n == 0);
} else
return true;
} // end of FormatValue
/* -------------------------- End of Value --------------------------- */