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convert.c
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/*-------
* Module: convert.c
*
* Description: This module contains routines related to
* converting parameters and columns into requested data types.
* Parameters are converted from their SQL_C data types into
* the appropriate postgres type. Columns are converted from
* their postgres type (SQL type) into the appropriate SQL_C
* data type.
*
* Classes: n/a
*
* API functions: none
*
* Comments: See "readme.txt" for copyright and license information.
*-------
*/
/* Multibyte support Eiji Tokuya 2001-03-15 */
#include "convert.h"
#include "misc.h"
#ifdef WIN32
#include <float.h>
#define HAVE_LOCALE_H
#endif /* WIN32 */
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include "multibyte.h"
#include <time.h>
#ifdef HAVE_LOCALE_H
#include <locale.h>
#endif
#include <math.h>
#include <stdlib.h>
#include "statement.h"
#include "qresult.h"
#include "bind.h"
#include "pgtypes.h"
#include "lobj.h"
#include "connection.h"
#include "catfunc.h"
#include "pgapifunc.h"
#if defined(UNICODE_SUPPORT) && defined(WIN32)
#define WIN_UNICODE_SUPPORT
#endif
CSTR NAN_STRING = "NaN";
CSTR INFINITY_STRING = "Infinity";
CSTR MINFINITY_STRING = "-Infinity";
#ifdef __CYGWIN__
#define TIMEZONE_GLOBAL _timezone
#elif defined(WIN32) || defined(HAVE_INT_TIMEZONE)
#define TIMEZONE_GLOBAL timezone
#endif
/*
* How to map ODBC scalar functions {fn func(args)} to Postgres.
* This is just a simple substitution. List augmented from:
* http://www.merant.com/datadirect/download/docs/odbc16/Odbcref/rappc.htm
* - thomas 2000-04-03
*/
char *mapFuncs[][2] = {
/* { "ASCII", "ascii" }, built_in */
{"CHAR", "chr($*)" },
{"CONCAT", "textcat($*)" },
/* { "DIFFERENCE", "difference" }, how to ? */
{"INSERT", "substring($1 from 1 for $2 - 1) || $4 || substring($1 from $2 + $3)" },
{"LCASE", "lower($*)" },
{"LEFT", "ltrunc($*)" },
{"%2LOCATE", "strpos($2, $1)" }, /* 2 parameters */
{"%3LOCATE", "strpos(substring($2 from $3), $1) + $3 - 1" }, /* 3 parameters */
{"LENGTH", "char_length($*)"},
/* { "LTRIM", "ltrim" }, built_in */
{"RIGHT", "rtrunc($*)" },
{"SPACE", "repeat(' ', $1)" },
/* { "REPEAT", "repeat" }, built_in */
/* { "REPLACE", "replace" }, ??? */
/* { "RTRIM", "rtrim" }, built_in */
/* { "SOUNDEX", "soundex" }, how to ? */
{"SUBSTRING", "substr($*)" },
{"UCASE", "upper($*)" },
/* { "ABS", "abs" }, built_in */
/* { "ACOS", "acos" }, built_in */
/* { "ASIN", "asin" }, built_in */
/* { "ATAN", "atan" }, built_in */
/* { "ATAN2", "atan2" }, built_in */
{"CEILING", "ceil($*)" },
/* { "COS", "cos" }, built_in */
/* { "COT", "cot" }, built_in */
/* { "DEGREES", "degrees" }, built_in */
/* { "EXP", "exp" }, built_in */
/* { "FLOOR", "floor" }, built_in */
{"LOG", "ln($*)" },
{"LOG10", "log($*)" },
/* { "MOD", "mod" }, built_in */
/* { "PI", "pi" }, built_in */
{"POWER", "pow($*)" },
/* { "RADIANS", "radians" }, built_in */
{"%0RAND", "random()" }, /* 0 parameters */
{"%1RAND", "(setseed($1) * .0 + random())" }, /* 1 parameters */
/* { "ROUND", "round" }, built_in */
/* { "SIGN", "sign" }, built_in */
/* { "SIN", "sin" }, built_in */
/* { "SQRT", "sqrt" }, built_in */
/* { "TAN", "tan" }, built_in */
{"TRUNCATE", "trunc($*)" },
{"CURRENT_DATE", "current_date" },
{"CURRENT_TIME", "current_time" },
