Back to index

glibc  2.9
Defines | Functions
alt_digit.c File Reference
#include "../locale/localeinfo.h"
#include <bits/libc-lock.h>
#include <stdlib.h>
#include <wchar.h>
#include <string.h>

Go to the source code of this file.

Defines

#define CURRENT(item)   (current->values[_NL_ITEM_INDEX (item)].string)
#define CURRENT_WSTR(item)   ((wchar_t *) current->values[_NL_ITEM_INDEX (item)].wstr)

Functions

 __libc_rwlock_define (extern, __libc_setlocale_lock attribute_hidden) static void _nl_init_alt_digit(struct locale_data *current)
const char *internal_function _nl_get_alt_digit (unsigned int number, struct locale_data *current)
const wchar_t *internal_function _nl_get_walt_digit (unsigned int number, struct locale_data *current)
int internal_function _nl_parse_alt_digit (const char **strp, struct locale_data *current)

Define Documentation

#define CURRENT (   item)    (current->values[_NL_ITEM_INDEX (item)].string)
#define CURRENT_WSTR (   item)    ((wchar_t *) current->values[_NL_ITEM_INDEX (item)].wstr)

Function Documentation

__libc_rwlock_define ( extern  ,
__libc_setlocale_lock  attribute_hidden 
)

Definition at line 27 of file alt_digit.c.

{
  struct lc_time_data *data;

  if (current->private.time == NULL)
    {
      current->private.time = malloc (sizeof *current->private.time);
      if (current->private.time == NULL)
       return;
      memset (current->private.time, 0, sizeof *current->private.time);
      current->private.cleanup = &_nl_cleanup_time;
    }
  data = current->private.time;

  if (! data->alt_digits_initialized)
    {
      const char *ptr = CURRENT (ALT_DIGITS);
      size_t cnt;

      data->alt_digits_initialized = 1;

      if (ptr != NULL)
       {
         data->alt_digits = malloc (100 * sizeof (const char *));
         if (data->alt_digits != NULL)
           for (cnt = 0; cnt < 100; ++cnt)
             {
              data->alt_digits[cnt] = ptr;

              /* Skip digit format. */
              ptr = strchr (ptr, '\0') + 1;
             }
       }
    }

}

Here is the call graph for this function:

const char* internal_function _nl_get_alt_digit ( unsigned int  number,
struct locale_data current 
)

Definition at line 73 of file alt_digit.c.

{
  const char *result;

  if (number >= 100 || CURRENT (ALT_DIGITS)[0] == '\0')
    return NULL;

  __libc_rwlock_wrlock (__libc_setlocale_lock);

  if (current->private.time == NULL
      || ! current->private.time->alt_digits_initialized)
    _nl_init_alt_digit (current);

  result = ((current->private.time != NULL
            && current->private.time->alt_digits != NULL)
           ? current->private.time->alt_digits[number]
           : NULL);

  __libc_rwlock_unlock (__libc_setlocale_lock);

  return result;
}
const wchar_t* internal_function _nl_get_walt_digit ( unsigned int  number,
struct locale_data current 
)

Definition at line 99 of file alt_digit.c.

{
  const wchar_t *result = NULL;
  struct lc_time_data *data;

  if (number >= 100 || CURRENT_WSTR (_NL_WALT_DIGITS)[0] == L'\0')
    return NULL;

  __libc_rwlock_wrlock (__libc_setlocale_lock);

  if (current->private.time == NULL)
    {
      current->private.time = malloc (sizeof *current->private.time);
      if (current->private.time == NULL)
       goto out;
      memset (current->private.time, 0, sizeof *current->private.time);
      current->private.cleanup = &_nl_cleanup_time;
    }
  data = current->private.time;

  if (! data->walt_digits_initialized)
    {
      const wchar_t *ptr = CURRENT_WSTR (_NL_WALT_DIGITS);
      size_t cnt;

      data->walt_digits_initialized = 1;

      if (ptr != NULL)
       {
         data->walt_digits = malloc (100 * sizeof (const uint32_t *));
         if (data->walt_digits != NULL)
           for (cnt = 0; cnt < 100; ++cnt)
             {
              data->walt_digits[cnt] = ptr;

              /* Skip digit format. */
              ptr = wcschr (ptr, L'\0') + 1;
             }
       }
    }

  if (data->walt_digits != NULL)
    result = data->walt_digits[number];

 out:
  __libc_rwlock_unlock (__libc_setlocale_lock);

  return (wchar_t *) result;
}

Here is the call graph for this function:

int internal_function _nl_parse_alt_digit ( const char **  strp,
struct locale_data current 
)

Definition at line 152 of file alt_digit.c.

{
  const char *str = *strp;
  int result = -1;
  size_t cnt;
  size_t maxlen = 0;

  if (CURRENT_WSTR (_NL_WALT_DIGITS)[0] == L'\0')
    return result;

  __libc_rwlock_wrlock (__libc_setlocale_lock);

  if (current->private.time == NULL
      || ! current->private.time->alt_digits_initialized)
    _nl_init_alt_digit (current);

  if (current->private.time != NULL &&
      current->private.time->alt_digits != NULL)
    /* Matching is not unambiguous.  The alternative digits could be like
       I, II, III, ... and the first one is a substring of the second
       and third.  Therefore we must keep on searching until we found
       the longest possible match.  Note that this is not specified in
       the standard.  */
    for (cnt = 0; cnt < 100; ++cnt)
      {
       const char *const dig = current->private.time->alt_digits[cnt];
       size_t len = strlen (dig);

       if (len > maxlen && strncmp (dig, str, len) == 0)
         {
           maxlen = len;
           result = (int) cnt;
         }
      }

  __libc_rwlock_unlock (__libc_setlocale_lock);

  if (result != -1)
    *strp += maxlen;

  return result;
}

Here is the call graph for this function: