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Make to_char()'s localized month/day names depend on LC_TIME, not LC_MESSAGES. 

Euler Taveira de Oliveira
This commit is contained in:
Tom Lane 2008-05-19 18:08:16 +00:00
parent 63e98b55f0
commit 07a5606735
6 changed files with 251 additions and 274 deletions
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8
doc/src/sgml/config.sgml
View File

@ -1,4 +1,4 @@
<!-- $PostgreSQL: pgsql/doc/src/sgml/config.sgml,v 1.178 2008/05/15 00:17:39 tgl Exp $ -->
<!-- $PostgreSQL: pgsql/doc/src/sgml/config.sgml,v 1.179 2008/05/19 18:08:15 tgl Exp $ -->
<chapter Id="runtime-config">
<title>Server Configuration</title>
@ -4184,9 +4184,9 @@ SET XML OPTION { DOCUMENT | CONTENT };
</indexterm>
<listitem>
<para>
Sets the locale to use for formatting date and time values.
(Currently, this setting does nothing, but it might in the
future.) Acceptable values are system-dependent; see <xref
Sets the locale to use for formatting dates and times, for example
with the <function>to_char</function> family of
functions. Acceptable values are system-dependent; see <xref
linkend="locale"> for more information. If this variable is
set to the empty string (which is the default) then the value
is inherited from the execution environment of the server in a

5
doc/src/sgml/func.sgml
View File

@ -1,4 +1,4 @@
<!-- $PostgreSQL: pgsql/doc/src/sgml/func.sgml,v 1.436 2008/05/04 23:19:23 tgl Exp $ -->
<!-- $PostgreSQL: pgsql/doc/src/sgml/func.sgml,v 1.437 2008/05/19 18:08:15 tgl Exp $ -->
<chapter id="functions">
<title>Functions and Operators</title>
@ -5079,7 +5079,8 @@ SELECT SUBSTRING('XY1234Z', 'Y*?([0-9]{1,3})');
</row>
<row>
<entry><literal>TM</literal> prefix</entry>
<entry>translation mode (print localized day and month names based on <varname>lc_messages</>)</entry>
<entry>translation mode (print localized day and month names based on
<xref linkend="guc-lc-time">)</entry>
<entry><literal>TMMonth</literal></entry>
</row>
<row>

