| 1 | /*
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| 2 | * Copyright (C) 2010 Robert Ancell.
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| 3 | * Author: Robert Ancell <[email protected]>
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| 4 | *
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| 5 | * This library is free software; you can redistribute it and/or modify it under
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| 6 | * the terms of the GNU Lesser General Public License as published by the Free
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| 7 | * Software Foundation; either version 2 or version 3 of the License.
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| 8 | * See http://www.gnu.org/copyleft/lgpl.html the full text of the license.
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| 9 | */
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| 10 |
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| 11 | #include <string.h>
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| 12 | #include <locale.h>
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| 13 | #include <langinfo.h>
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| 14 | #include <stdio.h>
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| 15 | #include <glib/gi18n.h>
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| 16 |
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| 17 | #include "lightdm/language.h"
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| 18 |
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| 19 | enum {
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| 20 | PROP_0,
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| 21 | PROP_CODE,
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| 22 | PROP_NAME,
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| 23 | PROP_TERRITORY
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| 24 | };
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| 25 |
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| 26 | typedef struct
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| 27 | {
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| 28 | gchar *code;
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| 29 | gchar *name;
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| 30 | gchar *territory;
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| 31 | } LightDMLanguagePrivate;
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| 32 |
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| 33 | G_DEFINE_TYPE (LightDMLanguage, lightdm_language, G_TYPE_OBJECT);
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| 34 |
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| 35 | #define GET_PRIVATE(obj) G_TYPE_INSTANCE_GET_PRIVATE ((obj), LIGHTDM_TYPE_LANGUAGE, LightDMLanguagePrivate)
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| 36 |
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| 37 | static gboolean have_languages = FALSE;
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| 38 | static GList *languages = NULL;
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| 39 |
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| 40 | static void
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| 41 | update_languages (void)
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| 42 | {
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| 43 | gchar *command = "locale -a";
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| 44 | gchar *stdout_text = NULL, *stderr_text = NULL;
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| 45 | gint exit_status;
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| 46 | gboolean result;
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| 47 | GError *error = NULL;
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| 48 |
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| 49 | if (have_languages)
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| 50 | return;
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| 51 |
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| 52 | result = g_spawn_command_line_sync (command, &stdout_text, &stderr_text, &exit_status, &error);
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| 53 | if (error)
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| 54 | {
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| 55 | g_warning ("Failed to run '%s': %s", command, error->message);
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| 56 | g_clear_error (&error);
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| 57 | }
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| 58 | else if (exit_status != 0)
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| 59 | g_warning ("Failed to get languages, '%s' returned %d", command, exit_status);
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| 60 | else if (result)
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| 61 | {
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| 62 | gchar **tokens;
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| 63 | int i;
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| 64 |
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| 65 | tokens = g_strsplit_set (stdout_text, "\n\r", -1);
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| 66 | for (i = 0; tokens[i]; i++)
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| 67 | {
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| 68 | LightDMLanguage *language;
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| 69 | gchar *code;
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| 70 |
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| 71 | code = g_strchug (tokens[i]);
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| 72 | if (code[0] == '\0')
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| 73 | continue;
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| 74 |
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| 75 | /* Ignore the non-interesting languages */
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| 76 | if (strcmp (command, "locale -a") == 0 && !g_strrstr (code, ".utf8"))
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| 77 | continue;
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| 78 |
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| 79 | language = g_object_new (LIGHTDM_TYPE_LANGUAGE, "code", code, NULL);
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| 80 | languages = g_list_append (languages, language);
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| 81 | }
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| 82 |
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| 83 | g_strfreev (tokens);
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| 84 | }
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| 85 |
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| 86 | g_free (stdout_text);
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| 87 | g_free (stderr_text);
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| 88 |
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| 89 | have_languages = TRUE;
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| 90 | }
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| 91 |
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| 92 | static gboolean
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| 93 | is_utf8 (const gchar *code)
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| 94 | {
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| 95 | return g_strrstr (code, ".utf8") || g_strrstr (code, ".UTF-8");
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| 96 | }
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| 97 |
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| 98 | /* Get a valid locale name that can be passed to setlocale(), so we always can use nl_langinfo() to get language and country names. */
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| 99 | static gchar *
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| 100 | get_locale_name (const gchar *code)
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| 101 | {
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| 102 | gchar *locale = NULL, *language;
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| 103 | char *at;
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| 104 | static gchar **avail_locales;
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| 105 | gint i;
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| 106 |
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| 107 | if (is_utf8 (code))
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| 108 | return (gchar *) code;
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| 109 |
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| 110 | if ((at = strchr (code, '@')))
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| 111 | language = g_strndup (code, at - code);
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| 112 | else
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| 113 | language = g_strdup (code);
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| 114 |
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| 115 | if (!avail_locales)
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| 116 | {
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| 117 | gchar *locales;
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| 118 | GError *error = NULL;
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| 119 |
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| 120 | if (g_spawn_command_line_sync ("locale -a", &locales, NULL, NULL, &error))
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| 121 | {
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| 122 | avail_locales = g_strsplit (g_strchomp (locales), "\n", -1);
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| 123 | g_free (locales);
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| 124 | }
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| 125 | else
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| 126 | {
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| 127 | g_warning ("Failed to run 'locale -a': %s", error->message);
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| 128 | g_clear_error (&error);
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| 129 | }
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| 130 | }
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| 131 |
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| 132 | if (avail_locales)
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| 133 | {
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| 134 | for (i = 0; avail_locales[i]; i++)
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| 135 | {
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| 136 | gchar *loc = avail_locales[i];
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| 137 | if (!g_strrstr (loc, ".utf8"))
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| 138 | continue;
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| 139 | if (g_str_has_prefix (loc, language))
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| 140 | {
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| 141 | locale = g_strdup (loc);
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| 142 | break;
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| 143 | }
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| 144 | }
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| 145 | }
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| 146 |
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| 147 | g_free (language);
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| 148 |
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| 149 | return locale;
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| 150 | }
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| 151 |
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| 152 | /**
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| 153 | * lightdm_get_language:
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| 154 | *
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| 155 | * Get the current language.
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| 156 | *
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| 157 | * Return value: (transfer none): The current language or #NULL if no language.
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| 158 | **/
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| 159 | LightDMLanguage *
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| 160 | lightdm_get_language (void)
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| 161 | {
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| 162 | const gchar *lang;
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| 163 | GList *link;
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| 164 |
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| 165 | lang = g_getenv ("LANG");
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| 166 | if (!lang)
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| 167 | return NULL;
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| 168 |
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| 169 | for (link = lightdm_get_languages (); link; link = link->next)
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| 170 | {
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| 171 | LightDMLanguage *language = link->data;
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| 172 | if (lightdm_language_matches (language, lang))
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| 173 | return language;
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| 174 | }
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| 175 |
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| 176 | return NULL;
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| 177 | }
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| 178 |
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| 179 | /**
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| 180 | * lightdm_get_languages:
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| 181 | *
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| 182 | * Get a list of languages to present to the user.
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| 183 | *
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| 184 | * Return value: (element-type LightDMLanguage) (transfer none): A list of #LightDMLanguage that should be presented to the user.
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| 185 | **/
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| 186 | GList *
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| 187 | lightdm_get_languages (void)
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| 188 | {
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| 189 | update_languages ();
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| 190 | return languages;
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| 191 | }
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| 192 |
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| 193 | /**
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| 194 | * lightdm_language_get_code:
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| 195 | * @language: A #LightDMLanguage
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| 196 | *
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| 197 | * Get the code of a language.
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| 198 | *
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| 199 | * Return value: The code of the language
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| 200 | **/
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| 201 | const gchar *
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| 202 | lightdm_language_get_code (LightDMLanguage *language)
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| 203 | {
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| 204 | g_return_val_if_fail (LIGHTDM_IS_LANGUAGE (language), NULL);
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| 205 | return GET_PRIVATE (language)->code;
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| 206 | }
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| 207 |
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| 208 | /**
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| 209 | * lightdm_language_get_name:
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| 210 | * @language: A #LightDMLanguage
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| 211 | *
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| 212 | * Get the name of a language.
