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glibc  2.9
Defines | Functions
era.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_WORD(item)   (current->values[_NL_ITEM_INDEX (item)].word)
#define ERA_DATE_CMP(a, b)

Functions

 __libc_rwlock_define (extern, __libc_setlocale_lock attribute_hidden) static void internal_function _nl_init_era_entries(struct locale_data *current)
struct era_entry *internal_function _nl_get_era_entry (const struct tm *tp, struct locale_data *current)
struct era_entry *internal_function _nl_select_era_entry (int cnt, struct locale_data *current)

Define Documentation

#define CURRENT (   item)    (current->values[_NL_ITEM_INDEX (item)].string)
#define CURRENT_WORD (   item)    (current->values[_NL_ITEM_INDEX (item)].word)
#define ERA_DATE_CMP (   a,
  b 
)
Value:
(a[0] < b[0] || (a[0] == b[0] && (a[1] < b[1]                               \
                                || (a[1] == b[1] && a[2] <= b[2]))))

Function Documentation

__libc_rwlock_define ( extern  ,
__libc_setlocale_lock  attribute_hidden 
)

Definition at line 27 of file era.c.

{
  size_t cnt;
  struct lc_time_data *data;

  /* Avoid touching CURRENT if there is no data at all, for _nl_C_LC_TIME.  */
  if (CURRENT_WORD (_NL_TIME_ERA_NUM_ENTRIES) == 0)
    return;

  __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->era_initialized)
    {
      size_t new_num_eras = CURRENT_WORD (_NL_TIME_ERA_NUM_ENTRIES);
      if (new_num_eras == 0)
       {
         if (data->eras != NULL)
           {
             free (data->eras);
             data->eras = NULL;
           }
       }
      else
       {
         struct era_entry *new_eras = data->eras;

         if (data->num_eras != new_num_eras)
           new_eras =
             (struct era_entry *) realloc (data->eras,
                                       new_num_eras
                                       * sizeof (struct era_entry));
         if (new_eras == NULL)
           {
             free (data->eras);
             data->num_eras = 0;
             data->eras = NULL;
           }
          else
           {
             const char *ptr = CURRENT (_NL_TIME_ERA_ENTRIES);
             data->num_eras = new_num_eras;
             data->eras = new_eras;

             for (cnt = 0; cnt < new_num_eras; ++cnt)
              {
                const char *base_ptr = ptr;
                memcpy ((void *) (new_eras + cnt), (const void *) ptr,
                       sizeof (uint32_t) * 8);

                if (ERA_DATE_CMP(new_eras[cnt].start_date,
                               new_eras[cnt].stop_date))
                  if (new_eras[cnt].direction == (uint32_t) '+')
                    new_eras[cnt].absolute_direction = 1;
                  else
                    new_eras[cnt].absolute_direction = -1;
                else
                  if (new_eras[cnt].direction == (uint32_t) '+')
                    new_eras[cnt].absolute_direction = -1;
                  else
                    new_eras[cnt].absolute_direction = 1;

                /* Skip numeric values.  */
                ptr += sizeof (uint32_t) * 8;

                /* Set and skip era name.  */
                new_eras[cnt].era_name = ptr;
                ptr = strchr (ptr, '\0') + 1;

                /* Set and skip era format.  */
                new_eras[cnt].era_format = ptr;
                ptr = strchr (ptr, '\0') + 1;

                ptr += 3 - (((ptr - (const char *) base_ptr) + 3) & 3);

                /* Set and skip wide era name.  */
                new_eras[cnt].era_wname = (wchar_t *) ptr;
                ptr = (char *) (wcschr ((wchar_t *) ptr, L'\0') + 1);

                /* Set and skip wide era format.  */
                new_eras[cnt].era_wformat = (wchar_t *) ptr;
                ptr = (char *) (wcschr ((wchar_t *) ptr, L'\0') + 1);
              }
           }
       }

      data->era_initialized = 1;
    }

 out:
  __libc_rwlock_unlock (__libc_setlocale_lock);
}

Here is the call graph for this function:

struct era_entry* internal_function _nl_get_era_entry ( const struct tm tp,
struct locale_data current 
) [read]

Definition at line 143 of file era.c.

{
  if (current->private.time == NULL || !current->private.time->era_initialized)
    _nl_init_era_entries (current);

  if (current->private.time != NULL)
    {
      /* Now compare date with the available eras.  */
      const int32_t tdate[3] = { tp->tm_year, tp->tm_mon, tp->tm_mday };
      size_t cnt;
      for (cnt = 0; cnt < current->private.time->num_eras; ++cnt)
       if ((ERA_DATE_CMP (current->private.time->eras[cnt].start_date, tdate)
            && ERA_DATE_CMP (tdate,
                           current->private.time->eras[cnt].stop_date))
           || (ERA_DATE_CMP (current->private.time->eras[cnt].stop_date,
                           tdate)
              && ERA_DATE_CMP (tdate,
                             current->private.time->eras[cnt].start_date)))
         return &current->private.time->eras[cnt];
    }

  return NULL;
}
struct era_entry* internal_function _nl_select_era_entry ( int  cnt,
struct locale_data current 
) [read]

Definition at line 170 of file era.c.

{
  if (current->private.time == NULL || !current->private.time->era_initialized)
    _nl_init_era_entries (current);

  return (current->private.time == NULL
         ? NULL : &current->private.time->eras[cnt]);
}