~drizzle-trunk/drizzle/development

/* Copyright (C) 2000 MySQL AB

   This program is free software; you can redistribute it and/or modify

   it under the terms of the GNU General Public License as published by

   the Free Software Foundation; version 2 of the License.

   This program is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License

   along with this program; if not, write to the Free Software

   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA */

/* There may be prolems include all of theese. Try to test in

   configure with ones are needed? */

/*  This is needed for the definitions of strchr... on solaris */

#ifndef DRIZZLED_INTERNAL_M_STRING_H

#define DRIZZLED_INTERNAL_M_STRING_H

#if defined(HAVE_STRINGS_H)

#include <strings.h>

#endif

#if defined(HAVE_STRING_H)

#include <string.h>

#endif

#include <stdlib.h>

#include <stddef.h>

#include <cassert>

#include <limits.h>

#include <ctype.h>

/*  This is needed for the definitions of memcpy... on solaris */

#if defined(HAVE_MEMORY_H) && !defined(__cplusplus)

#include <memory.h>

#endif

namespace drizzled

{

namespace internal

{

extern void bmove_upp(unsigned char *dst,const unsigned char *src,size_t len);

extern	void bchange(unsigned char *dst,size_t old_len,const unsigned char *src,

		     size_t new_len,size_t tot_len);

extern	char *strfield(char *src,int fields,int chars,int blanks,

			   int tabch);

extern	char *strfill(char * s,size_t len,char fill);

extern	char *strkey(char *dst,char *head,char *tail,char *flags);

extern	char *strmake(char *dst,const char *src,size_t length);

extern	char *strsuff(const char *src,const char *suffix);

extern	char *strxcat(char *dst,const char *src, ...);

extern	char *strxmov(char *dst,const char *src, ...);

extern	char *strxcpy(char *dst,const char *src, ...);

extern	char *strxncat(char *dst,size_t len, const char *src, ...);

extern	char *strxncpy(char *dst,size_t len, const char *src, ...);

/* Conversion routines */

typedef enum {

  MY_GCVT_ARG_FLOAT,

  MY_GCVT_ARG_DOUBLE

} my_gcvt_arg_type;

double my_strtod(const char *str, char **end, int *error);

double my_atof(const char *nptr);

size_t my_fcvt(double x, int precision, char *to, bool *error);

size_t my_gcvt(double x, my_gcvt_arg_type type, int width, char *to,

               bool *error);

#define NOT_FIXED_DEC (uint8_t)31

/*

  The longest string my_fcvt can return is 311 + "precision" bytes.

  Here we assume that we never cal my_fcvt() with precision >= NOT_FIXED_DEC

  (+ 1 byte for the terminating '\0').

*/

#define FLOATING_POINT_BUFFER (311 + NOT_FIXED_DEC)

/*

  We want to use the 'e' format in some cases even if we have enough space

  for the 'f' one just to mimic sprintf("%.15g") behavior for large integers,

  and to improve it for numbers < 10^(-4).

  That is, for |x| < 1 we require |x| >= 10^(-15), and for |x| > 1 we require

  it to be integer and be <= 10^DBL_DIG for the 'f' format to be used.

  We don't lose precision, but make cases like "1e200" or "0.00001" look nicer.

*/

#define MAX_DECPT_FOR_F_FORMAT DBL_DIG

/*

  The maximum possible field width for my_gcvt() conversion.

  (DBL_DIG + 2) significant digits + sign + "." + ("e-NNN" or

  MAX_DECPT_FOR_F_FORMAT zeros for cases when |x|<1 and the 'f' format is used).

*/

#define MY_GCVT_MAX_FIELD_WIDTH (DBL_DIG + 4 + cmax(5, MAX_DECPT_FOR_F_FORMAT))

extern char *llstr(int64_t value,char *buff);

extern char *ullstr(int64_t value,char *buff);

extern char *int2str(int32_t val, char *dst, int radix, int upcase);

extern char *int10_to_str(int32_t val,char *dst,int radix);

int64_t my_strtoll10(const char *nptr, char **endptr, int *error);

extern char *int64_t2str(int64_t val,char *dst,int radix);

extern char *int64_t10_to_str(int64_t val,char *dst,int radix);

/**

  Skip trailing space.

   @param     ptr   pointer to the input string

   @param     len   the length of the string

   @return          the last non-space character

*/

static inline const unsigned char *

skip_trailing_space(const unsigned char *ptr, size_t len)

{

  const unsigned char *end= ptr + len;

  while (end > ptr && isspace(*--end))

    continue;

  return end+1;

}

} /* namespace internal */

} /* namespace drizzled */

#endif /* DRIZZLED_INTERNAL_M_STRING_H */