* Updating common/lib * Updating lib/csu * Updating lib/libc * Updating libexec/ld.elf_so * Corrected test on __minix in featuretest to actually follow the meaning of the comment. * Cleaned up _REENTRANT-related defintions. * Disabled -D_REENTRANT for libfetch * Removing some unneeded __NBSD_LIBC defines and tests Change-Id: Ic1394baef74d11b9f86b312f5ff4bbc3cbf72ce2
629 lines
16 KiB
C
629 lines
16 KiB
C
/* $NetBSD: strfmon.c,v 1.10 2012/03/21 14:19:15 christos Exp $ */
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/*-
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* Copyright (c) 2001 Alexey Zelkin <phantom@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#include <sys/cdefs.h>
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#if defined(LIBC_SCCS) && !defined(lint)
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#if 0
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__FBSDID("$FreeBSD: src/lib/libc/stdlib/strfmon.c,v 1.14 2003/03/20 08:18:55 ache Exp $");
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#else
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__RCSID("$NetBSD: strfmon.c,v 1.10 2012/03/21 14:19:15 christos Exp $");
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#endif
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#endif /* LIBC_SCCS and not lint */
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#if defined(__NetBSD__) || defined(__minix)
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#include "namespace.h"
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#include <monetary.h>
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#endif
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#include <sys/types.h>
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#include <assert.h>
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#include <ctype.h>
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#include <errno.h>
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#include <limits.h>
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#include <locale.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stddef.h>
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/* internal flags */
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#define NEED_GROUPING 0x01 /* print digits grouped (default) */
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#define SIGN_POSN_USED 0x02 /* '+' or '(' usage flag */
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#define LOCALE_POSN 0x04 /* use locale defined +/- (default) */
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#define PARENTH_POSN 0x08 /* enclose negative amount in () */
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#define SUPRESS_CURR_SYMBOL 0x10 /* supress the currency from output */
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#define LEFT_JUSTIFY 0x20 /* left justify */
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#define USE_INTL_CURRENCY 0x40 /* use international currency symbol */
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#define IS_NEGATIVE 0x80 /* is argument value negative ? */
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#ifndef NBCHAR_MAX
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#define NBCHAR_MAX ((unsigned char)CHAR_MAX)
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#endif
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/* internal macros */
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#define PRINT(CH) do { \
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if (dst >= s + maxsize) \
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goto e2big_error; \
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*dst++ = CH; \
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} while (/* CONSTCOND */ 0)
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#define PRINTS(STR) do { \
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const char *tmps = STR; \
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while (*tmps != '\0') \
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PRINT(*tmps++); \
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} while (/* CONSTCOND */ 0)
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#define GET_NUMBER(VAR) do { \
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VAR = 0; \
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while (isdigit((unsigned char)*fmt)) { \
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VAR *= 10; \
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VAR += *fmt - '0'; \
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if (VAR > 0x00ffffff) \
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goto e2big_error; \
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fmt++; \
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} \
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} while (/* CONSTCOND */ 0)
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#define GRPCPY(howmany) do { \
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int i = howmany; \
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while (i-- > 0) { \
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avalue_size--; \
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*--bufend = *(avalue+avalue_size+padded); \
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} \
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} while (/* CONSTCOND */ 0)
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#define GRPSEP do { \
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*--bufend = thousands_sep; \
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groups++; \
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} while (/* CONSTCOND */ 0)
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static void __setup_vars(int, char *, char *, char *, const char **);
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static int __calc_left_pad(int, char *);
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static char *__format_grouped_double(double, int *, int, int, int);
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ssize_t
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strfmon(char * __restrict s, size_t maxsize, const char * __restrict format,
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...)