{"CURRENT_TIMESTAMP", "current_timestamp" },
{"LOCALTIME", "localtime" },
{"LOCALTIMESTAMP", "localtimestamp" },
{"CURRENT_USER", "cast(current_user as text)" },
{"SESSION_USER", "cast(session_user as text)" },
{"CURDATE", "current_date" },
{"CURTIME", "current_time" },
{"DAYNAME", "to_char($1, 'Day')" },
{"DAYOFMONTH", "cast(extract(day from $1) as integer)" },
{"DAYOFWEEK", "(cast(extract(dow from $1) as integer) + 1)" },
{"DAYOFYEAR", "cast(extract(doy from $1) as integer)" },
{"HOUR", "cast(extract(hour from $1) as integer)" },
{"MINUTE", "cast(extract(minute from $1) as integer)" },
{"MONTH", "cast(extract(month from $1) as integer)" },
{"MONTHNAME", " to_char($1, 'Month')" },
/* { "NOW", "now" }, built_in */
{"QUARTER", "cast(extract(quarter from $1) as integer)" },
{"SECOND", "cast(extract(second from $1) as integer)" },
{"WEEK", "cast(extract(week from $1) as integer)" },
{"YEAR", "cast(extract(year from $1) as integer)" },
/* { "DATABASE", "database" }, */
{"IFNULL", "coalesce($*)" },
{"USER", "cast(current_user as text)" },
{0, 0}
};
static const char *mapFunction(const char *func, int param_count);
static int conv_from_octal(const char *s);
static SQLLEN pg_bin2hex(const char *src, char *dst, SQLLEN length);
#ifdef UNICODE_SUPPORT
static SQLLEN pg_bin2whex(const char *src, SQLWCHAR *dst, SQLLEN length);
#endif /* UNICODE_SUPPORT */
/*---------
* A Guide for date/time/timestamp conversions
*
* field_type fCType Output
* ---------- ------ ----------
* PG_TYPE_DATE SQL_C_DEFAULT SQL_C_DATE
* PG_TYPE_DATE SQL_C_DATE SQL_C_DATE
* PG_TYPE_DATE SQL_C_TIMESTAMP SQL_C_TIMESTAMP (time = 0 (midnight))
* PG_TYPE_TIME SQL_C_DEFAULT SQL_C_TIME
* PG_TYPE_TIME SQL_C_TIME SQL_C_TIME
* PG_TYPE_TIME SQL_C_TIMESTAMP SQL_C_TIMESTAMP (date = current date)
* PG_TYPE_ABSTIME SQL_C_DEFAULT SQL_C_TIMESTAMP
* PG_TYPE_ABSTIME SQL_C_DATE SQL_C_DATE (time is truncated)
* PG_TYPE_ABSTIME SQL_C_TIME SQL_C_TIME (date is truncated)
* PG_TYPE_ABSTIME SQL_C_TIMESTAMP SQL_C_TIMESTAMP
*---------
*/
/*
* Macros for unsigned long handling.
*/
#ifdef WIN32
#define ATOI32U(val) strtoul(val, NULL, 10)
#elif defined(HAVE_STRTOUL)
#define ATOI32U(val) strtoul(val, NULL, 10)
#else /* HAVE_STRTOUL */
#define ATOI32U atol
#endif /* WIN32 */
/*
* Macros for BIGINT handling.
*/
#ifdef ODBCINT64
#ifdef WIN32
#define ATOI64(val) _strtoi64(val, NULL, 10)
#define ATOI64U(val) _strtoui64(val, NULL, 10)
#define FORMATI64 "%I64d"
#define FORMATI64U "%I64u"
#elif (SIZEOF_LONG == 8)
#define ATOI64(val) strtol(val, NULL, 10)
#define ATOI64U(val) strtoul(val, NULL, 10)
#define FORMATI64 "%ld"
#define FORMATI64U "%lu"
#else
#define FORMATI64 "%lld"
#define FORMATI64U "%llu"
#if defined(HAVE_STRTOLL)
#define ATOI64(val) strtoll(val, NULL, 10)
#define ATOI64U(val) strtoull(val, NULL, 10)
#else
static ODBCINT64 ATOI64(const char *val)
{
ODBCINT64 ll;
sscanf(val, "%lld", &ll);
return ll;
}
static unsigned ODBCINT64 ATOI64U(const char *val)
{
unsigned ODBCINT64 ll;
sscanf(val, "%llu", &ll);
return ll;
}
#endif /* HAVE_STRTOLL */
#endif /* WIN32 */
#endif /* ODBCINT64 */
static void ResolveNumericParam(const SQL_NUMERIC_STRUCT *ns, char *chrform);
static void parse_to_numeric_struct(const char *wv, SQL_NUMERIC_STRUCT *ns, BOOL *overflow);
/*
* TIMESTAMP <-----> SIMPLE_TIME
* precision support since 7.2.
