/*
* The authors of this software are Rob Pike and Ken Thompson,
* with contributions from Mike Burrows and Sean Dorward.
*
* Copyright (c) 2002-2006 by Lucent Technologies.
* Portions Copyright (c) 2004 Google Inc.
*
* 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
* NOR GOOGLE INC MAKE ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING
* THE MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
*/
#include <u.h>
#include <libc.h>
#include "fmtdef.h"
/*
* Fill in the internationalization stuff in the State structure.
* For nil arguments, provide the sensible defaults:
* decimal is a period
* thousands separator is a comma
* thousands are marked every three digits
*/
void
fmtlocaleinit(Fmt *f, char *decimal, char *thousands, char *grouping)
{
if(decimal == nil || decimal[0] == '\0')
decimal = ".";
if(thousands == nil)
thousands = ",";
if(grouping == nil)
grouping = "\3";
f->decimal = decimal;
f->thousands = thousands;
f->grouping = grouping;
}
/*
* We are about to emit a digit in e.g. %'d. If that digit would
* overflow a thousands (e.g.) grouping, tell the caller to emit
* the thousands separator. Always advance the digit counter
* and pointer into the grouping descriptor.
*/
int
__needsep(int *ndig, char **grouping)
{
int group;
(*ndig)++;
group = *(unsigned char*)*grouping;
/* CHAR_MAX means no further grouping. \0 means we got the empty string */
if(group == 0xFF || group == 0x7f || group == 0x00)
return 0;
if(*ndig > group){
/* if we're at end of string, continue with this grouping; else advance */
if((*grouping)[1] != '\0')
(*grouping)++;
*ndig = 1;
return 1;
}
return 0;
}