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{
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va_list ap;
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char *dst; /* output destination pointer */
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const char *fmt; /* current format poistion pointer */
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struct lconv *lc; /* pointer to lconv structure */
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char *asciivalue; /* formatted double pointer */
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int flags; /* formatting options */
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int pad_char; /* padding character */
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int pad_size; /* pad size */
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int width; /* field width */
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int left_prec; /* left precision */
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int right_prec; /* right precision */
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double value; /* just value */
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char space_char = ' '; /* space after currency */
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char cs_precedes, /* values gathered from struct lconv */
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sep_by_space,
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sign_posn,
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*currency_symbol;
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const char *signstr;
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char *tmpptr; /* temporary vars */
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int sverrno;
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va_start(ap, format);
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lc = localeconv();
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dst = s;
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fmt = format;
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asciivalue = NULL;
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currency_symbol = NULL;
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pad_size = 0;
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while (*fmt) {
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/* pass nonformating characters AS IS */
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if (*fmt != '%')
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goto literal;
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/* '%' found ! */
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/* "%%" mean just '%' */
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if (*(fmt+1) == '%') {
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fmt++;
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literal:
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PRINT(*fmt++);
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continue;
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}
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/* set up initial values */
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flags = (NEED_GROUPING|LOCALE_POSN);
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pad_char = ' '; /* padding character is "space" */
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left_prec = -1; /* no left precision specified */
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right_prec = -1; /* no right precision specified */
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width = -1; /* no width specified */
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value = 0; /* we have no value to print now */
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/* Flags */
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while (/* CONSTCOND */ 1) {
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switch (*++fmt) {
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case '=': /* fill character */
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pad_char = *++fmt;
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if (pad_char == '\0')
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goto format_error;
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continue;
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case '^': /* not group currency */
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flags &= ~(NEED_GROUPING);
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continue;
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case '+': /* use locale defined signs */
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if (flags & SIGN_POSN_USED)
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goto format_error;
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flags |= (SIGN_POSN_USED|LOCALE_POSN);
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continue;
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case '(': /* enclose negatives with () */
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if (flags & SIGN_POSN_USED)
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goto format_error;
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flags |= (SIGN_POSN_USED|PARENTH_POSN);
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continue;
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case '!': /* suppress currency symbol */
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flags |= SUPRESS_CURR_SYMBOL;
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continue;
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case '-': /* alignment (left) */
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flags |= LEFT_JUSTIFY;
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continue;
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default:
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break;
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}
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break;
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}
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/* field Width */
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if (isdigit((unsigned char)*fmt)) {
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ptrdiff_t d = dst - s;
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GET_NUMBER(width);
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/* Do we have enough space to put number with
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* required width ?
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*/
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if ((size_t)(d + width) >= maxsize)
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goto e2big_error;
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}
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/* Left precision */
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if (*fmt == '#') {
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if (!isdigit((unsigned char)*++fmt))
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goto format_error;
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GET_NUMBER(left_prec);
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}
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/* Right precision */
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if (*fmt == '.') {
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if (!isdigit((unsigned char)*++fmt))
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goto format_error;
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GET_NUMBER(right_prec);
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}
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/* Conversion Characters */
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switch (*fmt++) {
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case 'i': /* use internaltion currency format */
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flags |= USE_INTL_CURRENCY;
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break;
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case 'n': /* use national currency format */
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flags &= ~(USE_INTL_CURRENCY);
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break;
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default: /* required character is missing or
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premature EOS */
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goto format_error;
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}
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if (currency_symbol)
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free(currency_symbol);
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if (flags & USE_INTL_CURRENCY) {
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currency_symbol = strdup(lc->int_curr_symbol);
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if (currency_symbol != NULL)
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space_char = *(currency_symbol+3);
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} else
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currency_symbol = strdup(lc->currency_symbol);
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if (currency_symbol == NULL)
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goto end_error; /* ENOMEM. */
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/* value itself */
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value = va_arg(ap, double);
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/* detect sign */
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if (value < 0) {
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flags |= IS_NEGATIVE;
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value = -value;
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}
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/* fill left_prec with amount of padding chars */
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if (left_prec >= 0) {
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pad_size = __calc_left_pad((flags ^ IS_NEGATIVE),
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currency_symbol) -
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__calc_left_pad(flags, currency_symbol);
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if (pad_size < 0)
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pad_size = 0;
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}
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asciivalue = __format_grouped_double(value, &flags,
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left_prec, right_prec, pad_char);
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if (asciivalue == NULL)
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goto end_error; /* errno already set */
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/* to ENOMEM by malloc() */
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/* set some variables for later use */
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__setup_vars(flags, &cs_precedes, &sep_by_space,
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&sign_posn, &signstr);
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/*
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* Description of some LC_MONETARY's values:
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*
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* p_cs_precedes & n_cs_precedes
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*
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* = 1 - $currency_symbol precedes the value
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* for a monetary quantity with a non-negative value
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* = 0 - symbol succeeds the value
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*
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* p_sep_by_space & n_sep_by_space
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*
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* = 0 - no space separates $currency_symbol
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* from the value for a monetary quantity with a
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* non-negative value
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* = 1 - space separates the symbol from the value
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* = 2 - space separates the symbol and the sign string,
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* if adjacent.
