[gnome-software] Port GpkLanguage code for parsing /usr/share/xml/iso-codes/iso_639.xml

[Kalev Lember <klember src gnome org>]

commit 79b9b386550fb5a07998592a099981378c1ca02f
Author: Kalev Lember <kalevlember gmail com>
Date:   Mon May 18 12:52:09 2015 +0200

    Port GpkLanguage code for parsing /usr/share/xml/iso-codes/iso_639.xml
    
    No other changes besides simple search-and-replace Gpk -> Gs.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=749485

 src/Makefile.am   |    2 +
 src/gs-language.c |  196 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 src/gs-language.h |   60 ++++++++++++++++
 3 files changed, 258 insertions(+), 0 deletions(-)
---
diff --git a/src/Makefile.am b/src/Makefile.am
index e6be63e..8f00cd2 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -127,6 +127,8 @@ gnome_software_SOURCES =                            \
        gs-box.c                                        \
        gs-hiding-box.h                                 \
        gs-hiding-box.c                                 \
+       gs-language.c                                   \
+       gs-language.h                                   \
        gs-page.c                                       \
        gs-page.h                                       \
        gs-plugin.c                                     \
diff --git a/src/gs-language.c b/src/gs-language.c
new file mode 100644
index 0000000..76c5fbc
--- /dev/null
+++ b/src/gs-language.c
@@ -0,0 +1,196 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2008 Richard Hughes <richard hughsie com>
+ *
+ * Licensed under the GNU General Public License Version 2
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "config.h"
+
+#include <string.h>
+#include <glib.h>
+
+#include "gs-language.h"
+
+static void     gs_language_finalize   (GObject          *object);
+
+#define GS_LANGUAGE_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GS_TYPE_LANGUAGE, GsLanguagePrivate))
+
+struct GsLanguagePrivate
+{
+       GHashTable              *hash;
+};
+
+G_DEFINE_TYPE (GsLanguage, gs_language, G_TYPE_OBJECT)
+
+/**
+ * gs_language_parser_start_element:
+ **/
+static void
+gs_language_parser_start_element (GMarkupParseContext *context, const gchar *element_name,
+                                  const gchar **attribute_names, const gchar **attribute_values,
+                                  gpointer user_data, GError **error)
+{
+       guint i, len;
+       const gchar *code1 = NULL;
+       const gchar *code2b = NULL;
+       const gchar *name = NULL;
+       GsLanguage *language = user_data;
+
+       if (strcmp (element_name, "iso_639_entry") != 0)
+               return;
+
+       /* find data */
+       len = g_strv_length ((gchar**)attribute_names);
+       for (i=0; i<len; i++) {
+               if (strcmp (attribute_names[i], "iso_639_1_code") == 0)
+                       code1 = attribute_values[i];
+               if (strcmp (attribute_names[i], "iso_639_2B_code") == 0)
+                       code2b = attribute_values[i];
+               if (strcmp (attribute_names[i], "name") == 0)
+                       name = attribute_values[i];
+       }
+
+       /* not valid entry */
+       if (name == NULL)
+               return;
+
+       /* add both to hash */
+       if (code1 != NULL)
+               g_hash_table_insert (language->priv->hash, g_strdup (code1), g_strdup (name));
+       if (code2b != NULL)
+               g_hash_table_insert (language->priv->hash, g_strdup (code2b), g_strdup (name));
+}
+
+/* trivial parser */
+static const GMarkupParser gs_language_markup_parser =
+{
+       gs_language_parser_start_element,
+       NULL, /* end_element */
+       NULL, /* characters */
+       NULL, /* passthrough */
+       NULL /* error */
+};
+
+/**
+ * gs_language_populate:
+ *
+ * <iso_639_entry iso_639_2B_code="hun" iso_639_2T_code="hun" iso_639_1_code="hu" name="Hungarian" />
+ **/
+gboolean
+gs_language_populate (GsLanguage *language, GError **error)
+{
+       gboolean ret = FALSE;
+       gchar *contents = NULL;
+       gchar *filename;
+       gsize size;
+       GMarkupParseContext *context = NULL;
+
+       /* find filename */
+       filename = g_build_filename (DATADIR, "xml", "iso-codes", "iso_639.xml", NULL);
+       if (!g_file_test (filename, G_FILE_TEST_EXISTS)) {
+               g_free (filename);
