MUtility

MUtiliity.m

//
//  MUtility.m
//  Magazine
//
//  Created by wang xuefeng on 10-12-9.
//  Copyright 2010 www.5yi.com. All rights reserved.
//

#import "MUtility.h"
#import "MFoundation.h"
#import "ZipArchive/ZipArchive.h" 

@implementation MUtility


+ (UIColor *)randomColor
{
	static BOOL seeded = NO;
	if (!seeded) {
		seeded = YES;
		srandom(time(NULL));
	}
	CGFloat red =  (CGFloat)random()/(CGFloat)RAND_MAX;
	CGFloat blue = (CGFloat)random()/(CGFloat)RAND_MAX;
	CGFloat green = (CGFloat)random()/(CGFloat)RAND_MAX;
	return [UIColor colorWithRed:red green:green blue:blue alpha:1.0f];
}


+ (CGFloat)getStringHeight:(NSString *)string font:(UIFont *)font withMaxSize:(CGSize)maxSize 
{
	CGSize size = [string sizeWithFont:font constrainedToSize:maxSize lineBreakMode:UILineBreakModeWordWrap];
	return size.height;
}

+ (NSString *)documentPathForFile:(NSString *)fileName
{
	//NSLog(@"documents: %@",NSHomeDirectory());
	return [NSHomeDirectory() stringByAppendingPathComponent:[NSString stringWithFormat:@"Documents/%@",fileName]];
}


+ (NSMutableArray *) getDataArrayFromFile:(NSString *)fileName
{
	NSString *filePath = [MUtility documentPathForFile:fileName];
	NSFileManager *fileManager = [NSFileManager defaultManager];
	if (![fileManager fileExistsAtPath:filePath]) {
		NSMutableArray *initArray = [[[NSMutableArray alloc] initWithCapacity:0] autorelease];
		[initArray writeToFile:filePath atomically:YES];
	}
	
	return [[NSMutableArray alloc] initWithContentsOfFile:filePath];
}


+ (void)saveToLibraryWithData:(NSDictionary *)dict 
{
	NSString *filePath = [MUtility documentPathForFile:@"library.plist"];
	NSFileManager *fileManager = [NSFileManager defaultManager];
	NSMutableArray *dataArray;
	if (![fileManager fileExistsAtPath:filePath]) {
		dataArray = [[NSMutableArray alloc] initWithCapacity:0];
	} else {
		dataArray = [[NSMutableArray alloc] initWithContentsOfFile:filePath];
	}
	
	NSString *book_id = [NSString stringWithFormat:@"%d",[[dict objectForKey:@"id"] intValue]];
	NSString *magazine_id = [NSString stringWithFormat:@"%d",[[dict objectForKey:@"magazine_id"] intValue]];
	NSString *book_title = [NSString stringWithFormat:@"%@",[dict objectForKey:@"name"]];
	NSString *book_cover = [NSString stringWithFormat:@"cover.png"];
	NSString *book_catalog = [NSString stringWithFormat:@"catalog.plist"];
	NSString *book_directory = [NSString stringWithFormat:@"book1%d",[[dict objectForKey:@"id"] intValue]];
	NSMutableDictionary *dictionary = [[NSMutableDictionary alloc] initWithObjectsAndKeys:
									   book_id,@"book_id",
									   magazine_id,@"magazine_id",
									   book_title,@"book_title",
									   book_cover,@"book_cover",
									   book_catalog,@"book_catalog",
									   book_directory,@"book_directory",nil];
	[dataArray addObject:dictionary];	
	[dataArray writeToFile:filePath atomically:YES];
	[dataArray release];	
}

+ (void)unzipFileWithItem:(NSDictionary *)item
{
	// .../Documents/book.zip
	NSString *zipFilePath = [MUtility documentPathForFile:[item objectForKey:@"zip_name"]];
	// .../Documents/book
	NSString *zipFileDirectory = [MUtility documentPathForFile:[item objectForKey:@"directory_name"]];
	// uncompress 
	ZipArchive* zipFile = [[ZipArchive alloc] init];
	[zipFile UnzipOpenFile:zipFilePath];
	[zipFile UnzipFileTo:zipFileDirectory overWrite:YES];
	[zipFile UnzipCloseFile];
	[zipFile release];	
}

@end