| /* Copyright (c) 2004 Google Inc.; see LICENSE */ |
| |
| #include <stdarg.h> |
| #include <string.h> |
| #include "plan9.h" |
| #include "fmt.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; |
| } |
| |