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23 lines
747 B
C

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#include "fmt.h"
size_t fmt_strn(char *out,const char *in,size_t limit) {
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register char* s=out;
register const char* t=in;
register const char* u=in+limit;
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for (;;) {
if (!*t || t==u) break;
if (s) { *s=*t; ++s; }
++t;
if (!*t || t==u) break;
if (s) { *s=*t; ++s; }
++t;
if (!*t || t==u) break;
if (s) { *s=*t; ++s; }
++t;
if (!*t || t==u) break;
if (s) { *s=*t; ++s; }
++t;
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}
return (size_t)(t-in);
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}