/* 
 *  Alex Duggan <aldug@astrolinux.com>
 *  
 *  gcc -Wall `pkg-config --cflags --libs glib-2.0` -o theme-test theme-test.c
 */


#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <glib.h>

typedef enum
{
	THEME_TARBALL_TYPE_STANDARD,
	THEME_TARBALL_TYPE_ICON,
	THEME_TARBALL_TYPE_ENGINE,
	THEME_TARBALL_TYPE_SOURCE_TARBALL,
	THEME_TARBALL_TYPE_UNKNOWN
} ThemeTarballType;

typedef enum
{
	/* error types */
 	THEME_TARBALL_ERROR_PERMISSION_DENIED,
	THEME_TARBALL_ERROR_CORRUPT_THEME
} ThemeTarballError;

/* Function Prototypes */

gboolean 
tarball_contains_file (gchar *tarball_uri, gchar *filename);

ThemeTarballType 
theme_tarball_get_type (gchar *theme_tarball_uri);

/* Functions */

gboolean 
tarball_contains_file (gchar *tarball_uri, gchar *filename)
{
	int status;
	char *command, *result;
	long matches;
	
	command = g_strdup_printf ("sh -c 'tar ztf \"%s\" | grep -c %s'", tarball_uri, filename);
	printf ("Command: %s\n", command);
	
	if (g_spawn_command_line_sync (command, &result, NULL, &status, NULL) && status== 0)
	{
		/* remove trailing white space */
		if (result[strlen(result)-1] == '\n')
			result[strlen(result)-1] = 0;
		
		matches = strtol (result, NULL , 10);
		
		if (matches > 0)
			return TRUE;
	}
	
	return FALSE;
}

ThemeTarballType 
theme_tarball_get_type (gchar *theme_tarball_uri)
{
	/* check for theme engine */
	if (tarball_contains_file (theme_tarball_uri, "configure"))
	{
		return THEME_TARBALL_TYPE_ENGINE;		
	}
	
	/* check for gtk/metacity theme */
	if (tarball_contains_file (theme_tarball_uri, "gtkrc") || tarball_contains_file (theme_tarball_uri, "metacity-theme-1.xml"))
	{
		return THEME_TARBALL_TYPE_STANDARD;
	}
	
	/* check for icon theme */
	if (tarball_contains_file (theme_tarball_uri, "index.theme"))
	{
		return THEME_TARBALL_TYPE_ICON;
	}
	
	return THEME_TARBALL_TYPE_UNKNOWN;
}

int 
main (int argc, char **argv)
{
	ThemeTarballType theme_type;
	
	if (argc < 2) {
                printf ("Usage: %s <uri>\n", argv[0]);
                exit (1);
        }
	
	theme_type = theme_tarball_get_type (argv[1]);
	
	printf("Theme Type: %d\n", theme_type);
	
	return 0;
}