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479bd5a6fe
strmake_buf() macro should only be used with char[] arrays, and never with char* pointers. To distinguish between the two we create a new variable of the same type and initialize it using array initializer, this causes compilation failure with pointers. The variable is unused and will be removed by the compiler. It's enough to do this check only with gcc, so it doesn't have to be portable.
239 lines
7.4 KiB
C
239 lines
7.4 KiB
C
/*
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Copyright (c) 2000, 2012, Oracle and/or its affiliates.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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/* There may be problems included in all of these. Try to test in
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configure which ones are needed? */
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/* This is needed for the definitions of strchr... on solaris */
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#ifndef _m_string_h
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#define _m_string_h
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#include "my_decimal_limits.h"
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#ifndef __USE_GNU
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#define __USE_GNU /* We want to use stpcpy */
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#endif
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#if defined(HAVE_STRINGS_H)
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#include <strings.h>
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#endif
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#if defined(HAVE_STRING_H)
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#include <string.h>
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#endif
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/* This is needed for the definitions of memcpy... on solaris */
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#if defined(HAVE_MEMORY_H) && !defined(__cplusplus)
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#include <memory.h>
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#endif
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#if !defined(HAVE_MEMCPY) && !defined(HAVE_MEMMOVE)
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# define memcpy(d, s, n) bcopy ((s), (d), (n))
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# define memset(A,C,B) bfill((A),(B),(C))
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# define memmove(d, s, n) bmove ((d), (s), (n))
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#elif defined(HAVE_MEMMOVE)
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# define bmove(d, s, n) memmove((d), (s), (n))
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#endif
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/* Unixware 7 */
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#if !defined(HAVE_BFILL)
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# define bfill(A,B,C) memset((A),(C),(B))
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#endif
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# define bmove_align(A,B,C) memcpy((A),(B),(C))
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# define bcmp(A,B,C) memcmp((A),(B),(C))
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#if !defined(bzero)
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# define bzero(A,B) memset((A),0,(B))
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#endif
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#if defined(__cplusplus)
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extern "C" {
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#endif
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#ifdef DBUG_OFF
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#if defined(HAVE_STPCPY) && MY_GNUC_PREREQ(3, 4) && !defined(__INTEL_COMPILER)
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#define strmov(A,B) __builtin_stpcpy((A),(B))
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#elif defined(HAVE_STPCPY)
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#define strmov(A,B) stpcpy((A),(B))
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#endif
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#endif
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/* Declared in int2str() */
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extern const char _dig_vec_upper[];
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extern const char _dig_vec_lower[];
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extern char *strmov_overlapp(char *dest, const char *src);
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#if defined(_lint) || defined(FORCE_INIT_OF_VARS)
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#define LINT_INIT_STRUCT(var) bzero(&var, sizeof(var)) /* No uninitialize-warning */
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#else
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#define LINT_INIT_STRUCT(var)
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#endif
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/* Prototypes for string functions */
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extern void bmove_upp(uchar *dst,const uchar *src,size_t len);
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extern void bchange(uchar *dst,size_t old_len,const uchar *src,
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size_t new_len,size_t tot_len);
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extern void strappend(char *s,size_t len,pchar fill);
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extern char *strend(const char *s);
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extern char *strcend(const char *, pchar);
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extern char *strfill(char * s,size_t len,pchar fill);
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extern char *strmake(char *dst,const char *src,size_t length);
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#if !defined(__GNUC__) || (__GNUC__ < 4)
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#define strmake_buf(D,S) strmake(D, S, sizeof(D) - 1)
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#else
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#define strmake_buf(D,S) ({ \
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typeof (D) __x __attribute__((unused)) = { 2 }; \
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strmake(D, S, sizeof(D) - 1); \
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})
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#endif
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#ifndef strmov
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extern char *strmov(char *dst,const char *src);
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#endif
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extern char *strnmov(char *dst, const char *src, size_t n);
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extern char *strcont(const char *src, const char *set);
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extern char *strxmov(char *dst, const char *src, ...);
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extern char *strxnmov(char *dst, size_t len, const char *src, ...);
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/* Prototypes of normal stringfunctions (with may ours) */
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#ifndef HAVE_STRNLEN
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extern size_t strnlen(const char *s, size_t n);
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#endif
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extern int is_prefix(const char *, const char *);
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/* Conversion routines */
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typedef enum {
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MY_GCVT_ARG_FLOAT,
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MY_GCVT_ARG_DOUBLE
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} my_gcvt_arg_type;
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double my_strtod(const char *str, char **end, int *error);
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double my_atof(const char *nptr);
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size_t my_fcvt(double x, int precision, char *to, my_bool *error);
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size_t my_gcvt(double x, my_gcvt_arg_type type, int width, char *to,
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my_bool *error);
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/*
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The longest string my_fcvt can return is 311 + "precision" bytes.
