sfio.h

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/*************************************************************************
 * Copyright (c) 2011 AT&T Intellectual Property 
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors: Details at https://graphviz.org
 *************************************************************************/
 
#pragma once
 
#ifdef __cplusplus
extern "C" {
#endif
 
/*      Public header file for the sfio library
**
**      Written by Kiem-Phong Vo
*/
 
#include "config.h"
 
#include <limits.h>
#include <stdio.h>
#include <sys/types.h>
 
/* formatting environment */
    typedef struct _sffmt_s Sffmt_t;
    typedef int (*Sffmtext_f)(void *, Sffmt_t *);
    struct _sffmt_s {
        Sffmtext_f extf;        /* function to process arguments        */
 
        char *form;             /* format string to stack               */
 
        int fmt;                /* format character                     */
        ssize_t size;           /* object size                          */
        int flags;              /* formatting flags                     */
        int width;              /* width of field                       */
        int precis;             /* precision required                   */
        int base;               /* conversion base                      */
 
        const char *t_str;              /* type string                          */
        ssize_t n_str;          /* length of t_str                      */
    };
 
#define SFFMT_SSHORT    00000010        /* 'hh' flag, char                     */
#define SFFMT_TFLAG     00000020        /* 't' flag, ptrdiff_t                 */
#define SFFMT_ZFLAG     00000040        /* 'z' flag, size_t                    */
 
#define SFFMT_LEFT      00000100        /* left-justification                  */
#define SFFMT_SIGN      00000200        /* must have a sign                    */
#define SFFMT_BLANK     00000400        /* if not signed, prepend a blank      */
#define SFFMT_ZERO      00001000        /* zero-padding on the left            */
#define SFFMT_ALTER     00002000        /* alternate formatting                */
#define SFFMT_THOUSAND  00004000        /* thousand grouping                   */
#define SFFMT_SKIP      00010000        /* skip assignment in scanf()          */
#define SFFMT_SHORT     00020000        /* 'h' flag                            */
#define SFFMT_LONG      00040000        /* 'l' flag                            */
#define SFFMT_LLONG     00100000        /* 'll' flag                           */
#define SFFMT_LDOUBLE   00200000        /* 'L' flag                            */
#define SFFMT_VALUE     00400000        /* value is returned                   */
#define SFFMT_ARGPOS    01000000        /* getting arg for $ patterns          */
#define SFFMT_IFLAG     02000000        /* 'I' flag                            */
#define SFFMT_JFLAG     04000000        /* 'j' flag, intmax_t                  */
#define SFFMT_SET       07777770        /* flags settable on calling extf      */
 
     extern ssize_t _Sfi;
 
    extern int sfprint(FILE*, Sffmt_t *format);
    extern int sfvscanf(FILE *, Sffmt_t *format);
 
/* miscellaneous function analogues of fast in-line functions */
    extern ssize_t sfslen(void);
 
#ifdef __cplusplus
}
#endif