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#import <Foundation/Foundation.h>
#import "LhaArchive.h"
#import "FileInfo.h"
#import "NSString+Custom.h"
#import "Preferences.h"
#import "NSArray+Custom.h"
@interface LhaArchive (PrivateAPI)
- (NSData *)dataByRunningLha;
@end
@implementation LhaArchive : Archive
/**
* register our supported file extensions with our superclass.
*/
+ (void)initialize
{
[self registerFileExtension:@"lha" forArchiveClass:self];
}
+ (NSString *)archiveExecutable
{
return [Preferences lhaExecutable];
}
+ (NSString *)unarchiveExecutable
{
return [Preferences lhaExecutable];
}
/**
* lha archives <em>do</em> contain info about compression ratio.
*/
+ (BOOL)hasRatio;
{
return YES;
}
+ (ArchiveType)archiveType
{
return LHA;
}
//------------------------------------------------------------------------------
// expanding the archive
//------------------------------------------------------------------------------
- (int)expandFiles:(NSArray *)files withPathInfo:(BOOL)usePathInfo toPath:(NSString *)path
{
FileInfo *fileInfo;
NSMutableArray *args;
NSString *argString;
argString = @"e";
if (usePathInfo == NO)
{
argString = [argString stringByAppendingString:@"i"];
}
// destination dir
argString = [argString stringByAppendingString:@"w="];
argString = [argString stringByAppendingString:path];
args = [NSMutableArray array];
[args addObject:argString];
// 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]];
}
}
return [self runUnarchiverWithArguments:args];
}
- (NSArray *)listContents
{
NSEnumerator *cursor;
NSString *line;
NSMutableArray *results = [NSMutableArray array];
NSData *data = [self dataByRunningLha];
NSString *string = [[[NSString alloc] initWithData:data
encoding:NSASCIIStringEncoding] autorelease];
NSArray *lines = [string componentsSeparatedByString:@"\n"];
// take out first 2 lines (header) and last 2 lines (footer)
lines = [lines subarrayWithRange:NSMakeRange(2, [lines count] - 2)];
lines = [lines subarrayWithRange:NSMakeRange(0, [lines count] - 3)];
cursor = [lines objectEnumerator];
while ((line = [cursor nextObject]) != nil)
{
NSArray *components;
int length;
NSString *path, *ratio, *month, *day, *year, *dateString;
NSCalendarDate *date;
FileInfo *info;
if ([line hasSuffix:@"/"])
{
// skip directory entries
continue;
}
components = [line componentsSeparatedByString:@" "];
components = [components arrayByRemovingEmptyStrings];
length = [[components objectAtIndex:3] intValue];
path = [components objectAtIndex:10];
ratio = [components objectAtIndex:4];
month = [components objectAtIndex:7];
day = [components objectAtIndex:8];
year = [components objectAtIndex:9];
dateString = [NSString stringWithFormat:@"%@ %@ %@", month, day, year];
date = [NSCalendarDate dateWithString:dateString calendarFormat:@"%b %d %Y"];
info = [FileInfo newWithPath:path date:date size:[NSNumber numberWithInt:length]
ratio:ratio];
[results addObject:info];
}
return results;
}
//------------------------------------------------------------------------------
// 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:@".lha"] == NO)
{
archivePath = [archivePath stringByAppendingString:@".lha"];
}
// build arguments for commandline: lha 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
//------------------------------------------------------------------------------
- (NSData *)dataByRunningLha
{
NSData *data;
NSArray *args = [NSArray arrayWithObjects:@"v", @"--", [self path], nil];
data = [self dataByRunningUnachiverWithArguments:args];
return data;
}
@end
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