/* 
 * Copyright (C) 2003 	Wesley Oliveira, Aline Oliveira, Hudson Reis. 
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation; either version 2.1,
 * or (at your option) any later version.
 * 
 * This library 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 Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; see the file COPYING.LIB.  If
 * not, write to the Free Software Foundation, Inc., 59 Temple Place,
 * Suite 330, Boston, MA 02111-1307 USA
 */

#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <dirent.h>
#include <windows.h>
#include <sys/stat.h>

#define OK       0
#define ERRO     1
#define NDATA   -1

#ifdef __MSVCRT__
	#define cbl_BARRA 	"\\"
#else
	#define cbl_BARRA		"/"
#endif

typedef unsigned int cbl_t;
DIR *current_directory;
struct dirent *current_file;

/* Prototypes */
cbl_t cbl_open_dir(char *directory);
cbl_t cbl_rewind_dir();
cbl_t cbl_read_dir(char *file);
cbl_t cbl_close_dir();
cbl_t cbl_remove_file(char *file);
void cbl_sleep(unsigned int *time);

cbl_t cbl_copy_dir(char *entrada, char *saida);         
cbl_t cbl_create_dir(char *dados, int mode);                 
cbl_t cbl_delete_dir(char *dados);			 
cbl_t cbl_move_dir(char *origem, char *destino);	
cbl_t cbl_copy_file(char *entrada, char *saida);        
cbl_t cbl_delete_file(char *arquivo);                

int cbl_align(char *);

/* Functions */
void cbl_sleep(unsigned int *time) {
	Sleep(*time);
	return;
}

cbl_t cbl_open_dir(char *directory) {
	char name[256];
	int p;
	if(current_directory) // close the current directory before
		closedir(current_directory);
	p = 0;
	while(p<256 && *(directory+p) != ' ') {
		name[p] = *(directory+p);
		p++;
	}
	name[p] = 0;
	current_directory = opendir(name);
	if(!current_directory)
		return ERRO;
	return OK;
}

cbl_t cbl_rewind_dir() {
	if(!current_directory)
		return ERRO;
	rewinddir(current_directory);
	return OK;
}

cbl_t cbl_read_dir(char *file) {
	int i;
	if(!current_directory)
		return ERRO;
	current_file = readdir(current_directory);
	if(!current_file)
		return ERRO;
	i = 0;
	while(current_file->d_name[i]) {
		*(file + i) = current_file->d_name[i];
		i++;
	}
	return OK;
}

cbl_t cbl_close_dir() {
	if(!current_directory) // close the current directory before
		return ERRO;
	closedir(current_directory);
	return OK;
}

cbl_t cbl_remove_file(char *file) {
	char name[256];
	int p;
	p = 0;
	while(p<256 && *(file+p) != ' ') {
		name[p] = *(file+p);
		p++;
	}
	name[p] = 0;
	if(unlink(&name[0])==0)
		return OK;
	return ERRO;
}

cbl_t cbl_copy_dir(char *entrada, char *saida)
{
	DIR *dir_a,*dir_b;
	struct dirent *arquivo;
	char *bufr, *bufs;
	//cbl_t d;
        
	if(*entrada){
		if(cbl_align(entrada)==ERRO) return(1);
			if(cbl_align(saida)==ERRO) return(1);
        } else { 
			return(ERRO); 
		}

        bufr = (char *) malloc(sizeof(char)*(strlen(entrada)+100));
        if(!bufr) { 
			return(4); 
		}
        
		bufs = (char *) malloc(sizeof(char)*(strlen(saida) +100));
        if(!bufs) { 
			return(4); 
		}

        if ( (dir_a = opendir(entrada)) == NULL ) { 
			return(2); 
		}

        if((dir_b = opendir(saida)) != NULL) {
			closedir(dir_a);
            closedir(dir_b);
            return(3);
        }
        else {
            cbl_create_dir(saida,0766);
            while( (arquivo=readdir(dir_a)) ) {
				strcpy(bufr,saida);
				strcpy(bufs,entrada);
                strcat(bufr,cbl_BARRA);
                strcat(bufs,cbl_BARRA);
                if( !strcmp(arquivo->d_name,".") ) { 
					continue; 
				}
                else 
					if( !strcmp(arquivo->d_name,"..") ) { 
						continue; 
					}
					
				strcat(bufr,arquivo->d_name);
                strcat(bufs,arquivo->d_name);
                cbl_copy_file(bufs,bufr);
			}
        }        
        closedir(dir_a);
        free(bufr);
        free(bufs);
        return(OK);
}

cbl_t cbl_create_dir(char *dados, int mode)
{
	DIR *dir;

    if(*dados) {
        if(cbl_align(dados)==ERRO){ return(1); }
	}
	else {  
		return(1); 
	}

	if( (dir = opendir(dados)) != NULL ) {
		return ERRO;
	}

// Nilo, 23rd april 2007
// Aparently MINGW doesn't accept two parameters for mkdir....
//        if(mkdir(dados, mode) == -1){  
	if(mkdir(dados) == -1) {
		return ERRO;
	}
        
	chmod(dados,mode);

	return(OK);
}

cbl_t cbl_delete_dir(char *dados)
{
	DIR *dir;
	struct dirent *file;

	if(*dados)	{
		if(cbl_align(dados)==ERRO) { 
			return(1); 
		}
	}
    else { 
		return(1); 
	}

	if( (dir = opendir(dados)) == NULL) {
		return(2);
	}

	closedir(dir);
      
	if( rmdir(dados) == 0 ) {  /* Nao existe nada no diretorio */
		return(OK);
	}
	else {				/* Aqui existe arquivos no diretorio
                         * entao sao apagados e ai depois apaga
                         * o diretorio.
						 */
		dir = opendir(dados);
		while( (file = readdir(dir)) ) {
			chdir(dados);
			cbl_delete_file(file->d_name);
		}
		closedir(dir);
		chdir("..");
		if ( rmdir(dados) != 0 ) { 
			return(ERRO); 
		}
	}
      
	return(OK);
}

cbl_t cbl_move_dir(char *origem, char *destino)
{
	DIR *dir;
	//cbl_t d;

    if ( (!*origem) || (!*destino) ) { 
		return(1); 
	}

    if ( cbl_align(origem) == ERRO ) { 
		return(1); 
	}
    
    if ( cbl_align(destino) == ERRO ) {
		return(1); 
	}

    if ( (dir = opendir(destino)) != NULL ) { 
		closedir(dir); 
		return(ERRO); 
	}
	
    if ( cbl_copy_dir(origem,destino) == OK ) {
		if( cbl_delete_dir(origem) != OK ) { 
			return(ERRO); 
		}
	}
    else { 
		return(ERRO); 
	}
	
    return(OK);
}

cbl_t cbl_change_dir(char *path) {
	if ( cbl_align(path) != 0 ) { 
		return 1; 
	}
	
	if ( chdir(path) != 0 ) { 
		return 2; 
	}
	
	return 0;
}

void cbl_get_current_dir(char *path, cbl_t *retorno) {
	*retorno = 0;
	
	if ( getcwd(path, 1024) == NULL ) { 
		*retorno = 1; 
	}
}