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*
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* p_sign_posn & n_sign_posn
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*
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* = 0 - parentheses enclose the quantity and the
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* $currency_symbol
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* = 1 - the sign string precedes the quantity and the
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* $currency_symbol
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* = 2 - the sign string succeeds the quantity and the
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* $currency_symbol
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* = 3 - the sign string precedes the $currency_symbol
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* = 4 - the sign string succeeds the $currency_symbol
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*
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*/
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tmpptr = dst;
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while (pad_size-- > 0)
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PRINT(' ');
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if (sign_posn == 0 && (flags & IS_NEGATIVE))
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PRINT('(');
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if (cs_precedes == 1) {
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if (sign_posn == 1 || sign_posn == 3) {
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PRINTS(signstr);
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if (sep_by_space == 2) /* XXX: ? */
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PRINT(' ');
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}
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if (!(flags & SUPRESS_CURR_SYMBOL)) {
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PRINTS(currency_symbol);
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if (sign_posn == 4) {
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if (sep_by_space == 2)
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PRINT(space_char);
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PRINTS(signstr);
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if (sep_by_space == 1)
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PRINT(' ');
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} else if (sep_by_space == 1)
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PRINT(space_char);
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}
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} else if (sign_posn == 1)
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PRINTS(signstr);
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PRINTS(asciivalue);
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if (cs_precedes == 0) {
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if (sign_posn == 3) {
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if (sep_by_space == 1)
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PRINT(' ');
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PRINTS(signstr);
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}
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if (!(flags & SUPRESS_CURR_SYMBOL)) {
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if ((sign_posn == 3 && sep_by_space == 2)
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|| (sep_by_space == 1
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&& (sign_posn == 0
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|| sign_posn == 1
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|| sign_posn == 2
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|| sign_posn == 4)))
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PRINT(space_char);
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PRINTS(currency_symbol); /* XXX: len */
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if (sign_posn == 4) {
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if (sep_by_space == 2)
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PRINT(' ');
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PRINTS(signstr);
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}
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}
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}
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if (sign_posn == 2) {
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if (sep_by_space == 2)
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PRINT(' ');
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PRINTS(signstr);
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}
