1 e17e1a71 2006-05-22 devnull /* Copyright (c) 2004 Google Inc.; see LICENSE */
 2 e17e1a71 2006-05-22 devnull 
 3 85231fd8 2006-05-21 devnull #include <stdarg.h>
 4 85231fd8 2006-05-21 devnull #include <string.h>
 5 85231fd8 2006-05-21 devnull #include "plan9.h"
 6 85231fd8 2006-05-21 devnull #include "fmt.h"
 7 85231fd8 2006-05-21 devnull #include "fmtdef.h"
 8 85231fd8 2006-05-21 devnull 
 9 85231fd8 2006-05-21 devnull /*
10 85231fd8 2006-05-21 devnull  * Fill in the internationalization stuff in the State structure.
11 85231fd8 2006-05-21 devnull  * For nil arguments, provide the sensible defaults:
12 85231fd8 2006-05-21 devnull  *	decimal is a period
13 85231fd8 2006-05-21 devnull  *	thousands separator is a comma
14 85231fd8 2006-05-21 devnull  *	thousands are marked every three digits
15 85231fd8 2006-05-21 devnull  */
16 85231fd8 2006-05-21 devnull void
17 85231fd8 2006-05-21 devnull fmtlocaleinit(Fmt *f, char *decimal, char *thousands, char *grouping)
18 85231fd8 2006-05-21 devnull {
19 85231fd8 2006-05-21 devnull 	if(decimal == nil || decimal[0] == '\0')
20 85231fd8 2006-05-21 devnull 		decimal = ".";
21 85231fd8 2006-05-21 devnull 	if(thousands == nil)
22 85231fd8 2006-05-21 devnull 		thousands = ",";
23 85231fd8 2006-05-21 devnull 	if(grouping == nil)
24 85231fd8 2006-05-21 devnull 		grouping = "\3";
25 85231fd8 2006-05-21 devnull 	f->decimal = decimal;
26 85231fd8 2006-05-21 devnull 	f->thousands = thousands;
27 85231fd8 2006-05-21 devnull 	f->grouping = grouping;
28 85231fd8 2006-05-21 devnull }
29 85231fd8 2006-05-21 devnull 
30 85231fd8 2006-05-21 devnull /*
31 85231fd8 2006-05-21 devnull  * We are about to emit a digit in e.g. %'d.  If that digit would
32 85231fd8 2006-05-21 devnull  * overflow a thousands (e.g.) grouping, tell the caller to emit
33 85231fd8 2006-05-21 devnull  * the thousands separator.  Always advance the digit counter
34 85231fd8 2006-05-21 devnull  * and pointer into the grouping descriptor.
35 85231fd8 2006-05-21 devnull  */
36 85231fd8 2006-05-21 devnull int
37 e17e1a71 2006-05-22 devnull __needsep(int *ndig, char **grouping)
38 85231fd8 2006-05-21 devnull {
39 85231fd8 2006-05-21 devnull 	int group;
40 85231fd8 2006-05-21 devnull 	
41 85231fd8 2006-05-21 devnull 	(*ndig)++;
42 85231fd8 2006-05-21 devnull 	group = *(unsigned char*)*grouping;
43 85231fd8 2006-05-21 devnull 	/* CHAR_MAX means no further grouping. \0 means we got the empty string */
44 85231fd8 2006-05-21 devnull 	if(group == 0xFF || group == 0x7f || group == 0x00)
45 85231fd8 2006-05-21 devnull 		return 0;
46 85231fd8 2006-05-21 devnull 	if(*ndig > group){
47 85231fd8 2006-05-21 devnull 		/* if we're at end of string, continue with this grouping; else advance */
48 85231fd8 2006-05-21 devnull 		if((*grouping)[1] != '\0')
49 85231fd8 2006-05-21 devnull 			(*grouping)++;
50 85231fd8 2006-05-21 devnull 		*ndig = 1;
51 85231fd8 2006-05-21 devnull 		return 1;
52 85231fd8 2006-05-21 devnull 	}
53 85231fd8 2006-05-21 devnull 	return 0;
54 85231fd8 2006-05-21 devnull }
55 85231fd8 2006-05-21 devnull