/* 
 * Copyright (C) 2003	Hudson Reis, Wesley Oliveira, Aline Oliveira.
 * 
 * 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
 */

/* COB internal routines */

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

#ifndef MAXLINE
	#define MAXLINE 	1024
	#define MINLINE		 256
#endif

#ifdef __MSVCRT__
	#define BARRA	'\\'
	#define COBARRA	"\\"
#else
	#define BARRA 	'/'
	#define COBARRA "/"
#endif


struct globals{
	char cobprin[MAXLINE];
	char cobprou[MAXLINE];
	char tmpin[MAXLINE];
	char tmpou[MAXLINE];
	char *home;
	char *pwd;
	char *var;
	int  gper;
	int  uper;
	int  per;
};

struct globals var;

extern char cobpri[MAXLINE], cobpro[MAXLINE];


int cbl_get_per(char *str)
{
	struct stat fd;
	int id;


	id=0;
	if((stat(str,&fd))==-1){ return 1; }
	if(access(str,R_OK)==0) id+=4;
	if(access(str,W_OK)==0) id+=2;
	if(access(str,X_OK)==0) id++;
	if(access(str,X_OK)==0){
		if(id == 6) id+=1;
		if(id == 4) id+=1;
		if(id == 2) id+=1;
	}
	
	switch(id){
		case 7: chmod(str,0751);
		   	break;
		case 6: chmod(str,0644);
			break;
		case 5: chmod(str,0551);
			break;
		case 4: chmod(str,0444);
			break;
		case 3: chmod(str,0311);
			break;
		default: chmod(str,0666);
			break;
	}					  
	return 0;
}

void cbl_get(char *str)
{
	if(!strcmp(str,"HOME"))
		var.home = getenv(str);
	else if(!strcmp(str,"PWD"))
		var.pwd = getenv(str);
	else
		var.var = getenv(str);
}

void cbl_clear(int valor)
{
	register int i;
	
	if(valor == 1){
		for(i=0;i<=MAXLINE;i++){
			var.cobprin[i]='\0';
			var.cobprou[i]='\0';
		}
	}
	else if(valor == 2){
		for(i=0;i<=MAXLINE;i++){
			var.tmpou[i]='\0';
		}
	}
	else if(valor == 3){
		for(i=0;i<=MAXLINE;i++){
			var.cobprou[i]=' ';
		}
		var.cobprou[i]='\0';
	}
	else if(valor == 4){
		for(i=0;i<=MAXLINE;i++){
			var.cobprin[i]=' ';
		}
		var.cobprin[i]='\0';
	}
}


int cbl_copy(void)
{
	FILE *fd_in, *fd_ou;
	int c;
	DIR *dir,*dit;
	struct dirent *data;

	strcpy(var.tmpin,var.cobprin);
	strcpy(var.tmpou,var.cobprou);

	if((dir=opendir(var.cobprin))==NULL) { return -1; }
	else{
		chdir(var.cobprin);
		while ( (data=readdir(dir)) ) {
			if((dit=opendir(data->d_name))!=NULL){
				closedir(dit);
				continue;
			}
			cbl_clear(1);
			strcpy(var.cobprou,var.tmpou);
			strcat(var.cobprou,COBARRA);
			strcat(var.cobprin,data->d_name);
			strcat(var.cobprou,data->d_name);


			if((fd_in=fopen(var.cobprin,"rb"))==NULL) break;
			if((fd_ou=fopen(var.cobprou,"wb"))==NULL){
				fclose(fd_in);
				break;
			}
			else{
				while((c=getc(fd_in))!=EOF){
					putc(c,fd_ou);
				}
				fclose(fd_in);
				fclose(fd_ou);
				cbl_get_per(var.cobprou);
			}
		}
		closedir(dir);
	}
	
	return 0;  // why this shit returns an int???
}
				

int cbl_test(char *str,char *sts)
{
	int valor=0;
	char data[MAXLINE];
	register int i = 0;
	register int e = 0;
	DIR *dir;
	
	if(strstr(str,"~")){
		cbl_get("HOME");
		for(i=0,e=0;i<=MAXLINE;i++){
			if(str[i] == '~') continue;
			data[e] = str[i];
			e++;
		}
		data[e] = '\0';
		strcpy(var.tmpin,var.home);
		strcat(var.tmpin,data);
		strcpy(var.cobprin,var.tmpin);
		valor++;
	}
	else{ 
		cbl_clear(4);
		strcpy(var.cobprin,str); 
		valor++;
	}
	
	
	if(strstr(sts,"~")){ 
		cbl_get("HOME");
		for(i=0,e=0;i<=MAXLINE;i++){
			if(sts[i] == '~') continue;
			data[e] = sts[i];
			e++;
		}
		data[e] = '\0';
		strcpy(var.tmpou,var.home);
		strcat(var.tmpou,data);
		strcpy(var.cobprou,var.tmpou);
		if(var.cobprou[(strlen(var.cobprou))] == BARRA)
			var.cobprou[(strlen(var.cobprou))] = '\0';
		valor++;
	}
	else { 
		cbl_clear(3);
		strcpy(var.cobprou,sts); 
		valor++;
	}

	if(strstr(var.cobprin,"*")){
		if((dir=opendir(var.cobprou))==NULL) { return valor; }
		else{
			var.cobprin[(strlen(var.cobprin)-1)] = '\0';
			closedir(dir);
			cbl_copy();
		}
		return -2;
	}
	if((dir=opendir(var.cobprou))!=NULL){
		for(i=strlen(var.cobprin);i>0;i--){
			if(var.cobprin[i] == BARRA){ 
				e = i;
				break;
			}
		}
		for(i=(strlen(var.cobprou));e<=strlen(var.cobprin);i++,e++){
			var.cobprou[i]=var.cobprin[e];
		}
		var.cobprou[i] = '\0';
		closedir(dir);
	}
		
	return valor;
}

int cbl_parm(char *str,char *sts)
{
	register int v,i;
	
	if ( (v=cbl_test(str,sts)) != 0 ) { 
		if ( v == -2 ) { 
			return v; 
		}
		
		if ( access(var.cobprin,F_OK) != 0 ) { 
			return 1; 
		}
		
		if ( !strcmp(var.cobprin,var.cobprou) ) { 
			return 1; 
		}
		
		for ( i=0 ; i<=MAXLINE ; i++ ) {
			cobpri[i] = ' ';
			cobpro[i] = ' ';
		}

		cobpri[i]='\0';
		cobpro[i]='\0';
		strcpy(cobpri,var.cobprin);
		strcpy(cobpro,var.cobprou);
	}
	
	return 0;
}

int cbl_align(char *data) {
	int i=0;
	if ((strlen(data) == 0)) { 
		return 1; 
	} else { 
		for (i=(strlen(data));i>=0;i--) {
			if (data[i] != ' ' && data[i] != '\0') {
				break;
			}
		}
		data[i+1] = '\0';
		return 0;
	}
}