* time zone support is unavailable(the stuff is unreliable)
*/
static BOOL
timestamp2stime(const char *str, SIMPLE_TIME *st, BOOL *bZone, int *zone)
{
char rest[64], bc[16],
*ptr;
int scnt,
i;
#ifdef TIMEZONE_GLOBAL
long timediff;
#endif
BOOL withZone = *bZone;
*bZone = FALSE;
*zone = 0;
st->fr = 0;
st->infinity = 0;
rest[0] = '\0';
bc[0] = '\0';
if ((scnt = sscanf(str, "%4d-%2d-%2d %2d:%2d:%2d%31s %15s", &st->y, &st->m, &st->d, &st->hh, &st->mm, &st->ss, rest, bc)) < 6)
return FALSE;
else if (scnt == 6)
return TRUE;
switch (rest[0])
{
case '+':
*bZone = TRUE;
*zone = atoi(&rest[1]);
break;
case '-':
*bZone = TRUE;
*zone = -atoi(&rest[1]);
break;
case '.':
if ((ptr = strchr(rest, '+')) != NULL)
{
*bZone = TRUE;
*zone = atoi(&ptr[1]);
*ptr = '\0';
}
else if ((ptr = strchr(rest, '-')) != NULL)
{
*bZone = TRUE;
*zone = -atoi(&ptr[1]);
*ptr = '\0';
}
for (i = 1; i < 10; i++)
{
if (!isdigit((UCHAR) rest[i]))
break;
}
for (; i < 10; i++)
rest[i] = '0';
rest[i] = '\0';
st->fr = atoi(&rest[1]);
break;
case 'B':
if (stricmp(rest, "BC") == 0)
st->y *= -1;
return TRUE;
default:
return TRUE;
}
if (stricmp(bc, "BC") == 0)
{
st->y *= -1;
}
if (!withZone || !*bZone || st->y < 1970)
return TRUE;
#ifdef TIMEZONE_GLOBAL
if (!tzname[0] || !tzname[0][0])
{
*bZone = FALSE;
return TRUE;
}
timediff = TIMEZONE_GLOBAL + (*zone) * 3600;
if (!daylight && timediff == 0) /* the same timezone */
return TRUE;
else
{
struct tm tm,
*tm2;
time_t time0;
*bZone = FALSE;
tm.tm_year = st->y - 1900;
tm.tm_mon = st->m - 1;
tm.tm_mday = st->d;
tm.tm_hour = st->hh;
tm.tm_min = st->mm;
tm.tm_sec = st->ss;
tm.tm_isdst = -1;
time0 = mktime(&tm);
if (time0 < 0)
return TRUE;
if (tm.tm_isdst > 0)
timediff -= 3600;
if (timediff == 0) /* the same time zone */
return TRUE;
time0 -= timediff;
#ifdef HAVE_LOCALTIME_R
if (time0 >= 0 && (tm2 = localtime_r(&time0, &tm)) != NULL)
#else
if (time0 >= 0 && (tm2 = localtime(&time0)) != NULL)
#endif /* HAVE_LOCALTIME_R */
{
st->y = tm2->tm_year + 1900;
st->m = tm2->tm_mon + 1;
st->d = tm2->tm_mday;
st->hh = tm2->tm_hour;
st->mm = tm2->tm_min;
st->ss = tm2->tm_sec;
*bZone = TRUE;
}
}
#endif /* TIMEZONE_GLOBAL */
return TRUE;
}
static int
stime2timestamp(const SIMPLE_TIME *st, char *str, size_t bufsize, BOOL bZone,
int precision)
{
char precstr[16],
zonestr[16];
int i;
precstr[0] = '\0';
if (st->infinity > 0)
{
return snprintf(str, bufsize, "%s", INFINITY_STRING);
}
else if (st->infinity < 0)
{
return snprintf(str, bufsize, "%s", MINFINITY_STRING);
}
if (precision > 0 && st->fr)
{
snprintf(precstr, sizeof(precstr), ".%09d", st->fr);
if (precision < 9)
precstr[precision + 1] = '\0';
for (i = precision; i > 0; i--)
{
if (precstr[i] != '0')
break;
precstr[i] = '\0';
}
if (i == 0)
precstr[i] = '\0';
}
zonestr[0] = '\0';
#ifdef TIMEZONE_GLOBAL
if (bZone && tzname[0] && tzname[0][0] && st->y >= 1970)
{
long zoneint;
