home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
The C Users' Group Library 1994 August
/
wc-cdrom-cusersgrouplibrary-1994-08.iso
/
vol_100
/
187_01
/
c_just.c
< prev
next >
Wrap
C/C++ Source or Header
|
1985-12-30
|
2KB
|
49 lines
/*@*****************************************************/
/*@ */
/*@ c_just - center a string in a buffer to a given */
/*@ length. See r_just and l_just also. */
/*@ */
/*@ Usage: c_just(string, size); */
/*@ returns the address of the modified string. */
/*@ NOTE: There must be size+1 character */
/*@ spaces avail in string. */
/*@ */
/*@*****************************************************/
/***********************************************************************/
/* */
/* Center string str in size length field. */
/* */
/***********************************************************************/
char *c_just(str, size)
char *str;
int size;
{
char *s, *d;
int len, count;
len = strlen(trim(str)); /* get string length */
if (len > size) /* truncate, if necessary */
str[size] = 0x00;
else if (len < size) {
d = str + len + (size - len) / 2; /* copy to leave room */
s = str + len;
count = len + 1;
while (count--)
*d-- = *s--;
count = (size - len) / 2; /* number of blanks to insert */
s = str;
while (count--)
*s++ = ' '; /* add leading blanks */
count = (size - len) - (size - len) / 2; /* number of blanks to insert */
s = str + strlen(str);
while (count--)
*s++ = ' '; /* add trailing blanks */
*s = 0x00; /* and restore end of string */
}
return str;
}