399
src/backend/utils/adt/formatting.c
View File

@ -1,7 +1,7 @@
/* -----------------------------------------------------------------------
* formatting.c
*
* $PostgreSQL: pgsql/src/backend/utils/adt/formatting.c,v 1.139 2008/03/25 22:42:44 tgl Exp $
* $PostgreSQL: pgsql/src/backend/utils/adt/formatting.c,v 1.140 2008/05/19 18:08:15 tgl Exp $
*
*
* Portions Copyright (c) 1999-2008, PostgreSQL Global Development Group
@ -75,7 +75,17 @@
#include <math.h>
#include <float.h>
#include <limits.h>
#include <locale.h>
/*
* towlower() and friends should be in <wctype.h>, but some pre-C99 systems
* declare them in <wchar.h>.
*/
#ifdef HAVE_WCHAR_H
#include <wchar.h>
#endif
#ifdef HAVE_WCTYPE_H
#include <wctype.h>
#endif
#include "utils/builtins.h"
#include "utils/date.h"
@ -86,8 +96,6 @@
#include "utils/pg_locale.h"
#include "mb/pg_wchar.h"
#define _(x) gettext((x))
/* ----------
* Routines type
* ----------
@ -919,6 +927,7 @@ static int strspace_len(char *str);
static int strdigits_len(char *str);
static char *str_toupper(char *buff);
static char *str_tolower(char *buff);
static char *str_initcap(char *buff);
static int seq_search(char *name, char **array, int type, int max, int *len);
static void do_to_timestamp(text *date_txt, text *fmt,
@ -939,22 +948,13 @@ static NUMCacheEntry *NUM_cache_search(char *str);
static NUMCacheEntry *NUM_cache_getnew(char *str);
static void NUM_cache_remove(NUMCacheEntry *ent);
static char *localize_month_full(int index);
static char *localize_month(int index);
static char *localize_day_full(int index);
static char *localize_day(int index);
#if defined(HAVE_WCSTOMBS) && defined(HAVE_TOWLOWER)
#define USE_WIDE_UPPER_LOWER
/* externs are in oracle_compat.c */
extern char *wstring_upper(char *str);
extern char *wstring_lower(char *str);
static char *localized_str_toupper(char *buff);
static char *localized_str_tolower(char *buff);
#else
#define localized_str_toupper str_toupper
#define localized_str_tolower str_tolower
extern wchar_t *texttowcs(const text *txt);
extern text *wcstotext(const wchar_t *str, int ncodes);
#endif
/* ----------
@ -1426,103 +1426,123 @@ str_numth(char *dest, char *num, int type)
}
/* ----------
* Convert string to upper case. Input string is modified in place.
* Convert string to upper case. It is designed to be multibyte-aware.
* ----------
*/
static char *
str_toupper(char *buff)
{
char *p_buff = buff;
char *result;
if (!buff)
return NULL;
while (*p_buff)
#ifdef USE_WIDE_UPPER_LOWER
if (pg_database_encoding_max_length() > 1 && !lc_ctype_is_c())
result = wstring_upper(buff);
else
#endif /* USE_WIDE_UPPER_LOWER */
{
*p_buff = pg_toupper((unsigned char) *p_buff);
++p_buff;
char *p;
result = pstrdup(buff);
for (p = result; *p; p++)
*p = pg_toupper((unsigned char) *p);
}
return buff;
return result;
}
/* ----------
* Convert string to lower case. Input string is modified in place.
* Convert string to lower case. It is designed to be multibyte-aware.
* ----------
*/