struct tm tm;
time_t time0;
zoneint = TIMEZONE_GLOBAL;
if (daylight && st->y >= 1900)
{
tm.tm_year = st->y - 1900;
tm.tm_mon = st->m - 1;
tm.tm_mday = st->d;
tm.tm_hour = st->hh;
tm.tm_min = st->mm;
tm.tm_sec = st->ss;
tm.tm_isdst = -1;
time0 = mktime(&tm);
if (time0 >= 0 && tm.tm_isdst > 0)
zoneint -= 3600;
}
if (zoneint > 0)
snprintf(zonestr, sizeof(zonestr), "-%02d", (int) zoneint / 3600);
else
snprintf(zonestr, sizeof(zonestr), "+%02d", -(int) zoneint / 3600);
}
#endif /* TIMEZONE_GLOBAL */
if (st->y < 0)
return snprintf(str, bufsize, "%.4d-%.2d-%.2d %.2d:%.2d:%.2d%s%s BC", -st->y, st->m, st->d, st->hh, st->mm, st->ss, precstr, zonestr);
else
return snprintf(str, bufsize, "%.4d-%.2d-%.2d %.2d:%.2d:%.2d%s%s", st->y, st->m, st->d, st->hh, st->mm, st->ss, precstr, zonestr);
}
static
SQLINTERVAL interval2itype(SQLSMALLINT ctype)
{
SQLINTERVAL sqlitv = 0;
switch (ctype)
{
case SQL_C_INTERVAL_YEAR:
sqlitv = SQL_IS_YEAR;
break;
case SQL_C_INTERVAL_MONTH:
sqlitv = SQL_IS_MONTH;
break;
case SQL_C_INTERVAL_YEAR_TO_MONTH:
sqlitv = SQL_IS_YEAR_TO_MONTH;
break;
case SQL_C_INTERVAL_DAY:
sqlitv = SQL_IS_DAY;
break;
case SQL_C_INTERVAL_HOUR:
sqlitv = SQL_IS_HOUR;
break;
case SQL_C_INTERVAL_DAY_TO_HOUR:
sqlitv = SQL_IS_DAY_TO_HOUR;
break;
case SQL_C_INTERVAL_MINUTE:
sqlitv = SQL_IS_MINUTE;
break;
case SQL_C_INTERVAL_DAY_TO_MINUTE:
sqlitv = SQL_IS_DAY_TO_MINUTE;
break;
case SQL_C_INTERVAL_HOUR_TO_MINUTE:
sqlitv = SQL_IS_HOUR_TO_MINUTE;
break;
case SQL_C_INTERVAL_SECOND:
sqlitv = SQL_IS_SECOND;
break;
case SQL_C_INTERVAL_DAY_TO_SECOND:
sqlitv = SQL_IS_DAY_TO_SECOND;
break;
case SQL_C_INTERVAL_HOUR_TO_SECOND:
sqlitv = SQL_IS_HOUR_TO_SECOND;
break;
case SQL_C_INTERVAL_MINUTE_TO_SECOND:
sqlitv = SQL_IS_MINUTE_TO_SECOND;
break;
}
return sqlitv;
}
/*
* Interval data <-----> SQL_INTERVAL_STRUCT
*/
static int getPrecisionPart(int precision, const char * precPart)
{
char fraction[] = "000000000";
int fracs = sizeof(fraction) - 1;
size_t cpys;
if (precision < 0)
precision = 6; /* default */
if (precision == 0)
return 0;
cpys = strlen(precPart);
if (cpys > fracs)
cpys = fracs;
memcpy(fraction, precPart, cpys);
fraction[precision] = '\0';
return atoi(fraction);
}
static BOOL
interval2istruct(SQLSMALLINT ctype, int precision, const char *str, SQL_INTERVAL_STRUCT *st)
{
char lit1[64], lit2[64];
int scnt, years, mons, days, hours, minutes, seconds;
BOOL sign;
SQLINTERVAL itype = interval2itype(ctype);
memset(st, 0, sizeof(SQL_INTERVAL_STRUCT));
if ((scnt = sscanf(str, "%d-%d", &years, &mons)) >=2)
{
if (SQL_IS_YEAR_TO_MONTH == itype)
{
sign = years < 0 ? SQL_TRUE : SQL_FALSE;
st->interval_type = itype;
st->interval_sign = sign;
st->intval.year_month.year = sign ? (-years) : years;
st->intval.year_month.month = mons;
return TRUE;
}
return FALSE;
}
else if (scnt = sscanf(str, "%d %02d:%02d:%02d.%09s", &days, &hours, &minutes, &seconds, lit2), 5 == scnt || 4 == scnt)
