/*
 *   moolang.c
 *
 *   Copyright (C) 2004-2006 by Yevgen Muntyan <muntyan@math.tamu.edu>
 *
 *   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.
 *
 *   See COPYING file that comes with this distribution.
 */

#define MOOEDIT_COMPILATION
#include "config.h"
#include "mooedit/moolang-private.h"
#include "mooutils/mooi18n.h"
#include "gtksourceview/gtksourcelanguage-private.h"
#include <libxml/xmlreader.h>
#include <glib/gstdio.h>
#include <sys/stat.h>
#include <fcntl.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif


struct _MooLangPrivate {
    char *version;      /* not NULL; "" by default */
    char *author;       /* not NULL; "" by default */

    char *brackets;
    char *line_comment;
    char *block_comment_start;
    char *block_comment_end;

    guint hidden : 1;
};


G_DEFINE_TYPE (MooLang, moo_lang, GTK_TYPE_SOURCE_LANGUAGE)


static void
moo_lang_init (MooLang *lang)
{
    lang->priv = G_TYPE_INSTANCE_GET_PRIVATE (lang, MOO_TYPE_LANG, MooLangPrivate);
    lang->priv->version = g_strdup ("");
    lang->priv->author = g_strdup ("");
}


static void
moo_lang_finalize (GObject *object)
{
    MooLang *lang = MOO_LANG (object);

    g_free (lang->priv->version);
    g_free (lang->priv->author);
    g_free (lang->priv->brackets);
    g_free (lang->priv->line_comment);
    g_free (lang->priv->block_comment_start);
    g_free (lang->priv->block_comment_end);

    G_OBJECT_CLASS (moo_lang_parent_class)->finalize (object);
}


static void
moo_lang_class_init (MooLangClass *klass)
{
    G_OBJECT_CLASS (klass)->finalize = moo_lang_finalize;
    g_type_class_add_private (klass, sizeof (MooLangPrivate));
}


GtkSourceEngine *
_moo_lang_get_engine (MooLang *lang)
{
    g_return_val_if_fail (MOO_IS_LANG (lang), NULL);
    return _gtk_source_language_create_engine (GTK_SOURCE_LANGUAGE (lang));
}


MooLangMgr *
_moo_lang_get_mgr (MooLang *lang)
{
    g_return_val_if_fail (MOO_IS_LANG (lang), NULL);
    return MOO_LANG_MGR (_gtk_source_language_get_languages_manager (GTK_SOURCE_LANGUAGE (lang)));
}


void
_moo_lang_parse_file (MooLang *lang)
{
    GtkSourceLanguage *slang;
    xmlTextReaderPtr reader;
    int ret;
    int fd;

    g_return_if_fail (MOO_IS_LANG (lang));

    slang = GTK_SOURCE_LANGUAGE (lang);
    g_return_if_fail (slang->priv->lang_file_name != NULL);

    fd = g_open (slang->priv->lang_file_name, O_RDONLY, 0);
    g_return_if_fail (fd != -1);

    reader = xmlReaderForFd (fd, slang->priv->lang_file_name, NULL, 0);

    if (!reader)
    {
        g_critical ("%s: oops", G_STRLOC);
        close (fd);
        return;
    }

    ret = xmlTextReaderRead (reader);

    while (ret == 1)
    {
    	if (xmlTextReaderNodeType (reader) == XML_READER_TYPE_ELEMENT)
    	{
    		xmlChar *name = xmlTextReaderName (reader);

    		if (xmlStrcmp (name, BAD_CAST "language") == 0)
    		{
//     			read_language_node (lang, reader, slang->priv->lang_file_name);
    			ret = 0;
    		}

    		xmlFree (name);
    	}

    	if (ret == 1)
            ret = xmlTextReaderRead (reader);
    }

    xmlFreeTextReader (reader);
    close (fd);
}


const char *
_moo_lang_id (MooLang *lang)
{
    g_return_val_if_fail (!lang || MOO_IS_LANG (lang), NULL);

    if (lang)
        return GTK_SOURCE_LANGUAGE(lang)->priv->id;
    else
        return MOO_LANG_NONE;
}


const char *
_moo_lang_display_name (MooLang *lang)
{
    g_return_val_if_fail (!lang || MOO_IS_LANG (lang), NULL);

    if (lang)
        return GTK_SOURCE_LANGUAGE(lang)->priv->name;
    else
        return _(MOO_LANG_NONE_NAME);
}


const char *
_moo_lang_get_line_comment (MooLang *lang)
{
    g_return_val_if_fail (MOO_IS_LANG (lang), NULL);
    return GTK_SOURCE_LANGUAGE(lang)->priv->line_comment;
}


const char *
_moo_lang_get_block_comment_start (MooLang *lang)
{
    g_return_val_if_fail (MOO_IS_LANG (lang), NULL);
    return GTK_SOURCE_LANGUAGE(lang)->priv->block_comment_start;
}


const char *
_moo_lang_get_block_comment_end (MooLang *lang)
{
    g_return_val_if_fail (MOO_IS_LANG (lang), NULL);
    return GTK_SOURCE_LANGUAGE(lang)->priv->block_comment_end;
}


const char *
_moo_lang_get_brackets (MooLang *lang)
{
    g_return_val_if_fail (MOO_IS_LANG (lang), NULL);
    return GTK_SOURCE_LANGUAGE(lang)->priv->brackets;
}


const char *
_moo_lang_get_section (MooLang *lang)
{
    g_return_val_if_fail (MOO_IS_LANG (lang), NULL);
    return GTK_SOURCE_LANGUAGE(lang)->priv->section;
}


gboolean
_moo_lang_get_hidden (MooLang *lang)
{
    g_return_val_if_fail (MOO_IS_LANG (lang), TRUE);
    return GTK_SOURCE_LANGUAGE(lang)->priv->hidden != 0;
}


char *
_moo_lang_id_from_name (const char *whatever)
{
    if (!whatever || !g_ascii_strcasecmp (whatever, MOO_LANG_NONE))
        return g_strdup (MOO_LANG_NONE);
    else
        return g_strstrip (g_ascii_strdown (whatever, -1));
}