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Add support to port/snprintf.c for position parameter specification:

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+ # Determine if printf supports %1$ argument selection, e.g. %5$ selects
+ # the fifth argument after the printf print string.
+ # This is not in the C99 standard, but in the Single Unix Specification (SUS).
+ # It is used in our langauge translation strings.

Nicolai Tufar with configure changes by Bruce.
This commit is contained in:
Bruce Momjian
2005-02-22 03:56:22 +00:00
parent 78bb800bc2
commit b4feafb6ff
4 changed files with 294 additions and 16 deletions
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35
config/c-library.m4
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@ -1,5 +1,5 @@
# Macros that test various C library quirks
# $PostgreSQL: pgsql/config/c-library.m4,v 1.29 2004/12/16 17:48:26 momjian Exp $
# $PostgreSQL: pgsql/config/c-library.m4,v 1.30 2005/02/22 03:55:50 momjian Exp $
# PGAC_VAR_INT_TIMEZONE
@ -266,3 +266,36 @@ case $pgac_cv_snprintf_long_long_int_format in
LONG_LONG_INT_FORMAT=$pgac_cv_snprintf_long_long_int_format;;
*) AC_MSG_RESULT(none);;
esac])# PGAC_FUNC_SNPRINTF_LONG_LONG_INT_FORMAT
# PGAC_FUNC_PRINTF_ARG_CONTROL
# ---------------------------------------
# Determine if printf supports %1$ argument selection, e.g. %5$ selects
# the fifth argument after the printf print string.
# This is not in the C99 standard, but in the Single Unix Specification (SUS).
# It is used in our langauge translation strings.
#
AC_DEFUN([PGAC_FUNC_PRINTF_ARG_CONTROL],
[AC_MSG_CHECKING([printf supports argument control])
AC_CACHE_VAL(pgac_cv_printf_arg_control,
[AC_TRY_RUN([#include <stdio.h>
int does_printf_have_arg_control()
{
char buf[100];
/* can it swap arguments? */
snprintf(buf, 100, "%2$d|%1$d", 3, 4);
if (strcmp(buf, "4|3") != 0)
return 0;
return 1;
}
main() {
exit(! does_printf_have_arg_control());
}],
[pgac_cv_printf_arg_control=yes],
[pgac_cv_printf_arg_control=no],
[pgac_cv_printf_arg_control=cross])
])dnl AC_CACHE_VAL
AC_MSG_RESULT([$pgac_cv_printf_arg_control])
])# PGAC_FUNC_PRINTF_ARG_CONTROL