/* I<!,_$:
**SiteFileFetch.java T)mh
*/ |vY|jaV}
package NetFox; :u|F>e
import java.io.*; q8H9au&/
import java.net.*; hx
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public class SiteFileFetch extends Thread { Rf TG
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SiteInfoBean siteInfoBean = null; //文件信息Bean PJ2m4ulY
long[] nStartPos; //开始位置 7-MyiCt
long[] nEndPos; //结束位置 kk ZMoK
FileSplitterFetch[] fileSplitterFetch; //子线程对象 bYwe/sR
long nFileLength; //文件长度 3Y=uBl
boolean bFirst = true; //是否第一次取文件 (|sqN8SbA
boolean bStop = false; //停止标志 9M7Wlx2
File tmpFile; //文件下载的临时信息 /_i]bM7W
DataOutputStream output; //输出到文件的输出流 4IXa[xAm
$: qrh66
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) lB(P+yY,/'
public SiteFileFetch(SiteInfoBean bean) throws IOException ;fB!/u
{ w"AO~LF
siteInfoBean = bean; v<E_n;@9k
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ZmZ7E]c
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); r?}L^bK
if(tmpFile.exists ()) [-2Tj)P
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{ UQ~gjnb[c
bFirst = false; 3$PGLM
read_nPos(); pXf5/u8&
} H;Gd
else bix}#M
{ SOeRQb'
nStartPos = new long[bean.getNSplitter()]; ZqfoO!Ta
nEndPos = new long[bean.getNSplitter()]; (5>IF,}!L
} 28O 3N;a
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} /,3:<I
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public void run() 2fG[q3`
{ zqm/<]A*l
//获得文件长度 ;c|G
//分割文件 <v$yXA
//实例FileSplitterFetch q@}tv=}
//启动FileSplitterFetch线程 GtkZ%<KF9
//等待子线程返回 J4jL%5t
try{ s`o_ER
if(bFirst) =:Lc-y >
{ 6Lz:J:Q)
nFileLength = getFileSize(); ::!{f+Up
if(nFileLength == -1) &u0on)E
{ s3oQ( wC %
System.err.println("File Length is not known!"); g/OL^A
} *
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else if(nFileLength == -2) 89[OaT_hs
{ g BV66L
System.err.println("File is not access!"); 7r$'2">K(
} <26Jif:
else q[TW
{ ef]60OtP
for(int i=0;i<nStartPos.length;i++) .h\[7r
{ d5 U+]g
nStartPos = (long)(i*(nFileLength/nStartPos.length)); ?o_D#gG*
} ,{sCI/
for(int i=0;i<nEndPos.length-1;i++) CChCxB
{ *"sDsXo- I
nEndPos = nStartPos[i+1]; ="s>lI-1a
} YHI@Cj
nEndPos[nEndPos.length-1] = nFileLength; pLsJa?}R
} @H|3e@5([
} }+BbwBm&
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//启动子线程 9+co`t.
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ZvkBF9d
for(int i=0;i<nStartPos.length;i++) {WN??eys,
{ wj|[a,(r
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), >UBozmF=\
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), _rfGn,@BH
nStartPos,nEndPos,i); 2qDVAq^@
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ( 2i{8
fileSplitterFetch.start(); Y1L7s H 9
} 0 A6%!h
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 7A4_b8
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); K5:>
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", .u&GbM%Ga
nEndPos = " + nFileLength); [TX5O\g![
// fileSplitterFetch[nPos.length-1].start(); /PgcW
^:,I #]
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//等待子线程结束 T|ZJ$E0
//int count = 0; o7t#yw3
//是否结束while循环 }XIUz|
boolean breakWhile = false; ^3w
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while(!bStop) Hy#<fKz`!