static char *
str_tolower(char *buff)
{
char *p_buff = buff;
char *result;
if (!buff)
return NULL;
while (*p_buff)
{
*p_buff = pg_tolower((unsigned char) *p_buff);
++p_buff;
}
return buff;
}
#ifdef USE_WIDE_UPPER_LOWER
if (pg_database_encoding_max_length() > 1 && !lc_ctype_is_c())
result = wstring_lower(buff);
else
#endif /* USE_WIDE_UPPER_LOWER */
{
char *p;
result = pstrdup(buff);
for (p = result; *p; p++)
*p = pg_tolower((unsigned char) *p);
}
return result;
}
/* ----------
* Convert localized string to upper case.
* Input string may be modified in place ... or we might make a copy.
* wide-character-aware initcap function
* ----------
*/
static char *
localized_str_toupper(char *buff)
str_initcap(char *buff)
{
char *result;
bool wasalnum = false;
if (!buff)
return NULL;
#ifdef USE_WIDE_UPPER_LOWER
if (pg_database_encoding_max_length() > 1 && !lc_ctype_is_c())
return wstring_upper(buff);
else
{
char *p_buff = buff;
wchar_t *workspace;
text *in_text;
text *out_text;
int i;
while (*p_buff)
in_text = cstring_to_text(buff);
workspace = texttowcs(in_text);
for (i = 0; workspace[i] != 0; i++)
{
*p_buff = pg_toupper((unsigned char) *p_buff);
++p_buff;
if (wasalnum)
workspace[i] = towlower(workspace[i]);
else
workspace[i] = towupper(workspace[i]);
wasalnum = iswalnum(workspace[i]);
}
out_text = wcstotext(workspace, i);
result = text_to_cstring(out_text);
pfree(workspace);
pfree(in_text);
pfree(out_text);
}
else
#endif /* USE_WIDE_UPPER_LOWER */
{
char *p;
result = pstrdup(buff);
for (p = result; *p; p++)
{
if (wasalnum)
*p = pg_tolower((unsigned char) *p);
else
*p = pg_toupper((unsigned char) *p);
wasalnum = isalnum((unsigned char) *p);
}
}
return buff;
return result;
}
/* ----------
* Convert localized string to lower case.
* Input string may be modified in place ... or we might make a copy.
* ----------
*/
static char *
localized_str_tolower(char *buff)
{
if (!buff)
return NULL;
if (pg_database_encoding_max_length() > 1 && !lc_ctype_is_c())
return wstring_lower(buff);
else
{
char *p_buff = buff;
while (*p_buff)
{
*p_buff = pg_tolower((unsigned char) *p_buff);
++p_buff;
}
}
return buff;
}
#endif /* USE_WIDE_UPPER_LOWER */
/* ----------
* Sequential search with to upper/lower conversion
* ----------
@ -1730,6 +1750,9 @@ DCH_to_char(FormatNode *node, bool is_interval, TmToChar *in, char *out)
workbuff[32];
int i;
/* cache localized days and months */
cache_locale_time();
s = out;
for (n = node; n->type != NODE_TYPE_END; n++)
{
@ -1872,8 +1895,8 @@ DCH_to_char(FormatNode *node, bool is_interval, TmToChar *in, char *out)
break;
if (S_TM(n->suffix))
{
strcpy(workbuff, localize_month_full(tm->tm_mon - 1));
sprintf(s, "%*s", 0, localized_str_toupper(workbuff));
strcpy(workbuff, localized_full_months[tm->tm_mon - 1]);
sprintf(s, "%*s", 0, str_toupper(workbuff));
}
else
{
@ -1887,9 +1910,14 @@ DCH_to_char(FormatNode *node, bool is_interval, TmToChar *in, char *out)
if (!tm->tm_mon)
break;
if (S_TM(n->suffix))
sprintf(s, "%*s", 0, localize_month_full(tm->tm_mon - 1));
{
strcpy(workbuff, localized_full_months[tm->tm_mon - 1]);
sprintf(s, "%*s", 0, str_initcap(workbuff));
}
else
{
sprintf(s, "%*s", S_FM(n->suffix) ? 0 : -9, months_full[tm->tm_mon - 1]);
}
s += strlen(s);
break;
case DCH_month:
@ -1898,8 +1926,8 @@ DCH_to_char(FormatNode *node, bool is_interval, TmToChar *in, char *out)
break;
if (S_TM(n->suffix))
{
strcpy(workbuff, localize_month_full(tm->tm_mon - 1));
sprintf(s, "%*s", 0, localized_str_tolower(workbuff));
strcpy(workbuff, localized_full_months[tm->tm_mon - 1]);
sprintf(s, "%*s", 0, str_tolower(workbuff));
}
else
{
@ -1914,13 +1942,13 @@ DCH_to_char(FormatNode *node, bool is_interval, TmToChar *in, char *out)
break;
if (S_TM(n->suffix))
{
strcpy(workbuff, localize_month(tm->tm_mon - 1));
strcpy(s, localized_str_toupper(workbuff));
strcpy(workbuff, localized_abbrev_months[tm->tm_mon - 1]);
sprintf(s, "%*s", 0, str_toupper(workbuff));
}
else
{
strcpy(s, months[tm->tm_mon - 1]);
str_toupper(s);
strcpy(workbuff, months[tm->tm_mon - 1]);
sprintf(s, "%*s", 0, str_toupper(workbuff));
}
s += strlen(s);
break;
@ -1929,9 +1957,14 @@ DCH_to_char(FormatNode *node, bool is_interval, TmToChar *in, char *out)
if (!tm->tm_mon)
break;
if (S_TM(n->suffix))
strcpy(s, localize_month(tm->tm_mon - 1));
{
strcpy(workbuff, localized_abbrev_months[tm->tm_mon - 1]);
sprintf(s, "%*s", 0, str_initcap(workbuff));
}
else
{
strcpy(s, months[tm->tm_mon - 1]);
}
s += strlen(s);
break;
case DCH_mon:
@ -1940,8 +1973,8 @@ DCH_to_char(FormatNode *node, bool is_interval, TmToChar *in, char *out)
break;
if (S_TM(n->suffix))
{
strcpy(workbuff, localize_month(tm->tm_mon - 1));
strcpy(s, localized_str_tolower(workbuff));
strcpy(workbuff, localized_abbrev_months[tm->tm_mon - 1]);
sprintf(s, "%*s", 0, str_tolower(workbuff));
}
else
{
@ -1960,8 +1993,8 @@ DCH_to_char(FormatNode *node, bool is_interval, TmToChar *in, char *out)
INVALID_FOR_INTERVAL;
if (S_TM(n->suffix))
{
strcpy(workbuff, localize_day_full(tm->tm_wday));
sprintf(s, "%*s", 0, localized_str_toupper(workbuff));
strcpy(workbuff, localized_full_days[tm->tm_wday]);
sprintf(s, "%*s", 0, str_toupper(workbuff));
}
else
{
@ -1973,17 +2006,22 @@ DCH_to_char(FormatNode *node, bool is_interval, TmToChar *in, char *out)
case DCH_Day:
INVALID_FOR_INTERVAL;
if (S_TM(n->suffix))
sprintf(s, "%*s", 0, localize_day_full(tm->tm_wday));
{
strcpy(workbuff, localized_full_days[tm->tm_wday]);
sprintf(s, "%*s", 0, str_initcap(workbuff));
}
else
{
sprintf(s, "%*s", S_FM(n->suffix) ? 0 : -9, days[tm->tm_wday]);
}
s += strlen(s);
break;
case DCH_day:
INVALID_FOR_INTERVAL;
if (S_TM(n->suffix))
{
strcpy(workbuff, localize_day_full(tm->tm_wday));
sprintf(s, "%*s", 0, localized_str_tolower(workbuff));
strcpy(workbuff, localized_full_days[tm->tm_wday]);
sprintf(s, "%*s", 0, str_tolower(workbuff));
}
else
{
@ -1996,30 +2034,35 @@ DCH_to_char(FormatNode *node, bool is_interval, TmToChar *in, char *out)
INVALID_FOR_INTERVAL;
if (S_TM(n->suffix))
