| /* Formatting a monetary value according to the given locale. |
| Copyright (C) 1996,1997,2002,2004,2006,2009 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, write to the Free |
| Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. */ |
| |
| #include <ctype.h> |
| #include <errno.h> |
| #include <langinfo.h> |
| #include <locale.h> |
| #include <monetary.h> |
| #include "../libio/libioP.h" |
| #include "../libio/strfile.h" |
| #include <printf.h> |
| #include <stdarg.h> |
| #include <stdio.h> |
| #include <string.h> |
| #include "../locale/localeinfo.h" |
| |
| |
| #define out_char(Ch) \ |
| do { \ |
| if (dest >= s + maxsize - 1) \ |
| { \ |
| __set_errno (E2BIG); \ |
| va_end (ap); \ |
| return -1; \ |
| } \ |
| *dest++ = (Ch); \ |
| } while (0) |
| |
| #define out_string(String) \ |
| do { \ |
| const char *_s = (String); \ |
| while (*_s) \ |
| out_char (*_s++); \ |
| } while (0) |
| |
| #define out_nstring(String, N) \ |
| do { \ |
| int _n = (N); \ |
| const char *_s = (String); \ |
| while (_n-- > 0) \ |
| out_char (*_s++); \ |
| } while (0) |
| |
| #define to_digit(Ch) ((Ch) - '0') |
| |
| |
| /* We use this code also for the extended locale handling where the |
| function gets as an additional argument the locale which has to be |
| used. To access the values we have to redefine the _NL_CURRENT |
| macro. */ |
| #undef _NL_CURRENT |
| #define _NL_CURRENT(category, item) \ |
| (current->values[_NL_ITEM_INDEX (item)].string) |
| |
| extern int __printf_fp (FILE *, const struct printf_info *, |
| const void *const *); |
| libc_hidden_proto (__printf_fp) |
| /* This function determines the number of digit groups in the output. |
| The definition is in printf_fp.c. */ |
| extern unsigned int __guess_grouping (unsigned int intdig_max, |
| const char *grouping, wchar_t sepchar); |
| |
| |
| /* We have to overcome some problems with this implementation. On the |
| one hand the strfmon() function is specified in XPG4 and of course |
| it has to follow this. But on the other hand POSIX.2 specifies |
| some information in the LC_MONETARY category which should be used, |
| too. Some of the information contradicts the information which can |
| be specified in format string. */ |
| ssize_t |
| __vstrfmon_l (char *s, size_t maxsize, __locale_t loc, const char *format, |
| va_list ap) |
| { |
| struct locale_data *current = loc->__locales[LC_MONETARY]; |
| _IO_strfile f; |
| struct printf_info info; |
| char *dest; /* Pointer so copy the output. */ |
| const char *fmt; /* Pointer that walks through format. */ |
| |
| dest = s; |
| fmt = format; |
| |
| /* Loop through the format-string. */ |
| while (*fmt != '\0') |
| { |
| /* The floating-point value to output. */ |
| union |
| { |
| double dbl; |
| __long_double_t ldbl; |
| } |
| fpnum; |
| int int_format; |
| int print_curr_symbol; |
| int left_prec; |
| int left_pad; |
| int right_prec; |
| int group; |
| char pad; |
| int is_long_double; |
| int p_sign_posn; |
| int n_sign_posn; |
| int sign_posn; |
| int other_sign_posn; |
| int left; |
| int is_negative; |
| int sep_by_space; |
| int other_sep_by_space; |
| int cs_precedes; |
| int other_cs_precedes; |
| const char *sign_string; |
| const char *other_sign_string; |
| int done; |
