--- /dev/null
+/*-
+ * Copyright (c) 2001 Alexey Zelkin <phantom@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD: src/lib/libc/stdlib/strfmon.c,v 1.14 2003/03/20 08:18:55 ache Exp $");
+
+#include "xlocale_private.h"
+
+#include <sys/types.h>
+#include <ctype.h>
+#include <errno.h>
+#include <limits.h>
+#include <locale.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+/* internal flags */
+#define NEED_GROUPING 0x01 /* print digits grouped (default) */
+#define SIGN_POSN_USED 0x02 /* '+' or '(' usage flag */
+#define LOCALE_POSN 0x04 /* use locale defined +/- (default) */
+#define PARENTH_POSN 0x08 /* enclose negative amount in () */
+#define SUPRESS_CURR_SYMBOL 0x10 /* supress the currency from output */
+#define LEFT_JUSTIFY 0x20 /* left justify */
+#define USE_INTL_CURRENCY 0x40 /* use international currency symbol */
+#define IS_NEGATIVE 0x80 /* is argument value negative ? */
+
+/* internal macros */
+#define PRINT(CH) do { \
+ if (dst >= s + maxsize) \
+ goto e2big_error; \
+ *dst++ = CH; \
+} while (0)
+
+#define PRINTS(STR) do { \
+ char *tmps = STR; \
+ while (*tmps != '\0') \
+ PRINT(*tmps++); \
+} while (0)
+
+#define GET_NUMBER(VAR,LOC) do { \
+ VAR = 0; \
+ while (isdigit_l((unsigned char)*fmt, (LOC))) { \
+ VAR *= 10; \
+ VAR += *fmt - '0'; \
+ fmt++; \
+ } \
+} while (0)
+
+#define GRPCPY(howmany) do { \
+ int i = howmany; \
+ while (i-- > 0) { \
+ avalue_size--; \
+ *--bufend = *(avalue+avalue_size+padded); \
+ } \
+} while (0)
+
+#define GRPSEP do { \
+ *--bufend = thousands_sep; \
+ groups++; \
+} while (0)
+
+static void __setup_vars(int, char *, char *, char *, char **, struct lconv *);
+static int __calc_left_pad(int, char *, struct lconv *);
+static char *__format_grouped_double(double, int *, int, int, int, struct lconv *, locale_t);
+
+static ssize_t
+_strfmon(char * __restrict s, size_t maxsize, locale_t loc,
+ const char * __restrict format, va_list ap)
+{
+ char *dst; /* output destination pointer */
+ const char *fmt; /* current format poistion pointer */
+ struct lconv *lc; /* pointer to lconv structure */
+ char *asciivalue; /* formatted double pointer */
+
+ int flags; /* formatting options */
+ int pad_char; /* padding character */
+ int pad_size; /* pad size */
+ int width; /* field width */
+ int left_prec; /* left precision */
+ int right_prec; /* right precision */
+ double value; /* just value */
+ char space_char = ' '; /* space after currency */
+
+ char cs_precedes, /* values gathered from struct lconv */
+ sep_by_space,
+ sign_posn,
+ *signstr,
+ *currency_symbol;
+
+ char *tmpptr; /* temporary vars */
+ int sverrno;
+
+ lc = localeconv_l(loc);
+ dst = s;
+ fmt = format;
+ asciivalue = NULL;
+ currency_symbol = NULL;
+ pad_size = 0;
+
+ while (*fmt) {
+ /* pass nonformating characters AS IS */
+ if (*fmt != '%')
+ goto literal;
+
+ /* '%' found ! */
+
+ /* "%%" mean just '%' */
+ if (*(fmt+1) == '%') {
+ fmt++;
+ literal:
+ PRINT(*fmt++);
+ continue;
+ }
+
+ /* set up initial values */
+ flags = (NEED_GROUPING|LOCALE_POSN);
+ pad_char = ' '; /* padding character is "space" */
+ left_prec = -1; /* no left precision specified */
+ right_prec = -1; /* no right precision specified */
+ width = -1; /* no width specified */
+ value = 0; /* we have no value to print now */
+
+ /* Flags */
+ while (1) {
+ switch (*++fmt) {
+ case '=': /* fill character */
+ pad_char = *++fmt;
+ if (pad_char == '\0')
+ goto format_error;
+ continue;
+ case '^': /* not group currency */
+ flags &= ~(NEED_GROUPING);
+ continue;
+ case '+': /* use locale defined signs */
+ if (flags & SIGN_POSN_USED)
+ goto format_error;
+ flags |= (SIGN_POSN_USED|LOCALE_POSN);
+ continue;
+ case '(': /* enclose negatives with () */
+ if (flags & SIGN_POSN_USED)
+ goto format_error;
+ flags |= (SIGN_POSN_USED|PARENTH_POSN);
+ continue;
+ case '!': /* suppress currency symbol */
+ flags |= SUPRESS_CURR_SYMBOL;
+ continue;
+ case '-': /* alignment (left) */
+ flags |= LEFT_JUSTIFY;
+ continue;
+ default:
+ break;
+ }
+ break;
+ }
+
+ /* field Width */
+ if (isdigit_l((unsigned char)*fmt, loc)) {
+ GET_NUMBER(width, loc);
+ /* Do we have enough space to put number with
+ * required width ?