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if (sign_posn == 0 && (flags & IS_NEGATIVE))
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PRINT(')');
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if (dst - tmpptr < width) {
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if (flags & LEFT_JUSTIFY) {
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while (dst - tmpptr < width)
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PRINT(' ');
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} else {
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_DIAGASSERT(__type_fit(int, dst - tmpptr));
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pad_size = dst - tmpptr;
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memmove(tmpptr + width-pad_size, tmpptr,
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(size_t) pad_size);
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memset(tmpptr, ' ', (size_t) width-pad_size);
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dst += width-pad_size;
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}
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}
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}
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PRINT('\0');
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va_end(ap);
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free(asciivalue);
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free(currency_symbol);
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return (dst - s - 1); /* return size of put data except trailing '\0' */
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e2big_error:
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errno = E2BIG;
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goto end_error;
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format_error:
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errno = EINVAL;
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end_error:
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sverrno = errno;
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if (asciivalue != NULL)
|
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free(asciivalue);
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if (currency_symbol != NULL)
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free(currency_symbol);
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errno = sverrno;
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va_end(ap);
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return (-1);
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}
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|
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static void
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__setup_vars(int flags, char *cs_precedes, char *sep_by_space,
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char *sign_posn, const char **signstr) {
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struct lconv *lc = localeconv();
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|
|
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if ((flags & IS_NEGATIVE) && (flags & USE_INTL_CURRENCY)) {
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*cs_precedes = lc->int_n_cs_precedes;
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*sep_by_space = lc->int_n_sep_by_space;
|
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*sign_posn = (flags & PARENTH_POSN) ? 0 : lc->int_n_sign_posn;
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*signstr = (lc->negative_sign == '\0') ? "-"
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: lc->negative_sign;
|
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} else if (flags & USE_INTL_CURRENCY) {
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*cs_precedes = lc->int_p_cs_precedes;
|
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*sep_by_space = lc->int_p_sep_by_space;
|
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*sign_posn = (flags & PARENTH_POSN) ? 0 : lc->int_p_sign_posn;
|
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*signstr = lc->positive_sign;
|
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} else if (flags & IS_NEGATIVE) {
|
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*cs_precedes = lc->n_cs_precedes;
|
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*sep_by_space = lc->n_sep_by_space;
|
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*sign_posn = (flags & PARENTH_POSN) ? 0 : lc->n_sign_posn;
|
|
*signstr = (lc->negative_sign == '\0') ? "-"
|
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: lc->negative_sign;
|
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} else {
|
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*cs_precedes = lc->p_cs_precedes;