| const char *currency_symbol; |
| size_t currency_symbol_len; |
| long int width; |
| char *startp; |
| const void *ptr; |
| char space_char; |
| |
| /* Process all character which do not introduce a format |
| specification. */ |
| if (*fmt != '%') |
| { |
| out_char (*fmt++); |
| continue; |
| } |
| |
| /* "%%" means a single '%' character. */ |
| if (fmt[1] == '%') |
| { |
| out_char (*++fmt); |
| ++fmt; |
| continue; |
| } |
| |
| /* Defaults for formatting. */ |
| int_format = 0; /* Use international curr. symbol */ |
| print_curr_symbol = 1; /* Print the currency symbol. */ |
| left_prec = -1; /* No left precision specified. */ |
| right_prec = -1; /* No right precision specified. */ |
| group = 1; /* Print digits grouped. */ |
| pad = ' '; /* Fill character is <SP>. */ |
| is_long_double = 0; /* Double argument by default. */ |
| p_sign_posn = -1; /* This indicates whether the */ |
| n_sign_posn = -1; /* '(' flag is given. */ |
| width = -1; /* No width specified so far. */ |
| left = 0; /* Right justified by default. */ |
| |
| /* Parse group characters. */ |
| while (1) |
| { |
| switch (*++fmt) |
| { |
| case '=': /* Set fill character. */ |
| pad = *++fmt; |
| if (pad == '\0') |
| { |
| /* Premature EOS. */ |
| __set_errno (EINVAL); |
| return -1; |
| } |
| continue; |
| case '^': /* Don't group digits. */ |
| group = 0; |
| continue; |
| case '+': /* Use +/- for sign of number. */ |
| if (n_sign_posn != -1) |
| { |
| __set_errno (EINVAL); |
| return -1; |
| } |
| p_sign_posn = *_NL_CURRENT (LC_MONETARY, P_SIGN_POSN); |
| n_sign_posn = *_NL_CURRENT (LC_MONETARY, N_SIGN_POSN); |
| continue; |
| case '(': /* Use ( ) for negative sign. */ |
| if (n_sign_posn != -1) |
| { |
| __set_errno (EINVAL); |
| return -1; |
| } |
| p_sign_posn = 0; |
| n_sign_posn = 0; |
| continue; |
| case '!': /* Don't print the currency symbol. */ |
| print_curr_symbol = 0; |
| continue; |
| case '-': /* Print left justified. */ |
| left = 1; |
| continue; |
| default: |
| /* Will stop the loop. */; |
| } |
| break; |
| } |
| |
| if (isdigit (*fmt)) |
| { |
| /* Parse field width. */ |
| width = to_digit (*fmt); |
| |
| while (isdigit (*++fmt)) |
| { |
| int val = to_digit (*fmt); |
| |
| if (width > LONG_MAX / 10 |
| || (width == LONG_MAX && val > LONG_MAX % 10)) |
| { |
| __set_errno (E2BIG); |
| return -1; |
| } |
| |
| width = width * 10 + val; |
| } |
| |
| /* If we don't have enough room for the demanded width we |
| can stop now and return an error. */ |
| if (width >= maxsize - (dest - s)) |
| { |
| __set_errno (E2BIG); |
| return -1; |
| } |
| } |
| |
| /* Recognize left precision. */ |
| if (*fmt == '#') |
| { |
| if (!isdigit (*++fmt)) |
| { |
| __set_errno (EINVAL); |
| return -1; |
| } |
| left_prec = to_digit (*fmt); |
| |
| while (isdigit (*++fmt)) |
| { |
| left_prec *= 10; |
| left_prec += to_digit (*fmt); |
| } |
| } |
| |
| /* Recognize right precision. */ |
| if (*fmt == '.') |
| { |
| if (!isdigit (*++fmt)) |
| { |
| __set_errno (EINVAL); |
| return -1; |
| } |
| right_prec = to_digit (*fmt); |
| |
| while (isdigit (*++fmt)) |
| { |
| right_prec *= 10; |
| right_prec += to_digit (*fmt); |
| } |
| } |
| |
| /* Handle modifier. This is an extension. */ |
| if (*fmt == 'L') |
| { |
| ++fmt; |
| if (!__ldbl_is_dbl) |