+ */
+ if (dst + width >= s + maxsize)
+ goto e2big_error;
+ }
+
+ /* Left precision */
+ if (*fmt == '#') {
+ if (!isdigit_l((unsigned char)*++fmt, loc))
+ goto format_error;
+ GET_NUMBER(left_prec, loc);
+ }
+
+ /* Right precision */
+ if (*fmt == '.') {
+ if (!isdigit_l((unsigned char)*++fmt, loc))
+ goto format_error;
+ GET_NUMBER(right_prec, loc);
+ }
+
+ /* Conversion Characters */
+ switch (*fmt++) {
+ case 'i': /* use internaltion currency format */
+ flags |= USE_INTL_CURRENCY;
+ break;
+ case 'n': /* use national currency format */
+ flags &= ~(USE_INTL_CURRENCY);
+ break;
+ default: /* required character is missing or
+ premature EOS */
+ goto format_error;
+ }
+
+ if (flags & USE_INTL_CURRENCY) {
+ currency_symbol = strdup(lc->int_curr_symbol);
+ if (currency_symbol != NULL) {
+ space_char = *(currency_symbol+3);
+ currency_symbol[3] = '\0';
+ }
+ } else
+ currency_symbol = strdup(lc->currency_symbol);
+
+ if (currency_symbol == NULL)
+ goto end_error; /* ENOMEM. */
+
+ /* value itself */
+ value = va_arg(ap, double);
+
+ /* detect sign */
+ if (value < 0) {
+ flags |= IS_NEGATIVE;
+ value = -value;
+ }
+
+ /* fill left_prec with amount of padding chars */
+ if (left_prec >= 0) {
+ pad_size = __calc_left_pad((flags ^ IS_NEGATIVE),
+ currency_symbol, lc) -
+ __calc_left_pad(flags, currency_symbol, lc);
+ if (pad_size < 0)
+ pad_size = 0;
+ }
+
+ asciivalue = __format_grouped_double(value, &flags,
+ left_prec, right_prec, pad_char, lc, loc);
+ if (asciivalue == NULL)
+ goto end_error; /* errno already set */
+ /* to ENOMEM by malloc() */
+
+ /* set some variables for later use */
+ __setup_vars(flags, &cs_precedes, &sep_by_space,
+ &sign_posn, &signstr, lc);
+
+ /*
+ * Description of some LC_MONETARY's values:
+ *
+ * p_cs_precedes & n_cs_precedes
+ *
+ * = 1 - $currency_symbol precedes the value
+ * for a monetary quantity with a non-negative value
+ * = 0 - symbol succeeds the value
+ *
+ * p_sep_by_space & n_sep_by_space
+ *
+ * = 0 - no space separates $currency_symbol
+ * from the value for a monetary quantity with a
+ * non-negative value
+ * = 1 - space separates the symbol from the value
+ * = 2 - space separates the symbol and the sign string,
+ * if adjacent.
