iPhone在线音乐盒，代码开源

/* Function For 百度 mp3 搜索模块 */
/*
请求百度mp3搜索页面获得歌曲信息数组
by BinJian.Wong on Sleeplez.com
update on 2010.2.1
mykeyWords = 关键字
pageNavi = 歌曲条目从pageNavi起
*/
+(NSArray*) KeyWordsForSongs:(NSString*)myKeyWords pageNavi:(int)myPageNavi;
/*
解密百度mp3链接加密算法
by BinJian.Wong on Sleeplez.com
update on 2010.2.1
myEncodeURL = 经过加密的链接
*/
+(NSString*) decodeBaiduURL:(NSString *)myEncodeURL;
/*
从百度下载页面中获得经过加密的下载链接
by BinJian.Wong on Sleeplez.com
update on 2010.2.1
myDownpage = 下载页面的链接地址
*/
+(NSString*) DownPageURLToMusicFileURL:(NSString *)myDownpage;

// .m

[/pre]+(NSArray*) KeyWordsForSongs:(NSString*)myKeyWords pageNavi:(int)myPageNavi{
    int pageNavi = myPageNavi; //页码
    NSString * keyWords = myKeyWords; //关键字
    //NSString * keyWords = @"张信哲";
    //创建字符串
    NSString * myURL = [NSString stringWithFormat:@"http://mp3.baidu.com/m?f=ms&rf=idx&tn=baidump3&ct=134217728&lf=&rn=&word=%@&lm=0&pn=%d",keyWords,pageNavi];
    //UTF8 to gb2312
    myURL = [myURL stringByAddingPercentEscapesUsingEncoding:CFStringConvertEncodingToNSStringEncoding(kCFStringEncodingGB_18030_2000)];
    NSLog(@"%@",myURL);
 
    ASIHTTPRequest *myRequest = [[[ASIHTTPRequest alloc] initWithURL:[NSURL URLWithString:myURL]] autorelease];
    [myRequest startSynchronous];
 
 
    //如果发生错误，返回nil
    if ([myRequest error]) return nil;
 
    //返回数组定义
    NSMutableArray * mySongs = [NSMutableArray arrayWithCapacity:15];
 
    //编码转换 gb2313 to UTF
    NSData * myResponseData = [myRequest responseData];
    NSStringEncoding enc = CFStringConvertEncodingToNSStringEncoding (kCFStringEncodingGB_18030_2000);
    NSString * myResponseStr = [[NSString alloc] initWithData:myResponseData encoding:enc];
 
    //NSLog(@"html=%@",myResponseStr);
 
    //如果百度告诉我没有找到？
    NSRange myRange;
    myRange = [myResponseStr rangeOfString:@"抱歉，没有找到与"];
    if (myRange.location != NSNotFound) {
        return nil;
    };
 
    //将 源代码按 ” <td class=d><a href= “ 切割
    NSMutableArray * myResponseArrForSinger = (NSMutableArray *)[myResponseStr componentsSeparatedByString:@"<td class=d><a href="];
    //去头去尾
    if ([myResponseArrForSinger count]>=2) {
        [myResponseArrForSinger removeObjectAtIndex:0];
        [myResponseArrForSinger removeObjectAtIndex:[myResponseArrForSinger count]-1];
    }
 
    //按段处理
    for (int i=0; i<[myResponseArrForSinger count]; i++) {
        //
        @try {
 
            //把段按 “ .html" target="_blank"> ” 切割
            NSMutableArray *

mySubArr = (NSMutableArray *)[[myResponseArrForSinger objectAtIndex:i] componentsSeparatedByString:@".html" target="_blank">"];
 
            //处理歌曲下载页面的URL
            NSArray * myURLTmpArr = [[mySubArr objectAtIndex:0] componentsSeparatedByString:@"" title="请点击左键！来源网址：  "];
            myURLTmpArr = [[mySubArr objectAtIndex:0] componentsSeparatedByString:@"""];
 
            NSMutableString * SongsURL = [myURLTmpArr objectAtIndex:1];
            //[SongsURL stringByAddingPercentEscapesUsingEncoding:enc];
 
            //NSLog(@"url= %@",SongsURL);
 
            for (int j=0; j<[mySubArr count]; j++) {
                NSLog(@"%d= %@",j,[mySubArr objectAtIndex:j]);
            }
 
