prprf.h
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- /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
- /* ***** BEGIN LICENSE BLOCK *****
- * Version: MPL 1.1/GPL 2.0/LGPL 2.1
- *
- * The contents of this file are subject to the Mozilla Public License Version
- * 1.1 (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- * http://www.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
- * for the specific language governing rights and limitations under the
- * License.
- *
- * The Original Code is the Netscape Portable Runtime (NSPR).
- *
- * The Initial Developer of the Original Code is
- * Netscape Communications Corporation.
- * Portions created by the Initial Developer are Copyright (C) 1998-2000
- * the Initial Developer. All Rights Reserved.
- *
- * Contributor(s):
- *
- * Alternatively, the contents of this file may be used under the terms of
- * either the GNU General Public License Version 2 or later (the "GPL"), or
- * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
- * in which case the provisions of the GPL or the LGPL are applicable instead
- * of those above. If you wish to allow use of your version of this file only
- * under the terms of either the GPL or the LGPL, and not to allow others to
- * use your version of this file under the terms of the MPL, indicate your
- * decision by deleting the provisions above and replace them with the notice
- * and other provisions required by the GPL or the LGPL. If you do not delete
- * the provisions above, a recipient may use your version of this file under
- * the terms of any one of the MPL, the GPL or the LGPL.
- *
- * ***** END LICENSE BLOCK ***** */
- #ifndef prprf_h___
- #define prprf_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 - 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>
- PR_BEGIN_EXTERN_C
- /*
- ** 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.
- */
- NSPR_API(PRUint32) PR_snprintf(char *out, PRUint32 outlen, const char *fmt, ...);
- /*
- ** sprintf into a PR_MALLOC'd buffer. Return a pointer to the malloc'd
- ** buffer on success, NULL on failure. Call "PR_smprintf_free" to release
- ** the memory returned.
- */
- NSPR_API(char*) PR_smprintf(const char *fmt, ...);
- /*
- ** Free the memory allocated, for the caller, by PR_smprintf
- */
- NSPR_API(void) PR_smprintf_free(char *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.
- */
- NSPR_API(char*) PR_sprintf_append(char *last, const char *fmt, ...);
- /*
- ** sprintf into a function. The function "f" is called with a string to
- ** place into the output. "arg" is an opaque pointer used by the stuff
- ** function to hold any state needed to do the storage of the output
- ** data. The return value is a count of the number of characters fed to
- ** the stuff function, or (PRUint32)-1 if an error occurs.
- */
- typedef PRIntn (*PRStuffFunc)(void *arg, const char *s, PRUint32 slen);
- NSPR_API(PRUint32) PR_sxprintf(PRStuffFunc f, void *arg, const char *fmt, ...);
- /*
- ** fprintf to a PRFileDesc
- */
- NSPR_API(PRUint32) PR_fprintf(struct PRFileDesc* fd, const char *fmt, ...);
- /*
- ** va_list forms of the above.
- */
- NSPR_API(PRUint32) PR_vsnprintf(char *out, PRUint32 outlen, const char *fmt, va_list ap);
- NSPR_API(char*) PR_vsmprintf(const char *fmt, va_list ap);
- NSPR_API(char*) PR_vsprintf_append(char *last, const char *fmt, va_list ap);
- NSPR_API(PRUint32) PR_vsxprintf(PRStuffFunc f, void *arg, const char *fmt, va_list ap);
- NSPR_API(PRUint32) PR_vfprintf(struct PRFileDesc* fd, const char *fmt, va_list ap);
- /*
- ***************************************************************************
- ** FUNCTION: PR_sscanf
- ** DESCRIPTION:
- ** PR_sscanf() scans the input character string, performs data
- ** conversions, and stores the converted values in the data objects
- ** pointed to by its arguments according to the format control
- ** string.
- **
- ** PR_sscanf() behaves the same way as the sscanf() function in the
- ** Standard C Library (stdio.h), with the following exceptions:
- ** - PR_sscanf() handles the NSPR integer and floating point types,
- ** such as PRInt16, PRInt32, PRInt64, and PRFloat64, whereas
- ** sscanf() handles the standard C types like short, int, long,
- ** and double.
- ** - PR_sscanf() has no multibyte character support, while sscanf()
- ** does.
- ** INPUTS:
- ** const char *buf
- ** a character string holding the input to scan
- ** const char *fmt
- ** the format control string for the conversions
- ** ...
- ** variable number of arguments, each of them is a pointer to
- ** a data object in which the converted value will be stored
- ** OUTPUTS: none
- ** RETURNS: PRInt32
- ** The number of values converted and stored.
- ** RESTRICTIONS:
- ** Multibyte characters in 'buf' or 'fmt' are not allowed.
- ***************************************************************************
- */
- NSPR_API(PRInt32) PR_sscanf(const char *buf, const char *fmt, ...);
- PR_END_EXTERN_C
- #endif /* prprf_h___ */