{ P> ilRb
write_nPos(); .dl4f"k
Utility.sleep(500); `Y.Q{5Y
breakWhile = true; ~"i4"Op&
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for(int i=0;i<nStartPos.length;i++) F;<cG`|Rx
{ 4%,E;fB?=
if(!fileSplitterFetch.bDownOver) ~+bS D<!b
{ P |kfPohI=
breakWhile = false; nZ~J&QK-
break; >e9xM Gv
} gukKa
} 4: S-
if(breakWhile) a29rD$
break; +G[N
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//count++; 6@cT;=W;xj
//if(count>4) Zh3hCxXa
// siteStop(); }pL#C
} a^.5cJ$]
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System.err.println("文件下载结束!"); ~t.M!vk
} 7&{[Y^R]"
catch(Exception e){e.printStackTrace ();} D+69U[P_A
} 8^av&u$
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//获得文件长度 A]q"+Z]
public long getFileSize() "`aLSw75x
{ R[{s\
int nFileLength = -1; (| X?
try{ tP]-u3
URL url = new URL(siteInfoBean.getSSiteURL()); R[_UbN 28
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); >(39K
httpConnection.setRequestProperty("User-Agent","NetFox"); QzX|c&&>u2
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int responseCode=httpConnection.getResponseCode(); )%=oJ!)
if(responseCode>=400) Q
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{ 4l`"P~=2<
processErrorCode(responseCode); .Pi8c[
return -2; //-2 represent access is error k\`~v$R3
} "L~qsFL
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String sHeader; F)^:WWVc#
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for(int i=1;;i++) ew{(@p+$
{ B0#JX
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//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); (2fWJ% 7VG
//Utility.log(in.readLine()); Rw#4 |&
sHeader=httpConnection.getHeaderFieldKey(i); c2d=dGP>~f
if(sHeader!=null) Hj^_Cp]@*
{ y7WO:X&
if(sHeader.equals("Content-Length")) Aq:1
{ `UDB9Ca
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); D4e!A@LJ
break; <u%&@G$F>
} 5
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} _"R /k`8
else A6#5 z
break; 1Xj>kE:
} ^ ;XJG9a0\
} ?7"6dp_K
catch(IOException e){e.printStackTrace ();} =w <;tb
catch(Exception e){e.printStackTrace ();} sGs_w:Hn
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Utility.log(nFileLength); | Xv]s61
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return nFileLength; c1L0#L/F6"
} %
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//保存下载信息(文件指针位置) smTPca)7s
private void write_nPos() hxQx$
{ JXA!l?%
try{ !<2%N3l
output = new DataOutputStream(new FileOutputStream(tmpFile)); Mp`2[S@$
output.writeInt(nStartPos.length); TowRY=#jiS
for(int i=0;i<nStartPos.length;i++) ! >l)*jN8
{ V$';B=M
// output.writeLong(nPos); ir/-zp_
output.writeLong(fileSplitterFetch.nStartPos); s8
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output.writeLong(fileSplitterFetch.nEndPos); WY 'QhieH
} F.[E;gOTo
output.close(); q"O4}4`
} zEYT,l
catch(IOException e){e.printStackTrace ();} mxQPOu
catch(Exception e){e.printStackTrace ();} >^5UXQr
} Bc^MZ~+ip
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//读取保存的下载信息(文件指针位置) i{+W62k*
private void read_nPos() Sdn4y(&TP
{ Td"_To@jd
try{ "cVJqW
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); K~DQUmU@
int nCount = input.readInt(); 7g&"clRGO
nStartPos = new long[nCount]; oP CtLz}z
nEndPos = new long[nCount]; x'IYWo
]
for(int i=0;i<nStartPos.length;i++) (_aM26s
{ gJUawK
nStartPos = input.readLong();
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nEndPos = input.readLong(); *[SOz)
} [x\?._>
input.close(); ,KyG^;Riy
} :G\X
catch(IOException e){e.printStackTrace ();} K.T.?ug;:
catch(Exception e){e.printStackTrace ();} GjD^\d/
