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