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diff --git a/src/fr-command.h b/src/fr-command.h
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+++ b/src/fr-command.h
@@ -0,0 +1,228 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+
+/*
+ *  File-Roller
+ *
+ *  Copyright (C) 2001 The Free Software Foundation, Inc.
+ *
+ *  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., 59 Temple Street #330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef FR_COMMAND_H
+#define FR_COMMAND_H
+
+#include <glib.h>
+#include "file-data.h"
+#include "fr-process.h"
+
+#define PACKAGES(x) (x)
+
+#define FR_TYPE_COMMAND            (fr_command_get_type ())
+#define FR_COMMAND(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), FR_TYPE_COMMAND, FrCommand))
+#define FR_COMMAND_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), FR_TYPE_COMMAND, FrCommandClass))
+#define FR_IS_COMMAND(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), FR_TYPE_COMMAND))
+#define FR_IS_COMMAND_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), FR_TYPE_COMMAND))
+#define FR_COMMAND_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS((obj), FR_TYPE_COMMAND, FrCommandClass))
+
+typedef struct _FrCommand         FrCommand;
+typedef struct _FrCommandClass    FrCommandClass;
+
+typedef enum {
+	FR_ACTION_NONE,
+	FR_ACTION_CREATING_NEW_ARCHIVE,
+	FR_ACTION_LOADING_ARCHIVE,            /* loading the archive from a remote location */
+	FR_ACTION_LISTING_CONTENT,            /* listing the content of the archive */
+	FR_ACTION_DELETING_FILES,             /* deleting files from the archive */
+	FR_ACTION_TESTING_ARCHIVE,            /* testing the archive integrity */
+	FR_ACTION_GETTING_FILE_LIST,          /* getting the file list (when fr_archive_add_with_wildcard or
+						 fr_archive_add_directory are used, we need to scan a directory
+						 and collect the files to add to the archive, this
+						 may require some time to complete, so the operation
+						 is asynchronous) */
+	FR_ACTION_COPYING_FILES_FROM_REMOTE,  /* copying files to be added to the archive from a remote location */
+	FR_ACTION_ADDING_FILES,               /* adding files to an archive */
+	FR_ACTION_EXTRACTING_FILES,           /* extracting files */
+	FR_ACTION_COPYING_FILES_TO_REMOTE,    /* copying extracted files to a remote location */
+	FR_ACTION_CREATING_ARCHIVE,           /* creating a local archive */
+	FR_ACTION_SAVING_REMOTE_ARCHIVE       /* copying the archive to a remote location */
+} FrAction;
+
+#ifdef DEBUG
+extern char *action_names[];
+#endif
+
+struct _FrCommand
+{
+	GObject  __parent;
+
+	/*<public, read only>*/
+
+	GPtrArray     *files;           /* Array of FileData* */
+	int            n_regular_files;
+	FrProcess     *process;         /* the process object used to execute
+				         * commands. */
+	char          *filename;        /* archive file path. */
+	char          *e_filename;      /* escaped archive filename. */
+	const char    *mime_type;
+	gboolean       multi_volume;
+
+	/*<protected>*/
+
+	/* options */
+
+	char          *password;
+	gboolean       encrypt_header : 1;
+	FrCompression  compression;
+	guint          volume_size;
+	gboolean       creating_archive;
+
+	/* features. */
+
+	guint          propAddCanUpdate : 1;
+	guint          propAddCanReplace : 1;
+	guint          propAddCanStoreFolders : 1;
+	guint          propExtractCanAvoidOverwrite : 1;
+	guint          propExtractCanSkipOlder : 1;
+	guint          propExtractCanJunkPaths : 1;
+	guint          propPassword : 1;
+	guint          propTest : 1;
+	guint          propCanExtractAll : 1;
+	guint          propCanDeleteNonEmptyFolders : 1;
+	guint          propCanExtractNonEmptyFolders : 1;
+	guint          propListFromFile : 1;
+
+	/*<private>*/
+
+	FrCommandCaps  capabilities;
+	FrAction       action;        /* current action. */
+	gboolean       fake_load;     /* if TRUE does nothing when the list
+				       * operation is invoked. */
+
+	/* progress data */
+
+	int            n_file;
+	int            n_files;
+};
+
+struct _FrCommandClass
+{
+	GObjectClass __parent_class;
+
+	/*<virtual functions>*/
+
+	void          (*list)             (FrCommand     *comm);
+	void          (*add)              (FrCommand     *comm,
+					   const char    *from_file,
+				           GList         *file_list,
+				           const char    *base_dir,
+				           gboolean       update,