{
strcpy(workbuff, localize_day(tm->tm_wday));
strcpy(s, localized_str_toupper(workbuff));
strcpy(workbuff, localized_abbrev_days[tm->tm_wday]);
sprintf(s, "%*s", 0, str_toupper(workbuff));
}
else
{
strcpy(s, days_short[tm->tm_wday]);
str_toupper(s);
strcpy(workbuff, days_short[tm->tm_wday]);
sprintf(s, "%*s", 0, str_toupper(workbuff));
}
s += strlen(s);
break;
case DCH_Dy:
INVALID_FOR_INTERVAL;
if (S_TM(n->suffix))
strcpy(s, localize_day(tm->tm_wday));
{
strcpy(workbuff, localized_abbrev_days[tm->tm_wday]);
sprintf(s, "%*s", 0, str_initcap(workbuff));
}
else
{
strcpy(s, days_short[tm->tm_wday]);
}
s += strlen(s);
break;
case DCH_dy:
INVALID_FOR_INTERVAL;
if (S_TM(n->suffix))
{
strcpy(workbuff, localize_day(tm->tm_wday));
strcpy(s, localized_str_tolower(workbuff));
strcpy(workbuff, localized_abbrev_days[tm->tm_wday]);
sprintf(s, "%*s", 0, str_tolower(workbuff));
}
else
{
@ -2783,174 +2826,6 @@ datetime_to_char_body(TmToChar *tmtc, text *fmt, bool is_interval)
return res;
}
static char *
localize_month_full(int index)
{
char *m = NULL;
switch (index)
{
case 0:
m = _("January");
break;
case 1:
m = _("February");
break;
case 2:
m = _("March");
break;
case 3:
m = _("April");
break;
case 4:
m = _("May");
break;
case 5:
m = _("June");
break;
case 6:
m = _("July");
break;
case 7:
m = _("August");
break;
case 8:
m = _("September");
break;
case 9:
m = _("October");
break;
case 10:
m = _("November");
break;
case 11:
m = _("December");
break;
}
return m;
}
static char *
localize_month(int index)
{
char *m = NULL;
switch (index)
{
case 0:
m = _("Jan");
break;
case 1:
m = _("Feb");
break;
case 2:
m = _("Mar");
break;
case 3:
m = _("Apr");
break;
case 4:
/*------
translator: Translate this as the abbreviation of "May".
In English, it is both the full month name and the
abbreviation, so this hack is needed to distinguish
them. The translation also needs to start with S:,
which will be stripped at run time. */
m = _("S:May") + 2;
break;
case 5:
m = _("Jun");
break;
case 6:
m = _("Jul");
break;
case 7:
m = _("Aug");
break;
case 8:
m = _("Sep");
break;
case 9:
m = _("Oct");
break;
case 10:
m = _("Nov");
break;
case 11:
m = _("Dec");
break;
}
return m;
}
static char *
localize_day_full(int index)
{
char *d = NULL;
switch (index)
{
case 0:
d = _("Sunday");
break;
case 1:
d = _("Monday");
break;
case 2:
d = _("Tuesday");
break;
case 3:
d = _("Wednesday");
break;
case 4:
d = _("Thursday");
break;
case 5:
d = _("Friday");
break;
case 6:
d = _("Saturday");
break;
}
return d;
}
static char *
localize_day(int index)
{
char *d = NULL;
switch (index)
{
case 0:
d = _("Sun");
break;
case 1:
d = _("Mon");
break;
case 2:
d = _("Tue");
break;
case 3:
d = _("Wed");
break;
case 4:
d = _("Thu");
break;
case 5:
d = _("Fri");
break;
case 6:
d = _("Sat");
break;
}
return d;
}
/****************************************************************************
* Public routines
***************************************************************************/