{
sign = days < 0 ? SQL_TRUE : SQL_FALSE;
st->interval_type = itype;
st->interval_sign = sign;
st->intval.day_second.day = sign ? (-days) : days;
st->intval.day_second.hour = hours;
st->intval.day_second.minute = minutes;
st->intval.day_second.second = seconds;
if (scnt > 4)
st->intval.day_second.fraction = getPrecisionPart(precision, lit2);
return TRUE;
}
else if ((scnt = sscanf(str, "%d %10s %d %10s", &years, lit1, &mons, lit2)) >=4)
{
if (strnicmp(lit1, "year", 4) == 0 &&
strnicmp(lit2, "mon", 2) == 0 &&
(SQL_IS_MONTH == itype ||
SQL_IS_YEAR_TO_MONTH == itype))
{
sign = years < 0 ? SQL_TRUE : SQL_FALSE;
st->interval_type = itype;
st->interval_sign = sign;
st->intval.year_month.year = sign ? (-years) : years;
st->intval.year_month.month = sign ? (-mons) : mons;
return TRUE;
}
return FALSE;
}
if ((scnt = sscanf(str, "%d %10s %d", &years, lit1, &days)) == 2)
{
sign = years < 0 ? SQL_TRUE : SQL_FALSE;
if (SQL_IS_YEAR == itype &&
(stricmp(lit1, "year") == 0 ||
stricmp(lit1, "years") == 0))
{
st->interval_type = itype;
st->interval_sign = sign;
st->intval.year_month.year = sign ? (-years) : years;
return TRUE;
}
if (SQL_IS_MONTH == itype &&
(stricmp(lit1, "mon") == 0 ||
stricmp(lit1, "mons") == 0))
{
st->interval_type = itype;
st->interval_sign = sign;
st->intval.year_month.month = sign ? (-years) : years;
return TRUE;
}
if (SQL_IS_DAY == itype &&
(stricmp(lit1, "day") == 0 ||
stricmp(lit1, "days") == 0))
{
st->interval_type = itype;
st->interval_sign = sign;
st->intval.day_second.day = sign ? (-years) : years;
return TRUE;
}
return FALSE;
}
if (itype == SQL_IS_YEAR || itype == SQL_IS_MONTH || itype == SQL_IS_YEAR_TO_MONTH)
{
/* these formats should've been handled above already */
return FALSE;
}
scnt = sscanf(str, "%d %10s %02d:%02d:%02d.%09s", &days, lit1, &hours, &minutes, &seconds, lit2);
if (strnicmp(lit1, "day", 3) != 0)
return FALSE;
sign = days < 0 ? SQL_TRUE : SQL_FALSE;
switch (scnt)
{
case 5:
case 6:
st->interval_type = itype;
st->interval_sign = sign;
st->intval.day_second.day = sign ? (-days) : days;
st->intval.day_second.hour = sign ? (-hours) : hours;
st->intval.day_second.minute = minutes;
st->intval.day_second.second = seconds;
if (scnt > 5)
st->intval.day_second.fraction = getPrecisionPart(precision, lit2);
return TRUE;
}
scnt = sscanf(str, "%02d:%02d:%02d.%09s", &hours, &minutes, &seconds, lit2);
sign = hours < 0 ? SQL_TRUE : SQL_FALSE;
switch (scnt)
{
case 3:
case 4:
st->interval_type = itype;
st->interval_sign = sign;
st->intval.day_second.hour = sign ? (-hours) : hours;
st->intval.day_second.minute = minutes;
st->intval.day_second.second = seconds;
if (scnt > 3)
st->intval.day_second.fraction = getPrecisionPart(precision, lit2);
return TRUE;
}
return FALSE;
}
#ifdef HAVE_LOCALE_H
/*
* Get the decimal point of the current locale.