|
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*sep_by_space = lc->p_sep_by_space;
|
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*sign_posn = (flags & PARENTH_POSN) ? 0 : lc->p_sign_posn;
|
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*signstr = lc->positive_sign;
|
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}
|
|
|
|
/* Set defult values for unspecified information. */
|
|
if (*cs_precedes != 0)
|
|
*cs_precedes = 1;
|
|
if ((unsigned char)*sep_by_space == NBCHAR_MAX)
|
|
*sep_by_space = 0;
|
|
if ((unsigned char)*sign_posn == NBCHAR_MAX)
|
|
*sign_posn = 0;
|
|
}
|
|
|
|
static int
|
|
__calc_left_pad(int flags, char *cur_symb) {
|
|
|
|
char cs_precedes, sep_by_space, sign_posn;
|
|
const char *signstr;
|
|
size_t left_chars = 0;
|
|
|
|
__setup_vars(flags, &cs_precedes, &sep_by_space, &sign_posn, &signstr);
|
|
|
|
if (cs_precedes != 0) {
|
|
left_chars += strlen(cur_symb);
|
|
if (sep_by_space != 0)
|
|
left_chars++;
|
|
}
|
|
|
|
switch (sign_posn) {
|
|
case 1:
|
|
left_chars += strlen(signstr);
|
|
break;
|
|
case 3:
|
|
case 4:
|
|
if (cs_precedes != 0)
|
|
left_chars += strlen(signstr);
|
|
}
|
|
_DIAGASSERT(__type_fit(int, left_chars));
|
|
return (int)left_chars;
|
|
}
|
|
|
|
static int
|
|
get_groups(int size, char *grouping) {
|
|
|
|
int chars = 0;
|
|
|
|
if ((unsigned char)*grouping == NBCHAR_MAX || *grouping <= 0) /* no grouping ? */
|
|
return (0);
|
|
|
|
while (size > (int)*grouping) {
|
|
chars++;
|
|
size -= (int)*grouping++;
|
|
/* no more grouping ? */
|
|
if ((unsigned char)*grouping == NBCHAR_MAX)
|
|
break;
|
|
/* rest grouping with same value ? */
|
|
if (*grouping == 0) {
|
|
chars += (size - 1) / *(grouping - 1);
|
|
break;
|
|
}
|
|
}
|
|
return (chars);
|
|
}
|
|
|
|
/* convert double to ASCII */
|
|
static char *
|
|
__format_grouped_double(double value, int *flags,
|
|
int left_prec, int right_prec, int pad_char) {
|
|
|
|
char *rslt;
|
|
char *avalue;
|
|
int avalue_size;
|
|
|
|
size_t bufsize;
|
|
char *bufend;
|
|
|
|
int padded;
|
|
|
|
struct lconv *lc = localeconv();
|
|
char *grouping;
|
|
char decimal_point;
|
|
char thousands_sep;
|
|
|
|
int groups = 0;
|
|
|
|
grouping = lc->mon_grouping;
|
|
decimal_point = *lc->mon_decimal_point;
|
|
if (decimal_point == '\0')
|
|
decimal_point = *lc->decimal_point;
|
|
thousands_sep = *lc->mon_thousands_sep;
|
|
if (thousands_sep == '\0')
|
|
thousands_sep = *lc->thousands_sep;
|
|
|
|
/* fill left_prec with default value */
|
|
if (left_prec == -1)
|
|
left_prec = 0;
|
|
|
|
/* fill right_prec with default value */
|
|
if (right_prec == -1) {
|
|
if (*flags & USE_INTL_CURRENCY)
|
|
right_prec = lc->int_frac_digits;
|
|
else
|
|
right_prec = lc->frac_digits;
|
|
|
|
if (right_prec == CHAR_MAX) /* POSIX locale ? */
|
|
right_prec = 2;
|
|
}
|
|
|
|
if (*flags & NEED_GROUPING)
|
|
left_prec += get_groups(left_prec, grouping);
|
|
|
|
/* convert to string */
|
|
avalue_size = asprintf(&avalue, "%*.*f", left_prec + right_prec + 1,
|
|
right_prec, value);
|
|
if (avalue_size < 0)
|
|
return (NULL);
|
|
|
|
/* make sure that we've enough space for result string */
|
|
bufsize = avalue_size * 2 + 1;
|
|
rslt = malloc(bufsize);
|
|
if (rslt == NULL) {
|
|
free(avalue);
|
|
return (NULL);
|
|
}
|
|
memset(rslt, 0, bufsize);
|
|
bufend = rslt + bufsize - 1; /* reserve space for trailing '\0' */
|
|
|
|
/* skip spaces at beggining */
|
|
padded = 0;
|
|
while (avalue[padded] == ' ') {
|
|
padded++;
|
|
avalue_size--;
|
|
}
|
|
|
|
if (right_prec > 0) {
|
|
bufend -= right_prec;
|
|
memcpy(bufend, avalue + avalue_size+padded-right_prec,
|
|
(size_t) right_prec);
|
|
*--bufend = decimal_point;
|
|
avalue_size -= (right_prec + 1);
|
|
}
|
|
|
|
/* XXX: Why not use %' instead? */
|
|
if ((*flags & NEED_GROUPING) &&
|
|
thousands_sep != '\0' && /* XXX: need investigation */
|
|
(unsigned char)*grouping != NBCHAR_MAX &&
|
|
*grouping > 0) {
|
|
while (avalue_size > (int)*grouping) {
|
|
GRPCPY(*grouping);
|
|
GRPSEP;
|
|
grouping++;
|
|
|
|
/* no more grouping ? */
|
|
if ((unsigned char)*grouping == NBCHAR_MAX)
|
|
break;
|
|
|
|
/* rest grouping with same value ? */
|
|
if (*grouping == 0) {
|
|
grouping--;
|
|
while (avalue_size > *grouping) {
|
|
GRPCPY(*grouping);
|
|
GRPSEP;
|
|
}
|
|
}
|
|
}
|
|
if (avalue_size != 0)
|
|
GRPCPY(avalue_size);
|
|
padded -= groups;
|
|
|
|
} else {
|
|
bufend -= avalue_size;
|
|
memcpy(bufend, avalue+padded, (size_t) avalue_size);
|
|
if (right_prec == 0)
|
|
padded--; /* decrease assumed $decimal_point */
|
|
}
|
|
|
|
/* do padding with pad_char */
|
|
if (padded > 0) {
|
|
bufend -= padded;
|
|
memset(bufend, pad_char, (size_t) padded);
|
|
}
|
|
|
|
bufsize = bufsize - (bufend - rslt) + 1;
|
|
memmove(rslt, bufend, bufsize);
|
|
free(avalue);
|
|
return (rslt);
|
|
}
|