lvlog.h

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//=====================================================================
//[HEADER] LVLOG
// Multi-component, platform independent message logging.
//+
//[AUTHOR]
// Christian Stapfer
//.
#ifndef LVLOG_H
#define LVLOG_H

#include <stdarg.h>
#include <stdio.h>
#include <lvdef.h>
#ifndef _NOT_EDITOR
#include "lvlog.sh"
#endif


#ifdef _MSC_VER
#  ifdef __WIN3264__
#    include <windows.h>
#    ifdef _LVLOG_
#        define LVLOGENTRY  __declspec(dllexport)
#    else
#        define LVLOGENTRY  __declspec(dllimport)
#    endif
#  else
#    include <windows.h>
#    define LVLOGENTRY __export FAR CDECL
#  endif
#else
#ifdef _Windows
#  include <windows.h>
#  define LVLOGENTRY __export FAR CDECL
#else
#    define LVLOGENTRY
#    define FAR
#    define CDECL
#endif
#endif

#include <lvpackon.h>

#ifdef __cplusplus
    extern "C" {
#endif

// -- Component-specific plaintext translation table structure:
typedef struct {
    char FAR      *szPref;  /* Module specific prefix         */
    char FAR      *szName;  /* Plaintext name                 */
    unsigned       min;     /* First status value defined     */
    unsigned       nFormat; /* Index of first char of format
                             * of this module.
                             */
    } LVLOG_MODULE;

typedef struct LVLOG_TABLE {
    unsigned char      major,minor;/* Version ID of LVSTATUS.PL/LVLOG  */
    unsigned char      id[2];      /* ID of generated table          */
    char FAR          *szPref;     /* Component specific prefix      */
    char FAR          *szName;     /* Plaintext name                 */
    char FAR          *szFile;     /* File holding externalized fmts */
    unsigned           min,max;    /* Range [min:max] actually used  */
    LVLOG_MODULE FAR  *pModule;    /* Pointer to module array        */
    int                nModules;   /* Total number of modules        */
    unsigned char FAR *szFormat;   /* Pointer to format array        */
    } LVLOG_TABLE;
// typedef struct LVLOG_TABLE LVLOG_TABLE;

typedef enum {
    LVINFO = 0,
    LVWARNING,
    LVERROR,
    LVFATAL
    } LVSEVERITY;

// -- Information functions:
LVLOGAPI LVSEVERITY LVLOGENTRY LvSeverity(LVSTATUS);
LVLOGAPI long LVLOGENTRY LvLogCount(LVSEVERITY);

// -- Message logging functions:
LVLOGAPI LVSTATUS LVLOGENTRY LvLog(LVSTATUS, const char FAR *, unsigned, ...);
LVLOGAPI LVSTATUS LVLOGENTRY LvLogAssert(int, LVSTATUS, const char FAR *,
                              unsigned, ...);
LVLOGAPI LVSTATUS LVLOGENTRY LvLogPlain(LVSTATUS, const char FAR *, unsigned);
LVLOGAPI LVSTATUS LVLOGENTRY LvLogAssertPlain(int, LVSTATUS, const char FAR *,
                                   unsigned);

// -- Severity level of logged messages: (default is INFO)
LVLOGAPI LVSEVERITY LVLOGENTRY LvLogSetLevel(LVSEVERITY);

// -- Search path to files holding externalized message formats
//     can be defined by: (default is current dir, only)
LVLOGAPI void LVLOGENTRY LvLogSetPath(char FAR *);

// -- Attaching of callbacks to the log stream:
#ifdef _MSC_VER
typedef void (FAR CDECL *LVLOG_CALLBACK)
#else
typedef void FAR CDECL (*LVLOG_CALLBACK)
#endif
    (void FAR *, // Context
     const char FAR*, const char FAR*, // Component
     const char FAR*, const char FAR*, // Module
     LVSEVERITY,                       // Severity level
     const char FAR*,                  // Format
     const char FAR*, unsigned,        // File/Line
     va_list                           // ..
     );

#ifdef _MSC_VER
LVLOGAPI LVLOGENTRY void FAR* LvLogAttach(LVLOG_CALLBACK, void FAR *, int);
#else
LVLOGAPI void FAR* LVLOGENTRY LvLogAttach(LVLOG_CALLBACK, void FAR *, int);
#endif
LVLOGAPI void LVLOGENTRY LvLogDetach(void FAR *);
LVLOGAPI void LVLOGENTRY LvLogDetachAll(void);

// -- Registering of component-specific translation tables:
LVLOGAPI void LVLOGENTRY LvLogRegister(const LVLOG_TABLE FAR *);
LVLOGAPI void LVLOGENTRY LvLogUnRegister(const LVLOG_TABLE FAR *);

// -- Example callback implementations:
LVLOGAPI void LVLOGENTRY LvLogStderr(void FAR*, const char FAR *, const char FAR *,
                            const char FAR*,  const char FAR*, LVSEVERITY,
                            const char FAR*, const char FAR*, unsigned ,
                            va_list);
LVLOGAPI void LVLOGENTRY LvLogWinDlg(void FAR* , const char FAR*, const char FAR*,
                            const char FAR*, const char FAR*, LVSEVERITY,
                            const char FAR*, const char FAR*, unsigned ,
                            va_list);

typedef struct {
              unsigned long valid;
              } LVLOG_FILE;
#ifdef _MSC_VER
typedef void (FAR CDECL *LVLOG_FILE_CALLBACK)
#else
typedef void FAR CDECL (*LVLOG_FILE_CALLBACK)
#endif
    (FILE FAR*, // Open file handle to write on..
     void FAR*,    // Context
     const char FAR*, const char FAR*, // Component
     const char FAR*, const char FAR*, // Module
     LVSEVERITY,                       // Severity level
     const char FAR*,                  // Format
     const char FAR*, unsigned,        // File/Line
     va_list                           // ..
     );
LVLOGAPI LVSTATUS LVLOGENTRY LvLogFileStart(const char FAR*, int, int,
                                 LVLOG_FILE_CALLBACK, void FAR*, int,
                                 const LVLOG_FILE FAR* FAR*, unsigned BufferSize);
LVLOGAPI LVSTATUS LVLOGENTRY LvLogFilePrintf(const LVLOG_FILE FAR*,
                                  const char FAR*, ...);
LVLOGAPI LVSTATUS LVLOGENTRY LvLogFileVprintf(const LVLOG_FILE FAR*,
                                   const char FAR*, va_list);
LVLOGAPI LVSTATUS LVLOGENTRY LvLogFileStop(const LVLOG_FILE FAR*);

#ifdef __cplusplus
    } /* end extern "C" */
#endif

#include <lvpackof.h>

#endif /* ndef LVLOG_H */

//-[HEADER] LVLOG