runevsnprint.c (526B)
1 /* Copyright (c) 2002-2006 Lucent Technologies; see LICENSE */ 2 #include "fmt.h" 3 #include "fmtdef.h" 4 #include "plan9.h" 5 6 #include <stdarg.h> 7 #include <string.h> 8 9 int runevsnprint(Rune* buf, int len, char* fmt, va_list args) { 10 Fmt f; 11 12 if (len <= 0) 13 return -1; 14 f.runes = 1; 15 f.start = buf; 16 f.to = buf; 17 f.stop = buf + len - 1; 18 f.flush = nil; 19 f.farg = nil; 20 f.nfmt = 0; 21 VA_COPY(f.args, args); 22 fmtlocaleinit(&f, nil, nil, nil); 23 dofmt(&f, fmt); 24 VA_END(f.args); 25 *(Rune*) f.to = '\0'; 26 return (Rune*) f.to - buf; 27 }