home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Unix System Administration Handbook 1997 October
/
usah_oct97.iso
/
news
/
cnews.tar
/
readnews
/
active.c
next >
Wrap
C/C++ Source or Header
|
1990-11-19
|
2KB
|
95 lines
/*
* active file handling routines
*
* format of file:
* <groupname> ' ' <#> ' ' <#> ' ' flag '\n'
* (seq) (low)
*/
#include "defs.h"
static int lineno;
static active *alist;
static
getline(f, g, d, d2)
register FILE *f;
char *g, *d, *d2;
{
register int c;
register char *s;
lineno++;
s = g;
while ((c = getc(f)) != ' ' && c != EOF)
*s++ = c;
*s = '\0';
if (c != EOF) {
s = d;
while ((c = getc(f)) != EOF && isdigit(c))
*s++ = c;
*s = '\0';
s = d2;
if (c == ' ')
while ((c = getc(f)) != EOF && isdigit(c))
*s++ = c;
*s = '\0';
if (c == ' ')
while ((c = getc(f)) != EOF && c != '\n')
; /* eat flag */
}
if (c != EOF && (c != '\n' || !*d || !*d2))
error("%s: bad format: line %d", "active", lineno);
return c != EOF;
}
/*
* build internal active file structure
*/
active *
readactive()
{
register FILE *f;
register active *ap, *last;
char gbuf[BUFSIZ / 2], dbuf[BUFSIZ / 4], dbuf2[BUFSIZ / 4];
alist = last = NULL;
f = fopenf(ctlfile("active"), "r");
lineno = 0;
while (getline(f, gbuf, dbuf, dbuf2)) {
ap = NEW(active);
ap->a_name = newstr(gbuf);
ap->a_seq = atol(dbuf);
ap->a_low = atol(dbuf2);
ap->a_next = NULL;
if (!alist)
alist = ap;
else
last->a_next = ap;
last = ap;
}
fclose(f);
return alist;
}
/*
* return pointer to named group
*/
active *
activep(grp)
register char *grp;
{
register active *ap;
for (ap = alist; ap; ap = ap->a_next)
if (CMP(grp, ap->a_name) == 0)
break;
return ap;
}