/* Copyright (C) 2005-2006 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include "mysql_priv.h" #include #ifndef MYSQL_CLIENT /* report result of decimal operation SYNOPSIS decimal_operation_results() result decimal library return code (E_DEC_* see include/decimal.h) TODO Fix error messages RETURN result */ int decimal_operation_results(int result) { switch (result) { case E_DEC_OK: break; case E_DEC_TRUNCATED: push_warning_printf(current_thd, MYSQL_ERROR::WARN_LEVEL_WARN, WARN_DATA_TRUNCATED, ER(WARN_DATA_TRUNCATED), "", (long)-1); break; case E_DEC_OVERFLOW: push_warning_printf(current_thd, MYSQL_ERROR::WARN_LEVEL_ERROR, ER_TRUNCATED_WRONG_VALUE, ER(ER_TRUNCATED_WRONG_VALUE), "DECIMAL", ""); break; case E_DEC_DIV_ZERO: push_warning_printf(current_thd, MYSQL_ERROR::WARN_LEVEL_ERROR, ER_DIVISION_BY_ZERO, ER(ER_DIVISION_BY_ZERO)); break; case E_DEC_BAD_NUM: push_warning_printf(current_thd, MYSQL_ERROR::WARN_LEVEL_ERROR, ER_TRUNCATED_WRONG_VALUE_FOR_FIELD, ER(ER_TRUNCATED_WRONG_VALUE_FOR_FIELD), "decimal", "", "", (long)-1); break; case E_DEC_OOM: my_error(ER_OUT_OF_RESOURCES, MYF(0)); break; default: DBUG_ASSERT(0); } return result; } /* Converting decimal to string SYNOPSIS my_decimal2string() return E_DEC_OK E_DEC_TRUNCATED E_DEC_OVERFLOW E_DEC_OOM */ int my_decimal2string(uint mask, const my_decimal *d, uint fixed_prec, uint fixed_dec, char filler, String *str) { int length= (fixed_prec ? (fixed_prec + 1) : my_decimal_string_length(d)); int result; if (str->alloc(length)) return check_result(mask, E_DEC_OOM); result= decimal2string((decimal_t*) d, (char*) str->ptr(), &length, (int)fixed_prec, fixed_dec, filler); str->length(length); return check_result(mask, result); } /* Convert from decimal to binary representation SYNOPSIS my_decimal2binary() mask error processing mask d number for conversion bin pointer to buffer where to write result prec overall number of decimal digits scale number of decimal digits after decimal point NOTE Before conversion we round number if it need but produce truncation error in this case RETURN E_DEC_OK E_DEC_TRUNCATED E_DEC_OVERFLOW */ int my_decimal2binary(uint mask, const my_decimal *d, char *bin, int prec, int scale) { int err1= E_DEC_OK, err2; my_decimal rounded; my_decimal2decimal(d, &rounded); rounded.frac= decimal_actual_fraction(&rounded); if (scale < rounded.frac) { err1= E_DEC_TRUNCATED; /* decimal_round can return only E_DEC_TRUNCATED */ decimal_round(&rounded, &rounded, scale, HALF_UP); } err2= decimal2bin(&rounded, bin, prec, scale); if (!err2) err2= err1; return check_result(mask, err2); } /* Convert string for decimal when string can be in some multibyte charset SYNOPSIS str2my_decimal() mask error processing mask from string to process length length of given string charset charset of given string decimal_value buffer for result storing RESULT E_DEC_OK E_DEC_TRUNCATED E_DEC_OVERFLOW E_DEC_BAD_NUM E_DEC_OOM */ int str2my_decimal(uint mask, const char *from, uint length, CHARSET_INFO *charset, my_decimal *decimal_value) { char *end, *from_end; int err; char buff[STRING_BUFFER_USUAL_SIZE]; String tmp(buff, sizeof(buff), &my_charset_bin); if (charset->mbminlen > 1) { uint dummy_errors; tmp.copy(from, length, charset, &my_charset_latin1, &dummy_errors); from= tmp.ptr(); length= tmp.length(); charset= &my_charset_bin; } from_end= end= (char*) from+length; err= string2decimal((char *)from, (decimal_t*) decimal_value, &end); if (end != from_end && !err) { /* Give warning if there is something other than end space */ for ( ; end < from_end; end++) { if (!my_isspace(&my_charset_latin1, *end)) { err= E_DEC_TRUNCATED; break; } } } check_result_and_overflow(mask, err, decimal_value); return err; } my_decimal *date2my_decimal(MYSQL_TIME *ltime, my_decimal *dec) { longlong date; date = (ltime->year*100L + ltime->month)*100L + ltime->day; if (ltime->time_type > MYSQL_TIMESTAMP_DATE) date= ((date*100L + ltime->hour)*100L+ ltime->minute)*100L + ltime->second; if (int2my_decimal(E_DEC_FATAL_ERROR, date, FALSE, dec)) return dec; if (ltime->second_part) { dec->buf[(dec->intg-1) / 9 + 1]= ltime->second_part * 1000; dec->frac= 6; } return dec; } void my_decimal_trim(ulong *precision, uint *scale) { if (!(*precision) && !(*scale)) { *precision= 10; *scale= 0; return; } } #ifndef DBUG_OFF /* routines for debugging print */ #define DIG_PER_DEC1 9 #define ROUND_UP(X) (((X)+DIG_PER_DEC1-1)/DIG_PER_DEC1) /* print decimal */ void print_decimal(const my_decimal *dec) { int i, end; char buff[512], *pos; pos= buff; pos+= my_sprintf(buff, (buff, "Decimal: sign: %d intg: %d frac: %d { ", dec->sign(), dec->intg, dec->frac)); end= ROUND_UP(dec->frac)+ROUND_UP(dec->intg)-1; for (i=0; i < end; i++) pos+= my_sprintf(pos, (pos, "%09d, ", dec->buf[i])); pos+= my_sprintf(pos, (pos, "%09d }\n", dec->buf[i])); fputs(buff, DBUG_FILE); } /* print decimal with its binary representation */ void print_decimal_buff(const my_decimal *dec, const byte* ptr, int length) { print_decimal(dec); fprintf(DBUG_FILE, "Record: "); for (int i= 0; i < length; i++) { fprintf(DBUG_FILE, "%02X ", (uint)((uchar *)ptr)[i]); } fprintf(DBUG_FILE, "\n"); } const char *dbug_decimal_as_string(char *buff, const my_decimal *val) { int length= DECIMAL_MAX_STR_LENGTH; if (!val) return "NULL"; (void)decimal2string((decimal_t*) val, buff, &length, 0,0,0); return buff; } #endif /*DBUG_OFF*/ #endif /*MYSQL_CLIENT*/