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21 lines
614 B
C

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