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/*
RarArchive.m
Zipper
Copyright (C) 2012 Free Software Foundation, Inc
Authors:
This application 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
*/
#import <Foundation/Foundation.h>
#import "RarArchive.h"
#import "FileInfo.h"
#import "NSString+Custom.h"
#import "Preferences.h"
#import "NSArray+Custom.h"
#import "common.h"
static NSData *_magicBytes;
@interface RarArchive (PrivateAPI)
- (NSData *)dataByRunningRar;
@end
@implementation RarArchive : Archive
/**
* register our supported file extensions with our superclass.
*/
+ (void)initialize
{
// rar files start with 'R a r !'
char rarBytes[] = { 'R', 'a', 'r', '!' };
_magicBytes = [[NSData dataWithBytes:rarBytes length:4] retain];
[self registerFileExtension:@"rar" forArchiveClass:self];
}
+ (NSString *)unarchiveExecutable
{
return [Preferences rarExecutable];
}
/**
* rar archives <em>do</em> contain info about compression ratio.
*/
+ (BOOL)hasRatio;
{
return YES;
}
+ (ArchiveType)archiveType
{
return RAR;
}
+ (NSData *)magicBytes
{
return _magicBytes;
}
//------------------------------------------------------------------------------
// expanding the archive
//------------------------------------------------------------------------------
- (int)expandFiles:(NSArray *)files withPathInfo:(BOOL)usePathInfo toPath:(NSString *)path
{
FileInfo *fileInfo;
NSMutableArray *args;
args = [NSMutableArray array];
if (usePathInfo)
{
[args addObject:@"x"];
}
else
{
[args addObject:@"e"];
}
// protect against archives and files starting with -
[args addObject:@"--"];
[args addObject:[self path]];
if (files != nil)
{
NSEnumerator *cursor = [files objectEnumerator];
while ((fileInfo = [cursor nextObject]) != nil)
{
[args addObject:[fileInfo fullPath]];
}
}
// destination dir
[args addObject:path];
return [self runUnarchiverWithArguments:args];
}
- (NSArray *)listContents
{
NSUInteger lineCount, i;
NSString *path = nil;
NSMutableArray *results = [NSMutableArray array];
NSData *data = [self dataByRunningRar];
NSString *string = [[[NSString alloc] initWithData:data
encoding:NSASCIIStringEncoding] autorelease];
NSArray *lines = [string componentsSeparatedByString:@"\n"];
// take out first 9 lines (header) and last 3 lines (footer)
lines = [lines subarrayWithRange:NSMakeRange(8, [lines count] - 8)];
lines = [lines subarrayWithRange:NSMakeRange(0, [lines count] - 4)];
lineCount = [lines count];
for (i = 0; i < lineCount; i++)
{
NSString *line = nil;
line = [lines objectAtIndex:i];
if ((i % 2) == 0)
{
path = [line stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
}
else
{
NSArray *components;
NSString *date, *ratio;
int length;
NSCalendarDate *calendarDate;
FileInfo *info;
components = [[line componentsSeparatedByString:@" "] arrayByRemovingEmptyStrings];
// continue only for non-directory entries
if ([[components objectAtIndex:5] hasPrefix:@"d"] == NO)
{
length = [[components objectAtIndex:0] intValue];
ratio = [components objectAtIndex:2];
date = [components objectAtIndex:3];
date = [NSString stringWithFormat:@"%@ %@", date, [components objectAtIndex:4]];
calendarDate = [NSCalendarDate dateWithString:date
calendarFormat:@"%d-%m-%y %H:%M"];
info = [FileInfo newWithPath:path date:calendarDate
size:[NSNumber numberWithInt:length] ratio:ratio];
[results addObject:info];
}
}
}
return results;
}
//------------------------------------------------------------------------------
// private API
//------------------------------------------------------------------------------
- (NSData *)dataByRunningRar
{
// Args for rar:
// v view contents of archive
// -c- suppress archive comment
NSArray *args = [NSArray arrayWithObjects:@"v", @"-c-", @"--", [self path], nil];
return [self dataByRunningUnachiverWithArguments:args];
}
@end
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