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#include "fmt.h"
/* "foo" -> "foo "
* append padlen-srclen spaces after dest, if that is >= 0. Truncate
* only if total length is larger than maxlen. Return number of
* characters written. */
unsigned long fmt_fill(char* dest,unsigned long srclen,unsigned long padlen,unsigned long maxlen) {
long todo;
char* olddest=dest;
char* max=dest+maxlen;
if (dest==0) {
int sum=srclen>padlen?srclen:padlen;
return sum>maxlen?maxlen:sum;
}
dest+=srclen;
for (todo=padlen-srclen; todo>0; --todo) {
if (dest>max) break;
*dest=' '; ++dest;
}
return dest-olddest;
}