error.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
 
/*
 * standalone mini error interface
 */
 
#include <stdarg.h>
#include <errno.h>
 
    typedef struct Error_info_s {
        int errors;
        int indent;
        int line;
        int warnings;
        int trace;
        char *file;
        char *id;
    } Error_info_t;
 
#define ERROR_INFO      0       /* info message -- no err_id    */
#define ERROR_WARNING   1       /* warning message              */
#define ERROR_ERROR     2       /* error message -- no err_exit */
#define ERROR_FATAL     3       /* error message with err_exit  */
#define ERROR_PANIC     ERROR_LEVEL     /* panic message with err_exit  */
 
#define ERROR_LEVEL     0x00ff  /* level portion of status      */
#define ERROR_SYSTEM    0x0100  /* report system errno message  */
#define ERROR_USAGE     0x0800  /* usage message                */
 
/* support for extra API misuse warnings if available */
#ifdef __GNUC__
  #define PRINTF_LIKE(index, first) __attribute__((format(printf, index, first)))
#else
  #define PRINTF_LIKE(index, first) /* nothing */
#endif
 
    extern Error_info_t error_info;
 
    extern void setTraceLevel (int);
    extern void setErrorLine (int);
    extern void setErrorFileLine (char*, int);
    extern void setErrorId (char*);
    extern void setErrorErrors (int);
    extern int  getErrorErrors (void);
 
    extern void error(int, const char *, ...) PRINTF_LIKE(2, 3);
    extern void errorf(void *, void *, int, const char *, ...) PRINTF_LIKE(4, 5);
    extern void errorv(const char *, int, const char *, va_list);
 
#undef PRINTF_LIKE
 
#ifdef __cplusplus
}
#endif