| is_long_double = 1; |
| } |
| |
| /* Handle format specifier. */ |
| char int_symbol[4]; |
| switch (*fmt++) |
| { |
| case 'i': { /* Use international currency symbol. */ |
| const char *int_curr_symbol; |
| |
| int_curr_symbol = _NL_CURRENT (LC_MONETARY, INT_CURR_SYMBOL); |
| strncpy(int_symbol, int_curr_symbol, 3); |
| int_symbol[3] = '\0'; |
| |
| currency_symbol_len = 3; |
| currency_symbol = &int_symbol[0]; |
| space_char = int_curr_symbol[3]; |
| int_format = 1; |
| break; |
| } |
| case 'n': /* Use national currency symbol. */ |
| currency_symbol = _NL_CURRENT (LC_MONETARY, CURRENCY_SYMBOL); |
| currency_symbol_len = strlen (currency_symbol); |
| space_char = ' '; |
| int_format = 0; |
| break; |
| default: /* Any unrecognized format is an error. */ |
| __set_errno (EINVAL); |
| return -1; |
| } |
| |
| /* If not specified by the format string now find the values for |
| the format specification. */ |
| if (p_sign_posn == -1) |
| p_sign_posn = *_NL_CURRENT (LC_MONETARY, int_format ? INT_P_SIGN_POSN : P_SIGN_POSN); |
| if (n_sign_posn == -1) |
| n_sign_posn = *_NL_CURRENT (LC_MONETARY, int_format ? INT_N_SIGN_POSN : N_SIGN_POSN); |
| |
| if (right_prec == -1) |
| { |
| right_prec = *_NL_CURRENT (LC_MONETARY, int_format ? INT_FRAC_DIGITS : FRAC_DIGITS); |
| |
| if (right_prec == CHAR_MAX) |
| right_prec = 2; |
| } |
| |
| /* If we have to print the digits grouped determine how many |
| extra characters this means. */ |
| if (group && left_prec != -1) |
| left_prec += __guess_grouping (left_prec, |
| _NL_CURRENT (LC_MONETARY, MON_GROUPING), |
| *_NL_CURRENT (LC_MONETARY, |
| MON_THOUSANDS_SEP)); |
| |
| /* Now it's time to get the value. */ |
| if (is_long_double == 1) |
| { |
| fpnum.ldbl = va_arg (ap, long double); |
| is_negative = fpnum.ldbl < 0; |
| if (is_negative) |
| fpnum.ldbl = -fpnum.ldbl; |
| } |
| else |
| { |
| fpnum.dbl = va_arg (ap, double); |
| is_negative = fpnum.dbl < 0; |
| if (is_negative) |
| fpnum.dbl = -fpnum.dbl; |
| } |
| |
| /* We now know the sign of the value and can determine the format. */ |
| if (is_negative) |
| { |
| sign_string = _NL_CURRENT (LC_MONETARY, NEGATIVE_SIGN); |
| /* If the locale does not specify a character for the |
| negative sign we use a '-'. */ |
| if (*sign_string == '\0') |
| sign_string = (const char *) "-"; |
| cs_precedes = *_NL_CURRENT (LC_MONETARY, int_format ? INT_N_CS_PRECEDES : N_CS_PRECEDES); |
| sep_by_space = *_NL_CURRENT (LC_MONETARY, int_format ? INT_N_SEP_BY_SPACE : N_SEP_BY_SPACE); |
| sign_posn = n_sign_posn; |
| |
| other_sign_string = _NL_CURRENT (LC_MONETARY, POSITIVE_SIGN); |
| other_cs_precedes = *_NL_CURRENT (LC_MONETARY, int_format ? INT_P_CS_PRECEDES : P_CS_PRECEDES); |
| other_sep_by_space = *_NL_CURRENT (LC_MONETARY, int_format ? INT_P_SEP_BY_SPACE : P_SEP_BY_SPACE); |
| other_sign_posn = p_sign_posn; |
| } |
| else |
| { |
| sign_string = _NL_CURRENT (LC_MONETARY, POSITIVE_SIGN); |
| cs_precedes = *_NL_CURRENT (LC_MONETARY, int_format ? INT_P_CS_PRECEDES : P_CS_PRECEDES); |
| sep_by_space = *_NL_CURRENT (LC_MONETARY, int_format ? INT_P_SEP_BY_SPACE : P_SEP_BY_SPACE); |
| sign_posn = p_sign_posn; |
| |
| other_sign_string = _NL_CURRENT (LC_MONETARY, NEGATIVE_SIGN); |
| if (*other_sign_string == '\0') |