} i
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private void processErrorCode(int nErrorCode) DN%b!K:
{ pni*#W*n
System.err.println("Error Code : " + nErrorCode); @W+m;4 HH
} /3`(Ki{
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//停止文件下载 v3q.,I_
public void siteStop() nS5g!GYY,k
{ b|KlWt'
bStop = true; f0d*%
for(int i=0;i<nStartPos.length;i++) }mx>3G{d
fileSplitterFetch.splitterStop(); p|f5w"QcH
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} &}q;,"
} 6*uWRjt
//负责部分文件的抓取 e"@Ag:r@a
**FileSplitterFetch.java xP61^*-2
*/ $9%UAqk9
package NetFox; @cC@(M~Ru
9H6%\#rw
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import java.io.*; {/E_l
import java.net.*; CqkY_z
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public class FileSplitterFetch extends Thread { .WV5Gf)
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String sURL; //File URL [d^ [Y:I'\
long nStartPos; //File Snippet Start Position \lBY4j+;
long nEndPos; //File Snippet End Position ]XS[\qo
int nThreadID; //Thread's ID 3UX/
boolean bDownOver = false; //Downing is over 4?2$~\
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boolean bStop = false; //Stop identical }3DZ`8u
FileAccessI fileAccessI = null; //File Access interface abgAUg)
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException s-"oT=
{ (l]_0-Z
this.sURL = sURL; zS<idy F`
this.nStartPos = nStart; px>g
this.nEndPos = nEnd; #x|IEjoa
nThreadID = id; 7~2c"WE
fileAccessI = new FileAccessI(sName,nStartPos);//定位 E-?@9!2
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} ~qu}<u)P
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public void run() A/A;'9
{ +{dJGPoY]p
while(nStartPos < nEndPos && !bStop) T_NN.Ol
{ qvN`46c
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try{ k0^t$J
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URL url = new URL(sURL); P3op1/Np
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); +F@ZVMp
httpConnection.setRequestProperty("User-Agent","NetFox"); I/`\>Hk
String sProperty = "bytes="+nStartPos+"-"; *ud/'HR8]
httpConnection.setRequestProperty("RANGE",sProperty); t8_i[Hw6D
Utility.log(sProperty); )~LqBh
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InputStream input = httpConnection.getInputStream(); t[=teB v<
//logResponseHead(httpConnection); %SKJ#b
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byte[] b = new byte[1024]; l1uv]t <
int nRead; H5X.CcI&}
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) r
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{ "IuPg=|#
nStartPos += fileAccessI.write(b,0,nRead); 8d|#W
//if(nThreadID == 1) +txHj(Y`
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); U%u%_{-
} Q35jJQ$<`
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Utility.log("Thread " + nThreadID + " is over!"); )gPkL
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bDownOver = true; m!LJK`gA
//nPos = fileAccessI.write (b,0,nRead); :vo#(
} C
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catch(Exception e){e.printStackTrace ();} Ds@nuQ
} qx2M"uFJ
} ?
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//打印回应的头信息 /&!4oBna
public void logResponseHead(HttpURLConnection con) 6)j/"9oY
{ qfS
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for(int i=1;;i++) *)xjMTJ%
{ dQ`=CIr
String header=con.getHeaderFieldKey(i); (_Ky'.
if(header!=null) 1!p7N$QR
//responseHeaders.put(header,httpConnection.getHeaderField(header)); 4KnrQ-D
Utility.log(header+" : "+con.getHeaderField(header)); CEl9/"0s6
else j&w4yY
break; o|bm=&f
} FQqk+P!
