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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
* The contents of this file are subject to the Netscape Public License
* Version 1.1 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#ifndef nsTextFormatter_h___
#define nsTextFormatter_h___
/*
** API for PR printf like routines. Supports the following formats
** %d - decimal
** %u - unsigned decimal
** %x - unsigned hex
** %X - unsigned uppercase hex
** %o - unsigned octal
** %hd, %hu, %hx, %hX, %ho - 16-bit versions of above
** %ld, %lu, %lx, %lX, %lo - 32-bit versions of above
** %lld, %llu, %llx, %llX, %llo - 64 bit versions of above
** %s - utf8 string
** %S - PRUnichar string
** %c - character
** %p - pointer (deals with machine dependent pointer size)
** %f - float
** %g - float
*/
#include "prtypes.h"
#include "prio.h"
#include <stdio.h>
#include <stdarg.h>
#include "nscore.h"
#include "nsAString.h"
class NS_COM nsTextFormatter {
public:
/*
** sprintf into a fixed size buffer. Guarantees that a NUL is at the end
** of the buffer. Returns the length of the written output, NOT including
** the NUL, or (PRUint32)-1 if an error occurs.
*/
static PRUint32 snprintf(PRUnichar *out, PRUint32 outlen, const PRUnichar *fmt, ...);
/*
** sprintf into a PR_MALLOC'd buffer. Return a pointer to the malloc'd
** buffer on success, NULL on failure. Call "smprintf_free" to release
** the memory returned.
*/
static PRUnichar* smprintf(const PRUnichar *fmt, ...);
static PRUint32 ssprintf(nsAString& out, const PRUnichar* fmt, ...);
/*
** Free the memory allocated, for the caller, by smprintf
*/
static void smprintf_free(PRUnichar *mem);
/*
** "append" sprintf into a PR_MALLOC'd buffer. "last" is the last value of
** the PR_MALLOC'd buffer. sprintf will append data to the end of last,
** growing it as necessary using realloc. If last is NULL, PR_sprintf_append
** will allocate the initial string. The return value is the new value of
** last for subsequent calls, or NULL if there is a malloc failure.
*/
static PRUnichar* sprintf_append(PRUnichar *last, const PRUnichar *fmt, ...);
/*
** va_list forms of the above.
*/
static PRUint32 vsnprintf(PRUnichar *out, PRUint32 outlen, const PRUnichar *fmt, va_list ap);
static PRUnichar* vsmprintf(const PRUnichar *fmt, va_list ap);
static PRUint32 vssprintf(nsAString& out, const PRUnichar *fmt, va_list ap);
static PRUnichar* vsprintf_append(PRUnichar *last, const PRUnichar *fmt, va_list ap);
#ifdef DEBUG
static PRBool SelfTest();
#endif
};
#endif /* nsTextFormatter_h___ */
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