 
            //如果只有一段，表示 无 歌手名 和 专辑名
            //if ([mySubArr count]<=1) {
 
 
            //NSLog()
            //常量定义 段的意义
            const int Const_Songs = 0;
            const int Const_Singer = 1;
            const int Const_Album = 4;
            //变量定义
            NSMutableString * SongsName = (NSMutableString*)@"";
            NSString * SongsSinger = @"";
            NSString * SongsAlbum = @"";
            NSString * SongsSpeed = @"";
            NSString * SongsSize = @"";
 
            //处理 歌曲大小
            NSMutableArray * mySizeArr = (NSMutableArray*)[[mySubArr objectAtIndex:([mySubArr count]-1)] componentsSeparatedByString:@"<td>"];
            if ([mySizeArr count]>=2) {
                SongsSize = [mySizeArr objectAtIndex:([mySizeArr count]-2)];
                NSLog(@"size = %@",SongsSize);
            };
 
            //处理 歌曲链接速度图片
            @try {
 
                if ([mySubArr count]>=3) {
                    if ([mySubArr objectAtIndex:([mySubArr count]-1)]!=nil) {
 
                        NSMutableArray * mySpeedArr = (NSMutableArray*)[[mySubArr objectAtIndex:([mySubArr count]-1)]    componentsSeparatedByString:@"<td class=spd><img src="http://img.baidu.com/img/mp3/"];
 
                        if ([mySpeedArr count]>0)
                            if ([mySpeedArr objectAtIndex:1]!=nil)
                                mySpeedArr = (NSMutableArray *)[[mySpeedArr objectAtIndex:1]    componentsSeparatedByString:@""></td>"];
 
                        if ([mySpeedArr objectAtIndex:0]!=nil)
                            SongsSpeed = [mySpeedArr objectAtIndex:0];
 
                        NSLog(@"test speed = %@",SongsSpeed);
                    }
                };
 
            }
            @catch (NSException * e) {
                //none
            }
            @finally {
                //none
            }
 
            //处理 歌曲名
            NSMutableArray * myTmpArr = (NSMutableArray *)[[mySubArr objectAtIndex:Const_Songs] componentsSeparatedByString:@""return ow(event,this)"  target="_blank">"];
            myTmpArr = (NSMutableArray *)[[myTmpArr objectAtIndex:1] componentsSeparatedByString:@"</a></td>"];
            SongsName = [myTmpArr objectAtIndex:0];
            NSString * mySubStr;
 
            //处理 歌手名
            if ([mySubArr count]>1) {
                mySubStr = [mySubArr objectAtIndex:Const_Singer];
                SongsSinger = mySubStr;
            };
 
            //处理 专辑名
            if ([mySubArr count]>=5) {
                mySubStr = [mySubArr objectAtIndex:Const_Album];
                NSMutableArray * mySubSubArr = (NSMutableArray *)[mySubStr componentsSeparatedByString:@"</a>"];
                mySubStr = [mySubSubArr objectAtIndex:0];
                SongsAlbum = mySubStr;
 
            } else {
                SongsAlbum = @"";
            };
 
            //处理: 歌曲名中如果包含歌词
            NSMutableString *tmp = [NSMutableString stringWithString:SongsName];
            NSRange range = [tmp rangeOfString:@"<br><font color="#999999" class=f10>"];
            if (range.location != NSNotFound) {
                range.length = SongsName.length - range.location;
                //NSLog(@"%d !",range.length);
                [tmp deleteCharactersInRange:range];
                //NSLog(@"test =%@",tmp);
                SongsName = tmp;
            }
            //[tmp release];
 
            //NSLog(@"t= %@, %@ , %@",SongsName,SongsSinger,SongsAlbum);
 
            //好，现在开始发春了！
            NSString * FinalStr = [[[NSString alloc] initWithFormat:@"<头>%@<分割>%@<分 割>%@<分割>%@<分割>%@<分割>%@",
                                    SongsName,SongsSinger,SongsAlbum,SongsURL,SongsSpeed,SongsSize] autorelease];
            FinalStr = [FinalStr stringByReplacingOccurrencesOfString:@"<font color="#c60a00">" withString:@""];

          FinalStr = [FinalStr stringByReplacingOccurrencesOfString:@"</font>" withString:@""];
            FinalStr = [FinalStr stringByReplacingOccurrencesOfString:@"</a>" withString:@""];
            FinalStr = [FinalStr stringByReplacingOccurrencesOfString:@"<a href="http://mp3.baidu.com/singerlist/" withString:@""];
            FinalStr = [FinalStr stringByReplacingOccurrencesOfString:@" " withString:@""];
            FinalStr = [FinalStr stringByReplacingOccurrencesOfString:@"\'" withString:@"\'"];
            FinalStr = [FinalStr stringByReplacingOccurrencesOfString:@"<头>  " withString:@"<头>"];
            FinalStr = [FinalStr stringByReplacingOccurrencesOfString:@"<头>" withString:@""];
            FinalStr = [FinalStr stringByReplacingOccurrencesOfString:@"&" withString:@"&"];
            FinalStr = [FinalStr stringByReplacingOccurrencesOfString:@"</td>" withString:@""];
            FinalStr = [FinalStr stringByReplacingPercentEscapesUsingEncoding:enc];
 