} V PaW-o
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public void splitterStop() 6!$2nK+
{ bv9nDNPD4
bStop = true; JSu+/rI1
} z(
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} E9~}%&
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/* \Jm^XXgS
**FileAccess.java 0$:jZ/._
*//文件访问(定位,写) (pT7m
package NetFox; r9y(j
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import java.io.*; UtYwG#/w
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public class FileAccessI implements Serializable{ L,_Z:\^
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//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 )Nnrsa
RandomAccessFile oSavedFile; xjH({(/B>a
long nPos; H-/w8_} KG
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public FileAccessI() throws IOException ;Yu|LaI\<m
{ s~g0VNu Y
this("",0); R@A"U[*
} R>y/Y<5=
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public FileAccessI(String sName,long nPos) throws IOException Mi:i1i
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{ v18OUPPX
oSavedFile = new RandomAccessFile(sName,"rw"); qj1Fj
this.nPos = nPos; 1dl(`=^X
oSavedFile.seek(nPos); 9`T2
} qLa6c2o,
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public synchronized int write(byte[] b,int nStart,int nLen) I08W I u
{ u`Abko<D
int n = -1; u5rHQA0%
try{ \Y^GA;AMQQ
oSavedFile.write(b,nStart,nLen); "a=dx|
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n = nLen; 6S&OE k
} m,^UD{
catch(IOException e) X-j3=8wPM
{ @@"abhT
e.printStackTrace (); xM2UwTpW
} +~\ 1g^h
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return n; 6~tj"34_
} *_H^]wNJG
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} MwTouEGGgA
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/* |oX1J<LM
**SiteInfoBean.java o[B"J96b
*/ O~4Q:#^c
package NetFox; /0(c-Dv
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public class SiteInfoBean { -fT}Nj\
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private String sSiteURL; //Site's URL V#TNv0&0
private String sFilePath; //Saved File's Path Z7J4rTA
private String sFileName; //Saved File's Name Xz\ X 8I
private int nSplitter; //Count of Splited Downloading File pIl[)%F
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public SiteInfoBean() ]/{iIS_
{//nSplitter的缺省值为5 V@pUU~6R
//default value of nSplitter is 5 K:54`UJ
this("","","",5); v(~EO(n.
} o(eh.
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) Tl L\&n.$
{ j|%>NB ):
sSiteURL= sURL; 3,)[Q?nKD
sFilePath = sPath; q_z ;kCHM
sFileName = sName; 6[\1Nzy>
this.nSplitter = nSpiltter; =k##*%
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} 79Ur1-]/
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public String getSSiteURL() bwe)_<c
{ 9v?rNJs
return sSiteURL; }#phNn6
} R#4f_9e<Z
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public void setSSiteURL(String value) ]e(\<R6Gf
{ <$Djags,F
sSiteURL = value; kJpr:4;@_
} UL]zuW/
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public String getSFilePath() bJ^Jmb
{ lu;gmWz
return sFilePath; *3rp
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} N9 TM
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public void setSFilePath(String value) +2g}wH)l
{ SXx4^X
sFilePath = value; rm4t
} V(;c#%I2
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public String getSFileName() X3HJ3F;==
{ %J+k.UrM
return sFileName; 8^!ib/@v"
} 1pP q)}=+
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public void setSFileName(String value) EOXuc9>G
{ [~ !9t9+~
sFileName = value; W4"1H0s`l
} )!=fy']
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public int getNSplitter() J|CCTXT
{ 3{M0iNc1
return nSplitter; .p%V]Ka
} O)c3Lm-w
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public void setNSplitter(int nCount) f('##pND@
{ BO0Y#fs
nSplitter = nCount; K0Lc~n/
} `d4;T|f+=
} MbeK{8~E%l
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/* vdd>\r)v
**Utility.java [a7S?%>Bh
*/ j43i:c;F
package NetFox; rh T!8dTk
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public class Utility { #M<u^$Jz
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public Utility() k#G+<7c<
{ *~^%s+b
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} :3D[~-/S
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//线程睡眠 Si68_]:^
public static void sleep(int nSecond) n/^QPR$>.
{ A_+*b
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try{ R)Dh; XA
Thread.sleep(nSecond); o<rbC <
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} !L)yI#i4C
catch(Exception e) `+(4t4@ew
{ 7e
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e.printStackTrace (); VM+l9z>
} }]. |7h
} 0G3T.4I
EGjzjuJu{
//日志 AjINO}b
public static void log(String sMsg) !X 0 (4^
{ zKGr(9I
System.err.println(sMsg); Kr%`L/%
} ).jna`A,
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public static void log(int sMsg) :-~x~ah-
{ y2Vc[o(NP
System.err.println(sMsg); Fl++rUT
} p<&d