| other_sign_string = (const char *) "-"; |
| other_cs_precedes = *_NL_CURRENT (LC_MONETARY, int_format ? INT_N_CS_PRECEDES : N_CS_PRECEDES); |
| other_sep_by_space = *_NL_CURRENT (LC_MONETARY, int_format ? INT_N_SEP_BY_SPACE : N_SEP_BY_SPACE); |
| other_sign_posn = n_sign_posn; |
| } |
| |
| /* Set default values for unspecified information. */ |
| if (cs_precedes != 0) |
| cs_precedes = 1; |
| if (other_cs_precedes != 0) |
| other_cs_precedes = 1; |
| if (sep_by_space == CHAR_MAX) |
| sep_by_space = 0; |
| if (other_sep_by_space == CHAR_MAX) |
| other_sep_by_space = 0; |
| if (sign_posn == CHAR_MAX) |
| sign_posn = 1; |
| if (other_sign_posn == CHAR_MAX) |
| other_sign_posn = 1; |
| |
| /* Check for degenerate cases */ |
| if (sep_by_space == 2) |
| { |
| if (sign_posn == 0 || |
| (sign_posn == 1 && !cs_precedes) || |
| (sign_posn == 2 && cs_precedes)) |
| /* sign and symbol are not adjacent, so no separator */ |
| sep_by_space = 0; |
| } |
| if (other_sep_by_space == 2) |
| { |
| if (other_sign_posn == 0 || |
| (other_sign_posn == 1 && !other_cs_precedes) || |
| (other_sign_posn == 2 && other_cs_precedes)) |
| /* sign and symbol are not adjacent, so no separator */ |
| other_sep_by_space = 0; |
| } |
| |
| /* Set the left precision and padding needed for alignment */ |
| if (left_prec == -1) |
| { |
| left_prec = 0; |
| left_pad = 0; |
| } |
| else |
| { |
| /* Set left_pad to number of spaces needed to align positive |
| and negative formats */ |
| |
| int left_bytes = 0; |
| int other_left_bytes = 0; |
| |
| /* Work out number of bytes for currency string and separator |
| preceding the value */ |
| if (cs_precedes) |
| { |
| left_bytes += currency_symbol_len; |
| if (sep_by_space != 0) |
| ++left_bytes; |
| } |
| |
| if (other_cs_precedes) |
| { |
| other_left_bytes += currency_symbol_len; |
| if (other_sep_by_space != 0) |
| ++other_left_bytes; |
| } |
| |
| /* Work out number of bytes for the sign (or left parenthesis) |
| preceding the value */ |
| if (sign_posn == 0 && is_negative) |
| ++left_bytes; |
| else if (sign_posn == 1) |
| left_bytes += strlen (sign_string); |
| else if (cs_precedes && (sign_posn == 3 || sign_posn == 4)) |
| left_bytes += strlen (sign_string); |
| |
| if (other_sign_posn == 0 && !is_negative) |
| ++other_left_bytes; |
| else if (other_sign_posn == 1) |
| other_left_bytes += strlen (other_sign_string); |
| else if (other_cs_precedes && |
| (other_sign_posn == 3 || other_sign_posn == 4)) |
| other_left_bytes += strlen (other_sign_string); |
| |
| /* Compare the number of bytes preceding the value for |
| each format, and set the padding accordingly */ |
| if (other_left_bytes > left_bytes) |
| left_pad = other_left_bytes - left_bytes; |
| else |
| left_pad = 0; |
| } |
| |
| /* Perhaps we'll someday make these things configurable so |
| better start using symbolic names now. */ |
| #define left_paren '(' |
| #define right_paren ')' |
| |
| startp = dest; /* Remember start so we can compute length. */ |
| |
| while (left_pad-- > 0) |
| out_char (' '); |
| |
| if (sign_posn == 0 && is_negative) |
| out_char (left_paren); |
| |
| if (cs_precedes) |
| { |
| if (sign_posn != 0 && sign_posn != 2 && sign_posn != 4 |
| && sign_posn != 5) |
| { |
| out_string (sign_string); |
| if (sep_by_space == 2) |
