diff options
Diffstat (limited to 'src/lib9/utf/utfecpy.c')
-rw-r--r-- | src/lib9/utf/utfecpy.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/src/lib9/utf/utfecpy.c b/src/lib9/utf/utfecpy.c new file mode 100644 index 000000000..cf3535fb4 --- /dev/null +++ b/src/lib9/utf/utfecpy.c @@ -0,0 +1,37 @@ +/* + * The authors of this software are Rob Pike and Ken Thompson. + * Copyright (c) 2002 by Lucent Technologies. + * Permission to use, copy, modify, and distribute this software for any + * purpose without fee is hereby granted, provided that this entire notice + * is included in all copies of any software which is or includes a copy + * or modification of this software and in all copies of the supporting + * documentation for such software. + * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED + * WARRANTY. IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE + * ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY + * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE. + */ +#define _BSD_SOURCE 1 /* memccpy */ +#include <stdarg.h> +#include <string.h> +#include "plan9.h" +#include "utf.h" + +char* +utfecpy(char *to, char *e, char *from) +{ + char *end; + + if(to >= e) + return to; + end = memccpy(to, from, '\0', e - to); + if(end == nil){ + end = e-1; + while(end>to && (*--end&0xC0)==0x80) + ; + *end = '\0'; + }else{ + end--; + } + return end; +} |