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#import <Foundation/Foundation.h>
#import "SevenZipArchive.h"
#import "FileInfo.h"
#import "NSString+Custom.h"
#import "Preferences.h"
#import "NSArray+Custom.h"
@interface SevenZipArchive (PrivateAPI)
- (NSData *)dataByRunningSevenZip;
- (NSArray *)listSevenZipContents:(NSArray *)lines;
@end
@implementation SevenZipArchive : Archive
/**
* register our supported file extensions with superclass.
*/
+ (void)initialize
{
[self registerFileExtension:@"7z" forArchiveClass:self];
[self registerFileExtension:@"7za" forArchiveClass:self];
}
+ (NSString *)archiveExecutable
{
return [Preferences sevenZipExecutable];
}
+ (NSString *)unarchiveExecutable
{
return [Preferences sevenZipExecutable];
}
+ (BOOL)hasRatio;
{
return NO;
}
+ (ArchiveType)archiveType
{
return SEVENZIP;
}
//------------------------------------------------------------------------------
// expanding the archive
//------------------------------------------------------------------------------
- (int)expandFiles:(NSArray *)files withPathInfo:(BOOL)usePathInfo toPath:(NSString *)path
{
FileInfo *fileInfo;
NSMutableArray *args;
args = [NSMutableArray array];
if (usePathInfo == YES)
{
[args addObject:@"x"];
}
else
{
// extract flat
[args addObject:@"e"];
}
// assume yes on all queries (needed for silently overwriting files)
[args addObject:@"-y"];
// destination dir, path must not be separated with blank from the 'o' option
[args addObject:[@"-o" stringByAppendingString:path]];
// protect for archives and files starting with -
[args addObject:@"--"];
// add archive filename
[args addObject:[self path]];
if (files != nil)
{
NSEnumerator *cursor = [files objectEnumerator];
while ((fileInfo = [cursor nextObject]) != nil)
{
[args addObject:[fileInfo fullPath]];
}
}
return [self runUnarchiverWithArguments:args];
}
- (NSArray *)listContents
{
NSData *data = [self dataByRunningSevenZip];
NSString *string = [[[NSString alloc] initWithData:data
encoding:NSASCIIStringEncoding] autorelease];
NSArray *lines = [string componentsSeparatedByString:@"\n"];
// take out first 8 lines (header) and last 2 lines (footer)
lines = [lines subarrayWithRange:NSMakeRange(17, [lines count] - 17)];
lines = [lines subarrayWithRange:NSMakeRange(0, [lines count] - 3)];
return [self listSevenZipContents:lines];
}
//------------------------------------------------------------------------------
// creating archives
//------------------------------------------------------------------------------
+ (void)createArchive:(NSString *)archivePath withFiles:(NSArray *)filenames archiveType: (ArchiveType) archiveType
{
NSEnumerator *filenameCursor;
NSString *filename;
NSString *workdir;
NSMutableArray *arguments;
// make sure archivePath has the correct suffix
if ([archivePath hasSuffix:@".7z"] == NO)
{
archivePath = [archivePath stringByAppendingString:@".7z"];
}
// build arguments for commandline: 7z a filename <list of files>
arguments = [NSMutableArray array];
[arguments addObject:@"a"];
[arguments addObject:archivePath];
// filenames contains absolute paths, convert them to relative paths. This works
// because you can select only files/directories below a current directory in
// GWorkspace so all the files *have* to have a common filesystem root.
filenameCursor = [filenames objectEnumerator];
while ((filename = [filenameCursor nextObject]) != nil)
{
[arguments addObject:[filename lastPathComponent]];
}
// change into this directory when running the task
workdir = [[filenames objectAtIndex:0] stringByDeletingLastPathComponent];
[self runArchiverWithArguments:arguments inDirectory:workdir];
}
//------------------------------------------------------------------------------
// private API
//------------------------------------------------------------------------------
- (NSArray *)listSevenZipContents:(NSArray *)lines
{
NSEnumerator *cursor;
NSString *line;
NSMutableArray *results = [NSMutableArray array];
cursor = [lines objectEnumerator];
while ((line = [cursor nextObject]) != nil)
{
int length;
NSString *path, *date, *time, *attributes;
NSCalendarDate *calendarDate;
FileInfo *info;
NSArray *components;
if ([line length] == 0)
{
continue;
}
components = [line componentsSeparatedByString:@" "];
components = [components arrayByRemovingEmptyStrings];
// directly skip directory entries. Fortunately, 7zip displays attributes for each file
attributes = [components objectAtIndex:2];
if ([attributes characterAtIndex:0] == 'D')
{
continue;
}
length = [[components objectAtIndex:3] intValue];
// extract the path, it's always the last element
path = [[components lastObject] stringByRemovingWhitespaceFromBeginning];
date = [components objectAtIndex:0];
time = [components objectAtIndex:1];
date = [NSString stringWithFormat:@"%@ %@", date, time];
calendarDate = [NSCalendarDate dateWithString:date calendarFormat:@"%Y-%m-%d %H:%M:%S"];
info = [FileInfo newWithPath:path date:calendarDate
size:[NSNumber numberWithInt:length]];
[results addObject:info];
}
return results;
}
- (NSData *)dataByRunningSevenZip
{
// l = list
NSArray *args = [NSArray arrayWithObjects:@"l", @"--", [self path], nil];
return [self dataByRunningUnachiverWithArguments:args];
}
@end
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