Hi,
The code in JAVA is as following:
************************************************
import java.lang.* ;
import java.io.* ;
public class PolicyServer { //: main class
public static void main (String [] args ) {
byte buf[]= new byte[64];
int i;
int linecounter=0;
String s[]= new String[20];
String s1=new String();
try {
DataInputStream in = new DataInputStream(new
BufferedInputStream(new FileInputStream("test.txt")));
while((s1=in.readLine()) !=null){ // EOF
if (s1.charAt(0)!='#') { // not a comment
or NULL line
s[linecounter]=s1;
linecounter++;
}//end of if
} // end while
}//try;
catch (Exception e) {
System.out.println("Error: "+ e.toString());
}////end try-catch;
for (i=0; i<linecounter; i++)
System.out.println("s[" + i +"]="+s[i]);
} // main();
}//: end of PolicyServer
************************************************************
The code in C is as following:
/***************************************/
void trim_comment(char *buf, int len)
{
int i;
for ( i=0; i<len+1 && buf[i]!='\0'; i++ )
{
if ( buf[i]=='#' )
{
buf[i]='\0';
return;
}
}
buf[i]='\0';
}
#define MAX_line_len 80
int main (int argc, char **argv)
{
/* testing functions */
struct LSA lsa;
FILE *in_file; /*input file */
char line[MAX_line_len];
const char *FILE_NAME="lsa.txt"; /* read/init from lsa.txt */
int i; /*index */
char router_id[20][20], links[2], link_id[20][20], hosts[2],
host_id[20][20];
if (argc!=2 || (argv[1][0]!='-' || argv[1][1]!='r'))
{
printf("Command is not correct! \n");
printf("Usage: LS -r --- to show you the LS
information\n");
return -1;
}
/*lsa=malloc(sizeof(struct LSA));*/
/* initialization -- read the lsa.txt in */
/* IO with file; to read ls_r.txt and display for user ***/
in_file=fopen(FILE_NAME, "r"); /*open the lsa_r.txt for read only
*/
if (in_file==NULL)
{
printf("Can't open %s\n", FILE_NAME);
return -2;
}
i=1;
/* ok, now we can read the file and show it for users */
while (fgets(line, MAX_line_len, in_file) != NULL)
{
/* trim comments */
trim_comment(line, MAX_line_len);
/*if( line[0]=='#' )
{
printf("comments\n");
continue;
}*/
/** comments **/
/* check whether it is a blank line or garbage line */
if (strlen(line) <=1) /*null line, garbage, etc */
{
continue;
}
printf("i=%d\n",i);
if (i==1) /* router_"id */
{
sscanf(line, "%s", router_id);
(lsa.ls_id)= (u_int32) router_id;
printf("DEBUG\n");
printf("The router_id =%s\n", (lsa.ls_id));
i++; /* next one will be link_numbers */
continue;
}
if (i==2) /* link_numbers */
{
sscanf(line, "%s", links);
(lsa.ls_links)=(u_int16) atoi(links);
printf("The link_number =%d\n", (lsa.ls_links));
i++; /* next one will be link_ids */
continue;
}
/* for link_id, 2<i< (lsa->ls_links + 2 +1) */
if ( i>2 && i<=(lsa.ls_links+2)) /* link_id */
{
sscanf(line, "%s",link_id[i-3]);
lsa.lnk_id[i-3]=(u_int32) link_id[i-3];
printf("The link_id[%d] is %s\n", i-3,
lsa.lnk_id[i-3]);
lsa.BW[i-3]=get_link_BW(i-3); /* DEBUG */
i++;
continue;
}
/* next will be host_numbers */
if (i == (2+1+lsa.ls_links)) /* host_numbers */
{
sscanf(line, "%s", hosts);
lsa.ls_hosts=(u_int16) atoi(hosts);
printf("The host_numbers =%d\n", lsa.ls_hosts);
i++; /* next one will be host_id */
continue;
}
/* The (2+1+1+lsa->ls_links) <= host_number
<(2+1+1+lsa->ls_links+ lsa->ls_hosts) */
if ( i>(3+lsa.ls_links) && i<=(lsa.ls_links+
lsa.ls_hosts+3)) /* link_id */
{
sscanf(line, "%s",host_id[i-4-lsa.ls_links]);
lsa.lnk_host_id[i-4-lsa.ls_links]=(u_int32)
host_id[i-4-lsa.ls_links];
printf("The link_host_id[%d] is %s\n",
i-4-lsa.ls_links, lsa.lnk_host_id[i-4-lsa.ls_links]);
/*for link_host, we don't need the info of BW */
i++;
continue;
}
} /*end of while loop */
printf("The route_id =%s \n", (lsa.ls_id));
printf("The link_number(router)=%d\n", lsa.ls_links);
printf("The link_number(host)=%d\n", lsa.ls_hosts);
for (i=0; i<lsa.ls_links; i++)
{
printf("link_router[%d]=%s\n", i, lsa.lnk_id[i]);
}
for (i=0; i<lsa.ls_hosts; i++)
{
printf("link_host[%d]=%s\n", i, lsa.lnk_host_id[i]);
}
/* show the LSA for me */
LSA_show_info(&lsa);
printf(" function test is successful !!!!\n");
return 0;
}
/************************************************************/
C.L.
On Wed, 7 Jul 1999, Matthias Pfisterer wrote:
> Please show us the code you used. That would make it much easier to
> understand your problem and to help you.
>
> Matthias Pfisterer
>
>
> Chien-Lung Wu wrote:
> >
> > Hi,
> > I try to read in a text file like follow,
> >
> > # comments
> > #
> > line1 with information
> > line2 (blank)
> > line3 with information
> > line4 (blank)
> > # comments
> > #comments
> >
> > I write my program in C and also try to use JAVA. One thing very
> > interesting is my program can read-in this text file line by line (ether
> > in C or in JAVA) if no any blank line. If I edit the text file with some
> > blank line, I ether can not trin this line out (in C) or I get a error
> > message " line out of range". How can I detect a blank line and trim it
> > out?
> >
> > Any suggestion will be appreciated. Thanks,
> >
> > C.L.
> >
> > ----------------------------------------------------------------------
> > To UNSUBSCRIBE, email to [EMAIL PROTECTED]
> > with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
>
****************************************************************************
Chien-Lung Wu [EMAIL PROTECTED]
Graduate Student of ECE (O) 919-513-1894
at North Carolina State University (H) 919-233-6724
****************************************************************************
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