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-rw-r--r--stdlib/strfmon_l.c636
1 files changed, 633 insertions, 3 deletions
diff --git a/stdlib/strfmon_l.c b/stdlib/strfmon_l.c
index b0c82a337e..90076afc45 100644
--- a/stdlib/strfmon_l.c
+++ b/stdlib/strfmon_l.c
@@ -1,5 +1,5 @@
 /* Formatting a monetary value according to the given locale.
-   Copyright (C) 1996, 1997, 2002 Free Software Foundation, Inc.
+   Copyright (C) 1996, 1997, 2002, 2004 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
 
@@ -18,7 +18,637 @@
    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    02111-1307 USA.  */
 
-#define USE_IN_EXTENDED_LOCALE_MODEL	1
-#include <strfmon.c>
+#include <ctype.h>
+#include <errno.h>
+#include <langinfo.h>
+#include <locale.h>
+#include <monetary.h>
+#ifdef USE_IN_LIBIO
+# include "../libio/libioP.h"
+# include "../libio/strfile.h"
+#endif
+#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];
+#ifdef USE_IN_LIBIO
+  _IO_strfile f;
+# ifdef _IO_MTSAFE_IO
+  _IO_lock_t lock;
+# endif
+#else
+  FILE f;
+#endif
+  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;
+      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))
+	    {
+	      width *= 10;
+	      width += to_digit (*fmt);
+	    }
+
+	  /* If we don't have enough room for the demanded width we
+	     can stop now and return an error.  */
+	  if (dest + width >= s + maxsize)
+	    {
+	      __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;
+	  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 (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 (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 USE_IN_LIBIO
+# ifdef _IO_MTSAFE_IO
+      f._sbf._f._lock = &lock;
+# endif
+      INTUSE(_IO_init) ((_IO_FILE *) &f, 0);
+      _IO_JUMPS ((struct _IO_FILE_plus *) &f) = &_IO_str_jumps;
+      INTUSE(_IO_str_init_static) ((_IO_strfile *) &f, dest,
+				   (s + maxsize) - dest, dest);
+#else
+      memset ((void *) &f, 0, sizeof (f));
+      f.__magic = _IOMAGIC;
+      f.__mode.__write = 1;
+      /* The buffer size is one less than MAXLEN
+	 so we have space for the null terminator.  */
+      f.__bufp = f.__buffer = (char *) dest;
+      f.__bufsize = (s + maxsize) - dest;
+      f.__put_limit = f.__buffer + f.__bufsize;
+      f.__get_limit = f.__buffer;
+      /* After the buffer is full (MAXLEN characters have been written),
+	 any more characters written will go to the bit bucket.  */
+      f.__room_funcs = __default_room_functions;
+      f.__io_funcs.__write = NULL;
+      f.__seen = 1;
+#endif
+      /* We clear the last available byte so we can find out whether
+	 the numeric representation is too long.  */
+      s[maxsize - 1] = '\0';
+
+      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.is_short = 0;
+      info.is_long = 0;
+      info.alt = 0;
+      info.space = 0;
+      info.left = 0;
+      info.showsign = 0;
+      info.group = group;
+      info.pad = pad;
+      info.extra = 1;		/* This means use values from LC_MONETARY.  */
+      info.wide = 0;
+
+      ptr = &fpnum;
+      done = __printf_fp ((FILE *) &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
+	    {
+	      int dist = width - (dest - startp);
+	      char *cp;
+	      for (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;
+}
 weak_alias (__strfmon_l, strfmon_l)