aboutsummaryrefslogblamecommitdiffstats
path: root/src/directory.c
blob: 002cb65e36d9bcba3ad3333ad2b79a0df61cd0c8 (plain) (tree)
1
2
                                
                                                                   
















                                                                            
                  
 


                   
                  
                                                         
 
                                    
                                      
 

                                                 
 

                                                                   
                                   
                                                   



                         
    
                                           
 
                                             
                                           
                        
                                           
                                      

 
    
                                                  
 



                                                 
                                                   
                                                    
                                                       
         

                                   

 
                  
                                                                      
 

                                          

                         
 

                             
                                  
                                 
 




                                         
                                                                    
                              
                                             





                                                 
 
                         
 
                     

 
    
                                           
 

                                                 
 
                        
                                        
 
                                    
                                            

 
   



                                                             
 
                                                 
                    
                 
 

                                                                  

                          


                                                                             

         
                                                
                                                              
                                                                  
 
                   
 
/* the Music Player Daemon (MPD)
 * Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
 * This project's homepage is: http://www.musicpd.org
 *
 * 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 Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include "directory.h"
#include "utils.h"

#include <assert.h>
#include <string.h>

struct directory *
directory_new(const char *path, struct directory *parent)
{
	struct directory *directory;
	size_t pathlen = strlen(path);

	assert(path != NULL);
	assert((*path == 0) == (parent == NULL));

	directory = xcalloc(1, sizeof(*directory) -
			    sizeof(directory->path) + pathlen + 1);
	directory->parent = parent;
	memcpy(directory->path, path, pathlen + 1);

	return directory;
}

void
directory_free(struct directory *directory)
{
	dirvec_destroy(&directory->children);
	songvec_destroy(&directory->songs);
	free(directory);
	/* this resets last dir returned */
	/*directory_get_path(NULL); */
}

void
directory_prune_empty(struct directory *directory)
{
	int i;
	struct dirvec *dv = &directory->children;

	for (i = dv->nr; --i >= 0; ) {
		directory_prune_empty(dv->base[i]);
		if (directory_is_empty(dv->base[i]))
			dirvec_delete(dv, dv->base[i]);
	}
	if (!dv->nr)
		dirvec_destroy(dv);
}

struct directory *
directory_get_directory(struct directory *directory, const char *name)
{
	struct directory *cur = directory;
	struct directory *found = NULL;
	char *duplicated;
	char *locate;

	assert(name != NULL);

	if (isRootDirectory(name))
		return directory;

	duplicated = xstrdup(name);
	locate = strchr(duplicated, '/');
	while (1) {
		if (locate)
			*locate = '\0';
		if (!(found = directory_get_child(cur, duplicated)))
			break;
		assert(cur == found->parent);
		cur = found;
		if (!locate)
			break;
		*locate = '/';
		locate = strchr(locate + 1, '/');
	}

	free(duplicated);

	return found;
}

void
directory_sort(struct directory *directory)
{
	int i;
	struct dirvec *dv = &directory->children;

	dirvec_sort(dv);
	songvec_sort(&directory->songs);

	for (i = dv->nr; --i >= 0; )
		directory_sort(dv->base[i]);
}

int
directory_walk(struct directory *directory,
	       int (*forEachSong)(struct song *, void *),
	       int (*forEachDir)(struct directory *, void *),
	       void *data)
{
	struct dirvec *dv = &directory->children;
	int err = 0;
	size_t j;

	if (forEachDir && (err = forEachDir(directory, data)) < 0)
		return err;

	if (forEachSong) {
		err = songvec_for_each(&directory->songs, forEachSong, data);
		if (err < 0)
			return err;
	}

	for (j = 0; err >= 0 && j < dv->nr; ++j)
		err = directory_walk(dv->base[j], forEachSong,
						forEachDir, data);

	return err;
}