mirror of
https://github.com/0intro/wmii
synced 2024-11-25 07:09:38 +03:00
89 lines
1.9 KiB
C
89 lines
1.9 KiB
C
/*
|
|
* 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.
|
|
*/
|
|
/*
|
|
* Plan 9 port version must include libc.h in order to
|
|
* get Plan 9 debugging malloc, which sometimes returns
|
|
* different pointers than the standard malloc.
|
|
*/
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include "plan9.h"
|
|
#include "fmt.h"
|
|
#include "fmtdef.h"
|
|
|
|
static int
|
|
fmtStrFlush(Fmt *f)
|
|
{
|
|
char *s;
|
|
int n;
|
|
|
|
if(f->start == nil)
|
|
return 0;
|
|
n = (uintptr_t)f->farg;
|
|
n *= 2;
|
|
s = (char*)f->start;
|
|
f->start = realloc(s, n);
|
|
if(f->start == nil){
|
|
f->farg = nil;
|
|
f->to = nil;
|
|
f->stop = nil;
|
|
free(s);
|
|
return 0;
|
|
}
|
|
f->farg = (void*)(uintptr_t)n;
|
|
f->to = (char*)f->start + ((char*)f->to - s);
|
|
f->stop = (char*)f->start + n - 1;
|
|
return 1;
|
|
}
|
|
|
|
int
|
|
fmtstrinit(Fmt *f)
|
|
{
|
|
int n;
|
|
|
|
memset(f, 0, sizeof *f);
|
|
f->runes = 0;
|
|
n = 32;
|
|
f->start = malloc(n);
|
|
if(f->start == nil)
|
|
return -1;
|
|
f->to = f->start;
|
|
f->stop = (char*)f->start + n - 1;
|
|
f->flush = fmtStrFlush;
|
|
f->farg = (void*)(uintptr_t)n;
|
|
f->nfmt = 0;
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* print into an allocated string buffer
|
|
*/
|
|
char*
|
|
vsmprint(const char *fmt, va_list args)
|
|
{
|
|
Fmt f;
|
|
int n;
|
|
|
|
if(fmtstrinit(&f) < 0)
|
|
return nil;
|
|
va_copy(f.args,args);
|
|
n = dofmt(&f, fmt);
|
|
va_end(f.args);
|
|
if(n < 0){
|
|
free(f.start);
|
|
return nil;
|
|
}
|
|
return fmtstrflush(&f);
|
|
}
|