| out_char (' '); |
| } |
| |
| if (print_curr_symbol) |
| out_string (currency_symbol); |
| |
| if (sign_posn == 4) |
| { |
| if (print_curr_symbol && sep_by_space == 2) |
| out_char (space_char); |
| out_string (sign_string); |
| if (sep_by_space == 1) |
| /* POSIX.2 and SUS are not clear on this case, but C99 |
| says a space follows the adjacent-symbol-and-sign */ |
| out_char (' '); |
| } |
| else |
| if (print_curr_symbol && sep_by_space == 1) |
| out_char (space_char); |
| } |
| else |
| if (sign_posn != 0 && sign_posn != 2 && sign_posn != 3 |
| && sign_posn != 4 && sign_posn != 5) |
| out_string (sign_string); |
| |
| /* Print the number. */ |
| #ifdef _IO_MTSAFE_IO |
| f._sbf._f._lock = NULL; |
| #endif |
| INTUSE(_IO_init) (&f._sbf._f, 0); |
| _IO_JUMPS (&f._sbf) = &_IO_str_jumps; |
| INTUSE(_IO_str_init_static) (&f, dest, |
| (s + maxsize) - dest, dest); |
| /* We clear the last available byte so we can find out whether |
| the numeric representation is too long. */ |
| s[maxsize - 1] = '\0'; |
| |
| memset (&info, '\0', sizeof (info)); |
| info.prec = right_prec; |
| info.width = left_prec + (right_prec ? (right_prec + 1) : 0); |
| info.spec = 'f'; |
| info.is_long_double = is_long_double; |
| info.group = group; |
| info.pad = pad; |
| info.extra = 1; /* This means use values from LC_MONETARY. */ |
| |
| ptr = &fpnum; |
| done = __printf_fp (&f._sbf._f, &info, &ptr); |
| if (done < 0) |
| return -1; |
| |
| if (s[maxsize - 1] != '\0') |
| { |
| __set_errno (E2BIG); |
| return -1; |
| } |
| |
| dest += done; |
| |
| if (!cs_precedes) |
| { |
| if (sign_posn == 3) |
| { |
| if (sep_by_space == 1) |
| out_char (' '); |
| out_string (sign_string); |
| } |
| |
| if (print_curr_symbol) |
| { |
| if ((sign_posn == 3 && sep_by_space == 2) |
| || (sign_posn == 4 && sep_by_space == 1) |
| || (sign_posn == 2 && sep_by_space == 1) |
| || (sign_posn == 1 && sep_by_space == 1) |
| || (sign_posn == 0 && sep_by_space == 1)) |
| out_char (space_char); |
| out_nstring (currency_symbol, currency_symbol_len); |
| } |
| |
| if (sign_posn == 4) |
| { |
| if (sep_by_space == 2) |
| out_char (' '); |
| out_string (sign_string); |
| } |
| } |
| |
| if (sign_posn == 2) |
| { |
| if (sep_by_space == 2) |
| out_char (' '); |
| out_string (sign_string); |
| } |
| |
| if (sign_posn == 0 && is_negative) |
| out_char (right_paren); |
| |
| /* Now test whether the output width is filled. */ |
| if (dest - startp < width) |
| { |
| if (left) |
| /* We simply have to fill using spaces. */ |
| do |
| out_char (' '); |
| while (dest - startp < width); |
| else |
| { |
| long int dist = width - (dest - startp); |
| for (char *cp = dest - 1; cp >= startp; --cp) |
| cp[dist] = cp[0]; |
| |
| dest += dist; |
| |
| do |
| startp[--dist] = ' '; |
| while (dist > 0); |
| } |
| } |
| } |
| |
| /* Terminate the string. */ |
| *dest = '\0'; |
| |
| return dest - s; |
| } |
| |
| ssize_t |
| ___strfmon_l (char *s, size_t maxsize, __locale_t loc, const char *format, ...) |
| { |
| va_list ap; |
| |
| va_start (ap, format); |
| |
| ssize_t res = __vstrfmon_l (s, maxsize, loc, format, ap); |
| |
| va_end (ap); |
| |
| return res; |
| } |
| ldbl_strong_alias (___strfmon_l, __strfmon_l) |
| ldbl_weak_alias (___strfmon_l, strfmon_l) |