*
* XXX: This isn't thread-safe, if another thread changes the locale with
* setlocale() concurrently. There are two problems with that:
*
* 1. The pointer returned by localeconv(), or the lc->decimal_point string,
* might be invalidated by calls in other threads. Until someone comes up
* with a thread-safe version of localeconv(), there isn't much we can do
* about that. (libc implementations that return a static buffer (like glibc)
* happen to be safe from the lconv struct being invalidated, but the
* decimal_point string might still not point to a static buffer).
*
* 2. The between the call to sprintf() and get_current_decimal_point(), the
* decimal point might change. That would cause set_server_decimal_point()
* to fail to recognize a decimal separator, and we might send a numeric
* string to the server that the server won't recognize. This would cause
* the query to fail in the server.
*
* XXX: we only take into account the first byte of the decimal separator.
*/
static char get_current_decimal_point(void)
{
struct lconv *lc = localeconv();
return lc->decimal_point[0];
}
/*
* Modify the string representation of a numeric/float value, converting the
* decimal point from '.' to the correct decimal separator of the current
* locale.
*/
static void set_server_decimal_point(char *num)
{
char current_decimal_point = get_current_decimal_point();
char *str;
if ('.' == current_decimal_point)
return;
for (str = num; '\0' != *str; str++)
{
if (*str == current_decimal_point)
{
*str = '.';
break;
}
}
}
/*
* Inverse of set_server_decimal_point.
*/
static void set_client_decimal_point(char *num)
{
char current_decimal_point = get_current_decimal_point();
char *str;
if ('.' == current_decimal_point)
return;
for (str = num; '\0' != *str; str++)
{
if (*str == '.')
{
*str = current_decimal_point;
break;
}
}
}
#else
static void set_server_decimal_point(char *num) {}
static void set_client_decimal_point(char *num, BOOL) {}
#endif /* HAVE_LOCALE_H */
/* This is called by SQLFetch() */
int
copy_and_convert_field_bindinfo(StatementClass *stmt, OID field_type, int atttypmod, void *value, int col)
{
ARDFields *opts = SC_get_ARDF(stmt);
BindInfoClass *bic;
SQLULEN offset = opts->row_offset_ptr ? *opts->row_offset_ptr : 0;
if (opts->allocated <= col)
extend_column_bindings(opts, col + 1);
bic = &(opts->bindings[col]);
SC_set_current_col(stmt, -1);
return copy_and_convert_field(stmt, field_type, atttypmod, value,
bic->returntype, bic->precision,
(PTR) (bic->buffer + offset), bic->buflen,
LENADDR_SHIFT(bic->used, offset), LENADDR_SHIFT(bic->indicator, offset));
}
static double get_double_value(const char *str)
{
if (stricmp(str, NAN_STRING) == 0)
#ifdef NAN
return (double) NAN;
#else
{
double a = .0;
return .0 / a;
}
#endif /* NAN */
else if (stricmp(str, INFINITY_STRING) == 0)
#ifdef INFINITY
return (double) INFINITY;
#else
return (double) (HUGE_VAL * HUGE_VAL);
#endif /* INFINITY */
else if (stricmp(str, MINFINITY_STRING) == 0)
#ifdef INFINITY
return (double) -INFINITY;
#else
return (double) -(HUGE_VAL * HUGE_VAL);
#endif /* INFINITY */
return atof(str);
}
static int char2guid(const char *str, SQLGUID *g)
{
/*
* SQLGUID.Data1 is an "unsigned long" on some platforms, and
* "unsigned int" on others. For format "%08X", it should be an
* "unsigned int", so use a temporary variable for it.