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| 213 | *
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| 214 | * Return value: The name of the language
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| 215 | **/
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| 216 | const gchar *
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| 217 | lightdm_language_get_name (LightDMLanguage *language)
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| 218 | {
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| 219 | LightDMLanguagePrivate *priv;
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| 220 |
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| 221 | g_return_val_if_fail (LIGHTDM_IS_LANGUAGE (language), NULL);
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| 222 |
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| 223 | priv = GET_PRIVATE (language);
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| 224 |
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| 225 | if (!priv->name)
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| 226 | {
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| 227 | gchar *locale = get_locale_name (priv->code);
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| 228 | if (locale)
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| 229 | {
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| 230 | gchar *current = setlocale (LC_ALL, NULL);
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| 231 | setlocale (LC_IDENTIFICATION, locale);
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| 232 | setlocale (LC_MESSAGES, "");
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| 233 |
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| 234 | gchar *language_en = nl_langinfo (_NL_IDENTIFICATION_LANGUAGE);
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| 235 | if (language_en && strlen (language_en) > 0)
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| 236 | priv->name = g_strdup (dgettext ("iso_639_3", language_en));
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| 237 |
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| 238 | setlocale (LC_ALL, current);
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| 239 | }
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| 240 | if (!priv->name)
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| 241 | {
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| 242 | gchar **tokens = g_strsplit_set (priv->code, "_.@", 2);
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| 243 | priv->name = g_strdup (tokens[0]);
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| 244 | g_strfreev (tokens);
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| 245 | }
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| 246 | }
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| 247 |
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| 248 | return priv->name;
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| 249 | }
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| 250 |
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| 251 | /**
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| 252 | * lightdm_language_get_territory:
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| 253 | * @language: A #LightDMLanguage
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| 254 | *
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| 255 | * Get the territory the language is used in.
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| 256 | *
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| 257 | * Return value: The territory the language is used in.
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| 258 | **/
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| 259 | const gchar *
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| 260 | lightdm_language_get_territory (LightDMLanguage *language)
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| 261 | {
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| 262 | LightDMLanguagePrivate *priv;
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| 263 |
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| 264 | g_return_val_if_fail (LIGHTDM_IS_LANGUAGE (language), NULL);
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| 265 |
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| 266 | priv = GET_PRIVATE (language);
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| 267 |
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| 268 | if (!priv->territory && strchr (priv->code, '_'))
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| 269 | {
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| 270 | gchar *locale = get_locale_name (priv->code);
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| 271 | if (locale)
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| 272 | {
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| 273 | gchar *current = setlocale (LC_ALL, NULL);
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| 274 | setlocale (LC_IDENTIFICATION, locale);
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| 275 | setlocale (LC_MESSAGES, "");
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| 276 |
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| 277 | gchar *country_en = nl_langinfo (_NL_IDENTIFICATION_TERRITORY);
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| 278 | if (country_en && strlen (country_en) > 0 && g_strcmp0 (country_en, "ISO") != 0)
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| 279 | priv->territory = g_strdup (dgettext ("iso_3166", country_en));
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| 280 |
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| 281 | setlocale (LC_ALL, current);
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| 282 | }
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| 283 | if (!priv->territory)
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| 284 | {
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| 285 | gchar **tokens = g_strsplit_set (priv->code, "_.@", 3);
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| 286 | priv->territory = g_strdup (tokens[1]);
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| 287 | g_strfreev (tokens);
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| 288 | }
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| 289 | }
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| 290 |
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| 291 | return priv->territory;
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| 292 | }
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| 293 |
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| 294 | /**
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| 295 | * lightdm_language_matches:
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| 296 | * @language: A #LightDMLanguage
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| 297 | * @code: A language code
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| 298 | *
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| 299 | * Check if a language code matches this language.
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| 300 | *
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| 301 | * Return value: #TRUE if the code matches this language.
