aboutsummaryrefslogtreecommitdiff
path: root/intl/explodename.c
blob: bb7755b2d3dcab59e12598a64b09fdd6f4770a4d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
/* Copyright (C) 1995-2019 Free Software Foundation, Inc.
   Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.

   This program 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.

   This program 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 this program.  If not, see <https://www.gnu.org/licenses/>.  */

#ifdef HAVE_CONFIG_H
# include <config.h>
#endif

#include <stdlib.h>
#include <string.h>
#include <sys/types.h>

#include "loadinfo.h"

/* On some strange systems still no definition of NULL is found.  Sigh!  */
#ifndef NULL
# if defined __STDC__ && __STDC__
#  define NULL ((void *) 0)
# else
#  define NULL 0
# endif
#endif

/* @@ end of prolog @@ */

/* Split a locale name NAME into a leading language part and all the
   rest.  Return a pointer to the first character after the language,
   i.e. to the first byte of the rest.  */
static char *_nl_find_language (const char *name);

static char *
_nl_find_language (const char *name)
{
  while (name[0] != '\0' && name[0] != '_' && name[0] != '@' && name[0] != '.')
    ++name;

  return (char *) name;
}


int
_nl_explode_name (char *name,
		  const char **language, const char **modifier,
		  const char **territory, const char **codeset,
		  const char **normalized_codeset)
{
  char *cp;
  int mask;

  *modifier = NULL;
  *territory = NULL;
  *codeset = NULL;
  *normalized_codeset = NULL;

  /* Now we determine the single parts of the locale name.  First
     look for the language.  Termination symbols are `_', '.', and `@'.  */
  mask = 0;
  *language = cp = name;
  cp = _nl_find_language (*language);

  if (*language == cp)
    /* This does not make sense: language has to be specified.  Use
       this entry as it is without exploding.  Perhaps it is an alias.  */
    cp = strchr (*language, '\0');
  else
    {
      if (cp[0] == '_')
	{
	  /* Next is the territory.  */
	  cp[0] = '\0';
	  *territory = ++cp;

	  while (cp[0] != '\0' && cp[0] != '.' && cp[0] != '@')
	    ++cp;

	  mask |= XPG_TERRITORY;
	}

      if (cp[0] == '.')
	{
	  /* Next is the codeset.  */
	  cp[0] = '\0';
	  *codeset = ++cp;

	  while (cp[0] != '\0' && cp[0] != '@')
	    ++cp;

	  mask |= XPG_CODESET;

	  if (*codeset != cp && (*codeset)[0] != '\0')
	    {
	      *normalized_codeset = _nl_normalize_codeset (*codeset,
							   cp - *codeset);
	      if (*normalized_codeset == NULL)
		return -1;
	      else if (strcmp (*codeset, *normalized_codeset) == 0)
		free ((char *) *normalized_codeset);
	      else
		mask |= XPG_NORM_CODESET;
	    }
	}
    }

  if (cp[0] == '@')
    {
      /* Next is the modifier.  */
      cp[0] = '\0';
      *modifier = ++cp;

      if (cp[0] != '\0')
	mask |= XPG_MODIFIER;
    }

  if (*territory != NULL && (*territory)[0] == '\0')
    mask &= ~XPG_TERRITORY;

  if (*codeset != NULL && (*codeset)[0] == '\0')
    mask &= ~XPG_CODESET;

  return mask;
}