            //if ([SongsURL hasSuffix:@"3"]) {
            [mySongs addObject:FinalStr];
            //};
            //]
        }
        @catch (NSException * e) {
            //    没有错误处理， 发生错误就直接丢掉
        }
        @finally {
            //    none
        }
 
    };
 
    [myResponseStr release];
 
    return (NSArray *)mySongs;
 
}
 
 
+(NSString*)decodeBaiduURL:(NSString*)myEncodeURL{
    //我没学过c，没学过c，没学过c，写的太臃肿，太sb了，别骂我呀。
 
    NSString * returnURL = [[[NSString alloc] initWithFormat:@""] autorelease];
    //char *myCEncodeURL =  [myEncodeURL cStringcStringWithEncoding:NSASCIIStringEncoding];
    NSLog(@"input %@",myEncodeURL);
    //字串
    static NSString * myConst = @"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
    int pyl ; // 偏移量
    //NSRange myRange = [myEncodeURL rangeOfString:@":"]; //定位 协议标识符
    UniChar myUniChr = [myEncodeURL characterAtIndex:0]; //取出第一字符
    //转换类型
    NSString * myChrAsStr = [[[NSString alloc] initWithFormat:@"%C",myUniChr] autorelease];
    //确定第一字符在字串中的位置
    NSRange myRange2 = [myConst rangeOfString:myChrAsStr];
    int myFirstChrLocation = myRange2.location;
 
    //计算偏移量
    pyl = myFirstChrLocation - 33 ;
    // 33 means "h" \'s location .
 
    NSLog(@"len = %d",myEncodeURL.length);
    //还原字串
    //NSLog(@"pyl = %d",pyl);
    for (int i=0; i<[myEncodeURL length]; i++) {
        UniChar myTmpChr= [myEncodeURL characterAtIndex:i];
        NSString * myTmpChrAsStr = [[[NSString alloc] initWithFormat:@"%C",myTmpChr] autorelease];
        NSRange myTmpRange = [myConst rangeOfString: myTmpChrAsStr] ;
        if (myTmpRange.location != NSNotFound) {
            int newChrAsInt = myTmpRange.location - pyl;
            //NSLog(@"pyl = %d , oldchr = %C , oldcount = %d, newcount = %d",pyl,myTmpChr,
            //hai              myTmpRange.location,newChrAsInt);            
            if (newChrAsInt<0) {
                newChrAsInt = newChrAsInt + 62;
                //NSLog(@"%d",newChrAsInt);
            } else {
                if (newChrAsInt>62) {
                    newChrAsInt = newChrAsInt % 62;
                };
            }
            ///    NSLog(@"! pyl = %d , oldchr = %C , oldcount = %d, newcount = %d",pyl,myTmpChr,
            //  myTmpRange.location,newChrAsInt);        
            myTmpChr = [myConst characterAtIndex:newChrAsInt];
        };
        //NSLog(@"%C",myTmpChr);
        returnURL= [returnURL stringByAppendingFormat:@"%C",myTmpChr];
    }
 
    returnURL= [returnURL stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
 
    NSLog(@"output %@",returnURL);
    return returnURL;
 
}
 
+(NSString*)DownPageURLToMusicFileURL:(NSString*)myDownpage{
    NSURL * myURL = [NSURL URLWithString:myDownpage];
 
    ASIHTTPRequest * myRequest = [[[ASIHTTPRequest alloc] initWithURL:myURL] autorelease];
    [myRequest startSynchronous];
 
 
    NSData * myResponseData = [myRequest responseData];
    NSStringEncoding enc = CFStringConvertEncodingToNSStringEncoding (kCFStringEncodingGB_18030_2000);
    NSString * myResponseStr = [[NSString alloc] initWithData:myResponseData encoding:enc];
 
    //NSLog(@"resstr= %@", myResponseStr);
 
    NSArray *myArr = [myResponseStr componentsSeparatedByString:@"var encurl = ""];
 
    myArr = [[myArr objectAtIndex:1] componentsSeparatedByString:@"", newurl = "";"];
 
    [myResponseStr release];
 
    return [self decodeBaiduURL:[myArr objectAtIndex:0]];

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