+ *
+ * p_sign_posn & n_sign_posn
+ *
+ * = 0 - parentheses enclose the quantity and the
+ * $currency_symbol
+ * = 1 - the sign string precedes the quantity and the
+ * $currency_symbol
+ * = 2 - the sign string succeeds the quantity and the
+ * $currency_symbol
+ * = 3 - the sign string precedes the $currency_symbol
+ * = 4 - the sign string succeeds the $currency_symbol
+ *
+ */
+
+ tmpptr = dst;
+
+ while (pad_size-- > 0)
+ PRINT(' ');
+
+ if (sign_posn == 0 && (flags & IS_NEGATIVE))
+ PRINT('(');
+
+ if (cs_precedes == 1) {
+ if (sign_posn == 1 || sign_posn == 3) {
+ PRINTS(signstr);
+ if (sep_by_space == 2) /* XXX: ? */
+ PRINT(' ');
+ }
+
+ if (!(flags & SUPRESS_CURR_SYMBOL)) {
+ PRINTS(currency_symbol);
+
+ if (sign_posn == 4) {
+ if (sep_by_space == 2)
+ PRINT(space_char);
+ PRINTS(signstr);
+ if (sep_by_space == 1)
+ PRINT(' ');
+ } else if (sep_by_space == 1)
+ PRINT(space_char);
+ }
+ } else if (sign_posn == 1) {
+ PRINTS(signstr);
+ if (sep_by_space == 2)
+ PRINT(' ');
+ }
+
+ PRINTS(asciivalue);
+
+ if (cs_precedes == 0) {
+ if (sign_posn == 3) {
+ if (sep_by_space == 1)
+ PRINT(' ');
+ PRINTS(signstr);
+ }
+
+ if (!(flags & SUPRESS_CURR_SYMBOL)) {
+ if ((sign_posn == 3 && sep_by_space == 2)
+ || (sep_by_space == 1
+ && (sign_posn == 0
+ || sign_posn == 1
+ || sign_posn == 2
+ || sign_posn == 4)))
+ PRINT(space_char);
+ PRINTS(currency_symbol); /* XXX: len */
+ if (sign_posn == 4) {
+ if (sep_by_space == 2)
+ PRINT(' ');
+ PRINTS(signstr);
+ }
+ }
+ }
+
+ if (sign_posn == 2) {
+ if (sep_by_space == 2)
+ PRINT(' ');
+ PRINTS(signstr);
+ }
+
+ if (sign_posn == 0) {
+ if (flags & IS_NEGATIVE)
+ PRINT(')');
+ else if (left_prec >= 0)
+ PRINT(' ');
+ }
+
+ if (dst - tmpptr < width) {
+ if (flags & LEFT_JUSTIFY) {
+ while (dst - tmpptr < width)
+ PRINT(' ');
+ } else {
+ pad_size = dst-tmpptr;
+ memmove(tmpptr + width-pad_size, tmpptr,
+ pad_size);
+ memset(tmpptr, ' ', width-pad_size);
+ dst += width-pad_size;
+ }
+ }
+ }
+
+ PRINT('\0');
+ free(asciivalue);
+ free(currency_symbol);
+ return (dst - s - 1); /* return size of put data except trailing '\0' */
+
+e2big_error:
+ errno = E2BIG;
+ goto end_error;
+
+format_error:
+ errno = EINVAL;
+
+end_error:
+ sverrno = errno;
+ if (asciivalue != NULL)
+ free(asciivalue);
+ if (currency_symbol != NULL)
+ free(currency_symbol);
+ errno = sverrno;
+ return (-1);
+}
+
+static void
+__setup_vars(int flags, char *cs_precedes, char *sep_by_space,
+ char *sign_posn, char **signstr, struct lconv *lc) {
+
+ if ((flags & IS_NEGATIVE) && (flags & USE_INTL_CURRENCY)) {
+ *cs_precedes = lc->int_n_cs_precedes;
+ *sep_by_space = lc->int_n_sep_by_space;
+ *sign_posn = (flags & PARENTH_POSN) ? 0 : lc->int_n_sign_posn;
+ *signstr = (lc->negative_sign == '\0') ? "-"
+ : lc->negative_sign;
+ } else if (flags & USE_INTL_CURRENCY) {
+ *cs_precedes = lc->int_p_cs_precedes;
+ *sep_by_space = lc->int_p_sep_by_space;
+ *sign_posn = (flags & PARENTH_POSN) ? 0 : lc->int_p_sign_posn;
+ *signstr = lc->positive_sign;
+ } else if (flags & IS_NEGATIVE) {
+ *cs_precedes = lc->n_cs_precedes;
+ *sep_by_space = lc->n_sep_by_space;
+ *sign_posn = (flags & PARENTH_POSN) ? 0 : lc->n_sign_posn;
+ *signstr = (lc->negative_sign == '\0') ? "-"
+ : lc->negative_sign;
+ } else {
+ *cs_precedes = lc->p_cs_precedes;
+ *sep_by_space = lc->p_sep_by_space;