+               filename = g_build_filename ("/usr", "share", "xml", "iso-codes", "iso_639.xml", NULL);
+       }
+       if (!g_file_test (filename, G_FILE_TEST_EXISTS)) {
+               g_set_error (error, 1, 0, "cannot find source file : '%s'", filename);
+               goto out;
+       }
+
+       /* get contents */
+       ret = g_file_get_contents (filename, &contents, &size, error);
+       if (!ret)
+               goto out;
+
+       /* create parser */
+       context = g_markup_parse_context_new (&gs_language_markup_parser, G_MARKUP_PREFIX_ERROR_POSITION, 
language, NULL);
+
+       /* parse data */
+       ret = g_markup_parse_context_parse (context, contents, (gssize) size, error);
+       if (!ret)
+               goto out;
+out:
+       if (context != NULL)
+               g_markup_parse_context_free (context);
+       g_free (filename);
+       g_free (contents);
+       return ret;
+}
+
+/**
+ * gs_language_iso639_to_language:
+ **/
+gchar *
+gs_language_iso639_to_language (GsLanguage *language, const gchar *iso639)
+{
+       return g_strdup (g_hash_table_lookup (language->priv->hash, iso639));
+}
+
+/**
+ * gs_language_finalize:
+ * @object: The object to finalize
+ **/
+static void
+gs_language_finalize (GObject *object)
+{
+       GsLanguage *language;
+
+       g_return_if_fail (GS_IS_LANGUAGE (object));
+
+       language = GS_LANGUAGE (object);
+
+       g_return_if_fail (language->priv != NULL);
+       g_hash_table_unref (language->priv->hash);
+
+       G_OBJECT_CLASS (gs_language_parent_class)->finalize (object);
+}
+
+/**
+ * gs_language_init:
+ * @language: This class instance
+ **/
+static void
+gs_language_init (GsLanguage *language)
+{
+       language->priv = GS_LANGUAGE_GET_PRIVATE (language);
+       language->priv->hash = g_hash_table_new_full (g_str_hash, g_str_equal, (GDestroyNotify) g_free, 
(GDestroyNotify) g_free);
+}
+
+/**
+ * gs_language_class_init:
+ * @klass: The GsLanguageClass
+ **/
+static void
+gs_language_class_init (GsLanguageClass *klass)
+{
+       GObjectClass *object_class = G_OBJECT_CLASS (klass);
+       object_class->finalize = gs_language_finalize;
+       g_type_class_add_private (klass, sizeof (GsLanguagePrivate));
+}
+
+/**
+ * gs_language_new:
+ *
+ * Return value: a new GsLanguage object.
+ **/
+GsLanguage *
+gs_language_new (void)
+{
+       GsLanguage *language;
+       language = g_object_new (GS_TYPE_LANGUAGE, NULL);
+       return GS_LANGUAGE (language);
+}
diff --git a/src/gs-language.h b/src/gs-language.h
new file mode 100644
index 0000000..7fb32a7
--- /dev/null
+++ b/src/gs-language.h
@@ -0,0 +1,60 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2008 Richard Hughes <richard hughsie com>
+ *
+ * Licensed under the GNU General Public License Version 2
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef __GS_LANGUAGE_H
+#define __GS_LANGUAGE_H
+
+#include <glib-object.h>
+
+G_BEGIN_DECLS
+
+#define GS_TYPE_LANGUAGE               (gs_language_get_type ())
+#define GS_LANGUAGE(o)                 (G_TYPE_CHECK_INSTANCE_CAST ((o), GS_TYPE_LANGUAGE, GsLanguage))
+#define GS_LANGUAGE_CLASS(k)           (G_TYPE_CHECK_CLASS_CAST((k), GS_TYPE_LANGUAGE, GsLanguageClass))
+#define GS_IS_LANGUAGE(o)              (G_TYPE_CHECK_INSTANCE_TYPE ((o), GS_TYPE_LANGUAGE))
+#define GS_IS_LANGUAGE_CLASS(k)                (G_TYPE_CHECK_CLASS_TYPE ((k), GS_TYPE_LANGUAGE))
+#define GS_LANGUAGE_GET_CLASS(o)       (G_TYPE_INSTANCE_GET_CLASS ((o), GS_TYPE_LANGUAGE, GsLanguageClass))
+#define GS_LANGUAGE_ERROR              (gs_language_error_quark ())
+#define GS_LANGUAGE_TYPE_ERROR         (gs_language_error_get_type ())
+
+typedef struct GsLanguagePrivate GsLanguagePrivate;
+
+typedef struct
+{
+        GObject                 parent;
+        GsLanguagePrivate      *priv;
+} GsLanguage;
+
+typedef struct
+{
+       GObjectClass    parent_class;
+} GsLanguageClass;
+
+GType           gs_language_get_type                   (void);
+GsLanguage     *gs_language_new                        (void);
+gboolean        gs_language_populate                   (GsLanguage      *language,
+                                                        GError         **error);
+gchar          *gs_language_iso639_to_language         (GsLanguage      *language,
+                                                        const gchar     *iso639);
+
+G_END_DECLS
+
+#endif /* __GS_LANGUAGE_H */