+				           gboolean       recursive);
+	void          (*delete)           (FrCommand     *comm,
+			                   const char    *from_file,
+				           GList         *file_list);
+	void          (*extract)          (FrCommand     *comm,
+			                   const char    *from_file,
+				           GList         *file_list,
+				           const char    *dest_dir,
+				           gboolean       overwrite,
+				           gboolean       skip_older,
+				           gboolean       junk_paths);
+	void          (*test)             (FrCommand     *comm);
+	void          (*uncompress)       (FrCommand     *comm);
+	void          (*recompress)       (FrCommand     *comm);
+	void          (*handle_error)     (FrCommand     *comm,
+				           FrProcError   *error);
+	const char ** (*get_mime_types)   (FrCommand     *comm);
+	FrCommandCap  (*get_capabilities) (FrCommand     *comm,
+					   const char    *mime_type,
+					   gboolean       check_command);
+	void          (*set_mime_type)    (FrCommand     *comm,
+				           const char    *mime_type);
+	const char *  (*get_packages)     (FrCommand     *comm,
+					   const char    *mime_type);
+
+	/*<signals>*/
+
+	void          (*start)            (FrCommand   *comm,
+			 	           FrAction     action);
+	void          (*done)             (FrCommand   *comm,
+				           FrAction     action,
+				           FrProcError *error);
+	void          (*progress)         (FrCommand   *comm,
+				           double       fraction);
+	void          (*message)          (FrCommand   *comm,
+				           const char  *msg);
+	void          (*working_archive)  (FrCommand   *comm,
+					   const char  *filename);
+};
+
+GType          fr_command_get_type            (void);
+void           fr_command_set_filename        (FrCommand     *comm,
+					       const char    *filename);
+void           fr_command_set_multi_volume    (FrCommand     *comm,
+					       const char    *filename);
+void           fr_command_list                (FrCommand     *comm);
+void           fr_command_add                 (FrCommand     *comm,
+					       const char    *from_file,
+					       GList         *file_list,
+					       const char    *base_dir,
+					       gboolean       update,
+					       gboolean       recursive);
+void           fr_command_delete              (FrCommand     *comm,
+					       const char    *from_file,
+					       GList         *file_list);
+void           fr_command_extract             (FrCommand     *comm,
+					       const char    *from_file,
+					       GList         *file_list,
+					       const char    *dest_dir,
+					       gboolean       overwrite,
+					       gboolean       skip_older,
+					       gboolean       junk_paths);
+void           fr_command_test                (FrCommand     *comm);
+void           fr_command_uncompress          (FrCommand     *comm);
+void           fr_command_recompress          (FrCommand     *comm);
+gboolean       fr_command_is_capable_of       (FrCommand     *comm,
+					       FrCommandCaps  capabilities);
+const char **  fr_command_get_mime_types      (FrCommand     *comm);
+void           fr_command_update_capabilities (FrCommand     *comm);
+FrCommandCap   fr_command_get_capabilities    (FrCommand     *comm,
+					       const char    *mime_type,
+					       gboolean       check_command);
+void           fr_command_set_mime_type       (FrCommand     *comm,
+					       const char    *mime_type);
+gboolean       fr_command_is_capable_of       (FrCommand     *comm,
+					       FrCommandCaps  capabilities);
+const char *   fr_command_get_packages        (FrCommand     *comm,
+					       const char    *mime_type);
+
+/* protected functions */
+
+void           fr_command_progress            (FrCommand     *comm,
+					       double         fraction);
+void           fr_command_message             (FrCommand     *comm,
+					       const char    *msg);
+void           fr_command_working_archive     (FrCommand     *comm,
+		                               const char    *archive_name);
+void           fr_command_set_n_files         (FrCommand     *comm,
+					       int            n_files);
+void           fr_command_add_file            (FrCommand     *comm,
+					       FileData      *fdata);
+
+/* private functions */
+
+void           fr_command_handle_error        (FrCommand     *comm,
+					       FrProcError   *error);
+
+#endif /* FR_COMMAND_H */