*/
unsigned int Data1;
if (sscanf(str,
"%08X-%04hX-%04hX-%02hhX%02hhX-%02hhX%02hhX%02hhX%02hhX%02hhX%02hhX",
&Data1,
&g->Data2, &g->Data3,
&g->Data4[0], &g->Data4[1], &g->Data4[2], &g->Data4[3],
&g->Data4[4], &g->Data4[5], &g->Data4[6], &g->Data4[7]) < 11)
return COPY_GENERAL_ERROR;
g->Data1 = Data1;
return COPY_OK;
}
/* This is called by SQLGetData() */
int
copy_and_convert_field(StatementClass *stmt,
OID field_type, int atttypmod,
void *valuei,
SQLSMALLINT fCType, int precision,
PTR rgbValue, SQLLEN cbValueMax,
SQLLEN *pcbValue, SQLLEN *pIndicator)
{
CSTR func = "copy_and_convert_field";
const char *value = valuei;
ARDFields *opts = SC_get_ARDF(stmt);
GetDataInfo *gdata = SC_get_GDTI(stmt);
SQLLEN len = 0,
copy_len = 0, needbuflen = 0;
SIMPLE_TIME std_time;
time_t stmt_t = SC_get_time(stmt);
struct tm *tim;
#ifdef HAVE_LOCALTIME_R
struct tm tm;
#endif /* HAVE_LOCALTIME_R */
SQLLEN pcbValueOffset,
rgbValueOffset;
char *rgbValueBindRow = NULL;
SQLLEN *pcbValueBindRow = NULL, *pIndicatorBindRow = NULL;
const char *ptr;
SQLSETPOSIROW bind_row = stmt->bind_row;
int bind_size = opts->bind_size;
int result = COPY_OK;
const ConnectionClass *conn = SC_get_conn(stmt);
BOOL changed;
BOOL text_handling, localize_needed;
const char *neut_str = value;
char booltemp[3];
char moneytemp[32];
GetDataClass *pgdc;
#ifdef UNICODE_SUPPORT
BOOL wconverted = FALSE;
#endif /* UNICODE_SUPPORT */
#ifdef WIN_UNICODE_SUPPORT
SQLWCHAR *allocbuf = NULL;
ssize_t wstrlen;
#endif /* WIN_UNICODE_SUPPORT */
SQLGUID g;
int i;
if (stmt->current_col >= 0)
{
if (stmt->current_col >= opts->allocated)
{
return SQL_ERROR;
}
if (gdata->allocated != opts->allocated)
extend_getdata_info(gdata, opts->allocated, TRUE);
pgdc = &gdata->gdata[stmt->current_col];
if (pgdc->data_left == -2)
pgdc->data_left = (cbValueMax > 0) ? 0 : -1; /* This seems to be *
* needed by ADO ? */
if (pgdc->data_left == 0)
{
if (pgdc->ttlbuf != NULL)
{
free(pgdc->ttlbuf);
pgdc->ttlbuf = NULL;
pgdc->ttlbuflen = 0;
}
pgdc->data_left = -2; /* needed by ADO ? */
return COPY_NO_DATA_FOUND;
}
}
/*---------
* rgbValueOffset is *ONLY* for character and binary data.
* pcbValueOffset is for computing any pcbValue location
*---------
*/
if (bind_size > 0)
pcbValueOffset = rgbValueOffset = (bind_size * bind_row);
else
{
pcbValueOffset = bind_row * sizeof(SQLLEN);
rgbValueOffset = bind_row * cbValueMax;
}
/*
* The following is applicable in case bind_size > 0
* or the fCType is of variable length.
*/
if (rgbValue)
rgbValueBindRow = (char *) rgbValue + rgbValueOffset;
if (pcbValue)
pcbValueBindRow = LENADDR_SHIFT(pcbValue, pcbValueOffset);
if (pIndicator)
{
pIndicatorBindRow = LENADDR_SHIFT(pIndicator, pcbValueOffset);
*pIndicatorBindRow = 0;
}
memset(&std_time, 0, sizeof(SIMPLE_TIME));
/* Initialize current date */
#ifdef HAVE_LOCALTIME_R
tim = localtime_r(&stmt_t, &tm);
#else
tim = localtime(&stmt_t);
#endif /* HAVE_LOCALTIME_R */
std_time.m = tim->tm_mon + 1;
std_time.d = tim->tm_mday;
std_time.y = tim->tm_year + 1900;
mylog("copy_and_convert: field_type = %d, fctype = %d, value = '%s', cbValueMax=%d\n", field_type, fCType, (value == NULL) ? "<NULL>" : value, cbValueMax);
if (!value)
{
mylog("null_cvt_date_string=%d\n", conn->connInfo.cvt_null_date_string);