8
src/backend/utils/adt/oracle_compat.c
View File

@ -9,7 +9,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/adt/oracle_compat.c,v 1.78 2008/03/25 22:42:44 tgl Exp $
* $PostgreSQL: pgsql/src/backend/utils/adt/oracle_compat.c,v 1.79 2008/05/19 18:08:16 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -48,6 +48,8 @@
#define USE_WIDE_UPPER_LOWER
char *wstring_lower(char *str);
char *wstring_upper(char *str);
wchar_t *texttowcs(const text *txt);
text *wcstotext(const wchar_t *str, int ncodes);
#endif
static text *dotrim(const char *string, int stringlen,
@ -60,7 +62,7 @@ static text *dotrim(const char *string, int stringlen,
/*
* Convert a TEXT value into a palloc'd wchar string.
*/
static wchar_t *
wchar_t *
texttowcs(const text *txt)
{
int nbytes = VARSIZE_ANY_EXHDR(txt);
@ -112,7 +114,7 @@ texttowcs(const text *txt)
* must be zero-terminated, but we also require the caller to pass the string
* length, since it will know it anyway in current uses.
*/
static text *
text *
wcstotext(const wchar_t *str, int ncodes)
{
text *result;

93
src/backend/utils/adt/pg_locale.c
View File

@ -4,7 +4,7 @@
*
* Portions Copyright (c) 2002-2008, PostgreSQL Global Development Group
*
* $PostgreSQL: pgsql/src/backend/utils/adt/pg_locale.c,v 1.40 2008/01/01 19:45:52 momjian Exp $
* $PostgreSQL: pgsql/src/backend/utils/adt/pg_locale.c,v 1.41 2008/05/19 18:08:16 tgl Exp $
*
*-----------------------------------------------------------------------
*/
@ -48,20 +48,31 @@
#include "postgres.h"
#include <locale.h>
#include <time.h>
#include "catalog/pg_control.h"
#include "utils/memutils.h"
#include "utils/pg_locale.h"
/* GUC storage area */
#define MAX_L10N_DATA 80
/* GUC settings */
char *locale_messages;
char *locale_monetary;
char *locale_numeric;
char *locale_time;
/* lc_time localization cache */
char *localized_abbrev_days[7];
char *localized_full_days[7];
char *localized_abbrev_months[12];
char *localized_full_months[12];
/* indicates whether locale information cache is valid */
static bool CurrentLocaleConvValid = false;
static bool CurrentLCTimeValid = false;
/* Environment variable storage area */
@ -209,7 +220,10 @@ locale_xxx_assign(int category, const char *value, bool doit, GucSource source)
/* need to reload cache next time? */
if (doit && value != NULL)
{
CurrentLocaleConvValid = false;
CurrentLCTimeValid = false;
}
return value;
}
@ -424,3 +438,78 @@ PGLC_localeconv(void)
CurrentLocaleConvValid = true;
return &CurrentLocaleConv;
}
/*
* Update the lc_time localization cache variables if needed.
*/
void
cache_locale_time(void)
{
char *save_lc_time;
time_t timenow;
struct tm *timeinfo;
char buf[MAX_L10N_DATA];
char *ptr;
int i;
/* did we do this already? */
if (CurrentLCTimeValid)
return;
elog(DEBUG3, "cache_locale_time() executed; locale: \"%s\"", locale_time);
/* set user's value of time locale */
save_lc_time = setlocale(LC_TIME, NULL);
if (save_lc_time)
save_lc_time = pstrdup(save_lc_time);
setlocale(LC_TIME, locale_time);
timenow = time(NULL);
timeinfo = localtime(&timenow);
/* localized days */
for (i = 0; i < 7; i++)
{
timeinfo->tm_wday = i;
strftime(buf, MAX_L10N_DATA, "%a", timeinfo);
ptr = MemoryContextStrdup(TopMemoryContext, buf);
if (localized_abbrev_days[i])
pfree(localized_abbrev_days[i]);
localized_abbrev_days[i] = ptr;
strftime(buf, MAX_L10N_DATA, "%A", timeinfo);
ptr = MemoryContextStrdup(TopMemoryContext, buf);
if (localized_full_days[i])
pfree(localized_full_days[i]);
localized_full_days[i] = ptr;
}
/* localized months */
for (i = 0; i < 12; i++)
{
timeinfo->tm_mon = i;
timeinfo->tm_mday = 1; /* make sure we don't have invalid date */
strftime(buf, MAX_L10N_DATA, "%b", timeinfo);
ptr = MemoryContextStrdup(TopMemoryContext, buf);
if (localized_abbrev_months[i])
pfree(localized_abbrev_months[i]);
localized_abbrev_months[i] = ptr;
strftime(buf, MAX_L10N_DATA, "%B", timeinfo);
ptr = MemoryContextStrdup(TopMemoryContext, buf);
if (localized_full_months[i])
pfree(localized_full_months[i]);
localized_full_months[i] = ptr;
}
/* try to restore internal settings */
if (save_lc_time)
{
setlocale(LC_TIME, save_lc_time);
pfree(save_lc_time);
}
CurrentLCTimeValid = true;
}

12
src/include/utils/pg_locale.h
View File

@ -2,7 +2,7 @@
*
* PostgreSQL locale utilities
*
* $PostgreSQL: pgsql/src/include/utils/pg_locale.h,v 1.24 2008/01/01 19:45:59 momjian Exp $
* $PostgreSQL: pgsql/src/include/utils/pg_locale.h,v 1.25 2008/05/19 18:08:16 tgl Exp $
*
* Copyright (c) 2002-2008, PostgreSQL Global Development Group
*
@ -17,11 +17,19 @@
#include "utils/guc.h"
/* GUC settings */
extern char *locale_messages;
extern char *locale_monetary;
extern char *locale_numeric;
extern char *locale_time;
/* lc_time localization cache */
extern char *localized_abbrev_days[];
extern char *localized_full_days[];
extern char *localized_abbrev_months[];
extern char *localized_full_months[];
extern const char *locale_messages_assign(const char *value,
bool doit, GucSource source);
extern const char *locale_monetary_assign(const char *value,
@ -42,4 +50,6 @@ extern bool lc_ctype_is_c(void);
*/
extern struct lconv *PGLC_localeconv(void);
extern void cache_locale_time(void);
#endif /* _PG_LOCALE_ */