+ *sign_posn = (flags & PARENTH_POSN) ? 0 : lc->p_sign_posn;
+ *signstr = lc->positive_sign;
+ }
+
+ /* Set defult values for unspecified information. */
+ if (*cs_precedes != 0)
+ *cs_precedes = 1;
+ if (*sep_by_space == CHAR_MAX)
+ *sep_by_space = 0;
+ if (*sign_posn == CHAR_MAX)
+ *sign_posn = 0;
+}
+
+static int
+__calc_left_pad(int flags, char *cur_symb, struct lconv *lc) {
+
+ char cs_precedes, sep_by_space, sign_posn, *signstr;
+ int left_chars = 0;
+
+ __setup_vars(flags, &cs_precedes, &sep_by_space, &sign_posn, &signstr, lc);
+
+ if (cs_precedes != 0) {
+ left_chars += strlen(cur_symb);
+ if (sep_by_space != 0)
+ left_chars++;
+ }
+
+ switch (sign_posn) {
+ case 0:
+ if (flags & IS_NEGATIVE)
+ left_chars++;
+ break;
+ case 1:
+ left_chars += strlen(signstr);
+ break;
+ case 3:
+ case 4:
+ if (cs_precedes != 0)
+ left_chars += strlen(signstr);
+ }
+ return (left_chars);
+}
+
+static int
+get_groups(int size, char *grouping) {
+
+ int chars = 0;
+
+ if (*grouping == CHAR_MAX || *grouping <= 0) /* no grouping ? */
+ return (0);
+
+ while (size > (int)*grouping) {
+ chars++;
+ size -= (int)*grouping++;
+ /* no more grouping ? */
+ if (*grouping == CHAR_MAX)
+ break;
+ /* rest grouping with same value ? */
+ if (*grouping == 0) {
+ chars += (size - 1) / *(grouping - 1);
+ break;
+ }
+ }
+ return (chars);
+}
+
+/* convert double to ASCII */
+__private_extern__ const char *__fix_nogrouping(const char *);
+
+static char *
+__format_grouped_double(double value, int *flags,
+ int left_prec, int right_prec, int pad_char, struct lconv *lc, locale_t loc) {
+
+ char *rslt;
+ char *avalue;
+ int avalue_size;
+ char fmt[32];
+
+ size_t bufsize;
+ char *bufend;
+
+ int padded;
+
+ char *grouping;
+ char decimal_point;
+ char thousands_sep;
+
+ int groups = 0;
+
+ grouping = __fix_nogrouping(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 */
+ snprintf_l(fmt, sizeof(fmt), loc, "%%%d.%df", left_prec + right_prec + 1,
+ right_prec);
+ avalue_size = asprintf_l(&avalue, loc, fmt, value);
+ if (avalue_size < 0)
+ return (NULL);
+
+ /* make sure that we've enough space for result string */
+ bufsize = strlen(avalue)*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,
+ right_prec);
+ *--bufend = decimal_point;
+ avalue_size -= (right_prec + 1);
+ }
+
+ if ((*flags & NEED_GROUPING) &&
+ thousands_sep != '\0' && /* XXX: need investigation */
+ *grouping != CHAR_MAX &&
+ *grouping > 0) {
+ while (avalue_size > (int)*grouping) {
+ GRPCPY(*grouping);
+ GRPSEP;
+ grouping++;
+
+ /* no more grouping ? */
+ if (*grouping == CHAR_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, 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, padded);
+ }
+
+ bufsize = bufsize - (bufend - rslt) + 1;
+ memmove(rslt, bufend, bufsize);
+ free(avalue);
+ return (rslt);
+}
+
+ssize_t
+strfmon(char * __restrict s, size_t maxsize, const char * __restrict format,
+ ...)
+{
+ ssize_t ret;
+ va_list ap;
+
+ va_start(ap, format);
+ ret = _strfmon(s, maxsize, __current_locale(), format, ap);
+ va_end(ap);
+ return ret;
+}
+
+ssize_t
+strfmon_l(char * __restrict s, size_t maxsize, locale_t loc,
+ const char * __restrict format, ...)
+{
+ ssize_t ret;
+ va_list ap;
+
+ NORMALIZE_LOCALE(loc);
+ va_start(ap, format);
+ ret = _strfmon(s, maxsize, loc, format, ap);
+ va_end(ap);
+ return ret;
+}
projects / apple / libc.git / blobdiff