/* a speicial handling for FOXPRO NULL -> NULL_STRING */
if (conn->connInfo.cvt_null_date_string > 0 &&
(PG_TYPE_DATE == field_type ||
PG_TYPE_DATETIME == field_type ||
PG_TYPE_TIMESTAMP_NO_TMZONE == field_type) &&
(SQL_C_CHAR == fCType ||
#ifdef UNICODE_SUPPORT
SQL_C_WCHAR == fCType ||
#endif /* UNICODE_SUPPORT */
SQL_C_DATE == fCType ||
SQL_C_TYPE_DATE == fCType ||
SQL_C_DEFAULT == fCType))
{
if (pcbValueBindRow)
*pcbValueBindRow = 0;
switch (fCType)
{
case SQL_C_CHAR:
if (rgbValueBindRow && cbValueMax > 0)
rgbValueBindRow = '\0';
else
result = COPY_RESULT_TRUNCATED;
break;
case SQL_C_DATE:
case SQL_C_TYPE_DATE:
case SQL_C_DEFAULT:
if (rgbValueBindRow && cbValueMax >= sizeof(DATE_STRUCT))
{
memset(rgbValueBindRow, 0, cbValueMax);
if (pcbValueBindRow)
*pcbValueBindRow = sizeof(DATE_STRUCT);
}
else
result = COPY_RESULT_TRUNCATED;
break;
#ifdef UNICODE_SUPPORT
case SQL_C_WCHAR:
if (rgbValueBindRow && cbValueMax >= WCLEN)
memset(rgbValueBindRow, 0, WCLEN);
else
result = COPY_RESULT_TRUNCATED;
break;
#endif /* UNICODE_SUPPORT */
}
return result;
}
/*
* handle a null just by returning SQL_NULL_DATA in pcbValue, and
* doing nothing to the buffer.
*/
else if (pIndicator)
{
*pIndicatorBindRow = SQL_NULL_DATA;
return COPY_OK;
}
else
{
SC_set_error(stmt, STMT_RETURN_NULL_WITHOUT_INDICATOR, "StrLen_or_IndPtr was a null pointer and NULL data was retrieved", func);
return SQL_ERROR;
}
}
if (stmt->hdbc->DataSourceToDriver != NULL)
{
size_t length = strlen(value);
stmt->hdbc->DataSourceToDriver(stmt->hdbc->translation_option,
SQL_CHAR, valuei, (SDWORD) length,
valuei, (SDWORD) length, NULL,
NULL, 0, NULL);
}
/*
* First convert any specific postgres types into more useable data.
*
* NOTE: Conversions from PG char/varchar of a date/time/timestamp value
* to SQL_C_DATE,SQL_C_TIME, SQL_C_TIMESTAMP not supported
*/
switch (field_type)
{
/*
* $$$ need to add parsing for date/time/timestamp strings in
* PG_TYPE_CHAR,VARCHAR $$$
*/
case PG_TYPE_DATE:
sscanf(value, "%4d-%2d-%2d", &std_time.y, &std_time.m, &std_time.d);
break;
case PG_TYPE_TIME:
sscanf(value, "%2d:%2d:%2d", &std_time.hh, &std_time.mm, &std_time.ss);
break;
case PG_TYPE_ABSTIME:
case PG_TYPE_DATETIME:
case PG_TYPE_TIMESTAMP_NO_TMZONE:
case PG_TYPE_TIMESTAMP:
std_time.fr = 0;
std_time.infinity = 0;
if (strnicmp(value, INFINITY_STRING, 8) == 0)
{
std_time.infinity = 1;
std_time.m = 12;
std_time.d = 31;
std_time.y = 9999;
std_time.hh = 23;
std_time.mm = 59;
std_time.ss = 59;
}
if (strnicmp(value, MINFINITY_STRING, 9) == 0)
{
std_time.infinity = -1;
std_time.m = 1;
std_time.d = 1;
// std_time.y = -4713;
std_time.y = -9999;
std_time.hh = 0;
std_time.mm = 0;
std_time.ss = 0;
}
if (strnicmp(value, "invalid", 7) != 0)
{
BOOL bZone = field_type != PG_TYPE_TIMESTAMP_NO_TMZONE;
int zone;
/*
* sscanf(value, "%4d-%2d-%2d %2d:%2d:%2d", &std_time.y, &std_time.m,
* &std_time.d, &std_time.hh, &std_time.mm, &std_time.ss);
*/
bZone = FALSE; /* time zone stuff is unreliable */
timestamp2stime(value, &std_time, &bZone, &zone);
inolog("2stime fr=%d\n", std_time.fr);
}
else
{
/*
* The timestamp is invalid so set something conspicuous,
* like the epoch
*/
time_t t = 0;
#ifdef HAVE_LOCALTIME_R
tim = localtime_r(&t, &tm);