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| 302 | **/
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| 303 | gboolean
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| 304 | lightdm_language_matches (LightDMLanguage *language, const gchar *code)
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| 305 | {
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| 306 | LightDMLanguagePrivate *priv;
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| 307 |
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| 308 | g_return_val_if_fail (LIGHTDM_IS_LANGUAGE (language), FALSE);
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| 309 | g_return_val_if_fail (code != NULL, FALSE);
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| 310 |
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| 311 | priv = GET_PRIVATE (language);
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| 312 |
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| 313 | /* Handle the fact the UTF-8 is specified both as '.utf8' and '.UTF-8' */
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| 314 | if (is_utf8 (priv->code) && is_utf8 (code))
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| 315 | {
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| 316 | /* Match the characters before the '.' */
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| 317 | int i;
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| 318 | for (i = 0; priv->code[i] && code[i] && priv->code[i] == code[i] && code[i] != '.' ; i++);
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| 319 | return priv->code[i] == '.' && code[i] == '.';
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| 320 | }
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| 321 |
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| 322 | return g_str_equal (priv->code, code);
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| 323 | }
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| 324 |
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| 325 | static void
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| 326 | lightdm_language_init (LightDMLanguage *language)
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| 327 | {
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| 328 | }
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| 329 |
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| 330 | static void
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| 331 | lightdm_language_set_property (GObject *object,
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| 332 | guint prop_id,
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| 333 | const GValue *value,
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| 334 | GParamSpec *pspec)
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| 335 | {
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| 336 | LightDMLanguage *self = LIGHTDM_LANGUAGE (object);
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| 337 | LightDMLanguagePrivate *priv = GET_PRIVATE (self);
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| 338 |
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| 339 | switch (prop_id) {
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| 340 | case PROP_CODE:
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| 341 | g_free (priv->name);
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| 342 | priv->code = g_strdup (g_value_get_string (value));
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| 343 | break;
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| 344 | default:
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| 345 | G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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| 346 | break;
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| 347 | }
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| 348 | }
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| 349 |
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| 350 | static void
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| 351 | lightdm_language_get_property (GObject *object,
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| 352 | guint prop_id,
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| 353 | GValue *value,
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| 354 | GParamSpec *pspec)
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| 355 | {
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| 356 | LightDMLanguage *self;
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| 357 |
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| 358 | self = LIGHTDM_LANGUAGE (object);
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| 359 |
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| 360 | switch (prop_id) {
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| 361 | case PROP_CODE:
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| 362 | g_value_set_string (value, lightdm_language_get_code (self));
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| 363 | break;
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| 364 | case PROP_NAME:
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| 365 | g_value_set_string (value, lightdm_language_get_name (self));
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| 366 | break;
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| 367 | case PROP_TERRITORY:
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| 368 | g_value_set_string (value, lightdm_language_get_territory (self));
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| 369 | break;
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| 370 | default:
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| 371 | G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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| 372 | break;
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| 373 | }
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| 374 | }
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| 375 |
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| 376 | static void
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| 377 | lightdm_language_class_init (LightDMLanguageClass *klass)
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| 378 | {
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| 379 | GObjectClass *object_class = G_OBJECT_CLASS (klass);
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| 380 |
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| 381 | g_type_class_add_private (klass, sizeof (LightDMLanguagePrivate));
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| 382 |
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| 383 | object_class->set_property = lightdm_language_set_property;
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| 384 | object_class->get_property = lightdm_language_get_property;
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| 385 |
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| 386 | g_object_class_install_property (object_class,
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| 387 | PROP_CODE,
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| 388 | g_param_spec_string ("code",
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| 389 | "code",
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| 390 | "Language code",
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| 391 | NULL,
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| 392 | G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
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| 393 | g_object_class_install_property (object_class,
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| 394 | PROP_NAME,
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| 395 | g_param_spec_string ("name",
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| 396 | "name",
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| 397 | "Name of the language",
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| 398 | NULL,
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| 399 | G_PARAM_READABLE));
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| 400 | g_object_class_install_property (object_class,
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| 401 | PROP_TERRITORY,
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| 402 | g_param_spec_string ("territory",
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| 403 | "territory",
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| 404 | "Territory the language is from",
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| 405 | NULL,
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| 406 | G_PARAM_READABLE));
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| 407 | }
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