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Here we assume that we never cal my_fcvt() with
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precision >= DECIMAL_NOT_SPECIFIED
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(+ 1 byte for the terminating '\0').
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*/
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#define FLOATING_POINT_BUFFER (311 + DECIMAL_NOT_SPECIFIED)
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/*
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We want to use the 'e' format in some cases even if we have enough space
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for the 'f' one just to mimic sprintf("%.15g") behavior for large integers,
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and to improve it for numbers < 10^(-4).
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That is, for |x| < 1 we require |x| >= 10^(-15), and for |x| > 1 we require
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it to be integer and be <= 10^DBL_DIG for the 'f' format to be used.
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We don't lose precision, but make cases like "1e200" or "0.00001" look nicer.
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*/
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#define MAX_DECPT_FOR_F_FORMAT DBL_DIG
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/*
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The maximum possible field width for my_gcvt() conversion.
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(DBL_DIG + 2) significant digits + sign + "." + ("e-NNN" or
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MAX_DECPT_FOR_F_FORMAT zeros for cases when |x|<1 and the 'f' format is used).
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*/
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#define MY_GCVT_MAX_FIELD_WIDTH (DBL_DIG + 4 + MY_MAX(5, MAX_DECPT_FOR_F_FORMAT)) \
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extern char *llstr(longlong value,char *buff);
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extern char *ullstr(longlong value,char *buff);
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#ifndef HAVE_STRTOUL
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extern long strtol(const char *str, char **ptr, int base);
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extern ulong strtoul(const char *str, char **ptr, int base);
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#endif
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extern char *int2str(long val, char *dst, int radix, int upcase);
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extern char *int10_to_str(long val,char *dst,int radix);
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extern char *str2int(const char *src,int radix,long lower,long upper,
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long *val);
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longlong my_strtoll10(const char *nptr, char **endptr, int *error);
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#if SIZEOF_LONG == SIZEOF_LONG_LONG
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#define ll2str(A,B,C,D) int2str((A),(B),(C),(D))
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#define longlong10_to_str(A,B,C) int10_to_str((A),(B),(C))
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#undef strtoll
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#define strtoll(A,B,C) strtol((A),(B),(C))
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#define strtoull(A,B,C) strtoul((A),(B),(C))
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#ifndef HAVE_STRTOULL
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#define HAVE_STRTOULL
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#endif
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#ifndef HAVE_STRTOLL
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#define HAVE_STRTOLL
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#endif
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#else
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#ifdef HAVE_LONG_LONG
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extern char *ll2str(longlong val,char *dst,int radix, int upcase);
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extern char *longlong10_to_str(longlong val,char *dst,int radix);
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#if (!defined(HAVE_STRTOULL) || defined(NO_STRTOLL_PROTO))
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extern longlong strtoll(const char *str, char **ptr, int base);
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extern ulonglong strtoull(const char *str, char **ptr, int base);
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#endif
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#endif
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#endif
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#define longlong2str(A,B,C) ll2str((A),(B),(C),1)
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#if defined(__cplusplus)
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}
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#endif
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#include <mysql/plugin.h>
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#define STRING_WITH_LEN(X) (X), ((size_t) (sizeof(X) - 1))
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#define USTRING_WITH_LEN(X) ((uchar*) X), ((size_t) (sizeof(X) - 1))
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#define C_STRING_WITH_LEN(X) ((char *) (X)), ((size_t) (sizeof(X) - 1))
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#define LEX_STRING_WITH_LEN(X) (X).str, (X).length
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typedef struct st_mysql_const_lex_string LEX_CSTRING;
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/* A variant with const and unsigned */
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struct st_mysql_const_unsigned_lex_string
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{
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const uchar *str;
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size_t length;
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};
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typedef struct st_mysql_const_unsigned_lex_string LEX_CUSTRING;
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static inline void lex_string_set(LEX_CSTRING *lex_str, const char *c_str)
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{
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lex_str->str= c_str;
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lex_str->length= strlen(c_str);
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}
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static inline void lex_string_set3(LEX_CSTRING *lex_str, const char *c_str,
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size_t len)
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{
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lex_str->str= c_str;
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lex_str->length= len;
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}
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#ifdef __cplusplus
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static inline char *safe_str(char *str)
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{ return str ? str : const_cast<char*>(""); }
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#endif
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static inline const char *safe_str(const char *str)
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{ return str ? str : ""; }
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static inline size_t safe_strlen(const char *str)
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{ return str ? strlen(str) : 0; }
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#endif
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